PATHNET TELECOMMUNICATIONS INC
10-Q, 2000-05-15
TELEPHONE COMMUNICATIONS (NO RADIOTELEPHONE)
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 10-Q

(mark one)

[X]      QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
            SECURITIES EXCHANGE ACT OF 1934

                  For the quarterly period ended March 31, 2000

                                       OR

[  ]     TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
            SECURITIES EXCHANGE ACT OF 1934

For the transition period from                    to
                               --------------          ----------------

                          Commission File No. 333-91469

                        Pathnet Telecommunications, Inc.
             (Exact name of registrant as specified in its charter)

         Delaware                                              52-2201331
(State or other jurisdiction of                            (I.R.S. Employer
incorporation or organization)                           Identification No.)

     11720 Sunrise Valley Drive
       Reston, VA                                                  20191
(Address of principal executive offices)                        (Zip Code)

                                 (703) 390-1000
              (Registrant's telephone number, including area code)

                                 Not Applicable
(Former name,former address and former fiscal year,if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months (or for such  shorter  period that the  registrant  was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days.

                                      Yes [ ] No [ X ]

As of May 12,  2000,  there were  3,178,477  shares of the  Registrant's  common
stock, par value $.01 per share, outstanding.

<PAGE>



                                        2
                PATHNET TELECOMMUNICATIONS, INC. AND SUBSIDIARIES
                          QUARTERLY REPORT ON FORM 10-Q
                  FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2000
                                      INDEX

<TABLE>
<CAPTION>


                                                                                                            PAGE
<S>                                                                                                          <C>
PART I.   FINANCIAL INFORMATION

Item 1.   Unaudited Condensed Consolidated Financial Statements

            Consolidated Balance Sheets as of March 31, 2000 (unaudited) and
               December 31, 1999                                                                               3

           Unaudited Consolidated Statements of Operations for the three months ended
               March 31, 2000 and 1999                                                                         4

            Unaudited Consolidated Statements of Comprehensive Loss for the three
               months ended March 31, 2000 and 1999                                                            5

            Unaudited Consolidated Statements of Cash Flows for the three months
               ended March 31, 2000 and 1999                                                                   6

            Notes to Unaudited Consolidated Financial Statements                                               7

Item 2.   Management's Discussion and Analysis of Financial Condition and Results of
                   Operations                                                                                 14

Item 3.   Quantitative and Qualitative Disclosures About Market Risk                                          17

PART II.   OTHER INFORMATION

Item 1.    Legal Proceedings                                                                                  19
Item 2.    Changes in Securities and Use of Proceeds                                                          19
Item 3.    Defaults Upon Senior Securities                                                                    27
Item 4.    Submission of Matters to a Vote of Security Holders                                                27
Item 5.    Other Information                                                                                  27
Item 6.    Exhibits and Reports on Form 8-K                                                                   28
Signatures                                                                                                    29
Exhibits Index                                                                                                30
</TABLE>

<PAGE>
PART I.     FINANCIAL INFORMATION
Item 1.    Financial Statements

    PATHNET TELECOMMUNICATIONS, INC. AND SUBSIDIARIES AND PREDECESSOR COMPANY
                           CONSOLIDATED BALANCE SHEETS
<TABLE>
<CAPTION>

                                                                                       March 31,      December 31,
                                                                                         2000            1999
                                                                                         -----           ----
                                                                                      (UNAUDITED)
<S>                                                                                  <C>             <C>
                                     ASSETS
Cash and cash equivalents                                                            $ 118,599,060   $  90,661,837
Accounts receivable                                                                      1,610,835         254,894
Interest receivable                                                                        408,353       1,048,417
Marketable securities available for sale                                                11,675,066      42,651,836
Prepaid expenses and other current assets                                                1,000,342       1,182,570
                                                                                     -------------   -------------
     Total current assets                                                              133,293,656     135,799,554
Property and equipment, net                                                            158,365,020     131,928,365
Intangible assets - rights of way                                                      187,275,006               -
Deferred financing costs, net                                                           15,956,145       9,649,680
Restricted cash                                                                         25,275,159      16,921,559
Marketable securities available for sale                                                22,092,539       5,088,458
Pledged marketable securities held to maturity                                                   -      20,796,563
Other assets                                                                               416,394         351,808
                                                                                     -------------   -------------
    Total assets                                                                     $ 542,673,919   $ 320,535,987
                                                                                     =============   =============
                LIABILITIES, MANDATORILY REDEEMABLE PREFERRED STOCK
                         AND STOCKHOLDERS' EQUITY (DEFICIT)
Accounts payable                                                                      $ 17,756,350    $ 18,543,195
Accrued interest                                                                        19,651,044       8,932,293
Accrued expenses and other current liabilities                                           3,125,698       3,113,181
                                                                                     -------------   -------------
   Total current liabilities                                                            40,533,092      30,588,669
12 1/4% Senior Notes, net of unamortized bond discount of $3,276,000 and $3,378,375
   respectively                                                                        346,724,000     346,621,625
Other noncurrent liabilities                                                             7,991,061       3,092,779
                                                                                     -------------   -------------
   Total liabilities                                                                   395,248,153     380,303,073
                                                                                     -------------   -------------
Commitments and contingences
Mandatorily redeemable preferred stock:
   Series A convertible preferred stock, $0.01 par value, 0 and 1,000,000 shares
     authorized, issued and outstanding at March 31, 2000 and December 31, 1999,
     respectively (liquidation preference $1,000,000)                                            -       1,000,000
   Series B convertible preferred stock, $0.01 par value, 0 and 1,651,046 shares
     authorized, issued and outstanding at March 31, 2000 and December 31, 1999,
     respectively (liquidation preference $5,033,367)                                            -       5,008,367
   Series C convertible preferred stock, $0.01 par value, 0 and 2,819,549 shares
     authorized, issued and outstanding at March 31, 2000 and December 31, 1999,
     respectively (liquidation preference $30,000,052)                                           -      29,961,272
   Series E convertible preferred stock, $0.01 par value, 4,506,145 and 0 shares
     authorized, 2,867,546 and 0 issued and outstanding and March 31, 2000
     and December 31, 1999, respectively                                                37,871,966               -
                                                                                     -------------   -------------
   Total mandatorily redeemable preferred stock                                         37,871,966      35,969,639
                                                                                     -------------   -------------
Stockholders' equity (deficit):
Series A convertible  preferred stock,  $0.01 par value,  2,899,999 and 0 shares
  authorized,  issued and  outstanding  at March 31, 2000 and December 31, 1999,
  respectively                                                                              29,000               -
Series B convertible  preferred stock,  $0.01 par value,  4,788,030 and 0 shares
  authorized,  issued and  outstanding  at March 31, 2000 and December 31, 1999,
  respectively                                                                              47,880               -
Series C convertible  preferred stock,  $0.01 par value,  8,176,686 and 0 shares
  authorized,  issued and  outstanding  at March 31, 2000 and December 31, 1999,
  respectively                                                                              81,767               -
Series D convertible  preferred stock,  $0.01 par value,  9,250,000 and 0 shares
  authorized, 8,511,607 and 0 shares issued and outstanding at March 31,2000 and
  December 31, 1999, respectively                                                           85,116               -
Undesignated preferred stock, par value $0.01 per share, 0 and 10,000,000 shares
  authorized, 0 shares issued and outstanding                                                    -               -
Common stock, $0.01 par value, 60,000,000 shares authorized, 3,176,107 and
  3,068,218 shares issued and outstanding                                                   31,761          30,682
Deferred compensation                                                                   (8,977,266)       (441,760)
Additional paid-in capital                                                             240,001,666       6,264,362
Accumulated other comprehensive loss                                                       (14,869)        (90,240)
Accumulated deficit                                                                   (121,731,255)   (101,499,769)
                                                                                     -------------   -------------
   Total stockholders' equity (deficit)                                                109,553,800     (95,736,725)
                                                                                     -------------   -------------
    Total liabilities, mandatorily redeemable preferred stock and
     stockholders' equity                                                            $ 542,673,919   $ 320,535,987
                                                                                     =============   =============
</TABLE>
    THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED
                             FINANCIAL STATEMENTS.


                                       3
<PAGE>



    PATHNET TELECOMMUNICATIONS, INC. AND SUBSIDIARIES AND PREDECESSOR COMPANY
                      CONSOLIDATED STATEMENTS OF OPERATIONS
                                   (unaudited)
<TABLE>
<CAPTION>

                                                                                FOR THE THREE MONTHS ENDED
                                                                                           MARCH 31,
                                                                                     2000                 1999
                                                                                     ----                 ----
<S>                                                                             <C>                   <C>
Revenue                                                                        $  1,926,554           $   826,104
                                                                                -----------           -----------
Operating expenses:
     Cost of revenue (including non cash deferred compensation
      of $532,657 and $20,582, respectively)                                      4,268,997             2,651,200
     Selling, general and administrative  (including non cash deferred
      compensation of $899,712 and $113,494, respectively)                        6,243,490             2,795,360
     Reorganization expenses                                                      1,408,468                     -
     Depreciation expense                                                         2,557,984               537,639
                                                                                -----------           -----------
        Total operating expenses                                                 14,478,939             5,984,199
                                                                                -----------           -----------
Net operating loss                                                              (12,552,385)           (5,158,095)
Interest expense                                                                 (9,741,793)          (10,270,211)
Interest income                                                                   2,235,057             3,814,608
Other income (expense), net                                                        (172,365)               88,096
                                                                                -----------           -----------
        Net loss                                                               $(20,231,486)         $(11,525,602)
                                                                                ===========           ===========
Basic and diluted loss per
     common share                                                                   $ (6.59)              $ (3.97)
                                                                                ===========           ===========
Weighted average number of
     common shares outstanding                                                    3,068,240             2,902,895
                                                                                ===========           ===========
</TABLE>









   THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL
                                  STATEMENTS.

                                       4
<PAGE>




    PATHNET TELECOMMUNICATIONS, INC. AND SUBSIDIARIES AND PREDECESSOR COMPANY
                  CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS
                                   (unaudited)
<TABLE>
<CAPTION>

                                                                                FOR THE THREE MONTHS ENDED
                                                                                           MARCH 31,
                                                                                     2000                 1999
                                                                                     ----                 ----
<S>                                                                             <C>                   <C>
Net loss                                                                      $ (20,231,486)        $ (11,525,602)

Other comprehensive income:
     Net unrealized (loss) gain on marketable
        securities available for sale                                                75,371              (133,891)
                                                                                -----------           -----------
Comprehensive loss                                                            $ (20,156,115)        $ (11,659,493)
                                                                                ===========           ===========
</TABLE>












   THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL
                                  STATEMENTS.

                                       5

<PAGE>

    PATHNET TELECOMMUNICATIONS, INC. AND SUBSIDIARIES AND PREDECESSOR COMPANY
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                                   (unaudited)
<TABLE>
<CAPTION>
                                                                                           FOR THE THREE MONTHS ENDED
                                                                                                     MARCH 31,
                                                                                           2000                  1999
                                                                                           ----                  ----
<S>                                                                                  <C>                     <C>
Cash flows from operating activities:
    Net loss                                                                         $ (20,231,486)          $(11,525,602)
    Adjustment to reconcile net loss to net cash used in operating activities:
       Depreciation expense                                                              2,557,984                537,639
       Amortization of deferred financing costs                                            285,160                284,005
       Provision for write down of spare parts                                             120,000                      -
       Provision for losses on accounts receivable                                          21,000                      -
       Loss on sale of equipment                                                              (279)                     -
       Interest expense resulting from amortization of discount on the
         bonds payable                                                                     102,375                102,375
       Amortization of premium on pledged securities                                        71,563                167,295
       Amortization of deferred compensation                                             1,432,369                134,076
    Changes in assets and liabilities:
       Accounts receivable                                                              (1,376,941)               404,215
       Interest receivable                                                               1,108,446                339,068
       Prepaid expenses and other current assets                                           182,228             (4,573,224)
       Accounts payable                                                                  2,734,227             (1,234,100)
       Accrued interest                                                                 10,718,752             10,718,751
       Accrued expenses and other liabilities                                            1,876,611                973,861
       Other assets                                                                        (64,586)              (108,565)
                                                                                     -------------           ------------
          Net cash used in operating activities                                           (462,577)            (3,780,206)
                                                                                     -------------           ------------
Cash flows from investing activities:
    Expenditures for network in progress                                               (28,731,555)           (16,668,923)
    Expenditures for property and equipment                                             (1,144,690)              (125,589)
    Sale and maturity of marketable securites available for sale                        50,942,232             58,493,029
    Purchase of marketable securities available for sale                               (35,894,172)                     -
    Sale and maturity of pledged marketable securities held to maturity                (20,725,261)                41,092
    Restricted cash                                                                     (8,822,243)              (155,930)
    Repayment of note receivable                                                                 -              3,206,841
                                                                                     -------------           ------------
          Net cash provided by (used in) investing activities                           (3,925,167)           44,790,520
                                                                                     -------------           ------------
    Issuance of series E convertible preferred stock                                    38,000,000                      -
    Proceeds from option to purchase series E convertible preferred stock                1,000,000                      -
    Exercise of employee common stock options                                              396,718                  1,091
    Payment of deferred financing costs                                                 (7,071,751)                     -
                                                                                     -------------           ------------
          Net cash provided by (used in) financing activities                           32,324,967                  1,091
                                                                                     -------------           ------------
Net increase in cash and cash equivalents                                               27,937,223             41,011,405
Cash and cash equivalents at the beginning of period                                    90,661,837             57,521,887
                                                                                     -------------           ------------
Cash and cash equivalents at the end of period                                       $ 118,599,060           $ 98,533,292
                                                                                     =============           ============
</TABLE>

   THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL
                                  STATEMENTS.




                                       6

<PAGE>




                PATHNET TELECOMMUNICATIONS, INC. AND SUBSIDIARIES
                             AND PREDECESSOR COMPANY
         CONDENSED NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

1.       THE COMPANY

         Pathnet,  Inc. (Pathnet),  is a wholesale  telecommunications  provider
building a nationwide  network  designed to provide  other  wholesale and retail
telecommunications  service  providers with access to underserved and second and
third tier markets throughout the United States.

         Pathnet  Telecommunications,   Inc.  (Pathnet  Telecommunications)  was
formed on November 1, 1999 by certain former shareholders of Pathnet in order to
facilitate the  reorganization  transaction  which became effective on March 30,
2000 (see Note 11) and to continue the activity of Pathnet. Upon finalization of
the  reorganization  transaction,  Pathnet became a  wholly-owned  subsidiary of
Pathnet Telecommunications. Hereafter, Pathnet Telecommunications, together with
Pathnet and its subsidiaries, are referred to as the Company.

         The  Company's  network will enable its  customers  including  existing
local telephone companies, long distance companies,  internet service providers,
competitive   telecommunications   companies,   cellular   operators  and  other
telecommunications  providers to offer  additional  services to new and existing
customers  in these  markets  without  having to expend  their own  resources to
build, expand or upgrade their own networks.

         As of March 31, 2000,  the  Company's  network  consisted of over 6,300
wireless route miles providing wholesale transport services to 44 cities and 700
miles of installed  fiber. The Company is constructing an additional 1,000 route
miles of fiber optic  network,  500 of which is scheduled for  completion by the
end of the second quarter. During 2000, the Company intends to deploy additional
products and services  including  bundled  wholesale  transport and local access
services.

         The Company's  business is funded primarily through equity  investments
by the Company's  stockholders  and by proceeds from  Pathnet's  $350.0  million
aggregate  principal amount of units consisting of 12 1/4% Senior Notes due 2008
(Senior Notes),  which have been registered under the Securities Act of 1933, as
amended  (Securities  Act),  and  warrants to purchase  Common  Stock  issued by
Pathnet on April 8, 1998 (Debt Offering).

2.       BASIS OF PRESENTATION

         Pathnet was formed to build a  nationwide  network  designed to provide
other wholesale and retail  telecommunications  service providers with access to
underserved  and second and third tier  markets  throughout  the United  States.
Pathnet  Telecommunications  was formed to continue the activity of Pathnet with
strategic  investments from Colonial Pipeline Company,  Burlington  Northern and
Santa  Fe  Corporation  and CSX  Corporation  received  in  connection  with the
reorganization    transaction.    Since    inception,    Pathnet   and   Pathnet
Telecommunications' activities consist principally of constructing and deploying
digital networks utilizing both wireless and fiber-optic  technologies.  Pathnet
and Pathnet  Telecommunications  were considered companies under common control.
Consequently,   for  purposes  of  the   accompanying   consolidated   financial
statements,  Pathnet has been treated as a "predecessor" entity.  Therefore, the
consolidated  financial  statements  as of  December  31, 1999 and for the three
months ended March 31, 1999  represent the historical  financial  information of
Pathnet,  the  predecessor  entity.  The  accompanying   consolidated  financial
statements  incorporate the combined business  activities of Pathnet and Pathnet
Telecommunications.  Collectively,  Pathnet and Pathnet  Telecommunications  are
referred  to  as  the  Company  in  the  accompanying   consolidated   financial
statements.

         The Company recently commenced providing telecommunications services to
customers and  recognizing  the revenue from the sale of such  telecommunication
services.  The  Company's  principal  activities  to  date  have  been  securing
contractual   alliances  with  its   co-development   partners,   designing  and
constructing network path segments,  obtaining capital and planning its proposed
service.   As  of  March  31,  2000  the  Company  had  25  customers   for  its
telecommunications  services.  As a result,  the Company exited the  development
stage in the three months ended March 31, 2000.

         In the opinion of management,  the accompanying  unaudited consolidated
financial statements of the Company contain all adjustments  (consisting only of
normal   recurring   accruals)   necessary  to  present   fairly  the  Company's
consolidated  financial  position,  and the results of operations and cash flows
for the periods indicated. Certain information and footnote disclosures normally
included in financial  statements prepared in accordance with generally accepted
accounting   principles   have  been  condensed  or  omitted.   These  unaudited
consolidated  financial  statements  should  be read  in  conjunction  with  the
financial  statements  and notes  thereto  for  Pathnet,  Inc.  included  in the
Company's  Registration  Statement  on Form S-1 filed  with the  Securities  and
Exchange  Commission  and made  effective  on March 14,  2000.  The  results  of
operations  for the  three  months  ended  March  31,  2000 are not  necessarily
indicative of the operating results to be expected for the full year.

3.       CONSOLIDATION

         These consolidated financial statements include the accounts of Pathnet
Telecommunications and its wholly owned subsidiaries,  Pathnet and Pathnet/Idaho
Power  License,  LLC (a  wholly  owned  subsidiary  of  Pathnet).  All  material
intercompany accounts and transactions have been eliminated in consolidation.

4.       LOSS PER SHARE

         Basic loss per share is computed by dividing  net loss by the  weighted
average  number of shares of common  stock  outstanding  during  the  applicable
period.  Diluted loss per share is computed by dividing net loss by the weighted
average common and potentially  dilutive common  equivalent  shares  outstanding
during the  applicable  period.  For each of the  periods  presented,  basic and
diluted loss per share are the same. The exercise of 3,394,473  employee  common
stock options,  the exercise of warrants to purchase  1,116,500 shares of common
stock,  and the  conversion  of  27,243,868  shares  of  Series A, B, C, D and E
convertible  preferred  stock into shares of common  stock as of March 31, 2000,
which could  potentially  dilute  basic loss per share in the  future,  were not
included in the computation of diluted loss per share for the periods  presented
because to do so would have been antidilutive in each case.

5.       SEGMENT REPORTING

         The Company identifies its segments based on management responsibility.
The Company  measures  segment loss as operating loss,  which is defined as loss
before interest income and expense,  and income taxes.  The service revenue from
the telecommunications division includes all revenues generated from the sale of
telecommunications  products,  including  high capacity,  digital  transport and
competitive  local  access  services.  The  construction  division  includes the
operating  activity  and the assets  relating  to the  network  build  out.  The
revenues for the  construction  division  primarily  relate to the management of
construction  projects and the sale of dark fiber through indefeasible rights of
use agreements  ("IRUs").  The corporate  division  includes certain general and
administrative  functions and operating expenses.  All of the Company's revenues
are  attributable to customers in the United States,  and all assets are located
in the United States

     The following  tables reflect the financial  information for the reportable
segments;
<TABLE>
<CAPTION>

                                                             THREE MONTHS ENDED MARCH 31, 2000
                                         TELECOMMUNICATIONS       CONSTRUCTION         CORPORATE       CONSOLIDATED
<S>                                   <C>                      <C>                 <C>               <C>
Revenue                               $               921,849  $        1,004,705   $           --   $     1,926,554
Operating expenses                                  1,743,086           2,525,911       10,209,942        14,478,939
                                      -----------------------  ------------------  ---------------   ---------------
Operating loss                        $              (821,237) $       (1,521,206) $   (10,209,942)  $   (12,552,385)
                                      ======================== =================== ================  ================
                                                                THREE MONTHS ENDED MARCH 31, 1999
                                        TELECOMMUNICATIONS        CONSTRUCTION         CORPORATE       CONSOLIDATED
Revenue                               $               576,504  $          249,600  $            --   $       826,104
Operating expenses                                  2,033,900             915,945        3,034,354         5,984,199
                                      -----------------------  ------------------  ---------------   ---------------
Operating loss                        $            (1,784,300) $         (339,441) $    (3,034,354)  $    (5,158,095)
                                      ======================== =================== ================  ================
</TABLE>

         The majority of revenues for the quarter comprise construction services
(approximately 52.2 per cent) arising mainly from its co-development  agreements
with Tri-State Generation and Transmission  Association,  Inc. (Tri-State).  The
remainder  of the  Company's  revenues for the quarter  (approximately  47.8 per
cent) has been derived from the sale of bandwidth  along the  Company's  digital
network  including  approximately  $528,000 from one  customer.  The Company has
experienced  significant  operating and net losses and negative  operating  cash
flow to date and expects to continue to experience  operating and net losses and
negative  operating cash flow until such time as it is able to generate  revenue
sufficient to cover its operating expenses.

6.       AVAILABLE FOR SALE MARKETABLE SECURITIES

         The Company's  marketable  securities  are  considered  "available  for
sale," and, as such, are stated at market value.  Marketable  securities include
restricted  cash of  approximately  $22.1  million  at March 31,  2000.  The net
unrealized  gains and losses on  marketable  securities  are reported as part of
accumulated other comprehensive income (loss). Realized gains or losses from the
sale of marketable securities are based on the specific identification method.

         The following is a summary of the investments in marketable  securities
at March 31, 2000:


<PAGE>

<TABLE>
<CAPTION>


                                                                           GROSS UNREALIZED
                                                              COST           GAINS      LOSSES    MARKET VALUE

  <S>                                                <C>               <C>            <C>           <C>
  Available for sale marketable securities:
    U.S. Treasury securities and debt securities
      of U.S. Government agencies                    $       23,302,385 $    44,315  $     23,118   $       23,367,896
    Corporate debt securities                                 8,976,442       1,615        32,999            8,944,795
    Debt Securities issued by foreign
      governments                                             1,503,649        --           4,684            1,498,965
                                                     ------------------ -----------    ----------    -----------------
                                                             33,782,475      45,930        60,801           33,811,656
    Less: long term restricted cash                         (22,048,488)    (44,315)         (263)         (22,092,540)
                                                     ------------------ -----------    ----------    -----------------
                                                     $       11,433,987 $     1,615  $     60,538   $       11,719,116
                                                     ================== ===========  =============  ==================
</TABLE>

         Net  proceeds  from  the  sales  and  maturity  of  available  for sale
securities were approximately  $50.9 million during the three months ended March
31, 2000.

         The amortized  cost and market value of available  for sale  marketable
securities  by   contractual   maturity,   regardless  of  their  balance  sheet
classification, at March 31, 2000 is as follows:
<TABLE>
<CAPTION>

                                                                        COST                  MARKET VALUE

         <S>                                                    <C>                     <C>
         Due in one year or less                                $       33,782,475      $       33,811,656
         Due after one year through two years                                   --                      --
                                                                ------------------      ------------------
                                                                        33,782,475              33,811,656
         Less: long term restricted cash                               (22,018,488)            (22,092,540)
                                                                ------------------      ------------------
                                                                $       11,433,987      $       11,719,116
                                                                ==================      ==================
</TABLE>

         Expected maturities may differ from contractual  maturities because the
issuers  of the  securities  may have the  right to prepay  obligations  without
prepayment penalties.

7.       PROPERTY AND EQUIPMENT

         Property and  equipment,  stated at cost, is comprised of the following
at March 31, 2000 and December 31, 1999:



<PAGE>

<TABLE>
<CAPTION>

                                                                       MARCH 31,                DECEMBER 31,
                                                                           2000                   1999
                                                                   -----------------            ---------

         <S>                                                      <C>                     <C>
         Network in progress                                      $      86,655,041       $       63,123,322
         Communications network                                          75,594,507               71,604,029
         Office and computer equipment                                    4,288,020                2,262,934
         Furniture and fixtures                                             956,536                1,555,771
         Leasehold improvements                                             377,749                  337,181
                                                                   ----------------       ------------------
                                                                        167,871,853              138,883,237
         Less: accumulated depreciation                                  (9,506,833)              (6,954,872)
                                                                  -----------------       ------------------
         Property and equipment, net                                   $158,365,020        $     131,928,365
                                                                  =================       ==================
</TABLE>

         Network in progress  includes  (i) all direct  material and labor costs
together  with  related  allocable   interest  costs,   necessary  to  construct
components of a high capacity digital wireless and fiber optic network, and (ii)
network related  inventory parts and equipment.  The network in progress balance
as March 31, 2000 includes  approximately  $53.8  million for costs  incurred to
construct digital fiber optic networks and $2.8 million for a right of use under
an agreement with Northern Border Pipeline for microwave access.  When a portion
of the network has been completed and made available for use by the Company, the
accumulated  costs are  transferred  from network in progress to  communications
network and depreciated.

8.       DEFERRED FINANCING COSTS

         The Company has incurred  costs related to Pathnet's  Debt Offering and
the  amendment  to the  Senior  Notes  in  connection  with  the  reorganization
transaction.  Such costs are  amortized  over the term of the debt or  financing
arrangement other than when financing has not been obtained,  in which case, the
costs are expensed immediately.

9.       RESTRICTED CASH

         Restricted cash comprises  amounts held in escrow to collateralize  the
Company's obligations under certain of its development  agreements together with
cash and cash equivalents of approximately  $21.6 million held as collateral for
repayment of interest on the  Company's  Senior Notes  through  April 2000.  The
funds in each escrow  account are  available  only to fund the projects to which
the escrow is related.  Generally, funds are released from escrow to pay project
costs as incurred.  During the three  months  ended March 31, 2000,  the Company
deposited  approximately  $9.2  million in escrow and $0.2  million was released
from escrow.

10.      COMMITMENTS AND CONTINGENCIES

         As of March 31,  2000,  the Company had  capital  commitments  of up to
approximately  $84.8  million  relating to  telecommunication  and  transmission
equipment and its agreement with WFI, Tri-States and CapRock.

        On  April  19,  2000,  Pathnet,  Inc.  was  sued by  several  plaintiffs
purporting to represent a class of  landowners  damaged by Pathnet in connection
with the  development  of  Pathnet's  fiber  optic  network.  Specifically,  the
complaint  alleges that Pathnet installed fiber optic facilities on the property
of the landowners in the class without obtaining the necessary legal rights from
the landowners.  Based on the information currently available to us, in the vast
majority of the  jurisdictions  in which Plaintiff  alleges  violations,  we are
unaware of any facts that would support Plaintiff's claims. In the jurisdictions
in which there is uncertainty as to the factual basis for Plaintiff's claims, we
believe that we have valid defenses to Plaintiff's  claims. We also believe that
we would be indemnified against Plaintiff's claims by our co-development partner
on that  project.  Accordingly,  based  upon our  current  understanding  of the
factual basis for  Plaintiff's  claims and the likelihood of success,  we do not
believe  that  Plaintiff's  claims  will have a material  adverse  effect on the
earnings, cash flow or financial position of the Company.

11.      REORGANIZATION

        On  March  30,  2000,  the  Company  completed  a  strategic  investment
transaction with Colonial Pipeline Company, The Burlington Northern and Santa Fe
Corporation  and  CSX  Corporation.  As  part of the  transaction,  the  Company
received a contribution  of over 12,000 miles of rights of way with an estimated
value of  approximately  $187.0 million.  Generally,  the Company does not begin
amortizing  rights of way used in its network until the network is completed and
available  for use. As of March 31, 2000,  none of the rights of way obtained in
the reorganization transaction were available for use.

         In return for the rights of way, the Company issued 8,511,607 shares of
the Company's  Series D convertible  preferred stock. In addition to providing a
portion of the rights of way access,  Colonial  Pipeline  paid $43.0  million in
cash to the  Company,  comprised  of $38.0  million at the  initial  closing for
1,729,631  shares of the Company's  Series E redeemable  preferred  stock,  $1.0
million  for the  issuance  of an option  to  purchase  1,593,082  shares of the
Company's Series E redeemable preferred stock for $21.97 per share in connection
with an initial  public  offering and $4.0  million for rights in 2,200  conduit
miles of our future  network.  Colonial  Pipeline will pay an  additional  $25.0
million for  1,137,915  shares of the  Company's  Series E redeemable  preferred
stock upon the  completion  of a  fiber-optic  network  segment that the Company
expects  to  complete  during  the  second  calendar  quarter  of 2000.  The new
investors  collectively  received an approximate  one-third  equity stake in the
Company, as well as representation on the Company's Board of Directors.

         Upon the closing of the transaction,  all of the Pathnet's common stock
was  exchanged for common stock of the Company  resulting in Pathnet  becoming a
wholly-owned subsidiary of the Company and all of the Pathnet's 5,470,595 shares
of mandatorily redeemable preferred stock being converted into 15,864,715 of the
Company's convertible preferred stock.

         The  Company  obtained  consents  to the  waiver and the  amendment  of
certain  provisions of the indenture from the holders of a majority of Pathnet's
Senior Notes. In return for such consents, (i) Pathnet made consent fee payments
to consenting  noteholders  of  approximately  $7.3 million in the aggregate and
purchased  and pledged to the trustee under the indenture for the benefit of the
noteholders,  additional  U.S.  Treasury  Securities  as security  covering  the
October  16,  2000  interest  payment  on the  Senior  Notes  and  (ii)  Pathnet
Telecommunications  issued its senior  guarantees of the Senior Notes.  The $7.3
million consent payment to the bondholders  increased  deferred  financing costs
and is being amortized over the remaining term of the Senior Notes. In addition,
for the quarter  ended March 31, 2000,  the Company had  expensed  approximately
$1.4 million of fees for printing,  legal,  solicitation  and other  transaction
fees.




<PAGE>



ITEM 2.    MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
           RESULTS OF OPERATIONS

     CERTAIN  STATEMENTS  CONTAINED  IN  THIS  ITEM  CONSTITUTE  FORWARD-LOOKING
STATEMENTS. SEE. "FORWARD-LOOKING STATEMENTS" BELOW. IN THIS REPORT, WE REFER TO
PATHNET TELECOMMUNICATIONS, INC., AS THE "COMPANY," "WE," "US," AND "OUR." WHERE
APPLICABLE, SUCH REFERENCES REFER TO PATHNET, INC.,OR "PATHNET", THE PREDECESSOR
REPORTING COMPANY PRIOR TO THE REORGANIZATION TRANSACTION COMPLETED ON MARCH 30,
2000.

OVERVIEW

                  We were formed on November  1, 1999 in order to  facilitate  a
reorganization  transaction  with  Pathnet,  Inc.  which is now our wholly owned
subsidiary.  Our reorganization  was completed on March 30, 2000.  Together with
Pathnet,  we are a wholesale  telecommunications  provider building a nationwide
network  designed  to provide  other  wholesale  and  retail  telecommunications
service  providers with access to underserved  and second and third tier markets
throughout the United States.

         Our  network  will  enable  our  customers,  including  existing  local
telephone  companies,  long  distance  companies,  internet  service  providers,
competitive   telecommunications   companies,   cellular   operators  and  other
telecommunications  providers,  to offer additional services to new and existing
customers  in these  markets  without  having to expend  their own  resources to
build, expand or upgrade their own networks.

    Since Pathnet's inception in November 1995, our business has focused on:

     o    Entering    into    strategic    relationships    with    owners    of
          telecommunications assets and co-development partners;

     o    Developing and constructing our digital backbone network;

     o    Negotiating collocation and interconnection  agreements and installing
          collocations and interconnections off our backbone network;

     o    Designing  and  developing  our network  architecture  and  operations
          support  systems,  including  the  buildout  and launch of our 24-hour
          network operations center;

     o    Raising capital and hiring management and other key personnel;

     o    Developing "leading edge" products and services; and

     o    Procuring governmental authorizations.

         On March 30, 2000, we completed a strategic investment transaction with
Colonial Pipeline Company,  The Burlington Northern and Santa Fe Corporation and
CSX  Transportation,  Inc. We received the right to develop over 12,000 miles of
these  investors'  rights  of way  holdings,  8,000 of which  have  some form of
exclusivity.  In  addition  to  providing a portion of the rights of way access,
Colonial also made a contribution of $43.0 million in cash  (consisting of $38.0
million as a first tranche cash investment, $1.0 million for options to purchase
additional  shares of our stock and $4.0  million  for rights in a single  fiber
optic  conduit) and agreed to make a second cash  investment of $25.0 million in
our business  upon the  completion of our Chicago to Aurora (a suburb of Denver)
fiber optic network build. Our new investors hold approximately one-third of our
equity and have representation on our Board of Directors.

         As of March 31,  2000,  our network  consisted  of over 6,300  wireless
route miles,  providing wholesale transport services to 44 cities, and 700 miles
of installed fiber. We are constructing an additional 1,000 route miles of fiber
optic network, 500 of which is scheduled for completion by the end of the second
quarter of this year. During 2000, we intend to deploy  additional  products and
services including bundled wholesale transport and local access services.

    We have  experienced  operating  losses since our  inception,  and we expect
these operating losses to continue as we expand our operations. Implementing our
business  plan will require  significant  capital  expenditures.  Our  financial
performance  will vary from market to market,  and the time when we will achieve
positive earnings before interest, taxes,  depreciation and amortization,  if at
all, will depend on the:

    o Size of our target markets;
    o Timely completion of backbone routes, collocations and interconnections;
    o Cost of the  necessary  infrastructure;
    o Timing of and  barriers to market entry; and
    o Commercial acceptance of our services.

RESULTS OF OPERATIONS

THREE MONTHS ENDED MARCH 31, 2000 COMPARED WITH THE THREE MONTHS ENDED
MARCH 31, 1999

         During  the  three  months  ended  March 31,  2000,  we  completed  our
reorganization,  which  included our  acquisition of rights of way and cash from
our investors. We also continued to focus on:

     o    expanding the number of cities and collocations in our network,

     o    building out our fiber network,

     o    obtaining  the  regulatory  status and entering  into  interconnection
          agreements  in each of our  target  markets  to  enable  us to  obtain
          unbundled  network  elements and central  office  space from  existing
          local telephone companies, and

     o    developing our  infrastructure  including the hiring of key management
          personnel.

         REVENUE

         For the three  months  ended  March 31,  2000 and  1999,  we  generated
revenue of approximately $1.9 million and $826,000,  respectively,  comprised of
revenue from telecommunications services of approximately $922,000 and $526,000,
respectively,  together with revenue from construction services of approximately
$1.0  million  and  $250,000,   respectively.   The  increase  in  revenue  from
construction  services  arises  mainly from our  co-development  agreement  with
Tri-State Generation and Transmission Association,  Inc. entered into during the
third  quarter  of 1999.  We expect  that a  substantial  portion  of our future
revenue will be generated from our sale of construction  services,  local access
services and backbone infrastructure services.

         OPERATING EXPENSES

         For the three  months  ended  March  31,  2000 and  1999,  we  incurred
operating   expenses  of   approximately   $13.1   million  and  $6.0   million,
respectively.  This  increase is  primarily a result of  additional  staff costs
incurred as we continued to develop our infrastructure, depreciation expenses as
more of our network  came on line,  administrative  costs  related to  obtaining
regulatory  status,  deferred expense for  compensatory  stock options and costs
associated with our reorganization transaction.  Cost of revenue reflects direct
costs we  incurred  in  performing  construction  and  management  services  and
providing   telecommunications   services.   We  expect  selling,   general  and
administrative  expenses to continue to increase in the  remainder of 2000 as we
continue to develop or infrastructure and increase our staff level.

         INTEREST EXPENSE

         Interest expense for the three months ended March 31, 2000 and 1999 was
approximately  $9.7 million and $10.3 million,  respectively.  Interest  expense
primarily  represents interest on Pathnet's 12 1/4% Senior Notes due 2008 issued
in April 1998 together with the  amortization  expense  related to bond issuance
costs in respect to those notes and the amortization expense related to deferred
financing costs.

         INTEREST INCOME

         Interest  income for the three months ended March 31, 2000 and 1999 was
approximately  $2.2  million and $3.8  million,  respectively.  The  decrease in
interest income reflects a decrease in cash and cash  equivalents and marketable
securities as those funds were used in building our network, funding operations,
and making interest payments on the senior notes.

LIQUIDITY AND CAPITAL RESOURCES

    As of March 31, 2000,  we had  approximately  $130.3  million of cash,  cash
equivalents and marketable securities to fund future operations. In addition, we
had $25.8 million in restricted cash to be used to build our network.  We expect
to receive an additional $25 million equity  investment upon the completion of a
fiber optic network during the second calendar quarter of 2000.

    In addition,  we expect to finance the cost of some of our equipment through
vendor financing arrangements. We have negotiated with Lucent Technologies, Inc.
a proposed credit facility in which Lucent will,  subject to certain  conditions
(including  the closing of our  reorganization),  provide us with  financing for
fiber optic cable that we purchase from them.

    We  estimate  that our  current  available  resources,  together  with those
received in our reorganization, will be sufficient to fund the implementation of
our long term business  plan, as currently  contemplated,  including the capital
commitments described above, operating losses in new markets and working capital
needs  through the fourth  quarter of 2000.  After such time,  we expect we will
require  additional  financing,  which may include  commercial bank  borrowings,
additional  vendor  financing  or  the  sale  or  issuance  of  equity  or  debt
securities.

    Our  expectations  of our future  capital  requirements  and cash flows from
operations are based on current estimates. If our plans or assumptions change or
prove  to be  inaccurate,  we may  require  additional  sources  of  capital  or
additional capital sooner than anticipated.

FORWARD-LOOKING STATEMENTS

         The   matters   discussed   in  this   quarterly   report  may  include
forward-looking statements,  including statements which can be identified by the
use of forward-looking terminology such as "believes," "anticipates," "expects,"
"may,"  "will,"  or  "should"  or the  negative  of such  terminology  or  other
variations on such terminology or comparable  terminology,  or by discussions of
strategies  that involve risks and  uncertainties.  Although we believe that the
expectations  reflected in such  forward-looking  statements are reasonable,  we
cannot  assure you that such  expectations  will prove to be correct.  Important
factors that could cause actual results to differ  materially from  expectations
include,   without   limitation,   those  described  in  conjunction   with  the
forward-looking  statements in this quarterly  report,  as well as the amount of
capital  needed to deploy our  network;  our  substantial  leverage  and need to
service our indebtedness;  the restrictions  imposed by our current and possible
future  financing   arrangements;   our  ability  to  successfully   manage  the
cost-effective  and timely  completion of our network and our ability to attract
and retain customers for our products and services; our ability to implement our
newly expanded  business  plan; our ability to retain and attract  relationships
with the incumbent owners of the telecommunications  assets with which we expect
to build our network;  our ability to obtain and maintain  rights of way for the
deployment of our network;  our ability to retain and attract key management and
other  personnel  as well as our  ability to manage the rapid  expansion  of our
business  and  operations;  our  ability to  compete  in the highly  competitive
telecommunications  industry  in  terms  of  price,  service,   reliability  and
technology;  our  dependence on the  reliability of our network  equipment,  our
reliance on key suppliers of network  equipment and the risk that our technology
will become obsolete or otherwise not  economically  viable;  and our ability to
conduct  our  business in a  regulated  environment.  We do not intend to update
these  forward-looking  statements.  These  and other  risks  and  uncertainties
affecting us are contained  from time to time in our filings with the Securities
and Exchange Commission.

ITEM 3.    QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

    We are exposed to minimal market risks. We manage sensitivity of our results
of  operations  to  market  risks  by  maintaining  a  conservative   investment
portfolio,  (which primarily consists of debt securities,  that typically mature
within one year),  and entering into long-term debt obligations with appropriate
pricing and terms. We do not hold or issue derivative,  derivative  commodity or
other financial instruments for trading purposes. Financial instruments held for
other than trading purposes do not impose a material market risk on us.

    We are exposed to interest rate risk. We  periodically  need additional debt
financing due to our large operating losses, and capital expenditures associated
with  establishing  and  expanding our network  coverage  increase our financing
needs.  The interest rate that we will be able to obtain on debt  financing will
depend on market  conditions at that time, and may differ from the rates we have
obtained on our current debt.

         Although all of our long-term debt bears fixed interest rates, the fair
market  value of our fixed  rate  long-term  debt is  sensitive  to  changes  in
interest rates. We have no cash flow or earnings exposure due to market interest
rate changes for our fixed long-term debt obligations. As of March 31, 2000, the
fair value of our debt was approximately $237.6 million.


<PAGE>


PART II.   OTHER INFORMATION

ITEM 1.    LEGAL PROCEEDINGS

                  None

ITEM 2.    CHANGES IN SECURITIES AND USE OF PROCEEDS

         OUR REGISTERED OFFERING

         On March 14, 2000, the Securities and Exchange  Commission declared our
Registration  Statement on Form S-1 (No. 333-91469) effective.  Our Registration
Statement  relates to our offer of our absolute,  unconditional  and  continuing
guarantees of the obligations of Pathnet under the indenture governing Pathnet's
12 1/4 % Senior Notes due 2008, including Pathnet's obligations to make interest
and principal  payments on those notes. We commenced the offer of our guarantees
on March 14, 2000 and terminated the offer on March 27, 2000.

         On March 30, 2000,  after receipt of noteholder  consent to the waivers
under and amendments of the our original Pathnet indenture relating to Pathnet's
notes,  we entered into a supplemental  indenture with Pathnet and the indenture
trustee and issued our guarantees of all of Pathnet's notes under the indenture.
Pursuant to the terms of our  guarantees,  we are  guaranteeing to the holder of
any outstanding note(s) all obligations,  covenants,  liabilities,  undertakings
and  agreements of any kind of Pathnet  contained in the indenture (as amended),
including:

o    the prompt  payment in full,  in United States  currency,  when due, of the
     principal  and of the interest on the notes and all other  amounts that may
     be owing from Pathnet to the holders of the notes under the  indenture  and
     the notes; and

o    the  prompt  performance  and  observance  by  Pathnet  of  all  covenants,
     agreements and conditions to be performed and observed by Pathnet under the
     indenture.

         The guarantees are absolute, unconditional and continuing guarantees of
the  obligations  of Pathnet under the indenture,  including its  obligations to
make  interest  and  principal  payments.  If Pathnet  does not comply  with its
obligations  under the  indenture  the holders may proceed  directly  against us
without  being  required  to seek  payment  or  performance  from  Pathnet.  The
guarantees  will continue in effect with respect to any note until the holder of
that note has received  payment in full of the redemption  price with respect to
that note, when the guarantees terminate. A copy of our guarantee is attached as
an exhibit hereto.

         We had  conditioned  the issuance of our guarantees  upon,  among other
things,  the waiver and  amendment of certain  provisions of the  indenture.  In
particular,  we sought  consent  from  holders of the notes to the (1) waiver of
Pathnet's compliance, for purposes of the reorganization  transaction,  with the
"Change of  Control"  repurchase  obligation  and the  "Excess  Proceeds  Offer"
requirements of the indenture, which otherwise would be triggered by the closing
of the transaction; and (2) adoption of amendments to the terms of the indenture
that are  intended to subject us to indenture  covenants  parallel to those that
were applicable  solely to Pathnet (and, in some cases,  its  subsidiaries)  and
extend the scope of  indenture  tests and  covenants to us and any of our future
subsidiaries. A summary of the indenture amendments is provided below.

         SUMMARY OF THE INDENTURE AMENDMENTS

         The  indenture  amendments  were  designed  to  impose  upon us and our
Restricted  Subsidiaries  restrictions  parallel  to  those  that  the  original
indenture  imposed upon Pathnet and its Restricted  Subsidiaries,  and to permit
transactions  between Pathnet and us (and our other Restricted  Subsidiaries) to
the same extent that the original indenture permitted such transactions  between
Pathnet  and  its  Restricted  Subsidiaries.  The  necessary  amendments  to the
indenture are contained in the supplemental indenture,  which binds both Pathnet
and us.

         The following  table  summarizes  the material  changes to the original
indenture  as  implemented  by the  supplemental  indenture.  The table does not
restate the  supplemental  indenture in its  entirety  and it may omit  detailed
information  important  to some  investors  in  understanding  the  operation of
relevant  covenants of the indenture and the supplemental  indenture in specific
circumstances. Capitalized terms used in this description have the meaning given
to them in the  indenture  as amended by the  supplemental  indenture  unless we
refer to the  "original  indenture,"  in which case terms are used as defined in
that  version.  As used in the table,  "Pathnet"  refers to  Pathnet,  Inc.  and
"Pathnet  Telecom"  refers to us. For more  detailed  information  regarding the
provisions summarized here, you should refer to the supplemental indenture filed
as an exhibit hereto.  In addition to the supplemental  indenture,  the original
indenture is incorporated by reference as set forth in our exhibit list.

<TABLE>
<CAPTION>
                                                                                CHANGES AS INCORPORATED IN THE
       PROVISION                        ORIGINAL INDENTURE                          SUPPLEMENTAL INDENTURE
- - ----------------------        --------------------------------------          ----------------------------
<S>                           <C>                                             <C>
EVENTS OF DEFAULT             Payment defaults on the notes.                  No change for notes; adds failure
                                                                              of guarantees to be in effect.

                              Covenant defaults on the indenture.             Covenant defaults on the
                                                                              indenture, including obligations
                                                                              imposed directly on Pathnet
                                                                              Telecom.

                              Cross defaults to other indebtedness or         Cross defaults to other
                              adverse judgments over $7.5 million             indebtedness or adverse judgments
                              against Pathnet or any Significant              over $7.5 million against any of
                              Subsidiary of Pathnet.                          Pathnet, Pathnet Telecom, or any
                                                                              Significant Subsidiary of either
                                                                              Pathnet or Pathnet Telecom.

                              Bankruptcy proceedings by or in respect         Bankruptcy proceedings by or in
                              of Pathnet or any Significant                   respect of Pathnet, Pathnet
                              Subsidiary of Pathnet.                          Telecom, or any Significant
                                                                              Subsidiary of Pathnet or Pathnet
                                                                              Telecom.

                              Pledge Agreement ceases to be in full           No change.
                              force and effect.

CONSOLIDATION,                Restricts the ability of Pathnet and            Expands the covenant so that it
MERGER, CONVEYANCE,           its Restricted Subsidiaries to enter            applies to Pathnet Telecom and its
TRANSFER OR LEASE             into transactions involving a merger or         consolidated group, rather than
                              disposition of all or substantially all         solely to Pathnet and its
                              of Pathnet's and its Restricted                 consolidated group. Provisions
                              Subsidiaries' assets on a consolidated          relating to the required
                              basis.                                          substitution of successors and the
                                                                              requirement to secure the notes in
                                                                              certain circumstances apply to
                                                                              Pathnet obligations under the
                                                                              notes and as appropriate to
                                                                              Pathnet Telecom obligations under
                                                                              the guarantees.

AMENDMENTS                    Certain types of amendments (and                Provides that Pathnet Telecom and
TO THE INDENTURE              supplemental indentures) may be adopted         Pathnet can amend the indenture in
                              without consent of noteholders.                 the same circumstances, and with
                                                                              the same levels of approvals, as
                                                                              Pathnet is permitted to make such
                                                                              amendments under the original indenture.

                              Most types of amendments (and                   Applies to the supplemental
                              supplemental indentures) may be adopted         indenture the same majority consent
                              with the consent of a majority of the           threshold for those amendments that
                              noteholders.                                    require such a majority
                                                                              in the original indenture.

                              Certain types of amendments (and                Subjects Pathnet Telecom to the
                              supplemental indentures) may not be             unanimous consent threshold for the
                              adopted without the consent of all              amendments requiring unanimous
                              noteholders.                                    consent in the original indenture,
                                                                              and adds to that list any
                                                                              amendment that modifies the
                                                                              provisions of the indenture
                                                                              relating to the guarantees in a
                                                                              manner adverse to the noteholders.

MAINTENANCE OF                Pathnet must maintain an office or              Both Pathnet and Pathnet Telecom
OFFICE                        agency in New York City for service of          must maintain an office or agency
                              notices and demands.                            in New York City for the service of
                                                                              notices and demands under the notes
                                                                              and the guarantees, on the same
                                                                              terms as that obligation
                                                                              applies to Pathnet.

MONEY FOR NOTE                Regulates Pathnet's dealings with               Regulates Pathnet Telecom's
PAYMENTS                      Paying Agents and its ability to act as         dealings with Paying Agents and
                              its                                             own Paying Agent. Pathnet
                                                                              Telecom's ability to make payments
                                                                              directly to the holders of the
                                                                              guarantees in the same manner as
                                                                              Pathnet's dealings are regulated
                                                                              under the indenture.

CORPORATE                     Pathnet and its subsidiaries must               Expands the covenant so that it
EXISTENCE                     maintain corporate existence.                   also applies to Pathnet Telecom and
                                                                              its other subsidiaries.

PAYMENT OF TAXES              Pathnet and its subsidiaries must pay           Expands the covenant so that it
AND OTHER CLAIMS              taxes and other claims.                         also applies to Pathnet Telecom and
                                                                              its other subsidiaries.

MAINTENANCE OF                Pathnet and Restricted Subsidiaries             Expands the covenant so that it
PROPERTIES                    must maintain material properties in            also applies to Pathnet Telecom and
                              good condition and repair.                      its Restricted Subsidiaries.

INSURANCE                     Pathnet and Restricted Subsidiaries             Expands the covenant so that it
                              must maintain customary insurance.              also applies to Pathnet Telecom and
                                                                              its Restricted Subsidiaries.

OFFICERS COMPLIANCE           Required from Pathnet.                          Required from Pathnet and from
CERTIFICATE                                                                   Pathnet Telecom.

FINANCIAL STATEMENTS          Pathnet must file Exchange Act reports          Pathnet Telecom must file Exchange
                              with the SEC (whether or not required           Act reports (including consolidated
                              by law to do so) and must provide               reports) with the SEC (whether or
                              Trustee with copies.                            not required by law to do so) and
                                                                              must provide Trustee with copies.
                                                                              To the extent permitted in the
                                                                              future by applicable law, releases
                                                                              Pathnet from separate SEC and
                                                                              Trustee periodic report filing
                                                                              obligations.

CHANGE OF CONTROL             Pathnet required to offer to repurchase         No change to Pathnet's obligation.
REPURCHASE                    the notes at a premium upon occurrence          Expands the provision so that
OBLIGATION                    of a Change of Control.                         Pathnet's repurchase obligation is
                                                                              also triggered by a Change of
                                                                              Control of Pathnet Telecom;
                                                                              guarantees apply to this
                                                                              obligation.

LIMITATION ON                 Subject to a ratio test for                     Expands the existing covenant so
INDEBTEDNESS                  Consolidated Indebtedness to                    that both Pathnet and Pathnet
                              Consolidated Operating Cash Flow Test           Telecom are subject to the same
                              for Pathnet and its Restricted                  limitations (including the
                              Subsidiaries, neither Pathnet nor its           limitations on their respective
                              Restricted Subsidiaries can incur               Restricted Subsidiaries), except
                              Indebtedness other than Permitted               that:
                              Indebtedness. Permitted Indebtedness
                              includes Telecommunications                     (1) the definition of Permitted
                              Indebtedness of either Pathnet or any           Indebtedness continues to
                              Restricted Subsidiary; subordinated             include Telecommunications
                              indebtedness of Pathnet to its                  Indebtedness, but applies to
                              Restricted Subsidiaries; and any                Pathnet Telecom's Restricted
                              indebtedness of a Restricted Subsidiary         Subsidiaries as well as
                              to Pathnet or to any other Restricted           Pathnet's, and allows
                              Subsidiary.                                     intercompany Indebtedness among
                                                                              Pathnet Telecom, Pathnet, and
                                                                              their respective Restricted
                                                                              Subsidiaries subject to the
                                                                              corresponding restrictions; and
                                                                              (2) the Consolidated Indebtedness
                                                                              to Consolidated Operating Cash
                                                                              Flow Ratio used to determine
                                                                              whether any of the covered
                                                                              entities can incur additional debt
                                                                              is calculated by reference to
                                                                              Pathnet Telecom, Pathnet and all
                                                                              Restricted Subsidiaries on a
                                                                              consolidated basis.

RESTRICTED PAYMENTS           Restricts Pathnet and its Restricted            Changes the cash dividend
LIMITATION                    Subsidiaries from declaring cash                declaration and capital stock
                              dividends on Pathnet capital stock,             redemption restrictions to apply to
                              redeeming capital stock or subordinated         Pathnet Telecom rather than to
                              debt of Pathnet, or making investments          Pathnet. Imposes parallel restrictions
                              (other than Permitted Investments),             on Pathnet Telecom's ability to make
                              unless Pathnet could, after such                other Restricted Payments.
                              payment, incur additional Indebtedness
                              under the Permitted Indebtedness
                              covenant and the aggregate amount of
                              permitted Restricted Payments does not
                              exceed an amount determined as
                              described in the Restricted Payments
                              covenant.

SALE OF CAPITAL STOCK         Restricts the sale or issuance of               Expands the covenant to apply to
OF RESTRICTED                 Capital Stock of Restricted                     capital stock of Pathnet and
SUBSIDIARIES                  Subsidiaries of Pathnet to third                Restricted Subsidiaries of both
                              parties.                                        Pathnet Telecom and Pathnet.

TRANSACTIONS WITH             Restricts transactions by Pathnet and           Imposes the same restriction on
AFFILIATES                    its Restricted Subsidiaries with                Pathnet Telecom and its Restricted
                              Affiliates unless conducted on an               Subsidiaries and expands the
                              arms'-length basis.                             definition of Affiliates to include
                                                                              all Affiliates of Pathnet Telecom.
                                                                              As provided in the original
                                                                              indenture for transactions among
                                                                              Pathnet and its own Restricted
                                                                              Subsidiaries, the supplemental
                                                                              indenture provides that
                                                                              transactions among any of Pathnet
                                                                              Telecom, Pathnet and any
                                                                              Restricted Subsidiary are not
                                                                              restricted.

LIEN RESTRICTIONS             Neither Pathnet nor any Restricted              Expands the restriction to include
                              Subsidiary can permit any Lien to exist         Pathnet Telecom and its Restricted
                              other than Permitted Liens, unless the          Subsidiaries, and expands the
                              notes are equally and ratably secured.          definition of "Permitted Liens" to
                              Permitted Liens include liens for               include liens among Pathnet
                              Telecommunications Indebtedness and             Telecom, Pathnet and their
                              liens among Pathnet and any Restricted          respective Restricted Subsidiaries.
                              Subsidiary.

LIMITATIONS ON                Prohibits Restricted Subsidiaries of            Expands the restrictions to apply
GUARANTEES AND                Pathnet from issuing or guaranteeing            to Pathnet Telecom's Restricted
OTHER DEBT                    Debt Securities unless they                     Subsidiaries; exception for vendor
                              concurrently guarantee the notes;               financings and other borrowings
                              specific exception excludes from the            continues to apply.
                              definition of Debt Securities any
                              vendor equipment financing facilities
                              or similar financings and other
                              borrowings incurred in a manner not
                              customarily viewed as a securities
                              offering.

LIMITATION ON ASSET           Pathnet and its Restricted Subsidiaries         Retains unmodified Pathnet's
SALES                         may not engage in an Asset Sale unless          obligations in respect of Asset
                              the transaction is for fair market              Sales. Imposes corresponding
                              value and meets other requirements as           obligations on Pathnet Telecom and
                              to the nature of the consideration; if          its Restricted Subsidiaries.
                              the amount of proceeds exceeds a
                              specified threshold, Pathnet is
                              required to commence an offer to
                              purchase notes up to such amount within
                              15 business days of the closing of the
                              Asset Sale.

PROHIBITION AGAINST           Subject to exceptions, including, among         Expands the existing covenant to
DIVIDEND RESTRICTIONS         others, those for Secured Indebtedness          apply to Pathnet and to Restricted
                              and Telecommunications Indebtedness,            Subsidiaries of both Pathnet and
                              Pathnet cannot permit any Restricted            Pathnet Telecom.
                              Subsidiary to accept a restriction on
                              its ability to pay dividends or make
                              other payments to Pathnet or any
                              Restricted Subsidiary of Pathnet to the
                              extent necessary to permit Pathnet to
                              make payment on the notes.

SECURITY                      Pathnet acquired Government Securities          Pathnet acquired additional
                              and pledged them to the Trustee as              Government Securities and pledged
                              security for the benefit of the noteholders     them to the trustee as security for
                              with respect to the payment of the first        the benefit of the noteholders
                              four scheduled interest payments on             with respect to the October 16, 2000
                              the notes (through the April 15, 2000           interest payment on the notes.
                              interest payment date).


</TABLE>


<PAGE>


         SALES OF UNREGISTERED SECURITIES DURING THE FIRST QUARTER

     OVERVIEW.  On March 30, 2000, we completed a transaction involving a single
plan of contribution and reorganization in
which, among other things:

     o    existing  stockholders of Pathnet  exchanged their shares of Pathnet's
          common stock and Series A, B and C Convertible  Preferred Stock solely
          in return for substantially similar shares of our common stock and our
          Series A, B and C Convertible Preferred Stock;

     o    warrants to purchase shares of Pathnet common stock were exchanged for
          warrants to purchase similar shares of our common stock;

     o    we adopted the employee  stock option plans  formerly  held by Pathnet
          (and the option grants made under those plans);

     o    Pathnet became our wholly owned subsidiary;

     o    three new  investors - The  Burlington  Northern  and Santa Fe Railway
          Company,  CSX  Transportation,  Inc. and Colonial  Pipeline  Company -
          contributed  to us rights  of way,  with a value of $187  million,  to
          permit us to build our telecommunications network along their existing
          railroad and pipeline corridors,  in return for shares of our Series D
          Convertible Preferred Stock; and

     o    Colonial also  contributed  $38 million in cash to purchase  shares of
          our Series E Convertible  Preferred Stock and an additional $1 million
          for options to purchase additional shares of our stock.

          SHARES OF STOCK. In connection with the closing of the  reorganization
     transaction,  we issued the  following  shares of our  capital  stock (each
     issued on March 30, 2000):

 <TABLE>
<CAPTION>

                                              AMOUNT (IN THE
TITLE OF OUR SHARES                           AGGREGATE)        HOLDER(S)
- - -------------------                           ----------        ---------
<S>                                           <C>               <C>

Series A Convertible Preferred Stock          2,899,999         Former holders of Pathnet's Series A Convertible
                                                                Preferred Stock

Series B Convertible Preferred Stock          4,725,457         Former holders of Pathnet's Series B Convertible
                                                                Preferred Stock

Series C Convertible Preferred Stock          7,126,576         Former holders of Pathnet's Series C Convertible
                                                                Preferred Stock

Series D Convertible Preferred Stock          8,511,607         The Burlington Northern and Santa Fe Railway Company,
                                                                CSX Transportation, Inc. and Colonial Pipeline Company

Series E Convertible Preferred Stock          1,729,631         Colonial Pipeline Company

Common stock                                  2,977,593         Former holders of Pathnet's common stock
</TABLE>


         OUR WARRANTS. On March 30, 2000, in connection with the reorganization,
we issued  warrants to purchase a total of 1,116,500  shares of our common stock
at $0.01 per share to holders of, and in exchange for,  similar  warrants issued
by Pathnet in 1998 to purchase  shares of Pathnet's  common stock.  Our warrants
are exercisable upon the earliest to occur of:

     o    the time  immediately  prior to the  occurrence of a Change of Control
          (as defined in the indenture);

     o    the 180th day (or an earlier  date  determined  by us)  following  the
          closing of an  "Initial  Public  Equity  Offering"  (as defined in the
          Warrant Agreement);

     o    upon the closing of an Initial  Public  Equity  Offering  but only for
          those  warrants  required to be exercised  to permit their  holders to
          sell Warrant Shares (as defined in the Warrant Agreement)  pursuant to
          their respective registration rights;

     o    the time when a class of our equity securities is listed on a national
          securities  exchange,  authorized for quotation on the Nasdaq National
          Market or its  otherwise  subject to  registration  under the Exchange
          Act; or

     o    April 30, 2001.

     We entered into a Supplemental Warrant Agreement,  containing substantially
identical terms as Pathnet's  original  Warrant  Agreement,  with  modifications
reflecting the  substitution of us in place of Pathnet as the contracting  party
and related conforming  changes.  The terms governing our warrants are set forth
in the Warrant  Agreement,  Supplemental  Warrant  Agreement,  Warrant Agreement
Amendment  and  Waiver,   Warrant   Registration   Rights   Agreement,   Warrant
Registration Rights Agreement Waiver,  Amended and Restated Warrant Registration
Rights Agreement and the form of warrant certificate,  all of which are attached
as exhibits hereto.

         COLONIAL   OPTIONS.   On  March  30,  2000,  in  connection   with  the
reorganization,  Colonial  received  two  options  pursuant  to the terms of the
Colonial Option  Agreement,  which is attached as an exhibit  hereto,  for which
Colonial paid us $1 million:

o    The first option may be exercised by Colonial and/or a number of Colonial's
     affiliated  companies,   and  permits  the  purchase  of  up  to  1,593,082
     additional  shares  of our  series  E  convertible  preferred  stock  at an
     exercise  price of $21.97 per share and, under certain  circumstances,  the
     contribution  of  additional  rights of way in  exchange  for shares of our
     series D convertible  preferred stock at $21.97 per share pursuant to a new
     contribution agreement between Colonial and us.

o    The second  option  permits  Colonial to purchase a number of shares of our
     common  stock  equal to 10% of the total  number of shares of common  stock
     that we actually sell in any initial  public  offering of our common stock.
     This second option must be exercised by Colonial at least ten days prior to
     the filing of our registration  statement for an initial public offering of
     our common  stock,  but the shares will be issued only if and when we close
     on a firm commitment  underwritten  initial public  offering.  The price at
     which Colonial may purchase our shares under this option will be 90% of the
     price  per  share of the  common  stock  offered  by us to the  public,  as
     reflected in the final  prospectus filed with respect to our initial public
     offering.

         EMPLOYEE STOCK OPTIONS.  As of March 31, 2000, pursuant to the exercise
of stock  options,  we issued  198,514  shares of common stock to certain former
employees at exercise prices ranging from $1.13 to $5.20 per share. All of these
stock options were granted under Pathnet's 1997 Stock  Incentive Plan,  which we
assumed at the closing of the reorganization transaction.

         There  were  no  underwriters  involved  in the  sale  of any of  these
securities.  Our equity securities were issued in private placement transactions
exempt from  registration  in accordance with Section 4(2) of the Securities Act
of 1933, as amended, and where applicable, Rule 506 under Regulation D, and were
issued without general solicitation or advertising.

         USE OF PROCEEDS

         We did not receive any proceeds from the issue of our guarantees.

         The aggregate amount of expenses incurred for our account in connection
with the issuance and distribution of the guarantees is estimated at $9,504,517,
consisting of the following:
<TABLE>
<CAPTION>

           <S>                                                                     <C>
           Securities and Exchange Commission registration fee...........          $         60,326
           Blue Sky fees and expenses....................................                     1,300
           Accounting fees and expenses..................................                    50,000
           Legal fees and expenses.......................................                 1,550,603
           Printing and engraving fees...................................                   345,000
           Solicitation Agent fees and expenses..........................                   768,163
           Information Agent fees and expenses...........................                 6,591,625
           Miscellaneous.................................................                    25,000
           Trustee/Depositary/Warrant Agent fees and expenses............                   112,500
                                                                                    ---------------
                Total....................................................          $      9,504,517
                                                                                    ===============
</TABLE>


                  *Also attributable to the overall reorganization transaction.


ITEM 3.    DEFAULTS UPON SENIOR SECURITIES

                  None

ITEM 4.    SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

         On March 30, 2000,  we solicited  written  consents from the holders of
our Series D  Convertible  Preferred  Stock and Series E  Convertible  Preferred
Stock to (i) approve the election of Messrs A. R. "Pete" Carpenter,  Thomas Hund
and David  Lemmon as the Series D/E  Stockholder  Directors  (as  defined in the
Company's  Stockholders  Agreement dated as of March 30, 2000); and (ii) approve
and ratify the  election of Richard A. Jalkut,  Chief  Executive  Officer,  as a
Director.  Effective March 30, 2000, we received written consents approving such
proposals from our Series D and E Preferred Stockholders representing 10,241,238
votes with no  abstentions.  The terms of office as directors  of Messrs.  Kevin
Maroni, Peter Barris,  Patrick Kerins and Stephen  Reinstadtler  continued after
March 30, 2000.

         On March 30, 2000,  we solicited  written  consents from the holders of
our Series A Convertible  Preferred Stock, Series B Convertible Preferred Stock,
Series C Convertible  Preferred Stock, Series D Convertible  Preferred Stock and
Series E Convertible Preferred Stock to approve our issuance of (i) a promissory
note to Pathnet  due March 30,  2010 in the  principal  amount of $70 million in
exchange for certain fiber assets under  assignment and  acceptance  agreements;
and (ii) a promissory note to Pathnet due March 30, 2010 in the principal amount
of $50 million in  exchange  for cash.  Effective  March 30,  2000,  we received
unanimous   written   consent   approving  such  proposals  from  our  preferred
stockholders representing 26,105,953 votes.

         On March 30, 2000,  we solicited  written  consents from the holders of
our Common Stock,  Series A Convertible  Preferred  Stock,  Series B Convertible
Preferred  Stock,  Series C Convertible  Preferred  Stock,  Series D Convertible
Preferred  Stock and Series E  Convertible  Preferred  Stock to approve  (i) the
assumption  Pathnet's of stock option  plans and all stock  options  outstanding
under those stock option plans; and (ii) the reservation of shares of our common
stock for issuance  under our stock option plans.  Effective  March 30, 2000, we
received  written  consents  approving  such  proposals  from  our  stockholders
representing  21,149,709 votes, with stockholders  representing  6,821,154 votes
abstaining.


ITEM 5.    OTHER INFORMATION

                  None

ITEM 6.    EXHIBITS AND REPORTS ON FORM 8-K

         (A)      EXHIBITS

                  Exhibit Index

         (B)      REPORTS ON FORM 8-K

                  None

<PAGE>




                                   SIGNATURES

         Pursuant to the requirements of the Securities Exchange Act of 1934, as
amended,  the  Registrant has duly caused this report to be signed on its behalf
by the undersigned, thereunto duly authorized.

                             PATHNET TELECOMMUNICATIONS, INC.,
                             a Delaware corporation
                                  (Registrant)



Date:    May 15, 2000                  By: /S/  RICHARD A. JALKUT
                                             ----------------------
                                              Richard A. Jalkut
                                               President and Chief Executive
                                                Officer



Date:    May 15, 2000                  By: /S/ JAMES M. CRAIG
                                           -------------------
                                             James M. Craig
                                               Executive Vice-President, Chief
                                                Financial Officer and Treasurer
                                                (Principal Financial Officer and
                                                 Controller)



<PAGE>




                                  EXHIBIT INDEX

Pursuant to Item 601 of Regulation S-K
<TABLE>
<CAPTION>

  EXHIBIT NO.       DESCRIPTION OF EXHIBIT

  <S>               <C>
  3.1 (i)           Certificate of Incorporation of Pathnet  Telecommunications,
                    Inc.
  3.2 (i)           By-laws of Pathnet Telecommunications, Inc.
  4.1 (iii)         Stockholders Agreement, by and among the Pathnet Telecommunications, Inc. and
                    certain stockholders of the Pathnet Telecommunications, Inc.
  4.2 (ii)          Indenture, dated as of April 8, 1998, between Pathnet, Inc. and The Bank of
                    New York, Inc. as Trustee
  4.3 (iii)         Supplemental Indenture, dated as of March 30, 2000, by and among Pathnet, Inc., Pathnet
                    Telecommunications, Inc. and the Bank of New York
  4.4 (ii)          Form of Note
  4.5 (ii)          Pledge Agreement, dated as of April 8, 1998, by and among Pathnet, Inc., The
                    Bank of New York as Trustee and as the Securities Intermediary
  4.6 (iii)         Amended and Restated Pledge Agreement dated as of March 30, 2000, by and among
                    Pathnet, Inc, and the Bank of New York
  4.7 (iii)         Form of Guarantee dated as of March 30, 2000 by Pathnet Telecommunications, Inc.
  4.8 (ii)          Warrant Agreement, dated as of April 8, 1998, between Pathnet, Inc. and
                    The Bank of New York, as Warrant Agent
  4.9 (ii)          Warrant Registration Rights Agreement, dated as of April 8, 1998, by and among Pathnet, Inc.,
                    Spectrum Equity Investors, L.P., New Enterprise Associates VI, Limited Partnership, Onset
                    Enterprise Associates II, L.P., FBR Technology Venture Partners, L.P., Toronto Dominion Capital
                    (U.S.A.) Inc., Grotech Partners IV, L.P., Richard A. Jalkut, David Schaeffer and the Initial
                    Purchasers
  4.10 (iii)        Warrant Agreement Amendment and Waiver, dated as of March 30, 2000, between Pathnet, Inc. and the
                    Bank of New York
  4.11 (iii)        Warrant Registration Rights Agreement Waiver, dated as of March 30, 2000, by Pathnet, Inc. with
                    the consent of Spectrum Equity Investors, L.P., New Enterprise Associates VI, Limited Partnership,
                    Onset Enterprise Associates II, L.P., FBR Technology Venture Partners, L.P., Grotech Partners IV,
                    L.P. and Richard A. Jalkut
  4.12 (iii)        Supplemental Warrant Agreement, dated as of March 30, 2000, between Pathnet Telecommunications,
                    Inc. and the Bank of New York
  4.13 (iii)        Form of Pathnet Telecommunications, Inc. Warrant Certificates issued March 30, 2000
  4.14 (iii)        Amended and Restated Warrant Registration Rights Agreement, dated as of March 30, 2000, among
                    Pathnet Telecommunications, Inc., Spectrum Equity Investors, L.P., New Enterprise Associates VI,
                    Limited Partnership, Onset Enterprise Associates II, L.P., FBR Technology Venture Partners, L.P.,
                    Toronto Dominion Capital (U.S.A.), Inc., Grotech Partners IV, L.P., and Richard A. Jalkut
  10.1 (i) +        Pathnet Telecommunications, Inc. 1995 Stock Option Plan, as amended ( adopted as of March 30, 2000
                    by Pathnet Telecommunications, Inc.)
  10.2 (i) +        Pathnet Telecommunications, Inc. 1997 Stock Incentive Plan, as amended by Amendment No. 1 to the
                    Pathnet, Inc. 1997 Plan dated March 24, 1998 (adopted as of March 30, 2000 by Pathnet
                    Telecommunications, Inc.)
  10.3 (iii) ++     Fiber Optic Access Agreement, dated as of March 30, 2000 by and between Pathnet
                    Telecommunications, Inc. and The Burlington Northern and Santa Fe Railway Company
  10.4              Intentionally omitted
  10.5 (iii)        Master Right-of-Way Lease Agreement, dated as of March 30, 2000 by and between Pathnet
                    Telecommunications, Inc. and Colonial Pipeline Company
  10.6 (iii) ++     Fiber Optic Access and Purchase Agreement, dated as of March 30, 2000 by and between Pathnet
                    Telecommunications, Inc. and Colonial Pipeline Company
  10.7 (iii)        Option Agreement, dated as of March 30, 2000 by and between Pathnet Telecommunications, Inc. and
                    Colonial Pipeline Company
  10.8 (iii) ++     Fiber Optic Access and License Agreement, dated as of March 30, 2000 by and between Pathnet
                    Telecommunications, Inc. and CSX Transportation, Inc.
  10.9 (iii) ++     Right of Way Operating Agreement, dated as of March 30, 2000, by and between Pathnet
                    Telecommunications, Inc. and CSX Transportation, Inc.
  10.10 (iii)       Assignment and Acceptance Agreement, dated as of March 30, 2000, by and between Pathnet, Inc. and
                    Pathnet Telecommunications, Inc..
  10.11 (iii)       Assignment and Acceptance Agreement, dated as of March 30, 2000, by and between Pathnet, Inc. and
                    Pathnet Fiber Optics, LLC
  10.12 (iii)       License of Marks, dated as of March 30, 2000, by and between Pathnet Telecommunications, Inc. and
                    Pathnet, Inc.
  10.13 (iii)       $70 million Promissory Note by Pathnet Telecommunications, Inc. in favor of Pathnet, Inc.
  10.14 (iii)       $50 million Promissory Note by Pathnet Telecommunications, Inc. in favor of Pathnet, Inc. dated as
                    of March 30, 2000.
  27.1              Financial Data Schedule for the three months ended March 31, 2000.
  99.1              Press release dated May 9, 2000 announcing the Company's results for the first quarter of 2000.
</TABLE>

     (i)  Filed as exhibit to Pathnet  Telecommunications,  Inc.'s  Registration
          Statement on Form S-1 (Registration No. 333-91469), filed with the SEC
          on  November  22,  1999,  as  amended  by  Amendment  No.  1  to  such
          Registration Statement filed with the SEC on December 16, 1999, and as
          further  amended by  Amendment  No. 2 to such  Registration  Statement
          filed with the SEC on February  22,  2000,  and as further  amended by
          Amendment No. 3 to such  Registration  Statement filed with the SEC on
          March 10, 2000 and as further  amended by  Amendment  No.4 dated March
          13, 2000, and incorporated herein by reference.

     (ii) Incorporated  by  reference to the  corresponding  exhibit to Pathnet,
          Inc.'s Registration Statement on Form S-1 (Registration No. 333-52247)
          filed by  Pathnet,  Inc.  with the SEC on May 8,  1998,  as amended by
          Amendment No. 1 to such  Registration  Statement filed with the SEC on
          July 16,  1998,  and as  further  amended by  Amendment  No. 2 to such
          Registration  Statement  filed with the SEC on July 27,  1998,  and as
          further  amended by  Amendment  No. 3 to such  Registration  Statement
          filed with the SEC on August 10, 1998.

(iii)     Filed herewith.

 +        Constitutes management contract or compensatory arrangement.

 ++       Certain  portions of this exhibit have been omitted based on a request
          for confidential treatment filed separately with the SEC.





                                                                     EXHIBIT 4.1

                             STOCKHOLDERS' AGREEMENT

     This STOCKHOLDERS'  AGREEMENT (the "Agreement") is made as of this 30th day
of March  2000,  by and  among  PATHNET  TELECOMMUNICATIONS,  INC.,  a  Delaware
corporation (the "Company"); and the undersigned parties identified on Exhibit A
(collectively the "Stockholders").

                              W I T N E S S E T H:

     WHEREAS, the Company has entered into the following contribution agreements
(collectively,  the "Contribution Agreements"):  (i) Contribution Agreement (the
"BNSF  Contribution  Agreement")  by and among the  Company  and The  Burlington
Northern  and  Santa  Fe  Railway   Company  and  certain   affiliates   thereof
(collectively,  "BNSF");  (ii)  Contribution  Agreement  (the "CSX  Contribution
Agreement")  by and between the Company and CSX  Transportation,  Inc.  ("CSX");
(iii)  Contribution  Agreement  (the "Colonial  Contribution  Agreement") by and
between the Company and  Colonial  Pipeline  Company,  a Delaware  and  Virginia
corporation  ("Colonial");   and  (iv)  Contribution  Agreements  (the  "Pathnet
Stockholders  Contribution  Agreements")  by  and  among  the  Company  and  the
stockholders  (the  "Pathnet   Stockholders")  of  Pathnet,   Inc.,  a  Delaware
corporation  ("Pathnet").  Each of BNSF,  CSX,  Colonial and certain  individual
Pathnet Stockholders,  together with Jalkut (as defined below), is a Stockholder
under this Agreement.

     WHEREAS,  pursuant  to the  Contribution  Agreements,  the  Company and the
Stockholders  have agreed to enter into this Agreement to provide certain rights
to the  Stockholders of shares of the Company's  Series A Convertible  Preferred
Stock (the "Series A Preferred  Stock"),  Series B Convertible  Preferred  Stock
(the "Series B Preferred  Stock"),  Series C  Convertible  Preferred  Stock (the
"Series C Preferred Stock"), Series D Convertible Preferred Stock (the "Series D
Preferred  Stock")  and Series E  Convertible  Preferred  Stock  (the  "Series E
Preferred Stock" and,  collectively with the other  aforementioned  series,  the
"Series  Preferred Stock") in the amounts set forth in Exhibit A, which shall be
convertible into shares of the Company's common stock,  $.01 par value per share
(the "Common Stock") in accordance  with the terms of the Company's  Certificate
of Incorporation.

     WHEREAS, the undersigned  Stockholders wish to enter into this Agreement in
order  better to  regulate  the  conduct of the  business  of the Company and to
provide for certain voting and stock transfer arrangements both before and after
the conversion of the Series  Preferred Stock into shares of the Common Stock as
contemplated in the Certificate of Incorporation of the Company.

     NOW,  THEREFORE,  in consideration of the premises and the mutual covenants
contained in this Agreement, the parties hereto agree as follows:

SECTION 1 DEFINED TERMS

     1.1. Certain Definitions.

     For purposes of this Agreement,  the following defined terms shall have the
meanings set forth below:




<PAGE>

     "Affiliate"  of  a  party  or  other  person  (whether  a  natural  person,
corporation,  partnership, association, company, or other entity) shall mean (i)
the spouse,  child,  parent,  sibling, or other familial relation of any natural
person,  and (ii) any natural  person,  corporation,  partnership,  association,
company  or  other  entity,  in each  case  controlled  by or  operating  at the
direction  of,  under  common  control or  operating  in  conjunction  with,  or
controlling or otherwise directing, any such party or other person;

     "Board of Directors"  shall mean the Board of Directors of the Company,  as
duly elected and qualified from time to time;

     "Bylaws" shall mean the duly adopted bylaws of the company,  as such Bylaws
may be amended from time to time hereafter;

     "Certificate  of  Incorporation"  shall mean the Company's  Certificate  of
Incorporation, as such Certificate may be amended from time to time hereafter;

     "Electing Purchasers" shall mean those Eligible  Stockholders  electing, by
notice in writing to the Company  delivered within the thirty-day  notice period
set forth in Section 8.1(c)  hereof,  to purchase  additional  securities of the
Company  pursuant to the  exercise of their rights to purchase  such  additional
securities pursuant to Section 8.1 hereof;

     "Eligible  Stockholder"  shall  mean  each  and all of  such of the  Series
Preferred  Stockholders  and  the  Founder  as  shall  in each  case  and at the
applicable  date  continue to own at least fifty  percent (50%) of the number of
shares of the  Company's  voting  capital  stock  (as  adjusted  for any  split,
recombination,  stock dividend, or other  reclassification of the voting capital
stock  of the  Company,  as may be  provided  in the  Company's  Certificate  of
Incorporation)  as such person owned  immediately  following  the closing of the
initial transactions  contemplated in the Contribution  Agreements including any
shares of voting  capital  stock held by  Affiliates  of such  Series  Preferred
Stockholder;

     "Founder" shall mean David Schaeffer, an individual resident of Potomac,
Maryland;

     "Founder  Securities"  shall  mean  shares  of Common  Stock  issued to the
Founder  whether  initially or by way of a stock  dividend,  stock split,  or in
connection   with  any   combination   of  shares,   recapitalization,   merger,
consolidation or other reorganization; provided, however, that the term "Founder
Securities"  shall not include any shares of Common  Stock that have  previously
been registered with the SEC under the provisions of Article 9 or otherwise,  or
which have been sold to the public either  pursuant to a registration  statement
or SEC Rule 144, or that may be sold by the holder thereof  pursuant to SEC Rule
144(k);

     "Holder" shall mean a holder of Registrable Securities or Founder
Securities;

     "IRC" shall mean the  Internal  Revenue Code of 1986,  as amended,  and any
reference to any  particular  IRC section  shall be  interpreted  to include any
revision  of or  successor  to  that  section  regardless  of  how  numbered  or
classified;

     "Jalkut" shall mean Richard A. Jalkut, an individual resident of Bedford,
New York ;



                                       -2-

<PAGE>

     "Jalkut Employment Agreement" shall mean that certain Employment Agreement,
dated as of August 4, 1997, by and between Jalkut and Pathnet,  Inc., as amended
and assigned to the Company as of March 30, 2000;

     "Pathnet"  shall  have  the  meaning  set  forth  in the  preamble  to this
Agreement.

     "Person"  shall  mean an  individual,  a  partnership,  a  corporation,  an
association,  a joint stock company, a trust, a joint venture, an unincorporated
organization,  a limited  liability  company  and a  governmental  entity or any
department, agency or political subdivision thereof.

     "Pro Rata Share" shall mean that portion of the total number of  securities
proposed to be sold or otherwise issued by the Company  determined by a fraction
(i) the  numerator  of which is the  aggregate  number of shares of Common Stock
owned by such party  immediately prior to any proposed sale or other issuance of
securities  (assuming the full  conversion of any shares of the capital stock of
the  Company  held by such  party  that are  convertible  into  shares of Common
Stock);  and (ii) the  denominator  of which is the  total  number  of shares of
Common  Stock  owned by all such  parties  owning  Common  Stock,  assuming  the
exercise  of all  outstanding  options,  warrants,  and other  rights to acquire
Common  Stock  (or  securities  convertible  into  Common  Stock)  and the  full
conversion  of any shares of the capital stock of the Company  convertible  into
shares of Common Stock;

     "Qualified  Public  Offering"  shall mean the closing of a firm  commitment
underwritten  public offering  pursuant to an effective  registration  statement
under the  Securities  Act  covering  the offer and sale of Common  Stock to the
public (i) in which the proceeds  received by the Company,  net of  underwriting
discounts and commissions,  equal or exceed $75,000,000;  (ii) immediately prior
to the consummation of which the Company is valued (based on the per-share price
paid in such public offering,  but without regard to any proceeds to be received
by the  Company  in  connection  with such  public  offering)  at  greater  than
$600,000,000;  and  (iii) in which  the  Company  uses a  nationally  recognized
underwriter acceptable to the Board of Directors;

     "Registrable Securities" shall have the meaning ascribed to such term in
Section 9.4 hereof;

     "Required  Holders"  shall mean:  (i) prior to the first  Qualified  Public
Offering,  the holders at any time and from time to time of at least sixty-seven
percent (67%) of the Registrable Securities;  and (ii) after the first Qualified
Public  Offering,  the  holders  at any time  and from  time to time of at least
twenty percent (20%) of the Registrable Securities;

     "SEC" shall mean the United States Securities and Exchange Commission, or
any successor entity thereto;

     "Securities Act" shall mean the Securities Act of 1933, as amended, and the
rules and regulations from time to time promulgated thereunder;

     "Series A Preferred  Stockholders"  shall mean the holders of the shares of
Series A Preferred Stock;

     "Series B Preferred  Stockholders"  shall mean the holders of the shares of
Series B Preferred Stock;



                                       -3-

<PAGE>

     "Series C Preferred  Stockholders"  shall mean the holders of the shares of
Series C Preferred Stock;

     "Series D Preferred  Stockholders"  shall mean the holders of the shares of
Series D Preferred Stock;

     "Series E Preferred  Stockholders"  shall mean the holders of the shares of
Series E Preferred Stock;

     "Series Preferred  Stockholder"  shall mean the holder of any shares of any
one or more of the Series A Preferred  Stock,  the Series B Preferred Stock, the
Series C Preferred Stock, the Series D Preferred Stock or the Series E Preferred
Stock;

     "Series  Preferred  Stockholder  Director" shall mean any nominee of any of
the Series  Preferred  Stockholders  appointed in accordance with the provisions
hereof and serving from time to time as a director of the Company;

     "Shares" shall mean any shares of the capital stock of the Company;

     "Stockholder  Director"  shall  mean any of the  directors  of the  Company
appointed pursuant to the provisions of Section 5.1(b)(i) through (v) hereof;

     "Stock  Incentive Plan" shall mean the Company's 1995 Stock Incentive Plan,
in substantially the form attached as Exhibit B hereto and as contemplated to be
adopted by the Board of Directors as of the date hereof;

     "Stock  Option Plan" shall mean the  Company's  1997 Stock Option Plan,  in
substantially  the form attached as Exhibit C hereto and as  contemplated  to be
adopted by the Board of Directors as of the date hereof;

     "Subsidiary"  shall mean Pathnet and (i) any other corporation of which the
securities  having a majority of the ordinary voting power in electing the board
of directors are, at the time as of which any determination is being made, owned
by the Company  either  directly or through one or more  Subsidiaries,  (ii) any
partnership,  joint venture or similar  entity of which or in which such Person,
such Person and one or more of its Subsidiaries,  or one or more Subsidiaries of
such Person directly or indirectly own more than 50% of the capital  interest or
profits  interest,  or (iii)  any  trust,  association  or other  unincorporated
organization  of which or in which such  Person,  such Person and one or more of
its  Subsidiaries,  or one or more  Subsidiaries  of  such  Person  directly  or
indirectly own more than 50% of the beneficial interest.

     "Treasury   Regulations"  means  the  United  States  Treasury  Regulations
promulgated  under  the  IRC,  and  any  reference  to any  particular  Treasury
Regulation  section  shall be  interpreted  to  include  any final or  temporary
revision  of or  successor  to  that  section  regardless  of  how  numbered  or
classified.

     "Warrant Registration Rights Agreement" shall mean that certain Amended and
Restated Warrant  Registration Rights Agreement,  dated as of March 30, 2000, by
and among the Company  and the  Permitted  Holders  named  therein,  relating to
certain  Warrants  proposed to be issued by the Company in exchange  for certain
warrants  previously  issued by  Pathnet  pursuant  to the terms of the  Warrant
Agreement, dated April 8, 1998, by and between



                                       -4-

<PAGE>

Pathnet and certain other parties  thereto,  in connection with the placement of
certain  senior  indebtedness  of Pathnet,  all as more fully  described in such
Amended and Restated Warrant  Registration  Rights Agreement,  which Amended and
Restated Warrant  Registration  Rights Agreement shall be on terms substantially
similar to those of the Warrant  Registration  Rights Agreement,  dated April 8,
1998, by and between Pathnet and certain other parties thereto.

     1.2.  Interpretation  of Provisions.  The definitions of terms herein shall
apply  equally to the singular and plural forms of the terms  defined.  Whenever
the context may require, any pronoun shall include the corresponding  masculine,
feminine and neuter forms. The words "include", "includes" and "including" shall
be deemed to be followed  by the phrase  "without  limitation".  The word "will"
shall be  construed  to have the same  meaning  and effect as the word  "shall".
Unless the context requires  otherwise (a) any definition of or reference to any
agreement,  instrument or other document  herein shall be construed as referring
to such  agreement,  instrument or other  document as from time to time amended,
supplemented  or  otherwise  modified  (subject  to  any  restrictions  on  such
amendments,  supplements or modifications  set forth herein),  (b) any reference
herein  to any  person  (whether  natural,  corporate,  or  otherwise)  shall be
construed  to  include  such  person's  successors  and  assigns,  (c) the words
"herein",  "hereof"  and  "hereunder",  and words of  similar  import,  shall be
construed to refer to this  Agreement in its entirety and not to any  particular
provision hereof, (d) all references herein to Sections,  Exhibits and Schedules
shall be construed to refer to Sections of, and Exhibits and  Schedules to, this
Agreement  and (e) the words "asset" and  "property"  shall be construed to have
the same meaning and effect and to refer to any and all tangible and  intangible
assets and properties, including cash, securities, accounts and contract rights.

SECTION 2 REPRESENTATIONS AND WARRANTIES OF THE COMPANY

In order to induce the  Stockholders to enter into this  Agreement,  the Company
represents and warrants,  as of the date hereof,  to each of the Stockholders as
follows:

     2.1. Organization and Corporate Power.

          (a) The Company is a corporation duly organized,  validly existing and
in good standing under the laws of the State of Delaware, and is qualified to do
business as a foreign  corporation in each  jurisdiction in which the failure to
be so qualified would have a material adverse effect on its business,  financial
condition or results of operations.

          (b) The Company has all  required  corporate  power and  authority  to
carry on its  business as  presently  conducted,  to enter into and perform this
Agreement and to carry out the transactions contemplated hereby.

          (c) The Company is not in violation of any term of its  Certificate of
Incorporation  or  Bylaws,  each as  amended  to date,  or in  violation  of any
material term of any agreement,  instrument,  judgment,  decree, order, statute,
rule or government  regulation applicable to the Company or to which the Company
is a party, in each case in any manner that could reasonably be expected to have
a  material  adverse  effect on the  Company's  business,  financial  condition,
prospects, assets, liabilities or results of operations.



                                       -5-

<PAGE>

     2.2. Authorization and Non-Contravention.

          (a) This  Agreement  and all  documents  executed  pursuant  hereto or
otherwise in connection  herewith (including without limitation the Contribution
Agreements  and the  documents  and  other  agreements  executed  in  connection
therewith)  are valid and binding  obligations  of the Company,  enforceable  in
accordance with their terms,  except as such  enforcement may be limited by laws
of general  application  relating  to  bankruptcy,  reorganization,  insolvency,
moratorium or other laws affecting  creditors'  rights and the  availability  of
equitable remedies which are subject to the discretion of the court before which
an action may be brought.

          (b) The execution,  delivery and performance of this Agreement and all
agreements,  documents and instruments  executed pursuant hereto or otherwise in
connection  herewith  (including without limitation the Contribution  Agreements
and the documents and other  agreements  executed in connection  therewith) have
been duly authorized by all necessary corporate action of the Company.

          (c)  The  execution  of this  Agreement  and  the  performance  of any
transaction  contemplated hereby shall not (i) violate,  conflict with or result
in a default  under any  contract  or  obligation  to which the  Company  or any
Subsidiary  is a party or by which it or any  Subsidiary  or any of their assets
are bound, or any provision of its Certificate of Incorporation or Bylaws,  each
as amended to date,  or cause the  creation of any  encumbrance  upon any of the
assets of the Company or any  Subsidiary;  (ii) violate or result in a violation
of, or constitute a default  (whether after the giving of notice,  lapse of time
or both) under any provision of any law, regulation or rule, or any order of, or
any  restriction  imposed  by,  any court or other  governmental  agency;  (iii)
require from the Company or any Subsidiary any notice to,  declaration or filing
with, or consent or approval of any governmental authority or other third party;
or (iv)  accelerate any obligation  under or give rise to a right of termination
of,  any  material  agreement,  permit,  license or  authorization  to which the
Company or any  Subsidiary is a party or by which the Company or any  Subsidiary
is bound.

     2.3. Tax-Related Representations.

          (a) There is no plan or  intention by the Company to dispose of any of
the property contributed to the Company pursuant to the Contribution  Agreements
except that the Company may (i) transfer certain contributed property to Pathnet
or another  Subsidiary in a transaction that will qualify as a tax-free transfer
pursuant to Section 351,  and (ii) effect the  conversion  of certain  shares of
preferred stock of Pathnet into shares of common stock of Pathnet.

          (b) There is no current  plan or intention on behalf of the Company to
redeem  or  otherwise  reacquire  any  of  the  Shares  issued  pursuant  to the
transactions set forth in the Contribution Agreements.

          (c) The  Company  intends  that the  contributions  of property to the
Company in exchange for Shares pursuant to the  Contribution  Agreements will be
treated as part of a single  integrated  transaction  in which gain or loss will
not be  recognized  pursuant  to IRC Section 351 and, in the case of Persons who
contribute   Pathnet   stock  to  the  Company  in  exchange  for  Shares,   the
contributions also will qualify as a tax-free  reorganization  under IRC Section
368(a)(1)(B) pursuant to which gain or loss will not be recognized.



                                       -6-

<PAGE>

SECTION 3 REPRESENTATIONS AND WARRANTIES OF THE STOCKHOLDERS

     In order to induce  the other  Stockholders  and the  Company to enter into
this Agreement,  their respective  Contribution  Agreements (between the Company
and  such  other  Stockholders),  and the  other  documents  being  executed  in
connection herewith and therewith,  each Stockholder individually represents and
warrants,  as of the  date  hereof,  to the  Company  and to each  of the  other
Stockholders as follows:

     3.1. Organization and Corporate, Partnership and Individual Power.

          (a) Such  Stockholder is either (i) a partnership or corporation  duly
organized,  validly  existing  and  in  good  standing  under  the  laws  of its
respective  jurisdiction,   and  is  qualified  to  do  business  as  a  foreign
partnership or corporation  in each  jurisdiction  in which the failure to be so
qualified  would  have a  material  adverse  effect on its  business,  financial
condition or results of operations,  (ii) a natural person whose  individual net
worth,  or joint net worth  with such  person's  spouse,  as of the date  hereof
exceeds $1,000,000,  or (iii) a natural person who has a preexisting personal or
business  relationship with one of the directors of the Company, or by reason of
his or her  business  or  financial  experience  or the  business  or  financial
experience of his or her professional advisors who are unaffiliated with and who
are not compensated by the Company or any selling agent of the Company, directly
or indirectly,  could be reasonably  assumed to have the capacity to protect his
or her own interests in connection  with the  transactions  contemplated by this
Agreement.

          (b) Such  Stockholder,  if a  partnership  or a  corporation,  has all
required  corporate or partnership  power and authority to carry on its business
as  presently  conducted,  to enter  into and  perform  this  Agreement  and the
agreements  contemplated  hereby  to  which it is a party  and to carry  out the
transactions  contemplated  hereby  and  thereby;  provided,  however,  that  no
representation  or warranty is made herein with respect to any  agreement by any
Stockholder to contribute  any assets to the Company.  Such  Stockholder,  if an
individual,  has the capacity to enter into and perform this  Agreement  and the
agreements  contemplated  hereby  to  which he is a party  and to carry  out the
transactions contemplated hereby and thereby.

     3.2. Authorization and Non-Contravention.

          (a) This  Agreement  and all  documents  executed  pursuant  hereto or
otherwise in connection  herewith  (including  without limitation the applicable
Contribution  Agreement  and the  documents  and other  agreements  executed  in
connection  therewith) are valid and binding  obligations  of such  Stockholder,
enforceable in accordance  with their terms,  except as such  enforcement may be
limited by laws of general application  relating to bankruptcy,  reorganization,
insolvency,  moratorium  or  other  laws  affecting  creditors'  rights  and the
availability  of equitable  remedies  which are subject to the discretion of the
court before which an action may be brought.

          (b) The execution,  delivery and performance of this Agreement and all
agreements,  documents and instruments  executed pursuant hereto or otherwise in
connection  herewith  (including without limitation the respective  Contribution
Agreement  and  the  documents  and  other  agreements  executed  in  connection
therewith) have been duly authorized by all necessary corporate, partnership, or
individual  action of such  Stockholder,  and  represent  the  exercise  of such
Stockholder's  own free will and have not been executed  under any compulsion or
duress.



                                       -7-

<PAGE>

          (c)  The  execution  of this  Agreement  and  the  performance  of any
transaction contemplated hereby shall not: (i) violate,  conflict with or result
in a default  under any contract or obligation  to which such  Stockholder  is a
party or by which it or its assets are bound, or, in the case of any Stockholder
that is a  partnership  or  corporation,  any  provision  of such  Stockholder's
certificate  of  incorporation,   bylaws,   partnership   agreement,   or  other
organizational  or  voting  documents,  each as  amended  to date,  or cause the
creation  of any  encumbrance  upon any of the assets of any  Stockholder;  (ii)
violate or result in a violation of, or constitute a default  (whether after the
giving  of  notice,  lapse  of time or both)  under  any  provision  of any law,
regulation or rule normally  applicable to the transactions  contemplated hereby
(and  excluding  any  federal,  state or local  antitrust,  tax,  environmental,
health,  safety or employment laws or laws,  regulations or rules  applicable to
such Stockholder  solely as a result of its business  activities),  or any order
of, or any restriction imposed by, any court or other governmental agency; (iii)
require from such  Stockholder  any notice to,  declaration  or filing with,  or
consent or approval of any governmental  authority or other third party; or (iv)
accelerate any obligation  under or give rise to a right of termination  of, any
material agreement,  permit,  license or authorization to which such Stockholder
is a party or by which such  Stockholder is bound;  provided,  however,  that no
representation  or warranty is made herein with respect to the  contribution  to
the Company by any Stockholder of any assets.

     3.3. Tax-Related Representations.

          (a) Such  Stockholder  has no present  intention or plan,  formally or
informally,  on the date  hereof,  to  transfer  or dispose of any of the Shares
received by such Stockholder pursuant to its Contribution Agreement.

          (b) Each Stockholder intends that the contributions of property to the
Company in exchange for Shares pursuant to the  Contribution  Agreements will be
treated as part of a single  integrated  transaction  in which gain or loss will
not be recognized  and, in the case of Persons who  contribute  Pathnet stock to
the Company in exchange  for Shares,  the  contributions  also will qualify as a
tax-free reorganization under IRC Section 368(a)(1)(B) pursuant to which gain or
loss will not be recognized.

SECTION 4 COVENANTS OF THE COMPANY AND THE STOCKHOLDERS

     The  Company  hereby  covenants  with  and for the  benefit  of the  Series
Preferred  Stockholders to comply,  and, in order to induce the Series Preferred
Stockholders to enter into this Agreement,  all of the undersigned  Stockholders
shall, if required, vote their shares of the Company's capital stock in a manner
consistent  with the covenants set forth in this Section 4, until the earlier of
the date on which no shares of the Series Preferred Stock remain  outstanding or
the Company's  first Qualified  Public  Offering,  except as otherwise  provided
herein,  and until such date the Series Preferred  Stockholders  hereby agree to
comply with the covenants set forth in Section 4.10.

     4.1. Financial Statements and Budgetary Information.

          (a) The Company shall deliver to the Stockholders  internally prepared
unaudited   quarterly   financial   statements  and  audited  annual   financial
statements,  as well as annual budgetary  information.  The quarterly  financial
information and reports shall be provided to the Stockholders  within forty-five
(45) days after the end of each fiscal  quarter of the  Company's  fiscal  year.
Annual  financial  statements  audited by a Big Five accounting firm selected by
the Board of Directors shall



                                       -8-

<PAGE>

be provided to the  Stockholders  within  ninety (90) days after the end of each
fiscal year of the Company.

          (b) The annual  budgetary  information  for each upcoming  fiscal year
shall be presented at the Board of Directors'  meeting at least 60 days prior to
each  fiscal  year-end  of the  Company  and shall be subject to approval by the
Board of Directors.  Such budgetary  information  shall include a budget for the
upcoming  fiscal year and the  succeeding two years  describing in detail,  at a
minimum,  assumptions  with  respect to  revenues,  key  operating  expenses and
capital expenditures and financing.  Any material deviations from the budget for
any fiscal year shall be subject to prior approval by the Board of Directors.

          (c) The Company shall deliver to the Stockholders  such other periodic
information  as it may  provide  to holders of the  Company's  outstanding  debt
obligations.

     4.2. Indemnification and Insurance.

     For so  long  as any  of  the  shares  of  Series  Preferred  Stock  remain
outstanding,  the Certificate of  Incorporation  shall at all times during which
any Series Preferred  Stockholder  Director serves as a director of the Company,
provide for indemnification of the directors and limitations on the liability of
the directors to the fullest extent  permitted under  applicable state law. Upon
the reasonable request of any Series Preferred Stockholder Director,  and in any
event prior to the effective date of a public  offering by the Company of equity
securities  registered pursuant to the Securities Act, the Company shall use its
best efforts to obtain and maintain on reasonable  business terms  directors and
officers  liability  insurance  coverage at a level reasonably  suitable for the
Company but in no event less than $1,000,000 per occurrence,  including coverage
of knowing  violations  under federal and state  securities laws, which coverage
shall apply to, but not be limited to, the Company's initial public offering.

     4.3. Restrictions on other Agreements.

     The  Company  shall  not enter  into any  agreement  with any  party  which
eliminates,  amends or  restricts  the  rights  and  preferences  of the  Series
Preferred  Stock as set forth in the Certificate of  Incorporation  or otherwise
take any other action that adversely  affects the rights of the Series Preferred
Stockholders or any class of Series Preferred Stock.

     4.4. Stock Options.

          (a) Except as set forth on Schedule  4.4, the Company  shall not issue
stock, grant stock options,  warrants,  or other rights to purchase stock in the
Company, except pursuant to and in accordance with the terms of the Stock Option
Plan and the Stock Incentive  Plan.  Unless  otherwise  approved by the Board of
Directors,  the  Company  shall not issue or grant any of such  securities  with
respect to the purchase of more than 5.5 million shares of Common Stock,  or any
shares of Preferred Stock,  under the Stock Option Plan and Stock Incentive Plan
(including  options issued in exchange for options for shares of Common Stock of
Pathnet which are issued and outstanding as of the date hereof,  and as adjusted
for stock splits, stock dividends, reclassification and similar events).

          (b)  Notwithstanding  any of the foregoing clause 4.4(a),  the Company
shall be  permitted  to grant stock  options  (and issue  Common  Stock upon the
exercise  thereof)  of the Company to the  individuals  and  entities  listed on
Schedule 4.4 in the amounts and under the terms



                                       -9-

<PAGE>

and  conditions set forth  opposite such  individual or entity.  Pursuant to the
terms of the Stock Option Plan and the Stock Incentive Plan, qualified incentive
stock options and  nonqualified  options may be granted to employees,  officers,
directors and consultants of the Company  pursuant to and in accordance with the
terms of this  Agreement  and the terms of the Stock  Option  Plan and the Stock
Incentive Plan as adopted as of the date hereof, and the exercise of any options
shall be  conditioned  on the optionee  making  satisfactory  provisions for the
payment of any  withholding  taxes due on such exercise and agreeing to be bound
by the  provisions  of Section 5 and Section 7 hereof.  Neither the Stock Option
Plan nor the Stock  Incentive  Plan may be amended,  revised or waived after the
date  hereof  without  the  consent  of  a  majority  of  the  Series  Preferred
Stockholder Directors.

          (c)  Notwithstanding  anything  set forth in this  Section  4.4 to the
contrary,   management  may  change  the   composition  and   compensation   and
remuneration  of existing  management,  consultants and employees of the Company
and may hire new management,  consultants and employees of the Company, provided
the  compensation  and  remuneration  of  such  new  and  existing   management,
consultants and employees  (including any capital stock of the Company issued to
such new existing management, consultants or employees and any vesting schedules
relating  to the  grant  of  any  such  capital  stock)  is  within  the  ranges
established  from time to time by the Board of Directors  with the approval of a
majority of the Series Preferred Stockholder Directors. Pursuant to the terms of
the Stock Option Plan and the Stock  Incentive Plan, all awards under such plans
must be  administered  by a "Committee"  whose members must be designated by the
Board of Directors.

          (d) The Company shall cause Pathnet not to issue or grant any options,
warrants,  or other  rights  to  purchase,  or  securities  convertible  into or
exchangeable  for,  shares of the capital stock of Pathnet;  provided,  however,
that  the  foregoing  covenant  shall  not  apply  to the  existing  rights  and
obligations of Pathnet under options, warrants,  purchaser rights or convertible
securities that are issued and outstanding on the date hereof.

     4.5. Conduct of Business.

          (a) The Company shall engage principally in the business of acquiring,
constructing,  developing  and/or operating  telecommunications  networks in the
United  States or a  business  or  businesses  similar or  otherwise  related or
incidental thereto or reasonably compatible therewith. The Company shall keep in
full force and effect its  corporate  existence  and all  intellectual  property
rights  useful in its  business and shall use its best efforts to cause (i) each
existing and new employee to execute a Non-Disclosure  Agreement in such form as
may from  time to time be  approved  by the  Board of  Directors,  (ii) each new
engineer and information technology professional to execute a Non-Disclosure and
Assignment  of  Inventions  Agreement  in such  form as may from time to time be
approved  by the Board of  Directors,  and (iii)  each new  employee  holding an
office of vice  president or higher of the Company to execute a  Non-Disclosure,
Assignment of Inventions and Non-Competition  Agreement in such form as may from
time to time be approved by the Board of Directors.

          (b) The Company shall  maintain all  properties  used or useful in the
conduct of its business in good repair,  working order and  condition,  ordinary
wear and tear excepted,  as necessary to permit such business to be properly and
advantageously conducted.



                                      -10-

<PAGE>

     4.6. Payment of Taxes, Compliance with Laws, etc.

     The Company  shall pay and  discharge  all lawful  taxes,  assessments  and
governmental charges or levies imposed upon it or upon its income,  franchise or
property  before the same shall become in default,  as well as all lawful claims
for labor,  materials  and supplies  which if not paid when due,  might become a
lien or charge upon its property or any part thereof;  provided,  however,  that
the Company shall not be required to pay and discharge any such tax, assessment,
charge,  levy or claim so long as the validity thereof is being contested by the
Company  in good  faith  by  appropriate  proceedings  and an  adequate  reserve
therefor has been  established  on its books.  The Company shall comply with all
applicable  laws and  regulations  in the  conduct of its  business,  including,
without  limitation,  all  applicable  federal  and  state  securities  laws  in
connection with the issuance of any securities.

     4.7. Material Events.

     The  Company  will  continuously  monitor  and  promptly  advise the Series
Preferred Stockholders and the Founder in writing of any event that, in the good
faith  judgment of the  Company,  represents  a material  adverse  change in the
condition,  financial or otherwise, or business of the Company, and of each suit
or proceeding  commenced or threatened  against the Company which,  if adversely
determined,  in the good faith  judgment of the  Company,  could have a material
adverse effect on the Company or its financial condition, business or prospects.

     4.8. Management and Compensation.

     The Board of Directors may establish a Compensation  Committee,  consisting
of such  members as the Board  shall  determine.  Subject to the  provisions  of
applicable  law,  the Board of Directors  may delegate to any such  Compensation
Committee all or any part of the  authority of the Board of Directors  regarding
the employment and compensation of all officers and employees of the Company.

     4.9. Inspection.

     The Company shall,  upon reasonable prior notice to the Company and so long
as  not  unduly  disruptive  to  the  Company's   business,   permit  authorized
representatives  of the  holders  of the  Series  Preferred  Stock to visit  and
inspect any of the  properties  of the Company,  including its books or accounts
(and to make copies  thereof and take  extracts  therefrom),  and to discuss its
affairs,  finances and accounts with its officers,  administrative employees and
independent  accountants,  all at such  reasonable  times and as often as may be
requested.

     4.10. Tax Free Transfers.

          (a) The  Company  and the  Stockholders  will  prepare  and file their
Federal  and  state  income  tax  returns  in a manner  that  characterizes  the
contributions  set forth in the Contribution  Agreements in the manner described
in Sections 2.3(c) and 3.3(b) of this Agreement; provided, however, that neither
the  representations  in Section  2.3(c) nor the  covenants in this Section 4.10
shall apply to any  transfers  of property or the  provision  of services to any
Stockholder subsequent to the date of this Agreement.



                                      -11-

<PAGE>

          (b)  The  Stockholders  agree  to file  the  information  required  by
Treasury  Regulation  Section  1.351-3 for their  respective  Federal income tax
returns  for the taxable  year of the  contribution,  and the Company  agrees to
furnish to the Stockholders  information necessary to enable the Stockholders to
comply  with the  information  reporting  requirements  of  Treasury  Regulation
Section 1.351-3.

          (c) The Company will exercise  reasonable  care not to take any action
subsequent  to the date hereof that will cause the  transfers of property to the
Company in exchange for Shares as set forth in the  Contribution  Agreements not
to qualify as tax-free  transfers pursuant to IRC Sections 351 and 368(a)(1)(B),
as applicable.

          (d) Notwithstanding  the introductory  sentence of this Section 4, the
covenants  of the  Stockholders  and the Company  pursuant to this  Section 4.10
shall survive the closing of the Company's first  Qualified  Public Offering and
the conversion of the Series  Preferred Stock and shall remain in full force and
effect for a period of 20 years from the date hereof.

SECTION 5 BOARD OF DIRECTORS

     5.1. Appointments to the Board of Directors Prior to a Qualified Public
Offering.

     Until the  earlier of the date on which no shares of the  Series  Preferred
Stock remain  outstanding or the Company's first Qualified Public Offering,  the
Company  shall  comply,  and the  Stockholders  shall vote  their  shares of the
Company's  capital stock in compliance  with, and to cause the Company to comply
with, the covenants set forth in this Section 5.1:

          (a) Size of Board of Directors. The Company and the Stockholders shall
fix the number of members of the Board of Directors at ten (10) directors.

          (b) Composition of Board of Directors

               (i) Series A Preferred Stockholder Directors.  The holders of the
          Series  A  Preferred  Stock  shall  be  entitled  to  vote  as a class
          separately  from all other classes of stock of the Company in any vote
          for the election of directors of the Company, and shall be entitled to
          elect by such  class vote two  directors  (the  "Series A  Stockholder
          Directors"),  one of which  Series A  Stockholder  Directors  shall be
          designated by Spectrum Equity Investors, L.P. ("Spectrum") for so long
          as it owns shares of Series A Preferred  Stock and  thereafter  by the
          holders of a majority of the issued and outstanding shares of Series A
          Preferred  Stock,  and the other of which shall be  designated  by New
          Enterprise  Associates  VI,  Limited  Partnership  or  its  affiliates
          (collectively,  "NEA  VI") for so long as it owns  shares  of Series A
          Preferred  Stock and  thereafter  by the  holders of a majority of the
          issued and outstanding shares of Series A Preferred Stock.

               (ii) Series B Preferred Stockholder Director.  The holders of the
          Series  B  Preferred  Stock  shall  be  entitled  to  vote  as a class
          separately  from all other classes of stock of the Company in any vote
          for the election of directors of the Company, and shall be entitled to
          elect by such  class  vote one  director  (the  "Series B  Stockholder
          Director"),  which shall be  designated  by Grotech  Partners IV, L.P.
          ("Grotech IV") for



                                      -12-

<PAGE>

          so long as it owns shares of Series B Preferred  Stock, and thereafter
          by the holders of a majority of the issued and  outstanding  shares of
          Series B Preferred Stock.

               (iii) Series C Preferred Stockholder Director. The holders of the
          Series  C  Preferred  Stock  shall  be  entitled  to  vote  as a class
          separately  from all other classes of stock of the Company in any vote
          for the  election of directors of the Company and shall be entitled to
          elect by such  class  vote one  director  (the  "Series C  Stockholder
          Director") to be designated by the holders of a majority of the issued
          and outstanding shares of Series C Preferred Stock, provided, however,
          that if the holders of a majority of the issued and outstanding shares
          of Series C Preferred  Stock  designate  for  election as the Series C
          Stockholder  Director an individual  who is not a partner or associate
          of a Series C Stockholder  or an entity under  substantially  the same
          management as a Series C  Stockholder,  such designee shall be elected
          as a  director  only  with  the  vote of a  majority  of the  Series A
          Stockholder  Directors and the Series B Stockholder  Director,  voting
          together.  Initially,  the  Series  C  Stockholder  Director  shall be
          designated  by Toronto  Dominion  Capital  (U.S.A.),  Inc. In no event
          shall the Series C Stockholder Director be: (A) a partner or associate
          of Spectrum or an entity under  substantially  the same  management as
          Spectrum  for so long as Spectrum  has  designation  rights under this
          Section  5.1(b);  (B) a partner  or  associate  of NEA VI or an entity
          under  substantially  the same management as NEA VI for so long as NEA
          VI has designation  rights under this Section 5.1(b); or (C) a partner
          or associate of Grotech IV or an entity under  substantially  the same
          management  as Grotech  IV for so long as  Grotech IV has  designation
          rights under this Section 5.1(b).

               (iv) Series D/E Stockholder Directors.  The holders of the Series
          D Preferred Stock and Series E Preferred  Stock,  voting together as a
          single class, shall be entitled to vote as a class separately from all
          other  classes of stock of the Company in any vote for the election of
          directors of the Company, and shall be entitled to elect by such class
          vote three  directors (the "Series D/E  Stockholder  Directors").  The
          Series D/E Stockholder Directors shall be designated as follows:

               (A)  one Series D/E  Stockholder  Director shall be designated by
                    CSX for so long as it owns  shares  of  Series  D  Preferred
                    Stock,  and thereafter shall be designated by the holders of
                    a majority of the issued and outstanding  shares of Series D
                    Preferred  Stock  and  Series  E  Preferred  Stock,   voting
                    together as a single class;

               (B)  one Series D/E  Stockholder  Director shall be designated by
                    BNSF for so long as it owns  shares  of  Series D  Preferred
                    Stock,  and thereafter shall be designated by the holders of
                    a majority of the issued and outstanding  shares of Series D
                    Preferred  Stock  and  Series  E  Preferred  Stock,   voting
                    together as a single class; and

               (C)  one Series D/E  Stockholder  Director shall be designated by
                    Colonial for so long as it owns shares of Series E Preferred
                    Stock or Series D Preferred  Stock,  and thereafter shall be
                    designated  by the  holders of a majority  of the issued and
                    outstanding  shares of Series D Preferred Stock and Series E
                    Preferred Stock, voting together as a single class.



                                      -13-

<PAGE>

               (v) Independent  Director.  The holders of all classes of Shares,
          voting as a single class, shall elect one independent  director who is
          not an officer or employee of the Company or any  Subsidiary and not a
          holder or an  Affiliate of any holder of Shares of any class as of the
          date of such election.

               (vi) Chief  Executive  Officer.  The  holders  of all  classes of
          Shares,  voting as a single  class,  shall  elect the Chief  Executive
          Officer (and any replacement or successor Chief Executive  Officer) as
          a director.

     5.2. Appointments to the Board of Directors Following a Qualified Public
Offering.

     Following  the  earlier  of the  date on  which  no  shares  of the  Series
Preferred  Stock remain  outstanding  or the Company's  first  Qualified  Public
Offering,  the  Stockholders  shall,  for so  long  as they  own  shares  of the
Company's  voting  capital  stock,  vote their  shares of the  Company's  voting
capital  stock in  compliance  with the covenants set forth in this Section 5.2;
provided,  however,  that the terms of this  Section  5.2 shall not apply to any
transferee of the shares owned by such Stockholders if such transferee is not an
Affiliate of such Stockholder:

          (a)  Representative  of  BNSF.  For  so  long  as  BNSF  shall  be the
beneficial  owner of not less than five percent (5%) of the  outstanding  voting
capital  stock of the Company,  the  Stockholders  shall cast their votes as the
holders  of shares  of the  voting  capital  stock of the  Company  to cause the
designee of BNSF to be elected as a director of the Company.

          (b)  Representative of CSX. For so long as CSX shall be the beneficial
owner of not less than five percent (5%) of the outstanding voting capital stock
of the Company, the Stockholders shall cast their votes as the holders of shares
of the voting  capital  stock of the Company to cause the  designee of CSX to be
elected as a director of the Company

          (c)  Representative of Colonial.  For so long as Colonial shall be the
beneficial  owner of not less than five percent (5%) of the  outstanding  voting
capital  stock of the Company,  the  Stockholders  shall cast their votes as the
holders  of shares  of the  voting  capital  stock of the  Company  to cause the
designee of Colonial to be elected as a director of the Company.

     5.3. Other Covenants Concerning Officers and Directors.

     For so long as a Stockholder  is bound by the provisions of Sections 5.1 or
5.2 hereof,  such Stockholder  shall vote their shares of the Company's  capital
stock in  compliance  with and to cause the Company to comply with the following
covenants:

          (a) Selection of Chief  Executive  Officer.  The first Chief Executive
Officer of the Company shall be Jalkut. Upon the termination, resignation, death
or disability of the Chief Executive  Officer of the Company,  the Company shall
select and hire a successor Chief Executive Officer (and any successor  thereto)
by the affirmative vote of a majority of the Board of Directors.

          (b)  Meetings  of  Board  of  Directors.  A  meeting  of the  Board of
Directors  shall be held at least four times each  calendar year at intervals of
not more than three months.

          (c) Removal of Directors. Each of the Stockholder Directors shall be
nominated, elected and continued as a director of the Company as provided in
Section 5.1 or Section 5.2, as



                                      -14-

<PAGE>

applicable,  and shall not be removed  for any reason  other than in  connection
with the designation and election of a successor  Series A Stockholder  Director
by the Series A Stockholders,  a successor Series B Stockholder  Director by the
Series B Stockholders, a successor Series C Stockholder Director by the Series C
Stockholders,  or a successor  Series D/E  Stockholder  Director by the Series D
Stockholders and Series E Stockholders,  as applicable, in each case as provided
in Section 5.1(b) hereof or 5.2 hereof, as applicable. All Stockholders agree to
vote for the removal of a Stockholder  Director,  if required,  by the person or
persons entitled to designate such Stockholder Director, and for the election to
the Board of  Directors  of a  substitute  designated  by the  person or persons
entitled to designate such  replacement  director under this Section 5.3(c),  if
requested  by the person or  persons  entitled  to  designate  such  replacement
director.

     5.4. Other Matters. For so long as a Stockholder is bound by the provisions
of Section 5.1, 5.2 or 5.3, such Stockholder shall vote all of his or its shares
of the Company and shall take all other  necessary or desirable  actions  within
his or its  control  in  its  capacity  as a  stockholder,  (including,  without
limitation,  attendance  at  meetings  in  person or by proxy  for  purposes  of
obtaining  a quorum,  execution  of written  consents  in lieu of  meetings  and
placing into nomination the names of the board designees permitted hereunder) to
satisfy its  obligations  pursuant to this Section 5, and the Company shall take
all  necessary  or  desirable  actions  within its control  (including,  without
limitation,  calling  special  board and  stockholder  meetings and placing into
nomination the names of the board designees  permitted  hereunder) to enable and
facilitate the satisfaction by the stockholders of their obligations pursuant to
this  Section  5 and the  election  of  members  of the  board of  directors  as
described herein.

SECTION 6 NEGATIVE COVENANTS OF THE COMPANY

     So long as not less  than  25% of the  shares  of  Series  Preferred  Stock
outstanding  immediately  after the closing of the transactions  contemplated in
the Contribution Agreements (as such number may be adjusted for any stock split,
reverse  stock  split,   recombination,   reclassification,   or  other  similar
transaction)  remain  outstanding,  the Company  shall comply with the following
covenants, except as (i) in the case of Sections 6.1 through 6.5, the holders of
more than two-thirds of the  then-outstanding  shares of Series Preferred Stock,
voting together as a single class, may otherwise  consent,  and (ii) in the case
of Section 6.6, as provided therein:

     6.1. Mergers, Dispositions, Acquisitions and Other Actions.

     The Company shall not: (a) sell, lease or otherwise  dispose of (whether in
one transaction or in a series of related transactions) all or substantially all
of its assets;  (b) merge with or into or consolidate  with another entity;  (c)
acquire  any other  corporation  or  business  concern for more than $5 million,
whether by  acquisition  of assets,  capital stock or otherwise,  and whether in
consideration of the payment of cash, the issuance of capital stock or otherwise
whether in one or a series of  installments  or make any loans to or investments
in any other entities or persons (other than cash  equivalents)  of more than $5
million  in  any  one or a  series  of  related  transactions;  (d)  voluntarily
liquidate or wind up its  operations;  (e) issue any shares of its capital stock
which are  senior to or on a parity  with any shares of Series  Preferred  Stock
with respect to dividends,  liquidation,  redemptions or otherwise,  or with any
special voting rights; (f) incur, create,  assume or become liable in any manner
(by way of guarantee,  surety, or otherwise) any new or additional  indebtedness
for borrowed money,  whether by the issue of notes,  other debt  securities,  or
otherwise, except that the Company may so incur, create, assume or become liable
for: (A) indebtedness (and any refinancing  thereof) existing within the Company
or its Subsidiaries upon the completion of the transactions contemplated



                                      -15-

<PAGE>

in the Contribution Agreements;  or (B) any indebtedness the principal amount of
which so incurred,  created,  assumed by, or otherwise  becoming a liability of,
the Company in any one transaction or series of related transaction is less than
or equal to $5 million; or (C) indebtedness incurred, created, or assumed by the
Company in the ordinary course of its business.

     6.2. No Amendments to Certificate of Incorporation or Bylaws.

     The  Company   shall  not  make  any  amendment  to  its   Certificate   of
Incorporation or Bylaws.

     6.3. Restrictions on Other Agreements.

     The Company shall not enter into any agreement  with any party which by its
terms  (a)  restricts  the  payments  due the  holders  of the  shares of Series
Preferred  Stock,  or (b) except as  contemplated  by Section 10.11,  grants any
right  relating  to the  registration  of its Common  Stock  superior to or on a
parity with the rights granted to the Stockholders pursuant to Section 9 hereof.

     6.4. Affiliated Transactions.

     The Company shall not enter into or amend any  transactions,  agreements or
arrangements  with,  or make any  payments  to,  any  director,  officer  or key
employee of the Company or any person or entities which or who are relatives of,
controlled  by, or otherwise  affiliated  with any of the  foregoing  persons or
entities (an  "Affiliate")  other than in the ordinary course of business and on
terms no less  favorable to the Company than those that would be available  from
unaffiliated third parties.

     6.5. Issuances of, Distributions on, and Redemptions of, Capital Stock.

     Except  as  otherwise  expressly  provided  in  this  Agreement  and in the
Certificate  of  Incorporation,  the Company  shall not  authorize or issue,  or
obligate itself to issue, any additional  shares of capital stock of the Company
of any class,  declare or pay any dividends,  or make any distributions of cash,
property or  securities  of the Company with respect to any shares of its Common
Stock or any other class of its capital stock, or directly or indirectly  redeem
purchase, or otherwise acquire for consideration, any shares of its Common Stock
or  any  other  class  of  its  capital  stock;  provided,  however,  that  this
restriction  shall not apply to (x) the repurchase of shares of the Common Stock
from individuals and entities who have entered into stockholder  agreements when
the Company has the option to  repurchase  such  shares upon the  occurrence  of
certain  events,   including  the  termination  of  employment  and  involuntary
transfers by operation of law (and their permitted  transferees),  provided that
the aggregate amount of repurchase thereunder shall not exceed $250,000 plus the
cash  proceeds  from the issuance of any stock to employees of the Company other
than  pursuant  to the  Stock  Option  Plan or the Stock  Incentive  Plan or (y)
transactions  contemplated by the Jalkut Employment  Agreement.  Any redemption,
repurchase  or other  acquisition  by the  Company of any shares of its  capital
stock shall be made in  compliance  with all laws,  including but not limited to
federal and state securities laws.

     Notwithstanding  the  foregoing,  the  Company  shall have the right to (i)
enter into and perform the Colonial Option Agreement,  including the issuance of
Series E Preferred Stock and Common Stock  thereunder,  and (ii) issue shares of
the Series D Preferred Stock of the Company in exchange for the  contribution of
right-of-way rights on terms acceptable to the Board of Directors of the Company
and add any such  purchaser  as a  "Stockholder"  hereunder as  contemplated  by
Section



                                      -16-

<PAGE>

10.11 below,  in each case without the consent of the holders of  two-thirds  of
the shares of Series  Preferred Stock as contemplated  above,  provided,  in the
case of clause (ii)  above,  that such  issuance of Series D Preferred  Stock in
excess of the amount  currently  authorized  does not  materially  prejudice the
rights of the existing holders of the Series D Preferred Stock of the Company.

     6.6.  Adverse Change in Terms or Rights of a Series of Preferred Stock. The
Company shall not modify the terms of any Series of Preferred Stock as set forth
in the Certificate of Incorporation  of the Company without,  in addition to any
other consent required,  the consent of the holders of a majority of such Series
of Preferred Stock. The Company shall not amend the Certificate of Incorporation
or Bylaws in a manner that  materially  and adversely  affects the rights of any
Series of  Preferred  Stock,  relative  to the  rights  of any  other  Series of
Preferred Stock, without, in addition to any other consent required, the consent
of the  holders of a majority of such  adversely  affected  Series of  Preferred
Stock.  Any  increase  in the  authorized  number  of any class of shares of the
Company  shall not be deemed to be adverse to any Series of  Preferred  Stock by
reason of the effects of differing levels of protection  against dilution as set
forth in the Certificate of Incorporation.

SECTION 7 TRANSFER BY FOUNDER; RIGHTS TO PURCHASE

The following  provisions of this Section 7 shall  terminate  upon the Company's
first Qualified Public Offering:

     7.1. General Restrictions on Transfer by the Founder.

          (a) The Founder agrees that he will not directly or indirectly  offer,
transfer, donate, sell, assign, pledge, hypothecate or otherwise dispose of (any
such action a "Transfer"),  all or any portion of the shares of capital stock of
the Company now owned or hereafter  acquired by him, except in connection  with,
and  strictly  in  compliance  with,  the  conditions  of any  of the  following
(hereinafter "Permitted Transfers"):

               (i)  Transfers  effected  pursuant to Section 7.2 and Section 7.3
     hereof,  in each  case made in  accordance  with the  procedures  set forth
     therein;

               (ii)  Transfers  by the Founder to his spouse or children or to a
     trust of which he is the settlor or a trustee for the benefit of his spouse
     or  children,   provided  that  such  trust  does  not  require  or  permit
     distribution  of  such  shares  during  the  term of  this  Agreement,  and
     provided,   further,  that  the  transferee  shall  have  entered  into  an
     enforceable written agreement satisfactory to the Company and a majority of
     the Series  Preferred  Stockholders  (voting  together  as a single  class)
     providing  that all shares so  Transferred  shall continue to be subject to
     all  provisions of this  Agreement as if such shares were still held by the
     Founder; and

               (iii) Transfers upon the Founder's death to his heirs,  executors
     or  administrators  or to a trust under his will or  Transfers  between the
     Founder and his guardian or conservator, provided that the transferee shall
     have entered into an  enforceable  written  agreement  satisfactory  to the
     Company and the Series Preferred Stockholders,  voting together as a single
     class,  providing  that all  shares so  Transferred  shall  continue  to be
     subject to all  provisions  of this  Agreement as if such shares were still
     held by the Founder; and



                                      -17-

<PAGE>

               (iv) Transfers constituting a bona fide pledge,  hypothecation or
     other granting of a security interest in the Founder Securities to secure a
     loan for borrowed money, provided that:

               (A) the  financial  institution  making  such loan shall have net
               assets in excess of $100 million;

               (B)  neither  the purpose nor the effect of such loan shall be to
               establish,  support,  or  facilitate  any short  position  in the
               Company's securities;

               (C)   the   documentation   and   structure   of   such   pledge,
               hypothecation,  or other granting of a security  interest and the
               underlying  loan  documentation  shall  have  been  reviewed  for
               compliance  with the  terms of this  Agreement  by,  and shall be
               reasonably satisfactory to, outside counsel to the Company; and

               (D) no such  Transfer  under this clause (iv) shall be  permitted
               during any period in which the Founder  Securities  are otherwise
               subject to the  provisions  of  Section  9.8  hereof,  other than
               pursuant to a bona fide pledge,  hypothecation  or other security
               interest  outstanding in accordance with the terms of this clause
               (iv) on the date that the market stand-off agreement restrictions
               imposed by Section 9.8 become effective.

          (b)  Anything  to the  contrary  in  this  Agreement  notwithstanding,
transferees of the Founder permitted by clauses (ii) and (iii) of Section 7.1(a)
shall take any shares so Transferred subject to all provisions of this Agreement
as if such shares were still held by the  Founder,  whether or not they so agree
with the Founder.

     7.2. Right of Refusal.

     If at any time on or after the Closing Date, the Founder (including for all
purposes of this Section 7.2, any permitted transferee of his shares pursuant to
Section  7.1(a)(ii)  or  Section  7.1(a)(iii))  receives  a bona  fide  offer to
purchase any or all of his shares (the "Offer") from an unaffiliated third party
(the  "Offeror")  which the Founder wishes to accept  (whether  initiated by the
Founder or the third party),  the Founder may transfer  such shares  pursuant to
and in accordance with the following provisions of this Section 7.2:

          (a) The  Founder  shall  cause the Offer to be reduced to writing  and
shall  notify  the  Series  Preferred  Stockholders  in writing of his desire to
accept the Offer and  otherwise  comply with the  provisions of this Section 7.2
and Section 7.3. The Founder's notice shall  constitute an irrevocable  offer to
sell such shares to the Series Preferred  Stockholders at a purchase price equal
to the price  contained in, and on the same terms and  conditions of, the Offer.
The  notice  shall be  accompanied  by a true  copy of the  Offer  (which  shall
indemnify the Offeree).

          (b) At any time  within  thirty (30) days after the date of the giving
of notice pursuant to Section 7.2(a) (the "Notice  Period"),  one or more of the
Series Preferred Stockholders may, subject to the terms hereof, choose to accept
the Offer with  respect to all or a portion  of the  shares  covered  thereby by
giving written notice to the Founder to such effect; provided,  however, that if
two or more Series Preferred  Stockholders  choose, in the aggregate,  to accept
such Offer with  respect to an  aggregate  number of shares  which  exceeds  the
number of shares subject to such Offer



                                      -18-

<PAGE>

and  available  for  purchase by the Series  Preferred  Stockholders  taken as a
whole,  the  number of shares for which the Offer may be  accepted  by each such
Series  Preferred  Stockholder  shall,  in each case, be reduced by the smallest
number of shares as shall be necessary to reduce the aggregate  number of shares
for which the Offer may be  accepted  by the Series  Preferred  Stockholders  as
contemplated  herein to the  number  of shares  for which the Offer was made and
which are available for purchase by them; provided,  further, that the number of
shares  for which any Series  Preferred  Stockholder  may  accept  such Offer as
contemplated  herein  shall in no event be  reduced  to less than the  number of
shares which bears the same  proportion  to the total number of shares for which
the Offer was made and which are available for purchase by the Series  Preferred
Stockholders  as the number of shares of capital  stock of the Company (or other
securities  convertible  into shares of capital  stock of the Company) (any such
shares being referred to hereinafter as  "Securities")  then held by such Series
Preferred  Stockholder  bears to the total number of Securities then held by all
Series Preferred Stockholders accepting such Offer; and provided,  further, that
the Series Preferred  Stockholders who elect to purchase shares may purchase any
shares which other Series Preferred  Stockholders do not elect to purchase based
on the relative holdings of such electing Series Preferred Stockholders.

          (c) If shares  covered by any Offer are purchased  pursuant to Section
7.2(b),  such purchase  shall be (i) at the same price and on the same terms and
conditions  as the  Offer if the Offer is for cash  and/or  notes or (ii) if the
Offer  includes  any  consideration  other  than  cash  and  notes,  then at the
equivalent  all cash price for such other  consideration  as  determined  by the
Board of  Directors.  The closing of the  purchase  of the shares  subject to an
Offer  pursuant to this  Section 7.2 shall take place  within  fifteen (15) days
after  the  expiration  of  the  Notice  Period,  or  upon  satisfaction  of any
governmental  approval  requirements,  if later,  by delivery by the  respective
Series  Preferred  Stockholders  of the  purchase  price  for the  shares  being
purchased as provided above to the Founder against  delivery of the certificates
representing the shares so purchased  appropriately endorsed for transfer by the
Founder.

     7.3. Sales by the Founder.

     Any shares  covered by an Offer which are not acquired  pursuant to Section
7.2 that the Founder  desires to sell following  compliance with Section 7.2 may
be sold to the Offeror only during the 90-day period after the expiration of the
Notice  Period and only on terms no more  favorable  to the  Founder  than those
contained in the Offer.  Promptly  after such sale, the Founder shall notify the
Series Preferred Stockholders of the consummation thereof and shall furnish such
evidence of the  completion and time of completion of such sale and of the terms
thereof as may reasonably be requested by the Series Preferred Stockholders.  So
long as the Offeror is neither a party,  nor an affiliate or relative of a party
to this  Agreement,  such Offeror shall take the shares so Transferred  free and
clear of the  provisions  of this  Agreement,  other  than  Section  5.1 and 5.3
hereof.  If, at the end of such 90-day period, the Founder has not completed the
sale of such shares as aforesaid,  all the restrictions on Transfer contained in
this Agreement shall again be in effect with respect to such shares.

SECTION 8 RIGHTS TO PURCHASE

     Notwithstanding  anything herein to the contrary,  the following provisions
of this Section 8 shall not apply to, and shall thereafter terminate immediately
upon, the Company's first Qualified Public Offering.



                                      -19-

<PAGE>

     8.1  Right to Participate in Certain Sales of Additional Securities.

          (a) The  Company  agrees that it shall not sell or issue any shares of
capital  stock  of  the  Company,  or  other  securities   convertible  into  or
exchangeable  for capital stock of the Company,  or options,  warrants or rights
carrying any rights to purchase  capital stock of the Company unless the Company
first  submits a written  offer to each Eligible  Stockholder,  identifying  the
terms of the proposed sale (including cash price,  number or aggregate principal
amount of securities and all other material terms).

          (b) Pursuant to such notice,  the Company shall offer to each Eligible
Stockholder  the  opportunity  to purchase its Pro Rata Share of the  securities
proposed to be sold by the Company on terms and conditions, including price, not
less  favorable  to the  Eligible  Stockholders  than those on which the Company
proposes to sell such  securities to a third party.  Each  Eligible  Stockholder
shall have a right of over-allotment such that if any Eligible Stockholder fails
to exercise its right  hereunder  to purchase  its Pro Rata Share,  the Electing
Purchasers may purchase the non-purchasing Eligible Stockholder's Pro Rata Share
(allocated  among them, pro rata in proportion to the aggregate number of shares
of Common Stock owned by such Electing Purchasers  (assuming the full conversion
of any shares of the  capital  stock of the Company  convertible  into shares of
Common Stock)).

          (c) The Company's offer to the Eligible Stockholders shall remain open
and  irrevocable,  for a period of thirty (30) days.  Any  securities so offered
which are not  purchased  pursuant to such offer may be sold by the Company,  at
any time within one hundred twenty (120) days  following the  termination of the
above-referenced 30-day period, but such securities may not be sold on terms and
conditions, including price, that are more favorable to the purchaser than those
set forth in such offer.  No  securities  may be sold by the Company  after such
120-day period without renewed compliance with this Section 8.1.

          (d) Notwithstanding the foregoing,  the Company may (i) issue options,
warrants or rights to subscribe for shares of its Common Stock (as appropriately
adjusted for stock splits,  stock dividend and the like) to officers,  employees
and directors of the Company  pursuant to the terms of the Stock Option Plan and
the Stock  Incentive  Plan and  Section  4.4 hereof and may issue  shares of its
Common Stock upon the exercise of any such stock  options,  or upon  exercise of
warrants  outstanding  as of the Closing,  (ii) issue shares of its Common Stock
upon the conversion of the Series Preferred Stock (as appropriately adjusted for
stock splits,  stock  dividends and the like);  (iii) issue shares of its Common
Stock in connection with the acquisition of another Company approved  consistent
with Section 6.1; (iv) issue shares of its Common Stock pursuant to the exercise
of the outstanding options listed on Exhibit D hereto (as appropriately adjusted
for stock splits,  stock  dividends  and the like),  and (v) issue shares of its
capital stock as  contemplated by the  Contribution  Agreements and the Colonial
Option Agreement.

SECTION 9 REGISTRATION RIGHTS; STAND-OFF AGREEMENT

     9.1. Optional Registrations.

          (a) If, at any time or from time to time  after the date  hereof,  the
Company  shall  determine  to  register  any  shares  of its  capital  stock  or
securities  convertible  into capital stock under the Securities Act (whether in
connection  with a public  offering  of  securities  by the  Company (a "primary
offering"),  for the account of any security holder or holders of the Company (a
"secondary



                                      -20-

<PAGE>

offering"),  or both), the Company shall promptly give written notice thereof to
each Series Preferred Stockholder holding Registrable Securities (as hereinafter
defined in Section 9.4 below) then outstanding,  Jalkut (for so long as he shall
hold  Registrable  Securities)  and the  Founder  (for so long as he shall  hold
Founder Securities);  provided,  however,  that such notice obligation shall not
apply to any registration:

               (i) relating to a public offering pursuant to any demand
registration rights under the Warrant Registration Rights Agreement;

               (ii) relating to the registration of any of the Company's
employee benefit plans;

               (iii) on any form that does not permit secondary offerings; or

               (iv) relating to a corporate  reorganization or other transaction
under Rule 145 or any similar rule of the SEC.

          (b) If,  within  thirty  (30) days  after  their  receipt  of a notice
delivered  pursuant  to  clause  (a) of this  Section  9.1,  one or more  Series
Preferred  Stockholders,  Jalkut or the Founder request the inclusion of some or
all of the  Registrable  Securities or Founder  Securities  held by them in such
registration,  the Company shall use its best efforts to effect the registration
under the Securities Act of all  Registrable  Securities and Founder  Securities
which such Holders may request in a writing delivered to the Company within such
thirty (30) days.

          (c) In the case of the  registration of shares of capital stock by the
Company  in  connection  with  any   underwritten   public   offering,   if  the
underwriter(s)  shall have  informed  the  Company  and the  Holders  requesting
inclusion in such offering,  in writing,  that in such underwriter's opinion the
number of Registrable  Securities  and Founder  Securities to be included in the
offering is such as to materially  and  adversely  affect the price at which the
securities  can  be  sold,  the  Company  shall  not  be  required  to  register
Registrable  Securities and Founder  Securities of such Holders in excess of the
amount,  if any, of shares of the capital stock which the principal  underwriter
of such  underwritten  offering  shall  reasonably  and in good  faith  agree to
include  in such  offering  in excess of any  amount  to be  registered  for the
Company.  If any  limitation  of the  number of shares  of  capital  stock to be
registered by the Holders is required pursuant to this clause 9.1(c), the number
of shares  that may be  included  in the  registration  on behalf of the Holders
shall be  allocated  among the Holders or the holders of any other  registration
rights in proportion,  as nearly as practicable,  to their relative  holdings of
Registrable  Securities and Founder Securities,  in the aggregate (provided that
for such purpose the Series E Preferred  Stockholders shall be deemed to own two
times their actual holdings of Series E Preferred  Stock,  and provided  further
that if any Holder does not  register all shares that it is entitled to register
under the foregoing  formula,  then its unused shares shall be reallocated among
the remaining  requesting  Holders in proportion to their  relative  holdings of
Registrable Securities and Founder Securities),  after first excluding from such
registration   statement  all  shares  of  Common  Stock,   other  than  Founder
Securities, sought to be included therein by:

              (i) any  director,  officer or employee of the Company,  including
          Jalkut (unless and until Jalkut has been  involuntarily  terminated as
          an officer of the Company  pursuant  to  Sections  6(d) or 6(f) of the
          Jalkut Employment  Agreement),  pro rata based on the number of shares
          of  Registrable  Securities  requested by each such  individual  to be
          included in such registration;



                                      -21-

<PAGE>

               (ii) any holder thereof not having any such contractual
          incidental registration rights; and


               (iii)  any   holder   thereof   having   contractual   incidental
          registration rights subordinate and junior to the rights of the Series
          Preferred Stockholders.

If such  underwritten  public  offering  is an initial  public  offering  of the
Company's  Common  Stock,  the Company  may limit or  exclude,  to the extent so
advised  by the  underwriter  as  provided  above,  the  amount  of  Registrable
Securities and Founder  Securities to be included in the  registration.  If such
underwritten  public offering is not an initial public offering of the Company's
Common  Stock,  then  the  Series  Preferred  Stockholders  holding  Registrable
Securities,  the Founder, and Jalkut if he has been involuntarily  terminated as
an officer  of the  Company  pursuant  to  Sections  6(d) and 6(f) of the Jalkut
Employment Agreement, shall be allowed to include in the aggregate not less than
thirty-five percent (35%) of the shares subject to such registration  statement,
provided,  however,  that in addition to any limitations  imposed by this clause
(c), in connection with any registration  that includes  securities  pursuant to
the Warrant Registration Rights Agreement, the terms of the Warrant Registration
Rights Agreement as in effect on the date hereof shall govern the inclusion (and
limitations  on inclusion) of  Registrable  Securities,  Founder  Securities and
other securities in such registration.

          (d) The Company shall not grant any rights  relating to the piggy-back
registration  of its capital stock which are superior to or on a parity with the
rights granted to the Series Preferred  Stockholders,  the Founder and Jalkut in
this  Section  9.1  other  than  pursuant  to this  Agreement  and  the  Warrant
Registration Rights Agreement.

     9.2. Required Registrations.

          (a) If on any three (3)  occasions  after the date hereof the Required
Holders notify the Company in writing that the Required  Holders intend to offer
or cause to be  offered  for  public  sale  all or any  portion  of its or their
Registrable Securities, the Company shall notify all of the Holders who would be
entitled  to notice of a proposed  registration  under  Section 9.1 above of its
receipt  of such  notification  from such  Required  Holders.  Upon the  written
request of any such Holder or Holders  delivered  to the Company  within  twenty
(20) days after the Company's delivery of such notification to the Holders,  the
Company shall either:

               (i) elect to make a primary offering, in which case the rights of
          such Holders to  participate in such offering shall be as set forth in
          Section 9.1 above  (except that the Company  shall not be permitted to
          limit the number of shares which may be registered by any Holder,  and
          Holders holding a majority of the Registrable  Securities requested to
          be  included  in such  required  registration  will  have the right to
          select the underwriter); or

               (ii)  use its  best  efforts  to  cause  such of the  Registrable
          Securities  and Founder  Securities as may be requested by any Holders
          to be registered under the Securities Act in accordance with the terms
          of this Section 9.2.

          (b) In the event that (i) the Company shall have completed its initial
     Qualified Public Offering, and (ii) the registration statement filed by the
     Company  under the  Securities  Act in  respect  of such  Qualified  Public
     Offering shall:



                                      -22-

<PAGE>

               (A)  have ceased to be  effective  on or before the date which is
                    thirty (30) days  following  the  expiration  of the lock-up
                    period specified in Section 9.8 hereof; or

               (B)  not have included  pursuant to the provisions of section 9.1
                    hereof the shares of Common Stock  proposed to be registered
                    by the Founder,

then,  in  either  of such  events  but  only in  either  of  such  events  (the
"Triggering Event"), the Founder shall have the rights set forth in this Section
9.2(b).  If on any one occasion at any time following the Triggering  Event, and
subject  to the other  terms  and  conditions  of this  Agreement,  the  Founder
notifies the Company in writing that the Founder intends to offer or cause to be
offered  for public  sale all or any  portion  of his  Founder  Securities,  the
Company  shall  notify all of the  Holders  who would be entitled to notice of a
proposed   registration   under  Section  9.1  above  of  its  receipt  of  such
notification  from the Founder.  Upon the written  request of any such Holder or
Holders  delivered to the Company  within  twenty (20) days after the  Company's
delivery of such notification to the Holders, the Company shall either:

               (x)  elect to make a primary  offering,  in which case the rights
                    of all such Holders to participate in such offering shall be
                    as set forth in Section 9.1 above  (except  that the Company
                    shall not be  permitted  to limit the number of shares which
                    may be registered by any Holder); or

               (y)  use its  best  efforts  to  cause  such  of the  Registrable
                    Securities and Founder Securities as may be requested by any
                    Holders  to  be  registered  under  the  Securities  Act  in
                    accordance with the terms of this Section 9.2;

provided,  however,  that in the event that the  notification  delivered  by the
Founder under this Section 9.2(b) shall have been delivered to the Company on or
before the date which is one year  following  the  completion  of the  Qualified
Public Offering of the Company,  the number of shares of Founder Securities that
may be included in such notification by the Founder hereunder (and in respect of
which the Company shall have the obligations under this Section 9.2(b)) shall be
limited and:

               (1)  shall  not,  in the  case  of an  initial  Qualified  Public
                    Offering in which  shares  constituting  fewer than  fifteen
                    percent  (15%) of the  equity  capital  of the  Company on a
                    fully  diluted  basis  shall  have  been  so  registered  in
                    connection  with such  initial  Qualified  Public  Offering,
                    exceed  thirty  percent  (30%) of the  aggregate  number  of
                    shares  so  registered  in  connection   with  such  initial
                    Qualified Public Offering, and

               (2)  shall not, in all other cases,  exceed twenty  percent (20%)
                    of  the   aggregate   number  of  shares  so  registered  in
                    connection with such initial Qualified Public Offering.

          (c) The Company may postpone the filing of any registration  statement
required by this  Section  9.2 for a  reasonable  period of time,  not to exceed
sixty (60) days during any twelve month period,  if the Company has been advised
by  legal  counsel  that  such  filing  would  require  a  special  audit or the
disclosure of a material  impending  transaction or other matter and the Company
determines  reasonably  and in good  faith  that such  disclosure  would  have a
material  adverse  effect on the Company.  The Company  shall not be required to
cause a registration statement requested



                                      -23-

<PAGE>

pursuant to this  Section 9.2 to become  effective  prior to the later of (i) 90
days following the effective date of a registration  statement  initiated by the
Company  (other than a  registration  effected  solely to  implement an employee
benefit plan or a transaction to which Rule 145 or any other similar rule of the
SEC under the Securities Act is applicable), if the request for registration has
been received by the Company  subsequent to the giving of written  notice by the
Company made in good faith to the Holders  holding  Registrable  Securities  and
Founder Securities that the Company is commencing to prepare a Company-initiated
registration statement,  and (ii) the end of any 'lock-up" or "black-out" period
imposed on the Company or any of the holders of its securities pursuant to or in
connection  with  any  underwriting  or  purchase   agreement   relating  to  an
underwritten  offering  under Rule 144A of the  Securities  Act or a  registered
public offering of equity  securities of the Company,  such period not to exceed
180 days;  provided,  however,  that the Company  shall use its best  efforts to
achieve such effectiveness promptly following the end of the period set forth in
clause (i) or (ii) of this clause (c), as applicable.

               (d)  Notwithstanding the provisions of clauses (a), (b) or (c) of
this Section 9.2, the Company shall not be obligated to effect any  registration
pursuant to:

               (1)  Section 9.2(a),  if the Required Holders propose to register
                    Registrable Securities that may be immediately registered on
                    SEC Form S-3  pursuant to a request  made under  Section 9.3
                    hereof;

               (2)  Section  9.2(a) if the Required  Holders do not request that
                    the offering  which is the subject of such  registration  be
                    firmly underwritten by underwriters selected by the Required
                    Holders and reasonably acceptable to the Company;

               (3)  Section  9.2(b),  if the Founder  does not request  that the
                    offering which is the subject of such registration be firmly
                    underwritten  by  underwriters  selected  by the Founder and
                    reasonably acceptable to the Company; or

               (4)  Section  9.2(a) or 9.2(b),  if the Company,  after using its
                    best efforts to do so, is unable to obtain the commitment of
                    the  underwriter  selected in clauses  (2) or (3) above,  as
                    applicable, to underwrite such offering on a firm commitment
                    basis.

     9.3. Form S-3.

     Following its initial  public  offering,  the Company shall timely file all
reports  required  to be filed  with the SEC  under the  Exchange  Act and shall
otherwise use reasonable  efforts to qualify for registration on SEC Form S-3 or
any comparable or successor form  promulgated by the SEC. If the Company becomes
eligible to use SEC Form S-3 or a comparable  successor  form, the Company shall
use its best  efforts to  continue to qualify at all times for  registration  on
Form S-3 or such  successor  form.  One or more of the  Holders  other  than the
Founder shall have the right to request and have effected one  registration  per
year of shares of Registrable  Securities on Form S-3 or such successor form for
a public  offering of shares of  Registrable  Securities and having an aggregate
proposed offering price exceeding  $1,000,000 (such requests shall be in writing
and shall state the number of shares of Registrable Securities to be disposed of
and the  intended  method  of  disposition  of such  shares  by such  Holder  or
Holders).  The  Company  shall give  notice to all  Holders of the  receipt of a
request  for  registration  pursuant  to this  Section  9.3 and shall  provide a
reasonable opportunity for such Holders to participate in the registration.  The
Company  shall  not be  required  to cause a  registration  statement  requested
pursuant to this Section 9.3 to become effective prior to the later of



                                      -24-

<PAGE>

(i) 90 days following the effective date of a registration  statement  initiated
by the Company  (other  than a  registration  effected  solely to  implement  an
employee  benefit plan or a  transaction  to which Rule 145 or any other similar
rule of the SEC under the  Securities  Act is  applicable),  if the  request for
registration  has been  received  by the  Company  subsequent  to the  giving of
written  notice  by the  Company  made  in good  faith  to the  Holders  holding
Registrable  Securities and Founder Securities that the Company is commencing to
prepare  a  Company-initiated  registration  statement,  and (ii) the end of any
"lock-up"  or "black  out"  period  imposed  on the  Company  pursuant  to or in
connection  with  any  underwriting  or  purchase   agreement   relating  to  an
underwritten SEC Rule 144A or a registered  public offering of equity securities
of the Company, such period not to exceed 180 days; provided,  however, that the
Company  shall use its best  efforts  to  achieve  such  effectiveness  promptly
following  the end of the  period  set forth in clauses  (i) or (ii)  above,  as
applicable,  if the request  pursuant to this Section 9.3 has been made prior to
the  expiration  of such  period.  The  Company may  postpone  the filing of any
registration  statement  required hereunder for a reasonable period of time, not
to exceed 60 days  during  any  twelve-month  period,  if the  Company  has been
advised by legal  counsel that such filing  would  require the  disclosure  of a
material  transaction or other factor and the Company determines  reasonably and
in good faith that such disclosure  would have a material  adverse effect on the
Company.  Subject to the  foregoing,  the Company  shall use its best efforts to
effect  promptly the  registration  of all shares of Common Stock on Form S-3 or
such successor form to the extent requested by the Holder or Holders thereof for
purposes of  disposition.  If so  requested by any Holder in  connection  with a
registration  under this Section  9.3, the Company  shall take such steps as are
required to register such Holder's Registrable  Securities or Founder Securities
for sale on a delayed or  continuous  basis under SEC Rule 415, and to keep such
registration  effective  for the  shorter  of (x) six months or (y) until all of
such Holder's Registrable Securities or Founder Securities registered thereunder
are sold.

     9.4. Registrable Securities.

     For purposes of this Agreement,  the term  "Registrable  Securities"  shall
mean any shares of Common Stock:

          (a) purchased  by, or issued to, a Series  Preferred  Stockholder,  or
issuable upon conversion of the Series  Preferred Stock or other Preferred Stock
of the Corporation;

          (b) issued or issuable to Jalkut upon the exercise of options granted
to him by the Company; or

          (c) issued by way of a stock  dividend or stock split or in connection
with a combination of shares,  recapitalization,  merger, consolidation or other
reorganization,  or any exchange or other  replacement of the shares referred to
in clauses (i) or (ii) above;

provided,  however,  that (x) if a Series  Preferred  Stockholder  owns or holds
shares of Series  Preferred  Stock  (or,  in the case of  Jalkut,  owns or holds
options   exercisable  for  shares  of  Common  Stock),  such  Series  Preferred
Stockholder  (or  optionholder)  shall not be  required  to cause such shares of
Series  Preferred  Stock to be  converted  to Common  Stock (or,  in the case of
Jalkut,  shall not be required to exercise such options) until immediately prior
to the effective date of any applicable registration statement pursuant to which
such shares shall be sold, and (y)  notwithstanding  any other provision of this
Agreement,  the term  "Registrable  Securities"  shall not include any shares of
Common Stock which have  previously  been  registered or which have been sold to
the public either pursuant to a



                                      -25-

<PAGE>

registration  statement  or SEC  Rule  144,  or that  may be sold by the  holder
thereof pursuant to SEC Rule 144(k).

     9.5. Further Obligations of the Company.

     Whenever  the Company is required  hereunder  to register  any  Registrable
Securities or Founder Securities it agrees that it also shall do the following:

          (a) Pay all expenses of such registrations and offerings (exclusive of
underwriting  discounts and  commissions)  and the reasonable fees and expenses,
not to exceed $60,000 per offering, of not more than one independent counsel for
the  Holders  satisfactory  to a  majority  in  interest  of  the  Holders  with
Registrable Securities included in such registration, voting as a single class.

          (b) Use its best efforts (with due regard to management of the ongoing
business of the Company and the allocation of managerial  resources)  diligently
to prepare and file with the SEC a  registration  statement and such  amendments
and  supplements  to said  registration  statement  and the  prospectus  used in
connection  therewith as may be necessary  to keep said  registration  statement
effective for at least 90 days (6 months in the case of a Form S-3  registration
statement under Section 9.3) or such earlier date on which the Holder or Holders
have completed the distribution described in such registration statement, and to
comply with the  provisions  of the  Securities  Act with respect to the sale of
securities covered by said registration for the period necessary to complete the
proposed public offering;

          (c) Furnish to each selling Holder such copies of each preliminary and
final prospectus and such other documents as such Holder may reasonably  request
to  facilitate  the public  offering of its  Registrable  Securities  or Founder
Securities, as the case may be;

          (d) Enter into any reasonable  underwriting  agreement required by the
proposed  underwriter  for the  selling  Holders,  if  any,  in  such  form  and
containing such terms as are customary;  provided, however, that no Holder shall
be required to make any representations or warranties other than with respect to
its title to the Registrable  Securities or Founder Securities,  as the case may
be, and if the underwriter  requires that representations or warranties be made,
the Company shall make all such  representations  and warranties relating to the
Company;

          (e) Use its best efforts to register or qualify the securities covered
by said  registration  statement  under the  securities or blue-sky laws of such
jurisdictions  as any selling Holder may reasonably  request,  provided that the
Company  shall not be required to  register  or qualify  the  securities  in any
jurisdictions which require it to qualify to do business therein or in which the
Company  would be  required to consent  generally  to service of process in such
jurisdiction unless the Company is already so subject;

          (f)  Immediately  notify  each  selling  Holder,  at any  time  when a
prospectus relating to his Registrable Securities or Founder Securities,  as the
case may be, is  required  to be  delivered  under the  Securities  Act,  of the
happening of any event as a result of which such  prospectus  contains an untrue
statement of a material  fact or omits any material  fact  necessary to make the
statements  therein not  misleading,  and,  at the  request of any such  selling
Holder,  prepare a  supplement  or  amendment  to such  prospectus  so that,  as
thereafter  delivered  to the  purchasers  of such  Registrable  Securities  and
Founder Securities, as the case may be, such prospectus shall not



                                      -26-

<PAGE>

contain any untrue  statement  of a material  fact or omit to state any material
fact necessary to make the statements therein not misleading.

          (g) Cause all such Registrable  Securities and Founder Securities,  as
the case may be, to be listed on each securities exchange or quotation system on
which similar securities issued by the Company are then listed or quoted:

          (h)  Otherwise  use its best  efforts  to comply  with the  applicable
securities laws of the United States and other applicable  jurisdictions and all
applicable rules and regulations of the SEC and comparable governmental agencies
in other applicable  jurisdictions and make generally  available to its Holders,
in each case as soon as practicable,  but not later than 45 days after the close
of the period covered thereby,  an earnings statement of the Company which shall
satisfy the provisions of Section 11(a) of the Securities Act;

          (i) Use best  efforts to obtain and  furnish to each  selling  Holder,
immediately  prior to the  effectiveness of the registration  statement (and, in
the case of an underwritten offering, at the time of delivery of any Registrable
Securities or Founder Securities sold pursuant  thereto),  a cold comfort letter
from the Company's independent public accountants in customary form and covering
such  matters of the type  customarily  covered by cold  comfort  letters as the
holders of a majority of the Registrable Securities and Founder Securities being
sold may reasonably request;

          (j) Make available appropriate  management personnel for participation
in the  preparation  and  drafting  of  such  registration  statement,  for  due
diligence  meetings and, to the extent that doing so does not interfere with the
operations and management of the Company, for "road show" meetings, in each case
as reasonably requested by the Holders or the lead managing underwriter; and

          (k) Otherwise  cooperate  with the  underwriter or  underwriters,  the
Commission  and other  regulatory  agencies and take all actions and execute and
deliver or cause to be executed and delivered all documents  necessary to effect
the registration of any Registrable Securities and Founder Securities under this
Section 9.

     9.6. Indemnification; Contribution.

          (a) Incident to any registration statement referred to in this Section
9, and subject to applicable  law, the Company shall indemnify and hold harmless
each  underwriter,  each  Holder  who  offers  or  sells  any  such  Registrable
Securities or Founder Securities in connection with such registration  statement
(including its partners  (including partners of partners and stockholders of any
such partners)), and directors, officers, employees and agents of any of them (a
"Selling  Holder"),  and each person who controls any of them within the meaning
of Section 15 of the Securities Act or Section 20 of the Securities Exchange Act
of 1934, as amended (hereinafter the "Exchange Act") (a "Controlling  Person")),
from and against any and all losses, claims, damages,  expenses and liabilities,
joint or several (including any investigation, legal and other expenses incurred
in connection  with, and any amount paid in settlement  of, any action,  suit or
proceeding or any claim  asserted),  to which they,  or any of them,  may become
subject  under the  Securities  Act, the Exchange Act or other  federal or state
statutory law or regulation, at common law or otherwise, insofar as such losses,
claims,  damages  or  liabilities  arise out of or are  based on (i) any  untrue
statement  or alleged  untrue  statement  of a material  fact  contained in such
registration   statement   (including  any  related  preliminary  or  definitive
prospectus, or any amendment or supplement to such registration statement



                                      -27-

<PAGE>

or prospectus),  (ii) any omission or alleged omission to state in such document
a material fact required to be stated in it or necessary to make the  statements
in it not  misleading,  or (iii) any violation by the Company of the  Securities
Act, any state securities or blue sky laws or any rule or regulation  thereunder
in connection with such registration;  provided, however, that the Company shall
not be liable to the extent that such loss, claim, damage,  expense or liability
arises from and is based on an untrue  statement  or omission or alleged  untrue
statement or omission  made in reliance on and in  conformity  with  information
furnished  in writing  to the  Company by such  underwriter,  Selling  Holder or
Controlling  Person  expressly  for use in  such  registration  statement.  With
respect to such untrue  statement  or omission or alleged  untrue  statement  or
omission in the  information  furnished  to the Company by such  Selling  Holder
expressly  for use in such  registration  statement,  such Selling  Holder shall
indemnify  and hold  harmless  each  underwriter,  the  Company  (including  its
directors,  officers,  employees and agents),  each other Holder  (including its
partners  (including partners of partners and stockholders of such partners) and
directors,  officers,  employees and agents of any of them) whose securities are
so  registered,  and each person who  controls any of them within the meaning of
Section 15 of the  Securities  Act or Section 20 of the Exchange  Act,  from and
against any and all losses, claims, damages, expenses and liabilities,  joint or
several,  to which they, or any of them, may become subject under the Securities
Act, the Exchange Act or other federal or state statutory law or regulation,  at
common law or otherwise to the same extent provided in the immediately preceding
sentence.  In no event,  however,  shall the  liability of a Selling  Holder for
indemnification  under this  Section  9.6(a) in its capacity as such (and not in
its capacity as an officer or director of the Company)  exceed the lesser of (i)
that  proportion  of the total of such losses,  claims,  damages or  liabilities
indemnified  against equal to that proportion of the total securities sold under
such  registration  statement which is being sold by such Selling Holder or (ii)
the  proceeds  received  by such  Selling  Holder  from its sale of  Registrable
Securities (or Founder  Securities,  as the case may be) under such registration
statement.

          (b) If the  indemnification  provided for in Section  9.6(a) above for
any reason is held by a court of competent  jurisdiction to be unavailable to an
indemnified  party in  respect  of any  losses,  claims,  damages,  expenses  or
liabilities referred to therein, then each indemnifying party under this Section
9.6, in lieu of indemnifying such indemnified party thereunder, shall contribute
to the  amount  paid or payable  by such  indemnified  party as a result of such
losses,  claims,  damages,  expenses or liabilities (i) in such proportion as is
appropriate to reflect the relative benefits received by the Company,  the other
Selling  Holders  and the  underwriters  from the  offering  of the  Registrable
Securities  and Founder  Securities,  as  applicable,  or (ii) if the allocation
provided  by clause  (i)  above is not  permitted  by  applicable  law,  in such
proportion as is appropriate to reflect not only the relative  benefits referred
to in clause (i) above but also the  relative  fault of the  Company,  the other
Selling  Holders and the  underwriters  in  connection  with the  statements  or
omissions  which  resulted  in  such  losses,  claims,   damages,   expenses  or
liabilities,  as  well  as any  other  relevant  equitable  considerations.  The
relative  benefits  received  by  the  Company,  the  Selling  Holders  and  the
underwriters  shall be deemed to be in the same respective  proportions that the
net  proceeds  from the offering  (before  deducting  expenses)  received by the
Company and the Selling Holders and the  underwriting  discount  received by the
underwriters,  in each case as set  forth in the table on the cover  page of the
applicable  prospectus,  bear to the  aggregate  public  offering  price  of the
Registrable Securities and Founder Securities, as applicable. The relative fault
of the Company,  the Selling Holders and the underwriters shall be determined by
reference to, among other things, whether the untrue or alleged untrue statement
of a material fact or the omission or alleged  omission to state a material fact
relates to  information  supplied by the  Company,  the  Selling  Holders or the
underwriters and the parties' relative intent, knowledge,  access to information
and opportunity to correct or prevent such statement or omission.



                                      -28-

<PAGE>

          (c) The Company,  the Selling Holders and the underwriters  agree that
it would not be just and  equitable  if  contribution  pursuant to this  Section
9.6(b)  were  determined  by pro rata or per capita  allocation  or by any other
method of allocation which does not take account of the equitable considerations
referred to in the immediately preceding paragraph.  In no event, however, shall
a Selling  Holder be required to contribute any amount under this Section 9.6(b)
in excess  of the  lesser of (i) that  proportion  of the total of such  losses,
claims,  damages or liabilities  indemnified against equal to that proportion of
the total securities sold under such registration  statement which is being sold
by such Selling Holder or (ii) the proceeds received by such Selling Holder from
its sale of Registrable  Securities or Founder  Securities,  as the case may be,
under  such  registration  statement.  No  person  found  guilty  of  fraudulent
misrepresentation  (within the meaning of Section 11(f) of the  Securities  Act)
shall be entitled to  contribution  from any person who was not found  guilty of
such fraudulent misrepresentation.

          (d)  The  amount  paid  by an  indemnifying  party  or  payable  to an
indemnified  party as a result of the losses,  claims,  damages and  liabilities
referred  to in this  Section  9.6 shall be deemed to  include,  subject  to the
limitations set forth above, any legal or other expenses  reasonably incurred by
such  indemnified  party in connection with  investigating or defending any such
action or claim,  payable  as the same are  incurred.  The  indemnification  and
contribution provided for this Section 9.6 shall remain in full force and effect
regardless of any investigation made by or on behalf of the indemnified  parties
or  any  officer,  director,  employee,  agent  or  controlling  person  of  the
indemnified  parties.  Any  indemnification  of legal fees and costs pursuant to
this Section 9.6 shall be paid by the  indemnifying  party when and as such fees
and costs are incurred by the indemnified party.

     9.7. Rule 144 and Rule 144A Requirements.

     In the event that the Company becomes and for so long as it remains subject
to Section 13 or Section  15(d) of the Exchange  Act, the Company  shall use its
best  efforts  to take all  action  as may be  required  as a  condition  to the
availability of Rule 144 or Rule 144A under the Securities Act (or any successor
or similar  exemptive rules  hereafter in effect).  The Company shall furnish to
any Series  Preferred  Stockholder  holding  Registrable  Securities  and to the
Founder  holding  Founder  Securities,  within  fifteen  (15)  days of a written
request,  a written  statement  executed  by the  Company as to the steps it has
taken to comply with the current public  information  requirement of Rule 144 or
Rule 144A or such successor rules.

     9.8. Market Stand-off Agreement.

     Each and all of the Stockholders  party to this Agreement,  if so requested
by the underwriter of the Company's securities, shall agree not to sell, pledge,
encumber  or  otherwise  transfer  or  dispose  of any  Common  Stock  (or other
securities) of the Company held by such  Stockholders  during the 180-day period
following the effective  date of the Company's  initial  public  offering or any
other  registration  statement  of the  Company  in which such  Stockholder  has
included securities for registration,  or during any shorter period agreeable to
the  managing  underwriter.  Such  agreement  shall be in writing  and in a form
reasonably  satisfactory  to the Company and such  underwriter.  The Company may
impose  stop-transfer  instructions  with respect to the shares of Common Stock,
Series  Preferred  Stock, or any other  securities of the Company subject to the
foregoing restriction until the end of such period.



                                      -29-

<PAGE>

SECTION 10 GENERAL.

     10.1. Amendments, Waivers and Consents.

          (a) For the purposes of this  Agreement  and all  agreements  executed
pursuant  hereto,  no course of dealing  between the Company and any Stockholder
and no delay on the part of any party hereto in exercising any rights  hereunder
or thereunder shall operate as a waiver of the rights hereof and thereof. Except
as otherwise  provided in Section  10.1(c)  hereof,  no provision  hereof may be
waived  otherwise  than by a written  instrument  signed by the party so waiving
such covenant or other provision.

          (b)  Except  as  otherwise  provided  by the  terms of this  Agreement
(including  Section  10(c)  hereof),  all and  any  amendments  to and  consents
required by this Agreement may be made, and compliance with any term,  covenant,
condition  or  provision  set forth  herein  may be  omitted  or waived  (either
generally or in a particular instance and either retroactively or prospectively)
by the consent of the holders of a majority of the issued and outstanding shares
of Series Preferred Stock and Common Stock, voting together as a single class.

          (c) No amendment,  waiver or consent that adversely affects the Series
A Preferred  Stock,  the Series B Preferred Stock, the Series C Preferred Stock,
the Series D Preferred  Stock,  or the Series E Preferred  Stock, or affects any
rights  specifically  granted  to the  Series A  Preferred  Stock,  the Series B
Preferred  Stock, the Series C Preferred Stock, the Series D Preferred Stock, or
the Series E  Preferred  Stock shall be  approved  without  the  approval of the
holders of a majority of the issued and  outstanding  Series A Preferred  Stock,
Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock, or
Series E  Preferred  Stock,  respectively,  each voting  separately  as a class;
provided,  however, that any amendment, waiver or consent that adversely affects
one Series Preferred Stockholder,  or affects any rights specifically granted to
such Series Preferred  Stockholder,  in a manner different than all other Series
Preferred  Stockholders  holding  the same  series  of Series  Preferred  Stock,
including,  but not limited to, the right to  designate  certain  directors  set
forth in Sections 5.1 and 5.2 hereof,  shall not be approved without such Series
Preferred Stockholder's consent.

          (d) No amendment to Articles 7, 8 or 9 hereof that would,  relative to
the rights of any other class of Stock,  adversely  affect any rights granted to
the  Founder  under this  Agreement  shall be  approved  without  the  Founder's
consent.

          (e)  Except  as  otherwise  expressly  provided  by the  terms of this
Agreement, any amendment or waiver effected in accordance with this Section 10.1
shall be binding upon:

              (i) the Company;

              (ii) each holder of the shares Series  Preferred Stock at the time
outstanding and each future holder of the shares of Series Preferred Stock;

              (iii) the Founder and any transferee of the shares of Common
Stock owned by the Founder as of the date hereof; and

              (iv) Jalkut and any transferee of the Shares of Common Stock owned
by Jalkut as of the date hereof.



                                      -30-

<PAGE>

10.2. Legend on Securities.

     The Company and the  Stockholders  acknowledge and agree that the following
legend  shall be typed  on each  certificate  evidencing  any of the  shares  of
capital  stock  of  the  Company  issued  hereunder  held  at  any  time  by the
Stockholders.

     "THE  SECURITIES  REPRESENTED  HEREBY  HAVE NOT BEEN  REGISTERED  UNDER THE
SECURITIES  ACT OF 1933, AS AMENDED (THE ACT),  OR ANY STATE  SECURITIES OR BLUE
SKY LAWS AND MAY NOT BE OFFERED,  SOLD,  TRANSFERRED,  HYPOTHECATED OR OTHERWISE
ASSIGNED  EXCEPT (1) PURSUANT TO A  REGISTRATION  STATEMENT WITH RESPECT TO SUCH
SECURITIES  WHICH IS  EFFECTIVE  UNDER THE ACT OR (2)  PURSUANT TO AN  AVAILABLE
EXEMPTION  FROM  REGISTRATION  UNDER  THE ACT  RELATING  TO THE  DISPOSITION  OF
SECURITIES AND (3) IN ACCORDANCE WITH APPLICABLE  STATE  SECURITIES AND BLUE SKY
LAWS.  THESE  SECURITIES ARE ALSO SUBJECT TO THE  PROVISIONS OF A  STOCKHOLDERS'
AGREEMENT  DATED  AS OF  MARCH  30,  2000,  INCLUDING  CERTAIN  RESTRICTIONS  ON
TRANSFER,  INDEMNITY  PROVISIONS  AND VOTING  PROVISIONS  SET FORTH  THEREIN.  A
COMPLETE AND CORRECT COPY OF THIS  AGREEMENT IS AVAILABLE FOR  INSPECTION AT THE
PRINCIPAL  OFFICE OF THE COMPANY AND WILL BE FURNISHED UPON WRITTEN  REQUEST AND
WITHOUT CHARGE."

The Company shall be obligated to reissue  promptly at the request of any Holder
thereof  unlegended  certificates  if the Holder  thereof shall have obtained an
opinion of counsel at such Holder's expense reasonably acceptable to the Company
to the effect that the securities  proposed to be disposed of may lawfully be so
disposed of without registration,  qualification, or legend, whether pursuant to
Rule 144(k), an effective registration statement, or otherwise.

     10.3. Governing Law.

     This  Agreement  shall be deemed to be a contract made under,  and shall be
construed in accordance with, the laws of the State of Delaware,  without giving
effect to conflict of laws principles thereof.

     10.4. Section Headings and Gender.

     The  descriptive   headings  in  this  Agreement  have  been  inserted  for
convenience  only and  shall  not be deemed  to limit or  otherwise  affect  the
construction  of any provision  thereof or hereof.  The use in this Agreement of
the masculine  pronoun in reference to a party hereto shall be deemed to include
the feminine or neuter as the context may require.

     10.5. Counterparts.

     This   Agreement   may  be  executed   simultaneously   in  any  number  of
counterparts,  each of which when so executed and delivered shall be taken to be
an original;  but such  counterparts  shall together  constitute but one and the
same document.



                                      -31-

<PAGE>

     10.6. Notices and Demands.

     Any notice or demand  which is  required or provided to be given under this
Agreement shall be deemed to have been  sufficiently  given and received for all
purposes when delivered by hand,  telecopy,  telex or other method of facsimile,
or five business days after being sent by certified or registered mail,  postage
and charges prepaid,  return receipt requested, or two business days after being
sent by  overnight  delivery  providing  receipt of  delivery  to the  following
addresses: If to the Company, at 1015 31st Street, N.W., Washington, D.C. 20007,
or at any  other  address  designated  by the  Company  to the  Stockholders  in
writing; if to a Stockholder,  at his or its mailing address as shown on Exhibit
A hereto, or at any other address  designated by such Stockholder to the Company
and the Stockholders in writing.

     10.7. Severability.

     Whenever possible, each provision of this Agreement shall be interpreted in
such a manner as to be  effective  and valid under  applicable  law,  but if any
provision of this  Agreement  shall be deemed  prohibited  or invalid under such
applicable  law,  such  provision  shall be  ineffective  to the  extent of such
prohibition  or  invalidity,  and  such  prohibition  or  invalidity  shall  not
invalidate  the  remainder  of such  provision or the other  provisions  of this
Agreement.

     10.8. Integration.

     This Agreement,  including the exhibits, documents and instruments referred
to herein or therein,  constitutes the entire agreement and supersedes all other
prior  agreements and  understandings,  both written and oral, among the parties
with respect to the subject mater hereof.

     10.9. Review with Counsel.

     Each party to this  Agreement  hereby  confirms  and  acknowledges  for the
benefit of each and all of the other  parties  hereto that he has  obtained  the
advice of counsel  with respect to its  execution,  and that he has entered into
this Agreement of his own free will and not under compulsion or duress.

     10.10. Waiver of Jury Trial.

     EACH PARTY HERETO HEREBY  WAIVES ANY RIGHT WHICH IT MAY  OTHERWISE  HAVE AT
LAW OR IN EQUITY TO A TRIAL BY JURY IN CONNECTION WITH ANY SUIT OR PROCEEDING AT
LAW OR IN EQUITY  BROUGHT BY ANY PARTY HERETO AGAINST  ANOTHER  WAIVING PARTY OR
WHICH OTHERWISE RELATES TO THIS AGREEMENT.

     10.11.Subsequent Series D or E Preferred  Stockholders.  To the extent that
the Company  issues in  accordance  with the terms hereof any Series D Preferred
Stock or Series E Preferred Stock subsequent to the date hereof,  each purchaser
thereof (i) shall be required to become a party to this  Agreement,  with all of
the benefits,  rights and obligations of a Stockholder  hereunder by executing a
written agreement between such purchaser and the Company,  which agreement shall
not require the execution of the then current Stockholders  hereunder,  and (ii)
shall make the  representations  in Section 3,  provided  that,  with respect to
Section  3.3(a),  such  purchaser  shall make the  representation  of no present
intention or plan as of the date thereof, formally or informally, to transfer or
dispose of any of the purchased  shares to any person who is not a member of the
controlling group of



                                      -32-

<PAGE>

shareholders  for purposes of IRC Section 351.  The Company  shall  provide each
Stockholder  notice of any parties added to this Agreement pursuant to the terms
hereof.

     10.12. Transferees. Except as specifically set forth in this Agreement, any
transferee of Founder Securities or Series Preferred Stock shall be bound by and
subject to the  restrictions  and  agreements  and  entitled to the benefits and
rights set forth in Sections 2, 4, 5, 6, 7, 8, 9 and 10 of this  Agreement as if
such transferee was a Founder or Series Preferred Stockholder as defined herein.
The relevant Holder or Holders,  as the case may be, shall notify the Company at
the time of such transfer.  All  certificates  representing  shares held by such
transferees shall bear a legend to such effect.  Any transfers of shares subject
to  this  Agreement   shall  be  effected  in  compliance  with  all  applicable
requirements  of the Federal  Communications  Commission (the "FCC") and federal
telecommunications  law, including any relevant limitations on foreign ownership
of FCC licenses.



                                      -33-

<PAGE>

     IN WITNESS  WHEREOF,  the parties  have caused  this  Agreement  to be duly
executed and  delivered by their proper and duly  authorized  officers as of the
day and year first above written.

                                    PATHNET TELECOMMUNICATIONS, INC.

                                       By:/s/ Richard Jalkut
                                         ---------------------------------
                                          Name: CEO
                                          Title:

                                  STOCKHOLDERS

                                    SPECTRUM EQUITY INVESTORS, L.P.

                                       By:/s/ Chris J. Maroni
                                         ---------------------------------
                                          Name: K.J. Maroni
                                          Title:

                                    SPECTRUM EQUITY INVESTORS II, L.P.

                                       By:/s/ Chris J. Maroni
                                         ---------------------------------
                                          Name:K.J. Maroni
                                          Title:

                                        /s/ Shawn J. Colo
                                    -------------------------------------
                                          Shawn J. Colo

                                        /s/ Ben Coughlin
                                    -------------------------------------
                                          Benjamin M. Coughlin


                                       /s/ illegible
                                    -------------------------------------
                                          Michael J. Kenneally



                                      -34-

<PAGE>

                                      /s/ illegible
                                    -------------------------------------
                                          Matthew N. Mochary


                                      /s/ illegible
                                    -------------------------------------
                                          Robert A. Nicholson


                                     /s/ F Wang
                                    -------------------------------------
                                          Fred Wang


                                    NEW ENTERPRISE ASSOCIATES VI, LIMITED
                                   PARTNERSHIP

                                       By: /s/ illegible
                                         ---------------------------------
                                          Name:
                                          Title:

                                    ONSET ENTERPRISE ASSOCIATES II, L.P.

                                       By: /s/ illegible
                                         ---------------------------------
                                          Name:
                                          Title: illegible

                                    ONSET ENTERPRISES ASSOCIATES III, L.P.

                                       By: /s/ illegible
                                         ---------------------------------
                                          Name:
                                          Title: Managing Director
                                                 OEA III Management, LLC
                                                 The General Partner of
                                                 Onset Enterprise Associates III
                                                  L.P.

                                      -35-

<PAGE>


                                    MONTAUK PARTNERS, L.P.

                                       By: /s/ Brian M Smith
                                         ---------------------------------
                                          Name:   Brian M Smith
                                          Title:  Managing Member of
                                                  General Partner

                                    PAUL CAPITAL PARTNERS V, L.P.

                                       By: /s/ Bryon T. Sheets
                                         ---------------------------------
                                          Name:   Bryon T. Sheets
                                          Title:  Manager of Paul Capital
                                                       Management, LLC

                                    PAUL CAPITAL PARTNERS V (DOMESTIC ANNEX
                                    FUND), L.P.

                                       By:/s/ Bryon T. Sheets
                                         ---------------------------------
                                          Name:   Bryon T. Sheets
                                          Title:  Manager of Paul Capital
                                                       Management, LLC


                                    PAUL CAPITAL PARTNERS V INTERNATIONAL, L.P.

                                       By:/s/ Bryon T. Sheets
                                         ---------------------------------
                                          Name:   Bryon T. Sheets
                                          Title:  Manager of Paul Capital
                                                       Management, LLC



                                      -36-

<PAGE>

                                    PAUL CAPITAL PARTNERS VI, L.P.

                                       By:/s/ Bryon T. Sheets
                                         ---------------------------------
                                          Name:   Bryon T. Sheets
                                          Title:  Manager of Paul Capital
                                                       Management, LLC


                                    PCP ASSOCIATES, L.P.

                                       By:/s/ Bryon T. Sheets
                                         ---------------------------------
                                          Name:   Bryon T. Sheets
                                          Title:  Manager of Paul Capital
                                                       Management, LLC


                                        /s/ Thomas Domencich
                                    -------------------------------------
                                          Thomas Domencich


                                        /s/ Dennis R. Patrick
                                    -------------------------------------
                                          Dennis R. Patrick


                                    TORONTO DOMINION CAPITAL (U.S.A.), INC.

                                       By: /s/ Martha L. Gariepy
                                         ---------------------------------
                                          Name:   Martha L. Gariepy
                                          Title:  Secretary/Treasurer

                                    GROTECH PARTNERS IV, L.P.

                                       By:/s/ Patrick Kerins
                                         ---------------------------------
                                          Name:   Patrick Kerins
                                          Title:  Managing Director



                                      -37-

<PAGE>

                                    UTECH CLIMATE CHALLENGE FUND, L.P.

                                       By:/s/ Robert W. Shaw Jr
                                         ---------------------------------
                                          Name: Robert W. Shaw Jr
                                          Title: Managing Member

                                    UTILITY COMPETITIVE ADVANTAGE FUND

                                       By:/s/ William T. Heflin
                                         ---------------------------------
                                          Name:   William T. Heflin
                                          Title:  Managing Director

                                    FBR TECHNOLOGY VENTURE PARTNERS, L.P.

                                       By: /s/ Gene Riechers
                                         ---------------------------------
                                          Name: Gene Riechers
                                          Title: Managing Director

                                    THE BURLINGTON NORTHERN AND SANTA FE
                                    RAILWAY COMPANY

                                       By: /s/  Illegible
                                         ---------------------------------
                                          Name:
                                          Title:

                                    COLONIAL PIPELINE COMPANY

                                       By: /s/ D.L. Lemmon
                                         ---------------------------------
                                          Name:   D.L. Lemmon
                                          Title:  President and Chief Executive
                                                    Officer




                                      -38-

<PAGE>

                                    CSX TRANSPORTATION, INC.

                                       By: /s/ Paul Sandler
                                         ---------------------------------
                                          Name:   Paul D. Sandler
                                          Title:  Senior Vice President -
                                                   Corporate Services


                                        /s/ David Schaeffer
                                    -------------------------------------
                                          David Schaeffer



                                      -39-


                                  PATHNET, INC.


                        PATHNET TELECOMMUNICATIONS, INC.


                              THE BANK OF NEW YORK


                         ------------------------------


                             SUPPLEMENTAL INDENTURE


                           Dated as of March 30, 2000


                                       To


                      Indenture, Dated as of April 8, 1998,


                                     Between


                                  Pathnet, Inc.


                                       and


                        The Bank of New York, as Trustee





                         ------------------------------











<PAGE>



                                      -81-
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                                TABLE OF CONTENTS
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RECITALS..........................................................................................................1


AMENDMENTS TO "DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION"...........................................2

   Section 101.       Introduction................................................................................2
   Section 102.       Revised Definitions.........................................................................3
      Accounts Receivable Subsidiary..............................................................................3
      Amendment Date..............................................................................................4
      Asset Sale..................................................................................................4
      Board of Directors..........................................................................................4
      Board Resolution............................................................................................4
      Cash Equivalents............................................................................................4
      Change of Control...........................................................................................5
      Consolidated Adjusted Net Income............................................................................6
      Consolidated Indebtedness...................................................................................6
      Consolidated Indebtedness to Consolidated Operating Cash Flow Ratio.........................................6
      Consolidated Interest Expense...............................................................................7
      Consolidated Operating Cash Flow............................................................................8
      Consolidated Tax Expense....................................................................................8
      Credit Facilities...........................................................................................8
      Currency Agreements.........................................................................................8
      Debt Securities.............................................................................................8
      Disinterested Director......................................................................................8
      Event of Default............................................................................................9
      Fair Market Value..........................................................................................10
      Guarantee..................................................................................................10
      Incumbent..................................................................................................10
      Incumbent Agreement........................................................................................10
      Incur......................................................................................................11
      Indebtedness...............................................................................................11
      Invested Capital...........................................................................................12
      Investment.................................................................................................12
      Net Cash Proceeds..........................................................................................12
      Officers' Certificate......................................................................................13
      Parent.....................................................................................................13
      Permitted Indebtedness.....................................................................................13
      Permitted Investment.......................................................................................16
      Permitted Liens............................................................................................17
      Permitted Telecommunications Asset Sale....................................................................19
      Permitted Telecommunications Joint Venture.................................................................19
      Redeemable Capital Stock...................................................................................19
      Restricted Company Subsidiary..............................................................................19
      Restricted Entity..........................................................................................20
      Restricted Parent Subsidiary...............................................................................20
      Restricted Subsidiary......................................................................................20
      Sale-Leaseback Transaction.................................................................................20
      Significant Subsidiary.....................................................................................20
      Subsidiary.................................................................................................20
      Telecommunications Assets..................................................................................20
      Telecommunications Business................................................................................21
      Telecommunications Indebtedness............................................................................21
      Unrestricted Subsidiary....................................................................................21
   Section 103.       Definitions for Purposes of Section 1017(a)................................................22
      Accounts Receivable Subsidiary.............................................................................22
      Allowable Company Indebtedness.............................................................................22
      Asset Sale.................................................................................................22
      Board of Directors.........................................................................................23
      Board Resolution...........................................................................................23
      Cash Equivalents...........................................................................................23
      Consolidated Adjusted Net Income...........................................................................23
      Consolidated Indebtedness..................................................................................24
      Consolidated Indebtedness to Consolidated Operating Cash Flow Ratio........................................24
      Consolidated Interest Expense..............................................................................25
      Consolidated Operating Cash Flow...........................................................................25
      Consolidated Tax Expense...................................................................................26
      Event of Default...........................................................................................26
      Fair Market Value..........................................................................................27
      Incumbent..................................................................................................27
      Incumbent Agreement........................................................................................27
      Incur......................................................................................................27
      Indebtedness...............................................................................................28
      Invested Capital...........................................................................................29
      Investment.................................................................................................29
      Net Cash Proceeds..........................................................................................29
      Permitted Indebtedness.....................................................................................30
      Permitted Investment.......................................................................................32
      Permitted Liens............................................................................................33
      Permitted Restriction......................................................................................35
      Permitted Telecommunications Asset Sale....................................................................35
      Permitted Telecommunications Joint Venture.................................................................36
      Permitted Transaction......................................................................................36
      Restricted Payment.........................................................................................37
      Sale-Leaseback Transaction.................................................................................41
      Significant Subsidiary.....................................................................................41
      Telecommunications Assets..................................................................................41
      Telecommunications Business................................................................................41
      Telecommunications Indebtedness............................................................................42
      Unrestricted Company Subsidiary............................................................................42
   Section 104.       Amendment to Section 103...................................................................43

AMENDMENTS TO "NOTE FORMS".......................................................................................43

   Section 105.  Amendment to Section 202........................................................................43
   Section 106.       Amendment to Section 203...................................................................46
   Section 107.       Addition of Section 203A...................................................................48
   Section 108.       Amendment to Section 501...................................................................53

AMENDMENTS TO "CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE".............................................53

   Section 109.       Amendment to Article Eight.................................................................53

AMENDMENTS TO "SUPPLEMENTAL INDENTURES"..........................................................................55

   Section 110.       Amendment to Section 901...................................................................55
   Section 111.       Amendment to Section 902...................................................................56
   Section 112.       Amendment to Section 1002..................................................................57
   Section 113.       Amendment to Section 1003..................................................................58
   Section 114.       Amendment to Section 1004..................................................................59
   Section 115.       Amendment to Section 1005..................................................................59
   Section 116.       Amendment to Section 1006..................................................................60
   Section 117.       Amendment to Section 1007..................................................................60
   Section 118.       Amendment to Section 1008..................................................................61
   Section 119.       Amendment to Section 1009..................................................................61
   Section 120.       Amendment to Section 1010..................................................................62
   Section 121.       Amendment to Section 1011..................................................................63
   Section 122.       Amendment to Section 1012..................................................................63
   Section 123.       Amendment to Section 1013..................................................................66
   Section 124.       Amendment to Section 1014..................................................................67
   Section 125.       Amendment to Section 1015..................................................................68
   Section 126.       Amendment to Section 1016..................................................................68
   Section 127.       Amendment to Section 1017..................................................................69
   Section 128.       Amendment to Section 1018..................................................................71

AMENDMENTS TO "SECURITY".........................................................................................72

   Section 129.       Amendments to Article 12...................................................................72

AMENDMENTS TO "DEFEASANCE AND COVENANT DEFEASANCE"...............................................................74

   Section 130.       Amendments to Article 13...................................................................74

PARENT GUARANTEE.................................................................................................77

   Section 131.       Guarantee..................................................................................78

MISCELLANEOUS....................................................................................................78

   Section 132        Waiver.....................................................................................78
   Section 133.       Acts of Holders............................................................................78
   Section 134.       Notice of Holders; Waiver..................................................................79
   Section 135.       Counterparts...............................................................................79
   Section 136.       Governing Law..............................................................................79
   Section 137.       Separability Clause........................................................................80
   Section 138.       Headings...................................................................................80
   Section 139.       Effect of Supplemental Indenture...........................................................80
   Section 140.       Indenture in Full Force and Effect as Supplemented.........................................80

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              SUPPLEMENTAL   INDENTURE,   dated  as  of  March  30,   2000  (the
"Supplemental  Indenture"),  among PATHNET, INC., a Delaware corporation (herein
called the  "Company")  having its principal  office at 1015 31st Street,  N.W.,
Washington D.C. 20007, PATHNET TELECOMMUNICATIONS,  INC., a Delaware corporation
(herein  called the "Parent")  having its principal  office at 1015 31st Street,
N.W.,  Washington  D.C.  20007,  and THE BANK OF NEW  YORK,  a New York  banking
corporation, as Trustee (herein called the "Trustee") to the Indenture, dated as
of  April  8,  1998,   between  the  Company  and  the  Trustee  (the  "Original
Indenture").


                                    RECITALS

              The  Company  and the  Trustee  have  entered  into  the  Original
Indenture.  The Company has issued $350,000,000 in aggregate principal amount of
12 1/4%  Senior  Notes due 2008.  The Company  originally  issued the notes in a
so-called A/B private placement transaction pursuant to which, in September 1998
(as required by the terms of the Original Indenture),  the Company exchanged the
privately placed notes for substantially identical series notes (the "Notes") in
an  offering  registered  under  the  Securities  Act.  The  Notes,  which  were
registered  with the SEC in the "B"  portion  of the  "A/B"  exchange  offering,
continue to be governed by the terms of the Original Indenture;

              The  Company  and  the  Parent  are  proposing  to  enter  into  a
contribution and re-organization transaction (the "Transaction").  In connection
with the  Transaction,  the Parent and the Company have entered into a series of
Contribution  Agreements with the parties to the  Transaction  pursuant to which
the Parent will (i) issue shares of Series D Convertible Preferred Stock, with a
par value of $0.01 per share and Series E Convertible  Preferred  Stock,  with a
liquidation  preference of $0.01 per share in exchange for the  contribution  of
leasehold interests in rights of way owned by the several  counterparties to the
Contribution  Agreements,  and (ii) exchange  shares of Common Stock,  par value
$0.01 per share and Series A, B and C Convertible  Preferred Stock,  each with a
par value of $0.01 per share,  for shares of Common  Stock,  par value $0.01 per
share, and Series A, B and C Preferred Stock, each with a liquidation preference
of $0.01 per share,  of the Company held by existing  holders of such securities
of the Company;

              In  connection  with the  Transaction,  the Parent will deliver an
irrevocable and unconditional  guarantee of the Company's  obligations under the
Notes;

              In addition,  the Parent has agreed to accept covenant obligations
similar to the covenant  obligations  that are currently  imposed on the Company
under the Original  Indenture and the Parent and the Company wish to ensure that
transactions between the Company and the Parent or the Company and certain other
subsidiaries  of  the  Parent  are  permitted  to  the  same  extent  that  such
transactions were permitted between the Company and its Restricted  Subsidiaries
under the Original Indenture;

              Pursuant to Section  902 of the  Original  Indenture,  the parties
hereto  desire to enter into this  Supplemental  Indenture and the holders of at
least a majority in aggregate  principal  amount of the  Outstanding  Notes have
consented  to the  amendments  to the  Original  Indenture  set  forth  in  this
Supplemental Indenture as required by Section 902 of the Original Indenture;

              Any references  herein to the "Indenture"  shall be deemed to be a
reference to the Original  Indenture as amended by this Supplemental  Indenture,
and  unmodified  references to Sections or  Subsections  are to such Sections or
Subsections of the Indenture;

              It is the intent of the parties that this  Supplemental  Indenture
be effective as of the date set forth above;

              NOW, THEREFORE, THIS SUPPLEMENTAL INDENTURE WITNESSETH:

              For and in consideration  of the foregoing  premises and for other
good and valuable consideration, the receipt of which is hereby acknowledged, it
is mutually covenanted and agreed for the equal and proportionate benefit of all
Holders of the Notes as follows:


                           AMENDMENTS TO "DEFINITIONS
                  AND OTHER PROVISIONS OF GENERAL APPLICATION"
SECTION 101.      INTRODUCTION.
                  ------------

(a) The definitions in the Original  Indenture are amended in this  Supplemental
Indenture to the extent  necessary (1) to impose covenant  obligations  upon the
Parent that are  substantively  equivalent to those imposed on the Company under
the Original Indenture,  and (2) to permit  transactions  between the Parent and
the  Company or any other  Restricted  Subsidiaries  of the  Parent  that may be
created in the future to the extent that such transactions are permitted between
the Company and its Restricted Subsidiaries under the Original Indenture.  These
amended definitions are contained in Section 102 of this Supplemental Indenture.

(b) It is the intent of the parties to this  Supplemental  Indenture to preserve
unmodified the substance of the covenant and other obligations  imposed upon the
Company under the Original Indenture.

(c) Section 902(2) of the Original Indenture provides that the obligation of the
Company (1) to make and consummate an Excess  Proceeds Offer with respect to any
Asset Sale by the Company or any of its  Restricted  Subsidiaries  in accordance
with Section 1017 of the Original  Indenture,  and (2) to make and  consummate a
Change of Control  Offer in the event of a Change of  Control of the  Company in
accordance with Section 1010 of the Original Indenture (together, the "Specified
Obligations") cannot be amended,  changed or modified without the consent of the
Holder of each Outstanding Note affected thereby. Section 902(2) of the Original
Indenture  further  provides  that the  definitions  relating  to the  Specified
Obligations  cannot be amended,  changed or  modified so as to amend,  change or
modify the obligations of the Company with respect to the Specified  Obligations
without the consent of the Holder of each Outstanding Note affected thereby.

(d) In order to effect the  amendments  described in paragraph (a) above,  it is
necessary to amend certain defined terms that are otherwise used in Section 1017
of the Original  Indenture.  In order to comply with the  provisions  of Section
902(2) of the Original  Indenture,  as described  in  paragraph  (c) above,  the
obligations on the Company and the Restricted Company  Subsidiaries  pursuant to
Section  1017  of the  Original  Indenture  have  been  reproduced  without  the
inclusion of  references  to the Parent in Section  122(a) of this  Supplemental
Indenture,  and will be incorporated  as Section  1017(a) of the Indenture.  The
definitions  from  Section 102 of this  Supplemental  Indenture  used in Section
1017(a) of the Indenture are also reproduced without the inclusion of references
to  the  Parent.  Certain  technical  modifications  to  these  definitions  are
necessary to preserve the economic substance of these Company-specific covenants
and  obligations.  These  "Section  1017(a) only"  definitions  are set forth in
Section 103 of this Supplemental Indenture.

(e) It is not  necessary to  reproduce  the  obligations  of the Company and the
Restricted Company  Subsidiaries  pursuant to Section 1010 without the inclusion
of  reference  to the Parent in order to comply  with  Section  902(2).  This is
because the proposed  amendment  does not modify or amend the  obligation of the
Company and its Restricted Company  Subsidiaries to make and consummate a Change
of Control Offer,  but rather provides that such obligation is also triggered by
a Change of Control of the  Parent.  The  definition  of "Change of  Control" is
modified  accordingly and the revised  definition is contained in Section 102 of
this  Supplemental  Indenture.  All other capitalized terms used in Section 1010
are  defined  within  that  Section  or have  the  meaning  given to them in the
Original Indenture.

(f) Defined terms set forth in Section 101 of the Original Indenture that do not
need to be amended for the purposes of this Supplemental Indenture,  and are not
included in the revised  definitions in Section 102 or 103 of this  Supplemental
Indenture, retain the meaning given to them in the Original Indenture.

(g) Wherever used in this Supplemental Indenture, "including" shall be deemed to
mean "including without limitation".

SECTION 102.      REVISED DEFINITIONS.
                  -------------------

              For  all  purposes  of  this  Supplemental  Indenture,  except  as
otherwise  expressly  provided  herein  and  subject  to  Section  103  of  this
Supplemental  Indenture,  the defined terms listed below shall have the meanings
ascribed thereto below.  For the avoidance of doubt, any capitalized  terms used
in Section  1017(a) shall have the meanings  ascribed  thereto in Section 103 of
this Supplemental Indenture,  and to the extent any such term is also defined in
this Section 102, the  definition  contained in this Section 102 shall not apply
to such term as used in Section 1017(a);

              "ACCOUNTS  RECEIVABLE  SUBSIDIARY"  means any  Restricted  Company
Subsidiary or Restricted  Parent  Subsidiary  that is,  directly or  indirectly,
wholly  owned by the  Company or the  Parent  (as the case may be)  (other  than
directors qualifying shares) and organized for the purpose of and engaged in (i)
purchasing,   financing  and  collecting  accounts  receivable   obligations  of
customers  of any  Restricted  Entity,  (ii) the sale or  financing  of accounts
receivable  or interests  therein and (iii) other  activities  directly  related
thereto.

              "AMENDED AND RESTATED PLEDGE AGREEMENT" means the amended and
restated  pledge  agreement  dated as of the date  hereof,  by and  between  the
Trustee  and the  Company,  governing  the  disbursement  of funds in the Escrow
Account.

              "AMENDMENT  DATE"  means  the date as of which  this  Supplemental
Indenture is executed by the parties hereto.

              "ASSET SALE" means any sale, issuance, conveyance, transfer, lease
or  other   disposition   (including   by  way  of  merger,   consolidation   or
Sale-Leaseback   Transaction)   (collectively,   a   "transfer"),   directly  or
indirectly, in one or a series of related transactions, of (i) any Capital Stock
of any Subsidiary; (ii) all or substantially all of the properties and assets of
the Parent or any  Subsidiary;  or (iii) any other  properties  or assets of the
Parent or any  Subsidiary,  other than in the  ordinary  course of business  (it
being  understood  that the  ordinary  course of business  includes,  but is not
restricted to, any transfer or sale of, or the grant of a right to use, an asset
to an Incumbent  pursuant to (x) an Incumbent  Agreement,  (y) applicable law or
(z) an agreement to which such Incumbent is a party which exists on the date of,
and is not entered into in contemplation of, such Incumbent Agreement).  For the
purposes  of this  definition,  the term  "Asset  Sale"  shall not  include  any
transfer  of  properties  or assets (A) that is governed  by the  provisions  of
Article  Eight of this  Indenture  (B) of the  Parent to any  Restricted  Parent
Subsidiary,  or of any Restricted  Parent  Subsidiary to the Parent or any other
Restricted Parent Subsidiary in accordance with the terms of this Indenture, (C)
having an aggregate Fair Market Value of less than $2,000,000 (or the equivalent
thereof in any other  currency) in any given fiscal year, (D) by the Parent or a
Restricted  Parent  Subsidiary to a Person who is not an Affiliate of the Parent
in  exchange  for  Telecommunications  Assets  (or not less  than 66 2/3% of the
outstanding Voting Stock of a Person that becomes a Restricted  Subsidiary,  the
assets of which  consist  primarily  of  Telecommunications  Assets)  or related
telecommunications  services  where,  in the good faith judgment of the board of
directors of the Parent evidenced by a board  resolution,  the Fair Market Value
of such Telecommunications Assets (or such Voting Stock) or services so received
is at least equal to the Fair Market Value of the properties or assets  disposed
of or, if less, the difference is received by the Parent in cash in an amount at
least  equal  to  such  difference,   (E)  constituting   Capital  Stock  of  an
Unrestricted  Subsidiary or other  Investment  that was permitted  under Section
1012 of the Indenture when made,  (F)  constituting  accounts  receivable of the
Parent or a Restricted  Parent Subsidiary to an Accounts  Receivable  Subsidiary
or, in  consideration  of Fair Market  Value  thereof,  to Persons  that are not
Affiliates of the Parent or any Subsidiary of the Parent in the ordinary  course
of  business,  including  in  connection  with  financing  transactions,  (G) in
connection with a Sale-Leaseback  Transaction otherwise permitted to be incurred
under Section 1011 of the Indenture, (H) to a Permitted Telecommunications Joint
Venture  if such  transfer  of  properties  or  assets  is  permitted  under the
definition  of  "Permitted  Investments",  (I) in  connection  with a  Permitted
Telecommunications  Asset Sale or (J) to an Unrestricted Subsidiary if permitted
under Section 1012 of the Indenture.

              "BOARD OF  DIRECTORS"  means (i) either the board of  directors of
the  Company or any duly  authorized  committee  of that  board,  when used with
respect to the  Company,  or (ii) either the board of directors of the Parent or
any duly  authorized  committee  of that  board,  when used with  respect to the
Parent.

              "BOARD  RESOLUTION" means a copy of a resolution  certified by the
Secretary or an  Assistant  Secretary of the Parent to have been duly adopted by
the Board of  Directors  of the Parent and to be in full force and effect on the
day of such certification and delivered to the Trustee; unless used with respect
to the Company when  references to the "Parent" in the preceding  sentence shall
be replaced by references to the "Company".

              "CASH EQUIVALENTS" means:

(a) any evidence of  Indebtedness  with a maturity of 180 days or less issued or
directly and fully  guaranteed or insured by the United States of America or any
agency or  instrumentality  thereof  (PROVIDED that the full faith and credit of
the United States of America is pledged in support thereof);

(b)  certificates of deposit or acceptances  with a maturity of 180 days or less
of any financial  institution that is a member of the Federal Reserve System, in
each case having combined capital and surplus and undivided  profits of not less
than $500,000,000;

(c) commercial paper with a maturity of 180 days or less issued by a corporation
that is not an affiliate  of the Parent and is  organized  under the laws of any
state of the  United  States  and  rated at least  A-1 by S&P or at least P-1 by
Moody's; and

(d) money market mutual funds that invest  substantially  all of their assets in
securities of the type described in the preceding clauses.

              "CHANGE OF CONTROL" means any of the following events:

(a) any "person" or "group" (as such terms are used in Sections  13(d) and 14(d)
of  the  Exchange  Act),  other  than  Permitted  Holders,  is  or  becomes  the
"beneficial  owner" (as defined in Rules 13d-3 and 13d-5 under the Exchange Act,
except  that a Person  shall be deemed  to have  "beneficial  ownership"  of all
securities  that such  Person has the right to  acquire,  whether  such right is
exercisable  immediately  or only  after  the  passage  of  time),  directly  or
indirectly,  of more  than  50% of the  total  outstanding  Voting  Stock of the
Company or of the Parent.

(b) the Company or the Parent consolidates with, or merges with or into, another
Person  or  conveys,   transfers,   leases  or  otherwise  disposes  of  all  or
substantially all of its assets to any Person, or any Person  consolidates with,
or merges with or into, the Company or the Parent, in any such event pursuant to
a transaction in which the outstanding Voting Stock of the Company or the Parent
(as the case may be) is converted  into or  exchanged  for cash,  securities  or
other property, other than any such transaction (i) where the outstanding Voting
Stock of the  Company  or the Parent  (as the case may be) is not  converted  or
exchanged  at all  (except  to the extent  necessary  to reflect a change in the
jurisdiction of incorporation of the Company or the Parent (as the case may be))
or is converted  into or exchanged  for (A) Voting Stock (other than  Redeemable
Capital  Stock)  of  the  surviving  or  transferee  corporation  or  (B)  cash,
securities and other property (other than Capital Stock of the Surviving Entity)
in an  amount  that  could be paid by the  Parent  as a  Restricted  Payment  as
described  in Section  1012 of the  Indenture  in the event of a  conversion  or
exchange  by the  Parent or that could be paid by the  Company  as a  Restricted
Payment  as  described  in  Section  1012 of the  Indenture  in the  event  of a
conversion  or  exchange  by  the  Company  and  (ii)  immediately   after  such
transaction,  no "person"  or "group" (as such terms are used in Sections  13(d)
and 14(d) of the Exchange Act), other than Permitted Holders, is the "beneficial
owner" (as defined in Rules 13d-3 and 13d-5 under the Exchange Act,  except that
a Person shall be deemed to have  "beneficial  ownership" of all securities that
such  Person  has the  right to  acquire,  whether  such  right  is  exercisable
immediately or only after the passage of time), directly or indirectly,  of more
than 50% of the total  outstanding  Voting Stock of the  surviving or transferee
corporation;

(c) during any consecutive two-year period,  individuals who at the beginning of
such period  constituted  the Board of  Directors of the Company or the Board of
Directors of the Parent  (together with any new directors whose election to such
Board of Directors,  or whose nomination for election by the stockholders of the
Company or the Parent (as the case may be) was  approved by a vote of 66 2/3% of
the directors then still in office who were either directors at the beginning of
such period or whose  election or  nomination  for  election was  previously  so
approved)  cease  for any  reason  to  constitute  a  majority  of the  Board of
Directors of the Company or the Parent (as the case may be) then in office; or

(d) the Company is  liquidated or dissolved or adopts a plan of  liquidation  or
dissolution   other  than  in  a  transaction   which  constitutes  a  Permitted
Transaction,  or the  Parent  is  liquidated  or  dissolved  or adopts a plan of
liquidation or dissolution  other than in a transaction  which complies with the
provisions of Article 8 of the Indenture.

              "CONSOLIDATED  ADJUSTED  NET INCOME"  means,  with  respect to any
period,  the  consolidated  net income (or loss) of all Restricted  Entities for
such period as  determined  in  accordance  with GAAP,  adjusted  by  excluding,
without duplication:

(a) any net after-tax  extraordinary gains or losses (less all fees and expenses
relating thereto);

(b) any net  after-tax  gains or  losses  (less all fees and  expenses  relating
thereto) attributable to asset dispositions other than in the ordinary course of
business;

(c) the portion of net income (or loss) of any Person  (other than a  Restricted
Entity), including Unrestricted Subsidiaries, in which any Restricted Entity has
an ownership interest,  except to the extent of the amount of dividends or other
distributions  actually  paid to any  Restricted  Entity  in cash  dividends  or
distributions during such period;

(d) the net income (or loss) of any Person  combined with any Restricted  Entity
on a "pooling of interests"  basis  attributable to any period prior to the date
of combination;

(e) the net income of the  Company or any  Restricted  Subsidiary  to the extent
that the  declaration  or payment of dividends or similar  distributions  by the
Company  or such  Restricted  Subsidiary  is not at the  date  of  determination
permitted,  directly or indirectly,  by operation of the terms of its charter or
any  agreement,   instrument,   judgment,   decree,   order,  statute,  rule  or
governmental  regulation applicable to the Company or such Restricted Subsidiary
or its stockholders (except, for purposes of determining compliance with Section
1011 of the Indenture, any restriction permitted under clause (vii) or (viii) of
Section 1018 of the Indenture; and

(f) any net income (or loss) from the Company or any Restricted  Subsidiary that
was an  Unrestricted  Subsidiary  at any time during such period  other than any
amounts actually received from the Company or such Restricted Subsidiary.

              "CONSOLIDATED INDEBTEDNESS" means, with respect to any period, the
aggregate amount of Indebtedness of all Restricted  Entities  outstanding at the
date of determination  as determined on a consolidated  basis in accordance with
GAAP.

              "CONSOLIDATED  INDEBTEDNESS  TO  CONSOLIDATED  OPERATING CASH FLOW
RATIO"  means,  at any date of  determination,  the  ratio  of (i)  Consolidated
Indebtedness of all Restricted Entities to (ii) Consolidated Operating Cash Flow
of all  Restricted  Entities  for the two  preceding  fiscal  quarters for which
financial   information   is  available   immediately   prior  to  the  date  of
determination,  multiplied  by  two;  PROVIDED  further  that  any  Indebtedness
incurred or retired by any Restricted  Entity during the fiscal quarter in which
the transaction date occurs shall be calculated as if such  Indebtedness were so
incurred or retired on the first day of the fiscal  quarter in which the date of
determination occurs (PROVIDED further that, in making any such computation, the
aggregate amount of Indebtedness  under any revolving credit or similar facility
shall be deemed to include an amount of funds equal to the average daily balance
of such  Indebtedness  during  such two fiscal  quarter  period);  and  PROVIDED
further that (x) if the  transaction  giving rise to the need to  calculate  the
Consolidated  Indebtedness to Consolidated  Operating Cash Flow Ratio would have
the effect of increasing or decreasing Consolidated Indebtedness or Consolidated
Operating Cash Flow in the future,  Consolidated  Indebtedness  and Consolidated
Operating  Cash  Flow  shall  be  calculated  on a pro  forma  basis  as if such
transaction  had  occurred  on the first day of such two fiscal  quarter  period
preceding  the date of  determination;  (y) if during  such two  fiscal  quarter
period, any Restricted Entity shall have engaged in any Asset Sale in respect of
any  company,  entity or  business,  Consolidated  Operating  Cash Flow for such
period shall be reduced by an amount equal to the  Consolidated  Operating  Cash
Flow  (if  positive),  or  increased  by an  amount  equal  to the  Consolidated
Operating Cash Flow (if negative),  directly attributable to the company, entity
or business that is the subject of such Asset Sale and any related retirement of
Indebtedness  as if such Asset Sale and any related  retirement of  Indebtedness
had occurred on the first day of such  period;  or (z) if during such two fiscal
quarter period any Restricted Entity shall have acquired any company,  entity or
business,  Consolidated  Operating  Cash Flow shall be calculated on a pro forma
basis as if such acquisition and any related financing had occurred on the first
day of such period.

              "CONSOLIDATED  INTEREST  EXPENSE" means,  for any period,  without
duplication, the sum of:

(a) the  consolidated  interest  expense  of all  Restricted  Entities  for such
period,  including  (i)  amortization  of debt  discount,  (ii)  the net cost of
Interest  Rate  Agreements  (including  amortization  of  discounts),  (iii) the
interest portion of any deferred payment obligation,  (iv) accrued interest, (v)
the consolidated amount of any interest capitalized by the Company or the Parent
and (vi) amortization of debt issuance costs; plus

(b) the consolidated  interest component of Capitalized Lease Obligations of all
Restricted  Entities paid, accrued and/or scheduled to be paid or accrued during
such period;  excluding,  however, any amount of such interest of any Restricted
Subsidiary  if the net income of such  Restricted  Subsidiary is excluded in the
calculation of  Consolidated  Adjusted Net Income  pursuant to clause (e) of the
definition  thereof (but only in the same  proportion  as the net income of such
Restricted  Subsidiary is excluded from the calculation of Consolidated Adjusted
Net Income pursuant to clause (e) of the definition  thereof);  PROVIDED that in
making such computation,  (x) the Consolidated  Interest Expense attributable to
interest  on any  Indebtedness  computed  on a pro forma basis and (A) bearing a
floating interest rate shall be computed as if the rate in effect on the date of
computation had been the applicable rate for the entire period and (B) which was
not  outstanding  during the period for which the  computation is being made but
which bears, at the option of the Parent,  a fixed or floating rate of interest,
shall be computed by applying,  at the option of the Parent, either the fixed or
floating rate, (y) the Consolidated Interest Expense attributable to interest on
any Indebtedness under a revolving credit facility computed on a pro forma basis
shall be computed  based upon the  average  daily  balance of such  Indebtedness
during the  applicable  period  and (z) the  interest  rate with  respect to any
Indebtedness  covered by an Interest  Rate  Agreement  shall be deemed to be the
effective  interest  rate with  respect to such  Indebtedness  after taking into
account such Interest Rate Agreement.

              "CONSOLIDATED  OPERATING  CASH FLOW"  means,  with  respect to any
period, the Consolidated Adjusted Net Income of all Restricted Entities for such
period:

(a) increased by (to the extent deducted in computing  Consolidated Adjusted Net
Income)  the  sum of  (i)  the  Consolidated  Tax  Expense  of  such  Restricted
Subsidiaries as are subject to the immediately  preceding  parenthetical  clause
for such period  (other than taxes  attributable  to  extraordinary,  unusual or
non-recurring  gains or  losses);  (ii)  Consolidated  Interest  Expense  of all
Restricted  Entities  for such  period;  (iii)  depreciation  of all  Restricted
Entities for such period,  determined on a consolidated basis in accordance with
GAAP; (iv) amortization of all Restricted  Entities for such period,  determined
on a  consolidated  basis in accordance  with GAAP;  and (v) any other  non-cash
charges  that were  deducted  in  computing  Consolidated  Adjusted  Net  Income
(excluding  any non-cash  charge  which  requires an accrual or reserve for cash
charges for any future  period) of the  Restricted  Entities  for such period in
accordance with GAAP; and

(b)  decreased  by any  non-cash  gains of the  Restricted  Entities  that  were
included in computing Consolidated Adjusted Net Income.

              "CONSOLIDATED  TAX EXPENSE" means,  for any period,  the provision
for U.S.  federal,  state,  provincial,  local and foreign  income  taxes of all
Restricted  Entities for such period as  determined on a  consolidated  basis in
accordance with GAAP.

              "CREDIT  FACILITIES"  means, with respect to a Restricted  Entity,
one or more debt facilities or commercial  paper  facilities with banks or other
institutional  lenders  providing  for  revolving  credit  loans,  terms  loans,
receivables financing (including through the sale of receivables to such lenders
or to special  purpose  entities formed to borrow from such lenders against such
receivables) or letters of credit, in each case, as amended, restated, modified,
renewed, refunded, replaced or refinanced in whole or in part from time to time.

              "CURRENCY   AGREEMENTS"   means  any  spot  or  forward   exchange
agreements  and  currency  swap,  currency  option  or other  similar  financial
agreements or arrangements entered into by the any Restricted Entity.

              "DEBT  SECURITIES"  means  any  debt  securities   (including  any
Guarantee of such securities) issued by any Restricted Entity in connection with
a public offering (whether or not underwritten) or a private placement (PROVIDED
that such private  placement is  underwritten  for resale pursuant to Rule 144A,
Regulation S or otherwise under the Securities Act or sold on an agency basis by
a broker-dealer or one of its Affiliates to 10 or more non-affiliated beneficial
holders);  it being understood that the term "Debt Securities" shall not include
any evidence of indebtedness under the Vendor Credit Facility,  any financing by
the Company or a Restricted  Subsidiary similar to the Vendor Credit Facility or
any Credit Facility or other  commercial bank  borrowings,  any vendor equipment
financing  facility or any similar  financings,  recourse transfers of financial
assets,  capital  leases or other types of  borrowings  incurred in a manner not
customarily viewed as a "securities offering".

              "DISINTERESTED DIRECTOR" means, with respect to any transaction or
series of transactions in respect of which the board of directors of the Company
is required to deliver a resolution  thereof under this  Indenture,  a member of
the board of directors  of the Company who does not have any material  direct or
indirect  financial interest in or with respect to such transaction or series of
transactions,  and with respect to any  transaction or series of transactions in
respect of which the board of  directors  of the Parent is required to deliver a
resolution  thereof under this Indenture,  a member of the board of directors of
the Parent who does not have any material direct or indirect  financial interest
in or with respect to such transaction or series of  transactions.  For purposes
of this definition, no Person shall be deemed not to be a Disinterested Director
solely because such Person or an Affiliate of such Person holds or  beneficially
owns  Capital  Stock of the  Company,  the  Parent  or any of  their  Restricted
Subsidiaries.

              "ESCROW ACCOUNT" means the account established with the Trustee in
its name pursuant to the terms of the Original Pledge  Agreement for the deposit
of Pledged Securities.

              "EVENT  OF  DEFAULT",  means  any  one  of  the  following  events
(whatever the reason for such Event of Default and whether it shall be voluntary
or  involuntary  or be effected by operation of law or pursuant to any judgment,
decree  or  order  of  any  court  or  any  order,  rule  or  regulation  of any
administrative or governmental body):

(a) default in the  payment of any  interest on any Note when it becomes due and
payable,  and  continuance  of  such  default  for a  period  of 30 days or more
(provided  that such 30-day grace period  shall not be  applicable  to the first
four interest payments due on the Notes);

(b) default in the payment of the principal of (or premium, if any, on) any Note
at its Maturity (upon acceleration,  optional  redemption,  required purchase or
otherwise);

(c) default in the performance,  or breach,  of any covenant or agreement of the
Company or of the Parent  contained in this  Indenture  (other than a default in
the  performance,  or breach,  of a covenant or agreement  which is specifically
dealt with in the immediately  preceding clause (a) or (b) or in clause (B), (C)
or (D) of this  clause  (c)) and  continuance  of such  default  or breach for a
period of 30 days after  written  notice shall have been given to the Company or
the Parent (as the case may be) by the  Trustee or to the  Company or the Parent
and the Trustee by the Holders of at least 25% in aggregate  principal amount of
the Notes then  Outstanding;  (B)  default in the  performance  or breach of the
provisions  of Section  1017;  (C) default in the  performance  or breach of the
provisions of Article  Eight;  and (D) default in the  performance  or breach of
Section 1010;

(d) (A) one or more defaults in the payment of principal of or premium,  if any,
or interest  on  Indebtedness  of the  Company or the Parent or any  Significant
Subsidiary aggregating $7,500,000 or more, when the same becomes due and payable
at the  Stated  Maturity  thereof,  and such  default  or  defaults  shall  have
continued  after any  applicable  grace  period and shall not have been cured or
waived or (B)  Indebtedness  of the  Company  or the  Parent or any  Significant
Subsidiary  aggregating  $7,500,000  or more  shall  have  been  accelerated  or
otherwise  declared  due and payable,  or required to be prepaid or  repurchased
(other than by regularly  scheduled  required  prepayment),  prior to the Stated
Maturity thereof;

(e) one or more final  judgments,  orders or decrees of any court or  regulatory
agency  shall be rendered  against the Company or the Parent or any  Significant
Subsidiary  or their  respective  properties  for the  payment of money,  either
individually or in an aggregate  amount,  in excess of $7,500,000 and either (A)
an  enforcement  proceeding  shall have been commenced by any creditor upon such
judgment or order or (B) there shall have been a period of 30 days during  which
a stay of enforcement  of such judgment or order,  by reason of a pending appeal
or otherwise,  was not in effect;  (f) the entry of a decree or order by a court
having  jurisdiction in the premises  adjudging the Company or the Parent or any
Significant Subsidiary as bankrupt or insolvent,  or approving as properly filed
a petition seeking reorganization,  arrangement, adjustment or composition of or
in respect of the Company or the Parent or any Significant  Subsidiary under the
Federal  Bankruptcy  Code or any  other  applicable  federal  or state  law,  or
appointing a receiver,  liquidator,  assignee,  trustee,  sequestrator (or other
similar official) of the Company or the Parent or any Significant  Subsidiary or
of  any  substantial  part  of its  property,  or  ordering  the  winding  up or
liquidation  of its  affairs,  and the  continuance  of any such decree or order
unstayed and in effect for a period of 90 consecutive days;

(g) the institution by the Company or the Parent or any  Significant  Subsidiary
of proceedings  to be adjudicated a bankrupt or insolvent,  or the consent by it
to the  institution of bankruptcy or insolvency  proceedings  against it, or the
filing by it of a petition or answer or consent seeking reorganization or relief
under the Federal  Bankruptcy Code or any other applicable federal or state law,
or the consent by it to the filing of any such petition or to the appointment of
a  receiver,  liquidator,  assignee,  trustee,  sequestrator  (or other  similar
official) of the Company or the Parent or any  Significant  Subsidiary or of any
substantial  part of its property,  or the making by it of an assignment for the
benefit of creditors,  or the admission by it in writing of its inability to pay
its debts generally as they become due;

(h) the Amended and  Restated  Pledge  Agreement  ceases to be in full force and
effect before payment in full of the obligations thereunder; or

              the Guarantee ceases to be in full force and effect before payment
in full of the obligations thereunder.

              "FAIR MARKET VALUE" means,  with respect to any asset or property,
the sale value that would be obtained in an arms' length transaction  between an
informed  and willing  seller  under no  compulsion  to sell and an informed and
willing  buyer under no  compulsion to buy.  Unless  otherwise  specified in the
Indenture,  Fair Market Value shall be  determined  by the Board of Directors of
the Parent  acting in good faith and as of the date on which such  determination
is made.

              "GUARANTEE"  means the guarantee dated as of March 30, 2000 by the
Parent for the benefit of each of the Holders of the  outstanding  Notes, a copy
of which is attached to this Supplemental Indenture as Exhibit 1.

              "INCUMBENT"  means any  railroad,  utility,  governmental  entity,
pipeline or other  licensed  owner (which  ownership is  determined  immediately
prior to any transaction with a Restricted Entity) of Telecommunications  Assets
to be used in the network of the Company or the Parent  pursuant to an Incumbent
Agreement  (and any subsidiary or affiliate of such Person that is a party to an
Incumbent Agreement for the sole purpose of receiving payments from a Restricted
Entity pursuant to such agreement).

              "INCUMBENT  AGREEMENT" means an agreement between an Incumbent and
a  Restricted  Entity  pursuant to which,  among other  things,  such  Incumbent
receives  a  payment  equal  to  such  Restricted  Entity's  revenues,  if  any,
attributable,  in whole or in part, to Telecommunications  Assets transferred or
leased,  or with  respect  to  which a right of use has  been  granted,  by such
Incumbent  such  Restricted  Entity  and  upon or with  respect  to  which  such
Restricted  Entity has  constructed  or intends  to  construct  a portion of its
network.

              "INCUR" OR "INCUR"  means,  with respect to any  Indebtedness,  to
incur,  create,  issue,  assume,  guarantee  or  otherwise  become  directly  or
indirectly  liable or responsible for the payment of, or otherwise  incur,  such
Indebtedness,  contingently  or otherwise;  PROVIDED that neither the accrual of
interest nor the  accretion of original  issue  discount  shall be considered an
incurrence of Indebtedness.  With respect to Indebtedness to be borrowed under a
binding commitment  previously entered into that provides for the Company or the
Parent to Incur Indebtedness on a revolving basis, the Company or the Parent (as
the case may be) shall be deemed to have Incurred the greater of:

(a)      the Indebtedness actually Incurred; or

(b) all or a  portion  of the  amount  of such  unborrowed  commitment  that the
Company  or the  Parent  (as the case may be)  shall  have so  designated  to be
Incurred in an Officer's Certificate delivered to the Trustee (in which case the
Company  or the  Parent  (as the case may be) shall not be deemed to incur  such
unborrowed amount at the time or times it is actually borrowed).

              "INDEBTEDNESS"  means,  with  respect to any Person at any date of
determination, without
duplication:

(a) all liabilities,  contingent or otherwise,  of such Person: (i) for borrowed
money (including overdrafts),  (ii) in connection with any letters of credit and
acceptances issued under letter of credit facilities,  acceptance  facilities or
other  similar  facilities  (including  reimbursement  obligations  with respect
thereto),   (iii)  evidenced  by  bonds,  notes,  debentures  or  other  similar
instruments,  (iv) for the  deferred  and unpaid  purchase  price of property or
services  or  created  or  arising  under any  conditional  sale or other  title
retention  agreement with respect to property acquired by such Person or (v) for
Capitalized Lease Obligations (including any Sale-Leaseback Transaction);

(b) all  obligations  of such  Person  under  or in  respect  of  Interest  Rate
Agreements and Currency Agreements;

(c) all  Indebtedness  referred  to in (but not  excluded  from)  the  preceding
clauses of other  Persons and all  dividends  of other  Persons,  the payment of
which is  secured  by (or for  which  the  holder  of such  Indebtedness  has an
existing right, contingent or otherwise, to be secured by) any Lien upon or with
respect to any property  (including  accounts and contract rights) owned by such
Person,  whether or not such Person has assumed or become liable for the payment
of such  Indebtedness  (the  amount of such  obligation  being  deemed to be the
lesser  of (i) the Fair  Market  Value of such  property  or asset  and (ii) the
amount of such obligation so secured);

(d) all guarantees by such Person of Indebtedness referred to in this definition
of any other Person; and

(e) all  Redeemable  Stock of such Person valued at the greater of its voluntary
or  involuntary   maximum  fixed  repurchase  price,  plus  accrued  and  unpaid
dividends.

              The amount of  Indebtedness  of any Person at any date will be the
outstanding balance at such date (or, in the case of a revolving credit or other
similar  facility,  the total amount of funds  outstanding  and/or designated as
incurred and certified by an officer of the Parent to have been Incurred on such
date pursuant to clause (b) of the last  sentence of the  definition of "Incur")
of all  unconditional  obligations  as  described  above  and,  with  respect to
contingent  obligations,  the  maximum  liability  upon  the  occurrence  of the
contingency  giving  rise  to the  obligation;  PROVIDED  (i)  that  the  amount
outstanding at any time of any Indebtedness  issued with original issue discount
equals  the face  amount of such  Indebtedness  less the  remaining  unamortized
portion of the  original  issue  discount of such  Indebtedness  at such time as
determined in conformity with GAAP and (ii) that Indebtedness  shall not include
any liability for U.S. federal, state, local or other taxes owed by such Person.
For purposes  hereof,  the "maximum  fixed  repurchase  price" of any Redeemable
Capital Stock which does not have a fixed  repurchase  price shall be calculated
in  accordance  with  the  terms  of such  Redeemable  Capital  Stock as if such
Redeemable  Capital Stock were purchased on any date on which Indebtedness shall
be required to be determined  pursuant to this  Indenture,  and if such price is
based upon,  or measured  by, the Fair Market Value of such  Redeemable  Capital
Stock,  such Fair Market Value will be  determined in good faith by the board of
directors of the issuer of such Redeemable  Capital Stock.  Notwithstanding  the
foregoing, trade accounts and accrued liabilities arising in the ordinary course
of business will not be considered Indebtedness for purposes of this definition.

                           "INVESTED CAPITAL" means the sum of:

(a) 75% of the  aggregate  net cash  proceeds  received by the Company  from the
issuance of (or capital  contributions  with respect to) any  Qualified  Capital
Stock of the Company  subsequent  to the Issue  Date,  or received by the Parent
from the issuance of (or capital contribution with respect to) Qualified Capital
Stock of the Parent subsequent to the Amendment Date, other than the Issuance of
Qualified Capital Stock to the Company or to a Restricted Subsidiary; and

(b) 75% of the aggregate net proceeds from sales of Redeemable  Capital Stock of
the  Company  or the  Parent  or  Indebtedness  of  the  Company  or the  Parent
convertible  into  Qualified  Capital Stock of the Company or the Parent (as the
case may be),  in each case upon such  redemption  or  conversion  thereof  into
Qualified Capital Stock.

              "INVESTMENT"  means, with respect to the Parent's or the Company's
investment  with any  Person,  any  direct or  indirect  advance,  loan or other
extension of credit or capital contribution to (by means of any transfer of cash
or other  property  to others or any payment  for  property or services  for the
account or use of others) or any  purchase,  acquisition  or  ownership  by such
Person of any Capital Stock,  bonds,  notes,  debentures or other  securities or
evidences  of  Indebtedness  issued or owned by, any other  Person and all other
items that would be classified  as  investments  on a balance sheet  prepared in
accordance with GAAP. In addition,  the portion  (proportionate to the Company's
or the Parent's equity interest in such  Subsidiary) of the Fair Market Value of
the net assets of any Subsidiary at the time that such  Subsidiary is designated
an Unrestricted  Subsidiary  shall be deemed to be an  "Investment"  made by the
Company or the Parent (as the case may be) in such  Unrestricted  Subsidiary  at
such time and the portion (proportionate to the Company's or the Parent's equity
interest in such  Subsidiary)  of the Fair Market Value of the net assets of any
Subsidiary  at  the  time  that  such  Subsidiary  is  designated  a  Restricted
Subsidiary   shall  be  considered  a  reduction  in  outstanding   Investments.
"Investments"   shall  exclude   extensions  of  trade  credit  on  commercially
reasonable terms in accordance with normal trade practices.

                           "NET CASH PROCEEDS" means:

(a) with respect to any Asset Sale, the proceeds  thereof in the form of cash or
Cash Equivalents,  including payments in respect of deferred payment obligations
when  received in the form of, or stock or other  assets  when  disposed of for,
cash or Cash  Equivalents  (except  to the  extent  that  such  obligations  are
financed or sold with recourse to any Restricted  Entity),  net of (i) brokerage
commissions  and other fees and expenses  (including  fees and expenses of legal
counsel and investment  banks) related to such Asset Sale,  (ii)  provisions for
all taxes payable as a result of such Asset Sale,  (iii) payments made to retire
Indebtedness  where  payment  of such  Indebtedness  is secured by the assets or
properties which are the subject of such Asset Sale, (iv) amounts required to be
paid to any  Person  (other  than any  Restricted  Entity)  owning a  beneficial
interest in the assets subject to the Asset Sale and (v) appropriate  amounts to
be PROVIDED by any Restricted  Entity, as the case may be, as a reserve required
in accordance with GAAP against any liabilities  associated with such Asset Sale
and retained by any Restricted  Entity after such Asset Sale,  including pension
and  other   post-employment   benefit   liabilities,   liabilities  related  to
environmental  matters and  liabilities  under any  indemnification  obligations
associated with such Asset Sale, all as reflected in an Officers' Certificate of
the Parent or the Company, as the case may be, delivered to the Trustee; and

(b) with respect to any issuance or sale of Capital  Stock or options,  warrants
or rights to purchase  Capital Stock, or debt  securities or Redeemable  Capital
Stock that has been converted into or exchanged for Qualified  Capital Stock, as
referred to in Section 1012(b)(3),  the proceeds of such issuance or sale in the
form of cash or Cash  Equivalents,  including  payments  in respect of  deferred
payment  obligations when received in the form of, or stock or other assets when
disposed  of for,  cash or Cash  Equivalents  (except  to the  extent  that such
obligations  are financed or sold with recourse to the Parent or any  Subsidiary
of the  Parent),  net of fees,  commissions  and expenses  actually  incurred in
connection  with such  issuance  or sale and net of taxes  paid or  payable as a
result thereof.

              "NEW PLEDGED  SECURITIES"  means the  securities  purchased by the
Company  to be  deposited  in the  Escrow  Account  as  security  for the  fifth
scheduled interest payment on the Notes pursuant to the Indenture.

              "OFFICERS'   CERTIFICATE"   means  a  certificate  signed  by  the
Chairman,  the CEO,  the  President  or any  executive  vice  president  or vice
president,  and by the Treasurer,  an assistant  treasurer,  the Secretary or an
assistant secretary of the Company (when used with respect to the Company) or of
the Parent (when used with respect to the Parent),  and, in each case, delivered
to the Trustee.

              "PARENT"  means  Pathnet  Telecommunications,  Inc. a  corporation
organized and existing under the laws of the state of Delaware.

              "PARENT  REQUEST"  or "PARENT  ORDER"  means a written  request or
order  signed in the name of the  Parent by its  Chairman,  its Chief  Executive
Officer ("CEO"),  its President,  any executive vice president or vice president
or the Treasurer and delivered to the Trustee.

                           "PERMITTED INDEBTEDNESS" means:

(a)  Indebtedness of the Company pursuant to the Notes or of the Parent pursuant
to the Guarantee;

(b) Indebtedness of the Company or any Restricted Company Subsidiary outstanding
on the  Issue  Date or  Indebtedness  of the  Parent  or any  Restricted  Parent
Subsidiary outstanding on the Amendment Date;

(c) Indebtedness of the Company or the Parent owing to any Restricted Subsidiary
or of the Parent owing to the Company (but only so long as such  Indebtedness is
held by such  Restricted  Subsidiary)  or by the  Company,  as the  case may be;
PROVIDED that any Indebtedness of the Company or the Parent (as the case may be)
owing to any such Restricted  Subsidiary or the Company is subordinated in right
of payment  from and after such time as the Notes  shall  become due and payable
(whether at Stated  Maturity,  by  acceleration or otherwise) to the payment and
performance by the Company or the Parent (as the case may be) of its obligations
under the Notes or the  Guarantee;  and PROVIDED  further  that any  transaction
pursuant  to which  any  Restricted  Subsidiary  or the  Company  to which  such
Indebtedness is owed ceases to be a Restricted Subsidiary or, in the case of the
Company,  a Subsidiary  of the Parent,  shall be deemed to be an  incurrence  of
Indebtedness  by the Parent or the Company that is not  permitted by this clause
(c);

(d)  Indebtedness  of any  Restricted  Subsidiary  owing to the  Company  or the
Parent, of the Company owing to the Parent or of any Restricted Subsidiary owing
to another Restricted Subsidiary;

(e) Indebtedness of any Restricted  Entity in respect of performance,  surety or
appeal  bonds or under  letter of credit  facilities  PROVIDED  in the  ordinary
course of business and, in the case of letters of credit,  under which  recourse
to the  Company or the Parent is limited to the cash  securing  such  letters of
credit;

(f) Indebtedness of any Restricted Entity under Currency Agreements and Interest
Rate Agreements  entered into in the ordinary course of business;  PROVIDED that
such agreements are designed to protect any Restricted Entity against, or manage
exposure  to,  fluctuations  in  currency  exchange  rates and  interest  rates,
respectively,  and that such agreements do not increase the  Indebtedness of the
obligor  outstanding  at any time  other  than as a result  of  fluctuations  in
foreign  currency  exchange  rates  or  interest  rates  or by  reason  of fees,
indemnities and compensation payable thereunder;

(g) Telecommunications Indebtedness and any Indebtedness issued in exchange for,
or  the  net  proceeds  of  which  are  used  to   refinance  or  refund,   such
Telecommunications  Indebtedness  in an  amount  not to  exceed  the  amount  so
refinanced or refunded (plus premiums, accrued interest, and reasonable fees and
expenses);

(h) Indebtedness of any Restricted Entity consisting of guarantees,  indemnities
or  obligations  in connection  with (1)  Telecommunications  Indebtedness,  (2)
Indebtedness permitted under clause (j) or (m) of this "Permitted  Indebtedness"
definition or (3) in respect of purchase price  adjustments  in connection  with
the acquisition of or disposition of assets, including shares of Capital Stock;

(i) Indebtedness of the Company or the Parent (or  consolidated  Indebtedness of
the Company and the Parent) not to exceed,  at any time  outstanding,  2.0 times
the Net Cash  Proceeds  from the issuance  and sale after the Issue Date,  other
than an issuance and sale by the Company to a Restricted  Subsidiary or issuance
and sale by the  Parent  to the  Company  or to any  Restricted  Subsidiary,  of
Qualified  Capital  Stock of the Company or the  Parent,  to the extent such Net
Cash Proceeds have not been used to make Restricted  Payments pursuant to clause
(a)(3)(B) or clauses  (b)(ii) and (iii) of Section 1012 or to make any Permitted
Investments  under  clause  (h)  of the  definition  of  Permitted  Investments;
PROVIDED that such  Indebtedness does not mature prior to the Stated Maturity of
the Notes and has an Average Life longer than the Notes;

(j) Indebtedness of any Restricted  Entity under one or more Credit  Facilities;
PROVIDED  that the  aggregate  principal  amount  of any  Indebtedness  incurred
pursuant to this clause (j) (including any amounts  refinanced or refunded under
this clause (j)) does not exceed at any time  outstanding the greater of (x) 80%
of eligible consolidated accounts receivable of the Company and the Parent as of
the last  fiscal  quarter for which  financial  statements  are  prepared or (y)
$50,000,000 (or the equivalent thereof in one or more foreign  currencies);  and
any  Indebtedness  issued in exchange for, or the net proceeds of which are used
to refinance or refund, Indebtedness incurred under this clause (j) in an amount
not to exceed the amount so  refinanced  or  refunded  (plus  premiums,  accrued
interest, and reasonable fees and expenses);

(k)  Indebtedness  of any  Restricted  Entity issued in exchange for, or the net
proceeds of which are used to refinance or refund, then-outstanding Indebtedness
of any Restricted  Entity  incurred under the ratio test set forth in clause (i)
or (ii) of Section 1011 or under  clauses (b) through  (f),  (h), (i) and (m) of
this definition of "Permitted  Indebtedness," and any refinancings thereof in an
amount  not to exceed the  amount so  refinanced  or  refunded  (plus  premiums,
accrued  interest,  and reasonable  fees and  expenses);  PROVIDED that such new
Indebtedness  shall only be  permitted  under this clause (k) if (A) in case the
Notes are refinanced in part, or the Indebtedness to be refinanced ranks equally
with the  Notes,  such new  Indebtedness,  by its  terms or by the  terms of any
agreement or  instrument  pursuant to which such new  Indebtedness  is issued or
remains  outstanding  is expressly  made to rank equally with, or subordinate in
right of payment to, the remaining  Notes,  (B) in case the  Indebtedness  to be
refinanced  is  subordinated  in  right  of  payment  to  the  Notes,  such  new
Indebtedness,  by its  terms or by the  terms  of any  agreement  or  instrument
pursuant  to which such new  Indebtedness  is issued or remains  outstanding  is
expressly made subordinate in right of payment to the Notes at least to the same
extent that the  Indebtedness  to be refinanced is subordinated to the Notes and
(C) such new  Indebtedness,  determined as of the date of incurrence of such new
Indebtedness,  does not mature prior to the Stated Maturity of the  Indebtedness
to be refinanced or refunded,  and the Average Life of such new  Indebtedness is
at  least  equal  to  the  remaining  Average  Life  of the  Indebtedness  being
refinanced or refunded;  PROVIDED  further that no  Indebtedness  incurred under
this clause (k) in exchange  for, or the proceeds of which  refinance or refund,
any  Indebtedness  incurred  under the ratio test set forth under  clause (i) or
(ii) of Section  1011 will mature  prior to the Stated  Maturity of the Notes or
have an Average Life shorter than the Notes;  PROVIDED  further that in no event
may  Indebtedness  of the  Company or the Parent be  refinanced  by means of any
Indebtedness of any Restricted Subsidiary (in the case of the Company) or of the
Company or any Restricted Subsidiary (in the case of the Parent) issued pursuant
to this clause (k);

(l)  Indebtedness  arising  by  reason  of the  recharacterization  of a sale of
accounts receivable to an Accounts Receivable Subsidiary; and

(m)  Indebtedness  of any Restricted  Entity in addition to that permitted to be
incurred  pursuant to clauses (a)  through (l) above in an  aggregate  principal
amount not in excess of $30,000,000  (or the  equivalent  thereof in one or more
foreign currencies) at any time outstanding.

                      "PERMITTED INVESTMENT" means any of the following:

(a) Investments in Cash Equivalents;  PROVIDED that the term "with a maturity of
180  days or  less"  in  clauses  (a),  (b) and (c) of the  definition  of "Cash
Equivalents"  is  changed  to "with a  maturity  of one  year or  less"  for the
purposes of this definition of "Permitted Investments" only;

(b)      Investments in any Restricted Entity;

(c)  Investments by any  Restricted  Entity in another Person if, as a result of
such Investment,  (i) such other Person becomes a Restricted Entity or (ii) such
other Person is merged or consolidated with or into, or transfers or conveys all
or substantially all of its assets to a Restricted Entity;

(d) Investments in the form of intercompany Indebtedness to the extent permitted
under clauses (c) and (d) of the definition of "Permitted Indebtedness;"

(e) Investments by the Company or any Restricted Company Subsidiary in existence
on the  Issue  Date and  Investments  by the  Parent  or any  Restricted  Parent
Subsidiary in existence on the Amendment Date;

(f) Investments in the Pledged  Securities to the extent required by the Amended
and Restated Pledge Agreement;

(g) Investments in an amount not to exceed $1,000,000 (or the equivalent thereof
in one or more foreign currencies) at any one time outstanding;

(h)  Investments  in an  aggregate  amount not to exceed the sum of (1) Invested
Capital, (2) the Fair Market Value of Qualified Capital Stock of the Company and
the Parent,  Redeemable  Capital Stock of the Company and the Parent convertible
into Qualified  Capital Stock of the Company or the Parent (as the case may be),
and  Indebtedness  of the  Company  and the Parent  convertible  into  Qualified
Capital  Stock of the  Company or the Parent (as the case may be), in the latter
two cases upon such  redemption or  conversion  thereof into  Qualified  Capital
Stock  of the  Company  or the  Parent  (as the  case  may  be),  issued  by any
Restricted  Entity as  consideration  for any such  Investments made pursuant to
this clause (h),  and (3) in the case of the  disposition  or  repayment  of any
Investment  made pursuant to this clause (h) after the Issue Date  (including by
redesignation  of an  Unrestricted  Subsidiary to a Restricted  Subsidiary),  an
amount  equal to the  lesser  of the  return of  capital  with  respect  to such
Investment and the initial amount of such  Investment,  in either case, less the
cost of the disposition of such Investment;  PROVIDED,  however, that the amount
of any  Permitted  Investments  under this clause (h) shall be excluded from the
computation of the amount of any Restricted Payment under Section 1012;

(i) Investments in trade receivables,  prepaid expenses,  negotiable instruments
held for collection and lease,  utility and worker's  compensation,  performance
and other similar deposits or escrow;

(j) Loans,  advances and  extensions of credit to employees made in the ordinary
course of business  of the  Company or the Parent not in excess of $500,000  (or
the equivalent thereof in one or more foreign currencies) in any fiscal year;

(k)  Bonds,  notes,  debentures  or  other  securities  evidencing  indebtedness
received as a result of Asset Sales permitted under Section 1017;

(l) Endorsements for collection or deposit in the ordinary course of business by
any Restricted Entity of bank drafts and similar  negotiable  instruments of any
other  person  received  as  payment  for  ordinary  course  of  business  trade
receivables;

(m)  Investments  deemed to have been made as a result of the  acquisition  of a
Person  that at the  time  of such  acquisition  held  instruments  constituting
Investments that were not acquired in  contemplation  of, or in connection with,
the acquisition of such Person;

(n) Investments in or acquisitions of Capital Stock, indebtedness, securities or
other property of Persons  (other than  Affiliates of the Company or the Parent)
received by the any Restricted  Entity in the bankruptcy or reorganization of or
by such Person or any  exchange of such  Investment  with the issuer  thereof or
taken in  settlement of or other  resolution of claim or disputes,  and, in each
case, extensions, modifications and renewals thereof;

(o)  Investments  in any Person to which  Telecommunications  Assets  used in an
Initial  System  have  been  transferred  and which  person  has  PROVIDED  to a
Restricted  Entity  the  right  to use  such  assets  pursuant  to an  Incumbent
Agreement;  PROVIDED  that,  in the good  faith  determination  of the  Board of
Directors of the Parent or the Company, as the case may be, the present value of
the future  payments  expected  to be  received  by the Company or the Parent in
respect of any such  Investment  plus the Fair Market Value of any capital stock
or other securities received in connection  therewith shall be at least equal to
the Fair Market Value of such Investment; and

(p)  Investments in one or more  Permitted  Telecommunications  Joint  Ventures;
PROVIDED that the total original cost of all such  Permitted  Telecommunications
Joint  Ventures  plus the  cost or Fair  Market  Value,  as  applicable,  of all
additions  thereto less the sum of all amounts received as returns thereon shall
not  exceed  $20,000,000  (or the  equivalent  thereof  in one or  more  foreign
currencies).

                      "PERMITTED LIENS" means:

(a) Liens  existing on the Issue Date,  when used with respect to the Company or
any Restricted Company Subsidiary, or Liens existing on the Amendment Date, when
used with respect to the Parent or any Restricted Parent Subsidiary;

(b) Liens on any property or assets of the Company or any Restricted  Subsidiary
granted in favor of any Restricted Entity;

(c) Liens on any property or assets of the Company or any Restricted  Subsidiary
securing the Notes or the Guarantee;

(d) any interest or title of a lessor under any Capitalized  Lease Obligation or
operating lease permitted by this Indenture;

(e) Liens  securing  Indebtedness  incurred under clauses (g), (j) or (m) of the
definition of "Permitted Indebtedness";

(f)  statutory  Liens  of  landlords  and  carriers,  warehousemen,   mechanics,
suppliers,  materialmen,  repairmen or other like Liens  arising in the ordinary
course of business of any Restricted Entity and, with respect to amounts not yet
delinquent  or being  contested in good faith by  appropriate  proceeding,  if a
reserve or other appropriate  provision,  if any, as required in conformity with
GAAP shall have been made therefor;

(g) Liens for taxes,  assessments,  government  charges or claims that are being
contested  in good faith by  appropriate  proceedings  promptly  instituted  and
diligently conducted and if a reserve or other appropriate provision, if any, as
shall be required in conformity with GAAP shall have been made therefor;

(h) Liens incurred or deposits made to secure the performance of tenders,  bids,
leases,  statutory obligations,  surety and appeal bonds,  government contracts,
performance  bonds,  escrows and other  obligations of a like nature incurred in
the ordinary course of business (other than contracts for the payment of money);

(i)  easements,  rights-of-way,   restrictions  and  other  similar  charges  or
encumbrances  not  interfering in any material  respect with the business of any
Restricted Entity incurred in the ordinary course of business;

(j) Liens  arising  by reason of any  judgment,  decree or order of any court so
long as such Lien is adequately  bonded and any  appropriate  legal  proceedings
that may have been duly  initiated  for the review of such  judgment,  decree or
order shall not have been  finally  terminated  or the period  within which such
proceedings may be initiated shall not have expired;

(k) Liens securing Acquired Indebtedness created prior to (and not in connection
with  or in  contemplation  of)  the  incurrence  of  such  Indebtedness  by any
Restricted  Entity;  PROVIDED  that such Lien does not extend to any property or
assets of any  Restricted  Entity other than the assets  acquired in  connection
with the incurrence of such Acquired Indebtedness;

(l) Liens securing  obligations of the Company or the Parent under Interest Rate
Agreements or Currency  Agreements  permitted to be incurred under clause (f) of
the   definition  of  "Permitted   Indebtedness"   or  any  collateral  for  the
Indebtedness  to which such  Interest  Rate  Agreements  or Currency  Agreements
relate;

(m) Liens  incurred  or  deposits  made in the  ordinary  course of  business in
connection with workers' compensation, unemployment insurance and other types of
social security;

(n) Liens  securing  reimbursement  obligations  of any  Restricted  Entity with
respect to letters of credit that encumber documents and other property relating
to such letters of credit and the products and proceeds thereof;

(o) Liens arising from purchase  money  mortgages  and purchase  money  security
interests;  PROVIDED that (i) the related  Indebtedness  shall not be secured by
any  property or assets of any  Restricted  Entity  other than the  property and
assets so acquired and (ii) the Lien securing such Indebtedness shall be created
within 60 days of such acquisition;

(p) Liens securing the Escrow Account,  the Pledged  Securities and the proceeds
thereof and the security  interest  created by the Amended and  Restated  Pledge
Agreement;

(q) any  extension,  renewal or  replacement,  in whole or in part,  of any Lien
described  in the  foregoing  clauses (a) through  (o);  PROVIDED  that any such
extension,  renewal or replacement  shall be no more restrictive in any material
respect than the Lien so  extended,  renewed or replaced and shall not extend to
any additional property or assets;

(r) Liens with respect to the equipment and related assets of the Company or the
Parent  installed  on their  respective  networks in favor of Persons  that have
licensed, leased, transferred or granted to any Restricted Entity a right to use
Telecommunications  Assets or financed the purchase of Telecommunications Assets
or  securing  the  obligations  of such  Restricted  Entity  under an  Incumbent
Agreement;  PROVIDED  that such  Liens  will (1) be  created  on terms  that the
Company  or the Parent (as the case may be)  reasonably  believes  to be no less
favorable  to the Company or the Parent than Liens  granted  under clause (e) of
this definition and (2) not secure any Indebtedness in excess of the Fair Market
Value of the equipment and assets so secured;

(s) Liens relating to revenues of any  Restricted  Entity arising as a result of
obligations under an Incumbent Agreement; and

(t) Liens on the  property  or assets or Capital  Stock of  Accounts  Receivable
Subsidiaries  and Liens  arising out of any sale of Accounts  Receivable  in the
ordinary   course  of  business   (including  in  connection  with  a  financing
transaction) to or by an Accounts  Receivable  Subsidiary or to Persons that are
not Affiliates of the Company or the Parent.

              "PERMITTED  TELECOMMUNICATIONS  ASSET  SALE"  means any  transfer,
conveyance,  sale,  lease or other  disposition  of a  capital  asset  that is a
Telecommunications  Asset,  the  proceeds  of  which  are  treated  as  revenues
(including  deferred  revenues) by the Parent or the Company in accordance  with
GAAP.

              "PERMITTED  TELECOMMUNICATIONS JOINT VENTURE" means a corporation,
partnership or other entity engaged in one or more  Telecommunications  Business
in which the  Company or the Parent  owns,  directly  or  indirectly,  an equity
interest.

              "PLEDGED   SECURITIES"   means  the   securities,   consisting  of
Government Securities,  deposited in the Escrow Account pursuant to the Original
Pledge Agreement together with the New Pledged Securities.

              "REDEEMABLE  CAPITAL  STOCK"  means any class or series of Capital
Stock that,  either by its terms,  by the terms of any security into which it is
convertible  or  exchangeable  or by  contract  or  otherwise,  is or,  upon the
happening of an event or passage of time would be, required to be redeemed prior
to the final Stated  Maturity of the Notes or is redeemable at the option of the
holder  thereof at any time prior to such final Stated  Maturity of the Notes or
is  redeemable  at the  option of the  holder  thereof at any time prior to such
final  Stated  Maturity,  or  is  convertible  into  or  exchangeable  for  debt
securities  at any time prior to such final Stated  Maturity;  PROVIDED that any
Capital Stock that would not otherwise  constitute  Redeemable Capital Stock but
for  provisions  giving  holders  thereof  the right to require  such  Person to
repurchase or redeem such Capital  Stock upon the  occurrence of an "asset sale"
or "change of control" occurring prior to the Stated Maturity of the Notes shall
not  constitute  Redeemable  Capital  Stock if the  "asset  sale" or  "change of
control"  provisions  applicable to such Capital Stock are no more  favorable in
any  material  respect  to holders of such  Capital  Stock that then  provisions
contained  in Section  1017 and Section 1010 are to holders of the Notes and the
Guarantees,  and such Capital Stock specifically  provides that such Person will
not repurchase or redeem any such Capital Stock pursuant to any provision  prior
to the  repurchase by the Company or the Parent of such Notes and  Guarantees as
are required to be repurchased pursuant to Section 1017 and Section 1010.

              "RESTRICTED  COMPANY  SUBSIDIARY"  means  any  Subsidiary  of  the
Company other than an Unrestricted Subsidiary.

              "RESTRICTED ENTITY" means (i) any Restricted Subsidiary,  (ii) the
Parent, and (iii) the Company.

              "RESTRICTED  PARENT SUBSIDIARY" means any Subsidiary of the Parent
other than (i) the Company,  (ii) a Restricted Company Subsidiary,  and (iii) an
Unrestricted Subsidiary.

              "RESTRICTED  SUBSIDIARY" means any Restricted  Company  Subsidiary
and any Restricted Parent Subsidiary.

              "SALE-LEASEBACK   TRANSACTION"   means  any  direct  or   indirect
arrangement,  or series of related  arrangements,  with any Person (other than a
Restricted  Entity) or to which any Person (other than a Restricted Entity) is a
party,  providing for the leasing to a Restricted  Entity of any property for an
aggregate term exceeding three years,  whether owned by the Company,  the Parent
or by any  Subsidiary  of either of them at the  Issue  Date or later  acquired,
which has been or is to be sold or transferred by such Restricted Entity to such
Person or to any other Person from whom funds have been or are to be advanced by
such Person on the security of such property;  PROVIDED that the transfer by any
Restricted  Entity of  Telecommunications  Assets  to,  and the  leasing  by any
Restricted  Entity of such assets  from,  a Permitted  Telecommunications  Joint
Venture shall not constitute a Sale-Leaseback Transaction.

              "SIGNIFICANT  SUBSIDIARY" means at any date of determination,  the
Company and any Restricted Subsidiary that, together with its Subsidiaries,  (i)
for the most recent fiscal year of the Parent accounted for more than 10% of the
consolidated revenues of the Parent and the Restricted Parent Subsidiaries, (ii)
as of the  end of such  fiscal  year,  was the  owner  of more  than  10% of the
consolidated  assets of the Parent and the Restricted  Parent  Subsidiaries,  or
(iii) owns one or more FCC licenses the  aggregate  cost or Fair Market Value of
which  represents  5% or more of the  net  asset  value  of the  Parent  and the
Restricted  Parent  Subsidiaries  on a consolidated  basis as of the end of such
fiscal year, in the case of (i), (ii) or (iii) as set forth on the most recently
available consolidated financial statements of the Parent for such fiscal year.

              "SUBSIDIARY"  means, any Person a majority of the equity ownership
or Voting Stock of which is at the time owned,  directly or  indirectly,  by the
Parent or by one or more  other  Subsidiaries  or by the  Parent and one or more
other  Subsidiaries,  unless used with respect to the Company, in which event as
shall mean any Person a majority  of the  equity  ownership  or Voting  Stock of
which is at the time owned, directly or indirectly,  by the Company or by one or
more  other of its  Subsidiaries  or by the  Company  and one or more  other its
Subsidiaries.

              "TELECOMMUNICATIONS  ASSETS"  means,  with  respect to any Person,
assets  (including  rights of way,  trademarks and licenses)  other than current
assets that are utilized by such Person, directly or indirectly, for the design,
development,  construction,   installation,  integration  or  provision  of  the
Company's or the Parent's network, including, without limitation, any businesses
or  services  in which the  Company  or the  Parent  is  currently  engaged  and
including  any  computer   systems  used  in  a   Telecommunications   Business.
Telecommunications  Assets also  include 66 2/3% of the Voting  Stock of another
Person,  PROVIDED  that  substantially  all of the assets of such  other  Person
consist of  Telecommunications  Assets,  and PROVIDED  further such Voting Stock
shall  be  held  by a  Restricted  Entity,  such  other  Person  either  is,  or
immediately  following  the  relevant  transaction  shall  become,  a Restricted
Subsidiary  pursuant to this Indenture or a Permitted  Telecommunications  Joint
Venture  subject to the limitations set forth under clause (p) of the definition
of  "Permitted  Investment"  contained  in  Section  102  of  this  Supplemental
Indenture. The determination of what constitutes Telecommunications Assets shall
be made by the  Board  of  Directors  of the  Parent  and  evidenced  by a Board
Resolution delivered to the Trustee.

              "TELECOMMUNICATIONS   BUSINESS"   means,   the   business  of  (i)
transmitting,  or providing  services  relating to the  transmission  of, voice,
video  or  data  through   owned  or  leased   transmission   facilities,   (ii)
constructing,  creating,  developing,  acquiring or marketing  Telecommunication
Assets or other  communications  related network  equipment,  software and other
devices  for  use  in  a   telecommunications   business  or  (iii)  evaluating,
participating  or pursuing any other activity or  opportunity  that is primarily
related to those  identified  in clause  (i) or (ii)  above;  PROVIDED  that the
determination of what constitutes a Telecommunications Business shall be made in
good faith by the Board of Directors  of the Parent or the Company,  as the case
may be.

              "TELECOMMUNICATIONS   INDEBTEDNESS"   means  Indebtedness  of  any
Restricted  Entity  incurred at any time within 315 days of, and for the purpose
of  financing  all or any  part of the  cost of,  the  construction,  expansion,
installation,  acquisition or  improvement  by any Restricted  Entity of any new
Telecommunications  Assets;  PROVIDED that the proceeds of such Indebtedness are
expended for such purposes within such 315-day period; and PROVIDED further that
the Net Cash Proceeds from the issuance of such Indebtedness does not exceed, as
of the date of incurrence thereof, 100% of the lesser of the cost or Fair Market
Value of such Telecommunications Assets; PROVIDED further that, to the extent an
Incumbent Agreement is characterized as a Capitalized Lease Obligation, it shall
be considered Telecommunications Indebtedness.

              "UNRESTRICTED SUBSIDIARY" means:

(a) any Subsidiary  that at the time of  determination  shall be an Unrestricted
Subsidiary  (as  designated  by the Board of Directors of the Parent as provided
below); and

(b) any Subsidiary of an Unrestricted Subsidiary.

              The Board of Directors of the Parent may designate any  Subsidiary
(including any newly acquired or newly formed  Subsidiary) to be an Unrestricted
Subsidiary  so long  as (i)  neither  the  Company,  the  Parent  nor any  other
Subsidiary  is  directly  or  indirectly  liable  for any  Indebtedness  of such
Subsidiary,  (ii) no default with respect to any Indebtedness of such Subsidiary
would permit (upon notice,  lapse of time or otherwise)  any holder of any other
Indebtedness  of the  Company  or the  Parent or any  Restricted  Subsidiary  to
declare a default on such other  Indebtedness or cause the payment thereof to be
accelerated  or payable prior to its Stated  Maturity,  (iii) any  Investment in
such Subsidiary made as a result of designating  such Subsidiary an Unrestricted
Subsidiary  will not violate the provisions of Section 1012,  (iv) no Restricted
Entity has a contract,  agreement,  arrangement,  understanding or obligation of
any kind,  whether written or oral,  with such Subsidiary  other than those that
might be obtained at the time from persons who are not Affiliates of the Parent,
and (v) none of the Company,  the Parent,  nor any other Subsidiary of either of
them has any obligation (1) to subscribe for additional  shares of Capital Stock
or other equity interest in such Subsidiary, or (2) to maintain or preserve such
Subsidiary's  financial condition or to cause such Subsidiary to achieve certain
levels of operating  results.  Any such designation by the Board of Directors of
the Parent shall be evidenced to the Trustee by filing a Board  Resolution  with
the  Trustee  giving  effect to such  designation.  The Board of  Directors  may
designate any Unrestricted Subsidiary as a Restricted Subsidiary if, immediately
after giving effect to such  designation,  there would be no Default or Event of
Default under this  Indenture and the Company or the Parent (as the case may be)
could incur $1.00 of additional Indebtedness (other than Permitted Indebtedness)
pursuant to Section 1011.

SECTION 103.      DEFINITIONS FOR PURPOSES OF SECTION 1017(A).

              The  following   definitions   will  apply  for  the  purposes  of
interpretation  of Section  1017(a)  and the  defined  terms  contained  in this
Section 103.  Capitalized  terms used in Section  1017(a) or in this Section 103
which are not defined in this Section 103 shall be given the meaning ascribed to
them in  Section  102 of this  Supplemental  Indenture,  or, if such term is not
defined in such Section 102, in Section 101 of the Indenture.

              "ACCOUNTS  RECEIVABLE  SUBSIDIARY"  means any  Restricted  Company
Subsidiary that is,  directly or indirectly,  wholly owned by the Company (other
than directors  qualifying  shares) and organized for the purpose of and engaged
in (i) purchasing,  financing and collecting accounts receivable  obligations of
customers of any Restricted  Company  Subsidiary,  (ii) the sale or financing of
accounts  receivable or interests  therein and (iii) other  activities  directly
related thereto.

              "ALLOWABLE COMPANY  INDEBTEDNESS"  means Indebtedness  incurred by
the Company if, at the time of such incurrence, the Consolidated Indebtedness to
Consolidated Operating Cash Flow Ratio would have been less than or equal to (i)
6.0 to 1.0 but  greater  than zero,  for  Indebtedness  incurred  on or prior to
December  31, 2001,  or (ii) 5.0 to 1.0 but greater  than zero for  Indebtedness
incurred thereafter.

              "ASSET SALE" means any sale, issuance, conveyance, transfer, lease
or  other   disposition   (including   by  way  of  merger,   consolidation   or
Sale-Leaseback   Transaction)   (collectively,   a   "transfer"),   directly  or
indirectly, in one or a series of related transactions, of (i) any Capital Stock
of  any  Subsidiary  of  the  Company;  (ii)  all  or  substantially  all of the
properties and assets of the Company or any Subsidiary of the Company;  or (iii)
any other  properties or assets of the Company or any Subsidiary of the Company,
other than in the  ordinary  course of business  (it being  understood  that the
ordinary course of business includes,  but is not restricted to, any transfer or
sale of, or the grant of a right to use,  an asset to an  Incumbent  pursuant to
(x) an Incumbent Agreement, (y) applicable law or (z) an agreement to which such
Incumbent  is a party which  exists on the date of, and is not  entered  into in
contemplation  of,  such  Incumbent   Agreement).   For  the  purposes  of  this
definition,  the term "Asset Sale" shall not include any transfer of  properties
or assets (A) that  constitutes a Permitted  Transaction,  (B) of the Company to
any Restricted  Company  Subsidiary,  or of any Restricted Company Subsidiary to
the Company or any other  Restricted  Company  Subsidiary in accordance with the
terms of this Indenture,  (C) having an aggregate Fair Market Value of less than
$2,000,000 (or the equivalent thereof in any other currency) in any given fiscal
year, (D) by the Company or a Restricted  Company  Subsidiary to a Person who is
not an Affiliate of the Company in exchange  for  Telecommunications  Assets (or
not less than 66 2/3% of the outstanding Voting Stock of a Person that becomes a
Restricted  Company  Subsidiary,  the  assets  of  which  consist  primarily  of
Telecommunications Assets) or related telecommunications  services where, in the
good faith  Judgment of the Board of  Directors  of the Company  evidenced  by a
Board Resolution,  the Fair Market Value of such  Telecommunications  Assets (or
such Voting  Stock) or services so received is at least equal to the Fair Market
Value of the  properties or assets  disposed of or, if less,  the  difference is
received by the Company in cash in an amount at least equal to such  difference,
(E) constituting  Capital Stock of an Unrestricted  Company  Subsidiary or other
Investment  that  was not a  Restricted  Payment  when  made,  (F)  constituting
accounts  receivable  of the Company or a Restricted  Company  Subsidiary  to an
Accounts Receivable Subsidiary or in consideration of Fair Market Value thereof,
to Persons  that are not  Affiliates  of the  Company or any  Subsidiary  of the
Company  in the  ordinary  course of  business,  including  in  connection  with
financing  transactions,  (G) in connection  with a  Sale-Leaseback  Transaction
otherwise  permitted  to be incurred as Permitted  Indebtedness  or as Allowable
Company  Indebtedness,  (H) to a Permitted  Telecommunications  Joint Venture if
such  transfer of  properties  or assets is permitted  under the  definition  of
"Permitted Investments",  (I) in connection with a Permitted  Telecommunications
Asset Sale or (J) to an  Unrestricted  Company  Subsidiary  if not a  Restricted
Payment.

              "BOARD OF DIRECTORS"  means,  either the board of directors of the
Company or any duly authorized committee of that board.

              "BOARD RESOLUTION" means, a copy of a resolution  certified by the
Secretary or an Assistant  Secretary of the Company to have been duly adopted by
the Board of  Directors of the Company and to be in full force and effect on the
date of such certification, and delivered to the Trustee.

              "CASH EQUIVALENTS" means:

(a) any evidence of  Indebtedness  with a maturity of 180 days or less issued or
directly and fully  guaranteed or insured by the United States of America or any
agency or  instrumentality  thereof  (PROVIDED that the full faith and credit of
the United States of America is pledged in support thereof);

(b) certificates of deposit or acceptance with a maturity of 180 days or less of
any financial  institution  that is a member of the Federal Reserve  System,  in
each case having combined capital and surplus and undivided  profits of not less
than $500,000,000;

(c) commercial paper with a maturity of 180 days or less issued by a corporation
that is not an Affiliate  of the Company and is organized  under the laws of any
state of the  United  States  and  rated at least  A-1 by S&P or at least P-1 by
Moody's; and

(d) money market mutual funds that invest  substantially  all of their assets in
securities of the type described in the preceding clauses.

              "CONSOLIDATED  ADJUSTED  NET INCOME"  means,  with  respect to any
period,  the consolidated net income (or loss) of the Company and all Restricted
Company  Subsidiaries  for such period as determined  in  accordance  with GAAP,
adjusted by excluding, without duplication:

(a) any net after-tax  extraordinary gains or losses (less all fees and expenses
relating thereto);

(b) any net  after-tax  gains or  losses  (less all fees and  expenses  relating
thereto) attributable to asset dispositions other than in the ordinary course of
business;

(c) the portion of net income (or loss) of any Person (other than the Company or
a Restricted Company Subsidiary),  including Unrestricted Subsidiaries, in which
the Company or any  Restricted  Company  Subsidiary  has an ownership  interest,
except to the extent of the amount of dividends or other distributions  actually
paid to the Company or any  Restricted  Company  Subsidiary in cash dividends or
distributions during such period;

(d) the net  income  (or loss) of any Person  combined  with the  Company or any
Restricted  Company Subsidiary on a "pooling of interests" basis attributable to
any period prior to the date of combination;

(e) the net income of any Restricted  Company  Subsidiary to the extent that the
declaration or payment of dividends or similar  distributions by such Restricted
Company  Subsidiary is not at the date of determination  permitted,  directly or
indirectly,  by  operation  of the  terms  of  its  charter  or  any  agreement,
instrument,  judgment,  decree, order, statute, rule or governmental  regulation
applicable to such Restricted  Company  Subsidiary or its stockholders  (except,
for  purposes of  determining  whether any  Indebtedness  is  Allowable  Company
Indebtedness, any Permitted Restriction); and

(f) any net income (or loss) from any Restricted  Company Subsidiary that was an
Unrestricted  Company  Subsidiary  at any time during such period other than any
amounts actually received from such Restricted Company Subsidiary.

              "CONSOLIDATED INDEBTEDNESS" means, with respect to any period, the
aggregate  amount of  Indebtedness  of the  Company and its  Restricted  Company
Subsidiaries  outstanding  at the  date  of  determination  as  determined  on a
consolidated basis in accordance with GAAP.

              "CONSOLIDATED  INDEBTEDNESS  TO  CONSOLIDATED  OPERATING CASH FLOW
RATIO"  means,  at any date of  determination,  the  ratio  of (i)  Consolidated
Indebtedness  to (ii)  Consolidated  Operating  Cash Flow for the two  preceding
fiscal quarters for which financial  information is available  immediately prior
to the date of determination,  multiplied by two; PROVIDED that any Indebtedness
incurred or retired by the Company or any of its Restricted Company Subsidiaries
during  the  fiscal  quarter  in which  the  transaction  date  occurs  shall be
calculated as if such  Indebtedness were so incurred or retired on the first day
of the  fiscal  quarter  in which  the date of  determination  occurs  (PROVIDED
further  that,  in  making  any  such  computation,   the  aggregate  amount  of
Indebtedness  under any revolving  credit or similar facility shall be deemed to
include  an  amount  of  funds  equal  to the  average  daily  balance  of  such
Indebtedness  during such two fiscal quarter period);  and PROVIDED FURTHER that
(x) if the  transaction  giving rise to the need to calculate  the  Consolidated
Indebtedness to Consolidated  Operating Cash Flow Ratio would have the effect of
increasing or decreasing  Consolidated  Indebtedness or  Consolidated  Operating
Cash Flow in the future,  Consolidated  Indebtedness and Consolidated  Operating
Cash Flow shall be  calculated on a pro forma basis as if such  transaction  had
occurred on the first day of such two fiscal quarter  period  preceding the date
of determination;  (y) if during such two fiscal quarter period,  the Company or
any of its Restricted Company  Subsidiaries shall have engaged in any Asset Sale
in respect of any company, entity or business,  Consolidated Operating Cash Flow
for such  period  shall  be  reduced  by an  amount  equal  to the  Consolidated
Operating  Cash Flow (if  positive),  or  increased  by an  amount  equal to the
Consolidated  Operating Cash Flow (if negative),  directly  attributable  to the
company,  entity or  business  that is the  subject  of such  Asset Sale and any
related  retirement  of  Indebtedness  as if such  Asset  Sale  and any  related
retirement of Indebtedness had occurred on the first day of such period;  or (z)
if during such two fiscal  quarter  period the Company or any of its  Restricted
Company  Subsidiaries  shall have  acquired  any  company,  entity or  business,
Consolidated  Operating Cash Flow shall be calculated on a pro forma basis as if
such acquisition and any related financing had occurred on the first day of such
period.

              "CONSOLIDATED  INTEREST  EXPENSE" means,  for any period,  without
duplication, the sum of:

(a) the consolidated  interest expense of the Company and its Restricted Company
Subsidiaries for such period,  including (i) amortization of debt discount, (ii)
the net cost of Interest Rate Agreements (including  amortization of discounts),
(iii) the interest  portion of any  deferred  payment  obligation,  (iv) accrued
interest, (v) the consolidated amount of any interest capitalized by the Company
and (vi) amortization of debt issuance costs, plus

(b) the consolidated  interest component of Capitalized Lease Obligations of the
Company and its Restricted  Company  Subsidiaries paid, accrued and/or scheduled
to be paid or accrued during such period; excluding, however, any amount of such
interest  of any  Restricted  Company  Subsidiary  if the  net  income  of  such
Restricted  Company  Subsidiary is excluded in the  calculation of  Consolidated
Adjusted Net Income  pursuant to clause (e) of the definition  thereof (but only
in the same proportion as the net income of such Restricted  Company  Subsidiary
is excluded from the calculation of Consolidated Adjusted Net Income pursuant to
clause (e) of the definition thereof); PROVIDED that in making such computation,
(x)  the  Consolidated   Interest  Expense   attributable  to  interest  on  any
Indebtedness  computed on a pro forma basis and (A) bearing a floating  interest
rate shall be computed as if the rate in effect on the date of  computation  had
been the applicable rate for the entire period and (B) which was not outstanding
during the period for which the  computation  is being made but which bears,  at
the  option of the  Company,  a fixed or  floating  rate of  interest,  shall be
computed by applying, at the option of the Company, either the fixed or floating
rate, (y) the  Consolidated  Interest  Expense  attributable  to interest on any
Indebtedness  under a revolving  credit  facility  computed on a pro forma basis
shall be computed  based upon the  average  daily  balance of such  Indebtedness
during the  applicable  period  and (z) the  interest  rate with  respect to any
Indebtedness  covered by an Interest  Rate  Agreement  shall be deemed to be the
effective  interest  rate with  respect to such  Indebtedness  after taking into
account such Interest Rate Agreement.

              "CONSOLIDATED  OPERATING  CASH FLOW"  means,  with  respect to any
period, the Consolidated Adjusted Net Income for such period:

(a) increased by (to the extent deducted in computing  Consolidated Adjusted Net
Income) the sum of (i) the Consolidated  Tax Expense of such Restricted  Company
Subsidiaries as are subject to the immediately  preceding  parenthetical  clause
for such period  (other than taxes  attributable  to  extraordinary,  unusual or
non-recurring  gains or losses);  (ii)  Consolidated  Interest  Expense for such
period;   (iii)   depreciation  of  the  Company  and  the  Restricted   Company
Subsidiaries for such period,  determined on a consolidated  basis in accordance
with  GAAP;  (iv)  amortization  of  the  Company  and  the  Restricted  Company
Subsidiaries for such period,  determined on a consolidated  basis in accordance
with GAAP;  and (v) any other  non-cash  charges that were deducted in computing
Consolidated  Adjusted Net Income  (excluding any non-cash charge which requires
an accrual or reserve for cash charges for any future period) of the Company and
its Restricted Company Subsidiaries for such period in accordance with GAAP; and

(b) decreased by any non-cash  gains of the Company and the  Restricted  Company
Subsidiaries that were included in computing Consolidated Adjusted Net Income.

              "CONSOLIDATED  TAX EXPENSE" means,  for any period,  the provision
for U.S.  federal,  state,  provincial,  local and foreign  income  taxes of the
Company and the Restricted Company Subsidiaries for such period as determined on
a consolidated basis in accordance with GAAP.

              "EVENT OF DEFAULT" means any one of the following events (whatever
the  reason  for such Event of Default  and  whether  it shall be  voluntary  or
involuntary  or be effected  by  operation  of law or pursuant to any  judgment,
decree  or  order  of  any  court  or  any  order,  rule  or  regulation  of any
administrative or governmental body):

(a) default in the  payment of any  interest on any Note when it becomes due and
payable,  and  continuance  of  such  default  for a  period  of 30 days or more
(provided  that such 30-day grace period  shall not be  applicable  to the first
four interest payments due on the Notes);

(b) default in the payment of the principal of (or premium, if any, on) any Note
at its Maturity (upon acceleration,  optional  redemption,  required purchase or
otherwise);

(c) default in the performance,  or breach,  of any covenant or agreement of the
Company contained in this Indenture (other than a default in the performance, or
breach,  of a covenant  or  agreement  which is  specifically  dealt with in the
immediately  preceding  clause (a) or (b) or in clause  (B),  (C) or (D) of this
clause (c)) and  continuance  of such  default or breach for a period of 30 days
after  written  notice shall have been given to the Company by the Trustee or to
the  Company  and the  Trustee  by the  Holders  of at  least  25% in  aggregate
principal amount of the Notes then  Outstanding;  (B) default in the performance
or breach of the provisions of Section 1017;  (C) completion of any  transaction
or series of  transactions  pursuant to which the Company  consolidates  with or
merges into any other Person or sells, assigns,  conveys,  transfers,  leases or
otherwise  disposes of all of the  properties  and assets of the Company and the
Restricted  Subsidiaries on a consolidated basis to any other Person or Persons,
which  does not  constitute  a  Permitted  Transaction;  and (D)  default in the
performance or breach of Section 1010;

(d) (A) one or more defaults in the payment of principal of or premium,  if any,
or  interest  on  Indebtedness  of the  Company  or any  Significant  Subsidiary
aggregating  $7,500,000  or more,  when the same  becomes due and payable at the
Stated Maturity thereof, and such default or defaults shall have continued after
any  applicable  grace  period  and shall  not have been  cured or waived or (B)
Indebtedness of the Company or any Significant Subsidiary aggregating $7,500,000
or more shall have been  accelerated or otherwise  declared due and payable,  or
required  to be  prepaid  or  repurchased  (other  than by  regularly  scheduled
required prepayment), prior to the Stated Maturity thereof;

(e) one or more final  judgments,  orders or decrees of any court or  regulatory
agency shall be rendered  against the Company or any  Significant  Subsidiary or
their respective  properties for the payment of money, either individually or in
an  aggregate  amount,  in excess of  $7,500,000  and either (A) an  enforcement
proceeding shall have been commenced by any creditor upon such judgment or order
or (B)  there  shall  have  been a  period  of 30  days  during  which a stay of
enforcement  of such  judgment  or  order,  by  reason  of a  pending  appeal or
otherwise, was not in effect;

(f) the  entry  of a  decree  or order  by a court  having  jurisdiction  in the
premises  adjudging  the Company or any  Significant  Subsidiary  as bankrupt or
insolvent,  or approving as properly  filed a petition  seeking  reorganization,
arrangement,  adjustment or  composition  of or in respect of the Company or any
Significant Subsidiary under the Federal Bankruptcy Code or any other applicable
federal or state law, or appointing a receiver,  liquidator,  assignee, trustee,
sequestrator  (or other  similar  official)  of the  Company or any  Significant
Subsidiary or of any substantial  part of its property,  or ordering the winding
up or  liquidation  of its affairs,  and the  continuance  of any such decree or
order unstayed and in effect for a period of 90 consecutive days;

(g) the institution by the Company or any Significant  Subsidiary of proceedings
to be  adjudicated  a  bankrupt  or  insolvent,  or  the  consent  by it to  the
institution of bankruptcy or insolvency proceedings against it, or the filing by
it of a petition or answer or consent seeking reorganization or relief under the
Federal  Bankruptcy  Code or any other  applicable  federal or state law, or the
consent  by it to the filing of any such  petition  or to the  appointment  of a
receiver,   liquidator,   assignee,  trustee,  sequestrator  (or  other  similar
official) of the Company or any  Significant  Subsidiary  or of any  substantial
part of its property,  or the making by it of an  assignment  for the benefit of
creditors,  or the  admission by it in writing of its inability to pay its debts
generally as they become due; or

(h) the Pledge Agreement ceases to be in full force and effect before payment in
full of the obligations
thereunder.

              "FAIR MARKET VALUE" means,  with respect to any asset or property,
the sale value that would be obtained in an arm's length transaction  between an
informed  and willing  seller  under no  compulsion  to sell and an informed and
willing buyer under no compulsion to buy.  Unless  otherwise  specified  herein,
Fair Market Value shall be determined  by the Board of Directors  acting in good
faith and as of the date on which such determination is made.

              "INCUMBENT"  means any  railroad,  utility,  governmental  entity,
pipeline or other  licensed  owner (which  ownership is  determined  immediately
prior to any transaction with the Company or a Restricted Company Subsidiary) of
Telecommunications  Assets to be used in the  Company's  network  pursuant to an
Incumbent  Agreement  (and any  subsidiary or Affiliate of such Person that is a
party to an Incumbent  Agreement for the sole purpose of receiving payments from
the Company or a Restricted Company Subsidiary pursuant to such agreement).

              "INCUMBENT  AGREEMENT" means an agreement between an Incumbent and
the Company or a Restricted  Company  Subsidiary  pursuant to which, among other
things, such Incumbent receives a payment equal to a percentage of the Company's
or such Restricted Company Subsidiary's revenues, if any, attributable, in whole
or in part, to Telecommunications  Assets transferred or leased, or with respect
to which a right of use has been  granted,  by such  Incumbent to the Company or
such Restricted Company Subsidiary and upon or with respect to which the Company
or such Restricted  Company Subsidiary has constructed or intends to construct a
portion of its network.

              "INCUR" OR "INCUR"  means,  with respect to any  Indebtedness,  to
incur,  create,  issue,  assume,  guarantee  or  otherwise  become  directly  or
indirectly  liable or responsible for the payment of, or otherwise  incur,  such
Indebtedness,  contingently  or otherwise;  PROVIDED that neither the accrual of
interest nor the  accretion of original  issue  discount  shall be considered an
incurrence of Indebtedness.  With respect to Indebtedness to be borrowed under a
binding  commitment  previously  entered  into that  provides for the Company to
Incur  Indebtedness  on a revolving  basis,  the Company shall be deemed to have
Incurred the greater of (a) the Indebtedness  actually  Incurred or (b) all or a
portion of the amount of such unborrowed  commitment that the Company shall have
so  designated  to be  Incurred in an  Officer's  Certificate  delivered  to the
Trustee (in which case the Company shall not be deemed to incur such  unborrowed
amount at the time or times it is actually borrowed).

              "INDEBTEDNESS"  means,  with  respect to any Person at any date of
determination, without duplication:

(a) all liabilities,  contingent or otherwise,  of such Person: (i) for borrowed
money (including overdrafts),  (ii) in connection with any letters of credit and
acceptances issued under letter of credit facilities,  acceptance  facilities or
other  similar  facilities  (including  reimbursement  obligations  with respect
thereto),   (iii)  evidenced  by  bonds,  notes,  debentures  or  other  similar
instruments,  (iv) for the  deferred  and unpaid  purchase  price of property or
services  or  created  or  arising  under any  conditional  sale or other  title
retention  agreement with respect to property acquired by such Person or (v) for
Capitalized Lease Obligations (including any Sale-Leaseback Transaction);

(b) all  obligations  of such  Person  under  or in  respect  of  Interest  Rate
Agreements and Currency Agreements;

(c) all  Indebtedness  referred  to in (but not  excluded  from)  the  preceding
clauses of other  Persons and all  dividends  of other  Persons,  the payment of
which is  secured  by (or for  which  the  holder  of such  Indebtedness  has an
existing right, contingent or otherwise, to be secured by) any Lien upon or with
respect to any property  (including  accounts and contract rights) owned by such
Person,  whether or not such Person has assumed or become liable for the payment
of such  Indebtedness  (the  amount of such  obligation  being  deemed to be the
lesser  of (i) the Fair  Market  Value of such  property  or asset  and (ii) the
amount of such obligation so secured);

(d) all guarantees by such Person of Indebtedness referred to in this definition
of any other Person; and

(e) all  Redeemable  Stock of such Person valued at the greater of its voluntary
or  involuntary   maximum  fixed  repurchase  price,  plus  accrued  and  unpaid
dividends.

              The amount of  Indebtedness  of any Person at any date will be the
outstanding balance at such date (or, in the case of a revolving credit or other
similar  facility,  the total amount of funds  outstanding  and/or designated as
incurred  and  certified  by an officer of the Company to have been  Incurred on
such date  pursuant  to clause (b) of the last  sentence  of the  definition  of
"Incur") of all  unconditional  obligations as described above and, with respect
to contingent  obligations,  the maximum  liability  upon the  occurrence of the
contingency  giving  rise  to the  obligation;  PROVIDED  (i)  that  the  amount
outstanding at any time of any Indebtedness  issued with original issue discount
equals  the face  amount of such  Indebtedness  less the  remaining  unamortized
portion of the  original  issue  discount of such  Indebtedness  at such time as
determined in conformity with GAAP and (ii) that Indebtedness  shall not include
any liability for U.S. federal, state, local or other taxes owed by such Person.
For purposes  hereof,  the "maximum  fixed  repurchase  price" of any Redeemable
Capital Stock which does not have a fixed  repurchase  price shall be calculated
in  accordance  with  the  terms  of such  Redeemable  Capital  Stock as if such
Redeemable  Capital Stock were purchased on any date on which Indebtedness shall
be required to be determined  pursuant to this  Indenture,  and if such price is
based upon,  or measured  by, the Fair Market Value of such  Redeemable  Capital
Stock,  such Fair Market Value will be  determined in good faith by the board of
directors of the issuer of such Redeemable  Capital Stock.  Notwithstanding  the
foregoing, trade accounts and accrued liabilities arising in the ordinary course
of business will not be considered Indebtedness for purposes of this definition.

              "INVESTED CAPITAL" means the sum of:

(a) 75% of the  aggregate  net cash  proceeds  received by the Company  from the
issuance of (or capital  contributions  with respect to) any  Qualified  Capital
Stock subsequent to the Issue Date, other than the issuance of Qualified Capital
Stock to a Restricted Company Subsidiary; and

(b) 75% of the aggregate  net cash  proceeds  from sales of  Redeemable  Capital
Stock of the Company or Indebtedness of the Company  convertible  into Qualified
Capital  Stock of the Company,  in each case upon such  redemption or conversion
thereof into Qualified Capital Stock.

              "INVESTMENT"  means,  with respect to the  Company's  relationship
with any Person,  any direct or indirect  advance,  loan or other  extension  of
credit or capital  contribution  to (by means of any  transfer  of cash or other
property to others or any payment  for  property or services  for the account or
use of others) or any purchase,  acquisition  or ownership by such Person of any
Capital  Stock,  bonds,  notes,  debentures or other  securities or evidences of
Indebtedness issued or owned by, any other Person and all other items that would
be classified as  investments  on a balance  sheet  prepared in accordance  with
GAAP. In addition,  the portion  (proportionate to the Company's equity interest
in such Subsidiary) of the Fair Market Value of the net assets of any Subsidiary
at  the  time  that  such  Subsidiary  is  designated  an  Unrestricted  Company
Subsidiary  shall be deemed to be an  "Investment"  made by the  Company in such
Unrestricted  Company Subsidiary at such time and the portion  (proportionate to
the Company's equity interest in such Subsidiary of the Fair Market Value of the
net assets of any  Subsidiary  at the time that such  Subsidiary is designated a
Restricted  Company  Subsidiary  shall be considered a reduction in  outstanding
Investments.   "Investments"   shall  exclude  extensions  of  trade  credit  on
commercially reasonable terms in accordance with normal trade practices.

              "NET CASH PROCEEDS" means:

(a) with respect to any Asset Sale, the proceeds  thereof in the form of cash or
Cash Equivalents,  including payments in respect of deferred payment obligations
when  received in the form of, or stock or other  assets  when  disposed of for,
cash or Cash  Equivalents  (except  to the  extent  that  such  obligations  are
financed  or  sold  with  recourse  to the  Company  or any  Restricted  Company
Subsidiary),  net of (i)  brokerage  commissions  and  other  fees and  expenses
(including  fees and expenses of legal counsel and investment  banks) related to
such Asset Sale, (ii) provisions for all taxes payable as a result of such Asset
Sale,  (iii)  payments  made  to  retire  Indebtedness  where  payment  of  such
Indebtedness  is secured by the assets or  properties  which are the  subject of
such Asset Sale, (iv) amounts  required to be paid to any Person (other than the
Company or any Restricted Company  Subsidiary)  owning a beneficial  interest in
the assets subject to the Asset Sale and (v) appropriate  amounts to be PROVIDED
by the Company or any Restricted  Company  Subsidiary,  as the case may be, as a
reserve required in accordance with GAAP against any liabilities associated with
such  Asset  Sale  and  retained  by  the  Company  or  any  Restricted  Company
Subsidiary,  as the case may be,  after such Asset Sale,  including  pension and
other post-employment benefit liabilities,  liabilities related to environmental
matters and liabilities under any  indemnification  obligations  associated with
such Asset Sale, all as reflected in an Officers'  Certificate  delivered to the
Trustee; and

(b) with respect to any issuance or sale of Capital  Stock or options,  warrants
or rights to purchase  Capital Stock, or debt  securities or Redeemable  Capital
Stock that has been converted into or exchanged for Qualified  Capital Stock, as
referred to in the definition of "Restricted  Payment" contained in this Section
103,  the  proceeds  of  such  issuance  or  sale  in the  form  of cash or Cash
Equivalents,  including payments in respect of deferred payment obligations when
received in the form of, or stock or other assets when  disposed of for, cash or
Cash  Equivalents  (except to the extent that such  obligations  are financed or
sold with recourse to the Parent or any Subsidiary of the Parent),  net of fees,
commissions and expenses  actually  incurred in connection with such issuance or
sale and net of taxes paid or payable as a result thereof.

              "PERMITTED INDEBTEDNESS" means:

(a)  Indebtedness  of the  Company  pursuant  to the Notes or of any  Restricted
Company Subsidiary pursuant to a Guarantee of the Notes;

(b) Indebtedness of the Company or any Restricted Company Subsidiary outstanding
on the Issue Date;

(c) Indebtedness of the Company owing to any Restricted  Company Subsidiary (but
only  so  long  as  such  Indebtedness  is  held  by  such  Restricted   Company
Subsidiary);  PROVIDED  that any  Indebtedness  of the Company owing to any such
Restricted Company Subsidiary is subordinated in right of payment from and after
such time as the Notes shall become due and payable (whether at Stated Maturity,
by  acceleration  or otherwise) to the payment and  performance of the Company's
obligations under the Notes; and PROVIDED further that any transaction  pursuant
to which any Restricted  Company  Subsidiary to which such  Indebtedness is owed
ceases to be a Restricted Company Subsidiary shall be deemed to be an incurrence
of Indebtedness by the Company that is not permitted by this clause (c);

(d) Indebtedness of any Restricted Company Subsidiary owing to the Company or of
any  Restricted   Company   Subsidiary  owing  to  another   Restricted  Company
Subsidiary;

(e) Indebtedness of the Company or any Restricted  Company Subsidiary in respect
of  performance,  surety or appeal  bonds or under  letter of credit  facilities
PROVIDED  in the  ordinary  course of  business  and,  in the case of letters of
credit, under which recourse to the Company is limited to the cash securing such
letters of credit;

(f)  Indebtedness  of the Company under  Currency  Agreements  and Interest Rate
Agreements  entered into in the ordinary course of business;  PROVIDED that such
agreements  are  designed  to  protect  the  Company or any  Restricted  Company
Subsidiary  against,  or manage exposure to,  fluctuations in currency  exchange
rates and interest rates, respectively, and that such agreements do not increase
the  Indebtedness of the obligor  outstanding at any time other than as a result
of  fluctuations  in foreign  currency  exchange  rates or interest  rates or by
reason of fees, indemnities and compensation payable thereunder;

(g) Telecommunications Indebtedness and any Indebtedness issued in exchange for,
or  the  net  proceeds  of  which  are  used  to   refinance  or  refund,   such
Telecommunications  Indebtedness  in an  amount  not to  exceed  the  amount  so
refinanced or refunded (plus premiums, accrued interest, and reasonable fees and
expenses);

(h) Indebtedness of the Company or any Restricted Company Subsidiary  consisting
of   guarantees,   indemnities   or   obligations   in   connection   with   (1)
Telecommunications  Indebtedness, (2) Indebtedness permitted under clause (j) or
(m) of this  "Permitted  Indebtedness"  definition or (3) in respect of purchase
price  adjustments  in connection  with the  acquisition  of or  disposition  of
assets, including shares of Capital Stock;

(i)  Indebtedness  of the Company not to exceed,  at any time  outstanding,  2.0
times the Net Cash  Proceeds  from the  issuance  and sale after the Issue Date,
other than to a Restricted Company Subsidiary, of Qualified Capital Stock of the
Company,  to the  extent  such Net  Cash  Proceeds  have  not been  used to make
Restricted Payments pursuant to clause (a)(3)(B) or clauses (b)(ii) and (iii) of
the  definition of  "Restricted  Payment" or to make any  Permitted  Investments
under clause (h) of the definition of Permitted Investments;  PROVIDED that such
Indebtedness  does not mature prior to the Stated  Maturity of the Notes and has
an Average Life longer than the Notes;

(j) Indebtedness of the Company or any Restricted  Company  Subsidiary under one
or more Credit Facilities;  PROVIDED that the aggregate  principal amount of any
Indebtedness  incurred  pursuant  to this  clause  (j)  (including  any  amounts
refinanced  or  refunded  under  this  clause  (j)) does not  exceed at any time
outstanding the greater of (x) 80% of eligible  consolidated accounts receivable
of the Company as of the last fiscal quarter for which financial  statements are
prepared or (y)  $50,000,000  or the  equivalent  thereof in one or more foreign
currencies;  and any Indebtedness  incurred in exchange for, or the net proceeds
of which are used to refinance or refund,  Indebtedness issued under this clause
(j) in an amount  not to exceed  the  amount so  refinanced  or  refunded  (plus
premiums, accrued interest, and reasonable fees and expenses);

(k)  Indebtedness of the Company or a Restricted  Company  Subsidiary  issued in
exchange  for,  or the net  proceeds of which are used to  refinance  or refund,
then-outstanding Indebtedness of the Company or a Restricted Company Subsidiary,
incurred  under the ratio test set forth in clause (i) or (ii) of the definition
of "Allowable  Company  Indebtedness" or under clauses (b) through (f), (h), (i)
and (m) of this  definition of "Permitted  Indebtedness,"  and any  refinancings
thereof in an amount not to exceed the amount so  refinanced  or refunded  (plus
premiums,  accrued  interest,  and reasonable fees and expenses);  PROVIDED that
such new  Indebtedness  shall only be permitted  under this clause (k) if (A) in
case the Notes are  refinanced  in part,  or the  Indebtedness  to be refinanced
ranks  equally  with the Notes,  such new  Indebtedness,  by its terms or by the
terms of any agreement or instrument  pursuant to which such new Indebtedness is
issued or remains  outstanding,  is  expressly  made to rank  equally  with,  or
subordinate  in  right of  payment  to,  the  remaining  Notes,  (B) in case the
Indebtedness  to be refinanced is subordinated in right of payment to the Notes,
such  new  Indebtedness,  by its  terms  or by the  terms  of any  agreement  or
instrument  pursuant  to which  such  new  Indebtedness  is  issued  or  remains
outstanding  is expressly  made  subordinate in right of payment to the Notes at
least to the same extent that the  Indebtedness to be refinanced is subordinated
to the  Notes  and (C)  such  new  Indebtedness,  determined  as of the  date of
incurrence  of such new  Indebtedness,  does  not  mature  prior  to the  Stated
Maturity of the Indebtedness to be refinanced or refunded,  and the Average Life
of such new Indebtedness is at least equal to the remaining  Average Life of the
Indebtedness being refinanced or refunded; PROVIDED further that no Indebtedness
incurred  under this  clause  (k) in  exchange  for,  or the  proceeds  of which
refinance or refund,  any  Indebtedness  incurred under the ratio test set forth
under clause (i) or (ii) of the definition of "Allowable  Company  Indebtedness"
will mature  prior to the Stated  Maturity of the Notes or have an Average  Life
shorter than the Notes;  PROVIDED  further that in no event may  Indebtedness of
the Company be refinanced by means of any Indebtedness of any Restricted Company
Subsidiary issued pursuant to this clause (k);

(l)  Indebtedness  arising  by  reason  of the  recharacterization  of a sale of
accounts receivable to an Accounts Receivable Subsidiary; and

(m) Indebtedness of the Company or any Restricted Company Subsidiary in addition
to that permitted to be incurred pursuant to clauses (a) through (l) above in an
aggregate  principal  amount  not in excess of  $30,000,000  (or the  equivalent
thereof in one or more foreign currencies) at any time outstanding.

                      "PERMITTED INVESTMENT" means any of the following:

(a) Investments in Cash Equivalents;  PROVIDED that the term "with a maturity of
180  days or  less"  in  clauses  (a),  (b) and (c) of the  definition  of "Cash
Equivalents"  is  changed  to "with a  maturity  of one  year or  less"  for the
purposes of this definition of "Permitted Investments" only;

(b)      Investments in the Company or any Restricted Company Subsidiary;

(c) Investments by the Company or any Restricted  Company  Subsidiary in another
Person  if, as a result of such  Investment,  (i) such  other  Person  becomes a
Restricted   Company   Subsidiary  or  (ii)  such  other  Person  is  merged  or
consolidated  with or into, or transfers or conveys all or substantially  all of
its assets to, the Company or a Restricted Company Subsidiary;

(d) Investments in the form of intercompany Indebtedness to the extent permitted
under clauses (c) and (d) of the definition of "Permitted Indebtedness;"

(e) Investments in existence on the Issue Date;

(f)  Investments in the Pledged  Securities to the extent required by the Pledge
Agreement;

(g) Investments in an amount not to exceed $1,000,000 (or the equivalent thereof
in one or more foreign currencies) at any one time outstanding;

(h)  Investments  in an  aggregate  amount not to exceed the sum of (1) Invested
Capital,  (2) the Fair Market Value of Qualified  Capital  Stock of the Company,
Redeemable  Capital  Stock  of the  Company,  or  Indebtedness  of  the  Company
convertible into Qualified Capital Stock of the Company, in the latter two cases
upon such redemption or conversion  thereof into Qualified  Capital Stock of the
Company,  issued  by  the  Company  or  any  Restricted  Company  Subsidiary  as
consideration for any such Investments made pursuant to this clause (h), and (3)
in the case of the  disposition or repayment of any Investment  made pursuant to
this  clause  (h)  after  the  Issue  Date  (including  by  redesignation  of an
Unrestricted Company Subsidiary to a Restricted Company  Subsidiary),  an amount
equal to the lesser of the return of capital with respect to such Investment and
the initial  amount of such  Investment,  in either  case,  less the cost of the
disposition  of such  Investment;  PROVIDED,  however,  that the  amount  of any
Permitted  Investments  under  this  clause  (h)  shall  be  excluded  from  the
computation of the amount of any Restricted Payment;

(i) Investments in trade receivables,  prepaid expenses,  negotiable instruments
held for collection and lease,  utility and worker's  compensation,  performance
and other similar deposits or escrow;

(j) Loans,  advances and  extensions of credit to employees made in the ordinary
course of business of the Company not in excess of $500,000  (or the  equivalent
thereof in one or more foreign currencies) in any fiscal year;

(k)  Bonds,  notes,  debentures  or  other  securities  evidencing  Indebtedness
received as a result of Asset Sales permitted under Section 1017);

(l) Endorsements for collection or deposit in the ordinary course of business by
the  Company or any  Restricted  Company  Subsidiary  of bank drafts and similar
negotiable  instruments  of any other  person  received as payment for  ordinary
course of business trade receivables;

(m)  Investments  deemed to have been made as a result of the  acquisition  of a
Person  that at the  time  of such  acquisition  held  instruments  constituting
Investments that were not acquired in  contemplation  of, or in connection with,
the acquisition of such Person;

(n) Investments in or acquisitions of Capital Stock, indebtedness, securities or
other property of Persons (other than Affiliates of the Company) received by the
Company or any of its  Restricted  Company  Subsidiaries  in the  bankruptcy  or
reorganization  of or by such Person or any exchange of such Investment with the
issuer  thereof  or  taken in  settlement  of or  other  resolution  of claim or
disputes, and, in each case, extensions, modifications and renewals thereof;

(o)  Investments  in any Person to which  Telecommunications  Assets  used in an
Initial  System  have been  transferred  and which  person has  PROVIDED  to the
Company or a Restricted Company Subsidiary the right to use such assets pursuant
to an Incumbent Agreement; PROVIDED that, in the good faith determination of the
Board of  Directors,  the present  value of the future  payments  expected to be
received by the Company in respect of any such  Investment  plus the Fair Market
Value of any capital stock or other securities received in connection  therewith
shall be at least equal to the Fair Market Value of such Investment; and

(p)  Investments in one or more  Permitted  Telecommunications  Joint  Ventures;
PROVIDED that the total original cost of all such  Permitted  Telecommunications
Joint  Ventures  plus the  cost or Fair  Market  Value,  as  applicable,  of all
additions  thereto less the sum of all amounts received as returns thereon shall
not  exceed  $20,000,000  (or the  equivalent  thereof  in one or  more  foreign
currencies).

                      "PERMITTED LIENS" means:

(a) Liens existing on the Issue Date;

(b) Liens on any property or assets of a Restricted  Company  Subsidiary granted
in favor of the Company or any Restricted Company Subsidiary;

(c) Liens on any  property  or assets of the Company or any  Restricted  Company
Subsidiary securing the Notes or any Guarantees thereof;

(d) any interest or title of a lessor under any Capitalized  Lease Obligation or
operating lease permitted by this Indenture;

(e) Liens  securing  Indebtedness  incurred under clauses (g), (j) or (m) of the
definition of "Permitted Indebtedness";

(f)  statutory  Liens  of  landlords  and  carriers,  warehousemen,   mechanics,
suppliers,  materialmen,  repairmen or other like Liens  arising in the ordinary
course of business of the Company or any Restricted Company Subsidiary and, with
respect  to  amounts  not yet  delinquent  or being  contested  in good faith by
appropriate proceeding,  if a reserve or other appropriate provision, if any, as
required in conformity with GAAP shall have been made therefor;

(g) Liens for taxes,  assessments,  government  charges or claims that are being
contested  in good faith by  appropriate  proceedings  promptly  instituted  and
diligently conducted and if a reserve or other appropriate provision, if any, as
shall be required in conformity with GAAP shall have been made therefor;

(h) Liens incurred or deposits made to secure the performance of tenders,  bids,
leases,  statutory obligations,  surety and appeal bonds,  government contracts,
performance  bonds,  escrows and other  obligations of a like nature incurred in
the ordinary course of business (other than contracts for the payment of money);

(i)  easements,  rights-of-way,   restrictions  and  other  similar  charges  or
encumbrances  not  interfering in any material  respect with the business of the
Company or any Restricted Company Subsidiary  incurred in the ordinary course of
business;

(j) Liens  arising  by reason of any  judgment,  decree or order of any court so
long as such Lien is adequately  bonded and any  appropriate  legal  proceedings
that may have been duly  initiated  for the review of such  judgment,  decree or
order shall not have been  finally  terminated  or the period  within which such
proceedings may be initiated shall not have expired;

(k) Liens securing Acquired Indebtedness created prior to (and not in connection
with or in contemplation  of) the incurrence of such Indebtedness by the Company
or any Restricted Company Subsidiary; PROVIDED that such Lien does not extend to
any property or assets of the Company or any Restricted Company Subsidiary other
than the assets  acquired in  connection  with the  incurrence  of such Acquired
Indebtedness;

(l) Liens securing  obligations of the Company under Interest Rate Agreements or
Currency Agreements  permitted to be incurred under clause (f) of the definition
of "Permitted Indebtedness" or any collateral for the Indebtedness to which such
Interest Rate Agreements or Currency Agreements relate;

(m) Liens  incurred  or  deposits  made in the  ordinary  course of  business in
connection with workers' compensation, unemployment insurance and other types of
social security;

(n) Liens  securing  reimbursement  obligations of the Company or any Restricted
Company Subsidiary with respect to letters of credit that encumber documents and
other property  relating to such letters of credit and the products and proceeds
thereof;

(o) Liens arising from purchase  money  mortgages  and purchase  money  security
interests;  PROVIDED that (i) the related  Indebtedness  shall not be secured by
any property or assets of the Company or of any  Restricted  Company  Subsidiary
other than the property and assets so acquired and (ii) the Lien  securing  such
Indebtedness shall be created within 60 days of such acquisition;

(p) Liens securing the Escrow Account,  the Pledged  Securities and the proceeds
thereof and the security interest created by the Pledge Agreement;

(q) any  extension,  renewal or  replacement,  in whole or in part,  of any Lien
described  in the  foregoing  clauses (a) through  (o);  PROVIDED  that any such
extension,  renewal or replacement  shall be no more restrictive in any material
respect than the Lien so  extended,  renewed or replaced and shall not extend to
any additional property or assets;

(r) Liens with  respect  to the  equipment  and  related  assets of the  Company
installed  on its  network  in favor of  Persons  that  have  licensed,  leased,
transferred  or granted to the Company or any  Restricted  Company  Subsidiary a
right  to  use   Telecommunications   Assets  or   financed   the   purchase  of
Telecommunications  Assets or securing  the  obligations  of the Company or such
Restricted Company Subsidiary under an Incumbent  Agreement;  PROVIDED that such
Liens will (1) be created on terms that the Company reasonably believes to be no
less  favorable  to the  Company  than Liens  granted  under  clause (e) of this
definition  and (2) not secure  any  Indebtedness  in excess of the Fair  Market
Value of the equipment and assets so secured;

(s)  Liens  relating  to  revenues  of the  Company  or any  Restricted  Company
Subsidiary arising as a result of obligations under an Incumbent Agreement; and

(t) Liens on the  property  or assets or Capital  Stock of  Accounts  Receivable
Subsidiaries  and Liens  arising out of any sale of Accounts  Receivable  in the
ordinary   course  of  business   (including  in  connection  with  a  financing
transaction) to or by an Accounts  Receivable  Subsidiary or to Persons that are
not Affiliates of the Company.

                      "PERMITTED RESTRICTION" means:

(a) any agreement or instrument  governing or relating to Indebtedness under any
senior financing  facility permitted to be incurred under clause (g), (j) or (m)
of the definition of Permitted  Indebtedness if such  encumbrance or restriction
applies  only (A) to amounts  which at any point in time (other than during such
periods as are  described  in the  following  clause  (B)) (1) exceed  scheduled
amounts due and payable (or which are to become due and payable  within 30 days)
in respect of the Notes or this Indenture for interest,  premium, and Liquidated
Damages,  if any,  and  principal  less the  amount  of cash  that is  otherwise
available to the Company at such time for the payment of  interest,  premium and
Liquidated  Damages,  if any,  and  principal  due and payable in respect of the
Notes or this  Indenture or (2) if paid,  would result in an event  described in
the  following  clause (B) of this  sentence,  or (B) during the tendency of any
event that causes,  permits or,  after  notice or lapse of time,  would cause or
permit the holder or holders of such  Indebtedness to declare such  Indebtedness
to be immediately due and payable or to require cash  collateralization  or cash
cover for such Indebtedness for so long as such cash  collateralization  or cash
cover has not been provided; and

(b) any encumbrance or restriction under the Vendor Credit Facility.

              "PERMITTED  TELECOMMUNICATIONS  ASSET  SALE"  means any  transfer,
conveyance,  sale,  lease or other  disposition  of a  capital  asset  that is a
Telecommunications  Asset,  the  proceeds  of  which  are  treated  as  revenues
(including deferred revenues) by the Company in accordance with GAAP.

              "PERMITTED  TELECOMMUNICATIONS JOINT VENTURE" means a corporation,
partnership or other entity engaged in one or more  Telecommunications  Business
in which the Company owns, directly or indirectly, an equity interest.

              "PERMITTED  TRANSACTION"  means  a  transaction  or  a  series  of
transactions  pursuant to which the Company  consolidates with or merges with or
into any other Person or sells, assigns, conveys, transfers, leases or otherwise
disposes of all or  substantially  all of its properties and assets to any other
Person or Persons, or pursuant to which any Restricted Company Subsidiary enters
into any such transaction or series of  transactions,  PROVIDED always that such
transaction or series of  transactions,  shall not be permitted if it or they in
the aggregate would result in the sale, assignment,  conveyance, transfer, lease
or other disposition of all or substantially all of the properties and assets of
the Company and its Restricted  Company  Subsidiaries on a consolidated basis to
any other  Person or Persons,  unless at the time and  immediately  after giving
effect thereto:

(i)    either (A) the Company  shall be the  continuing  corporation  or (B) the
              Person (if other than the Company) formed by such consolidation or
              into which the Company or such  Restricted  Company  Subsidiary is
              merged  or  the  Person  that   acquires   by  sale,   assignment,
              conveyance,  transfer,  lease or disposition all or  substantially
              all the  properties  and assets of the Company and its  Restricted
              Company  Subsidiaries on a consolidated  basis, as the case may be
              (the  "Surviving  Company  Entity"),  (1)  shall be a  corporation
              organized and validly existing under the laws of the United States
              of America,  any state thereof or the District of Columbia and (2)
              shall  expressly  assume,  by a  supplemental  indenture  to  this
              Indenture  in form  satisfactory  to the  Trustee,  the  Company's
              obligations pursuant to the Notes for the due and punctual payment
              of the  principal  of,  premium,  if any,  and interest on all the
              Notes and the  performance and observance of every covenant herein
              on the part of the Company to be performed or observed;

(b) immediately  before and immediately  after giving effect to such transaction
or series of  transactions  on a pro forma basis (and treating any obligation of
the Company or any Restricted Company Subsidiary  incurred in connection with or
as a result  of such  transaction  or  series of  transactions  as  having  been
incurred at the time of such transaction),  no Default or Event of Default shall
have occurred and be continuing;

(c)  immediately   after  giving  effect  to  such   transaction  or  series  of
transactions  on a pro forma basis (on the  assumption  that the  transaction or
series of  transactions  occurred  on the first  day of the two  fiscal  quarter
period ending  immediately  prior to the  consummation  of such  transaction  or
series of  transactions,  with the appropriate  adjustments  with respect to the
transaction  or  series  of  transactions  being  included  in  such  pro  forma
calculation), the Company (or the Surviving Company Entity if the Company is not
the  continuing  obligor  hereunder)  could incur at least  $1.00 of  additional
Allowable Company Indebtedness (other than Permitted Indebtedness);  and (d) the
Company  or such  Person  shall  have  delivered  to the  Trustee,  in form  and
substance  reasonably  satisfactory  to the Trustee,  an  Officers'  Certificate
(attaching the computations to demonstrate compliance with clause (c) above) and
an Opinion of Counsel,  each  stating  that such  consolidation,  merger,  sale,
assignment,  conveyance,  transfer  or  lease  or other  disposition  and,  if a
supplemental  indenture is required in connection  with such  transaction,  such
supplemental  indenture,  constitute a Permitted Transaction for the purposes of
this definition and that all conditions  precedent  herein PROVIDED for relating
to such transaction have been complied with.

                  PROVIDED that:

(i)           any merger or  consolidation  of a Restricted  Company  Subsidiary
              with and into the Company  (with the Company  being the  surviving
              entity) or another  Restricted Company Subsidiary need only comply
              with  clauses (c) and (d) above in order to qualify as a Permitted
              Transaction.  Further,  any  reincorporation of the Company or any
              Restricted  Company Subsidiary under the laws of the United States
              of America, any state thereof or the District of Columbia shall be
              a Permitted Transaction;

(ii)          Upon  any  consolidation  of the  Company  with or  merger  of the
              Company  with  or  into  any  other   corporation   or  any  sale,
              assignment,  conveyance,  transfer,  lease or  disposition  of the
              properties and assets of the Company  substantially as an entirety
              to any Person that qualifies as a Permitted  Transaction  pursuant
              to clauses (a) through (d) of this definition in which the Company
              is not the continuing  obligor  hereunder,  the Surviving  Company
              Entity shall succeed to, and be substituted  for, and may exercise
              every  right and power of,  the  Company  hereunder  with the same
              effect as if such  successor  Person had been named as the Company
              herein.  When a successor  assumes all of the  obligations  of its
              predecessor under the Indenture, the predecessor shall be released
              from such obligations; PROVIDED that, in the case of a transfer by
              lease,  the predecessor  shall not be released from the payment of
              principal of, premium and Liquidated Damages, if any, and interest
              on the Notes.

(iii)         If, upon any such  consolidation  of the Company with or merger of
              the  Company  into  any  other  corporation,  or  upon  any  sale,
              assignment,  conveyance,  lease or transfer of the property of the
              Company  substantially  as an  entirety to any other  Person,  any
              property or assets of the Company would  thereupon  become subject
              to any Lien,  then unless such Lien  qualifies as a Permitted Lien
              without equally and ratably securing the Notes, the Company, prior
              to  or  simultaneously  with  such  consolidation,  merger,  sale,
              assignment,  conveyance,  lease  or  transfer,  shall  as to  such
              property or assets,  secure the Notes Outstanding  (together with,
              if the Company  shall so determine any other  Indebtedness  of the
              Company  now  existing  or   hereinafter   created  which  is  not
              subordinate  in right of payment to the Notes) equally and ratably
              with (or prior to) the Indebtedness which upon such consolidation,
              merger,  conveyance,  lease or transfer is to become secured as to
              such property or assets by such Lien, or shall cause such Notes to
              be so secured.

              "RESTRICTED  PAYMENT" means any of the following  actions  whether
taken  directly or indirectly and whether taken by the Company or any Restricted
Company Subsidiary:

 (a)                            (1) the  declaration  or payment of any dividend
              on, or making of any distribution to holders of, any shares of the
              Capital   Stock  of  the   Company   (other  than   dividends   or
              distributions  payable  solely in shares of its Qualified  Capital
              Stock or in  options,  warrants  or other  rights to acquire  such
              shares of Qualified Capital Stock);

                            (2) purchasing,  redeeming or otherwise acquiring or
              retiring for value, directly or indirectly,  any shares of Capital
              Stock of the Company or any Capital Stock of any of its Affiliates
              (other than Capital Stock of the Parent,  any  Subsidiaries of the
              Parent that are not Company Restricted Subsidiaries and any Wholly
              Owned  Restricted  Subsidiary)  or any options,  warrants or other
              rights to acquire such shares of Capital Stock;

                            (3)   making   any   principal    payment   on,   or
              repurchasing,  redeeming,  defeasing  or  otherwise  acquiring  or
              retiring for value,  prior to the Stated Maturity of any principal
              payment or any  sinking  fund  payment,  any  Indebtedness  of the
              Company that is expressly  subordinated in right of payment to the
              Notes; or

                            (4) making any Investment  (other than any Permitted
              Investment) in any Person;

         (such  payments or other actions  described in (but not excluded  from)
         clauses  (1) through (4) are  collectively  referred to as  "Restricted
         Payments");  unless at the time of, and immediately after giving effect
         to, the proposed  Restricted Payment (the amount of any such Restricted
         Payment,  if other than cash,  as  determined by the Board of Directors
         the Company, whose determination shall be conclusive and evidenced by a
         Board  Resolution),  (A) no  Default  or Event of  Default  shall  have
         occurred and be continuing,  (B) the Company could incur at least $1.00
         of additional  Allowable  Company  Indebtedness  (other than  Permitted
         Indebtedness)  and (C) the aggregate amount of all Restricted  Payments
         declared or made after the Issue Date shall not exceed the sum of:

(i)           (A) 100% of  Consolidated  Operating Cash Flow of the Company less
              1.5 times  Consolidated  Interest Expense of the Company or (B) if
              Consolidated  Operating  Cash Flow of the  Company is a  negative,
              minus 100% of such negative  amount,  in each case on a cumulative
              basis for the period  beginning on the first day of the  Company's
              first fiscal  quarter  after the Issue Date and ending on the last
              day of the Company's  last fiscal quarter ending prior to the date
              of such proposed Restricted Payment; plus

(ii)          the  aggregate  Net Cash  Proceeds  and the Fair  Market  Value of
              Telecommunications Assets or Voting Stock of a Person that becomes
              a Restricted Subsidiary,  the assets of which consist primarily of
              Telecommunications Assets, received by the Company after the Issue
              Date as capital  contributions or from the issuance or sale (other
              than to any  Subsidiary)  of shares of Qualified  Capital Stock of
              the Company  (including upon the exercise of options,  warrants or
              rights)  or  warrants,  options  or rights to  purchase  shares of
              Qualified Capital Stock of the Company; plus

(iii)         the  aggregate  Net Cash  Proceeds  and the Fair  Market  Value of
              Telecommunications Assets or Voting Stock of a Person that becomes
              a Restricted Subsidiary,  the assets of which consist primarily of
              Telecommunications Assets, received by the Company after the Issue
              Date from the issuance or sale (other than to any  Subsidiary)  of
              debt  securities  or  Redeemable  Capital  Stock  that  have  been
              converted  into or exchanged  for  Qualified  Capital Stock of the
              Company,  together  with the  aggregate  Net Cash Proceeds and the
              Fair Market Value of Telecommunications  Assets or Voting Stock of
              a Person that becomes a Restricted Subsidiary, the assets of which
              consist primarily of  Telecommunications  Assets,  received by the
              Company at the time of such conversion or exchange; plus

(iv)          to the extent not  otherwise  included in  Consolidated  Operating
              Cash Flow of the  Company,  an amount  equal to the sum of (a) the
              net reduction in Investments (other than Permitted Investments) in
              any Person (other than a Restricted Subsidiary) resulting from the
              payment in cash of  dividends,  repayments of loans or advances or
              other  transfers  of  assets,  in each case to the  Company or any
              Restricted  Subsidiary  after the Issue Date from such  Person and
              (b) the amount of any net reduction in Investments  resulting from
              the  redesignation  of an  Unrestricted  Company  Subsidiary  as a
              Restricted   Company   Subsidiary   (valued  as  provided  in  the
              definition  of  "Investment")  at the time of such  redesignation;
              PROVIDED that, in the case of (a) or (b) above,  the foregoing sum
              shall not  exceed  the total  amount of  Investments  (other  than
              Permitted   Investments)   previously   made  in  such  Person  or
              Unrestricted  Company Subsidiary by the Company and its Restricted
              Company Subsidiaries.

(b)  Notwithstanding  the above,  the  following  actions by the  Company or any
Restricted Company Subsidiary shall not constitute  Restricted  Payments so long
as (with  respect  to  clauses  (1)  through  (6)  below) no Default or Event of
Default shall have occurred and be continuing:

(1)      the  payment  of  any  dividend  within  60  days  after  the  date  of
         declaration thereof, if at such date of declaration the payment of such
         dividend would have complied with the provisions of paragraph (a) above
         and such  payment  will be  deemed  to have  been  paid on such date of
         declaration for purposes of the  calculation  required by paragraph (a)
         above;

(2)      the purchase,  redemption or other  acquisition or retirement for value
         of any shares of Capital  Stock of the Company (x) in exchange  for, or
         out of the Net Cash Proceeds of a substantially concurrent issuance and
         sale (other than to a Subsidiary) of, shares of Qualified Capital Stock
         of the  Company;  (y) that are held by former  officers,  employees  or
         directors (or their estates or  beneficiaries  under their  estates) of
         the Company or any of its  Subsidiaries;  PROVIDED  that the  aggregate
         amount of such purchase,  redemption or other acquisition or retirement
         for value  under  this  clause  (y) will not  exceed  $250,000  (or the
         equivalent  thereof  in one or more  foreign  currencies)  in any given
         fiscal year; or (z) pursuant to the employment  agreement  dated August
         4, 1997,  between the Company and Richard Jalkut,  as amended and as in
         effect on the Issue  Date (and any  extensions  or  renewals  thereof);
         PROVIDED  that  the  amount  of  such  purchase,  redemption  or  other
         acquisition  or  retirement  for value  under this  clause (z) will not
         exceed  $1,000,000  (or the  equivalent  thereof in one or more foreign
         currencies) in any given fiscal year;

(3)      the purchase, redemption, defeasance or other acquisition or retirement
         for  value  of  any  Indebtedness  of the  Company  that  is  expressly
         subordinated  in right of payment to the Notes in exchange  for, or out
         of the Net Cash  Proceeds of a  substantially  concurrent  issuance and
         sale (other than to a Subsidiary) of, shares of Qualified Capital Stock
         of the Company;

(4)      the  purchase  of any  Indebtedness  of the Company  that is  expressly
         subordinated  in right of payment to the Notes at a purchase  price not
         greater  than 101% of the  principal  amount  thereof in the event of a
         Change of  Control in  accordance  with  provisions  similar to Section
         1010;  PROVIDED  that prior to such  purchase  the Company has made the
         Change of Control  Offer as provided in such  covenant  with respect to
         the Notes and has purchased  all Notes validly  tendered for payment in
         connection with such Change of Control Offer;

(5)      the purchase, redemption, defeasance or other acquisition or retirement
         for value of Indebtedness  (other than Redeemable Capital Stock) of the
         Company that is expressly subordinated in right of payment to the Notes
         in  exchange  for, or out of the Net Cash  Proceeds of a  substantially
         concurrent incurrence (other than to a Subsidiary) of, new Indebtedness
         of the Company  that is expressly  subordinated  in right of payment to
         the Notes, so long as (A) the principal amount of such new Indebtedness
         does not exceed the principal  amount (or, if such  Indebtedness  being
         refinanced  provides  for an  amount  less  than the  principal  amount
         thereof  to be due  and  payable  upon a  declaration  of  acceleration
         thereof,  such lesser  amount as of the date of  determination)  of the
         Indebtedness  being  so  purchased,  redeemed,  defeased,  acquired  or
         retired,  plus the lesser of (x) the amount of any premium  required to
         be paid in connection  with such  refinancing  pursuant to the terms of
         the  Indebtedness  being  refinanced  or (y) the amount of any  premium
         reasonably  determined by the Company as necessary to  accomplish  such
         refinancing,  plus,  in either  case,  the  amount of  expenses  of the
         Company  incurred in  connection  with such  refinancing;  (B) such new
         Indebtedness  is  subordinated  to the Notes to the same extent as such
         Indebtedness so purchased, redeemed, defeased, acquired or retired; and
         (C) such new  Indebtedness  has an Average Life longer than the Average
         Life of the  Indebtedness  being refinanced and a final Stated Maturity
         of principal later than the final Stated  Maturity of the  Indebtedness
         being refinanced; and

(6)      the  payment of  cash  in  lieu of  fractional shares of  Common  Stock
         pursuant to the Warrant Agreement.

                  The  actions  described  in clauses (1) through (4) and (6) of
this  paragraph  (b) shall be  Restricted  Payments  that shall be  permitted in
accordance  with this  paragraph  (b) but shall  reduce  the  amount  that would
otherwise be available for Restricted Payments under clause (C) of paragraph (a)
above.  The  actions  described  in clause  (5) of this  paragraph  (b) shall be
Restricted  Payments that shall be permitted in accordance  with this  paragraph
(b) and shall not reduce  the  amount  that would  otherwise  be  available  for
Restricted Payments under clause (C) of paragraph (a).


              "RESTRICTED  SUBSIDIARY" means any Subsidiary of the Company other
than an Unrestricted Company Subsidiary.

              "SALE-LEASEBACK   TRANSACTION"   means  any  direct  or   indirect
arrangement, or series of related arrangements,  with any Person (other than the
Company or a Restricted  Company  Subsidiary) or to which any Person (other than
the Company or a Restricted  Company  Subsidiary) is a party,  providing for the
leasing to the Company or to a Restricted Company Subsidiary of any property for
an aggregate term exceeding three years,  whether owned by the Company or by any
Subsidiary of the Company at the Issue Date or later acquired, which has been or
is to be  sold  or  transferred  by  the  Company  or  such  Restricted  Company
Subsidiary  to such  Person or to any other  Person from whom funds have been or
are to be  advanced by such Person on the  security of such  property;  PROVIDED
that the  transfer  by the  Company  or any  Restricted  Company  Subsidiary  of
Telecommunications  Assets to, and the leasing by the Company or any  Restricted
Company  Subsidiary  of such assets from, a Permitted  Telecommunications  Joint
Venture shall not constitute a Sale-Leaseback Transaction.

              "SIGNIFICANT SUBSIDIARY" means, at any date of determination,  any
Restricted Company Subsidiary that, together with its Subsidiaries,  (i) for the
most  recent  fiscal  year of the  Company  accounted  for more  than 10% of the
consolidated  revenues of the Company and its Restricted  Company  Subsidiaries,
(ii) as of the end of such  fiscal  year,  was the owner of more than 10% of the
consolidated assets of the Company and its Restricted Company  Subsidiaries,  or
(iii) owns one or more FCC licenses the  aggregate  cost or Fair Market Value of
which  represents  5% or more of the net  asset  value  of the  Company  and its
Restricted  Company  Subsidiaries on a consolidated  basis as of the end of such
fiscal year, in the case of (i), (ii) or (iii) as set forth on the most recently
available consolidated financial statements of the Company for such fiscal year.

              "TELECOMMUNICATIONS  ASSETS"  means,  with  respect to any Person,
assets  (including  rights of way,  trademarks and licenses)  other than current
assets that are utilized by such Person, directly or indirectly, for the design,
development,  construction,   installation,  integration  or  provision  of  the
Company's network,  including any businesses or services in which the Company is
currently   engaged   and   including   any   computer   systems   used   in   a
Telecommunications  Business.  Telecommunications Assets also include 66 2/3% of
the Voting  Stock of another  Person,  PROVIDED  that  substantially  all of the
assets of such other Person consist of  Telecommunications  Assets, and PROVIDED
further such Voting  Stock shall be held by the Company or a Restricted  Company
Subsidiary,  such other Person either is, or immediately  following the relevant
transaction  shall become,  a Restricted  Subsidiary of the Company  pursuant to
this Indenture or a Permitted  Telecommunications  Joint Venture  subject to the
limitations  set  forth  under  clause  (p)  of  the  definition  of  "Permitted
Investment" contained in this Section 103. The determination of what constitutes
Telecommunications  Assets shall be made by the Board of Directors and evidenced
by a Board Resolution delivered to the Trustee.

              "TELECOMMUNICATIONS   BUSINESS"   means,   the   business  of  (i)
transmitting,  or providing  services  relating to the  transmission  of, voice,
video  or  data  through   owned  or  leased   transmission   facilities,   (ii)
constructing,  creating,  developing,  acquiring or marketing  Telecommunication
Assets or other  communications  related network  equipment,  software and other
devices  for  use  in  a   telecommunications   business  or  (iii)  evaluating,
participating  or pursuing any other activity or  opportunity  that is primarily
related to those  identified  in clause  (i) or (ii)  above;  PROVIDED  that the
determination of what constitutes a Telecommunications Business shall be made in
good faith by the board of directors of the Company.

              "TELECOMMUNICATIONS   INDEBTEDNESS"  means,  Indebtedness  of  the
Company or any  Restricted  Company  Subsidiary  incurred at any time within 315
days of, and for the  purpose of  financing  all or any part of the cost of, the
construction, expansion, installation, acquisition or improvement by the Company
or any  Restricted  Company  Subsidiary  of any new  Telecommunications  Assets;
PROVIDED that the proceeds of such  Indebtedness  are expended for such purposes
within such 315-day period; and PROVIDED further that the Net Cash Proceeds from
the issuance of such  Indebtedness does not exceed, as at the date of incurrence
thereof,  100%  of the  lesser  of  the  cost  or  Fair  Market  Value  of  such
Telecommunications  Assets;  PROVIDED  further  that, to the extent an Incumbent
Agreement  is  characterized  as a  Capitalized  Lease  Obligation,  it shall be
considered Telecommunications Indebtedness.

              "UNRESTRICTED COMPANY SUBSIDIARY" means:

(a)           any  Subsidiary  of the Company that at the time of  determination
              shall be an Unrestricted  Company Subsidiary (as designated by the
              Board of Directors as provided below); and

(b)           any Subsidiary of an Unrestricted Company Subsidiary.

                            The Board of Directors may designate any  Subsidiary
              of the  Company  (including  any newly  acquired  or newly  formed
              Subsidiary  of  the  Company)  to  be  an   Unrestricted   Company
              Subsidiary  so long  as (i)  neither  the  Company  nor any  other
              Subsidiary of the Company is directly or indirectly liable for any
              Indebtedness of such  Subsidiary,  (ii) no default with respect to
              any  Indebtedness  of such  Subsidiary  would permit (upon notice,
              lapse of time or otherwise)  any holder of any other  Indebtedness
              of the Company or any Restricted  Company  Subsidiary to declare a
              default on such other Indebtedness or cause the payment thereof to
              be accelerated or payable prior to its Stated Maturity,  (iii) any
              Investment in such Subsidiary made as a result of designating such
              Subsidiary an Unrestricted Company Subsidiary will not violate the
              provisions  of Section  1012,  (iv)  neither  the  Company nor any
              Restricted   Company   Subsidiary   has  a  contract,   agreement,
              arrangement,  understanding  or  obligation  of any kind,  whether
              written or oral, with such Subsidiary  other than those that might
              be obtained at the time from persons who are not Affiliates of the
              Company,  and (v) neither the Company nor any other  Subsidiary of
              the Company has any  obligation  (1) to subscribe  for  additional
              shares  of  Capital  Stock  or  other  equity   interest  in  such
              Subsidiary,  or (2) to  maintain  or  preserve  such  Subsidiary's
              financial condition or to cause such Subsidiary to achieve certain
              levels of operating results.  Any such designation by the Board of
              Directors  shall be  evidenced  to the  Trustee  by filing a Board
              Resolution with the Trustee giving effect to such designation. The
              Board  of  Directors  may  designate  any   Unrestricted   Company
              Subsidiary  as a Restricted  Company  Subsidiary  if,  immediately
              after giving effect to such designation, there would be no Default
              or Event of Default  under this  Indenture  and the Company  could
              incur $1.00 of additional  Allowable Company  Indebtedness  (other
              than Permitted Indebtedness).

SECTION 104.  AMENDMENT TO SECTION 103.  Section 103 of the  Indenture is hereby
amended by deleting  the existing  Section 103 in its entirety and  replacing it
with the following:


Section 103.  FORM OF DOCUMENTS DELIVERED TO TRUSTEE.
              ---------------------------------------

              In any case where several matters are required to be certified by,
or covered by an opinion of, any specified  Person, it is not necessary that all
such  matters  be  certified  by, or covered by the  opinion  of,  only one such
Person,  or that they be so certified or covered by only one  document,  but one
such Person may certify or give an opinion  with respect to some matters and one
or more other such Persons as to other matters,  and any such Person may certify
or give an opinion as to such matters in one or several documents.

              Any  certificate  or opinion of an officer of the  Company  may be
based, insofar as it relates to legal matters, upon a certificate or opinion of,
or representations by, counsel, unless such officer knows, or in the exercise of
reasonable care should know, that the certificate or opinion or  representations
with respect to the matters upon which his  certificate  or opinion is based are
erroneous.  Any such certificate or Opinion of Counsel may be based,  insofar as
it  relates  to  factual   matters,   upon  a  certificate  or  opinion  of,  or
representations  by, an officer or officers of the Company,  unless such counsel
knows,  or in the exercise of reasonable  care should know, that the certificate
or opinion or representations with respect to such matters are erroneous.

              Any  certificate  or  opinion  of an  officer of the Parent may be
based, insofar as it relates to legal matters, upon a certificate or opinion of,
or representations by, counsel, unless such officer knows, or in the exercise of
reasonable care should know, that the certificate or opinion or  representations
with respect to the matters upon which his  certificate  or opinion is based are
erroneous.  Any such certificate or Opinion of Counsel may be based,  insofar as
it  relates  to  factual   matters,   upon  a  certificate  or  opinion  of,  or
representations  by, an officer or officers of the Parent,  unless such  counsel
knows,  or in the exercise of reasonable  care should know, that the certificate
or opinion or representations with respect to such matters are erroneous.

              Where any Person is required to make,  give or execute two or more
applications,  requests, consents,  certificates,  statements, opinions or other
instruments  under this Indenture,  they may, but need not, be consolidated  and
form one instrument.



                           AMENDMENTS TO "NOTE FORMS"

SECTION 105.  AMENDMENT TO SECTION 202.  Section 202 of the  Indenture is hereby
amended by deleting  the existing  Section 202 in its entirety and  replacing it
with the following:

         Section 202.  FORM OF FACE OF NOTE.
                       --------------------


                                                   PATHNET, INC.


                          12 1/4% Senior Note due 2008




                             [CUSIP]_______________
                             [ISIN]_________________

No._____________                                                 $________

   Pathnet,  Inc., a Delaware  corporation  (herein called the "Company",  which
term  includes  any  successor  Person  under the  Indenture,  as amended by the
Supplemental  Indenture,  each  hereinafter  referred  to), for value  received,
hereby promises to pay to _____________ or registered assigns, the principal sum
of  ________________  Dollars on April 15, 2008,  at the office or agency of the
Company and the Parent (as defined below) referred to below, and to pay interest
thereon  on  October  15,  1998 and  semi-annually  thereafter,  on April 15 and
October 15 in each year,  from April 8, 1998,  or from the most recent  Interest
Payment Date to which  interest has been paid or duly  provided for, at the rate
of 12 1/4% per annum,  until the principal  hereof is paid or duly provided for,
and (to the extent lawful) to pay on demand interest on any overdue  interest at
the rate borne by the Notes from the date on which such overdue interest becomes
payable to the date payment of such interest has been made or duly provided for.
The  interest so  payable,  and  punctually  paid or duly  provided  for, on any
Interest  Payment  Date,  as  provided in such  Indenture,  shall be paid to the
Person in whose name this Note (or one or more Predecessor  Notes) is registered
at the close of  business of the Regular  Record Date for such  interest,  which
shall be the April 1 or October 1 (whether or not a Business  Day),  as the case
may be, next  preceding  such Interest  Payment Date.  This Note has been issued
with original issue discount for U.S. federal income tax purposes.

   This Note is unconditionally guaranteed by Pathnet Telecommunications, Inc.,
a  Delaware  corporation  (herein  called  the  "Parent")  as set  forth  in the
Guarantee endorsed hereon.

   The following  information  is supplied for purposes of Section 1273 and 1275
of the Internal Revenue Code.

                 Issue Date:                                      April 8, 1998
                 Issue Price:                                     $988.29
                 Original issue discount under Section 1273 of
                 the Internal Revenue Code (for each $1,000
                 principal amount):                               $11.71
                 Yield Maturity                                   12.46%


                  Any such interest not so punctually  paid or duly provided for
shall  forthwith  cease to be payable to the Holder on such Regular Record Date,
and  such  defaulted  interest,  and (to the  extent  lawful)  interest  on such
defaulted  interest at the rate borne by the Notes, may be paid to the Person in
whose name this Note (or one or more  Predecessor  Notes) is  registered  at the
close of  business on a Special  Record  Date for the payment of such  Defaulted
Interest to be fixed by the Trustee, notice whereof shall be given to Holders of
Notes not less than 10 days prior to such Special Record Date, or may be paid at
any time in any other lawful manner not  inconsistent  with the  requirements of
any securities  exchange on which the Notes may be listed,  and upon such notice
as may be  required  by  such  exchange,  all as  more  fully  provided  in said
Indenture. Payment of the principal of (and premium, if any, on) and interest on
this Note will be made to the Depositary or its nominee,  as the case may be, as
the registered  owner thereof,  in such coin or currency of the United States of
America  as at the time of payment  is legal  tender  for  payment of public and
private  debts;  PROVIDED,  HOWEVER,  the payment of interest may be made at the
option of the Company or the Parent,  as the case may be (i) by its check mailed
to the address of the Person  entitled  thereto as such address  shall appear on
the Note Register or (ii) by wire transfer to an account maintained by the payee
located in the United States.

   The Holder of this Note is entitled to the benefits of the Notes Registration
Rights  Agreements,  dated as of April 8, 1998 (the  "Notes  Registration  Right
Agreement"), between the Company and the Initial Purchasers named therein.

   Reference is hereby made to the further  provisions of this Note set forth on
the reverse  hereof,  which further  provisions  shall for all purposes have the
same effect as if set forth at this place.

   Unless the certificate of authentication hereon has been duly executed by the
Trustee referred to on the reverse hereof by manual  signature,  this Note shall
not  be  entitled  to  any  benefit  under  the  Indenture,  as  amended  by the
Supplemental  Indenture,  or the  Guarantee  or be valid or  obligatory  for any
purpose.

   IN WITNESS  WHEREOF,  the  Company  has  caused  this  instrument  to be duly
executed.



   Dated:                                PATHNET, INC.



                                         By_____________________________________



                  Attest:



                  ---------------------
________________Authorized Signature





SECTION  106.______AMENDMENT  TO SECTION  203.  Section 203 of the  Indenture is
hereby  amended  by  deleting  the  existing  Section  203 in its  entirety  and
replacing it with the following:

         Section 203. FORM OF REVERSE NOTE.
                      --------------------

              This Note is one of a duly  authorized  issue of securities of the
Company  designated  as its 12 1/4%  Senior  Notes due 2008  (herein  called the
"Notes"),  limited (except as otherwise provided in the Indenture, as amended by
the Supplemental Indenture) in aggregate principal amount to $350,000,000, which
may be issued under an  indenture  dated as of April 8, 1998 between the Company
and The Bank of New York, as trustee,  as amended by the Supplemental  Indenture
dated as of March 30, 2000  between  the  Company,  Pathnet  Telecommunications,
Inc.,  and The Bank of New  York,  as  trustee.  References  in this Note to the
Indenture  shall be deemed to be  references  to the Indenture as amended by the
Supplemental  Indenture.  The Bank of New York,  as trustee is herein called the
"Trustee",  which term  includes  any  successor  trustee  under the  Indenture.
Reference  is  hereby  made to the  Indenture  and all  indentures  supplemental
thereto for a statement of the respective rights, limitations of rights, duties,
obligations and immunities  thereunder of the Company,  the Parent,  the Trustee
and the Holders of the Notes, and of the terms upon which the Notes are, and are
to be, authenticated and delivered.

              The Notes are subject to redemption upon not less than 30 nor more
than 60 days notice,  at any time after April 15, 2003 as a whole or in part, at
the election of the Company,  at a Redemption Price (expressed as percentages of
the  principal  amount) set forth below if redeemed  during the 12-month  period
beginning April 15, of the years  indicated  (subject to the right of Holders of
record on the  relevant  Regular  Record  Dates to  receive  interest  due on an
interest payment date):

                                   YEAR                     REDEMPTION PRICE
                                   ----                     ----------------
                      2003                                      106.125%
                      2004                                      104.083%
                      2005                                      102.042%
                      2006 and thereafter                       100.00%


              together in the case of any such redemption with accrued interest,
if any, to the Redemption Date, all as provided in the Indenture.

   Notwithstanding the foregoing, at any time on or prior to April 15, 2001, the
Company may redeem within 60 days of one or more Public  Equity  Offerings up to
35% of the aggregate principal amount of the Notes issued on the Issue Date at a
redemption price equal to 112.25% of the principal amount thereof,  plus accrued
and unpaid  interest and  Liquidated  Damages,  if any thereon to the Redemption
Date (subject to the right of Holders of record on the relevant  Regular  Record
Date to receive  interest  due on an  Interest  Payment  Date) with the Net Cash
Proceeds of one or more Public Equity  Offerings;  PROVIDED that at least 65% of
the principal amount of the Notes issued on the Issue Date remain Outstanding.

   If less than all the Notes are to be  redeemed,  the Trustee  will select the
particular  Notes to be redeemed  not more than 60 days prior to the  redemption
date by such method as the Trustee deems fair and appropriate;  PROVIDED that no
such partial  redemption will reduce the principal amount of a Note not redeemed
to less than $1,000.  Notice of redemption will be mailed,  first-class  postage
prepaid,  at least 30 but not more than 60 days  before the  redemption  date to
each holder of Notes to be redeemed at its registered  address. On and after the
date of  redemption,  interest  will cease to accrue on Notes  portions  thereof
called for redemption and accepted for payment.

   Upon the  occurrence  of a Change  of  Control,  the  Holder of this Note may
require the Company,  subject to certain limitations provided in Section 1010 of
the  Indenture  and otherwise in this  Indenture,  to repurchase  this Note at a
purchase  price  in cash in an  amount  equal  to 101% of the  principal  amount
thereof,  plus  accrued  and  unpaid  interest  thereon to the Change of Control
Purchase Date (as defined in Section 1010 of the Indenture).

   In the case of any redemption of Notes,  interest  installments  whose Stated
Maturity is on or prior to the Redemption Date will be payable to the Holders of
record of such Notes, or one or more Predecessor Notes, at the close of business
on the relevant  Record Date referred to on the face hereof.  Notes (or portions
thereof) for whose  redemption and payment  provision is made in accordance with
the Indenture shall cease to bear interest from and after the Redemption Date.

   In the event of redemption of this Note in part only, a new Note or Notes for
the  unredeemed  portion hereof shall be issued in the name of the Holder hereof
upon the cancellation hereof.

   If an Event of Default  shall occur and be  continuing,  the principal of all
the Notes may be  declared  due and  payable  in the  manner and with the effect
provided in the Indenture.

   The  Indenture  contains  provisions  for  defeasance  at any time of (a) the
entire  indebtedness  of the  Company on this Note and (b)  certain  restrictive
covenants and the related  Defaults and Events of Defaults,  upon  compliance by
the Company with certain conditions set forth therein, which provisions apply to
this Notice.

   The  Indenture  permits,  with certain  exceptions as therein  provided,  the
amendment  thereof and the  modifications  of the rights and  obligations of the
Company,  the Parent and the rights of the Holders  under the  Indenture  at any
time by the  Company  and the  Trustee  with the  consent  of the  Holders  of a
majority in aggregate principal amount of the Notes at the time Outstanding. The
Indenture  also  contains   provisions   permitting  the  Holders  of  specified
percentages in aggregate  principal amount of the Notes at the time Outstanding,
on behalf of the Holders of all Notes,  to waive  compliance  by the Company and
the Parent with certain  provisions  of the  Indenture and certain past defaults
under the Indenture and their consequences.  Any such consent or waiver by or on
behalf of the  Holder of this Note shall be  conclusive  and  binding  upon such
Holder and upon all future  Holders of this Note and of any Note issued upon the
registration  of transfer hereof or in exchange hereof or in lieu hereof whether
or not notation of such consent or waiver is made upon this Note.

   No reference herein to the Indenture and no provisions of this Note or of the
Indenture shall alter or impair the obligation of the Company, which is absolute
and unconditional,  to pay the principal of (and premium and Liquidated Damages,
if any) and interest on this Note at the times, place, and rate, and in the coin
or currency, herein prescribed.

   As provided in the Indenture and subject to certain  limitations  therein set
forth,  the transfer of this Note is  registerable  on the Note  Register of the
Company,  upon surrender of this Note for registration of transfer at the office
or agency of the Company and the Parent  maintained for such purpose in The City
of New York,  duly  endorsed  by, or  accompanied  by a  written  instrument  of
transfer in form satisfactory to the Company,  the Parent and the Note Registrar
duly executed by, the Holder hereof or his attorney duly  authorized in writing,
and thereupon one or more new Notes,  of  authorized  denominations  and for the
same aggregate principal amount, will be issued to the designated transferee and
transferees.

   The  Notes  are  issuable  only  in  registered   form  without   coupons  in
denominations of $1,000 and any integral  multiple  thereof.  As provided in the
Indenture and subject to certain  limitations  therein set forth,  the Notes are
exchangeable  for  alike  aggregate  principal  amount  of Notes of a  different
authorized denomination, as requested by the Holder surrendering the same.

   No service charge shall be made for any  registration of transfer or exchange
of Notes,  but the Company may require  payment of a sum sufficient to cover any
tax or other governmental charge payable in connection therewith.

   Prior  to the  time of due  presentment  of this  Note  for  registration  of
transfer,  the Company,  the Trustee and any agent of the Company or the Trustee
may treat the Person in whose name this Note is  registered  as the owner hereof
for all purposes,  whether or not this Note be overdue, and neither the Company,
the Trustee nor any agent shall be affected by notice to the contrary.

   THIS NOTE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF
THE STATE OF NEW YORK,  WITHOUT GIVING EFFECT TO THE CONFLICTS OF LAW PRINCIPLES
THEREOF.



   All terms used in this Note which are defined in the Indenture shall have the
meanings assigned to them in the Indenture.

SECTION 107.______ADDITION OF SECTION 203A. The following Section 203A is hereby
added to the Indenture:

         SECTION 203A.  GUARANTEE OF NOTE.  Each of the Notes shall have the
                        ------------------
following Guarantee endorsed upon it:

         1._______GUARANTEE OF PAYMENT AND PERFORMANCE OF OBLIGATIONS.

(a)      For value received,  Pathnet  Telecommunications,  Inc. (the "Parent")
                            unconditionally  guarantees  to  the  holder  of any
                            Outstanding  Note or Notes (a "Holder") the full and
                            punctual  payment and performance of the Obligations
                            (as defined in subsection (b) below). This Guarantee
                            is  an  absolute,   unconditional   and   continuing
                            guarantee  of the  full  and  punctual  payment  and
                            performance   by  the   Company   of   each  of  the
                            Obligations,  and not of collectability only, and is
                            no way  conditioned  upon any  requirement  that any
                            Holder first attempt to seek payment or  performance
                            from the Company or any other guarantor or surety or
                            resort to any  security or other means of  obtaining
                            payment of all or any of the Obligations or upon any
                            other  contingency.  Upon any default by the Company
                            in the full and punctual  payment or  performance of
                            any of the  Obligations,  if  such  default  remains
                            uncured after the giving of any required  notice and
                            after any applicable period of cure, the liabilities
                            and obligations of the Parent hereunder shall at the
                            option of any  Holder  become  forthwith  effective,
                            matured,  due and payable  without further demand or
                            notice of any nature,  all such  demands and notices
                            being expressly waived by the Parent.

(b)      As  used  herein,  the   term  "Obligations"  means   all  obligations,
                            covenants, liabilities,  undertakings and agreements
                            of  any  kind  of the  Company  to all or any of the
                            Holders contained in the Indenture,  to be performed
                            after the date hereof, howsoever,  incurred, arising
                            or evidenced, whether now or hereafter existing, due
                            or to become due or of payment  or  performance  and
                            including,   without  limitation:   (i)  the  prompt
                            payment in full, in United States currency, when due
                            (whether at stated  maturity,  by  acceleration,  by
                            mandatory or optional  prepayment  or  otherwise) of
                            the   principal   of  and   interest  on  the  Notes
                            (including  interest on any overdue principal,  and,
                            to the extent  permitted by  applicable  law, on any
                            overdue interest) and all other amounts from time to
                            time owing by the Company  under the  Indenture  and
                            under  the  Notes  (including  costs,  expenses  and
                            taxes);   and  (ii)  the  prompt   performance   and
                            observance   by  the   Company  of  all   covenants,
                            agreements   and   conditions  on  its  part  to  be
                            performed and observed under the Indenture,  in each
                            case strictly in  accordance  with the terms thereof
                            (such  payments and other  obligations  being herein
                            collectively referred to as the "Obligations").

2.       GUARANTEE CONTINUING AND LIABILITY UNAFFECTED.

(a)                        Subject  to  Section  2  (c),  this  is a  continuing
                           guarantee  and  shall  be  binding  upon  the  Parent
                           regardless  of how  long  before  or  after  the date
                           hereof any part of the Obligations was or is incurred
                           by the  Company.  Subject  to  Section  2  (c),  this
                           Guarantee  may  be  enforced  by  any  or  all of the
                           Holders  from  time to time and as often as  occasion
                           for such enforcement may arise.

(b)      If after  receipt  of any  payment  from the  Parent  made  hereunder
                            the  Holders,  or  any of  them,  are  compelled  to
                            surrender or  voluntarily  surrender such payment or
                            proceeds  to any  person  because  such  payment  or
                            application  of  proceeds  is  or  may  be  avoided,
                            invalidated,   recaptured,   or  set   aside   as  a
                            preference,  fraudulent  conveyance,   impermissible
                            setoff or for any other reason,  whether or not such
                            surrender is the result of (i) any judgment,  decree
                            or order of any court or administrative  body having
                            jurisdiction   over   the   Holders,   or  (ii)  any
                            settlement or compromise by the Holders of any claim
                            as  to  any  of  the   foregoing   with  any  person
                            (including  the Company),  then the  Obligations  or
                            part  thereof   affected  shall  be  reinstated  and
                            continue and this Guarantee  shall be reinstated and
                            continue  in full  force as to such  Obligations  or
                            part  thereof as if such payment or proceeds had not
                            been  received.  The provisions of this Section 2(b)
                            shall survive the  termination of this Guarantee and
                            any  satisfaction  and  discharge  of the Company by
                            virtue of any payment, court order or any federal or
                            state law.

(c)                        The Parent shall be  subrogated  to all rights of the
                           Holders in respect of any amounts  paid by the Parent
                           pursuant  to  the   provisions  of  this   Guarantee;
                           provided,  however,  that Parent shall be entitled to
                           enforce, or to receive any payments arising out of or
                           based upon, such right of subrogation with respect to
                           any Obligation  only after the payment of all amounts
                           owed by the  Company to the Holders  with  respect to
                           all of the Obligations have been paid in full.

(d)                        This Guarantee  shall  terminate and be of no further
                           force and effect as to any Note upon full  payment of
                           the  Redemption  Price  with  respect  to such  Note,
                           PROVIDED, however, that this Guarantee shall continue
                           to be effective or shall be  reinstated,  as the case
                           may be,  if at any  time  the  Company  must  restore
                           payment  of any sums  paid  under  such Note or under
                           this Guarantee for any reason whatsoever.

         3. UNCONDITIONAL  NATURE OF PARENT'S  OBLIGATIONS AND LIABILITIES.  The
         obligations and  liabilities of the Parent  hereunder shall be absolute
         and  unconditional,  and  shall  not be  subject  to any  counterclaim,
         set-off,  deduction or defense based upon any claim the Parent may have
         against the Company or any other person or entity. Such obligations and
         liabilities  shall  remain in full  force and effect for the period set
         forth in Section 2 above without regard to any event,  circumstance  or
         condition  (whether or not the Parent  shall have  knowledge  or notice
         thereof) which but for the provisions of this Section might  constitute
         a legal or  equitable  defense or discharge of a guarantor or surety or
         which might in any way limit recourse against the Parent, including:

                  (a)      any  amendment or  modification  or supplement to the
                           terms of the Indenture,  this Guarantee or any of the
                           Notes, including the renewal or extension of the time
                           for  payment of the Notes or the  granting of time in
                           respect of the payment thereof;

                  (b)      any  waiver,  consent,  extension,  granting of time,
                           forbearance,  indulgence  or other action or inaction
                           under or in respect of the Indenture or the Notes, or
                           any exercise or non-exercise of any right,  remedy or
                           power in respect thereof;

                  (c)      the  invalidity or  unenforceability,  in whole or in
                           part of the  Indenture  or this  Guarantee  resulting
                           from the  Company's or the Parent's lack of authority
                           to enter  into the  Indenture  and/or to incur any or
                           all of the Obligations,  by any person acting for the
                           Company  or  the  Parent  without  or  in  excess  of
                           authority;

                  (d)      any actual,  purported or attempted sale,  assignment
                           or other  transfer by any or all of the Holders or by
                           the  Company  or the Parent of the  Indenture  or the
                           Notes  or  of  any  of  their  rights,  interests  or
                           obligations thereunder;

                  (e)      the   addition   of  any  party  as  a guarantor  or
                           surety  of  all  or  any  part  of  the  Obligations
                           or any limitation of the liability of any additional
                           guarantor  or  surety  of  all or  any  part  of the
                           Obligations under any other agreement;

                  (f)      any merger or  consolidation of the Company or of the
                           Parent  into or with any other  entity,  or any sale,
                           lease, transfer or other disposition of any or all of
                           any  Company's  or the  Parent's  assets or any sale,
                           transfer  or other  disposition  of any or all of the
                           economic  interests  in the  Company or the Parent to
                           any other person or entity;

                  (g)      the recovery of any judgment against the Company or
                           any action to enforce the same; or

                  (h)      any change in the financial  condition of the Company
                           or the  Company's  entry into an  assignment  for the
                           benefit of  creditors,  an  arrangement  or any other
                           agreement or procedure for the  restructuring  of its
                           liabilities, or the Company's insolvency, bankruptcy,
                           reorganization,   dissolution,   liquidation  or  any
                           similar  action by or occurrence  with respect to the
                           Company.

         4.       PARENT'S WAIVER.  The Parent unconditionally waives, to the
                  ---------------
fullest extent permitted by law:

(a)     notice of any of the matters referred to in Section 3 hereof;

(b)     diligence,  presentment,  demand of payment  and filing of claims with a
        court in the event of bankruptcy or insolvency of the Company;

(c)     any right to the enforcement, assertion or exercise by any or all of the
        Holders of any of their  rights,  powers or remedies  under,  against or
        with respect to the Company (i) any other  guarantor or surety,  or (ii)
        any security for all or any part of the Obligations;

(d)     any  requirement  that the  Parent be joined as a party in any action or
        proceeding  against the Company to enforce any of the  provisions of the
        Indenture;

(e)     acceptance of this Guarantee by any Holder;

and covenants  that this  Guarantee  will not be  discharged  except by complete
performance of the obligations contained in this Guarantee.

         5.       REPRESENTATIONS AND WARRANTIES.  The Parent represents and
                  ------------------------------
warrants that:

(a)                        the  Parent  is  a  corporation  duly  organized  and
                           validly  existing in good standing  under the laws of
                           the  State  of  Delaware  and  has  the  full  power,
                           authority  and legal  right to enter into and perform
                           its obligations under this Guarantee;

(b)                        this Guarantee has been duly authorized, executed and
                           delivered  by the Parent and  constitutes  the legal,
                           valid  and   binding   obligation   of  the   Parent,
                           enforceable against the Parent in accordance with its
                           terms,   except   for  the   effect  of   bankruptcy,
                           insolvency, reorganization,  moratorium, receivership
                           or  similar  laws   affecting  the   enforcement   of
                           creditors' rights generally;

(c)                        the execution, delivery and performance by the Parent
                           of this  Guarantee do not and will not contravene any
                           applicable law, rule,  regulation,  judgment or order
                           and do not and will not contravene the provisions of,
                           constitute a breach of or default under, or result in
                           the  creation  of  any  security  interest,  lien  or
                           encumbrance  on  any of the  property  of the  Parent
                           pursuant to, the Parent's  articles of  incorporation
                           or by-laws  or any  indenture,  mortgage,  license or
                           other contract,  agreement or instrument to which the
                           Parent is a party or by which it is bound.

         6.       ATTORNEY'S  COSTS.  The Parent agrees to pay all  reasonable
                  -----------------
attorney's fees and  disbursements and all other reasonable and actual costs and
expenses  which  may be  incurred  by the  Holders  in the  enforcement  of this
Guarantee.

         7.       SUCCESSORS  AND  ASSIGNS.  This  Guarantee  shall be binding
                  ------------------------
upon the Parent and its respective  successors  and assigns,  and shall inure to
the benefit of and be enforceable by the Holders and their respective successors
and assigns.

         8.       GOVERNING  LAW. This  Guarantee  shall be governed by and
                  --------------
construed in accordance  with the laws of the State of New York.

         9. SEVERABILITY.  Wherever  possible,  each provision of this Guarantee
shall be  construed  in such manner as to be valid and  enforceable  against the
Parent under applicable law, but if any provision hereof shall be deemed invalid
or  unenforceable  to any extent  against the Parent in any  jurisdiction,  such
provision  shall  be  ineffective  only  to the  extent  of such  invalidity  or
unenforceability  without invalidating or rendering  unenforceable the remainder
of such provision or any of the other provisions hereof, and any such invalidity
or unenforceability against the Parent in one jurisdiction shall not render such
provision ineffective in any other jurisdiction.

         10.      NOTICES.
                  -------

                  Any  notice,   request  or  other  communication  required  or
permitted to be given  hereunder to the Holders  shall be given by the Parent in
the same manner as set forth in Section 106 of the Indenture.

         11.      TRANSFERABILITY.  This  Guarantee is solely for the benefit of
                  ---------------
 the Holders and is not separately transferable from the Notes.

         12.      HEADINGS.  Section  headings  appearing in this  Guarantee are
                  --------
for  convenience  of  reference  only and shall not  define,  limit,  amplify or
otherwise modify any provision  hereof.  Capitalized  terms used herein have the
meanings given to them in the Indenture.

                  This Guarantee shall not be valid or obligatory to any purpose
until the certificate of  authentication on the Note on which this Guarantee has
been endorsed shall have been executed by the Trustee under the Indenture by the
signature of one of its authorized officers.

IN WITNESS  WHEREOF,  the Parent has caused this Guarantee to be executed on its
behalf by an officer or other person  thereunto  duly  authorized as of the date
first above written.

                                            PATHNET TELECOMMUNICATIONS, INC.


                                            By:
                                            Name:
                                            Title:



                             AMENDMENT TO "REMEDIES"

SECTION 108.  AMENDMENT TO SECTION 501.  Section 501 of the  Indenture is hereby
amended by deleting  the existing  Section 501 in its entirety and  replacing it
(i) with the  definition  of "Event of Default" set forth in Section 103 for the
purposes of  interpretation  of Section  1017(a) and (ii) with the definition of
"Event of Default" set forth in Section 102 for all other purposes.


        AMENDMENTS TO "CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE"

SECTION 109.      AMENDMENT TO ARTICLE EIGHT. Article Eight of the Indenture is
                  --------------------------
hereby  amended by deleting  the  existing  Article  Eight in its  entirety  and
replacing it with the following:

SECTION 801.   COMPANY AND PARENT MAY CONSOLIDATE, ETC., ONLY ON CERTAIN TERMS.
               ---------------------------------------------------------------

                  Neither  the  Company  nor  the  Parent  will,   in  a  single
transaction or a series of transactions,  consolidate with or merge with or into
any other Person or sell, assign, convey,  transfer,  lease or otherwise dispose
of all or substantially  all of its properties and assets to any other Person or
Persons,  and  neither  will the  Company  or the Parent  permit any  Restricted
Subsidiary to enter into any such transaction or series of transactions, if such
transaction or series of  transactions,  in the  aggregate,  would result in the
sale,  assignment,  conveyance,  transfer,  lease or other disposition of all or
substantially  all of the properties and assets of the Restricted  Entities on a
consolidated  basis to any  other  Person  or  Persons,  unless  at the time and
immediately  after giving effect thereto and subject always to the provisions of
Section 1010 and Section 1017:

(1)      either (A) the  Company or the Parent (as the case may be) shall be the
         continuing  corporation or (B) the Person (if other than the Company or
         the Parent) formed by such consolidation or into which the Company, the
         Parent or such  Restricted  Subsidiary  is merged  or the  Person  that
         acquires  by  sale,   assignment,   conveyance,   transfer,   lease  or
         disposition all or  substantially  all the properties and assets of the
         Restricted  Entities on a consolidated  basis,  as the case may be (the
         "Surviving Entity"),  (i) shall be a corporation  organized and validly
         existing  under the laws of the  United  States of  America,  any state
         thereof or the District of Columbia and (ii) shall expressly assume, by
         a supplemental  indenture to this Indenture in form satisfactory to the
         Trustee,  the  obligations of the Company or the Parent pursuant to the
         Notes or the  Guarantee,  as the case may be, for the due and  punctual
         payment of the principal of,  premium,  if any, and interest on all the
         Notes and the  performance  and observance of every covenant  herein on
         the part of the Company or the Parent to be performed or observed;

(2)      immediately   before  and  immediately  after  giving  effect  to  such
         transaction  or  series  of  transactions  on a pro  forma  basis  (and
         treating any obligation of any Restricted Entity incurred in connection
         with or as a result of such  transaction or series of  transactions  as
         having been  incurred at the time of such  transaction),  no Default or
         Event of Default shall have occurred and be continuing;

(3)      immediately  after  giving  effect  to such  transaction  or  series of
         transactions  on  a  pro  forma  basis  (on  the  assumption  that  the
         transaction or series of transactions  occurred on the first day of the
         two fiscal quarter period ending  immediately prior to the consummation
         of such  transaction or series of  transactions,  with the  appropriate
         adjustments  with respect to the  transaction or series of transactions
         being  included  in such pro forma  calculation),  the  Company  or the
         Parent (as the case may be) (or the Surviving  Entity if the Company or
         the Parent is not the  continuing  obligor  hereunder)  could  incur at
         least  $1.00  of   additional   Indebtedness   (other  than   Permitted
         Indebtedness) under Section 1011; and

(4)      the  Company,  the Parent or such Person  shall have  delivered  to the
         Trustee, in form and substance reasonably  satisfactory to the Trustee,
         an Officers'  Certificate  (attaching the  computations  to demonstrate
         compliance  with  clause (3) above)  and an  Opinion of  Counsel,  each
         stating that such consolidation,  merger, sale, assignment, conveyance,
         transfer or lease or other disposition and, if a supplemental indenture
         is required in  connection  with such  transaction,  such  supplemental
         indenture,  comply with this Article and that all conditions  precedent
         herein  provided for relating to such  transaction  have been  complied
         with.

                  Any merger or consolidation  of a Restricted  Subsidiary or of
the  Company  with and into the  Company or the Parent  (with the Company or the
Parent (as the case may be) being the  surviving  entity) or another  Restricted
Subsidiary  need only  comply  with  clauses  (3) and (4) above.  Further,  this
section shall not apply to any  reincorporation  of any Restricted  Entity under
the laws of the United  States of America,  any state thereof or the District of
Columbia.

                  SECTION 802.  SUCCESSOR SUBSTITUTED.
                                ---------------------

                  Upon any  consolidation  of the  Company or the Parent with or
merger of the  Company or the Parent with or into any other  corporation  or any
sale, assignment,  conveyance,  transfer, lease or disposition of the properties
and assets of the  Company or the Parent  substantially  as an  entirety  to any
Person in accordance  with Section 801 in which the Company or the Parent is not
the continuing obligor hereunder,  the Surviving Entity shall succeed to, and be
substituted  for, and may exercise  every right and power of, the Company or the
Parent (as the case may be) hereunder  with the same effect as if such successor
Person had been named as the  Company or the Parent (as the case may be) herein.
When a successor  assumes all of the  obligations of its  predecessor  under the
Indenture,  the predecessor  shall be released from such  obligations;  PROVIDED
that, in the case of a transfer by lease, the predecessor  shall not be released
from the payment of principal of, premium, if any, and interest on the Notes or,
in the case where the predecessor is the Parent,  from the obligations under the
Guarantees  in respect of the payment of  principal  of,  premium,  if any,  and
interest on the Notes.

                  SECTION 803.  NOTES TO BE SECURED IN CERTAIN EVENTS.
                                -------------------------------------

                  If, upon any such  consolidation  of the Company or the Parent
with or merger of the Company or the Parent into any other corporation,  or upon
any sale,  assignment,  conveyance,  lease or  transfer  of the  property of the
Company or the Parent  substantially  as an  entirety to any other  Person,  any
property  or  assets of the  Company  or the  Parent  (as the case may be) would
thereupon  become  subject to any Lien,  then  unless such Lien could be created
pursuant to Section 1015  without  equally and ratably  securing the Notes,  the
Company or the Parent (as the case may be), prior to or simultaneously with such
consolidation, merger, sale, assignment, conveyance, lease or transfer, shall as
to such property or assets,  secure the Notes  Outstanding or the Guarantees (as
the case may be)  (together  with, if the Company or the Parent (as the case may
be) shall so determine,  any other Indebtedness of the Company or the Parent (as
the case may be) now existing or hereinafter created which is not subordinate in
right of payment to the Notes or the  Guarantees,  as the case may be))  equally
and ratably with (or prior to) the Indebtedness  which upon such  consolidation,
merger,  conveyance,  lease or transfer is to become secured as to such property
or assets  by such  Lien,  or shall  cause  such  Notes or  Guarantees  to be so
secured.

                     AMENDMENTS TO "SUPPLEMENTAL INDENTURES"

SECTION 110.  AMENDMENT TO SECTION 901.  Section 901 of the  Indenture is hereby
amended by deleting  the existing  Section 901 in its entirety and  replacing it
with the following:

   SECTION 901.  SUPPLEMENTAL INDENTURES WITHOUT CONSENT OF HOLDERS.
                 --------------------------------------------------

                  Without  the  consent  of any  Holders,  the  Company  and the
Parent, when authorized by a Board Resolution,  and the Trustee, at any time and
from time to time, may enter into one or more indentures supplemental hereto, in
form satisfactory to the Trustee, for any of the following purposes:

(1)      to evidence the succession of another Person to the Company, the Parent
         or any other  obligor  on the  Notes,  and the  assumption  by any such
         successor of the covenants of the Company or the Parent or such obligor
         contained  herein and in the Notes in accordance  with Article Eight of
         this Indenture;

(2)      to add to the covenants of the Company, the Parent or any other obligor
         upon the Notes or the  Guarantees  for the benefit of the Holders or to
         surrender  any right or power herein  conferred  upon the Company,  the
         Parent  or any  other  obligor  upon the  Notes or the  Guarantees,  as
         applicable, in this Indenture or the Notes;

(3)      to cure any ambiguity, to correct or supplement any provision herein or
         in the Notes or the  Guarantees  that may be defective or  inconsistent
         with any other provision  herein or in the Notes or the Guarantees,  or
         to make any other  provisions  with  respect to  matters  or  questions
         arising under this Indenture or the Notes or the  Guarantees;  PROVIDED
         that, in each case, such action shall not adversely affect the interest
         of the Holders;

(4)      to comply with the requirements of the Commission in order to effect or
         maintain the  qualification,  if any, of the Indenture  under the Trust
         Indenture Act;

(5)      to  evidence  and  provide  the  acceptance  of  the  appointment  of a
         successor Trustee under this Indenture;

(6)      to mortgage,  pledge, hypothecate or grant a security interest in favor
         of the Trustee for the  benefit of the Holders as  additional  security
         for the  payment  and  performance  of the  Company's  or the  Parent's
         obligations  hereunder,  in any  property or assets,  including  any of
         which are  required to be  mortgaged,  pledged or  hypothecated,  or in
         which a security  interest  is  required  to be granted to the  Trustee
         pursuant to this Indenture or otherwise;

(7)      to add a further guarantor of the Notes under the Indenture;

(8)      to secure the Notes  pursuant  to the  requirements  of Section  803 or
         Section 1015 or otherwise;

(9)      to add any additional Events of Default; or

(10)     to evidence and provide for the acceptance of appointment  hereunder by
         a successor Trustee pursuant to the requirements of Section 609.

SECTION 111.  AMENDMENT TO SECTION 902.  Section 902 of the  Indenture is hereby
amended by deleting  the existing  Section 902 in its entirety and  replacing it
with the following:

         SECTION 902.  SUPPLEMENTAL INDENTURES WITH CONSENT OF HOLDERS.
                       -----------------------------------------------

              With the  consent of the  Holders  of not less than a majority  in
         aggregate  principal  amount of the  Outstanding  Notes, by Act of said
         Holders  delivered  to the  Company,  the Parent and the  Trustee,  the
         Company and the Parent, when authorized by a Board Resolution,  and the
         Trustee may enter into an indenture or indentures  supplemental  hereto
         for the purpose of adding any  provisions  to or changing in any manner
         or eliminating  any of the provisions of this Indenture or of modifying
         in any manner the rights of the Holders under this Indenture  PROVIDED,
         HOWEVER, that no such supplemental indenture shall, without the consent
         of the Holder of each Outstanding Note affected thereby:

(1)      change the Stated  Maturity of the principal of or any  installment  of
         interest  on, any Note,  or reduce the  principal  amount  thereof  (or
         premium or Liquidated Damages, if any) or the rate of interest thereon,
         alter any  redemption  provision with respect to any Note or change the
         coin or currency in which any Note or any premium or Liquidate  Damages
         or the  interest  thereon is payable,  or impair the right to institute
         suit for the  enforcement of any such payment after the Stated Maturity
         thereof  (or,  in the case of  redemption,  on or after the  Redemption
         Date);

(2)      amend,  change or modify  the  obligation  of the  Company  to make and
         consummate an Excess  Proceeds  Offer with respect to any Asset Sale in
         accordance  with Section 1017 or the  obligation of the Company to make
         and  consummate  a Change of Control  Offer in the event of a Change of
         Control  in  accordance  with  Section  1010,  including,  in each case
         amending, changing or modifying any definition relating thereto;

(3)      reduce the percentage of the principal amount of the Outstanding Notes,
         the  consent of whose  Holders is  required  for any such  supplemental
         indenture,  or the consent of whose  Holders is required for any waiver
         of compliance  with certain  provisions  and defaults of this Indenture
         and their consequences provided for in this Indenture;

(4)      modify  any of the  provisions  of this  Section  or  Sections  513 and
         Section  1019,  except to  increase  the  percentage  of the  aggregate
         principal  amount  of  Outstanding  Notes  required  for  such  actions
         thereunder  or  to  provide  that  certain  other  provisions  of  this
         Indenture  cannot be  modified  or waived  without  the  consent of the
         Holder of each Outstanding Note affected thereby;

(5)      except as  otherwise  permitted  under  Article  Eight  consent  to the
         assignment  or  transfer  by the  Company  of any of  their  rights  or
         obligations under the Indenture; or

(6)      release any Lien created by the Amended and Restated Pledge  Agreement,
         except in accordance  with the terms of the Amended and Restated Pledge
         Agreement

(7)      modify the provisions of this Indenture  relating to the Guarantee in a
         manner adverse to the Holders.

   It shall not be  necessary  for any Act of  Holders  under  this  Section  to
approve the particular form of any proposed supplemental indenture, but it shall
be sufficient if such Act shall approve the substance thereof.



                            AMENDMENTS TO "COVENANTS"

SECTION 112.      AMENDMENT TO SECTION 1002.

Section 1002 of the Indenture is hereby amended by deleting the existing Section
1002 in its entirety and replacing it with the following:

                  SECTION 1002.  MAINTENANCE OF OFFICE OR AGENCY:
                                 -------------------------------

                  The Company and the Parent  shall  maintain in The City of New
York,  an office or agency  where  Notes may be  presented  or  surrendered  for
payment, where Notes may be surrendered for registration of transfer or exchange
and where notices and demands to or upon the Company or the Parent in respect of
the Notes,  this Indenture or the Guarantees may be served.  The Corporate Trust
Office of the  Trustee  shall be such  office or agency of the  Company  and the
Parent unless the Company or the Parent shall  designate and maintain some other
office or agency for one or more of such  purposes.  The  Company and the Parent
will give prompt  written notice to the Trustee of any change in the location of
any such office or agency.  If at any time the Company or the Parent  shall fail
to  maintain  any such  required  office or agency or shall fail to furnish  the
Trustee with the address thereof,  such presentations,  surrenders,  notices and
demand may be made or served at the Corporate Trust Administration office of the
Trustee,  and the  Company  and the Parent  hereby  appoint the Trustee as their
agent to receive all such presentations, surrenders, notices and demands.

                  The  Company  and  the  Parent  may  also  from  time  to time
designate  one or more other  offices or agencies  (in or outside of The City of
New York) where the Notes may be  presented or  surrendered  for any or all such
purposes and may from time to time rescind any such designation;  PROVIDED, that
such  designation  or rescission  shall not in any manner relieve the Company or
the Parent of their  obligation  to  maintain an office or agency in The City of
New York for such purposes.  The Company and the Parent will give prompt written
notice to the Trustee of any such  designation  or rescission  and any change in
the location of any such other office or agency.

SECTION 113.  AMENDMENT TO SECTION 1003. Section 1003 of the Indenture is hereby
amended by deleting the existing  Section 1003 in its entirety and  replacing it
with the following:

                      SECTION 1003. MONEY FOR NOTE PAYMENTS TO BE HELD IN TRUST
                                    -------------------------------------------

                  If the  Company or the  Parent  shall at any time act as their
own Paying Agent,  they will, on or before each due date of the principal of (or
premium,  if any) or interest on any of the Notes,  segregate  and hold in trust
for the  benefit of the Persons  entitled  thereto a sum  sufficient  to pay the
principal  of (or  premium,  if any) or interest so becoming due until such sums
shall be paid to such  Persons or otherwise  disposed of as herein  provided and
will promptly notify the Trustee of their action or failure so to act.

                  Whenever  the  Company  and the Parent  shall have one or more
Paying  Agents for the Notes,  the Company  and/or the Parent will, on or before
10:00 a.m. on each due date of the principal of (or premium, if any) or interest
on any Notes,  deposit with a Paying Agent a sum sufficient to pay the principal
(and premium,  if any) or interest so becoming due, such sum to be held in trust
for the benefit of the Persons entitled to such principal,  premium or interest,
and (unless such Paying Agent is the Trustee) the Company and/or the Parent will
promptly notify the Trustee of such action or any failure so to act.

         The Company and the Parent  shall cause each Paying  Agent  (other than
the Trustee) to execute and deliver to the Trustee an  instrument  in which such
Paying Agent shall agree with the  Trustee,  subject to the  provisions  of this
Section, that such Paying Agent will:

(1)      hold all  sums  held by it for the  payment  of the  principal  of (and
         premium,  if any) or  interest on Notes in trust for the benefit of the
         Persons  entitled thereto until such sums shall be paid to such Persons
         or otherwise disposed of as herein provided;

(2)      give the Trustee notice of any default by the Company or the Parent (or
         any other  obligor  upon the  Notes) in the  making of any  payment  of
         principal (and premium, if any) or interest; and

(3)      at any  time  during  the  continuance  of any such  default,  upon the
         written  request of the Trustee,  forthwith pay to the Trustee all sums
         so held in trust by such Paying Agent.

         The Company or the Parent may at any time, for the purpose of obtaining
the satisfaction and discharge of this Indenture or for any other purpose,  pay,
or by Company  Order or Parent  Order  direct any  Paying  Agent to pay,  to the
Trustee all sums held in trust by the Company,  the Parent or such Paying Agent,
such sums to be held by the  Trustee  upon the same  trusts as those  upon which
such sums where held by the Company,  the Parent or such Paying Agent; and, upon
such  payment by any Paying  Agent to the  Trustee,  such Paying  Agent shall be
released from all further liability with respect to such sums.

         Any money  deposited with the Trustee or any Paying Agent, or then held
by the Company or the Parent,  in trust for the payment of the  principal of (or
premium,  if any) or interest on any Note and remaining  unclaimed for two years
after such principal, premium, interest has become due and payable shall be paid
to the  Company on Company  Request or to the Parent on Parent  Request,  or (if
then held by the Company or the Parent) shall be discharged from such trust. The
Holder of such Note, as an unsecured  general  creditor,  shall look  thereafter
only to the Company and the Parent for the payment thereof, and all liability of
the  Trustee or such  Paying  Agent with  respect to such trust  money,  and all
liability  of the  Company  or the Parent as trustee  thereof,  shall  thereupon
cease;  PROVIDED,  HOWEVER,  that the Trustee or such Paying Agent, before being
required to make any such  repayment,  may at the expense of the Company and the
Parent  cause to be  published  once,  in a newspaper  published  in the English
language,  customarily published on each Business Day and of general circulation
in the  Borough  of  Manhattan,  The City of New York,  notice  that such  money
remains unclaimed and that, after a date specified  therein,  which shall not be
less than 30 days from the date of such  publication,  any unclaimed  balance of
such money then  remaining  will be repaid to the Company or the Parent,  as the
case may be.

SECTION 114.  AMENDMENT TO SECTION 1004. Section 1004 of the Indenture is hereby
amended by deleting the existing  Section 1004 in its entirety and  replacing it
with the following:

                  SECTION 1004.  CORPORATE EXISTENCE.
                                 -------------------

                  Subject to Article Eight, (a) the Company shall do or cause to
be done all things  necessary  to preserve and keep in full force and effect the
corporate  existence,  rights  (charter and  statutory)  and  franchises  of the
Company and each of its Subsidiaries, and (b) the Parent shall do or cause to be
done all  things  necessary  to  preserve  and keep in full force and effect the
corporate existence, rights (charter and statutory) and franchises of the Parent
and each of its  Subsidiaries;  PROVIDED,  as the case may be, that  neither the
Company nor the Parent,  as the case may be,  shall be required to preserve  any
such right or  franchise if the Board of Directors of the Company or the Parent,
as the case may be, shall determine that the  preservation  thereof is no longer
desirable  in the  conduct of the  business of the Company or the Parent and its
respective Subsidiaries as a whole.

SECTION 115.  AMENDMENT TO SECTION 1005. Section 1005 of the Indenture is hereby
amended by deleting the existing  Section 1005 in its entirety and  replacing it
with the following:

                  SECTION 1005.  PAYMENT OF TAXES AND OTHER CLAIMS.
                                 ---------------------------------

                  (a) The Company  shall pay or discharge or cause to be paid or
discharged,  before the same shall become  delinquent,  (i) all material  taxes,
assessments and  governmental  charges levied or imposed upon the Company or any
of its  Subsidiaries  or upon the income,  profits or property of the Company or
any Restricted Company Subsidiary and (ii) all material lawful claims for labor,
materials and supplies,  which,  if unpaid,  might by law become a lien upon the
property of the Company or any of its Subsidiaries; and (b) the Parent shall pay
or  discharge  or cause to be paid or  discharged,  before the same shall become
delinquent,  (i) all material taxes, assessments and governmental charges levied
or  imposed  upon the  Parent  or any of its  Subsidiaries  or upon the  income,
profits or  property  of the Parent or any  Restricted  Subsidiary  and (ii) all
material  lawful claims for labor,  materials and  supplies,  which,  if unpaid,
might  by law  become a lien  upon  the  property  of the  Parent  or any of its
Subsidiaries PROVIDED, that neither the Company nor the Parent shall be required
to pay or discharge or cause to be paid or discharged any such tax,  assessment,
charge or claim whose amount,  applicability  or validity is being  contested in
good faith by appropriate proceedings.

SECTION 116.  AMENDMENT TO SECTION 1006. Section 1006 of the Indenture is hereby
amended by deleting the existing  Section 1006 in its entirety and  replacing it
with the following:

                  SECTION 1006. MAINTENANCE OF PROPERTIES.
                                -------------------------

                  (a) The Company shall,  or shall cause its Restricted  Company
Subsidiaries  to,  cause all  material  properties  owned by the  Company or any
Restricted  Company  Subsidiary  or used or held for use in the  conduct  of its
business or the business of any Restricted  Company  Subsidiary to be maintained
and kept in good condition,  repair and working order  (reasonable wear and tear
excepted) and supplied  with all  necessary  equipment and will cause to be made
all necessary  repairs,  renewals,  replacements,  betterments and  improvements
thereof,  all as in the  judgment of the Company  may be  necessary  so that the
business carried on in connection  therewith may be properly and  advantageously
conducted at all times,  and (b) the Parent shall, or shall cause the Restricted
Subsidiaries  to,  cause  all  material  properties  owned by the  Parent or any
Restricted  Subsidiary or used or held for use in the conduct of its business or
the business of any  Restricted  Subsidiary  to be  maintained  and kept in good
condition,  repair and working  order  (reasonable  wear and tear  excepted) and
supplied  with all  necessary  equipment and will cause to be made all necessary
repairs, renewals, replacements, betterments and improvements thereof, all as in
the judgment of the Parent may be  necessary so that the business  carried on in
connection therewith may be properly and advantageously  conducted at all times;
PROVIDED,  that nothing in this Section 1006 shall  prevent a Restricted  Entity
from  discontinuing  the  maintenance of any of such  properties or disposing of
them as otherwise  permitted herein if such discontinuance or disposition is, in
the  judgment of the  Parent,  desirable  in the conduct of its  business or the
business  of such  Restricted  Entity and not  disadvantageous  in any  material
respect to the Holders.

SECTION 117.  AMENDMENT TO SECTION 1007. Section 1007 of the Indenture is hereby
amended by deleting the existing  Section 1007 in its entirety and  replacing it
with the following:

                  SECTION 1007.  INSURANCE.
                                 ---------

(a) The Company  shall at all times keep all of its and its  Restricted  Company
Subsidiaries'  properties which are of an insurable nature insured,  and (b) the
Parent  shall  at all  times  keep all of its and the  Restricted  Subsidiaries'
properties, which are of an insurable nature insured, in each case with insurers
believed  by the  Company or the  Parent (as the case may be) to be  responsible
against  loss or damage to the extent  that  property  of similar  character  is
usually  so  insured  by  corporations   similarly   situated  and  owning  like
properties.



SECTION 118.  AMENDMENT TO SECTION 1008. Section 1008 of the Indenture is hereby
amended by deleting the existing  Section 1008 in its entirety and  replacing it
with the following:

                  SECTION 1008.  STATEMENT BY OFFICERS AS TO DEFAULT.
                                 -----------------------------------

(a) The  Company and the Parent  shall  deliver to the  Trustee,  within 50 days
after the end of each  fiscal  quarter and within 120 days after the end of each
fiscal year, a brief certificate from the principal executive officer, principal
financial officer or principal accounting officer of each of the Company and the
Parent as to his or her knowledge of the compliance of the Company or the Parent
(as the case may be) with all  conditions  and  covenants  under this  Indenture
since the beginning of such quarter or year, as the case may be. For purposes of
this Section 1008(a),  such compliance shall be determined without regard to any
period of grace or requirement of notice under this Indenture.

(b) When any Default has occurred and is continuing under this Indenture,  or if
the  trustee  for or the holder of any other  evidence  of  Indebtedness  of any
Restricted  Entity  gives any notice or takes any other action with respect to a
claimed default (other than with respect to Indebtedness in the principal amount
of less  than  $7,500,000  (or the  equivalent  thereof  in one or more  foreign
currencies)),  the  Company or the Parent (as the case may be) shall  deliver to
the Trustee by  registered  or certified  mail or by facsimile  transmission  an
Officers' Certificate  specifying such event, notice or other action within five
Business  Days of an officer  of the  Company or the Parent (as the case may be)
becoming aware of its occurrence.

SECTION 119.  AMENDMENT TO SECTION 1009. Section 1009 of the Indenture is hereby
amended by deleting the existing  Section 1009 in its entirety and  replacing it
with the following:

                  SECTION 1009.  PROVISION OF FINANCIAL STATEMENTS.
                                 ----------------------------------

(a) Subject to Section  1009(b) below the Company and the Parent shall file on a
timely basis with the Commission, to the extent such filings are accepted by the
Commission and whether or not the Company or the Parent (as the case may be) has
a class of securities  registered  under the Exchange  Act, the annual  reports,
quarterly  reports  and other  documents  that the Company or the Parent (as the
case may be) would be required to file if it were subject to Section 13 or 15(d)
of the Exchange Act.

(b) Provided always that the Parent  complies fully with its filing  obligations
pursuant to Section  1009(a)  above,  the Company  shall be entitled in its sole
discretion  to rely on any  applicable  law,  rule,  regulation  or SEC approval
(together  "Relevant   Saving"),   whether  in  force  at  the  date  hereof  or
subsequently  promulgated,  to limit the  scope of or cease to  comply  with its
filing  obligations  pursuant to Section 1009(a) to the maximum extent permitted
by such Relevant Saving.

(c) The Parent shall also be required (i) to file with the Trustee,  and provide
to each Holder of Notes, without cost to such Holder, copies of such reports and
documents  within 15 days after the date on which the Parent  files such reports
and  documents  with the  Commission  or the date on which the  Parent  would be
required to file such reports and documents if the Parent were so required,  and
(ii) if filing such reports and documents with the Commission is not accepted by
the  Commission  or is  prohibited  under  the  Exchange  Act,  to supply at the
Parent's  cost copies of such reports and  documents to any  prospective  holder
promptly upon request.  Delivery of such reports,  information  and documents to
the Trustee is for informational purposes only and the Trustee's receipt of such
shall not constitute constructive notice of any information contained therein or
determinable  from  information   contained  therein,   including  the  Parent's
compliance  with any of its  covenants  hereunder  (as to which the  Trustee  is
entitled to rely exclusively on Officers' Certificates).

SECTION 120.  AMENDMENT TO SECTION 1010. Section 1010 of the Indenture is hereby
amended by deleting the existing  Section 1010 in its entirety and  replacing it
with the following:

                  SECTION 1010.  PURCHASE OF NOTES UPON CHANGE OF CONTROL.
                                 ----------------------------------------

(a) Upon the  occurrence  of a Change of Control at any time and  subject to the
compliance  by the  Company  or the  Parent  (as  the  case  may  be)  with  the
requirements  of paragraph (b) of this Section 1010,  each Holder shall have the
right to require that the Company  repurchase  all of such  Holder's  Notes,  in
whole or in part in  integral  multiples  of $1,000,  at a  purchase  price (the
"Change of Control  Purchase  Price") in cash in an amount  equal to 101% of the
principal  amount thereof,  plus accrued and unpaid interest thereon to the date
of purchase,  in accordance  with the procedures set forth in paragraphs (b) and
(c) of this Section 1010 (the "Change of Control Offer").

(b) Within 15 days  following any Change of Control,  the Company (if the Change
of  Control  relates  to the  Company)  or the  Parent (if the Change of Control
relates to the Parent) shall notify the Trustee  thereof and give to each Holder
of the Notes in the manner provided in Section 105 a notice stating:

(1)      that a Change of  Control  has  occurred  and that such  Holder has the
         right to require the Company to repurchase  such Holder's  Notes at the
         Change of Control Purchase Price;

(2)      the  circumstances  and relevant facts regarding such Change of Control
         (including  information  with respect to pro forma  historical  income,
         cash flow and  capitalization  after  giving  effect to such  Change of
         Control);

(3)      the Change of Control  Purchase  Price and a purchase date (the "Change
         of Control  Purchase  Date")  which shall be a Business  Day no earlier
         than 30 days  nor  later  than 60 days  from the date  such  notice  is
         mailed,  or such later date as is necessary to comply with requirements
         under  the  Exchange  Act  or  any   applicable   securities   laws  or
         regulations;

(4)      that any Note not tendered will continue to accrue interest;

(5)      that,  unless  the  Company  defaults  in the  payment of the Change of
         Control  Purchase Price, any Notes accepted for payment pursuant to the
         Change of Control Offer will cease to accrue  interest on and after the
         Change of Control Purchase Date; and

(6)      the  instructions  a Holder  must  follow  in  order to have its  Notes
         repurchased in accordance with paragraph (c) of this Section.

(c) Holders electing to have Notes purchased shall be required to surrender such
Notes to the  Company  at the  address  specified  in the  notice at least  five
Business  Days prior to the Change of Control  Purchase  Date.  Holders shall be
entitled to withdraw  their  election  if the Company  receives,  not later than
three  Business Days prior to the Change of Control  Purchase  Date, a facsimile
transmission  or letter  setting  forth the name of the  Holder,  the  principal
amount  of the  Notes  delivered  for  purchase  by the  Holder  as to which his
election is to be withdrawn and a statement that such Holder is withdrawing  his
election to have such Notes purchased. Holders whose Notes are purchased only in
part shall be issued new Notes and Guarantees  equal in principal  amount to the
unpurchased portion of the Notes surrendered, which unpurchased portion shall be
equal to $1,000 in principal amount or integral multiples thereof.

SECTION 121.  AMENDMENT TO SECTION 1011. Section 1011 of the Indenture is hereby
amended by deleting the existing  Section 1011 in its entirety and  replacing it
with the following:

                  SECTION 1011.  LIMITATION ON INDEBTEDNESS.
                                 --------------------------

                  Neither the Company nor the Parent  shall , and neither  shall
they permit any Restricted Subsidiary to, incur any Indebtedness  (including any
Acquired  Indebtedness)  other than  Permitted  Indebtedness;  PROVIDED that the
Company  or the Parent  (as the case may be) may Incur  Indebtedness  if, at the
time of such incurrence, the Consolidated Indebtedness to Consolidated Operating
Cash Flow Ratio of the  Company or the  Parent,  as the case may be,  would have
been  less  than  or  equal  to (i)  6.0 to  1.0  but  greater  than  zero,  for
Indebtedness  incurred on or prior to December 31, 2001,  or (ii) 5.0 to 1.0 but
greater than zero, for  Indebtedness  incurred  thereafter.  For the purposes of
determining  compliance  with this  Section  1011,  in the event that an item of
Indebtedness  or any portion  thereof meets the criteria of more than one of the
type of  Indebtedness  that any  Restricted  Entity is permitted  to Incur,  the
Parent will have the right,  in its sole  discretion,  to classify  such item of
Indebtedness or portion thereof at the time of its incurrence and the Company or
the Parent,  as the case may be, will only be required to include the amount and
type of such  Indebtedness  or portion  thereof under the clause  permitting the
Indebtedness as so classified.

SECTION 122.  AMENDMENT TO SECTION 1012. Section 1012 of the Indenture is hereby
amended by deleting the existing  Section 1012 in its entirety and  replacing it
with the following:

                  SECTION 1012.  LIMITATION ON RESTRICTED PAYMENTS.
                                 ---------------------------------

                  The  Parent  shall not,  and shall not  permit any  Restricted
Subsidiary or, in the case of paragraphs (3) and (4) below, the Company to take,
directly or indirectly, any of the following actions:

(a)      (1)      declare or pay any dividend  on, or make any  distribution
                  to holders of, any shares of the  Capital  Stock of the Parent
                  (other  than  dividends  or  distributions  payable  solely in
                  shares of its Qualified Capital Stock or in options,  warrants
                  or other rights to acquire  such shares of  Qualified  Capital
                  Stock);

         (2)      purchase,  redeem or  otherwise  acquire  or retire for value,
                  directly  or  indirectly,  any shares of Capital  Stock of the
                  Parent or any Capital  Stock of any of its  Affiliates  (other
                  than  Capital  Stock  of  the  Company  or  any  Wholly  Owned
                  Restricted  Subsidiary)  or any  options,  warrants  or  other
                  rights to acquire such shares of Capital Stock;

         (3)      make any principal payment on, or repurchase,  redeem, defease
                  or otherwise acquire or retire for value,  prior to the Stated
                  Maturity of any principal payment or any sinking fund payment,
                  any  Indebtedness  of the  Parent  or of the  Company  that is
                  expressly  subordinated in right of payment to the Notes or to
                  the Guarantees, as the case may be; or

         (4)      make any Investment  (other than any Permitted  Investment) in
                  any Person;

(such payments or other actions described in (but not excluded from) clauses (1)
through (4) are collectively  referred to as "Restricted  Payments");  unless at
the time of, and  immediately  after giving  effect to, the proposed  Restricted
Payment  (the  amount of any such  Restricted  Payment,  if other than cash,  as
determined by the Board of Directors of the Parent, whose determination shall be
conclusive  and  evidenced  by a Board  Resolution),  (A) no Default or Event of
Default  shall have  occurred and be  continuing,  (B) the Parent could incur at
least  $1.00 of  additional  Indebtedness  (other than  Permitted  Indebtedness)
pursuant to Section 1011 and (C) the aggregate amount of all Restricted Payments
declared or made after the Issue Date shall not exceed the sum of:

(i)               100% of  Consolidated  Operating  Cash Flow of the Parent less
                  1.5 times Consolidated  Interest Expense of the Parent or (ii)
                  if  Consolidated  Operating  Cash  Flow  of  the  Parent  is a
                  negative,  minus 100% of such negative amount, in each case on
                  a cumulative  basis for the period  beginning on the first day
                  of the Parent's  first fiscal quarter after the Issue Date and
                  ending on the last day of the  Parent's  last  fiscal  quarter
                  ending prior to the date of such proposed  Restricted Payment;
                  plus

(ii)              the  aggregate  Net Cash Proceeds and the Fair Market Value of
                  Telecommunications  Assets  or Voting  Stock of a Person  that
                  becomes a Restricted  Subsidiary,  the assets of which consist
                  primarily of Telecommunications Assets, received by the Parent
                  after  the Issue  Date as  capital  contributions  or from the
                  issuance or sale (other than to any  Subsidiary)  of shares of
                  Qualified  Capital  Stock of the  Parent  (including  upon the
                  exercise of options, warrants or rights) or warrants,  options
                  or rights to purchase shares of Qualified Capital Stock of the
                  Parent; plus

(iii)             the  aggregate  Net Cash Proceeds and the Fair Market Value of
                  Telecommunications  Assets  or Voting  Stock of a Person  that
                  becomes a Restricted  Subsidiary,  the assets of which consist
                  primarily of Telecommunications Assets, received by the Parent
                  after the Issue Date from the  issuance or sale (other than to
                  any Subsidiary) of debt securities or Redeemable Capital Stock
                  that have  been  converted  into or  exchanged  for  Qualified
                  Capital  Stock of the Parent,  together with the aggregate Net
                  Cash Proceeds and the Fair Market Value of  Telecommunications
                  Assets or Voting  Stock of a Person that  becomes a Restricted
                  Subsidiary,   the  assets  of  which   consist   primarily  of
                  Telecommunications  Assets, received by the Parent at the time
                  of such conversion or exchange; plus

(iv)              to the extent not otherwise included in Consolidated Operating
                  Cash Flow of the Parent, an amount equal to the sum of (a) the
                  net   reduction   in   Investments   (other   than   Permitted
                  Investments)   in  any  Person   (other   than  a   Restricted
                  Subsidiary)  resulting  from the payment in cash of dividends,
                  repayments of loans or advances or other  transfers of assets,
                  in each case to the Parent or any Restricted  Subsidiary after
                  the Issue Date from such  Person and (b) the amount of any net
                  reduction in Investments  resulting from the  redesignation of
                  an Unrestricted  Subsidiary as a Restricted Subsidiary (valued
                  as provided in the definition of  "Investment") at the time of
                  such  redesignation;  PROVIDED that, in the case of (a) or (b)
                  above,  the foregoing sum shall not exceed the total amount of
                  Investments (other than Permitted Investments) previously made
                  in such Person or  Unrestricted  Subsidiary  by the Parent and
                  its Restricted Subsidiaries.

(b)  Notwithstanding   paragraph  (a)  above,  the  Parent  and  any  Restricted
Subsidiary  may take the  following  actions so long as (with respect to clauses
(2) through (6) below) no Default or Event of Default shall have occurred and be
continuing:

(1)      the  payment  of  any  dividend  within  60  days  after  the  date  of
         declaration thereof, if at such date of declaration the payment of such
         dividend would have complied with the provisions of paragraph (a) above
         and such  payment  will be  deemed  to have  been  paid on such date of
         declaration for purposes of the  calculation  required by paragraph (a)
         above;

(2)      the purchase,  redemption or other  acquisition or retirement for value
         of any shares of Capital  Stock of the Parent (x) in  exchange  for, or
         out of the Net Cash Proceeds of a substantially concurrent issuance and
         sale (other than to a Subsidiary) of, shares of Qualified Capital Stock
         of the Parent;  or (y) that are held by former  officers,  employees or
         directors (or their estates or  beneficiaries  under their  estates) of
         the  Parent or any of its  Subsidiaries;  PROVIDED  that the  aggregate
         amount of such purchase,  redemption or other acquisition or retirement
         for value  under  this  clause  (y) will not  exceed  $250,000  (or the
         equivalent  thereof  in one or more  foreign  currencies)  in any given
         fiscal year;

(3)      the purchase, redemption, defeasance or other acquisition or retirement
         for  value  of  any  Indebtedness  of  the  Parent  that  is  expressly
         subordinated  in right of payment to the Notes in exchange  for, or out
         of the Net Cash  Proceeds of a  substantially  concurrent  issuance and
         sale (other than to a Subsidiary) of, shares of Qualified Capital Stock
         of the Parent;

(4)      the  purchase  of any  Indebtedness  of the Company  that is  expressly
         subordinated  in right of payment to the Notes or the  purchase  of any
         Indebtedness  of the Parent that is expressly  subordinated in right of
         payment to the Guarantees, in each case at a purchase price not greater
         than 101% of the principal  amount  thereof in the event of a Change of
         Control in accordance with provisions similar to Section 1010; PROVIDED
         that prior to such  purchase the Company has made the Change of Control
         Offer as provided in such  covenant  with  respect to the Notes and has
         purchased  all Notes validly  tendered for payment in  connection  with
         such Change of Control Offer;

(5)      the purchase, redemption, defeasance or other acquisition or retirement
         for value of Indebtedness  (other than Redeemable Capital Stock) of the
         Parent that is expressly  subordinated in right of payment to the Notes
         in  exchange  for, or out of the Net Cash  Proceeds of a  substantially
         concurrent incurrence (other than to a Subsidiary) of, new Indebtedness
         of the Parent that is expressly subordinated in right of payment to the
         Notes,  so long as (A) the  principal  amount of such new  Indebtedness
         does not exceed the principal  amount (or, if such  Indebtedness  being
         refinanced  provides  for an  amount  less  than the  principal  amount
         thereof  to be due  and  payable  upon a  declaration  of  acceleration
         thereof,  such lesser  amount as of the date of  determination)  of the
         Indebtedness  being  so  purchased,  redeemed,  defeased,  acquired  or
         retired,  plus the lesser of (x) the amount of any premium  required to
         be paid in connection  with such  refinancing  pursuant to the terms of
         the  Indebtedness  being  refinanced  or (y) the amount of any  premium
         reasonably  determined  by the Parent as necessary to  accomplish  such
         refinancing, plus, in either case, the amount of expenses of the Parent
         incurred in connection with such refinancing; (B) such new Indebtedness
         is subordinated to the Notes to the same extent as such Indebtedness so
         purchased,  redeemed,  defeased,  acquired or retired; and (C) such new
         Indebtedness  has an Average  Life longer than the Average  Life of the
         Indebtedness  being refinanced and a final Stated Maturity of principal
         later  than  the  final  Stated  Maturity  of  the  Indebtedness  being
         refinanced; and

(6)      the  payment  of cash in lieu of  fractional  shares  of  Common  Stock
         pursuant to the Warrant Agreement.

The actions  described in clauses (1) through (4) and (6) of this  paragraph (b)
shall be Restricted  Payments  that shall be permitted in  accordance  with this
paragraph (b) but shall reduce the amount that would  otherwise be available for
Restricted  Payments  under  clause  (C) of  paragraph  (a) above.  The  actions
described in clause (5) of this paragraph (b) shall be Restricted  Payments that
shall be permitted in  accordance  with this  paragraph (b) and shall not reduce
the amount that would  otherwise  be available  for  Restricted  Payments  under
clause (C) of paragraph (a).

SECTION 123.  AMENDMENT TO SECTION 1013. Section 1013 of the Indenture is hereby
amended by deleting the existing  Section 1013 in its entirety and  replacing it
with the following:

    SECTION 1013.  LIMITATION ON ISSUANCE AND SALE OF CAPITAL STOCK OF THE
                   -------------------------------------------------------
                   COMPANY AND RESTRICTED SUBSIDIARIES.
                   -----------------------------------

                  Neither the Company nor the Parent  shall , and neither  shall
they permit any Restricted Subsidiary to, issue or sell any Capital Stock of the
Company or of a  Restricted  Subsidiary  (other than to a  Restricted  Entity );
PROVIDED,  that this  covenant  shall not  prohibit  (i)  issuances  or sales of
Capital Stock of the Company or a Restricted  Subsidiary if,  immediately  after
giving  effect to such  issuance or sale,  the Company would no longer be Wholly
Owned  by the  Parent  or  such  Restricted  Subsidiary  would  no  longer  be a
Restricted  Subsidiary and any Investment in such Person  remaining after giving
effect to such  issuance  or sale  would  have been  permitted  to be made under
Section 1012 if made on the date of such  issuance and sale,  (ii) the ownership
by  directors  of  directors'  qualifying  shares or the  ownership  by  foreign
nationals of Capital Stock of the Company or of any  Restricted  Subsidiary,  to
the extent  mandated by applicable  law,  (iii) the issuance and sale of Capital
Stock of the Company or any Restricted Subsidiary owned by any Restricted Entity
in compliance with Section 1017; PROVIDED that such Restricted  Subsidiary would
remain a Restricted  Subsidiary  after such transaction or (iv) the issuance and
sale of Capital Stock of the Company or any Restricted  Subsidiary to any Person
that  transfers,  leases,  licenses or grants a right to use  Telecommunications
Assets  to the  Parent  or the  Company  (as the  case  may be)  pursuant  to an
Incumbent  Agreement;   PROVIDED  that,  after  such  issuance  and  sale,  such
subsidiary remains a Restricted  Subsidiary and, in the good faith determination
of the Board of  Directors  of the  Parent,  the Fair  Market  Value of any such
transfer,  lease, license or grant is not less than the Fair Market Value of the
Capital Stock of such Restricted Subsidiary issued and sold in respect thereof.

SECTION 124.  AMENDMENT TO SECTION 1014. Section 1014 of the Indenture is hereby
amended by deleting the existing  Section 1014 in its entirety and  replacing it
with the following:

                  SECTION 1014.  LIMITATION ON TRANSACTIONS WITH AFFILIATES.
                                 ------------------------------------------

                  Neither the Company nor the Parent  shall,  and neither  shall
they  permit  any  Restricted  Subsidiary  to,  enter  into or  suffer to exist,
directly  or  indirectly,  any  transaction  or series of  related  transactions
(including,  the  sale,  purchase,  exchange  or lease of  assets,  property  or
services) with, or for the benefit of, any Affiliate of the Parent,  the Company
or any  Restricted  Subsidiary  (other  than a  Restricted  Entity so long as no
Affiliate of the Parent (other than a Restricted  Entity) shall beneficially own
Capital Stock in such Restricted  Entity) unless (i) such  transaction or series
of  related  transactions  are on  terms,  taken  as a  whole,  that are no less
favorable to the Company, the Parent, or such Restricted Subsidiary, as the case
may be, than those that could have been obtained in an arm's length  transaction
with unrelated third parties that are not  Affiliates;  (ii) with respect to any
transaction or series of related transactions involving aggregate  consideration
equal to or greater than  $5,000,000 (or the  equivalent  thereof in one or more
foreign  currencies),  the Parent will deliver an Officers'  Certificate  to the
Trustee  certifying  that such  transaction  or series of  related  transactions
complies  with clause (i) above;  and (iii) with respect to any  transaction  or
series of related  transactions  involving aggregate  consideration in excess of
$10,000,000 (or the equivalent thereof in one or more foreign  currencies),  the
Parent will deliver the Officers'  Certificates  described in clause (ii) above,
which will also certify that such  transaction or series of related  transaction
has been approved by a majority of the  Disinterested  Directors of the Board of
Directors of the Parent,  or that the Parent has obtained a written opinion from
an independent  financial  expert  certifying  that the financial  terms of such
transaction or series of related transactions, taken as a whole, are fair to the
Company,  the Parent, or the Restricted  Subsidiary,  as the case may be, from a
financial point of view: PROVIDED, that this covenant shall not restrict (1) any
transaction  or series of  related  transactions  between  the  Company  and the
Parent, (2) any transaction or series of related transactions between either the
Company  or the  Parent  (as the case may be) and one or more of the  Restricted
Subsidiaries  or between  the  Restricted  Subsidiaries,  (3) the Company or the
Parent from paying  reasonable and customary  regular  compensation  and fees to
directors  of any  Restricted  Entity who are not  employees  of any  Restricted
Entity, (4) the performance of the Parent's  obligations under the Stockholders'
Agreement,  dated as of March 30, 2000, among the Parent and the Investors named
therein, as amended and supplemented from time to time or (5) the performance of
the Company's  obligations  under the  Investment and  Stockholders'  Agreement,
dated as of  October  31,  1997,  among the  Company,  David  Schaeffer  and the
Investors named therein, as amended; the Investment and Stockholders' Agreement,
dated as of August 28, 1995,  by and among the Company and the  Investors  named
therein; the Non-Qualified Stock Option Agreement, dated August 4, 1997, between
the Company and Richard Jalkut;  and the Employment  Agreement,  dated August 4,
1997,  between the Company and Richard  Jalkut,  in each case as amended through
the Issue Date;  PROVIDED that any amendments or  modifications  to the terms of
transactions  described in this clause (5) will be (x) no less  favorable to the
Parent or the  Company,  as the case may be,  than  those  that  could have been
obtained in an arm's length transaction with unrelated third parties who are not
Affiliates  and (y)  approved  by the Board of  Directors  of the  Parent or the
Company,  as the  case  may  be,  (including  a  majority  of the  Disinterested
Directors of the relevant  Board of Directors)  (6) the making of any Restricted
Payment  not  prohibited  by  Section  1012 and (7)  loans or  advances  made to
directors,  officers or employees of any  Restricted  Entity,  or  guarantees in
respect  thereof or  otherwise  made on their  behalf,  in  respect of  expenses
incurred in the ordinary course of business,  in an aggregate  principal  amount
not to  exceed  $500,000  (or the  equivalent  thereof  in one or  more  foreign
currencies in any calendar year.)

SECTION 125.  AMENDMENT TO SECTION 1015. Section 1015 of the Indenture is hereby
amended by deleting the existing  Section 1015 in its entirety and  replacing it
with the following:

                  SECTION 1015.  LIMITATION ON LIENS.
                                 -------------------

                  Neither the Company nor the Parent  shall,  and neither  shall
they permit any Restricted Subsidiary to, directly or indirectly, create, incur,
assume  or  suffer to exist any Lien  (other  than  Permitted  Liens) on or with
respect to any of its property or assets  (including any shares of Capital Stock
or  Indebtedness of the Company or any Restricted  Subsidiary)  whether owned at
the Issue Date (in the case of the Company) or the  Amendment  Date (in the case
of the  Parent) or  thereafter  acquired,  or any  income,  profits or  proceeds
therefrom,  or assign or otherwise  convey any right to receive income  thereon,
unless (x) in the case of any Lien securing  Indebtedness  of the Company or the
Parent (as the case may be) that is expressly  subordinated  in right of payment
to the  Notes,  the  Notes are  secured  by a Lien on such  property,  assets or
proceeds  that is  senior  in  priority  to such Lien and (y) in the case of any
other Lien, the Notes are secured by a Lien on such property, assets or proceeds
that is  senior in  priority  to, or  equally  and  ratably  secured  with,  the
obligation or liability secured by such Lien.

SECTION 126.  AMENDMENT TO SECTION 1016. Section 1016 of the Indenture is hereby
amended by deleting the existing  Section 1016 in its entirety and  replacing it
with the following:

                  SECTION 1016.  LIMITATIONS ON ISSUANCE OF CERTAIN GUARANTEES
                                 ---------------------------------------------
                                 AND DEBT SECURITIES.
                                 --------------------
                  Neither the Company nor the Parent shall permit any Restricted
Subsidiary  to (i)  directly  or  indirectly  guarantee,  assume or in any other
manner  become  liable  with  respect  to  any  Debt   Securities   ("Guaranteed
Indebtedness")  or (ii) issue any Debt Securities,  unless, in either such case,
such Restricted Subsidiary  simultaneously  executes and delivers a supplemental
indenture  providing for the guarantee (a "Subsidiary  Guarantee") of payment of
the Notes. If the Guaranteed  Indebtedness (A) ranks equally in right of payment
with the Notes,  then the guarantee of such  Guaranteed  Indebtedness  will rank
equally in right of payment with, or be subordinated in right of payment to, the
Subsidiary  Guarantee or (B) is  subordinated  in right of payment to the Notes,
then the guarantee of such Guaranteed Indebtedness will be subordinated in right
of  payment  to the  Subsidiary  Guarantee  at  least  to the  extent  that  the
Guaranteed  Indebtedness is  subordinated in right of payment to the Notes.  The
obligations of each Restricted  Subsidiary under a Subsidiary  Guarantee will be
limited  to the  maximum  amount  as will,  after  giving  effect  to all  other
contingent and fixed  liabilities of such Restricted  Subsidiary,  result in the
obligations of such  Restricted  Subsidiary  under the Subsidiary  Guarantee not
constituting a fraudulent  conveyance or fraudulent  transfer  under  applicable
law.

                  Notwithstanding the foregoing,  any Subsidiary  Guarantee by a
Restricted  Subsidiary  of the Notes shall provide by its terms that it shall be
automatically and  unconditionally  released and discharged upon (i) the sale or
other disposition, by way of merger or otherwise, to any Person not an Affiliate
of the  Parent,  of all  of the  Restricted  Entities'  Capital  Stock  in  such
Restricted  Subsidiary,  (ii) the  merger  or  consolidation  of the  applicable
Restricted   Subsidiary  with  and  into  another  Restricted  Entity  that  has
guaranteed  the  Notes  and  that is the  surviving  Person  in such  merger  or
consolidation  and (iii) the release by all of the holders of Debt Securities of
the  Company  or of  the  Parent  (as  the  case  may  be)  of  such  Restricted
Subsidiary's  obligations under all of its Guarantees in respect thereof and the
release by all of the holders of Debt Securities of such  Restricted  Subsidiary
of its obligations thereunder.

SECTION 127.  AMENDMENT TO SECTION 1017. Section 1017 of the Indenture is hereby
amended by deleting the existing  Section 1017 in its entirety and  replacing it
with the following:

                  SECTION 1017.  LIMITATION ON SALE OF ASSETS.
                                 ----------------------------

(A)LIMITATION ON ASSET SALES BY THE COMPANY AND RESTRICTED COMPANY SUBSIDIARIEs.
   ----------------------------------------------------------------------------

(i)      The  Company  shall not,  and shall not permit any  Restricted  Company
         Subsidiary to, directly or indirectly,  engage in any Asset Sale unless
         (A) the  consideration  received  by the  Company  or  such  Restricted
         Company Subsidiary for such Asset Sale is not less than the Fair Market
         Value of the shares or other assets sold (as determined by the Board of
         Directors of the Company,  whose  determination shall be conclusive and
         evidenced by a resolution  thereof) and (B) the consideration  received
         by the Company or the relevant Restricted Company Subsidiary in respect
         of such Asset Sale  consists of at least 75% cash or Cash  Equivalents;
         PROVIDED,  that for purposes of this Section 1017(a) "Cash Equivalents"
         shall include (X) the amount of any liabilities (other than liabilities
         that are by their  terms  subordinated  to the Notes) of the Company or
         such Restricted  Company  Subsidiary (as shown on the Company's or such
         Restricted  Company  Subsidiary's  most recent  balance sheet or in the
         notes thereto) that are assumed by the transferee of any such assets or
         other  property in such Asset Sale or are no longer a liability  of the
         Company  or  any  Restricted  Company  Subsidiary  (and  excluding  any
         liabilities  that are incurred in connection with or in anticipation of
         such  Asset  Sale),  but only to the  extent  that such  assumption  is
         effected on a basis  under  which  there is no further  recourse to the
         Company or any of its Restricted  Company  Subsidiaries with respect to
         such  liabilities  and (Y) any securities,  notes or other  obligations
         received by the Company or any such  Restricted  Company  Subsidiary in
         connection  with such Asset Sale that are  converted  by the Company or
         such Restricted Company Subsidiary into cash within 60 days of receipt.

(ii)     If the Company or any Restricted Company Subsidiary engages in an Asset
         Sale,  the Company  may use the Net Cash  Proceeds  thereof,  within 12
         months after such Asset Sale,  to (A)  permanently  repay or prepay the
         Notes or any then  outstanding  Indebtedness  of the Company that ranks
         equally  with  the  Notes or  Indebtedness  of any  Restricted  Company
         Subsidiary or permanently  reduce  (without  making any prepayment) any
         Indebtedness  of the  Company  ranking  equally  with the  Notes or any
         Indebtedness of a Restricted Company Subsidiary or (B) invest (or enter
         into a legally binding agreement to invest) in properties and assets to
         replace  the  properties  and assets that were the subject of the Asset
         Sale  or in  properties  and  assets  that  are or  will be used in the
         Telecommunications  Business  of the  Company or a  Restricted  Company
         Subsidiary,  as the case may be. If any such legally binding  agreement
         to invest such Net Cash Proceeds is  terminated,  then the Company may,
         within 60 days of such  termination  or within 12 months of such  Asset
         Sale,  whichever  is later,  apply or invest such Net Cash  Proceeds as
         provided  in clause  (A) or (B)  (without  regard to the  parenthetical
         contained  in such  clause  (B)  above.  The  amount  of such  Net Cash
         Proceeds  not so  used  as set  forth  above  in  this  paragraph  (ii)
         constitutes "Company Excess Proceeds."

(iii)    When  the  aggregate   amount  of  Company  Excess   Proceeds   exceeds
         $10,000,000  (or  the  equivalent   thereof  in  one  or  more  foreign
         currencies  after  deducting  fees that would be incurred in converting
         such funds to US dollars),  the Company shall, within 15 Business Days,
         make an offer to purchase (a "Company  Excess  Proceeds  Offer"),  on a
         proportional basis, the Notes and Indebtedness  described in the second
         succeeding sentence, in accordance with the procedures set forth below,
         the  maximum  principal  amount of Notes  (expressed  as a multiple  of
         $1,000)  and such other  Indebtedness  that may be  purchased  with the
         Company  Excess  Proceeds.  Any  Company  Excess  Proceeds  Offer shall
         include a pro rata offer under  similar  circumstances  to purchase all
         other  Indebtedness of the Company ranking equally with the Notes which
         Indebtedness  contains  similar  provisions  requiring  the  Company to
         purchase  such  Indebtedness.  The  offer  price as to each  Note  (the
         "Company  Excess  Proceeds  Offer Price") will be payable in cash in an
         amount equal to 100% of the principal amount of such Note, plus accrued
         and unpaid interest,  if any,  thereon to the date of purchase.  To the
         extent that the aggregate  principal  amount of Notes validly  tendered
         and not  withdrawn  by holders  thereof  pursuant  to a Company  Excess
         Proceeds  Offer is less than the Company Excess  Proceeds,  the Company
         may  use  such  deficiency  for  general  corporate  purposes.  If  the
         aggregate  principal amount of Notes validly tendered and not withdrawn
         by holders thereof  pursuant to a Company Excess Proceeds Offer exceeds
         the  Excess  Proceeds,  Notes to be  purchased  will be  selected  on a
         proportional  basis.  Upon completion of such Company Exceeds  Proceeds
         Offer, the amount of Company Excess Proceeds shall be reset to zero.

(B)      LIMITATION ON ASSET SALES BY PARENT AND RESTRICTED PARENT SUBSIDIARIES.
(i)      The  Parent  shall not, and shall not permit any  Restricted  Parent
         Subsidiary to, directly or indirectly,  engage in any Asset Sale unless
         (A) the consideration  received by the Parent or such Restricted Parent
         Subsidiary  for such Asset Sale is not less than the Fair Market  Value
         of the  shares  or other  assets  sold (as  determined  by the Board of
         Directors of the Parent,  whose  determination  shall be conclusive and
         evidenced by a resolution  thereof) and (B) the consideration  received
         by the Parent or the relevant  Restricted  Parent Subsidiary in respect
         of such Asset Sale  consists of at least 75% cash or Cash  Equivalents;
         PROVIDED, that for purposes of this Section 1017(b), "Cash Equivalents"
         shall include (X) the amount of any liabilities (other than liabilities
         that are by their  terms  subordinated  to the  Notes) of the Parent or
         such  Restricted  Parent  Subsidiary  (as shown on the Parent's or such
         Restricted  Parent  Subsidiary's  most recent  balance  sheet or in the
         notes thereto) that are assumed by the transferee of any such assets or
         other  property in such Asset Sale or are no longer a liability  of the
         Parent  or  any  Restricted   Parent   Subsidiary  (and  excluding  any
         liabilities  that are incurred in connection with or in anticipation of
         such  Asset  Sale),  but only to the  extent  that such  assumption  is
         effected on a basis  under  which  there is no further  recourse to the
         Parent or any of the  Restricted  Parent  Subsidiaries  with respect to
         such  liabilities  and (Y) and securities,  notes or other  obligations
         received by the Parent or any of its Restricted Parent  Subsidiaries in
         connection  with such  Asset Sale that are  converted  by the Parent or
         such Restricted Parent Subsidiary into cash within 60 days of receipt.

(ii)     If the Parent or any Restricted Parent  Subsidiary  engages in an Asset
         Sale,  the  Parent  may use the Net Cash  Proceeds  thereof,  within 12
         months after such Asset Sale,  to (A) commence an offer to purchase the
         Notes or any then  outstanding  Indebtedness  of the Parent  that ranks
         equally  with  the  Notes  or  Indebtedness  of any  Restricted  Parent
         Subsidiary or permanently  reduce  (without  making any prepayment) any
         Indebtedness  of the Parent  ranking  equally with the Guarantee or any
         Indebtedness of a Restricted Parent  Subsidiary,  (B) cause the Company
         to repay or prepay the Notes or any then  outstanding  Indebtedness  of
         the Company that ranks  equally with the Notes or  Indebtedness  of any
         Restricted Company Subsidiary or permanently reduce (without making any
         prepayment)  any  Indebtedness  of the Company ranking equally with the
         Notes or  Indebtedness  of any Restricted  Company  Subsidiary,  or (C)
         invest  (or enter  into a  legally  binding  agreement  to  invest)  in
         properties  and assets to replace the  properties  and assets that were
         the subject of the Asset Sale or in  properties  and assets that are or
         will be used in the  Telecommunications  Business.  If any such legally
         binding agreement to invest such Net Cash Proceeds is terminated,  then
         the Parent may, within 60 days of such  termination or within 12 months
         of such Asset Sale,  whichever is later,  apply or invest such Net Cash
         Proceeds as provided  in clause (A), or (B) or (C)  (without  regard to
         the  parenthetical  contained in such clause (C)) above.  The amount of
         such Net Cash Proceeds not so used as set forth above in this paragraph
         (c) constitutes "Parent Excess Proceeds."

(iii)    When  the   aggregate   amount  of  Parent  Excess   Proceeds   exceeds
         $10,000,000,  the Parent shall,  within 15 business days, make an offer
         to purchase (a "Parent Proceeds Offer"),  on a proportional  basis, the
         Notes and Indebtedness  described in the second succeeding sentence, in
         accordance with the procedures set forth below,  the maximum  principal
         amount of Notes  (expressed  as a multiple  of  $1,000)  and such other
         Indebtedness that may be purchased with the Parent Excess Proceeds. Any
         Parent  Excess  Proceeds  Offer made by the Parent shall  include a pro
         rata  offer  under   similar   circumstances   to  purchase  all  other
         Indebtedness  of the  Parent  ranking  equally  with  the  Notes  which
         Indebtedness  contains  similar  provisions  requiring  the  Parent  to
         purchase  such  Indebtedness.  The  offer  price as to each  Note  (the
         "Parent  Excess  Proceeds  Offer  Price") will be payable in cash in an
         amount equal to 100% of the principal amount of such Note, plus accrued
         and unpaid interest,  if any,  thereon to the date of purchase.  To the
         extent that the aggregate  principal  amount of Notes validly  tendered
         and not  withdrawn  by holders  thereof  pursuant  to an Parent  Excess
         Proceeds Offer is less than the Parent Excess Proceeds,  the Parent may
         use such deficiency for general  corporate  purposes.  If the aggregate
         principal amount of Notes validly tendered and not withdrawn by holders
         thereof  pursuant to a Parent Excess  Proceeds Offer exceeds the Parent
         Excess  Proceeds,   Notes  to  be  purchased  will  be  selected  on  a
         proportional  basis.  Upon  completion of such Parent  Excess  Proceeds
         Offer, the amount of Excess Proceeds shall be reset to zero.

SECTION 128.  AMENDMENT TO SECTION 1018. Section 1018 of the Indenture is hereby
amended by deleting the existing  Section 1018 in its entirety and  replacing it
with the following:

                  SECTION 1018.  LIMITATIONS ON DIVIDEND RESTRICTIONS.
                                 ------------------------------------

                  Neither the Company nor the Parent  shall,  and neither  shall
they permit any  Restricted  Subsidiary to,  directly or  indirectly,  create or
otherwise  cause or suffer  to exist or  become  effective  any  encumbrance  or
restriction  of  any  kind  on the  ability  of the  Company  or any  Restricted
Subsidiary  to (a) pay  dividends,  in  cash or  otherwise,  or make  any  other
distributions  on or in  respect  of any  Capital  Stock of the  Company or such
Restricted  Subsidiary owned by any Restricted  Entity, (b) pay any Indebtedness
owed to any Restricted  Entity,  (c) make Investments in any Restricted  Entity,
(d)  transfer  any of its  property  or assets to any  Restricted  Entity or (e)
guarantee  any   indebtedness  of  any  Restricted   Entity,   except  for  such
encumbrances or restrictions existing under or by reason of (i) any agreement in
effect on the Issue Date, (ii)  applicable  law, (iii) customary  non-assignment
provisions in leases  entered into in the ordinary  course of business and other
agreements of any Restricted Entity, (iv) any agreement or other instrument of a
Person  acquired by the any  Restricted  Entity in existence at the time of such
acquisition (but not created in  contemplation  thereof),  which  encumbrance or
restriction is not applicable to any Person,  or the properties or assets of any
Person,  other than the Person,  or the  property  or assets of the  Person,  so
acquired,  (v) customary  restrictions on transfers of property contained in any
security agreement (including a capital lease obligation) securing  Indebtedness
of a Restricted Entity otherwise  permitted  hereunder,  (vi) any encumbrance or
restriction with respect to a Restricted Subsidiary entered into for the sale or
disposition of all or  substantially  all of the Capital Stock or assets of such
Restricted  Subsidiary  permitted  under Section  1017),  (vii) any agreement or
instrument  governing  or relating to  Indebtedness  under any senior  financing
facility permitted to be incurred under clause (g), (j) or (m) of the definition
of "Permitted  Indebtedness" if such encumbrance or restriction applies only (A)
to amounts  which at any point in time (other  than  during such  periods as are
described  in the  following  clause (B)) (1) exceed  scheduled  amounts due and
payable  (or which are to become due and  payable  within 30 days) in respect of
the Notes or this Indenture for interest,  premium and principal less the amount
of cash that is  otherwise  available  to the Company or the Parent (as the case
may be) at such time for the payment of interest,  premium and principal due and
payable in respect of the Notes or this  Indenture or (2) if paid,  would result
in an event  described  in the  following  clause (B) of this  sentence,  or (B)
during the pendency of any event that causes,  permits or, after notice or lapse
of time,  would  cause or permit the holder or holders of such  Indebtedness  to
declare such  Indebtedness  to be immediately due and payable or to require cash
collateralization  or cash cover for such  Indebtedness for so long as such cash
collateralization or cash cover has not been provided; (viii) any encumbrance or
restriction   under  the  Vendor  Credit  Facility;   (ix)  any  encumbrance  or
restriction  relating to transfer  of property or assets  comprising  an Initial
System  pursuant  to  an  Incumbent  Agreement,   and  (x)  any  encumbrance  or
restriction  under any agreement  that extends,  renews,  refinances or replaces
agreements  containing the encumbrances or restrictions in the foregoing clauses
(i) through  (vi) and (viii),  so long as the Board of  Directors  of the Parent
determines in good faith that the terms and conditions of any such  encumbrances
or  restrictions,  taken as a whole,  are no less  favorable  to any  Restricted
Entity and the holders of the Notes than those so extended,  renewed, refinanced
or replaced."

                            AMENDMENTS TO "SECURITY"
SECTION 129.      AMENDMENTS TO ARTICLE 12.  Article 12 of the Indenture is
- - ---------------------------------------------
hereby amended by deleting the existing Article 12 in its entirety and replacing
it with the followin  `g:

SECTION 1201.  SECURITY
               --------

         (a) On the date  hereof,  the Company  shall  purchase  the New Pledged
Securities,  and at all  times,  subject  to the  Amended  and  Restated  Pledge
Agreement,  pledge to the  Trustee the Pledged  Securities  as security  for the
benefit of the Holders. The Pledged Securities must be in such amount as will be
sufficient upon receipt of scheduled  interest on and principal payments of such
Pledged  Securities,   in  the  opinion  of  a  nationally  recognized  firm  of
independent public accountants  selected by the Company,  to provide for payment
in  full  of  the  fourth  and  fifth  scheduled  interest  payments  due on the
Outstanding Notes. The Pledged Securities shall be pledged by the Company to the
Trustee  for the benefit of the  Holders  pursuant  to the Amended and  Restated
Pledge  Agreement and shall be held by the Trustee in the Escrow Account pending
disposition pursuant to the Amended and Restated Pledge Agreement.

         (b) Each Holder,  by its continued  acceptance of a Note,  consents and
agrees to the terms of the Pledge Agreement (including,  without limitation, the
provisions  providing for foreclosure and release of the Pledged  Securities) as
the same may be in effect or may be amended from time to time in accordance with
its terms,  and authorizes and directs the Trustee to enter into the Amended and
Restated Pledge Agreement and to perform its respective obligations and exercise
its respective rights thereunder in accordance  therewith.  The Company shall do
or cause to be done all such acts and things as may be  reasonably  necessary or
proper,  or as may be required  by the  provisions  of the Amended and  Restated
Pledge Agreement,  to assure and confirm to the Trustee the security interest in
the Pledged Securities  contemplated  hereby, by the Amended and Restated Pledge
Agreement or any part thereof, as from time to time constituted, so as to render
the same  available  for the security and benefit of this  Indenture  and of the
Notes secured hereby, according to the intent and purposes herein expressed. The
Company shall take, or shall cause to be taken,  any and all actions  reasonably
required  (and any action  reasonably  requested  by the  Trustee)  to cause the
Amended and Restated  Pledge  Agreement to create and maintain,  as security for
the  obligations  of the Company under this  Indenture and the Notes,  valid and
enforceable first priority liens in and on all the Pledged Securities,  in favor
of the  Trustee,  superior  to and prior to the rights of the third  Persons and
subject to no other Liens.

         (c) The release of any Pledged  Securities  pursuant to the Amended and
Restated  Pledge  Agreement will not be deemed to impair the security under this
Indenture in  contravention  of the  provisions  hereof if and to the extent the
Pledged  Securities are released  pursuant to this Indenture and the Amended and
Restated Pledge Agreement. To the extent applicable, the Company shall cause TIA
Section 314(d),  relating to the release of property or securities from the Lien
and security  interest of the Amended and Restated Pledge Agreement and relating
to the  substitution  therefor of any property or  securities to be subjected to
the Lien and security interest of the Amended and Restated Pledge Agreement,  to
be complied with. Any certificate or opinion  required by TIA Section 314(d) may
be made by an officer of the Company,  except in cases where TIA Section  314(d)
requires  that such  certificate  or opinion be made by an  independent  Person,
which Person  shall be an  independent  appraiser  or other  expert  selected or
approved by the Company in the exercise of reasonable care

         (d) The Company shall cause TIA Section 314(b), relating to opinions of
counsel regarding the Lien under the Amended and Restated Pledge  Agreement,  to
be complied  with.  The  Trustee  may,  to the extent  permitted  by Section 602
hereof,   accept  as  conclusive  evidence  of  compliance  with  the  foregoing
provisions the appropriate statements contained in such instruments.

         (e) The Trustee,  in its sole discretion and without the consent of the
Holders,  may,  and at the request of the  Holders of at least 25% in  aggregate
principal amount of Notes then Outstanding shall, on behalf of the Holders, take
all actions it deems necessary or appropriate in order to (i) enforce any of the
terms of the Amended and Restated Pledge  Agreement and (ii) collect and receive
any an  all  amounts  payable  in  respect  of the  obligations  of the  Company
thereunder. The Trustee shall have power to institute and to maintain such suits
and  proceedings  as the Trustee may deem  expedient  to preserve or protect its
interests and the interests of the Holders in the Pledged Securities  (including
power to institute and maintain suits or proceedings to restrain the enforcement
of or compliance with any legislative or other governmental  enactment,  rule or
order that may be  unconstitutional  or otherwise invalid if the enforcement of,
or  compliance  with,  such  enactment,  rule or order would impair the security
interest  hereunder  or be  prejudicial  to the  interest  of the Holders of the
Trustee).


               AMENDMENTS TO "DEFEASANCE AND COVENANT DEFEASANCE"
SECTION 130.  AMENDMENTS  TO ARTICLE 13.  Article 13 of the  Indenture is hereby
amended by deleting  the existing  Article 13 in its  entirety and  replacing it
with the following:

SECTION 1301.  COMPANY'S OPTION TO EFFECT DEFEASANCE OR COVENANT DEFEASANCE.
               -------------------------------------------------------------

                  The  Company  may, at its option by Board  Resolution,  at any
time,  with respect to the Notes,  elect to have either  Section 1302 or Section
1303 be applied to all Outstanding Notes upon compliance with the conditions set
forth below in this Article Thirteen.

SECTION 1302.  DEFEASANCE AND DISCHARGE.
               -------------------------

                  Upon the Company's  exercise  under Section 1301 of the option
applicable  to this  Section  1302,  each of the Company and the Parent shall be
deemed  to have  been  discharged  from  its  obligations  with  respect  to all
Outstanding  Notes on the date the  conditions  set  forth in  Section  1304 are
satisfied (hereinafter,  "defeasance").  For this purpose, such defeasance means
that the  Company  shall  be  deemed  to have  paid and  discharged  the  entire
indebtedness  represented by the Outstanding  Notes,  which shall  thereafter be
deemed to be  "Outstanding"  only for the purposes of Section 1305 and the other
Sections  of  this  Indenture  referred  to in (A) and  (B)  below,  and to have
satisfied all its other  obligations under such Notes and this Indenture insofar
as such Notes are  concerned  (and the  Trustee,  at the expense of the Company,
shall  execute  proper  instruments  acknowledging  the  same),  except  for the
following  which  shall  survive  until   otherwise   terminated  or  discharged
hereunder:  (A) the rights of Holders of  Outstanding  Notes to receive,  solely
from the trust fund  described  in  Section  1304 and as more fully set forth in
such Section,  payments in respect of the principal of (and premium, if any, on)
and interest and  Liquidated  Damages,  if any, on such Notes when such payments
are due, (B) the  Company's  and the Parent's  obligations  with respect to such
Notes under  Sections  304, 305,  306,  1002 and 1003,  (C) the rights,  powers,
trusts,  duties and  immunities  of the Trustee  hereunder  and (D) this Article
Thirteen.  Subject to  compliance  with this Article  Thirteen,  the Company may
exercise its option under this Section 1302  notwithstanding  the prior exercise
of its option  under  Section  1303 with  respect to the Notes.  Forthwith  upon
exercise by the Company of its option  under this  Section  1302 the  Guarantees
shall cease to be of further force and effect.



SECTION 1303.  COVENANT DEFEASANCE.
               --------------------

                  Upon the Company's  exercise  under Section 1301 of the option
applicable  to this Section  1303,  the Company and the Parent shall be released
from their respective obligations under any covenant contained in Section 801(2)
and (3) and Section 803 and in Sections  1007  through  1018 with respect to the
Outstanding  Notes on and after  the date the  conditions  set  forth  below are
satisfied (hereinafter,  "covenant defeasance"),  and the Notes shall thereafter
be deemed not to be  "Outstanding"  for the purposes of any  direction,  waiver,
consent or declaration or Act of Holders (and the  consequences  of any thereof)
in connection with such covenants, but shall continue to be deemed "Outstanding"
for all other purposes  hereunder.  For this purpose,  such covenant  defeasance
means that,  with respect to the Outstanding  Notes,  the Company and the Parent
may omit to comply  with and shall  have no  liability  in  respect of any term,
condition or  limitation  set forth in any such  covenant,  whether  directly or
indirectly,  by reason of any reference elsewhere herein to any such covenant or
by reason of any reference in any such covenant to any other provision herein or
in any other document and such omission to comply shall not constitute a Default
or an Event of Default under Section 501(4), but, except as specified above, the
remainder of this Indenture and such Notes shall be unaffected thereby.

SECTION 1304.  CONDITIONS TO DEFEASANCE OR COVENANT DEFEASANCE.
               ------------------------------------------------

                  The following shall be the conditions to application of either
Section 1302 or Section 1303 to the Outstanding Notes:

                  (1) The Company or the Parent  shall have  deposited or caused
to be deposited  irrevocably with the Trustee (or another trustee satisfying the
requirements  of Section 607 who shall agree to comply  with the  provisions  of
this Article Thirteen  applicable to it) as trust funds in trust for the purpose
of making the  following  payments,  specifically  pledged as security  for, and
dedicated  solely to,  the  benefit of the  Holders of such  Notes,  (A) cash in
United  States  dollars,  (B) U.S.  Government  Obligations  which  through  the
scheduled  payment of principal  and interest in respect  thereof in  accordance
with their terms will provide, not later than one day before the due date of any
payment,  money in an amount, or (C) a combination thereof,  sufficient,  in the
opinion  of a  nationally  recognized  firm of  independent  public  accountants
expressed in a written  certification  thereof delivered to the Trustee,  to pay
and  discharge,  and which shall be applied by the Trustee (or other  qualifying
trustee) to pay and  discharge,  (i) the principal of (and premium,  if any) and
interest and Liquidated  Damages,  if any, on,  Outstanding  Notes on the Stated
Maturity (or Redemption Date, if applicable) of such principal (and premium,  if
any) or  installment of interest and  Liquidated  Damages,  if any, and (ii) any
payments  applicable to the Outstanding  Notes on the day on which such payments
are due and payable in accordance  with the terms of this  Indenture and of such
Notes; provided that the Trustee shall have been irrevocably instructed to apply
such money or the proceeds of such U.S. Government  Obligations to said payments
with  respect to the Notes.  Before such a deposit,  the Company may give to the
Trustee,  in  accordance  with Section 1103 hereof,  a notice of its election to
redeem all of the Outstanding  Notes at a future date in accordance with Article
Eleven hereof,  which notice shall be irrevocable.  Such irrevocable  redemption
notice,  if given,  shall be given  effect in applying the  foregoing.  For this
purpose,  "U.S.  Government  Obligations"  means  securities that are (x) direct
obligations  of the United States of America for the timely payment of which its
full faith and credit is pledged or (y)  obligations  of a Person  controlled or
supervised by and acting as an agency or instrumentality of the United States of
America  the timely  payment of which is  unconditionally  guaranteed  as a full
faith and credit  obligation by the United States of America,  which,  in either
case,  are not callable or redeemable at the option of the issuer  thereof,  and
shall also include a depository  receipt issued by a bank (as defined in Section
3(a)(2) of the Securities Act of 1933, as amended), as custodian with respect to
any such U.S.  Government  Obligation  or a specific  payment of principal of or
interest on any such U.S.  Government  Obligation held by such custodian for the
account of the  holder of such  depository  receipt,  provided  that  (except as
required by law) such custodian is not authorized to make any deduction from the
amount payable to the holder of such depository receipt from any amount received
by the  custodian in respect of the U.S.  Government  Obligation or the specific
payment of principal of or interest on the U.S. Government  Obligation evidenced
by such depository receipt.

                  (2) No Default or Event of Default  with  respect to the Notes
shall have occurred and be continuing on the date of such deposit or, insofar as
paragraphs (6) and (7) of Section 501 hereof are  concerned,  at any time during
the  period  ending on the 123rd  day after the date of such  deposit  (it being
understood  that  this  condition  shall  not  be  deemed  satisfied  until  the
expiration of such period).

                  (3) Such defeasance or covenant defeasance shall not result in
a breach or violation of, or  constitute a default under any material  agreement
or instrument (other than the Indenture) to which the Company or the Parent is a
party or by which it is bound.

(4) In the case of an  election  under  Section  1302,  the  Company  shall have
delivered to the Trustee an Opinion of Counsel  stating that (x) the Company has
received  from, or there has been published by, the Internal  Revenue  Service a
ruling,  or (y) since April 1, 1998,  there has been a change in the  applicable
federal  income tax law, in either case to the effect  that,  and based  thereon
such opinion shall confirm that, the Holders of the  Outstanding  Notes will not
recognize  income,  gain or loss for federal  income tax purposes as a result of
such  defeasance  and will be subject to federal income tax on the same amounts,
in the same  manner  and at the same  times as would  have been the case if such
defeasance had not occurred.

                  (5) In the case of an election under Section 1303, the Company
shall have delivered to the Trustee an Opinion of Counsel to the effect that the
Holders of the  Outstanding  Notes will not recognize  income,  gain or loss for
U.S.  federal  income tax purposes as a result of such covenant  defeasance  and
will be subject to U.S.  federal  income  tax on the same  amounts,  in the same
manner  and at the  same  times  as would  have  been the case if such  covenant
defeasance had not occurred.

                  (6)  The  Company  shall  have  delivered  to the  Trustee  an
Officers'  Certificate  and  an  Opinion  of  Counsel,  each  stating  that  all
conditions  precedent  provided  for  relating  to either the  defeasance  under
Section 1302 or the covenant  defeasance under Section 1303 (as the case may be)
have been complied with.


SECTION 1305.  DEPOSITED MONEY AND U.S. GOVERNMENT OBLIGATIONS TO BE HELD IN
               -------------------------------------------------------------
TRUST; OTHER MISCELLANEOUS PROVISIONS.
- - --------------------------------------

                  Subject to the  provisions  of the last  paragraph  of Section
1003, all money and U.S. Government Obligations (including the proceeds thereof)
deposited  with the  Trustee  (or other  qualifying  trustee,  collectively  for
purposes of this  Section  1305,  the  "Trustee")  pursuant  to Section  1304 in
respect  of the  Outstanding  Notes  shall be held in trust and  applied  by the
Trustee, in accordance with the provisions of such Notes and this Indenture,  to
the payment,  either directly or through any Paying Agent (including the Company
acting as its own Paying Agent) as the Trustee may determine,  to the Holders of
such  Notes of all sums due and to become due  thereon  in respect of  principal
(and premium,  if any) and interest,  but such money need not be segregated from
other funds except to the extent required by law.

                  The Company shall pay and  indemnify  the Trustee  against any
tax, fee or other charge  imposed on or assessed  against the U.S.  Governmental
Obligations  deposited  pursuant to Section 1304 or the  principal  and interest
received in respect  thereof  other than any such tax, fee or other charge which
by law is for the account of the Holders of the Outstanding Notes.

                  Anything   in   this   Article   Thirteen   to  the   contrary
notwithstanding,  the Trustee shall deliver or pay to the or the Parent,  as the
case may be,  from time to time upon  Company  Request  or  Parent  Request,  as
applicable any money or U.S.  Government  Obligations  held by it as provided in
Section  1304  which,  in  the  opinion  of  a  nationally  recognized  firm  of
independent  public  accountants  expressed in a written  certification  thereof
delivered to the Trustee,  are in excess of the amount  thereof which would then
be required  to be  deposited  to effect an  equivalent  defeasance  or covenant
defeasance, as applicable, in accordance with this Article.

SECTION 1306.  REINSTATEMENT.
               --------------

                  If the  Trustee  or any  Paying  Agent is  unable to apply any
money in accordance  with Section 1305 by reason of any order or judgment of any
court or governmental authority enjoining,  restraining or otherwise prohibiting
such  application,  then the Company's and the Parent's  obligations  under this
Indenture and the Notes shall be revived and reinstated as though no deposit had
occurred  pursuant to Section 1302 or 1303,  as the case may be, until such time
as the  Trustee  or  Paying  Agent  is  permitted  to apply  all  such  money in
accordance  with Section  1305;  provided,  however,  that if the Company or the
Parent makes any payment of principal of (or premium, if any) or interest on any
Note following the reinstatement of its obligations,  the Company or the Parent,
as applicable, shall be subrogated to the rights of the Holders of such Notes to
receive such payment from the money held by the Trustee or Paying Agent.


                                PARENT GUARANTEE

SECTION 131.  GUARANTEE.  Parent agrees that  forthwith  upon  execution of this
Supplemental  Indenture  it  will  enter  into  a  guarantee  of  the  Company's
obligations under the Notes in the form attached hereto as Exhibit 1.


                                  MISCELLANEOUS

SECTION 132. WAIVER.  Without  limitation to Section 1019 of the Indenture,  the
Parent may omit in any particular  instance to comply with any term provision or
condition set forth in Section 803 or Sections 1005 through 1018, inclusive,  if
before or after the time for such  compliance the Holders of at least a majority
in aggregate  principal amount of the Outstanding Notes, by Act of such Holders,
waive such  compliance in such  instance with such term,  provision or condition
except to the extent so expressly  waived,  and, until such waivers shall become
effective,  the  obligations  of the  Parent  and the  duties of the  Trustee in
respect of any such term,  provision or condition shall remain in full force and
effect.

SECTION 133.      ACTS OF HOLDERS.
                  ---------------

(a) Any request, demand,  authorization,  direction,  notice, consent, waiver or
other  action  provided by this  Supplemental  Indenture to be given or taken by
Holders  may  be  embodied  in and  evidenced  by one  or  more  instruments  of
substantially  similar  tenor signed by such Holders in person or by agents duly
appointed in writing;  and, except as herein otherwise expressly provided,  such
action shall become  effective when such instrument or instruments are delivered
to the Trustee and, where it is hereby expressly required,  to the Parent and/or
Company.  Such instrument or instruments  (and the action  embodied  therein and
evidenced  thereby) are herein sometimes referred to as the "Act" of the Holders
signing  such  instrument  or  instruments.  Proof  of  execution  of  any  such
instrument or of a writing appointing any such agent shall be sufficient for any
purpose of this  Supplemental  Indenture and conclusive in favor of the Trustee,
the Parent and the Company, if made in the manner provided in this Section.

(b) The fact and date of the  execution by any Person of any such  instrument or
writing may be proved by the  affidavit  of a witness of such  execution or by a
certificate  of a notary  public  or  other  officer  authorized  by law to take
acknowledgements   of  deeds,   certifying  that  the  individual  signing  such
instrument  or writing  acknowledged  to him the execution  thereof.  Where such
execution  is by a  signer  acting  in a  capacity  other  than  his  individual
capacity,  such certificate or affidavit shall also constitute  sufficient proof
of  authority.  The fact and date of the  execution  of any such  instrument  or
writing,  or the authority of the Person  executing the same, may also be proved
in any other manner that the Trustee deems sufficient.

(c) The principal amount and serial numbers of Notes held by any Person, and the
date of holding the same, shall be proved by the Note Register.

(d) If the Parent and/or the Company shall solicit from the Holders of Notes any
request, demand, authorization, direction, notice, consent, waiver or other Act,
the  Company  or the  Parent  (as the  case may be) may,  at its  option,  by or
pursuant  to  a  Board  Resolution,  fix  in  advance  a  record  date  for  the
determination of Holders entitled to give such request,  demand,  authorization,
direction, notice, consent, waiver or other Act, but neither the Company nor the
Parent shall have no obligation to do so.  Notwithstanding  TIA Section  316(c),
such record date shall be the record date specified in or pursuant to such Board
Resolution, which shall be a date not earlier than the date 30 days prior to the
first  solicitation of Holders  generally in connection  therewith and not later
than the date such  solicitation  is completed.  If such a record date is fixed,
such request, demand, authorization, direction, notice, consent, waiver or other
Act may be given  before or after  such  record  date,  but only the  Holders of
record  at the  close of  business  on such  record  date  shall be deemed to be
Holders  for the  purposes  of  determining  whether  Holders  of the  requisite
proportion of Outstanding  Notes have  authorized or agreed or consented to such
request, demand, authorization, direction, notice, consent, waiver or other Act,
and for that purpose the  Outstanding  Notes shall be computed as of such record
date; PROVIDED that no such  authorization,  agreement or consent by the Holders
on such record date shall be deemed  effective  unless it shall become effective
pursuant to the  provisions of this Indenture not later than eleven months after
the record date.

(e) Any request, demand,  authorization,  direction,  notice, consent, waiver or
other Act of the Holder of any Note shall bind every  future  Holder of the same
Note and the Holder of every  Note  issued  upon the  registration  of  transfer
thereof or in exchange  therefor or in lieu thereof in respect of anything done,
omitted or  suffered  to be done by the  Trustee,  the Parent or the  Company in
reliance thereon, whether or not notation of such action is made upon such Note.

SECTION 134.      NOTICE OF HOLDERS; WAIVER.
                  -------------------------

                  Where this Supplemental  Indenture  provides for notice of any
event to Holders by the Parent or the Trustee, such notice shall be sufficiently
given (unless  otherwise  herein  expressly  provided) if in writing and mailed,
first-class  postage  prepaid,  to each Holder  affected  by such event,  at its
address as it appears in the Note Register,  not later than the latest date, and
not earlier than the earliest date, prescribed for the giving of such notice. In
any case where  notice to Holders is given by mail,  neither the failure to mail
such notice,  nor any defect in any notice so mailed,  to any particular  Holder
shall affect the  sufficiency of such notice with respect to other Holders.  Any
notice mailed to a Holder in the manner herein  prescribed shall be conclusively
deemed to have been received by such Holder, whether or not such Holder actually
receives such notice.  Where this  Indenture  provides for notice in any manner,
such  notice may be waived in writing by the  Person  entitled  to receive  such
notice,  either  before  or  after  the  event,  and  such  waiver  shall be the
equivalent of such notice.  Waivers of notice by Holders shall be filed with the
Trustee,  but such filing shall not be a condition  precedent to the validity of
any action taken in reliance upon such waiver.

In case,  by reason of the  suspension  of or  irregularities  in  regular  mail
service  or by reason  of any other  cause,  it shall be  impracticable  to mail
notice of any event to Holders when such notice is required to be given pursuant
to any  provision  of this  Indenture,  then any manner of giving such notice as
shall be satisfactory  to the Trustee shall be deemed to be a sufficient  giving
of such  notice for every  purpose  hereunder.SECTION  135.  COUNTERPARTS.  This
Supplemental Indenture may be signed in any number of counterparts each of which
so  executed  shall be  deemed  to be an  original,  but all  such  counterparts
together constitute but one and the same Supplemental Indenture.

SECTION 136.      GOVERNING LAW. THIS SUPPLEMENTAL INDENTURE SHALL BE GOVERNED
                  -------------
BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT
GIVING EFFECT TO THE CONFLICTS OF LAW PRINCIPLES THEREOF.

SECTION 137.      SEPARABILITY CLAUSE.In case any provision in this Supplemental
                  -------------------
Indenture shall be invalid, illegal or unenforceable, the validity, legality and
enforceability  of the remaining  provisions shall not in any way be affected or
impaired thereby.

SECTION 138.      HEADINGS. The various headings of this Supplemental Indenture
                  --------
are  inserted  for  convenience  only  and  shall  not  affect  the  meaning  or
interpretation  of this  Supplemental  Indenture  or any  provisions  hereof  or
thereof.

SECTION 139.  EFFECT OF SUPPLEMENTAL  INDENTURE.  Pursuant to Section 902 of the
Indenture,  upon the  execution of this  Supplemental  Indenture,  the Indenture
shall be and be deemed to be modified and amended in accordance  therewith  with
respect to the Notes affected thereby, and the respective rights, limitations of
rights,  obligations,  duties and liabilities and immunities under the Indenture
of the Trustee shall thereafter be determined,  exercised and enforced hereunder
subject in all respects to such modifications and amendments,  and all the terms
and conditions of this Supplemental  Indenture shall be and be deemed to be part
of the terms and conditions of the Indenture for any and all purposes.

SECTION  140.  INDENTURE  IN FULL  FORCE AND EFFECT AS  SUPPLEMENTED.  Except as
specifically  stated  herein,  all of the terms and  conditions of the Indenture
shall remain in full force and effect.  All  references  to the Indenture in any
other  document  or  instrument  shall  be  deemed  to mean  the  Indenture,  as
supplemented by this Supplemental  Indenture.  This Supplemental Indenture shall
not  constitute a novation of the Indenture,  but shall  constitute an amendment
thereto.  The parties  hereby agree to be bound by the terms and  obligations of
the Indenture,  as supplemented by this  Supplemental  Indenture,  as though the
terms and obligations of the Indenture were set forth herein.









                           [Intentionally Left Blank]







<PAGE>


                  IN WITNESS  WHEREOF,  the  parties  hereto  have  caused  this
Indenture to be duly executed as of the day and year first above written.



                                PATHNET, INC.



                                By: /s/ William. R. Smedberg V
                                   -----------------------------------------
                                    Name: William R. Smedberg, V
                                     Title: Executive Vice President, Corporate
                                       Development


                                PATHNET TELECOMMUNICATIONS, INC.



                                 By:  /s/ William. R. Smedberg V
                                     -----------------------------------------
                                    Name: William R. Smedberg, V
                                     Title: Executive Vice President, Corporate
                                        Development



                                THE BANK OF NEW YORK, TRUSTEE



                                 By:    /s/ Terence Rawlins
                                      -----------------------------------------
                                     Name:   Terence Rawlins
                                     Title:  Assistant Vice President





                                                                     EXHIBIT 4.6


                      AMENDED AND RESTATED PLEDGE AGREEMENT


                  This  AMENDED AND  RESTATED  PLEDGE  AGREEMENT  (this  "PLEDGE
AGREEMENT")  is made and entered  into as of March 30, 2000 by PATHNET,  INC., a
Delaware  corporation (the "PLEDGOR"),  THE BANK OF NEW YORK, a New York banking
corporation,  having an office at 101 Barclay  Street,  Floor 21 West, New York,
New York 10286,  as trustee  (the  "TRUSTEE")  for the holders from time to time
(the "HOLDERS") of the Notes (as defined herein) issued by the Pledgor under the
Indenture referred to below and THE BANK OF NEW YORK, as securities intermediary
(the "PATHNET SECURITIES INTERMEDIARY").

                               W I T N E S S E T H

                  WHEREAS,  the Pledgor and the Trustee  have  entered into that
certain  indenture  dated as of  April  8,  1998  (the "  ORIGINAL  INDENTURE"),
pursuant to which the Pledgor issued on April 8, 1998  $350,000,000 in aggregate
principal  amount of 12 1/4 % Senior  Notes due 2008 (and  along with such notes
that may from time to time be issued in substitution therefor, the "NOTES"); and

                  WHEREAS,   the  Pledgor  agreed,   pursuant  to  the  Original
Indenture,  to (i)  purchase  or cause the  purchase of Pledged  Securities  (as
defined in the Original  Indenture) in an amount that would be  sufficient  upon
receipt of  scheduled  interest  and  principal  payments in respect  thereof to
provide for the payment of the first four scheduled interest payments due on the
Notes and (ii) place such Pledged  Securities (or cause them to be placed) in an
account maintained by the Trustee with the Pathnet  Securities  Intermediary for
the benefit of Holders of the Notes; and

                  WHEREAS, the Pledgor agreed to purchase United States Treasury
securities in an amount  sufficient,  in the opinion of a nationally  recognized
firm of independent public accountants  selected by the Pledgor and delivered to
the Trustee,  upon receipt of scheduled  interest and principal payments of such
securities,  to provide for payment in full of each of the first four  scheduled
interest  payment  due on the Notes and  interest on the Notes in the event that
the Notes become due and payable prior to such time as the first four  scheduled
interest   payments  thereon  shall  have  been  paid  in  full  (the  "ORIGINAL
OBLIGATIONS"); and

                  WHEREAS,  the Pledgor  agreed to (i) pledge to the Trustee for
its  benefit  and the  ratable  benefit  of the  Holders of the Notes a security
interest in the Pledged  Securities and related  collateral and (ii) execute and
deliver  the  Pledge  Agreement  dated as of April 8,  1998 by and  between  the
Pledgor and the Trustee in order to secure the  payment and  performance  by the
Pledgor of all the Original Obligations (the "Original Pledge Agreement"); and

                  WHEREAS, pursuant to the Original Pledge Agreement the Trustee
opened  an  account  (the  "ESCROW   ACCOUNT")   with  the  Pathnet   Securities
Intermediary,  at its office at 101 Barclay  Street,  New York,  New York 10286,
Account No.  281251,  in the name of The Bank of New York,  as Trustee,  for the
benefit of the  Holders of the 12 1/4% Senior  Notes due 2008 of  Pathnet,  Inc.
(along  with such  notes  that may from  time to time be issued in  substitution
therefor),  with respect to which the Trustee is the sole entitlement holder and
which is under the sole  dominion  and control of the Trustee but subject to the
terms of the Original Pledge Agreement.


                  WHEREAS,  the first three scheduled  interest  payments on the
Notes have been paid in accordance with the terms of the Original Indenture; and


                  WHEREAS,   Pathnet  has  entered  into  a   contribution   and
reorganization  transaction (the "TRANSACTION")  as at the date hereof, as  more
particularly    described   in   the    Registration    Statement   of   Pathnet
Telecommunications,   Inc.,  and  filed  with  the  SEC  with  Registration  No.
333-91469; and

                  WHEREAS,  in  connection  with the  Transaction,  the Original
Indenture  has been  supplemented  by that  Supplemental  Indenture of even date
herewith by and among the  Pledgor,  Pathnet  Telecommunications  Inc.,  and the
Trustee (the "SUPPLEMENTAL INDENTURE"); and

                  WHEREAS,  pursuant to the Supplemental  Indenture  Pathnet has
agreed to (i)  purchase  and  pledge to the  Trustee  additional  United  States
Treasury securities as security for the benefit of the holders of the Notes with
respect to the fifth scheduled  interest  payment on the Notes on the same terms
as the Original Pledge Agreement;  and (ii) execute and deliver this Amended and
Restated  Pledge  Agreement in order to secure the payment in full of the fourth
and fifth scheduled interest payments due on the Notes and interest on the Notes
in the event  that the Notes  become due and  payable  prior to such time as the
fourth and fifth  scheduled  interest  payments  thereon shall have been paid in
full (the "OUTSTANDING OBLIGATIONS").

                  Capitalized terms used herein and not otherwise defined herein
shall have the meanings given to them in the Indenture. References herein to the
"Indenture"  shall be deemed  to be  references  to the  Original  Indenture  as
amended by the Supplemental Indenture unless expressly stated to the contrary.



                  THEREFORE,  in  consideration  of the mutual  promises  herein
contained  and in order to induce  the  Holders  of the Notes to  consent to the
amendments to the Original  Indenture  contained in the Supplemental  Indenture,
the Pledgor  hereby agrees with the Trustee,  for the benefit of the Trustee and
for the ratable benefit of the Holders of the Notes, as follows:

SECTION 1. PLEDGE AND GRANT OF SECURITY INTEREST. As security for the prompt and
complete  payment  and  performance  when  due  of the  Outstanding  Obligations
(whether at the stated maturity or otherwise), the Pledgor hereby pledges to the
Trustee for its benefit and for the ratable benefit of the Holders of the Notes,
and grants to the Trustee  for its  benefit  and for the ratable  benefit of the
Holders of the Notes, a continuing  first priority  security  interest in and to
all of the  Pledgor's  right,  title and interest in, to and under the following
(wherever located),  whether investment  property,  general  intangibles,  other
rights,  interests,  claims and remedies or proceeds or otherwise (collectively,
the "PLEDGED COLLATERAL"):  (a) the United States Treasury securities identified
by  CUSIP  Number  in  Exhibit  A  to  this  Pledge   Agreement   (the  "PLEDGED
SECURITIES"),  (b) any and all applicable  Security  Entitlements to the Pledged
Securities,  (c) the Escrow  Account and all funds,  certificates,  instruments,
assets and properties, if any, from time to time carried therein or representing
or  evidencing  the Escrow  Account  (d) any and all  related  accounts in which
Security Entitlements to the Pledged Securities are carried and (e) all proceeds
of any  and  all of  the  Pledged  Collateral  (including,  without  limitation,
proceeds that constitute property of the types described in clauses (a) - (d) of
this Section 1).

SECTION 2.        SECURITY FOR OUTSTANDING OBLIGATION.  This Pledge Agreement
                  -----------------------------------
secures the prompt and  completepayment  and  performance  when due  (whether at
stated   maturity,   by  acceleration  or  otherwise)  of  all  the  Outstanding
Obligations.

SECTION  3. DELIVERY OF NEW PLEDGED SECURITIES;  ESCROW ACCOUNT;  INTEREST.  (a)
         The Pledged  Securities  shall, if and to the extent that they have not
         previously been pledged and transferred to the Trustee  pursuant to the
         Original Pledge Agreement (such unpledged and untransferred  securities
         being hereinafter  referred to as the "NEW PLEDGED  SECURITIES" and the
         Pledged  Collateral,  in so  far  as it  relates  to  the  New  Pledged
         Securities  being  referred  to as the  "NEW  PLEDGED  COLLATERAL")  be
         pledged and transferred to the Trustee and the Trustee shall become the
         holder of a Security  Entitlement to the New Pledged Securities through
         action by the Pathnet Securities Intermediary, as confirmed (in writing
         or  electronically  or otherwise in accordance  with standard  industry
         practice)  to the Trustee by the Pathnet  Securities  Intermediary  (i)
         indicating  by  book-entry  that  the New  Pledged  Securities  and all
         Security Entitlements thereto have been credited to the Escrow Account,
         or (ii) acquiring the New Pledged Securities or a Security  Entitlement
         thereto for the Trustee and accepting the same for credit to the Escrow
         Account.

(b)      The Trustee has pursuant to the Original Pledge Agreement,  established
         with the  Pathnet  Securities  Intermediary  the Escrow  Account on the
         books of the Pathnet  Securities  Intermediary as a Securities  Account
         segregated from all other custodial or collateral accounts, such Escrow
         Account  to be  maintained  at the  offices of the  Pathnet  Securities
         Intermediary at 101 Barclay  Street,  Floor 21 West, New York, New York
         10286,  and the Pathnet  Securities  Intermediary  has  established and
         maintained a Securities Account at the Federal Reserve Bank of New York
         ("FRBNY").  Upon transfer of the New Pledged  Securities to the Pathnet
         Securities  Intermediary  (or  the  Pathnet  Securities  Intermediary's
         acquisition of the Security Entitlements  thereto), as confirmed to the
         Pathnet   Securities   Intermediary  by  FRBNY  or  another  securities
         intermediary,   the   Pathnet   Securities   Intermediary   shall  make
         appropriate  book entries  indicating  that the New Pledged  Securities
         and/or such Security  Entitlement have been credited to the Trustee and
         the Escrow Account and that all of the Pledged Securities are therefore
         credited to the Trustee  and the Escrow  Account.  Subject to the other
         terms  and  conditions  of this  Pledge  Agreement,  all funds or other
         property held by the Trustee  pursuant to this Pledge Agreement and the
         Original  Pledge  Agreement shall be held in the Escrow Account subject
         (except as expressly  provided in Section 4(a),  (b) and (c) hereof) to
         the  exclusive  dominion  and control  (including  "control" as defined
         inss.9-115(l)(e)  of the UCC) of the  Trustee and  exclusively  for the
         benefit of the Trustee  and for the  ratable  benefit of the Holders of
         the  Notes  and  segregated  from all  other  funds  or other  property
         otherwise held by the Trustee.

(c)      The Trustee shall,  in accordance  with all applicable  laws, have sole
         dominion  and  control  (including  "control"  as  defined  in UCC  ss.
         9-115(l)(e))  over  the  Escrow  Account,  and it  shall  be a term and
         condition of the Escrow Account and the Pledgor  irrevocably  instructs
         the  Trustee,  notwithstanding  any  other  term  or  condition  to the
         contrary in any other  agreement,  that no Pledged  Collateral shall be
         released to or for the account of, or  withdrawn  by or for the account
         of, the Pledgor or any other  Person  except as  expressly  provided in
         this Pledge Agreement.

(d)      The Trustee  shall,  in accordance  with and subject to all  applicable
         laws,  be the sole  entitlement  holder  of, and have the sole power to
         originate  "ENTITLEMENT ORDERS" (as defined in UCCss.8-102(a)(8))  with
         respect  to,  the  Escrow  Account  and  all  United  States   Treasury
         securities  held  therein,  and it shall be a term and condition of the
         Escrow  Account  that the  Trustee  shall  have the right to issue such
         Entitlement  Orders with  respect to the Escrow  Account and all assets
         and  properties  from  time  to time  carried  in the  Escrow  Account,
         including such securities,  Security  Entitlements and other "FINANCIAL
         ASSETS" (as defined in  UCCss.8-102(a)(9))  without  further consent of
         the Pledgor or any other Person  (except,  to the extent required under
         the Indenture, of the Holders), and that no Pledged Collateral shall be
         released to or for the account of, or  withdrawn  by or for the account
         of, the Pledgor or any other  Person  except as  expressly  provided in
         this Pledge Agreement.

(e)      All Pledged  Collateral shall be retained in the Escrow Account pending
         disbursement pursuant to the terms hereof.

(f)      Concurrently  with the execution and delivery of this Pledge  Agreement
         the Trustee and the Pathnet  Securities  Intermediary are delivering to
         the  Pledgor  a duly  executed  certificate,  in the form of  Exhibit A
         hereto, of an officer of the Trustee,  confirming the Trustee's receipt
         and holding of the Pledged Securities or a Security Entitlement thereto
         and  the   crediting  of  the  Pledged   Securities  or  such  Security
         Entitlement to the Escrow  Account,  all in accordance with this Pledge
         Agreement.

(g)      Concurrently  with the execution and delivery of this Pledge Agreement,
         the  Pledgor  shall  deliver to the Trustee  acknowledgement  copies or
         stamped receipt copies of proper financing statements, duly filed under
         the UCC of the State of New York,  covering the New Pledged  Collateral
         described in this Pledge Agreement.

(h)      Concurrently  with the execution and delivery of this Pledge Agreement,
         the Pledgor  shall  deliver to the  Trustee an opinion of a  nationally
         recognized  firm of  independent  public  accountants,  selected by the
         Pledgor, substantially in the form of Exhibit B hereto.

SECTION 4.        DISBURSEMENTS.
                  -------------

                  (a) At least three Business Days prior to the due date of each
         of the fourth or the fifth  scheduled  interest  payments on the Notes,
         the Pledgor may, pursuant to written  instructions given by the Pledgor
         to the Trustee (a "COMPANY ORDER"),  direct the Trustee to release from
         the Escrow Account and pay to the Holders of the Notes on behalf of the
         Issuer  proceeds  sufficient  to  provide  for  payment in full of such
         interest then due on the Notes.  Upon receipt of a Company  Order,  the
         Trustee  will take any action  necessary  to provide for the payment of
         the interest on the Notes in accordance  with the Company Order and the
         payment  provisions  of the  Indenture to the Holders of the Notes from
         (and to the extent of) proceeds of the Pledged Securities in the Escrow
         Account. Nothing in this Section 4 shall affect the Trustee's rights to
         apply the  Pledged  Collateral  to the  payments  of amounts due on the
         Notes upon acceleration thereof.

(b)      If the  Pledgor  makes any  interest  payment or portion of an interest
         payment for which the Pledged  Collateral  is security from a source of
         funds other than the Escrow Account ("OTHER  FUNDS"),  the Pledgor may,
         after  payment in full of such  interest  payment,  direct the  Trustee
         pursuant  to a Company  Order to release  to the  Pledgor or to another
         party  at the  direction  of the  Pledgor  (the  "PLEDGOR'S  DESIGNEE")
         proceeds from the Escrow Account in an amount less than or equal to the
         amount of Other Funds applied to such interest payment. Upon receipt by
         the Trustee of such Company Order and provided the Trustee has received
         such interest payment, if no Default or Event of Default (as defined in
         the Indenture) shall have occurred and be continuing, the Trustee shall
         pay over to the Pledgor or the Pledgor's Designee,  as the case may be,
         the  requested  amount from  proceeds in the Escrow  Account as soon as
         practicable.  Concurrently  with any  release  of funds to the  Pledgor
         pursuant to this Section 4(b), the Pledgor shall deliver to the Trustee
         a  certificate  signed by an officer of the  Pledgor  stating  that the
         Pledgor has made the interest payment from a source of funds other than
         the Escrow  Account,  and that such release has been duly authorized by
         the Pledgor and will not  contravene any provision of applicable law or
         the Certificate of  Incorporation  or the By-laws of the Pledgor or any
         material  agreement  or  other  material  instrument  binding  upon the
         Pledgor or any of its subsidiaries or any judgment,  order or decree of
         any governmental  body,  agency or court having  jurisdiction  over the
         Pledgor  or  any of its  subsidiaries  or  result  in the  creation  or
         imposition  of any Lien on any  assets of the  Pledgor,  except for the
         security interest granted under the Pledge Agreement.

(c)      If at any time the principal of and interest on the Pledged  Securities
         exceeds  100% of the amount  sufficient,  in the  written  opinion of a
         nationally  recognized firm of independent  accountants selected by the
         Pledgor and delivered to the Trustee, to provide for payment in full of
         the remaining fourth and fifth scheduled  interest  payments due on all
         of the outstanding Notes, the Pledgor may direct the Trustee to release
         any such  excess  amount to the Pledgor or to any  Pledgor's  Designee.
         Upon receipt of a Company Order (which shall include a certificate from
         such nationally recognized firm of independent  accountants stating the
         amount by which the Pledged Securities exceed the amount required to be
         held in the Escrow  Account),  if no  Default  or Event of Default  (as
         defined in the Indenture)  shall have occurred and be  continuing,  the
         Trustee shall pay over to the Pledgor or the Pledgor's Designee, as the
         case may be, any such excess amount.

(d)      Upon payment in full of the Outstanding Obligations,  or if the Company
         shall  become  obligated  under  the  Indenture  to  redeem  all of the
         outstanding Notes and such Notes shall have been redeemed,  then, if no
         Default or Event of Default  (as defined in the  Indenture)  shall have
         occurred  and be  continuing,  the  security  interest  in the  Pledged
         Collateral  evidenced  by  this  Pledge  Agreement  will  automatically
         terminate  and be of no  further  force  and  effect  and  the  Pledged
         Collateral  shall promptly be paid over and transferred to the Pledgor.
         Furthermore, upon the release of any Pledged Collateral from the Escrow
         Account in accordance with the terms of this Pledge Agreement,  whether
         upon release of Pledged Collateral to Holders as payment of interest or
         otherwise,  the security interest evidenced by this Pledge Agreement in
         such released Pledged Collateral will automatically terminate and be of
         no further force and effect.

(e)      At  least  three  Business  Days  prior  to the due date of each of the
         fourth and fifth scheduled  interest payments on the Notes, the Pledgor
         shall give the  Trustee  notice (by Company  Order) as to whether  such
         interest  payment will be made pursuant to Section 4(a) or 4(b) and the
         respective  amounts  of  interest  that  will be paid  from the  Escrow
         Account  and from Other  Funds.  Any Other Funds to be used to make any
         interest  payment  shall be delivered to the  Trustee,  in  immediately
         available  funds,  prior to 10:00  a.m.  (New York  City  time) on such
         interest  payment  date. If no such notice is given or such Other Funds
         have not been so  delivered,  the Trustee  will act pursuant to Section
         4(a) as if it had  received a Company  Order  pursuant  thereto for the
         payment in full of the interest then due from the Escrow Account.

(f)      The Trustee shall  liquidate  Pledged  Collateral in the Escrow Account
         (pursuant to written  instructions  from  Pledgor) in order to make any
         scheduled  payment of interest unless there are sufficient funds in the
         Escrow Account on such interest payment date.

(g)      Nothing  contained  in Section 1, Section 3, this Section 4, Section 11
         or any other  provision of this Pledge  Agreement  shall (i) afford the
         Pledgor  any right to issue  Entitlement  Orders  with  respect  to any
         Security  Entitlement  to the  Pledged  Securities  or  any  Securities
         Account  in which any such  Security  Entitlement  may be  carried,  or
         otherwise afford the Pledgor rights to of any such Security Entitlement
         or (ii) except as otherwise specified under this Agreement (or required
         by  applicable  law) give rise to any other  rights of the Pledgor with
         respect to the Pledged Securities,  any Security Entitlement thereto or
         any Securities  Account in which any such Security  Entitlement  may be
         carried  (except as expressly  provided in Sections  4(a),  (b) and (c)
         hereof) of the Trustee in its capacity as such (and not as a securities
         intermediary).

SECTION 5.        REPRESENTATIONS AND WARRANTIES.  The Pledgor hereby represents
                  ------------------------------
 and warrants that, as of the date hereof.

(a)      The  execution and delivery by the Pledgor of, and the  performance  by
         the Pledgor of its obligations  under,  this Pledge  Agreement will not
         contravene   any  provision  of  applicable   law  or  statute  or  the
         organization  documents  of the Pledgor or any  material  agreement  or
         other  material  instrument  binding  upon  the  Pledgor  or any of its
         subsidiaries or any judgment, order or decree of any governmental body,
         agency or court  having  jurisdiction  over the  Pledgor  or any of its
         subsidiaries,  or result in the creation or  imposition  of any Lien on
         any assets of the Pledgor,  except for the security  interests  granted
         under this Pledge  Agreement;  no consent,  approval,  authorization or
         order of, or  qualification  with, or other action by, any governmental
         or regulatory body or agency or any third party is required (i) for the
         execution,  delivery  or  performance  by the  Pledgor  of this  Pledge
         Agreement,  (ii) for the grant by the Pledgor of the security  interest
         granted hereby, for the pledge by the Pledgor of the Pledged Collateral
         pursuant  to  this  Pledge  Agreement,  (iii)  for the  perfection  and
         maintenance  of  the  pledge  and  security   interest  created  hereby
         (including  the  first-priority  nature  of such  pledge  and  security
         interest,  assuming  compliance by the Pathnet Securities  Intermediary
         with all obligations  contained in this Pledge Agreement or (iv) except
         for any such consents, approvals,  authorizations or orders required to
         be obtained by the Trustee (or the Holders) for reasons  other than the
         consummation  of this  transaction,  for the exercise by the Trustee of
         the rights  provided  for in this Pledge  Agreement  or the remedies in
         respect of the Pledged Collateral pursuant to this Pledge Agreement.

(b)      Immediately  before the depositing the New Pledged  Securities into the
         Escrow  Account,  the Pledgor is the legal and beneficial  owner of the
         New  Pledged  Collateral  free and  clear of any Lien or  claims of any
         person or entity (except for the security  interests granted under this
         Pledge Agreement).  No financing  statement or other instrument similar
         in effect covering the Pledgor's  interest in the Pledged Securities is
         on file in any public office, other than any financing statements filed
         pursuant to this Pledge Agreement.

(c)      This Pledge  Agreement has been duly  authorized,  validly executed and
         delivered by the Pledgor and assuming the due authorization,  execution
         and delivery  thereof by the Trustee,  constitutes  a valid and binding
         agreement of the Pledgor, enforceable against the Pledgor in accordance
         with its terms, except as (i) the enforceability  hereof may be limited
         by   bankruptcy,   insolvency,   fraudulent   conveyance,   preference,
         reorganization,  moratorium  or similar laws now or hereafter in effect
         relating to or affecting creditors' rights or remedies generally,  (ii)
         the  availability  of  equitable  remedies  may be limited by equitable
         principles of general  applicability,  (iii) the exculpation provisions
         and rights to indemnification  hereunder may be limited by U.S. federal
         and state securities laws and public policy considerations and (iv) the
         waiver of rights and defenses contained in Section 11(b), Section 15.11
         and Section 15.15 hereof may be limited by applicable law.

(d)      Upon the transfer to the Trustee of the New Pledged  Securities and the
         acquisition  by  the  Trustee  of a  Security  Entitlement  thereto  in
         accordance with Section 3, and the compliance by the Pathnet Securities
         Intermediary with the provisions of this Pledge  Agreement,  the pledge
         of and grant of a security interest in the Pledged Collateral  securing
         the  payment  of the  Outstanding  Obligations  for the  benefit of the
         Trustee  and the  Holders of the Notes will  constitute  a valid  first
         priority  perfected  security  interest  in  such  Pledged  Collateral,
         enforceable  as such  against all  creditors  of the  Pledgor  (and any
         persons  purporting to purchase any of the Pledged  Collateral from the
         Pledgor)  and all filings and actions  (other than the  transfer to the
         Trustee of the Pledged  Securities)  necessary  or desirable to perfect
         and protect such security interest have been duly taken.

(e)      There are no legal or governmental  proceedings pending or, to the best
         of the Pledgor's  knowledge,  threatened to which the Pledgor or any of
         its  subsidiaries  is a party or to which any of the  properties of the
         Pledgor  or any  such  subsidiary  is  subject  that  would  materially
         adversely  affect the power or ability  of the  Pledgor to perform  its
         obligations   under  this  Pledge   Agreement  or  to  consummate   the
         transactions contemplated hereby.

(f)      The pledge of the Pledged Collateral  pursuant to this Pledge Agreement
         is not prohibited by law or governmental regulation (including, without
         limitation,  Regulations G, T, U and X of the Board of Governors of the
         Federal Reserve System) applicable to the Pledgor.

(g)      No Event of Default (as defined herein) exists.

SECTION 6. FURTHER  ASSURANCES.  The Pledgor will,  promptly upon request by the
Trustee,  execute and deliver or cause to be executed and delivered,  or use its
reasonable  best  efforts to procure,  all  assignments,  instruments  and other
documents,  all in form and substance  reasonably  satisfactory  to the Trustee,
execute and deliver any  instruments  to the Trustee and take any other  actions
that are  necessary or desirable,  to perfect,  continue the  perfection  of, or
protect the first  priority  of the  Trustee's  security  interest in and to the
Pledged  Collateral,  to protect  the  Pledged  Collateral  against  the rights,
claims,  or interests of third  persons  (other than any such rights,  claims or
interests  created by or arising through the Trustee),  to enable the Trustee to
enforce its rights and  remedies  hereunder,  or to effect the  purposes of this
Pledge  Agreement.  A photocopy or other  reproduction  of this Agreement or any
financing statement covering the Pledged Collateral or any part thereof shall be
sufficient  as a financing  statement  where  permitted by law. The Pledgor will
promptly  pay all  reasonable  costs  incurred  in  connection  with  any of the
foregoing.  The Pledgor  also agrees to take all actions  that are  necessary to
perfect or continue the  perfection of, or to protect the first priority of, the
Trustee's  security  interest in and to the Pledged  Collateral,  including  the
filing of all necessary  financing and continuation  statements,  and to protect
the Pledged Collateral against the rights,  claims or interests of third persons
(other than any such rights,  claims or interests  created by or arising through
the Trustee).

SECTION 7.        COVENANTS.  The Pledgor covenants and agrees with the Trustee
                  ---------
and the  Holders  of the  Notes  that  from and  after  the date of this  Pledge
Agreement until the payment in full in cash of the Outstanding Obligations:

(a)      that (i) it will  not  (and  will  not  purport  to) sell or  otherwise
         dispose of, or grant any option or warrant  with respect to, any of the
         Pledged Collateral or its beneficial interest therein, and (ii) it will
         not create or permit to exist any Lien or other adverse  interest in or
         with  respect  to  its  beneficial  interest  in  any  of  the  Pledged
         Collateral (except for the security interests granted under this Pledge
         Agreement)  and at all times will be the sole  beneficial  owner of the
         Pledged Collateral; and

(b)      that it will not (i) enter into any  agreement  or  understanding  that
         restricts or inhibits or purports to restrict or inhibit the  Trustee's
         rights  or  remedies  hereunder,  including,  without  limitation,  the
         Trustee's right to sell or otherwise dispose of the Pledged  Collateral
         or (ii) fail to pay or  discharge  any tax,  assessment  or levy of any
         nature  with  respect  to  its  beneficial   interest  in  the  Pledged
         Collateral  not later than five days prior to the date of any  proposed
         sale under any judgment,  writ or warrant of attachment with respect to
         such beneficial interest.

SECTION 8. POWER OF ATTORNEY.  Upon the  occurrence  of an Event of Default,  in
addition to all of the powers granted to the Trustee  pursuant to the Indenture,
the  Pledgor  hereby  appoints  and  constitutes  the  Trustee as the  Pledgor's
attorney-in-fact,  with full authority in the place and stead of the Pledgor and
in the name of the  Pledgor  or  otherwise,  from time to time in the  Trustee's
discretion,  to take any action and to execute any  instrument  that the Trustee
may deem  necessary  or  advisable  to  accomplish  the  purposes of this Pledge
Agreement,  including,  without limitation, the following powers: (a) collection
of proceeds of any Pledged  Collateral;  (b)  conveyance  of any item of Pledged
Collateral to any purchaser  thereof;  (c) giving of any notices or recording of
any Liens under Section 6 hereof;  and (d) paying or discharging  taxes or Liens
levied or placed upon the Pledged  Collateral,  the legality or validity thereof
and the amounts  necessary to discharge the same to be determined by the Trustee
in its sole  reasonable  discretion,  and such  payments  made by the Trustee to
become part of the  Outstanding  Obligations of the Pledgor to the Trustee,  due
and payable  immediately upon demand. The Trustee's authority under this Section
8 shall include, without limitation,  the authority to endorse and negotiate any
checks or instruments representing proceeds of Pledged Collateral in the name of
the Pledgor,  execute and give receipt for any  certificate  of ownership or any
document constituting Pledged Collateral,  transfer title to any item of Pledged
Collateral,  sign the Pledgor's name on all financing  statements (to the extent
permitted  by  applicable  law)  or any  other  documents  deemed  necessary  or
appropriate by the Trustee to preserve, protect or perfect the security interest
in the  Pledged  Collateral  and to file the  same,  prepare,  file and sign the
Pledgor's name on any notice of Lien, and to take any other actions arising from
or incident to the powers granted to the Trustee in this Pledge Agreement.  This
power of attorney is coupled with an interest and is irrevocable by the Pledgor.
Notwithstanding  anything to the contrary stated herein, the Trustee has no duty
or obligation to exercise any of the powers stated in this Section 8.

SECTION 9. NO  ASSUMPTION  OF  DUTIES:  REASONABLE  CARE.  The rights and powers
granted to the Trustee  hereunder  are being  granted in order to  preserve  and
protect the security interest of the Trustee and the Holders of the Notes in and
to the Pledged  Collateral  granted hereby and shall not be interpreted  to, and
shall not impose any duties on the Trustee in  connection  therewith  other than
those  expressly  provided  herein or imposed under  applicable  law.  Except as
provided by applicable law or by the  Indenture,  the Trustee shall be deemed to
have exercised  reasonable  care in the custody and  preservation of the Pledged
Collateral  in its  possession if the Pledged  Collateral is accorded  treatment
substantially  equal to that which the Trustee accords similar  property held by
the Trustee for similar  accounts,  it being  understood that the Trustee in its
capacity  as such  shall not have any  responsibility  for (a)  ascertaining  or
taking action with respect to calls, conversions, exchanges, maturities or other
matters relative to any Pledged Collateral, whether or not the Trustee has or is
deemed to have knowledge of such matters or (b) investing or reinvesting  any of
the Pledged Collateral or any loss on any investment;  PROVIDED,  HOWEVER,  that
nothing  contained  in this Pledge  Agreement  shall  relieve the Trustee of any
responsibilities as a securities intermediary under applicable law.

SECTION 10. INDEMNITY. The Pledgor shall indemnify, hold harmless and defend the
Trustee and its directors,  officers,  agents and employees from and against any
and all  claims,  actions,  obligations,  liabilities  and  expenses,  including
reasonable defense costs, reasonable investigative fees and costs and reasonable
legal fees and expenses and damages  arising from the Trustee's  performance  as
Trustee  under this  Pledge  Agreement,  except to the extent  that such  claim,
action,  obligation,  liability or expense is directly attributable to the gross
negligence or wilful misconduct of such indemnified person.

SECTION 11.  REMEDIES  UPON EVENT OF DEFAULT.  If any Event of Default under the
Indenture (any such Event of Default being referred to in this Pledge  Agreement
as an "EVENT OF DEFAULT") shall have occurred and be continuing:

(a)      The Trustee and the Holders of the Notes shall have, in addition to all
         other rights given by law or by this Pledge Agreement or the Indenture,
         all of the rights and remedies  with respect to the Pledged  Collateral
         of a secured  party under the UCC.  In  addition,  with  respect to any
         Pledged  Collateral that shall then be in or shall thereafter come into
         the possession or custody of the Trustee, the Trustee may sell or cause
         the same to be sold at any broker's board or at public or private sale,
         in one or more sales or lots,  at such  price or prices as the  Trustee
         may deem best,  for cash or on credit or for future  delivery,  without
         assumption  of any credit  risk.  The  purchaser  of any or all Pledged
         Collateral so sold shall thereafter hold the same absolutely, free from
         any claim,  encumbrance or right of any kind  whatsoever  created by or
         through the Pledgor. Unless any of the Pledged Collateral threatens, in
         the reasonable judgment of the Trustee, to decline speedily in value or
         is or becomes of a type sold on a recognized  market,  the Trustee will
         give the Pledgor  reasonable notice of the time and place of any public
         sale  thereof,  or of the time after  which any  private  sale or other
         intended  disposition  is  to be  made.  To  the  extent  permitted  by
         applicable  law,  any  sale  of the  Pledged  Collateral  conducted  in
         conformity with  reasonable  commercial  practices of banks,  insurance
         companies,   commercial   finance   companies,   or   other   financial
         institutions  disposing of property  similar to the Pledged  Collateral
         shall be deemed to be  commercially  reasonable.  Any  requirements  of
         reasonable  notice shall be met if such notice is mailed to the Pledgor
         as provided in Section  15.1 hereof at least 10 days before the time of
         the sale or disposition. The Trustee or any Holder of Notes may, in its
         own  name  or in the  name of a  designee  or  nominee,  buy any of the
         Pledged  Collateral  at any public sale and, if permitted by applicable
         law, at any  private  sale.  All  expenses  (including  court costs and
         reasonable attorneys' fees, expenses and disbursements) of, or incident
         to,  the  enforcement  of  any  of  the  provisions   hereof  shall  be
         recoverable  from the proceeds of the sale or other  disposition of the
         Pledged Collateral.

(b)      The Pledgor  further agrees to use its reasonable best efforts to do or
         cause to be done all such other acts as may be  necessary  to make such
         sale or sales of all or any portion of the Pledged Collateral  pursuant
         to this Section 11 valid and binding and in compliance with any and all
         other applicable requirements of law. The Pledgor further agrees that a
         breach of any of the covenants  contained in this Section 11 will cause
         irreparable  injury to the Trustee  and the Holders of the Notes,  that
         the Trustee and the Holders of the Notes have no adequate remedy at law
         in respect of such breach and,  as a  consequence,  that each and every
         covenant contained in this Section 11 shall be specifically enforceable
         against the Pledgor,  and the Pledgor  hereby  waives and agrees not to
         assert any defenses against an action for specific  performance of such
         covenants except for a defense that no Event of Default has occurred.

(c)      The Trustee may,  without  notice to the Pledgor  except as required by
         law and at any time or from time to time, charge, set-off and otherwise
         apply all or any part of the Outstanding Obligations against the Escrow
         Account or any part thereof.

SECTION 12. EXPENSES. The Pledgor will upon demand pay to the Trustee the amount
of  any  and  all  reasonable  expenses,   including,  without  limitation,  the
reasonable fees,  expenses and disbursements of its counsel,  experts and agents
retained by the Trustee  that the Trustee may incur in  connection  with (a) the
review, negotiation and administration of this Pledge Agreement, (b) the custody
or preservation of, or the sale of,  collection from, or other realization upon,
any of the Pledged  Collateral,  (c) the exercise or  enforcement  of any of the
rights of the Trustee and the Holders of the Notes  hereunder or (d) the failure
by the Pledgor to perform or observe any of the provisions hereof.

SECTION 13.       SECURITY INTEREST ABSOLUTE.  All rights of the Trustee and the
                  --------------------------
Holders of the Notes and security  interests  hereunder,  and all obligations of
the Pledgor hereunder, shall be absolute and unconditional irrespective of:

(a)      any lack of validity or  enforceability  of the  Indenture or any other
         agreement or instrument relating thereto;

(b)      any change in the time,  manner or place of payment of, or in any other
         term  of,  all  or any of the  Outstanding  Obligations,  or any  other
         amendment  or  waiver  of or any  consent  to any  departure  from  the
         Indenture;

(c)      any taking, exchange, surrender, release or non-perfection of any other
         collateral  or any  taking,  release or  amendment  or waiver  from any
         guaranty for all or any of the Outstanding Obligations;

(d)      any change,  restructuring or termination of the corporate structure or
         the existence of the Pledgor or any of its subsidiaries; or

(e)      to the extent permitted by applicable law, any other circumstance which
         might otherwise  constitute a defense  available to, or a discharge of,
         the Pledgor in respect of the Outstanding Obligations or of this Pledge
         Agreement.

SECTION 14. PATHNET SECURITIES  INTERMEDIARY'S  REPRESENTATIONS,  WARRANTIES AND
COVENANTS.  The Pathnet Securities  Intermediary represents and warrants that it
is as of the date  hereof,  and it agrees that for so long as it  maintains  the
Escrow  Account  and acts as  securities  intermediary  pursuant  to this Pledge
Agreement it shall be a "Securities  Intermediary" (as defined in the UCC and in
31 C.F.R.  ss. 357.2) and shall be eligible to maintain,  and does  maintain,  a
Participant's Securities Account (as defined in 31 C.F.R. ss. 357.2) in the name
of  the  Pathnet  Securities  Intermediary  with  the  FRBNY  (a  "FRBNY  Member
Securities  Account").  In furtherance of the foregoing,  the Pathnet Securities
Intermediary hereby:

(a)      represents  and warrants that it is a corporation  that in the ordinary
         course of its business maintains  Securities Accounts for others and is
         acting  in that  capacity  hereunder  and with  respect  to the  Escrow
         Account;

(b)      represents  and warrants that it maintains the FRBNY Member  Securities
         Account with the FRBNY and that the United Stated  Treasury  securities
         constituting  the  Pledged   Securities   transferred  to  the  Pathnet
         Securities  Intermediary pursuant to Section 3(b) have been credited to
         the FRBNY Member Securities Account;

(c)      agrees that the Escrow  Account shall be an account to which  Financial
         Assets  may  be  credited,  and  the  Pathnet  Securities  Intermediary
         undertakes to treat the Trustee as the sole person entitled to exercise
         rights that comprise  (and entitled to the benefits of) such  Financial
         Assets,  and entitled to exercise the rights of an  entitlement  holder
         and control in the manner  contemplated  by the UCC, and further agrees
         to  identify  the  Trustee  in the  records of the  Pathnet  Securities
         Intermediary as the sole person having a Securities Entitlement against
         the Pathnet Securities  Intermediary with respect to the Escrow Account
         and all Financial Assets credited thereto;

(d)      hereby  represents that it has not granted,  and covenants that so long
         as it acts as Pathnet  Securities  Intermediary  hereunder it shall not
         grant,  control (including without limitation,  "control" as defined in
         UCC ss.  9-115(l)(e))  over or with  respect to any Pledged  Collateral
         credited to the Escrow  Account  from time to time to any other  Person
         other than the Trustee;

(e)      covenants  that in its  capacity  as  Pathnet  Securities  Intermediary
         hereunder and with respect to the Escrow Account, it shall not take any
         action  inconsistent  with, and represents and covenants that it is not
         and so long as this Pledge Agreement  remains in effect will not become
         party to any agreement,  the terms of which are  inconsistent  with the
         provisions of this Pledge Agreement;

(f)      agrees, with the other parties to this Pledge Agreement,  that any item
         of  property  credited  to the  Escrow  Account  shall be  treated as a
         Financial Asset;

(g)      agrees, with the other parties to this Pledge Agreement,  so long as it
         serves as  Pathnet  Securities  Intermediary  pursuant  to this  Pledge
         Agreement,  to maintain the Escrow Account as a Securities  Account and
         maintain appropriate books and records in respect thereof in accordance
         with its usual  procedures  and  subject  to the  terms of this  Pledge
         Agreement;

(h)      agrees,  with the other  parties  to this  Pledge  Agreement,  that the
         Pathnet Securities Intermediary's jurisdiction, for purposes of UCC ss.
         8-1  10(e)  and 31  C.F.R.  357.11(b)  as it  pertains  to this  Pledge
         Agreement,  the  Escrow  Account  and  Security  Entitlements  relating
         thereto, shall be the State of New York.

SECTION 15.       MISCELLANEOUS PROVISIONS.
                  ------------------------

Section 15.1.  NOTICES.  Any notice or  communication  given  hereunder shall be
sufficiently  given if in  writing  and  delivered  in person or mailed by first
class mail, commercial courier service or telecopier communication, addressed as
follows:

                  IF TO THE PLEDGOR:
                  -----------------

                           PathNet, Inc.
                           1015 31st Street, N.W.
                           Washington, D.C.  20007
                           Telecopier: (202) 625-7369
                           Attention:  General Counsel

                  WITH A COPY TO:
                  --------------


                           Bruce Wilson, Esq.
                           Covington & Burling
                           1201 Pennsylvania Avenue, N.W.
                           Washington D.C. 20004
                           Telecopier: (202) 662-6291

                  IF TO THE TRUSTEE:
                  -----------------

                           The Bank of New York
                           101 Barclay Street
                           Floor 21 West
                           New York, New York 10286
                           Telecopier: (212) 815-5915
                           Attention: Corporate Trust Administration

Section  15.2.  NO  ADVERSE  INTERPRETATION  OF OTHER  AGREEMENTS.  This  Pledge
Agreement  may  not be  used  to  interpret  another  pledge,  security  or debt
agreement of the Pledgor or any subsidiary thereof. No such pledge,  security or
debt  agreement  (other than the Indenture) may be used to interpret this Pledge
Agreement.

Section  15.3.  SEVERABILITY.  The  provisions  of  this  Pledge  Agreement  are
severable,  and if any clause or  provision  shall be held  invalid,  illegal or
unenforceable in whole or in part in any  jurisdiction,  then such invalidity or
unenforceability   shall  affect  in  that  jurisdiction  only  such  clause  or
provision,  or part  thereof,  and shall not in any manner affect such clause or
provision  in any other  jurisdiction  or any other  clause or provision of this
Pledge Agreement in any jurisdiction.

Section 15.4.     HEADINGS.  The headings in this Pledge Agreement have been
                  --------
inserted for  convenience  of reference  only,  are not to be  considered a part
hereof and shall in no way  modify or  restrict  any of the terms or  provisions
hereof.

Section 15.5.     COUNTERPART ORIGINALS.  This Pledge Agreement may be signed in
                  ---------------------
two or more counterparts,  each of which shall be deemed an original, but all of
which shall together constitute one and the same agreement.

Section 15.6.  BENEFITS OF PLEDGE  AGREEMENT.  Nothing in this Pledge Agreement,
express or implied,  shall give to any person, other than the parties hereto and
their  successors  hereunder,  and the Holders of the Notes,  any benefit or any
legal or equitable right, remedy or claim under this Pledge Agreement.

Section 15.7.  AMENDMENTS,  WAIVERS AND CONSENTS. Any amendment or waiver of any
provision  of this  Pledge  Agreement  and any consent to any  departure  by the
Pledgor from any provision of this Pledge  Agreement  shall be effective only if
made or duly given in  compliance  with all of the terms and  provisions  of the
Indenture,  and neither the Trustee nor any Holder of Notes shall be deemed,  by
any act, delay,  indulgence,  omission or otherwise, to have waived any right or
remedy  hereunder or to have  acquiesced  in any Default or Event of Default (as
defined  herein)  or in any  breach of any of the terms and  conditions  hereof.
Consistent  with the  foregoing,  this  Pledge  Agreement  may be  amended,  its
provisions may be waived and departures  from its provisions may be consented to
by action of the Pledgor and the Trustee, and (if applicable) the Holders of the
Notes, as provided in the Indenture,  and no such  amendment,  waiver or consent
shall require any action or approval by the Initial  Purchasers.  Failure of the
Trustee or any Holder of Notes to exercise,  or delay in exercising,  any right,
power or privilege  hereunder  shall not preclude any other or further  exercise
thereof or the exercise of any other right, power or privilege.  A waiver by the
Trustee  or any  Holder  of Notes of any right or  remedy  hereunder  on any one
occasion shall not be construed as a bar to any right or remedy that the Trustee
or such Holder of Notes would otherwise have on any future occasion.  The rights
and  remedies  herein  provided  are  cumulative,  may be  exercised  singly  or
concurrently and are not exclusive of any rights or remedies provided by law.

Section 15.8.  INTERPRETATION  OF AGREEMENT.  All terms not defined herein or in
the  Indenture  shall have the  meaning set forth in the UCC,  except  where the
context  otherwise  requires.  Acceptance  of or  acquiescence  in a  course  of
performance  rendered  under this  Pledge  Agreement  shall not be  relevant  to
determine  the meaning of this Pledge  Agreement  even though the  accepting  or
acquiescing party had knowledge of the nature of the performance and opportunity
for objection.

Section 15.9.              CONTINUING SECURITY INTEREST, TERMINATION.
                  --------------------------------------------------

(a)      This Pledge  Agreement shall create a continuing  security  interest in
         and to the Pledged  Collateral and shall,  unless otherwise provided in
         this  Pledge  Agreement,  remain  in full  force and  effect  until the
         payment in full in cash of the  Outstanding  Obligations.  This  Pledge
         Agreement  shall  be  binding  upon  the  Pledgor,   its   transferees,
         successors and assigns,  and shall inure,  together with the rights and
         remedies of the Trustee hereunder,  to the benefit of the Trustee,  the
         Holders of the Notes and their respective  successors,  transferees and
         assigns.

(b)      This Pledge  Agreement  (other  than the  Pledgor's  obligations  under
         Sections 10 and 12) shall terminate upon the payment in full in cash of
         the  Outstanding  Obligations or if the Company shall become  obligated
         under the  Indenture  to redeem all of the  outstanding  Notes and such
         Notes shall have been  redeemed,  and if no Default or Event of Default
         (as defined in the Indenture shall have occurred and be continuing.  At
         such time, the Trustee shall, pursuant to a Company Order, reassign and
         redeliver to the Pledgor all of the Pledged  Collateral  hereunder that
         has not been sold,  disposed of,  retained or applied by the Trustee in
         accordance  with the terms of this Pledge  Agreement  and the Indenture
         and take all  actions  that  are  necessary  to  release  the  security
         interest  created  by  this  Pledge  Agreement  in and  to the  Pledged
         Collateral,  including the  execution  and delivery of all  termination
         statements   necessary  to  terminate  any  financing  or  continuation
         statements  filed  with  respect  to  the  Pledged   Collateral.   Such
         reassignment and redelivery shall be without warranty by or recourse to
         the Trustee in its  capacity  as such,  except as to the absence of any
         Liens on the  Pledged  Collateral  created  by or arising  through  the
         Trustee, and shall be at the reasonable expense of the Pledgor.

Section 15.10.  SURVIVAL OF REPRESENTATIONS AND COVENANTS.  All representations,
warranties  and  covenants of the Pledgor  contained  herein  shall  survive the
execution and delivery of this Pledge  Agreement,  and shall terminate only upon
the termination of this Pledge Agreement.

Section 15.11. WAIVERS. The Pledgor waives presentment and demand for payment of
any of the  Outstanding  Obligations,  protest and notice of dishonor or default
with respect to any of the  Outstanding  Obligations,  and all other  notices to
which the Pledgor  might  otherwise be entitled,  except as otherwise  expressly
provided herein or in the Indenture.

Section 15.12.    AUTHORITY OF THE TRUSTEE.
                  ------------------------

(a)      The Trustee shall have the right to exercise all powers  hereunder that
         are specifically  granted to the Trustee by the terms hereof,  together
         with such powers as are  reasonably  incident  hereto.  The Trustee may
         perform any of its duties  hereunder or in connection  with the Pledged
         Collateral  by or through  agents or employees and shall be entitled to
         retain  counsel  and to act in  reliance  upon the  advice  of  counsel
         concerning all such matters.  Except as otherwise expressly provided in
         this Pledge  Agreement  or the  Indenture,  neither the Trustee nor any
         director,  officer, employee, attorney or agent of the Trustee shall be
         liable to the  Pledgor  for any action  taken or omitted to be taken by
         the Trustee, in its capacity as Trustee,  hereunder, except for its own
         gross  negligence or willful  misconduct,  and the Trustee shall not be
         responsible for the validity, effectiveness or sufficiency hereof or of
         any document or security furnished pursuant hereto. The Trustee and its
         directors,  officers, employees,  attorneys and agents may conclusively
         rely on any  communication,  instrument  or document  believed by it or
         them to be genuine  and  correct and to have been signed or sent by the
         proper person or persons.

(b)      The Pledgor  acknowledges that the rights and  responsibilities  of the
         Trustee under this Pledge Agreement with respect to any action taken by
         the  Trustee or the  exercise  or  non-exercise  by the  Trustee of any
         option, right, request,  judgment or other right or remedy provided for
         herein or resulting or arising out of this Pledge  Agreement  shall, as
         between the  Trustee  and the Holders of the Notes,  be governed by the
         Indenture  and by such other  agreements  with  respect  thereto as may
         exist from time to time among them, but, as between the Trustee and the
         Pledgor,  the Trustee  shall be  conclusively  presumed to be acting as
         agent for the Holders of the Notes with full and valid  authority so to
         act or refrain from acting,  and the Pledgor  shall not be obligated or
         entitled to make any inquiry respecting such authority.

(c)      The Trustee  undertakes  to perform such duties and only such duties as
         are  specifically  set forth in this Pledge  Agreement,  and no implied
         covenants  or  obligations  shall be read  into this  Pledge  Agreement
         against the Trustee or the Pathnet Securities Intermediary.

(d)      No provision of this Pledge  Agreement shall require the Trustee or the
         Pathnet  Securities  Intermediary  to  expend  or risk its own funds or
         otherwise  incur any financial  liability in the  performance of any of
         its  duties  hereunder,  or in the  exercise  of any of its  rights and
         powers.

(e)      The Trustee and the Pathnet  Securities  Intermediary  may consult with
         counsel of its  selection and the advice of such counsel or any Opinion
         of Counsel shall be full and complete  authorization  and protection in
         respect of any action  taken,  suffered or omitted by it  hereunder  in
         good faith and in reliance thereon.

(f)      The Trustee and the Pathnet Securities  Intermediary may execute any of
         the trusts or powers  hereunder or perform any duties  hereunder either
         directly or by or through  agents or attorneys  and the Trustee and the
         Pathnet  Securities  Intermediary  shall  not be  responsible  for  any
         misconduct or negligence on the part of any agent or attorney appointed
         with due care by it hereunder.

Section  15.13.  FINAL  EXPRESSION.  This Pledge  Agreement,  together  with the
Indenture and any other agreement executed in connection  herewith,  is intended
by the parties as a final expression of this Pledge Agreement and is intended as
a complete and exclusive statement of the terms and conditions thereof.

Section 15.14. RIGHTS OF HOLDERS OF THE NOTES. No Holder of Notes shall have any
independent  rights  hereunder  other than those  rights  granted to  individual
Holders of the Notes  pursuant to Section 508 of the  Indenture;  PROVIDED  that
nothing in this  subsection  shall limit any rights granted to the Trustee under
the Notes or the Indenture.

Section 15.15.  GOVERNING LAW: SUBMISSION TO JURISDICTION: WAIVER OF JURY TRIAL:
                ----------------------------------------------------------------
 WAIVER OF DAMAGES.
 ------------------

(a)      THIS PLEDGE  AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE
         WITH THE LAWS OF THE STATE OF NEW YORK.  ANY  DISPUTE  ARISING  OUT OF,
         CONNECTED  WITH,   RELATED  TO,  OR  INCIDENTAL  TO,  THE  RELATIONSHIP
         ESTABLISHED  BETWEEN  THE  PLEDGOR,  THE TRUSTEE AND THE HOLDERS OF THE
         NOTES IN CONNECTION  WITH THIS PLEDGE  AGREEMENT AND WHETHER ARISING IN
         CONTRACT, TORT, EQUITY OR OTHERWISE, SHALL BE GOVERNED BY AND CONSTRUED
         IN ACCORDANCE  WITH THE LAWS OF THE STATE OF NEW YORK.  NOTWITHSTANDING
         THE FOREGOING,  THE MATTERS  IDENTIFIED IN 31 C.F.R.  PART 357, 61 FED.
         REG.  43626  (AUG.  23,  1996)  SHALL BE  GOVERNED  SOLELY  BY THE LAWS
         SPECIFIED THEREIN.

(b)      THE PLEDGOR AGREES THAT THE TRUSTEE  SHALL,  IN ITS CAPACITY AS TRUSTEE
         OR IN THE NAME AND ON BEHALF OF ANY HOLDER OF NOTES, HAVE THE RIGHT, TO
         THE EXTENT  PERMITTED BY APPLICABLE LAW, TO PROCEED AGAINST THE PLEDGOR
         OR  THE  PLEDGED  COLLATERAL  IN A  COURT  IN ANY  LOCATION  REASONABLY
         SELECTED IN GOOD FAITH (AND HAVING PERSONAL OR IN REM JURISDICTION OVER
         THE  PLEDGOR OR THE PLEDGED  COLLATERAL,  AS THE CASE MAY BE) TO ENABLE
         THE  TRUSTEE  TO REALIZE ON SUCH  PLEDGED  COLLATERAL,  OR TO ENFORCE A
         JUDGMENT  OR OTHER  COURT ORDER  ENTERED IN FAVOR OF THE  TRUSTEE.  THE
         PLEDGOR AGREES THAT IT WILL NOT ASSERT ANY  COUNTERCLAIMS,  SET OFFS OR
         CROSSCLAIMS IN ANY PROCEEDING BROUGHT BY THE TRUSTEE TO REALIZE ON SUCH
         PROPERTY  OR TO ENFORCE A JUDGMENT OR OTHER COURT ORDER IN FAVOR OF THE
         TRUSTEE, EXCEPT FOR SUCH COUNTERCLAIMS,  SET OFFS OR CROSSCLAIMS WHICH,
         IF NOT ASSERTED IN ANY SUCH PROCEEDING,  COULD NOT OTHERWISE BE BROUGHT
         OR ASSERTED.  THE PLEDGOR  WAIVES ANY OBJECTION THAT IT MAY HAVE TO THE
         LOCATION  OF THE  COURT IN THE CITY OF NEW YORK  ONCE THE  TRUSTEE  HAS
         COMMENCED A PROCEEDING DESCRIBED IN THIS PARAGRAPH  INCLUDING,  WITHOUT
         LIMITATION,  ANY  OBJECTION  TO THE  LAYING  OF  VENUE  OR BASED ON THE
         GROUNDS OF FORUM NON CONVENIENS.

(c)      THE  PLEDGOR  AGREES  THAT  NEITHER  ANY HOLDER OF NOTES NOR (EXCEPT AS
         OTHERWISE  PROVIDED  IN THIS PLEDGE  AGREEMENT  OR THE  INDENTURE)  THE
         TRUSTEE IN ITS  CAPACITY  AS TRUSTEE  SHALL HAVE ANY  LIABILITY  TO THE
         PLEDGOR  (WHETHER  ARISING IN TORT,  CONTRACT OR OTHERWISE)  FOR LOSSES
         SUFFERED BY THE PLEDGOR IN CONNECTION  WITH,  ARISING OUT OF, OR IN ANY
         WAY  RELATED TO, THE  TRANSACTIONS  CONTEMPLATED  AND THE  RELATIONSHIP
         ESTABLISHED  BY THIS PLEDGE  AGREEMENT,  OR ANY ACT,  OMISSION OR EVENT
         OCCURRING IN CONNECTION  THEREWITH,  UNLESS IT IS DETERMINED BY A FINAL
         AND NONAPPEALABLE JUDGMENT OF A COURT THAT IS BINDING ON THE TRUSTEE OR
         SUCH  HOLDER OF NOTES,  AS THE CASE MAY BE,  THAT SUCH  LOSSES WERE THE
         RESULT OF ACTS OR  OMISSIONS ON THE PART OF THE TRUSTEE OR SUCH HOLDERS
         OF NOTES, AS THE CASE MAY BE,  CONSTITUTING BAD FAITH, GROSS NEGLIGENCE
         OR WILLFUL MISCONDUCT.

(d)      TO THE EXTENT  PERMITTED  BY  APPLICABLE  LAW,  THE PLEDGOR  WAIVES THE
         POSTING OF ANY BOND OTHERWISE  REQUIRED OF THE TRUSTEE OR ANY HOLDER OF
         NOTES IN CONNECTION WITH ANY JUDICIAL  PROCESS OR PROCEEDING TO ENFORCE
         ANY JUDGMENT OR OTHER COURT ORDER  PERTAINING TO THIS PLEDGE  AGREEMENT
         OR ANY RELATED AGREEMENT OR DOCUMENT ENTERED IN FAVOR OF THE TRUSTEE OR
         ANY HOLDER OF NOTES, OR TO ENFORCE BY SPECIFIC  PERFORMANCE,  TEMPORARY
         RESTRAINING ORDER OR PRELIMINARY OR PERMANENT  INJUNCTION,  THIS PLEDGE
         AGREEMENT OR ANY RELATED  AGREEMENT OR DOCUMENT  BETWEEN THE PLEDGOR ON
         THE ONE HAND AND THE  TRUSTEE  AND/OR  THE  HOLDERS OF THE NOTES ON THE
         OTHER HAND.











                           [Intentionally Left Blank]



<PAGE>


                  IN WITNESS  WHEREOF,  the Pledgor  and the  Trustee  have each
caused this  Amended and  Restated  Pledge  Agreement  to be duly  executed  and
delivered as of the date first above written.

                           Pledgor:

                           PATHNET, INC.


                           By:     /s/ William. R. Smedberg V
                                   -----------------------------------
                                    Name: William R. Smedberg, V
                                     Title: Executive Vice President, Corporate
                                              Development


                            Trustee:

                            THE BANK OF NEW YORK, Trustee


                            By:     /s/ Terence Rawlins
                                   -----------------------------------
                                     Name:   Terence Rawlins
                                     Title:  Assistant Vice President



                            THE BANK OF NEW YORK,
                              as Pathnet Securities Intermediary


                            By:    /s/ Terence Rawlins
                                   -----------------------------------
                                     Name:   Terence Rawlins
                                     Title:  Assistant Vice President

<PAGE>


                                   CERTIFICATE


                  Pursuant to Section 3(f) of the Pledge  Agreement (the "PLEDGE
AGREEMENT") dated as of March 30, 2000 between Pathnet, Inc. (the "PLEDGOR") and
The Bank of New York,  trustee  (the  "TRUSTEE")  for the holders of the 12 `A %
Senior Notes due 2008 (the "NOTES") of the Pledgor, and The Bank of New York, as
securities intermediary (the "PATHNET SECURITIES INTERMEDIARY"), the undersigned
officer of the Trustee, on behalf of the Trustee, and the undersigned officer of
the  Pathnet  Securities  Intermediary,  on  behalf  of the  Pathnet  Securities
Intermediary,  make the following  certifications to the Pledgor and the Holders
of the  Outstanding  Notes.  Capitalized  terms  used  and not  defined  in this
Certificate have the meanings set forth or referred to in the Pledge Agreement.

1.  The  Trustee  has  previously   established  with  the  Pathnet   Securities
Intermediary,  as  Securities  Intermediary,  the Escrow  Account.  The  Pathnet
Securities Intermediary has acquired a Security Entitlement to the United States
Treasury  securities  identified  in ANNEX 1 to this  Certificate  (the "PLEDGED
SECURITIES")  from the FRBNY and holds a  Security  Entitlement  thereto  in the
FRBNY's  Security  Account.   The  Pathnet  Securities   Intermediary  has  made
appropriate book entries in its records establishing that the Pledged Securities
and the Trustee's  Securities  Entitlement thereto have been credited to and are
held in the Escrow Account.

2. The Trustee has  established  and  maintained  and will  maintain  the Escrow
Account  and all  Securities  Entitlements  and other  positions  carried in the
Escrow  Account  solely in its capacity as Trustee and has not asserted and will
not assert any claim to or interest in the Escrow Account or any such Securities
Entitlements or other positions except in such capacity.

3. The Trustee and the  Pathnet  Securities  Intermediary  have  acquired  their
Security  Entitlements to the Pledged Securities for value and without notice of
any adverse claim thereto. Without limiting the generality of the foregoing, the
Pledged  Securities are not and the Pathnet  Securities  Intermediary's  and the
Trustee's  Security  Entitlements  to the Pledged  Securities  are not, to their
knowledge,  subject  to any  Lien  granted  by  either  of them in  favor of any
Securities  Intermediary  (including,  without  limitation,  NFSC or the  FRBNY)
through  which the  Trustee  derives  its  Security  Entitlement  to the Pledged
Securities.

4.  Neither the Pathnet  Securities  Intermediary  nor the Trustee has caused or
permitted the Pledged Securities or any Security  Entitlement  thereto to become
subject to any Lien created by or arising  through  either of the Trustee or the
Pathnet Securities Intermediary.

                  IN WITNESS  WHEREOF,  the  undersigned  officers have executed
this  Certificate on behalf of The Bank of New York,  Trustee,  and on behalf of
the Pathnet Securities Intermediary, respectively, this 30th day of March, 2000.

                                   THE BANK OF NEW YORK,
                                   Trustee


                                   -----------------------------------
                                   Name:
                                   Title:


                                   THE BANK OF NEW YORK,
                                    As Pathnet Securities
                                        Intermediary


                                   ------------------------------------
                                   Name:
                                   Title:

<PAGE>


                               PLEDGED SECURITIES

<TABLE>
<CAPTION>
   <S>                      <C>              <C>                <C>                      <C>

- - -------------------------- ---------------- ------------------ ---------------------- -----------------------
                                                                ORIGINAL PRINCIPAL
   DESCRIPTION OF DEBT       CUSIP NO(S)     FINAL MATURITY           AMOUNT             COST OF CLOSING
   -------------------       -----------     --------------           ------             ---------------
- - -------------------------- ---------------- ------------------ ---------------------- -----------------------
- - -------------------------- ---------------- ------------------ ---------------------- -----------------------

- - -------------------------- ---------------- ------------------ ---------------------- -----------------------
- - -------------------------- ---------------- ------------------ ---------------------- -----------------------

- - -------------------------- ---------------- ------------------ ---------------------- -----------------------
- - -------------------------- ---------------- ------------------ ---------------------- -----------------------

- - -------------------------- ---------------- ------------------ ---------------------- -----------------------
- - -------------------------- ---------------- ------------------ ---------------------- -----------------------

- - -------------------------- ---------------- ------------------ ---------------------- -----------------------
</TABLE>


<PAGE>



                   INDEPENDENT ACCOUNTANTS' REPORT ON APPLYING
                             AGREED-UPON PROCEDURES

To the Board of Directors
Pathnet, Inc.
Washington, D.C,

We  understand  that  $350,000,000  12 1/4% Senior  Notes due 2008  ("NOTES") of
Pathnet,  Inc. (the "ISSUER"),  were issued on April 8, 1998. We also understand
that in connection with the payment of the fourth and fifth  scheduled  interest
payments  on the  Notes  The  Bank of New York  (the  "Trustee")  will  hold the
Securities  listed on the attached  schedule  (Schedule  11) (the  "Securities")
pursuant  to Section  3(h) of the Pledge  Agreement,  between the Issuer and the
Trustee, dated as of March 30, 2000 (the "Pledge Agreement").

We have been requested by the Issuer and the Trustee (collectively the "Intended
Users")  to prove  the  arithmetic  accuracy  of the  computations  shown on the
attached schedules, prepared by the Issuer.

We have performed the procedures  enumerated below,  which were agreed to by the
Intended Users, solely to assist you and the Trustee with respect to proving the
arithmetic  accuracy of the computations shown on the attached  schedules.  This
agreed upon  procedures  engagement  was performed in accordance  with standards
established  by the  American  Institute or Certified  Public  Accountants.  The
sufficiency  of the  procedures  is solely the  responsibility  of the specified
users of the  report.  Consequently,  we make no  representation  regarding  the
sufficiency of the procedures  described  below either for the purpose for which
this report was  requested  or for any other  purpose.  The  procedures  that we
performed and our findings are, as follows:

1.       We have  proved the  arithmetic  accuracy  of the  computations  of the
         fourth and fifth scheduled interest payments,  as shown on the attached
         Schedule (Schedule I), which was prepared by the Issuer.

2.       We have  proved  the  arithmetic  accuracy  of the  computation  of the
         scheduled  receipts of maturing  principal  and interest to be received
         from the  Securities and cash on deposit as shown on Schedule II, which
         was  prepared  by  the  Issuer.  Other  than  proving  such  arithmetic
         accuracy,  we have not confirmed or otherwise  verified the information
         on that schedule.

3.       We recomputed each amount in the net cash flow column on Schedule II by
         deducting  each amount in the interest  payment column from each amount
         in the total available column, individually and in total.

In  performing  the above  calculations,  we have relied  solely on the data set
forth in the attached  schedules  prepared and provided to us by the Issuer. The
scope of our engagement did not include the verification of any underlying data,
assumptions or definitions necessary to derive the calculations. Such underlying
data,  assumptions  and  definitions  include,  but  are  not  limited  to,  the
following:

(i)      The principal  amounts,  coupon rates,  and related  maturities for the
         Securities and

(ii)     Interest start dates,  maturity dates,  and interest  payment dates for
         the Securities and the Notes.

We were not engaged to, and did not,  perform an  examination,  the objective of
which would be the expression of an opinion on the specified elements, accounts,
or items included in the attached schedules. Accordingly, we do not express such
an opinion.  Had we performed  additional  procedures,  other matters might have
come to our attention that would have been reported to you.

This report is intended  solely for the use of the  Intended  Users listed above
and should not be used by those who have not agreed to the  procedures and taken
responsibility for the sufficiency of the procedures for their purposes.



McLean, Virginia
March 30, 2000

<PAGE>


                                   SCHEDULE I


 Interest Payment DATE ON
    THE NOTES        PRINCIPAL      ANNUAL INTEREST RATE    INTEREST PAYMENT (1)
    ---------        ---------      --------------------    --------------------







(1)      Interest  payments  for each period are  calculated  assuming a 180-day
         semi-annual period and 360-day year.

<PAGE>

<TABLE>

                                                             Coupon Interest      Total Available  Interest Payment  Net Cash Flow
        SECURITY    COUPON RATE   MATURITY DATE    PAR AMOUNT     (1)     CASH FLOW      (2)            (3)               (4)
        --------    -----------   -------------    ----------     ---     ---------      ---            ---               ---
        <S>         <C>           <C>              <C>            <C>     <C>              <C>





- - -----------------------------------------------------------------------------------------------------------------------------------
(1) Coupon interest is calculated assuming a 180-day semi-annual period and a
    360-day year.
(2) Total  Available  for each  period is equal to the Cash Flow for the  period
    plus Net Cash Flow from the previous period.
(3) See SCHEDULE I attached hereto.
(4) Net Cash Flow for each  period is equal to Total  Available  for the  period
    less the Interest Payment for each period.
- - -----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

                                                                     EXHIBIT 4.7


                        PATHNET TELECOMMUNICATIONS, INC.

                                    GUARANTEE

         1.       GUARANTEE OF PAYMENT AND PERFORMANCE OF OBLIGATIONS.
                  ----------------------------------------------------

(a)      For value received, Pathnet Telecommunications,   Inc.  (the  "Parent")
                           unconditionally  guarantees  to  the  holder  of  any
                           Outstanding  Note or Notes (a "Holder")  the full and
                           punctual  payment and  performance of the Obligations
                           (as defined in subsection (b) below).  This Guarantee
                           is  an   absolute,   unconditional   and   continuing
                           guarantee  of  the  full  and  punctual  payment  and
                           performance   by  the   Company   of   each   of  the
                           Obligations,  and not of collectability  only, and is
                           no way  conditioned  upon  any  requirement  that any
                           Holder first  attempt to seek payment or  performance
                           from the Company or any other  guarantor or surety or
                           resort to any  security or other  means of  obtaining
                           payment of all or any of the  Obligations or upon any
                           other contingency. Upon any default by the Company in
                           the full and punctual  payment or  performance of any
                           of the  Obligations,  if such default remains uncured
                           after the giving of any required notice and after any
                           applicable   period  of  cure,  the  liabilities  and
                           obligations  of the  Parent  hereunder  shall  at the
                           option  of any  Holder  become  forthwith  effective,
                           matured,  due and payable  without  further demand or
                           notice of any  nature,  all such  demands and notices
                           being expressly waived by the Parent.

(b)      As used herein, the term "Obligations" means all obligations,covenants,
                           liabilities,  undertakings and agreements of any kind
                           of the Company to all or any of the Holders contained
                           in the  Indenture,  to be  performed  after  the date
                           hereof,  howsoever,  incurred,  arising or evidenced,
                           whether now or hereafter  existing,  due or to become
                           due  or of  payment  or  performance  and  including,
                           without  limitation:  (i) the prompt payment in full,
                           in  United  States  currency,  when due  (whether  at
                           stated  maturity,  by  acceleration,  by mandatory or
                           optional prepayment or otherwise) of the principal of
                           and interest on the Notes (including  interest on any
                           overdue  principal,  and, to the extent  permitted by
                           applicable  law,  on any  overdue  interest)  and all
                           other  amounts from time to time owing by the Company
                           under the  Indenture  and under the Notes  (including
                           costs,  expenses  and  taxes);  and (ii)  the  prompt
                           performance  and  observance  by the  Company  of all
                           covenants,  agreements  and conditions on its part to
                           be performed  and observed  under the  Indenture,  in
                           each  case  strictly  in  accordance  with the  terms
                           thereof (such  payments and other  obligations  being
                           herein    collectively    referred    to    as    the
                           "Obligations").

2.       GUARANTEE CONTINUING AND LIABILITY UNAFFECTED.

(a)      Subject  to  Section  2  (c), this is a continuing guarantee and  shall
                           be  binding  upon the Parent  regardless  of how long
                           before  or  after  the  date  hereof  any part of the
                           Obligations  was  or  is  incurred  by  the  Company.
                           Subject  to  Section  2 (c),  this  Guarantee  may be
                           enforced  by any or all of the  Holders  from time to
                           time and as often as  occasion  for such  enforcement
                           may arise.

(b)      If after  receipt of any  payment  from the Parent made  hereunder  the
                           Holders,  or any of them,  are compelled to surrender
                           or voluntarily  surrender such payment or proceeds to
                           any person  because  such payment or  application  of
                           proceeds   is  or   may  be   avoided,   invalidated,
                           recaptured, or set aside as a preference,  fraudulent
                           conveyance,  impermissible  setoff  or for any  other
                           reason,  whether or not such  surrender is the result
                           of (i) any judgment,  decree or order of any court or
                           administrative  body  having  jurisdiction  over  the
                           Holders,  or (ii) any settlement or compromise by the
                           Holders of any claim as to any of the foregoing  with
                           any  person   (including   the  Company),   then  the
                           Obligations   or  part  thereof   affected  shall  be
                           reinstated and continue and this  Guarantee  shall be
                           reinstated  and  continue  in full  force  as to such
                           Obligations  or part  thereof  as if such  payment or
                           proceeds had not been  received.  The  provisions  of
                           this Section 2(b) shall  survive the  termination  of
                           this Guarantee and any  satisfaction and discharge of
                           the Company by virtue of any payment,  court order or
                           any federal or state law.

(c)       The Parent shall be subrogated to all rights of the Holders in respect
                           of any  amounts  paid by the Parent  pursuant  to the
                           provisions of this Guarantee; provided, however, that
                           Parent  shall be entitled  to enforce,  or to receive
                           any payments arising out of or based upon, such right
                           of subrogation  with respect to any  Obligation  only
                           after the payment of all amounts  owed by the Company
                           to the Holders with respect to all of the Obligations
                           have been paid in full.

(d)       This Guarantee  shall  terminate and be of no further force and effect
                           as to any Note upon full  payment  of the  Redemption
                           Price with respect to such Note,  PROVIDED,  however,
                           that this Guarantee shall continue to be effective or
                           shall be  reinstated,  as the case may be,  if at any
                           time the  Company  must  restore  payment of any sums
                           paid under such Note or under this  Guarantee for any
                           reason whatsoever.

3.       UNCONDITIONAL  NATURE OF  PARENT'S  OBLIGATIONS  AND  LIABILITIES.

         The  obligations  and  liabilities  of the  Parent  hereunder  shall be
         absolute   and   unconditional,   and  shall  not  be  subject  to  any
         counterclaim,  set-off,  deduction or defense  based upon any claim the
         Parent may have against the Company or any other person or entity. Such
         obligations and  liabilities  shall remain in full force and effect for
         the period set forth in  Section 2 above  without  regard to any event,
         circumstance  or  condition  (whether  or not  the  Parent  shall  have
         knowledge  or  notice  thereof)  which but for the  provisions  of this
         Section might constitute a legal or equitable defense or discharge of a
         guarantor  or surety or which might in any way limit  recourse  against
         the Parent, including:

                  (a)      any  amendment or  modification  or supplement to the
                           terms of the Indenture,  this Guarantee or any of the
                           Notes, including the renewal or extension of the time
                           for  payment of the Notes or the  granting of time in
                           respect of the payment thereof;

                  (b)      any  waiver,  consent,  extension,  granting of time,
                           forbearance,  indulgence  or other action or inaction
                           under or in respect of the Indenture or the Notes, or
                           any exercise or non-exercise of any right,  remedy or
                           power in respect thereof;

                  (c)      the  invalidity or  unenforceability,  in whole or in
                           part of the  Indenture  or this  Guarantee  resulting
                           from the  Company's or the Parent's lack of authority
                           to enter  into the  Indenture  and/or to incur any or
                           all of the Obligations,  by any person acting for the
                           Company  or  the  Parent  without  or  in  excess  of
                           authority;

                  (d)      any actual,  purported or attempted sale,  assignment
                           or other  transfer by any or all of the Holders or by
                           the  Company  or the Parent of the  Indenture  or the
                           Notes  or  of  any  of  their  rights,  interests  or
                           obligations thereunder;

                  (e)      the addition of any party as a guarantor or surety of
                           all or any part of the  Obligations or any limitation
                           of the  liability  of  any  additional  guarantor  or
                           surety  of all or any part of the  Obligations  under
                           any other agreement;

                  (f)      any merger or  consolidation of the Company or of the
                           Parent  into or with any other  entity,  or any sale,
                           lease, transfer or other disposition of any or all of
                           any  Company's  or the  Parent's  assets or any sale,
                           transfer  or other  disposition  of any or all of the
                           economic  interests  in the  Company or the Parent to
                           any other person or entity;

                  (g)      the recovery of any  judgment  against the Company or
                           any action to enforce the same; or

                  (h)      any change in the financial  condition of the Company
                           or the  Company's  entry into an  assignment  for the
                           benefit of  creditors,  an  arrangement  or any other
                           agreement or procedure for the  restructuring  of its
                           liabilities, or the Company's insolvency, bankruptcy,
                           reorganization,   dissolution,   liquidation  or  any
                           similar  action by or occurrence  with respect to the
                           Company.

         4.       PARENT'S WAIVER.  The Parent unconditionally waives, to the
                  ---------------
fullest extent permitted by law:

(a)      fullest extent  permitted by law: notice of any of the matters referred
         to in Section 3 hereof;

(b)      diligence,  presentment,  demand of payment and filing of claims with a
         court in the event of bankruptcy or insolvency of the Company;

(c)      any right to the  enforcement,  assertion  or exercise by any or all of
         the Holders of any of their rights,  powers or remedies under,  against
         or with respect to the Company (i) any other  guarantor  or surety,  or
         (ii) any security for all or any part of the Obligations;

(d)      any  requirement  that the Parent be joined as a party in any action or
         proceeding  against the Company to enforce any of the provisions of the
         Indenture;

(e)      acceptance of this Guarantee by any Holder;

and covenants  that this  Guarantee  will not be  discharged  except by complete
performance of the obligations contained in this Guarantee.

         5.       REPRESENTATIONS AND WARRANTIES.  The Parent represents and
                  ------------------------------
warrants that:

(a)                        the  Parent  is  a  corporation  duly  organized  and
                           validly  existing in good standing  under the laws of
                           the  State  of  Delaware  and  has  the  full  power,
                           authority  and legal  right to enter into and perform
                           its obligations under this Guarantee;

(b)                        this Guarantee has been duly authorized, executed and
                           delivered  by the Parent and  constitutes  the legal,
                           valid  and   binding   obligation   of  the   Parent,
                           enforceable against the Parent in accordance with its
                           terms,   except   for  the   effect  of   bankruptcy,
                           insolvency, reorganization,  moratorium, receivership
                           or  similar  laws   affecting  the   enforcement   of
                           creditors' rights generally;

(c)                        the execution, delivery and performance by the Parent
                           of this  Guarantee do not and will not contravene any
                           applicable law, rule,  regulation,  judgment or order
                           and do not and will not contravene the provisions of,
                           constitute a breach of or default under, or result in
                           the  creation  of  any  security  interest,  lien  or
                           encumbrance  on  any of the  property  of the  Parent
                           pursuant to, the Parent's  articles of  incorporation
                           or by-laws  or any  indenture,  mortgage,  license or
                           other contract,  agreement or instrument to which the
                           Parent is a party or by which it is bound.

         6.       ATTORNEY'S  COSTS.  The Parent agrees to pay all  reasonable
                  -----------------
attorney's fees and  disbursements and all other reasonable and actual costs and
expenses  which  may be  incurred  by the  Holders  in the  enforcement  of this
Guarantee.

         7.       SUCCESSORS  AND  ASSIGNS.  This  Guarantee  shall be binding
                  ------------------------
upon the Parent and its respective  successors  and assigns,  and shall inure to
the benefit of and be enforceable by the Holders and their respective successors
and assigns.

         8.       GOVERNING  LAW. This  Guarantee  shall be governed by and
                  --------------
construed in accordance  with the laws of the State of New York.

         9.       SEVERABILITY.  Wherever  possible,  each provision of this
Guarantee  shall be  construed  in such  manner as to be valid  and  enforceable
against the Parent under  applicable  law, but if any provision  hereof shall be
deemed  invalid  or  unenforceable  to any  extent  against  the  Parent  in any
jurisdiction,  such provision  shall be  ineffective  only to the extent of such
invalidity or unenforceability  without invalidating or rendering  unenforceable
the remainder of such provision or any of the other provisions  hereof,  and any
such invalidity or unenforceability against the Parent in one jurisdiction shall
not render such provision ineffective in any other jurisdiction.

         10.      NOTICES.
                  -------

                  Any  notice,   request  or  other  communication  required  or
permitted to be given  hereunder to the Holders  shall be given by the Parent in
the same manner as set forth in Section 106 of the Indenture.

         11.      TRANSFERABILITY.  This  Guarantee is solely for the benefit of
                  ---------------
 the Holders and is not  separately transferable from the Notes.

         12.      HEADINGS.  Section  headings  appearing in this  Guarantee are
                  --------
for  convenience  of  reference  only and shall not  define,  limit,  amplify or
otherwise modify any provision  hereof.  Capitalized  terms used herein have the
meanings given to them in the Indenture.

         This  Guarantee  shall not be valid or  obligatory to any purpose until
the certificate of  authentication  on the Note on which this Guarantee has been
endorsed  shall have been  executed by the Trustee  under the  Indenture  by the
signature of one of its authorized officers.

         IN WITNESS WHEREOF, the Parent has caused this Guarantee to be executed
on its behalf by an officer or other  person  thereunto  duly  authorized  as of
March 30, 2000.

                              PATHNET TELECOMMUNICATIONS, INC.


                            By:  /s/ W.R. Smedberg V
                                 -----------------------------------
                                 William R. Smedberg, V
                                 Executive Vice President, Corporate Development



                                                                    EXHIBIT 4.10


                     WARRANT AGREEMENT AMENDMENT AND WAIVER


                  This AMENDMENT TO WARRANT  AGREEMENT AND WAIVER is dated as of
March 30, 2000 ("AGREEMENT"),  by and between PATHNET,  INC. (the "Company"),  a
Delaware  corporation,  and THE  BANK  OF NEW  YORK,  warrant  agent  (with  any
successor warrant agent, the "WARRANT AGENT").

                  WHEREAS,  the Company  proposes to enter into a reorganization
involving the Company, Pathnet Telecommunications, Inc. ("Pathnet Telecom"), the
existing  shareholders  of Company,  and certain  proposed new  shareholders  of
Pathnet Telecom (the "Reorganization").

                  WHEREAS, in conjunction with the  Reorganization,  the Company
and the  Warrant  Agent  desire to amend the  Warrant  Agreement  (the  "Warrant
Agreement")  dated as April 8, 1998 by and  between  the Company and the Warrant
Agent pursuant to the terms of this Agreement.

                  WHEREAS, in conjunction with the  Reorganization,  the Company
and the  Warrant  Agent  desire  to  waive  certain  provisions  of the  Warrant
Agreement as set out in this Agreement.

                  WHEREAS,  Section 7.01 of the Warrant Agreement  provides that
the Company and the Warrant  Agent may amend the terms of the Warrant  Agreement
and the  Warrants,  and  waivers  to  departures  from the terms of the  Warrant
Agreement and Warrants may be given,  with the consent of the Requisite  Warrant
Holders (as defined in the Warrant Agreement).

                  WHEREAS,  the Requisite  Warrant Holders have consented to the
proposed amendments to and waivers of the Warrant Agreement.

                  NOW, THEREFORE, the parties hereto agree as follows:



                                    ARTICLE I
                                   DEFINITIONS

                  SECTION  1.01.  Capitalized  terms used herein and not defined
herein shall have the meanings ascribed to such terms in the Warrant Agreement.


                                   ARTICLE II
                                   AMENDMENTS

                  SECTION 2.01. Effective as of the date hereof, Section 5.01(d)
of the Warrant  Agreement shall be amended by inserting,  immediately  after the
phrase, "(a "Fundamental Transaction")," in the sixth line, the following words:
"(it  being   understood  that  a  single   transaction  or  series  of  related
transactions  pursuant  to  which  not  less  than  ninety-five  percent  of the
outstanding shares of capital stock of the Company are exchanged for shares in a
single Affiliate (or any Person who, pursuant to such  transaction,  will become
such an  Affiliate)  shall be deemed to be a  Fundamental  Transaction,  and the
Affiliate acquiring such shares shall, for purposes of this clause, be deemed to
be the Surviving Person (as defined below)),".

                  SECTION   2.02.   Subject  to,  and   effective   as  of,  the
consummation  of the  Reorganization,  the date "April 8, 2000" shall be deleted
where it appears in the  definition  of "Exercise  Event" in Section 2.01 of the
Warrant  Agreement,  and from the two places where it appears in Exhibit A (Form
of Warrant  Certificate)  to the Warrant  Agreement and in each place where such
date is deleted the date "April 30, 2001" shall be inserted.

                                   ARTICLE III
                                     WAIVERS


 .........         SECTION  3.01. The Company and the Warrant  Agent hereby waive
the  provisions  of  Section  2.02(a)  of the  Warrant  Agreement  such that the
consummation of the Reorganization  will not be deemed to constitute a Change of
Control nor an Exercise Event for the purposes of the Warrant Agreement.

                                   ARTICLE IV
                                  MISCELLANEOUS

                  SECTION  4.01.   This  Agreement  shall  be  governed  by  and
construed in accordance with the laws of the state of New York.

                  SECTION 4.02.  This Agreement may be executed in any number of
counterparts,  each of which so executed shall be deemed to be an original;  but
such counterparts shall together constitute but one and the same instrument.

                  SECTION  4.03.  A copy of this  Agreement  shall be  available
during  regular  business hours at the principal  corporate  trust office of the
Warrant  Agent,  for  inspection by the holder of any Warrant  Certificate.  The
Warrant  Agent may require  such holder to submit his  Warrant  Certificate  for
inspection by it.

                  SECTION  4.04.  Except as expressly  amended or waived by this
Agreement,  the Warrant Agreement shall continue unchanged and in full force and
effect.




<PAGE>


                  IN WITNESS  WHEREOF,  this Agreement has been duly executed by
the parties hereto as of the day and year first above written.


                               PATHNET, INC.


                               By:/s/ W.R. Smedberg V
                                  ---------------------------------------
                                  Name:
                                  Title:


                               THE BANK OF NEW YORK,
                                  Warrant Agent


                                By: /s/ Terence Rawlins
                                   ---------------------------------------
                                   Name:     Terence Rawlins
                                   Title:    Assistant Vice President


                                                                    EXHIBIT 4.11

                  WARRANT REGISTRATION RIGHTS AGREEMENT WAIVER


                  This WAIVER is dated as of March 30, 2000  ("WAIVER"),  and is
made by PATHNET, INC. (the "Company"), a Delaware corporation,  with the consent
of Spectrum  Equity  Investors,  L.P.,  New  Enterprise  Associates  VI, Limited
Partnership,  Onset  Enterprise  Associates  II, L.P.,  FBR  Technology  Venture
Partners,  L.P., Toronto Dominion Capital (USA) Inc., Grotech Partners IV, L.P.,
Richard A. Jalkut and David Schaeffer (the "Permitted Holders").

                  WHEREAS,  the holders of the warrants  expiring April 15, 2008
(the  "Warrants")  of the  Company  are  entitled  to the  benefits of a Warrant
Registration Rights Agreement (the "Registration  Rights Agreement") dated as of
April 8, 1998  between  the  Company,  the  Permitted  Holders  and the  Initial
Purchasers (as defined therein).

                  WHEREAS,  the Company  proposes to enter into a reorganization
involving the Company, Pathnet Telecommunications, Inc. ("Pathnet Telecom"), the
existing  shareholders  of Company,  and certain  proposed new  shareholders  of
Pathnet Telecom (the "Regoranization").

                  WHEREAS, in conjunction with the  Reorganization,  the Company
desires to waive certain provisions of the Registration Rights Agreement, as set
out in this Waiver.

                  WHEREAS,  Section 6(d) of the  Registration  Rights  Agreement
provides that waivers or consents to departures from the provisions  thereof may
be made with the prior  written  consent  of (i) the  holders of not less than a
majority  of the  outstanding  Warrants,  and  (ii)  with  respect  to  Sections
affecting  the rights or  obligations  of the Permitted  Holders,  the Permitted
Holders who hold not less than a majority of shares of the capital stock held by
the Permitted Holders.

                  WHEREAS, the holders of a majority of the outstanding Warrants
have  consented to the proposed  waiver of the  provisions  of the  Registration
Rights Agreement as set out in this Waiver.

                  WHEREAS,  by  signing  this  Waiver  or any copy  hereof,  the
Permitted  Holders  have  provided  their  written  consent to the waiver of the
provisions of the Registration Rights Agreement as set out in this Waiver.

                                                      WAIVER

                  The Company hereby waives the provisions of Section 3.2 of the
Registration  Rights Agreement such that the consummation of the  Reorganization
shall not be deemed to constitute a Change of Control and shall not give rise to
any  Tag-Along  Right  (as each  such  term in  defined  in  Section  3.2 of the
Registration Rights Agreement).



                                  PATHNET, INC.


                                  By:   /s/ W. R. Smedberg V
                                     ------------------------------------
                                     Name:
                                     Title:


We  hereby  consent  to the  waiver  of the  provisions  of  Section  3.2 of the
Registration Rights Agreement as set out above:

                                  SPECTRUM EQUITY INVESTORS, L.P.,
                                  In its Capacity as a Permitted Holder

                                  By:/s/ Chris J. Maroni
                                  ------------------------------------------
                                     Name:   K. J. Maroni
                                     Title:  illegible

                                  NEW ENTERPRISE ASSOCIATES VI, Limited
                                   Partnership,
                                   In its Capacity as a Permitted Holder

                                  By:   /s/ illegible
                                  ------------------------------------------
                                  Name:
                                  Title:

                                  ONSET ENTERPRISE ASSOCIATES II, L.P.,
                                   In its Capacity as a Permitted Holder
                                  By:

                                  By: /s/ R Kuhling
                                  ------------------------------------------
                                  Name:
                                  Title:  illegible
                                          OEA II Management
                                          The General Partner of
                                          Onset Enterprise Associates II, L.P.,

                                  FBR TECHNOLOGY VENTURE PARTNERS, L.P.,
                                  In its Capacity as a Permitted Holder

                                  By: /s/ illegible
                                  ------------------------------------------
                                  Name:
                                  Title:

                                  TORONTO DOMINION CAPITAL (USA) INC.,
                                  In its Capacity as a Permitted Holder

                                  By: /s/ illegible
                                  ------------------------------------------
                                  Name: Stephen A. Reistedter
                                  Title: Vice President and Director

                                  GROTECH PARTNERS IV, L.P.,
                                  In its Capacity as a Permitted Holder

                                  By: /s/ Patrick J. Kerins
                                  ------------------------------------------
                                  Name:  Patrick J. Kerins
                                  Title:  Managing Director

                                   /s/ Richard A. Jalkut
                                  ------------------------------------------
                                  Richard A. Jalkut


                                  ------------------------------------------
                                  David Schaeffer



                                                                    EXHIBIT 4.12


 ------------------------------------------------------------------------------


                         SUPPLEMENTAL WARRANT AGREEMENT

                           Dated as of March 30, 2000


                                 By and Between

                        PATHNET TELECOMMUNICATIONS, INC.

                                       and

                              The Bank of New York,

                                  Warrant Agent

                              --------------------

                        Warrants to Purchase Common Stock
                            Par Value $0.01 Per Share
      =====================================================================


<PAGE>



                                TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                                                                               PAGE
                                    ARTICLE I

                     ISSUANCE, FORM, EXECUTION, DELIVERY AND
                      REGISTRATION OF WARRANT CERTIFICATES

<S>             <C>                                                                                              <C>

SECTION 1.01.   Issuance of Warrants..............................................................................2
SECTION 1.02.   Form of Warrant Certificates......................................................................2
SECTION 1.03.   Execution of Warrant Certificates.................................................................2
SECTION 1.04.   Authentication and Delivery.......................................................................3
SECTION 1.05.   [Intentionally Omitted]...........................................................................4
SECTION 1.06.   Separation of Warrants and Notes..................................................................4
SECTION 1.07.   Registration......................................................................................4
SECTION 1.08.   Registration of Transfers or Exchanges............................................................4
SECTION 1.09.   Lost, Stolen, Destroyed, Defaced or Mutilated Warrant Certificates................................9
SECTION 1.10.   Offices for Exercise, etc........................................................................10

                                   ARTICLE II

                 DURATION, EXERCISE OF WARRANTS; EXERCISE PRICE
                           AND REPURCHASE OF WARRANTS

SECTION 2.01.   Duration of Warrants.............................................................................10
SECTION 2.02.   Exercise, Exercise Price, Settlement and Delivery................................................10
SECTION 2.03.   Cancellation of Warrant Certificates.............................................................13
SECTION 2.04.   Notice of an Exercise Event......................................................................14

                                   ARTICLE III

                          OTHER PROVISIONS RELATING TO
                          RIGHTS OF HOLDERS OF WARRANTS

SECTION 3.01.   Enforcement of Rights............................................................................14
SECTION 3.02.   Obtaining Stock Exchange Listings................................................................14

                                   ARTICLE IV

                        CERTAIN COVENANTS OF THE COMPANY

SECTION 4.01.   Payment of Taxes.................................................................................14
SECTION 4.02.   Rules 144 and 144A...............................................................................15
SECTION 4.03.   Form of Initial Public Equity Offering...........................................................15
SECTION 4.04.   Securities Act and Applicable State Securities Laws..............................................15
SECTION 4.05.   Resolution of Preemptive Rights, If Any..........................................................15

                                    ARTICLE V

                                   ADJUSTMENTS

SECTION 5.01.   Adjustment of Exercise Rate; Notices.............................................................16
SECTION 5.02.   Fractional Shares................................................................................23
SECTION 5.03.   Certain Distributions............................................................................23

                                   ARTICLE VI

                          CONCERNING THE WARRANT AGENT

SECTION 6.01.   Warrant Agent....................................................................................23
SECTION 6.02.   Conditions of Warrant Agent's Obligations........................................................24
SECTION 6.03.   Resignation and Appointment of Successor.........................................................27

                                   ARTICLE VII

                                  MISCELLANEOUS

SECTION 7.01.   Amendment........................................................................................29
SECTION 7.02.   Notices and Demands to the Company and Warrant Agent.............................................29
SECTION 7.03.   Addresses for Notices to Parties and for Transmission of Documents...............................30
SECTION 7.04.   Notices to Holders...............................................................................30
SECTION 7.05.   Applicable Law...................................................................................30
SECTION 7.06.   Persons Having Rights Under Agreement............................................................30
SECTION 7.07.   Headings.........................................................................................31
SECTION 7.08.   Counterparts.....................................................................................31
SECTION 7.09.   Inspection of Agreement..........................................................................31
SECTION 7.10.   Availability of Equitable Remedies...............................................................31
SECTION 7.11.   Obtaining of Governmental Approvals..............................................................31



EXHIBIT A - Form of Warrant Certificate EXHIBIT B - Form of Legend for Global  Warrant
EXHIBIT C -  Certificate To Be Delivered upon Exchange or Registration of Transfer of Warrants
EXHIBIT D -  Form of Certificate to be Delivered in Connection with Regulation S Transfers

</TABLE>


<PAGE>


                             INDEX OF DEFINED TERMS
<TABLE>
<CAPTION>
<S>                                                                                                           <C>

DEFINED TERM...................................................................................................PAGE
- - ------------                                                                                                   ----

Affiliate........................................................................................................18
Agreement..................................................................................................Preamble
Business Day.....................................................................................................10
Capital Stock....................................................................................................21
Cashless Exercise................................................................................................12
Cashless Exercise Ratio..........................................................................................12
CEO...............................................................................................................3
Common Stock......................................................................................................2
Company....................................................................................................Preamble
Convertible Preferred Stock......................................................................................21
Current Market Value.............................................................................................21
Definitive Warrants...............................................................................................2
Depositary .......................................................................................................2
Distribution.....................................................................................................23
Distribution Rights..............................................................................................23
Election to Exercise.............................................................................................11
Exercisability Date..............................................................................................11
Exercise Date....................................................................................................12
Exercise Event...................................................................................................11
Exercise Price...................................................................................................11
Exercise Rate....................................................................................................11
Expiration Date..................................................................................................10
Fair Market Value................................................................................................22
Fundamental Transaction..........................................................................................19
Global Shares....................................................................................................13
Global Warrants...................................................................................................2
Indenture..................................................................................................Recitals
Independent Financial Expert.....................................................................................22
Initial Public Equity Offering...................................................................................11
Initial Purchasers.........................................................................................Recitals
Notes......................................................................................................Recitals
Officers' Certificate.............................................................................................7
Pathnet....................................................................................................Recitals
Pathnet Warrant............................................................................................Recitals
Pathnet Warrant Agreement..................................................................................Recitals
Pathnet Warrant Registration Rights Agreement..............................................................Recitals
Person...........................................................................................................11
Private Placement Legend..........................................................................................8
Purchase Agreement.........................................................................................Recitals
QIB.............................................................................................................. 5
Registrar.........................................................................................................4

</TABLE>

<PAGE>
<TABLE>
<CAPTION>
<S>                                                                                                        <C>


DEFINED TERM...................................................................................................PAGE
- - ------------                                                                                                   ----

Regulation S......................................................................................................5
Related Parties..................................................................................................24
Reorganization.............................................................................................Recitals
Requisite Warrant Holders........................................................................................29
Resale Restriction Termination Date...............................................................................5
Securities Act....................................................................................................5
Subject Class....................................................................................................15
Surviving Person.................................................................................................19
Time of Determination............................................................................................22
Triggering Date..................................................................................................11
Trustee....................................................................................................Recitals
Units......................................................................................................Recitals
Warrant....................................................................................................Recitals
Warrant Agent..............................................................................................Recitals
Warrant Agent Office.............................................................................................10
Warrant Certificates.......................................................................................Recitals
Warrant Exercise Office..........................................................................................11
Warrant Register..................................................................................................4
Warrant Registration Rights Agreement......................................................................Recitals
Warrant Shares.......................................................................................Recitals and 2

</TABLE>


<PAGE>







                         SUPPLEMENTAL WARRANT AGREEMENT


                  SUPPLEMENTAL  WARRANT  AGREEMENT  dated as of March  30,  2000
("AGREEMENT"), by and between PATHNET TELECOMMUNICATIONS,  INC. (the "COMPANY"),
a  Delaware  corporation,  and THE BANK OF NEW  YORK,  warrant  agent  (with any
successor warrant agent, the "WARRANT AGENT").

                  WHEREAS,  Pathnet,  Inc.  ("PATHNET")  entered into a purchase
agreement (the "PURCHASE  AGREEMENT")  dated April 1, 1998,  with, among others,
Merrill Lynch & Co., in which Pathnet  agreed to sell to the Initial  Purchasers
(as  defined in the  Purchase  Agreement)  an  aggregate  of 350,000  units (the
"UNITS"), each consisting of (i) $1,000 principal amount of 12-1/4% Senior Notes
due 2008 (the  "NOTES") of Pathnet to be issued under an  indenture  dated as of
April 8, 1998, as amended (the "INDENTURE"), between Pathnet and The Bank of New
York,  trustee  (the  "TRUSTEE")  and (ii) one  warrant (a  "PATHNET  WARRANT"),
initially entitling the holder thereof to purchase 1.1 shares of common stock of
Pathnet; and

                  WHEREAS,  the holders of the Pathnet Warrants were entitled to
the  benefits  of a Warrant  Agreement  dated as of April 8, 1998 (the  "PATHNET
WARRANT AGREEMENT")  between Pathnet and the Trustee and a Warrant  Registration
Rights  Agreement dated as of April 8, 1998 (the "PATHNET  WARRANT  REGISTRATION
RIGHTS  AGREEMENT"),  among Pathnet,  the Permitted Holders (as defined therein)
and the Initial Purchasers; and

                  WHEREAS,   in   conjunction   with   a   reorganization   (the
"REORGANIZATION")  involving,  among  others,  the Company,  Pathnet,  three new
investors,  Pathnet's  shareholders and holders of the Notes, Pathnet sought and
received the consent of the  Requisite  Warrant  Holders (as defined  herein) to
certain  amendments  to  the  Pathnet  Warrant  Agreement  and  Pathnet  Warrant
Registration Rights Agreement (as so amended,  the "WARRANT  REGISTRATION RIGHTS
AGREEMENT"); and

                  WHEREAS,   the   Reorganization   constituted   a  Fundamental
Transaction  (as  defined  in  the  Pathnet  Warrant   Agreement,   as  amended)
culminating in the substitution of this  Supplemental  Warrant Agreement in lieu
of the Pathnet  Warrant  Agreement  (which,  as of such  substitution,  shall be
terminated)  and the conversion of each Pathnet Warrant into a warrant issued by
the Company (a  "WARRANT")  which,  as of the date  hereof,  entitles the holder
thereof to purchase 3.19 shares (the "WARRANT  SHARES") of Company  Common Stock
(as  defined  herein),  subject to  adjustments  as  provided  herein and in the
Warrant.  Upon such  conversion,  each of the Pathnet Warrants shall cease to be
outstanding, and any certificate evidencing a Pathnet Warrant shall evidence the
right to secure certificates  evidencing Warrants.  The certificates  evidencing
the Warrants are herein referred to collectively as the "WARRANT  CERTIFICATES";
and

                  WHEREAS,  the Company  desires the Warrant Agent to assist the
Company in connection with the issuance, exchange, cancellation, replacement and
exercise of the Warrants, and in this Agreement wishes to set forth, among other
things, the terms and conditions on which the Warrants may be issued, exchanged,
cancelled, replaced and exercised;

                  NOW, THEREFORE, the parties hereto agree as follows:


<PAGE>


                                    ARTICLE I
                     ISSUANCE, FORM, EXECUTION, DELIVERY AND
                      REGISTRATION OF WARRANT CERTIFICATES

                  SECTION 1.01. ISSUANCE OF WARRANTS.  The Company hereby issues
Warrants to holders of Pathnet Warrants in exchange for such Pathnet Warrants at
the rate of one Warrant for each Pathnet Warrant.

                  Each Warrant Certificate shall evidence the number of Warrants
specified  therein.  Each Warrant  evidenced by a Warrant  Certificate,  when it
becomes  exercisable as provided herein and therein,  shall represent the right,
subject to the  provisions  contained  herein and therein,  to purchase from the
Company  (and the Company  shall  issue and sell to the holder of such  Warrant)
3.19 fully paid,  registered  and  non-assessable  Warrant Shares at an exercise
price of $0.01 per share. The number of Warrant Shares issuable upon exercise of
a Warrant is subject to  adjustment as provided  herein and in the Warrant.  The
number of shares of the Company's  common stock,  par value $0.01 per share, and
any other class or series of common equity equivalent shares of the Company into
which such common stock may be reclassified and sold to the Public in an Initial
Public Equity Offering (the "COMMON STOCK")  issuable upon exercise of a Warrant
is subject to  adjustment  as  provided  herein and in the  Warrant.  Unless the
context  otherwise  requires,  the term "WARRANT  SHARES" shall also include any
other securities or property issuable and deliverable upon exercise of a Warrant
as provided in Article V, subject to  adjustment  as provided  herein and in the
Warrant.

                  From  and  after  the  date  hereof,   any  certificate   that
previously  evidenced a Pathnet Warrant shall evidence only the right to receive
a Warrant  Certificate  evidencing a Warrant and to secure the rights,  benefits
and obligations of such Warrant and of this Warrant Agreement.

                  SECTION  1.02.  FORM  OF  WARRANT  CERTIFICATES.  The  Warrant
Certificates  will  initially  be  issued  either in  global  form (the  "GLOBAL
WARRANTS")  or in  registered  form  as  definitive  Warrant  Certificates  (the
"DEFINITIVE  WARRANTS"),  in either case  substantially in the form of EXHIBIT A
attached hereto.  Any Global Warrants to be delivered pursuant to this Agreement
shall  bear the  legend set forth in  EXHIBIT B  attached  hereto.  Such  Global
Warrants shall represent such of the outstanding  Warrants as shall be specified
therein and each shall provide that it shall  represent the aggregate  amount of
outstanding  Warrants from time to time endorsed  thereon and that the aggregate
amount of  outstanding  Warrants  represented  thereby  may from time to time be
reduced or increased,  as  appropriate.  Any  endorsement of a Global Warrant to
reflect the amount of any  increase  or  decrease  in the amount of  outstanding
Warrants  represented  thereby  shall  be  made  by the  Warrant  Agent  and the
Depositary  (as defined  below) in  accordance  with  instructions  given by the
holder thereof.  The Depository  Trust Company shall act as the depositary (with
any successor depositary,  the "DEPOSITARY") with respect to the Global Warrants
until a successor shall be appointed by the Company and the Warrant Agent. Under
the  circumstances  set forth in Section 1.08  hereof,  a holder of Warrants may
receive  from the  Warrant  Agent or the  Depository  Definitive  Warrants  upon
written request.

                  SECTION 1.03. EXECUTION OF WARRANT  CERTIFICATES.  The Warrant
Certificates  shall be executed on behalf of the Company by the  Chairman of its
Board of Directors,  its Chief Executive  Officer  ("CEO"),  its President,  its
Chief  Financial  Officer or any executive  vice president or vice president and
attested by its Secretary or any Assistant Secretary. Such signatures may be the
manual or facsimile  signatures of the present or any future such officers.  The
seal  of the  Company  may be in the  form  of a  facsimile  thereof  and may be
impressed,   affixed,   imprinted  or  otherwise   reproduced   on  the  Warrant
Certificates.  Typographical  and  other  minor  errors or  defects  in any such
reproduction   of  any  such   signature   shall  not  affect  the  validity  or
enforceability of any Warrant  Certificate that has been duly  countersigned and
delivered by the Warrant Agent.

                  In case any  officer of the  Company who shall have signed any
of the Warrant  Certificates  shall cease to be such officer  before the Warrant
Certificate so signed shall be authenticated  and delivered by the Warrant Agent
or disposed of by the Company,  such  Warrant  Certificate  nevertheless  may be
countersigned  and delivered or disposed of as though the person who signed such
Warrant  Certificate  had not  ceased to be such  officer  of the  Company.  Any
Warrant  Certificate  may be signed on behalf of the Company by such persons as,
at the actual date of the  execution of such Warrant  Certificate,  shall be the
proper  officers  of the  Company,  although  at the date of the  execution  and
delivery of this Agreement any such person was not such an officer.

                  SECTION  1.04.  AUTHENTICATION  AND  DELIVERY.  Subject to the
immediately following paragraph,  Warrant Certificates shall be authenticated by
manual signature and dated the date of  authentication  by the Warrant Agent and
shall not be valid  for any  purpose  unless so  authenticated  and  dated.  The
Warrant  Certificates  shall be numbered and shall be  registered in the Warrant
Register (as defined in Section 1.07 hereof).

                  Upon the  receipt by the Warrant  Agent of a written  order of
the  Company,  which  order  shall be  signed  by the  Chairman  of its Board of
Directors,  its President, its CEO, its Chief Financial Officer or any executive
vice  president or vice president and attested by its Secretary or any Assistant
Secretary, and shall specify the amount of Warrants to be authenticated, whether
the Warrants are to be Global Warrants or Definitive Warrants,  the date of such
Warrants and such other information as the Warrant Agent may reasonably request,
without any further action by the Company, the Warrant Agent is authorized, upon
receipt  from the  Company  at any time  and  from  time to time of the  Warrant
Certificates,  duly executed as provided in Section 1.03 hereof, to authenticate
the Warrant  Certificates  and deliver  them upon the  Company's  request.  Such
authentication  shall be by a duly  authorized  signatory  of the Warrant  Agent
(although it shall not be necessary  for the same  signatory to sign all Warrant
Certificates).

                  In case any  authorized  signatory  of the  Warrant  Agent who
shall have  authenticated any of the Warrant  Certificates  shall cease to be an
authorized  signatory before the Warrant Certificate shall be disposed of by the
Company or the Warrant  Agent,  such  Warrant  Certificate  nevertheless  may be
delivered  or  disposed  of as though the person  who  authenticated  an Warrant
Certificate  had not ceased to be an authorized  signatory of the Warrant Agent.
Any Warrant  Certificate may be  authenticated on behalf of the Warrant Agent by
such  persons  as,  at  the  actual  time  of  authentication  of  such  Warrant
Certificates,  shall be the duly  authorized  signatories  of the Warrant Agent,
although at the time of the  execution  and delivery of this  Agreement any such
person is not an authorized signatory.

                  The Warrant Agent's authentication on all Warrant Certificates
shall be in substantially the form set forth in EXHIBIT A hereto.

                  SECTION 1.05. [Intentionally omitted].

                  SECTION 1.06.  SEPARATION OF WARRANTS AND NOTES. The Notes and
                                 --------------------------------
the Warrants to which they initially related now are separately transferable.

                  SECTION  1.07.  REGISTRATION.  The Company  will keep,  at the
office or agency  maintained  by the  Company  for such  purpose,  a register or
registers in which, subject to such reasonable  regulations as it may prescribe,
the Company shall provide for the  registration of, and registration of transfer
and exchange of, Warrants as provided in this Article. Each person designated by
the Company  from time to time as a person  authorized  to register the transfer
and  exchange  of  the  Warrants  is  hereinafter   called,   individually   and
collectively, the "REGISTRAR." The Company hereby initially appoints the Warrant
Agent as  Registrar.  Upon  written  notice to the Warrant  Agent and any acting
Registrar, the Company may appoint a successor Registrar for such purposes.

                  The Company will at all times designate one person (who may be
the Company and who need not be a Registrar)  to act as  repository  of a master
list of names and addresses of the holders of Warrants (the "WARRANT REGISTER").
The Warrant Agent will act as such repository unless and until some other person
is, by written  notice from the Company to the Warrant Agent and the  Registrar,
designated by the Company to act as such. The Company shall cause each Registrar
to furnish to such  repository,  on a current basis,  such information as to all
registrations  of transfer and exchanges  effected by such Registrar,  as may be
necessary  to enable  such  repository  to maintain  the Warrant  Register on as
current a basis as is practicable.

                  SECTION 1.08. REGISTRATION OF TRANSFERS OR EXCHANGES.
                                --------------------------------------

                  (a)      TRANSFER OR EXCHANGE OF DEFINITIVE WARRANTS. When
                           -------------------------------------------
Definitive Warrants are presented to the Warrant Agent with a request from the
holder:

                  (i)      to register the transfer of the Definitive  Warrants;
                           or

                  (ii)     to exchange  such  Definitive  Warrants  for an equal
                           number of  Definitive  Warrants  of other  authorized
                           denominations,

the Warrant Agent shall  register the transfer or make the exchange as requested
if the  requirements  for such  transactions  set forth in this Section 1.08 are
met; provided, however, that the Definitive Warrants presented or surrendered by
a holder for registration of transfer or exchange:

         (x)      shall be duly endorsed or accompanied by a written instruction
                  of transfer or  exchange in form  satisfactory  to the Company
                  and the Warrant Agent,  duly executed by such holder or by his
                  attorney, duly authorized in writing; and

         (y)      in the case of  Warrants  the offer and sale of which have not
                  been registered under the Securities Act and are presented for
                  transfer or exchange  prior to (1) the date which is two years
                  (or such  shorter  period as may be  permitted  by Rule 144(k)
                  under the Securities Act (or any successor provision thereto))
                  after  the  later  of the  date of  original  issuance  of the
                  Warrants  and  the  last  date on  which  the  Company  or any
                  affiliate of the Company (or any predecessor  thereto) was the
                  owner of such Warrants, or (2) such later date, if any, as may
                  be required by any  applicable  law (the  "RESALE  RESTRICTION
                  TERMINATION  DATE"), such Warrants shall be accompanied by the
                  following additional information and documents, as applicable:

                  (A)      if such  Warrants are being  delivered to the Warrant
                           Agent by a  holder  for  registration  in the name of
                           such holder,  without transfer,  a certification from
                           such holder to that effect (in substantially the form
                           of EXHIBIT C hereto); or
                  (B)      if such Warrants are being transferred to a qualified
                           institutional  buyer (as  defined  in Rule 144A under
                           the  Securities  Act), (a "QIB") in  accordance  with
                           Rule 144A under the Securities  Act, a  certification
                           from the transferor to that effect (in  substantially
                           the form of EXHIBIT C hereto);

                  (C)      if such Warrants are being transferred in reliance on
                           Regulation S  ("REGULATION  S") under the  Securities
                           Act of  1933,  as  amended  (the  "SECURITIES  ACT"),
                           delivery by the transferor of a certification to that
                           effect  (in  substantially  the  form  of  EXHIBIT  C
                           hereto), and a Certificate for Regulation S Transfers
                           in the form of EXHIBIT D hereto; or

                  (D)      if such Warrants are being transferred in reliance on
                           Rule 144 under the  Securities  Act,  delivery by the
                           transferor of (i) a certification from the transferor
                           to that effect (in  substantially the form of EXHIBIT
                           C hereto),  and (ii) an opinion of counsel reasonably
                           satisfactory  to the  Company to the effect that such
                           transfer is in compliance with the Securities Act; or

                  (E)      if such Warrants are being transferred in reliance on
                           another exemption from the registration  requirements
                           of the  Securities  Act,  a  certification  from  the
                           transferor to that effect (in  substantially the form
                           of  EXHIBIT  C  hereto)  and an  opinion  of  counsel
                           reasonably  satisfactory to the Company to the effect
                           that  such  transfer  is  in   compliance   with  the
                           Securities Act;  PROVIDED that the Company may, based
                           upon  the  views  of its own  counsel,  instruct  the
                           Warrant  Agent not to register  such  transfer in any
                           case where the  proposed  transferee  is not a QIB or
                           Non-U.S. Person.

                  (b)  RESTRICTIONS  ON TRANSFER OF A  DEFINITIVE  WARRANT FOR A
BENEFICIAL  INTEREST  IN A  GLOBAL  WARRANT.  A  Definitive  Warrant  may not be
transferred  by a holder for a beneficial  interest in a Global  Warrant  except
upon  satisfaction  of the  requirements  set forth  below.  Upon receipt by the
Warrant  Agent  of  a  Definitive  Warrant,  duly  endorsed  or  accompanied  by
appropriate  instruments of transfer, in form satisfactory to the Warrant Agent,
together with

                  (A)      certification  from such holder (in substantially the
                           form  of  EXHIBIT  C  hereto)  that  such  Definitive
                           Warrant is being  transferred  to a QIB in accordance
                           with Rule 144A under the Securities Act; and

                  (B)      written  instructions  directing the Warrant Agent to
                           make,  or  to  direct  the  Depositary  to  make,  an
                           endorsement  on the  Global  Warrant  to  reflect  an
                           increase  in the  aggregate  amount  of the  Warrants
                           represented by the Global Warrant,

then the Warrant Agent shall cancel such Definitive Warrant and cause, or direct
the  Depositary  to cause,  in  accordance  with the standing  instructions  and
procedures  existing between the Depositary and the Warrant Agent, the number of
Warrants  represented by the Global Warrant to be increased  accordingly.  If no
Global  Warrant is then  outstanding,  the Company shall issue,  and the Warrant
Agent upon written instructions from the Company shall authenticate a new Global
Warrant in the appropriate amount.

                  (c) TRANSFER OR EXCHANGE OF GLOBAL  WARRANTS.  The transfer or
exchange of Global  Warrants or beneficial  interests  therein shall be effected
through the  Depositary,  in  accordance  with this  Section  1.08,  the Private
Placement Legend (as defined herein), this Agreement (including the restrictions
on transfer set forth herein) and the procedures of the Depositary therefor.

                  (d)      TRANSFER OR EXCHANGE OF A BENEFICIAL INTEREST IN A
                           --------------------------------------------------
GLOBAL WARRANT FOR A DEFINITIVE WARRANT.
- - ----------------------------------------

         (i)      Any person  having a beneficial  interest in a Global  Warrant
                  may  transfer  or  exchange  such  beneficial  interest  for a
                  Definitive  Warrant  upon  receipt  by the  Warrant  Agent  of
                  written  instructions or such other form of instructions as is
                  customary  for  the  Depositary  from  the  Depositary  or its
                  nominee on behalf of any person  having a beneficial  interest
                  in a Global  Warrant,  including  a written  order  containing
                  registration  instructions  and,  in  the  case  of  any  such
                  transfer   or  exchange   prior  to  the  Resale   Restriction
                  Termination  Date, the following  additional  information  and
                  documents:

                  (A)      if such beneficial  interest is being  transferred to
                           the person  designated by the Depositary as being the
                           beneficial owner, a certification from such person to
                           that effect (in  substantially  the form of EXHIBIT C
                           hereto); or

                  (B)      if such beneficial interest is being transferred to a
                           QIB in accordance with Rule 144A under the Securities
                           Act,  a  certification  from the  transferor  to that
                           effect  (in  substantially  the  form  of  EXHIBIT  C
                           hereto); or

                  (C)      if such beneficial  interest is being  transferred in
                           reliance on  Regulation S under the  Securities  Act,
                           delivery by the transferor if (i) a certification  to
                           that effect (in  substantially in the form of EXHIBIT
                           C hereto),  and (ii) a Certificate  for  Regulation S
                           Transfers  (in  substantially  the form of  EXHIBIT D
                           hereto); or

                  (D)      if such beneficial  interest is being  transferred in
                           reliance  on  Rule  144  under  the  Securities  Act,
                           delivery by the transferor of (i) a certification  to
                           that effect (in  substantially  the form of EXHIBIT C
                           hereto)  and (ii) an opinion  of  counsel  reasonably
                           satisfactory  to the  Company to the effect that such
                           transfer is in compliance with the Securities Act; or

                  (E)      if such beneficial  interest is being  transferred in
                           reliance on another  exemption from the  registration
                           requirements  of the Securities  Act, a certification
                           from the transferor to that effect (in  substantially
                           the form of  EXHIBIT  C  hereto)  and an  opinion  of
                           counsel reasonably satisfactory to the Company to the
                           effect that such transfer is in  compliance  with the
                           Securities   Act;   provided  that  the  Company  may
                           instruct  the  Warrant  Agent  not to  register  such
                           transfer in any case where the proposed transferee is
                           not a QIB or Non-U.S.  Person, then the Warrant Agent
                           will  cause,   in   accordance   with  the   standing
                           instructions  and  procedures  existing  between  the
                           Depositary  and  the  Warrant  Agent,  the  aggregate
                           amount  of the  Global  Warrant  to be  reduced  and,
                           following  such  reduction,  the Company will execute
                           and, upon receipt of an  authentication  order in the
                           form  of  an  officers'  certificate  (a  certificate
                           signed by two officers of such  company,  one of whom
                           must be the principal  executive  officer,  principal
                           financial  officer or principal  accounting  officer)
                           (an "OFFICERS' Certificate"),  the Warrant Agent will
                           authenticate   and  deliver  to  the   transferee   a
                           Definitive Warrant.

         (ii)     Definitive  Warrants  issued  in  exchange  for  a  beneficial
                  interest in a Global Warrant  pursuant to this Section 1.08(d)
                  shall  be  registered  in such  names  and in such  authorized
                  denominations as the Depositary, pursuant to instructions from
                  its  direct  or  indirect  participants  or  otherwise,  shall
                  instruct the Warrant Agent in writing. The Warrant Agent shall
                  deliver such Definitive Warrants to the persons in whose names
                  such Warrants are so registered  and adjust the Global Warrant
                  pursuant to paragraph (h) of this Section 1.08.

                  (e)  RESTRICTIONS ON TRANSFER OR EXCHANGE OF GLOBAL  WARRANTS.
Notwithstanding   any  other  provisions  of  this  Agreement  (other  than  the
provisions  set forth in subsection  (f) of this Section 1.08), a Global Warrant
may not be  transferred  or exchanged as a whole except by the  Depositary  to a
nominee of the Depositary or by a nominee of the Depositary to the Depositary or
another  nominee of the Depositary or by the Depositary or any such nominee to a
successor Depositary or a nominee of such successor Depositary.

                  (f)      AUTHENTICATION OF DEFINITIVE WARRANTS IN ABSENCE OF
                           ---------------------------------------------------
DEPOSITARY.  If at any time:
- - ----------
         (i)      the  Depositary for the Global  Warrants  notifies the Company
                  that the  Depositary  is  unwilling  or unable to  continue as
                  Depositary for the Global  Warrant and a successor  Depositary
                  for the Global  Warrant is not appointed by the Company within
                  90 days after delivery of such notice; or

         (ii)     the  Company,  at its sole  discretion,  notifies  the Warrant
                  Agent in  writing  that it  elects to cause  the  issuance  of
                  Definitive   Warrants  for  all  Global  Warrants  under  this
                  Agreement,

then the Company will execute,  and the Warrant  Agent will,  upon receipt of an
Officers'  Certificate  requesting the authentication and delivery of Definitive
Warrants,  authenticate and deliver Definitive Warrants,  in an aggregate number
equal to the aggregate number of warrants  represented by the Global Warrant, in
exchange for such Global Warrant.

                  (g) PRIVATE PLACEMENT LEGEND. Upon the transfer or exchange of
Warrant  Certificates  not  bearing  the  legend set forth on EXHIBIT A attached
hereto (the "PRIVATE PLACEMENT LEGEND"), the Warrant Agent shall deliver Warrant
Certificates that do not bear the Private  Placement Legend.  Upon the transfer,
exchange or replacement of Warrant  Certificates  bearing the Private  Placement
Legend,  the Warrant  Agent shall  deliver  Warrant  Certificates  that bear the
Private  Placement Legend unless,  and the Warrant Agent is hereby authorized to
deliver Warrant  Certificates without the Private Placement Legend if, (i) there
is delivered to the Warrant Agent an opinion of counsel reasonably  satisfactory
to the Company and the Warrant  Agent to the effect that neither such legend nor
the  related  restrictions  on  transfer  are  required  in  order  to  maintain
compliance  with the provisions of the Securities Act or (ii) the Warrants to be
transferred  or exchanged  represented  by such Warrant  Certificates  are being
transferred or exchanged pursuant to an effective  registration  statement under
the Securities Act.

                  (h)  CANCELLATION OR ADJUSTMENT OF A GLOBAL  WARRANT.  At such
time as all beneficial  interests in a Global Warrant have either been exchanged
for Definitive Warrants, redeemed,  repurchased or canceled, such Global Warrant
shall be returned to the Company or, upon written  order to the Warrant Agent in
the form of an Officers' Certificate from the Company,  retained and canceled by
the Warrant  Agent.  At any time prior to such  cancellation,  if any beneficial
interest in a Global  Warrant is exchanged for  Definitive  Warrants,  redeemed,
repurchased  or  canceled,  the number of  Warrants  represented  by such Global
Warrant shall be reduced and an endorsement shall be made on such Global Warrant
by the Warrant Agent to reflect such reduction.

                  (i)      OBLIGATIONS WITH RESPECT TO TRANSFERS OR EXCHANGES OF
                           -----------------------------------------------------
 DEFINITIVE WARRANTS.
 -------------------

         (i)      To permit registrations of transfers or exchanges, the Company
                  shall  execute,  and the  Warrant  Agent  shall  authenticate,
                  Definitive Warrants and Global Warrants.

         (ii)     All Definitive  Warrants and Global  Warrants  issued upon any
                  registration,  transfer or exchange of Definitive  Warrants or
                  Global Warrants shall be the valid obligations of the Company,
                  entitled to the same benefits under this Warrant  Agreement as
                  the Definitive  Warrants or Global Warrants  surrendered  upon
                  the registration of transfer or exchange.

         (iii)    Prior to due presentment  for  registration of transfer of any
                  Warrant,  the Warrant Agent and the Company may deem and treat
                  the person in whose  name any  Warrant  is  registered  as the
                  absolute owner of such Warrant,  and neither the Warrant Agent
                  nor the Company shall be affected by notice to the contrary.

                  SECTION 1.09. LOST,  STOLEN,  DESTROYED,  DEFACED OR MUTILATED
WARRANT CERTIFICATES.  Upon receipt by the Company and the Warrant Agent (or any
agent of the Company or the  Warrant  Agent,  if  requested  by the  Company) of
evidence satisfactory to them of the loss, theft,  destruction,  defacement,  or
mutilation of any Warrant Certificate and of indemnity satisfactory to them and,
in the  case of  mutilation  or  defacement,  upon  surrender  of  such  Warrant
Certificate  to the  Warrant  Agent for  cancellation,  then,  in the absence of
notice to the Company or the Warrant  Agent that such  Warrant  Certificate  has
been  acquired by a BONA FIDE  purchaser  or holder in due  course,  the Company
shall execute,  and an authorized  signatory of the Warrant Agent shall manually
authenticate  and  deliver,  in  exchange  for or in lieu of the  lost,  stolen,
destroyed,  defaced or mutilated Warrant Certificate,  a new Warrant Certificate
representing a like number of Warrants, bearing a number or other distinguishing
symbol not contemporaneously  outstanding.  Upon the issuance of any new Warrant
Certificate  under this Section in a name other than the prior registered holder
of the lost, stolen,  destroyed,  defaced or mutilated Warrant Certificate,  the
Company may require the payment from the holder of such Warrant Certificate of a
sum  sufficient to cover any tax, stamp tax or other  governmental  charges that
may be imposed in relation  thereto and any other  expenses  (including the fees
and expenses of the Warrant Agent and the Registrar) in connection therewith.

                  Every substitute  Warrant  Certificate  executed and delivered
pursuant  to this  Section  in lieu of any  lost,  stolen or  destroyed  Warrant
Certificate  shall  constitute  an  additional  contractual  obligation  of  the
Company,  whether or not the lost, stolen or destroyed Warrant Certificate shall
be at any time  enforceable by anyone,  and shall be entitled to the benefits of
(but  shall be  subject  to all the  limitations  of  rights  set forth in) this
Agreement   equally  and   proportionately   with  any  and  all  other  Warrant
Certificates  duly  executed and  delivered  hereunder.  The  provisions of this
Section 1.09 are  exclusive  with respect to the  replacement  of lost,  stolen,
destroyed,  defaced or mutilated Warrant Certificates and shall preclude (to the
extent lawful) any and all other rights or remedies  notwithstanding  any law or
statute  existing  or  hereafter  enacted to the  contrary  with  respect to the
replacement  of  lost,   stolen,   destroyed,   defaced  or  mutilated   Warrant
Certificates.

                  The Warrant  Agent is hereby  authorized  to  authenticate  in
accordance  with the provisions of this  Agreement,  and deliver the new Warrant
Certificates required pursuant to the provisions of this Section.

                  SECTION 1.10. OFFICES FOR EXERCISE, ETC. So long as any of the
Warrants  remain  outstanding,  the Company will  designate  and maintain in the
Borough of  Manhattan,  The City of New York:  (a) an office or agency where the
Warrant  Certificates  may be presented  for  exercise,  (b) an office or agency
where the Warrant Certificates may be presented for registration of transfer and
for  exchange,  and (c) an office or agency where notices and demands to or upon
the Company in respect of the Warrants or of this  Agreement may be served.  The
Company may from time to time change or rescind such designation, as it may deem
desirable or expedient; provided, however, that an office or agency shall at all
times be  maintained  in the  Borough  of  Manhattan,  The City of New York,  as
provided in the first  sentence of this  Section.  In addition to such office or
offices or agency or agencies,  the Company may from time to time  designate and
maintain one or more  additional  offices or agencies within or outside The City
of New York,  where  Warrant  Certificates  may be presented for exercise or for
registration of transfer or for exchange,  and the Company may from time to time
change or rescind such designation,  as it may deem desirable or expedient.  The
Company  will give to the Warrant  Agent  written  notice of the location of any
such office or agency and of any change of location thereof.  The Company hereby
designates the Warrant Agent at its principal  corporate trust office identified
in Section 7.03 in the Borough of Manhattan,  The City of New York (the "WARRANT
AGENT OFFICE"),  as the initial agency maintained for each such purpose. In case
the Company  shall fail to  maintain  any such office or agency or shall fail to
give such  notice of the  location  or of any  change in the  location  thereof,
presentations  and  demands  may be made and notice may be served at the Warrant
Agent Office and the Company  appoints the Warrant Agent as its agent to receive
all such presentations, surrenders, notices and demands.

                                   ARTICLE II
                 DURATION, EXERCISE OF WARRANTS; EXERCISE PRICE
                           AND REPURCHASE OF WARRANTS

                  SECTION 2.01.  DURATION OF WARRANTS.  Subject to the terms and
conditions  established herein, the Warrants shall expire at 5:00 p.m., New York
City time, on April 15, 2008. The applicable  date of expiration of a particular
Warrant is referred to herein as the  "EXPIRATION  DATE" of such  Warrant.  Each
Warrant may be exercised on any Business Day (as defined  below) on or after the
Exercisability Date (as defined in Section 2.02) and on or prior to the close of
business on the Expiration Date.

                  Any Warrant not exercised  before the close of business on the
Expiration  Date shall  become  void,  and all  rights of the  holder  under the
Warrant  Certificate  evidencing  such  Warrant and under this  Agreement  shall
cease.

                  "BUSINESS  DAY"  shall  mean any day on which (i) banks in The
City of New York, (ii) the principal U.S. securities exchange or market, if any,
on which any  Common  Stock is  listed  or  admitted  to  trading  and (iii) the
principal U.S.  securities exchange or market, if any, on which the Warrants are
listed or admitted to trading are open for business.

                  SECTION  2.02.  EXERCISE,   EXERCISE  PRICE,   SETTLEMENT  AND
DELIVERY.  (a) Subject to the  provisions  of this  Agreement,  each holder of a
Warrant  shall  have the  right to  purchase  from the  Company  on or after the
Exercisability  Date and on or prior to the close of business on the  Expiration
Date the number of fully paid, registered and non-assessable Warrant Shares (and
any other  securities or property  purchasable or  deliverable  upon exercise of
such  Warrant  as  provided  in  Article  V) which the holder may at the time be
entitled  to receive on  exercise  of such  Warrant,  subject to  adjustment  in
accordance  with  Article  V  hereof,  at the  purchase  price of $0.01 for each
Warrant Share purchased (the "EXERCISE PRICE"). The number and amount of Warrant
Shares for which a particular  Warrant may be exercised  (the  "EXERCISE  RATE")
shall be  subject  to  adjustment  from time to time as set  forth in  Article V
hereof.

                  "EXERCISABILITY DATE" means the first day on or after the date
hereof on which there will have occurred an Exercise Event.

                  "EXERCISE  EVENT"  means  the  date of the  occurrence  of the
earliest of: (i) the time  immediately  prior to the  occurrence  of a Change of
Control (as defined in the  Indenture),  (ii) (a) the 180th day (or such earlier
date as determined by the Company in its sole discretion)  following the closing
of an Initial Public Equity Offering (as defined herein) or (b) upon the closing
of an Initial  Public Equity  Offering but only in respect of Warrants,  if any,
required to be  exercised to permit the holders  thereof to sell Warrant  Shares
pursuant to their respective registration rights, (iii) the time when a class of
equity securities of the Company is listed on a national  securities exchange or
authorized for quotation on the Nasdaq National  Market or is otherwise  subject
to registration under the Exchange Act, or (iv) April 30, 2001.

                  "INITIAL  PUBLIC  EQUITY  OFFERING"  means  a  primary  public
offering  (whether or not  underwritten,  but excluding any offering pursuant to
Form S-8 under the  Securities  Act or any other  publicly  registered  offering
pursuant to the  Securities  Act  pertaining  to an issuance of shares of Common
Stock or  securities  exercisable  therefor  under any  benefit  plan,  employee
compensation  plan, or employee or director stock purchase plan) of Common Stock
pursuant to an effective registration statement under the Securities Act.

                  "PERSON"  means  any  individual,  corporation,   partnership,
limited liability company, partnership, joint venture, association,  joint-stock
company, trust, business trust, unincorporated  organization,  government or any
agency or  political  subdivision  thereof or any other  entity,  including  any
predecessor of any such entity.

                  "TRIGGERING DATE" means the date of the consummation of a bona
fide underwritten public offering of Common Stock, as a result of which at least
20% of the  outstanding  shares of Common  Stock are  listed on a United  States
national securities exchange or the Nasdaq National Market.

                  (b)  Warrants  may be  exercised on or after the date they are
exercisable hereunder by (i) surrendering at any office or agency maintained for
that purpose by the Company  pursuant to Section 1.10 (each a "WARRANT  EXERCISE
OFFICE")  the Warrant  Certificate  evidencing  such  Warrants  with the form of
election to purchase Warrant Shares set forth on the reverse side of the Warrant
Certificate  (the  "ELECTION  TO  EXERCISE")  duly  completed  and signed by the
registered   holder  or  holders   thereof  or  by  the  duly  appointed   legal
representative  thereof or by a duly authorized  attorney,  and in the case of a
transfer,   such  signature  shall  be  guaranteed  by  an  eligible   guarantor
institution,  and (ii) paying in full the  Exercise  Price for each such Warrant
exercised. Each Warrant may be exercised only in whole.

                  (c) Simultaneously with the exercise of each Warrant,  payment
in full of the  aggregate  Exercise  Price  may be made,  at the  option  of the
holder,  (i) in cash in United  States  dollars or by certified or official bank
check,  (ii)  by a  Cashless  Exercise  (as  defined  below)  or  (iii)  by  any
combination  of (i) and (ii), to the Warrant  Exercise  Office where the Warrant
Certificate is being surrendered.  A "CASHLESS  EXERCISE" shall mean an exercise
of a Warrant in accordance  with the  immediately  following two  sentences.  To
effect a  Cashless  Exercise,  the holder  may  exercise  a Warrant or  Warrants
without  payment of the Exercise Price in cash by  surrendering  such Warrant or
Warrants  (represented  by one or more Warrant  Certificates  ) and, in exchange
therefor,  receiving  such number of shares of Common Stock equal to the product
of (1) that  number  of  shares of Common  Stock  for  which  such  Warrant  are
exercisable and which would be issuable in the event of an exercise with payment
in cash of the Exercise  Price and (2) the Cashless  Exercise  Ratio (as defined
below). The "CASHLESS  EXERCISE RATIO" shall equal a fraction,  the numerator of
which is the excess of the Current Market Value (calculated as set forth in this
Agreement)  per share of Common Stock on the date of exercise  over the Exercise
Price per share of Common Stock as of the date of exercise  and the  denominator
of which is the Current  Market  Value per share of Common  Stock on the date of
exercise.  Upon surrender of a Warrant  Certificate  representing  more than one
Warrant in connection with a holder's option to elect a Cashless Exercise,  such
holder must specify the number of Warrants for which such Warrant Certificate is
to  be  exercised  (without  giving  effect  to  such  Cashless  Exercise).  All
provisions  of this  Agreement  shall be  applicable  with respect to a Cashless
Exercise  of a Warrant  Certificate  for less than the full  number of  Warrants
represented  thereby.  No payment or adjustment  shall be made on account of any
distributions  of  dividends  on the Common  Stock  issued  upon  exercise  of a
Warrant.

                  If the Company has not  effected  the  registration  under the
Securities Act of the offer and sale of the Warrant Shares by the Company to the
holders of the  Warrants on or prior to the EXERCISE  DATE (as defined  herein),
the Company may elect to require  that the  holders of the  Warrants  effect the
exercise  thereof solely pursuant to the Cashless  Exercise option and may amend
the  Warrants and this  Agreement  to  eliminate  the option to pay the Exercise
Price in cash.  The Company shall  calculate and transmit to the Warrant  Agent,
and the Warrant Agent shall have no obligation  under this section to calculate,
the Cashless Exercise Ratio.

                  (d) Upon  surrender of a Warrant  Certificate  and payment and
collection of the Exercise Price at any Warrant  Exercise Office (other than any
Warrant  Exercise  Office  that also is an office of the  Warrant  Agent),  such
Warrant  Certificate  and  payment  shall be promptly  delivered  to the Warrant
Agent.  The "EXERCISE  DATE" shall be the date when all of the items referred to
in the first sentence of each of paragraphs (b) and (c) of this Section 2.02 are
received by the Warrant Agent at or prior to 11:00 a.m.,  New York City time, on
a Business  Day and the  exercise of the  Warrants  will be effective as of such
Exercise  Date.  If any  items  referred  to in the  first  sentence  of each of
paragraphs  (b) and (c) are received  after 11:00 a.m., New York City time, on a
Business  Day,  the  exercise of the Warrants to which such item relates will be
effective on the next succeeding Business Day. Notwithstanding the foregoing, in
the case of an exercise of Warrants on the Expiration  Date, if all of the items
referred to in the first sentence of each of paragraphs (b) and (c) are received
by the  Warrant  Agent at or prior to 5:00  p.m.,  New York  City  time,  on the
Expiration Date, the exercise of the Warrants to which such items relate will be
effective on the Expiration Date.

                  (e) Upon the  exercise  of a Warrant  in  accordance  with the
terms hereof,  the receipt of a Warrant  Certificate and payment of the Exercise
Price (or election of the Cashless  Exercise  option),  the Warrant Agent shall:
(i) except to the extent  exercise  of the  Warrant  has been  effected  through
Cashless  Exercise,  cause an amount equal to the aggregate Exercise Price to be
paid to the  Company by  crediting  the same to the  account  designated  by the
Company  in writing  to the  Warrant  Agent for that  purpose;  (ii)  advise the
Company  promptly  by  telephone  of the amount so  deposited  to the  Company's
account and promptly  confirm such  telephonic  advice in writing;  and (iii) as
soon as  practicable,  advise the  Company in writing of the number of  Warrants
exercised in accordance  with the terms and conditions of this Agreement and the
Warrant Certificates,  the instructions of each exercising holder of the Warrant
Certificates with respect to delivery of the Warrant Shares to which such holder
is entitled upon such exercise,  and such other information as the Company shall
reasonably request.

                  (f) Subject to Section  5.02  hereof,  as soon as  practicable
after the  exercise  of any Warrant or  Warrants  in  accordance  with the terms
hereof,  the  Company  shall issue or cause to be issued to, or upon the written
order of, the  registered  holder of the  Warrant  Certificate  evidencing  such
exercised  Warrant or Warrants,  a certificate  or  certificates  evidencing the
Warrant  Shares to which such  holder is  entitled,  in fully  registered  form,
registered  in such name or names as may be directed by such holder  pursuant to
the  Election  to  Exercise,  as  set  forth  on  the  reverse  of  the  Warrant
Certificate.  Such  certificate  or  certificates  evidencing the Warrant Shares
shall be deemed to have been  issued and any persons  who are  designated  to be
named herein shall be deemed to have become the holder of record of such Warrant
Shares as of the close of business on the Exercise  Date, the Warrant Shares may
initially be issued in global form (the  "GLOBAL  SHARES").  Such Global  Shares
shall  represent  such of the  outstanding  Warrant Shares as shall be specified
therein and each shall provide that it shall  represent the aggregate  amount of
outstanding  Warrant  Shares  from time to time  endorsed  thereon  and that the
aggregate amount of outstanding Warrant Shares represented thereby may from time
to time be reduced or increased,  as  appropriate.  Any  endorsement of a Global
Share to  reflect  the  amount of any  increase  or  decrease  in the  amount of
outstanding  Shares  represented  thereby shall be made by the registrar for the
Warrant Shares and the Depositary in accordance with  instructions  given by the
holder  thereof.  The  Depository  Trust  Company  (or its  nominee)  shall  (if
possible)  act as the  Depositary  with  respect  to the Global  Shares  until a
successor  shall be appointed by the Company and the  registrar  for the Warrant
Shares.  After such exercise of any Warrant or Warrant Shares, the Company shall
also issue or cause to be issued to or upon the written order of the  registered
holder of such Warrant Certificate, a new Warrant Certificate,  countersigned by
the Warrant  Agent  pursuant to written  instruction,  evidencing  the number of
Warrants, if any, remaining unexercised unless such Warrants shall have expired.

                  SECTION 2.03.  CANCELLATION  OF WARRANT  CERTIFICATES.  In the
event the Company  shall  purchase or otherwise  acquire  Warrants,  the Warrant
Certificates  evidencing such Warrants may thereupon be delivered to the Warrant
Agent,  and if so  delivered,  shall at the  Company's  written  instruction  be
canceled  by it  and  retired.  The  Warrant  Agent  shall  cancel  all  Warrant
Certificates  properly  surrendered  for  exchange,  substitution,  transfer  or
exercise.  Upon the Company's  written request,  the Warrant Agent shall deliver
such canceled Warrant Certificates to the Company.

                  SECTION  2.04.  NOTICE  OF  AN  EXERCISE  EVENT.  As  soon  as
practicable after the occurrence of an Exercise Event, the Company shall send or
cause to be sent to each holder of Warrants  with respect to which such Exercise
Event has  occurred,  to the extent  that the  Warrants  are held of record by a
depositary  or other agent (with a copy to the Warrant  Agent),  by  first-class
mail, at the addresses  appearing on the Warrant Register,  a notice prepared by
the Company advising such holder of the Exercise Event which has occurred, which
notice shall  describe the type of Exercise Event and the date of the occurrence
thereof, as applicable, and, in either case, the date of expiration of the right
to exercise the Warrants prominently set forth in the face of such notice.

                                   ARTICLE III

                          OTHER PROVISIONS RELATING TO
                          RIGHTS OF HOLDERS OF WARRANTS

                  SECTION 3.01.  ENFORCEMENT OF RIGHTS. (a)  Notwithstanding any
of the  provisions  of this  Agreement,  any holder of any Warrant  Certificate,
without the consent of the Warrant  Agent,  the holder of any Warrant  Shares or
the holder of any other  Warrant  Certificate,  may,  in and for his own behalf,
enforce,  and may institute and maintain any suit, action or proceeding  against
the Company  suitable to enforce,  his right to exercise the Warrant or Warrants
evidenced  by his Warrant  Certificate  in the manner  provided in such  Warrant
Certificate and in this Agreement.

                  (b) Neither the  Warrants  nor any Warrant  Certificate  shall
entitle the holders thereof to any of the rights of a holder of shares of Common
Stock,  including,  without  limitation,  the  right to vote or to  receive  any
dividends or other payments or to consent or to receive  notice as  stockholders
in respect of the meetings of  stockholders  or for the election of directors of
the Company or any other matter,  or any rights whatsoever as a holder of shares
of Common Stock,  except as expressly  provided herein  (including  Section 5.03
hereof).

                  SECTION 3.02.  OBTAINING STOCK EXCHANGE LISTINGS.  The Company
will from  time to time  take all  action  which  may be  necessary  so that the
Warrant Shares,  immediately  upon their issuance upon the exercise of Warrants,
will be listed on the  principal  securities  exchanges  and markets  within the
United States or Canada (including the Nasdaq National Market), if any, on which
other shares of Common Stock are then listed or quoted.

                                   ARTICLE IV

                        CERTAIN COVENANTS OF THE COMPANY

                  SECTION  4.01.  PAYMENT  OF TAXES.  The  Company  will pay all
documentary stamp taxes  attributable to the initial issuance of Warrants and of
the Warrant Shares upon the exercise of Warrants;  provided,  however,  that the
Company shall not be required to pay any tax or other governmental  charge which
may  be  payable  in  respect  of  any  transfer  or  exchange  of  any  Warrant
Certificates  or any  certificates  for Warrant  Shares in a name other than the
registered  holder of a Warrant  Certificate  surrendered upon the exercise of a
Warrant. In any such case, no transfer or exchange shall be made unless or until
the person or persons requesting issuance thereof shall have paid to the Company
the amount of such tax or other governmental charge or shall have established to
the satisfaction of the Company that such tax or other  governmental  charge has
been paid or an exemption is available therefrom.

                  SECTION 4.02.  RULES 144 AND 144A.  While any Warrants  remain
outstanding, the Company covenants that it shall file the reports required to be
filed by it under the Exchange Act, and the rules and regulations adopted by the
Securities and Exchange Commission thereunder,  in a timely manner in accordance
with the  requirements  of the  Exchange  Act. If at any time the Company is not
required to file such reports,  it will  distribute to each holder or beneficial
owner of Warrants that are  "restricted  securities"  within the meaning of Rule
144  and  are not  saleable  in full  under  paragraph  (k) of  Rule  144,  such
information  as is  necessary  to permit  sales  pursuant to Rule 144A under the
Securities Act.

                  SECTION  4.03.  FORM OF INITIAL  PUBLIC EQUITY  OFFERING.  The
Company agrees that it shall not make an Initial  Public Equity  Offering of any
class of its Capital Stock (other than the class of Capital Stock into which the
Warrants are  exercisable)  without adopting such amendments to the terms of the
Company's  Articles of  Incorporation  as may be  necessary  to provide that the
Warrant  Shares are  convertible  into the class of Capital Stock subject to the
Initial Public Equity  Offering (the "SUBJECT  CLASS") on a  share-for-share  or
other  equitable  basis;  PROVIDED that the rights,  conditions  and  privileges
attaching  to the  Subject  Class as  compared  to the  rights,  conditions  and
privileges  attaching  to the Common  Stock into  which such  Warrants  would be
convertible  on the date hereof (if the Warrants were  immediately  exercisable)
would not adversely  affect holders of the Warrant Shares;  it being  understood
that the Capital Stock into which the Warrants  shall be  convertible  (a) shall
represent the same economic interests,  but may not have the same voting rights,
in the Company as the Common Stock  outstanding on the date hereof and (b) shall
be identical to the class of Capital Stock issued and sold by the Company in the
Initial Public Equity Offering, if any.

                  SECTION 4.04.  SECURITIES ACT AND APPLICABLE  STATE SECURITIES
LAWS.  The  Company  shall  comply  with  all  applicable  laws,  including  the
Securities Act and any applicable  state securities laws, in connection with the
offer and sale of Common Stock (and other securities and property  deliverable )
upon exercise of the Warrants.

                  SECTION 4.05.  RESOLUTION OF PREEMPTIVE RIGHTS, IF ANY.
                                 ---------------------------------------
Neither the Warrants or the Warrant Shares shall be subject to any preemptive or
similar rights.

                                    ARTICLE V

                                   ADJUSTMENTS

                  SECTION 5.01.  ADJUSTMENT OF EXERCISE RATE; NOTICES.  The
                                 ------------------------------------
Exercise Rate is subject to adjustment from time to time as provided in this
Section.

                  (a)      ADJUSTMENT FOR CHANGE IN CAPITAL STOCK.  If,after the
                           --------------------------------------
 date hereof, the Company:

                  (i) pays a  dividend  or makes a  distribution  on  shares  of
         Common Stock in shares of Common Stock (other than any such dividend to
         the extent covered by Section 5.03);

                  (ii) subdivides any of its outstanding  shares of Common Stock
         into a greater number of shares;

                  (iii) combines any of its  outstanding  shares of Common Stock
         into a smaller number of shares;

                  (iv)  pays a  dividend  or makes a  distribution  on shares of
         Common Stock in shares of Capital Stock (as defined  below) (other than
         Common  Stock or rights,  warrants,  or options for its Common Stock to
         the extent such issuance or  distribution  is covered by Section 5.03);
         or

                  (v) issues by  reclassification  of any of its Common Stock or
         any shares of any of its Capital Stock;

then the Company shall adjust the Exercise Rate in effect  immediately  prior to
such action for each  Warrant then  outstanding  so that the holder of a Warrant
thereafter  exercised  may receive the number of shares of Capital  Stock of the
Company which such holder would have owned immediately  following such action if
such  holder had  exercised  the  Warrant  immediately  prior to such  action or
immediately prior to the record date applicable  thereto,  if any (regardless of
whether the Warrants then  outstanding  are then  exercisable and without giving
effect to the Cashless Exercise option).  If there are no outstanding  shares of
Common Stock that are of the same class as the Warrant Shares at the time of any
such action and such action has  therefore  been taken only in respect of Common
Stock, the adjustment shall relate to the Warrant Shares in their same form (and
not in the form of Common  Shares)  if it would not  frustrate  the  intent  and
purposes of this Section 5.01.

                  The adjustment  shall become effective  immediately  after the
record date in the case of a dividend or distribution and immediately  after the
effective date in the case of a subdivision, combination or reclassification. In
the event  that such  dividend  or  distribution  is not so paid or made or such
subdivision,  combination or reclassification is not effected, the Exercise Rate
shall again be adjusted to be the Exercise Rate which would then be in effect if
such record date or effective date had not been so fixed.

                  If after an  adjustment a holder of a Warrant upon exercise of
such Warrant may receive  shares of two or more classes of Capital  Stock of the
Company,  the Exercise Rate shall  thereafter be subject to adjustment  upon the
occurrence of an action taken with respect to any such class of Capital Stock as
is  contemplated  by this Article V with respect to the Common  Stock,  on terms
comparable to those applicable to Common Stock in this Article V.

                  Nothing in this Section  5.01(a) shall require any  adjustment
in the Exercise Rate upon (i) the issuance, conversion,  exchange or exercise of
options to acquire  shares of Common  Stock by, or the  issuance  of  restricted
stock  or  other  similar  equity-based  payments  to,  officers,  directors  or
employees of the Company;  provided  that the exercise  price of such options or
the purchase price of such restricted  stock, as the case may be, at the time of
issuance  thereof,  is at least equal to the then  Current  Market  Value of the
Common  Stock   underlying  such  options  or  restricted   stock  or  (ii)  the
reclassification of the Company's Common Stock into two or more series of common
stock with different voting powers but otherwise  representing the same economic
interests;  PROVIDED that such series of common stock will automatically convert
into  shares of Common  Stock  when the holder  sells,  exchanges  or  otherwise
transfers such shares to any person other than an affiliate of the holder.

                  (b)     ADJUSTMENT FOR SALE OF COMMON STOCK BELOW CURRENT
                          -------------------------------------------------
MARKET VALUE.
- - -------------

If,  after the date hereof,  the Company  grants or sells to an Affiliate of the
Company (other than a wholly-owned  subsidiary) any shares of Common Stock or of
securities  convertible  into or  exchangeable  or exercisable for any shares of
Common  Stock at a price below the then  Current  Market  Value  (other than (1)
pursuant to the exercise of the Warrants,  (2) upon the conversion,  exchange or
exercise of any security convertible, exchangeable or exercisable for, shares of
Common Stock  outstanding on the date hereof,  (3) upon conversion,  exchange or
exercise of convertible,  exchangeable or exercisable security as to which, upon
the issuance thereof, has previously been the subject of any required adjustment
pursuant to this Section 5 or (4) upon the  conversion,  exchange or exercise of
convertible,  exchangeable or exercisable  securities of the Company outstanding
on the date hereof (to the extent  permitted by the terms of such  securities as
in effect on the date of this  Agreement))  (calculated  as set forth in Section
5.01(l) hereof),  the Exercise Rate for each Warrant then  outstanding  shall be
adjusted in accordance with the formula:

                              E1 = E          (O + N)____
                                   ----------------------
                                           (O + (N x P/M))

where:

E1       =........the adjusted Exercise Rate for each Warrant then outstanding;

E        =........the then current Exercise Rate for each Warrant then
                  outstanding;

O        =        the number of shares of Common Stock outstanding immediately
                  prior to the sale of Common Stock or issuance of securities
                  convertible, exchangeable or exercisable for Common Stock;

N                 = the number of shares of Common  Stock so sold or the maximum
                  stated  number of shares of  Common  Stock  issuable  upon the
                  conversion,  exchange  or  exercise  of any such  convertible,
                  exchangeable or exercisable securities, as the case may be;

P        =        the  proceeds  per share of  Common  Stock  received  by the
                  Company,  which (i) in the case of  shares of Common  Stock is
                  the amount  received by the Company in  consideration  for the
                  sale  and  issuance  of such  shares;  and (ii) in the case of
                  securities convertible into or exchangeable or exercisable for
                  shares of Common  Stock is the amount  received by the Company
                  in consideration for the sale and issuance of such convertible
                  or  exchangeable or exercisable  securities,  plus the minimum
                  aggregate amount of additional  consideration,  other than the
                  surrender  of such  convertible  or  exchangeable  securities,
                  payable to the Company upon  exercise,  conversion or exchange
                  thereof; and

M         =       the Current Market Value as of the Time of  Determination or
                  at the time of sale,  as the  case may be  (calculated  as set
                  forth in Section 5.01(l) hereof).

                  The adjustment  shall become effective  immediately  after the
record  date for the  determination  of  stockholders  entitled  to receive  the
rights,  warrants  or  options  to which  this  paragraph  (b)  applies  or upon
consummation of the sale of Common Stock, as the case may be. To the extent that
shares of Common Stock are not delivered  after the expiration of such rights or
warrants,  the  Exercise  Rate  for  each  Warrant  then  outstanding  shall  be
readjusted  to the  Exercise  Rate which  would  otherwise  be in effect had the
adjustment  made upon the  issuance of such rights or warrants  been made on the
basis of  delivery  of only the  number  of  shares  of  Common  Stock  actually
delivered.  In the event that such  rights or  warrants  are not so issued,  the
Exercise  Rate for each Warrant then  outstanding  shall again be adjusted to be
the  Exercise  Rate  which  would  then be in  effect  if such  date  fixed  for
determination  of  stockholders  entitled to receive such rights or warrants had
not been so fixed.

                  No  adjustment  shall be made under this  paragraph (b) if the
application  of the formula stated above in this paragraph (b) would result in a
value of E1 that is lower than the value of E.

                  No adjustment  shall be made under this  paragraph (b) for any
adjustment  which is the subject of  paragraph  (c),  (d) or (e) of this Section
5.01.

                  "AFFILIATE"  means, with respect to any specified Person,  (i)
any other Person  directly or indirectly  controlling  or controlled by or under
direct or indirect  common control with such specified  Person or (ii) any other
Person that owns, directly or indirectly, 10% or more of such specified Person's
Voting Stock or any executive  officer or director of any such specified  Person
or other Person or, with respect to any natural Person, any other Person in such
Person's immediate family. For the purposes of this definition,  "control," when
used with  respect  to any  specified  Person,  means  the  power to direct  the
management and policies of such Person, directly or indirectly,  whether through
the  ownership of voting  securities,  by contract or  otherwise;  and the terms
"controlling"  and  "controlled"  have meanings  correlative  to the  foregoing.
Notwithstanding the foregoing,  no individual shall be deemed to be an Affiliate
of a Person  solely by reason of (a) such Person  being a party to an  Incumbent
Agreement (as defined in the Indenture) or (b) such Person owning an interest in
a  Restricted  Subsidiary  (as defined in the  Indenture)  pursuant  to, or as a
result of, an Incumbent Agreement (as defined in the Indenture).

                  (c)  NOTICE  OF  ADJUSTMENT.  Whenever  the  Exercise  Rate is
adjusted,   the  Company  shall  promptly  mail  to  holders  of  Warrants  then
outstanding at the addresses  appearing on the Warrant  Register a notice of the
adjustment.  The  Company  shall  file  with the  Warrant  Agent  and any  other
Registrar such notice and a certificate  from the Company's  independent  public
accountants briefly stating the facts requiring the adjustment and the manner of
computing it. The certificate  shall be conclusive  evidence that the adjustment
is correct.  Neither the Warrant Agent nor any such Registrar shall be under any
duty or  responsibility  with respect to any such certificate  except to exhibit
the same during normal business hours to any holder desiring inspection thereof.

                  (d) REORGANIZATION OF COMPANY;  SPECIAL DISTRIBUTIONS.  (i) If
the  Company,   in  a  single   transaction  or  through  a  series  of  related
transactions,  consolidates  with or  merges  with or into any  other  person or
sells,  assigns,  transfers,  leases,  conveys or  otherwise  disposes of all or
substantially  all of its  properties  and assets to another  person or group of
affiliated  persons or is a party to a merger or binding  share  exchange  which
reclassifies   or  changes  its   outstanding   Common  Stock  (a   "FUNDAMENTAL
TRANSACTION"),  (it  being  understood  that a single  transaction  or series of
related transactions  pursuant to which not less than ninety-five percent of the
outstanding shares of capital stock of the Company are exchanged for shares in a
single Affiliate (or any Person who, pursuant to such  transaction,  will become
such an  Affiliate)  shall be deemed to be a  Fundamental  Transaction,  and the
Affiliate acquiring such shares shall, for purposes of this clause, be deemed to
be the Surviving Person (as defined below)),  as a condition to consummating any
such  transaction  the person formed by or surviving any such  consolidation  or
merger if other than the  Company or the person to whom such  transfer  has been
made (the "SURVIVING PERSON") shall enter into a supplemental warrant agreement.
The  supplemental  warrant  agreement  shall  provide  (a) that the  holder of a
Warrant then  outstanding may exercise it for the kind and amount of securities,
cash or other assets which such holder would have received immediately after the
Fundamental  Transaction  if such holder had exercised  the Warrant  immediately
before the effective date of the  transaction  (whether or not the Warrants were
then exercisable and without giving effect to the Cashless  Exercise option) (it
being  understood that the Warrants will remain  exercisable  only in accordance
with their terms and that  conditions  to exercise,  such as payment of Exercise
Price, will remain  applicable),  assuming (to the extent  applicable) that such
holder (i) was not a constituent  person or an affiliate of a constituent person
to such transaction,  (ii) made no election with respect thereto,  and (iii) was
treated  alike with the  plurality  of  non-electing  holders,  and (b) that the
Surviving  Person  shall  succeed  to and be  substituted  to  every  right  and
obligation of the Company in respect of this  Agreement  and the  Warrants.  The
supplemental  warrant  agreement shall provide for adjustments which shall be as
nearly equivalent as may be practicable to the adjustments  provided for in this
Article  V. The  Surviving  Person  shall mail to  holders  of  Warrants  at the
addresses  appearing on the Warrant  Register a notice  briefly  describing  the
supplemental  warrant  agreement.  If the issuer of securities  deliverable upon
exercise of Warrants is an affiliate of the Surviving Person,  that issuer shall
join in the supplemental warrant agreement.

                  (ii) Notwithstanding the foregoing, if the Company enters into
a Fundamental  Transaction  with another  Person (other than a subsidiary of the
Company) and  consideration is payable to holders of the shares of Capital Stock
(or other  securities or property)  issuable or deliverable upon exercise of the
Warrants in exchange for such shares of Capital  Stock in  connection  with such
Fundamental  Transaction  which  consists  solely of cash,  then the  holders of
Warrants shall be entitled to receive distributions on the date of such event on
an equal basis with holders of such shares of Capital Stock (or other securities
issuable upon  exercise of the  Warrants) as if the Warrants had been  exercised
immediately prior to such event, less the aggregate Exercise Price. Upon receipt
of such payment, if any, the rights of a holder of a Warrant shall terminate and
cease and such holder's Warrants shall expire.

                  (iii) If this  paragraph (d) applies,  it shall  supersede the
application of paragraph (a) of this Section 5.01.

                  (e)  COMPANY DETERMINATION FINAL. Any determination that the
                       ---------------------------
Company or the board of directors of the Company must make pursuant to this
Article V is conclusive.

                  (f) WARRANT AGENT'S ADJUSTMENT  DISCLAIMER.  The Warrant Agent
shall have no duty to determine  when an adjustment  under this Article V should
be made,  how it should be made or what it should be. The  Warrant  Agent  shall
have no  duty to  determine  whether  a  supplemental  warrant  agreement  under
paragraph (d) need be entered into or whether any provisions of any supplemental
warrant  agreement are correct.  The Warrant Agent shall not be accountable  for
and makes no  representation  as to the validity or value of any  securities  or
assets  issued  upon  exercise  of  Warrants.  The  Warrant  Agent  shall not be
responsible for the Company's failure to comply with this Article V.

                  (g)  ADJUSTMENT  FOR TAX  PURPOSES.  In the event of a taxable
distribution to holders of shares of Common Stock which results in an adjustment
to the  number  of shares of  Common  Stock or other  consideration  for which a
Warrant  may  be  exercised,  the  holders  of  the  Warrants  may,  in  certain
circumstances,  be deemed to have  received  a  distribution  subject  to United
States federal income tax as a dividend.  The Company may make such increases in
the Exercise Rate, in addition to those otherwise  required by this Section,  as
it considers to be advisable in order that any event treated for federal  income
tax  purposes as a dividend of stock or stock rights shall not be taxable to the
recipients.

                  (h) UNDERLYING  SHARES. The Company shall at all times reserve
and keep  available,  free from  preemptive  rights,  out of its  authorized but
unissued  Common Stock or Common Stock held in the treasury of the Company,  for
the purpose of effecting  the  exercise of Warrants,  the full number of Warrant
Shares then  deliverable  upon the exercise of all Warrants then outstanding and
payment of the exercise price, and the shares so deliverable shall be fully paid
and nonassessable and free from all liens and security interests.

                  (i)  SPECIFICITY OF ADJUSTMENT.  Regardless of any adjustments
in the number or kind of shares  purchasable  upon the exercise of the Warrants,
Warrant  Certificates  theretofore or thereafter  issued may continue to express
the same  number  and kind of Shares per  Warrant  as are stated on the  Warrant
Certificates initially issuable pursuant to this Agreement.

                  (j)  VOLUNTARY  ADJUSTMENT.  The Company from time to time may
increase  the Exercise  Rate by any number and for any period of time  (provided
that such period shall not be less than 20 Business Days). Whenever the Exercise
Rate is so  increased,  the  Company  shall  mail to  holders  at the  addresses
appearing on the Warrant  Register  and file with the Warrant  Agent a notice of
the increase. The Company shall give the notice at least 15 days before the date
the increased  Exercise Rate takes effect.  The notice shall state the increased
Exercise Rate and the period it will be in effect.  A voluntary  increase in the
Exercise Rate does not change or adjust the Exercise Rate otherwise in effect as
determined by this Section 5.01.

                  (k) MULTIPLE ADJUSTMENTS.  After an adjustment to the Exercise
Rate for  outstanding  Warrants  under  this  Article  V, any  subsequent  event
requiring an  adjustment  under this Article V shall cause an  adjustment to the
Exercise Rate for outstanding Warrants as so adjusted.

                  (l)  DEFINITIONS.
                       -----------

                  "CAPITAL STOCK" means, with respect to any Person, any and all
shares,  interests,  partnership interests,  participations,  rights in or other
equivalents  (however  designated  and whether  voting or  non-voting)  of, such
Person's capital stock,  and any rights (other than debt securities  convertible
into Capital Stock),  warrants or options  exchangeable  for or convertible into
such capital stock, whether outstanding on the date hereof or issued hereafter.

                  "CONVERTIBLE PREFERRED STOCK" means any securities convertible
or exercisable or  exchangeable  into Common Stock,  whether  outstanding on the
date hereof or hereafter issued.

                  "CURRENT  MARKET VALUE" per share of Common Stock or any other
security  at any date  means (i) if the  security  is not  registered  under the
Exchange  Act, (a) the value of the  security,  determined  in good faith by the
board of directors of the Company and certified in a board resolution,  based on
the most recently completed  arm's-length  transaction between the Company and a
person other than an Affiliate of the Company and the closing of which occurs on
such date or shall have occurred  within the  six-month  period  preceding  such
date, or (b) if no such  transaction  shall have occurred on such date or within
such  six-month  period or if the board of  directors  of the Company  otherwise
elects,  the Fair Market Value of the security as  determined by a nationally or
regionally  recognized  independent financial expert (provided that, in the case
of the  calculation  of Current Market Value for  determining  the cash value of
fractional shares, any such determination within six months that is, in the good
faith  judgment  of  the  board  or  directors  of  the  Company,  a  reasonable
determination  of  value,  may be  utilized)  or  (ii)  (a) if the  security  is
registered under the Exchange Act, the average of the daily closing sales prices
of the securities for the 20 consecutive trading days immediately preceding such
date, or (b) if the security has been registered under the Exchange Act for less
than 20  consecutive  trading  days  before such date,  then the  average  daily
closing  sales  prices for all of the  trading  days  before such date for which
closing  sales  prices are  available,  in the case of each of (ii) (a) and (ii)
(b), as certified to the Warrant Agent by the President or any vice president or
the Chief  Financial  Officer of the Company.  The closing  sales price for each
such  trading day shall be: (A) in the case of a security  listed or admitted to
trading on any United States national  securities  exchange or quotation system,
the closing sales price,  regular way, on such day, or if no sale takes place on
such day,  the average of the closing bid and asked  prices on such day,  (B) in
the case of a security  not then listed or  admitted to trading on any  national
securities  exchange or quotation  system,  the last reported sale price on such
day, or if no sale takes  place on such day,  the average of the closing bid and
asked prices on such day, as reported by a reputable quotation source designated
by the  Company,  (C) in the case of a security  not then  listed or admitted to
trading on any national  securities exchange or quotation system and as to which
no such reported sale price or bid and asked prices are  available,  the average
of the  reported  high bid and low asked  prices on such day,  as  reported by a
reputable  quotation  service,  or a  newspaper  of general  circulation  in the
Borough of Manhattan,  The City and State of New York,  customarily published on
each business day,  designated by the Company,  or, if there shall be no bid and
asked prices on such day, the average of the high bid and low asked  prices,  as
so reported,  on the most recent day (not more than 30 days prior to the date in
question)  for which  prices have been so reported  and (D) if there are not bid
and asked prices reported during the 30 days prior to the date in question,  the
Current  Market  Value  shall  be  determined  as if  the  securities  were  not
registered under the Exchange Act.

                  "FAIR  MARKET  VALUE"  means,  with  respect  to any  asset or
property,  the sale value that would be obtained in an arm's length  transaction
between an  informed  and  willing  seller  under no  compulsion  to sell and an
informed  and  willing  buyer  under  no  compulsion  to buy.  Unless  otherwise
specified in this Agreement,  Fair Market Value shall be determined by the board
of  directors  of the  Company  acting in good faith and as of the date on which
such determination is made.

                  "INDEPENDENT   FINANCIAL   EXPERT"   means  a  nationally   or
regionally recognized investment banking or public accounting firm in the United
States  or,  if the  Company  believes  that an  investment  banking  or  public
accounting firm is generally not qualified to give such an opinion, a nationally
recognized  appraisal firm, in any case (i) which does not, and whose directors,
officers and employees or Affiliates do not, have a direct or indirect  material
financial  interest  for its  proprietary  account in the  Company or any of its
Affiliates  and (ii) which,  in the  judgment of the Board of  Directors  of the
Company, is otherwise independent with respect to the Company and its Affiliates
and qualified to perform the task for which it is to be engaged.

                  "TIME  OF  DETERMINATION"  means,  (i)  in  the  case  of  any
distribution  of securities or other property to existing  stockholders to which
paragraph (b) applies,  the time and date of the  determination  of stockholders
entitled to receive such securities or property or (ii) in the case of any other
issuance  and sale to which  paragraph  (b)  applies,  the time and date of such
issuance or sale.

                  (m) WHEN DE MINIMIS ADJUSTMENT MAY BE DEFERRED.  No adjustment
in the  Exercise  Rate need be made  unless  the  adjustment  would  require  an
increase of at least 1% in the Exercise Rate. Any adjustments  that are not made
shall be carried  forward and taken into account in any subsequent  adjustments.
All calculations under this Section 5 shall be made to the nearest 1/1000th of a
share, as the case may be.

                  SECTION  5.02.  FRACTIONAL  SHARES.  The  Company  will not be
required to issue  fractional  Warrant  Shares upon  exercise of the Warrants or
distribute Warrant Share  certificates that evidence  fractional Warrant Shares.
In the  event a  holder  is  required  by  Section  2.02(c)  to make a  Cashless
Exercise,  the  number of  Warrant  Shares  issuable  shall be rounded up to the
nearest whole number.  In addition,  in no event shall any holder of Warrants be
required to make any payment of a fractional cent. In lieu of fractional Warrant
Shares, there shall be paid to the registered holders of Warrant Certificates at
the time Warrants  evidenced  thereby are exercised as herein provided an amount
in cash equal to the same fraction of the Current  Market  Value,  as defined in
paragraph  (l) of  Section  5.01 of this  Agreement  per  Warrant  Share  on the
Business  Day  preceding  the  date the  Warrant  Certificates  evidencing  such
Warrants are surrendered for exercise. Such payments will be made by check or by
transfer to an account  maintained by such registered  holder with a bank in The
City of New York.  If any holder  surrenders  for exercise more than one Warrant
Certificate, the number of Warrant Shares deliverable to such holder may, at the
option of the Company,  be computed on the basis of the aggregate  amount of all
the Warrants exercised by such holder.

                  SECTION 5.03. CERTAIN DISTRIBUTIONS.  If at any time after the
Exercisability  Date, the Company grants,  issues or sells options,  convertible
securities,  or rights to purchase  Capital Stock,  warrants or other securities
pro rata to the record holders of any Common Stock  ("DISTRIBUTION  RIGHTS") or,
without  duplication,  makes any dividend or otherwise  makes any  distribution,
including (subject to applicable law) pursuant to any plan of liquidation (each,
a "DISTRIBUTION"),  on the Common Stock (whether in cash, property, evidences of
indebtedness or otherwise), then the Company shall grant, issue, sell or make to
each registered  holder of Warrants then outstanding the aggregate  Distribution
Rights  or  Distribution,  as the case may be,  which  such  holder  would  have
acquired if such holder had held the  maximum  number of shares of Common  Stock
acquirable  upon complete  exercise of such  holder's  Warrants  (regardless  of
whether the exercise of the Warrants is then suspended and without giving effect
to the  Cashless  Exercise  option)  immediately  before the record date for the
grant, issuance or sale of such Distribution Rights or Distribution, as the case
may be,  or, if there is no such  record  date,  the date as of which the record
holders of Common  Stock are to be  determined  for the grant,  issue or sale of
such Distribution Rights or Distribution, as the case may be.

                                   ARTICLE VI

                          CONCERNING THE WARRANT AGENT

                  SECTION 6.01.  WARRANT AGENT.  The Company hereby appoints The
Bank of New York as Warrant  Agent of the Company in respect of the Warrants and
the Warrant  Certificates upon the terms and subject to the conditions set forth
herein and in the Warrant Certificates;  and The Bank of New York hereby accepts
such  appointment.  The  Warrant  Agent  shall  have the  powers  and  authority
specifically  granted to and conferred upon it in the Warrant  Certificates  and
hereby and such further  powers and authority to act on behalf of the Company as
the Company  may  hereafter  grant to or confer  upon it and it shall  accept in
writing.  All of the  terms and  provisions  with  respect  to such  powers  and
authority  contained in the Warrant  Certificates are subject to and governed by
the terms and  provisions  hereof.  The Warrant Agent may act through agents and
shall not be  responsible  for the  misconduct  or  negligence of any such agent
appointed with due care.

                  SECTION 6.02.  CONDITIONS OF WARRANT AGENT'S OBLIGATIONS.  The
Warrant  Agent  accepts  its  obligations  set forth  herein  upon the terms and
conditions hereof and in the Warrant Certificates,  including the following,  to
all of which the Company agrees and to all of which the rights  hereunder of the
holders from time to time of the Warrant Certificates shall be subject:

                  (a) The Warrant Agent shall be entitled to  compensation to be
         agreed upon with the Company in writing for all services rendered by it
         and  the  Company  agrees  promptly  to pay  such  compensation  and to
         reimburse the Warrant Agent for its reasonable  out-of-pocket  expenses
         (including  reasonable fees and expenses of counsel)  incurred  without
         gross  negligence or willful  misconduct on its part in connection with
         the  services  rendered by it  hereunder.  The  Company  also agrees to
         indemnify the Warrant Agent and any  predecessor  Warrant Agent,  their
         directors,  officers, affiliates, agents and employees for, and to hold
         them and their directors,  officers,  affiliates,  agents and employees
         harmless  against,  any  loss,  liability  or  expense  of  any  nature
         whatsoever (including, without limitation, reasonable fees and expenses
         of counsel) incurred without gross negligence or willful  misconduct on
         the part of the Warrant Agent, arising out of or in connection with its
         acting as such Warrant  Agent  hereunder and its exercise of its rights
         and  performance of its obligations  hereunder.  The obligations of the
         Company  under this  Section  6.02 shall  survive the  exercise and the
         expiration of the Warrant  Certificates and the resignation and removal
         of the Warrant Agent.

                  (b) In acting under this Agreement and in connection  with the
         Warrant  Certificates,  the Warrant  Agent is acting solely as agent of
         the  Company  and does not assume any  obligation  or  relationship  of
         agency or trust for or with any of the owners or holders of the Warrant
         Certificates.

                  (c)  The  Warrant  Agent  may  consult  with  counsel  of  its
         selection  and any advice or written  opinion of such counsel  shall be
         full and complete authorization and protection in respect of any action
         taken,  suffered  or  omitted  by it  hereunder  in good  faith  and in
         accordance with such advice or opinion.

                  (d) The Warrant Agent shall be fully protected and shall incur
         no  liability  for or in respect  of any action  taken or omitted to be
         taken or thing suffered by it in reliance upon any Warrant Certificate,
         notice, direction, consent, certificate, affidavit, opinion of counsel,
         instruction,  statement or other paper or document  reasonably believed
         by it to be genuine and to have been  presented or signed by the proper
         parties.

                  (e) The Warrant Agent, and its officers, directors, affiliates
         and employees ("RELATED PARTIES"), may become the owners of, or acquire
         any Interest in, Warrant  certificates,  shares or other obligations of
         the Company  with the same rights that it or they would have if it were
         not the  Warrant  Agent  hereunder  and,  to the  extent  permitted  by
         applicable law, it or they may engage or be interested in any financial
         or other transaction with the Company and may act on, or as depositary,
         trustee or agent  for,  any  committee  or body of holders of shares or
         other  obligations  of the  Company  as  freely  as if it were  not the
         Warrant Agent  hereunder.  Nothing in this Agreement shall be deemed to
         prevent the Warrant  Agent or such  Related  Parties from acting in any
         other capacity for the Company.

                  (f) The  Warrant  Agent shall not be under any  liability  for
         interest  on, and shall not be  required  to invest,  any monies at any
         time received by it pursuant to any of the provisions of this Agreement
         or of the Warrant Certificates.

                  (g) The Warrant Agent shall not be under any responsibility in
         respect of the  validity of this  Agreement  (or any term or  provision
         hereof) or the execution and delivery  hereof (except the due execution
         and delivery hereof by the Warrant Agent) or in respect of the validity
         or  execution  of any Warrant  Certificate  (except its  authentication
         thereof).

                  (h) The recitals and other statements  contained herein and in
         the   Warrant   Certificates   (except  as  to  the   Warrant   Agent's
         authentication thereon) shall be taken as the statements of the Company
         and the Warrant Agent assumes no responsibility  for the correctness of
         the same. The Warrant Agent does not make any  representation as to the
         validity or sufficiency of this Agreement or the Warrant  Certificates,
         except for its due execution and delivery of this Agreement;  provided,
         however,  that the  Warrant  Agent shall not be relieved of its duty to
         authenticate the Warrant  Certificates as authorized by this Agreement.
         The Warrant Agent shall not be  accountable  for the use or application
         by the Company of the Proceeds of the exercise of any Warrant.

                  (i) Before the Warrant Agent acts or refrains from acting with
         respect  to  any  matter  contemplated  by  this  Supplemental  Warrant
         Agreement, it may require:

(1)               an Officers' Certificate (as defined in the Indenture) stating
                  on behalf of the Company  that, in the opinion of the signers,
                  all  conditions  precedent,  if  any,  provided  for  in  this
                  Supplemental Warrant Agreement relating to the proposed action
                  have been complied with; and

                           (2) if  reasonably  necessary in the sole judgment of
                  the  Warrant  Agent,  an opinion of  counsel  for the  Company
                  stating  that,  in the  opinion  of  such  counsel,  all  such
                  conditions  precedent  have been  complied  with provided that
                  such matter is one customarily opined on by counsel.

                  Each  Officers'  Certificate  or, if requested,  an opinion of
counsel with respect to compliance with a condition or covenant  provided for in
this Supplemental Warrant Agreement shall include:

                  (1) a statement  that the person  making such  certificate  or
         opinion has read such covenant or condition;

                  (2) a  brief  statement  as to the  nature  and  scope  of the
         examination  or  investigation  upon which the  statements  or opinions
         contained in such certificate or opinion are based;

                  (3) a statement that, in the opinion of such person, he or she
         has made such  examination or  investigation  as is necessary to enable
         him or her to  express  an  informed  opinion as to whether or not such
         covenant or condition has been complied with; and

                  (4) a  statement  as to whether or not, in the opinion of such
         person, such condition or covenant has been complied with.

                  (j) The  Warrant  Agent  shall be  obligated  to perform  such
duties as are specifically set forth herein and in the Warrant Certificates, and
no  implied  duties or  obligations  shall be read into  this  Agreement  or the
Warrant  Certificates  against the Warrant Agent. The Warrant Agent shall not be
accountable or be under any duty or responsibility for the use by the Company of
any of the Warrant Certificates authenticated by the Warrant Agent and delivered
by it to the Company pursuant to this Agreement. The Warrant Agent shall have no
duty or  responsibility in case of any default by the Company in the performance
of its covenants or agreements  contained in the Warrant  Certificates or in the
case of the receipt of any written demand from a holder of a Warrant Certificate
with respect to such default, including,  without limiting the generality of the
foregoing,  any duty or  responsibility  to initiate or attempt to initiate  any
proceedings  at law or otherwise  or, except as provided in Section 7.02 hereof,
to make any demand upon the Company.

                  (k) Unless otherwise  specifically provided herein, any order,
certificate,  notice, request, direction or other communication from the Company
made or given under any  provision  of this  Agreement  shall be  sufficient  if
signed by its chairman of the board of directors,  its president, its treasurer,
its  controller  or any  vice  president  or  its  secretary  or  any  assistant
secretary.

                  (l) The Warrant Agent shall have no  responsibility in respect
         of any adjustment pursuant to Article V hereof.

                  (m)  The  Company  agrees  that  it  will  perform,   execute,
acknowledge and deliver,  or cause to be performed,  executed,  acknowledged and
delivered,  all such further and other acts,  instruments  and assurances as may
reasonably  be required by the Warrant  Agent for the carrying out or performing
by the Warrant Agent of the provisions of this Agreement.

                  (n) The Warrant  Agent is hereby  authorized  and  directed to
accept  written  instructions  with  respect  to the  performance  of its duties
hereunder from any one of the chairman of the board of directors, the president,
the treasurer, the controller,  any vice president or the secretary or assistant
secretary  of the  Company  or any other  officer  or  official  of the  Company
reasonably  believed to be authorized to give such  instructions and to apply to
such officers or officials  for advice or  instructions  in connection  with its
duties,  and it shall not be liable for any action taken or suffered to be taken
by it in good faith in accordance with  instructions  with respect to any matter
arising in connection with the Warrant  Agent's duties and  obligations  arising
under  this  Agreement.  Such  application  by the  Warrant  Agent  for  written
instructions from the Company may, at the option of the Warrant Agent, set forth
in writing any action  proposed to be taken or omitted by the Warrant Agent with
respect to its duties or  obligations  under this  Agreement  and the date on or
after which such action shall be taken and the Warrant Agent shall not be liable
for any action taken or omitted in  accordance  with a proposal  included in any
such application on or after the date specified therein (which date shall be not
less than 10 Business Days after the Company  receives such  application  unless
the Company  consents to a shorter  period),  provided that (i) such application
includes a  statement  to the  effect  that it is being  made  pursuant  to this
paragraph  (n) and that unless  objected to prior to such date  specified in the
application,  the  Warrant  Agent  will not be  liable  for any such  action  or
omission to the extent set forth in this  paragraph (n) and (ii) prior to taking
or  omitting  any such  action,  the  Warrant  Agent  has not  received  written
instructions objecting to such proposed action or omission.

                  (o)  Whenever  in the  performance  of its  duties  under this
Agreement the Warrant  Agent shall deem it necessary or desirable  that any fact
or matter be proved or  established  by the Company prior to taking or suffering
any action  hereunder,  such fact or matter  (unless  other  evidence in respect
thereof  be herein  specifically  prescribed)  may be deemed to be  conclusively
proved and  established by a certificate  signed on behalf of the Company by any
one of  the  chairman  of the  board  of  directors,  CEO,  the  president,  the
treasurer,  the controller,  any executive vice president, any vice president or
the secretary or any assistant  secretary of the Company or any other officer or
official  of the  Company  reasonably  believed  to be  authorized  to give such
instructions and delivered to the Warrant Agent;  and such certificate  shall be
full authorization to the Warrant Agent for any action taken or suffered in good
faith by it under  the  provisions  of this  Agreement  in  reliance  upon  such
certificate.

                  (p) The Warrant  Agent shall not be required to risk or expend
         its  own  funds  in the  performance  of  its  obligations  and  duties
         hereunder.

                  SECTION 6.03.  RESIGNATION AND APPOINTMENT OF SUCCESSOR.
                                 ----------------------------------------

                  (a) The Company  agrees,  for the benefit of the holders  from
time to time of the  Warrant  Certificates,  that there  shall at all times be a
Warrant Agent hereunder.

                  (b) The Warrant  Agent may at any time resign as Warrant Agent
by  giving  written  notice  to the  Company  of  such  intention  on its  part,
specifying  the date on which its desired  resignation  shall become  effective;
provided,  however,  that such date  shall be at least 60 days after the date on
which such notice is given unless the Company agrees to accept less notice. Upon
receiving  such notice of  resignation,  the Company  shall  promptly  appoint a
successor  Warrant Agent,  qualified as provided in Section 6.03(d)  hereof,  by
written  instrument  in duplicate  signed on behalf of the Company,  one copy of
which shall be  delivered  to the  resigning  Warrant  Agent and one copy to the
successor Warrant Agent. As provided in Section 6.03(d) hereof, such resignation
shall become effective upon the earlier of (x) the acceptance of the appointment
by the  successor  Warrant  Agent or (y) 60 days after receipt by the Company of
notice of such resignation. The Company may, at any time and for any reason, and
shall,  upon any event set forth in the next  succeeding  sentence,  remove  the
Warrant  Agent and appoint a successor  Warrant  Agent by written  instrument in
duplicate,  specifying  such  removal  and the date on which it is  intended  to
become  effective,  signed on behalf of the Company,  one copy of which shall be
delivered  to the  Warrant  Agent being  removed  and one copy to the  successor
Warrant  Agent.  The  Warrant  Agent shall be removed as  aforesaid  if it shall
become incapable of acting,  or shall be adjudged a bankrupt or insolvent,  or a
receiver of the Warrant  Agent or of its  property  shall be  appointed,  or any
public  officer shall take charge or control of it or of its property or affairs
for the purpose of rehabilitation,  conservation or liquidation.  Any removal of
the Warrant Agent and any appointment of a successor  Warrant Agent shall become
effective  upon  acceptance of  appointment  by the  successor  Warrant Agent as
provided in Section  6.03(d).  As soon as practicable  after  appointment of the
successor Warrant Agent, the Company shall cause written notice of the change in
the Warrant Agent to be given to each of the registered  holders of the Warrants
in the manner provided for in Section 7.04 hereof.

                  (c) Upon  resignation or removal of the Warrant Agent,  if the
Company  shall fail to appoint a successor  Warrant  Agent within a period of 60
days after receipt of such notice of resignation or removal,  then the holder of
any Warrant  Certificate  or the retiring  Warrant Agent may apply to a court of
competent  jurisdiction for the appointment of a successor to the Warrant Agent.
Pending  appointment of a successor to the Warrant Agent,  either by the Company
or by such a court,  the duties of the Warrant Agent shall be carried out by the
Company.

                  (d) Any  successor  Warrant  Agent,  whether  appointed by the
Company  or by a  court,  shall  be a bank or trust  company  in good  standing,
incorporated under the laws of the United States of America or any State thereof
and having,  at the time of its  appointment,  a combined  capital surplus of at
least $50 million. Such successor Warrant Agent shall execute and deliver to its
predecessor  and  to  the  Company  an  instrument  accepting  such  appointment
hereunder and all the provisions of this Agreement, and thereupon such successor
Warrant Agent, without any further act, deed or conveyance,  shall become vested
with  all  the  rights,  powers,  duties  and  obligations  of  its  predecessor
hereunder,  with like effect as if originally  named as Warrant Agent hereunder,
and such  predecessor  shall  thereupon  become  obligated  to (i)  transfer and
deliver,  and such  successor  Warrant  Agent shall be entitled to receive,  all
securities,  records  or  other  property  on  deposit  with  or  held  by  such
predecessor as Warrant Agent hereunder and (ii) upon payment of the amounts then
due it pursuant to Section 6.02(a) hereof,  pay over, and such successor Warrant
Agent shall be entitled to  receive,  all monies  deposited  with or held by any
predecessor Warrant Agent hereunder.

                  (e) Any  corporation  or bank  into  which the  Warrant  Agent
hereunder may be merged or converted,  or any corporation or bank with which the
Warrant Agent may be consolidated, or any corporation or bank resulting from any
merger, conversion or consolidation to which the Warrant Agent shall be a party,
or any  corporation  or bank to which the Warrant  Agent shall sell or otherwise
transfer all or substantially all of its corporate trust business,  shall be the
successor  to the  Warrant  Agent  under  this  Agreement  (provided  that  such
corporation  or bank shall be qualified as  aforesaid)  without the execution or
filing of any  document  or any  further  act on the part of any of the  parties
hereto.

                  (f) No Warrant Agent under this Supplemental Warrant Agreement
shall be personally  liable for any action or omission of any successor  Warrant
Agent.

                                   ARTICLE VII

                                  MISCELLANEOUS

                  SECTION 7.01.  AMENDMENT.  This Agreement and the terms of the
Warrants  may be amended by the  Company  and the  Warrant  Agent,  without  the
consent of the holder of any Warrant Certificate,  for the purpose of curing any
ambiguity,   or  of  curing,   correcting  or  supplementing  any  defective  or
inconsistent provision contained herein or therein, or to effect any assumptions
of the Company's obligations hereunder and thereunder by a successor corporation
under the  circumstances  described  in Section  5.01(d)  hereof or in any other
manner which the Company may deem  necessary  or  desirable  and which shall not
adversely affect the interests of the holders of the Warrant Certificates.

                  The  Company  and the  Warrant  Agent  may  amend,  modify  or
supplement  this  Agreement  and the  terms  of the  Warrants,  and  waivers  to
departures  from the terms hereof and thereof may be given,  with the consent of
the Requisite  Warrant  Holders (as defined below) for the purpose of adding any
provision to or changing in any manner or  eliminating  any of the provisions of
this  Agreement  or  modifying  in any manner  the rights of the  holders of the
outstanding  Warrants.  "REQUISITE WARRANT HOLDERS" means (i) in the case of any
amendment, modification,  supplement or waiver affecting only Warrant Holders as
such,  holders  of a  majority  in number of the  outstanding  Warrants,  voting
separately  as a  class,  or (ii) in the  case of any  amendment,  modification,
supplement or waiver affecting Warrant Holders,  a majority in number of Warrant
Shares  represented  by the Warrants  that would be issuable  assuming  exercise
thereof at the time such amendment, modification,  supplement or waiver is voted
upon. Notwithstanding any other provision of this Agreement, the Warrant Agent's
consent must be obtained  regarding any supplement or amendment which alters the
Warrant  Agent's  rights  or  duties  (it being  expressly  understood  that the
foregoing  shall not be in  derogation of the right of the Company to remove the
Warrant  Agent in  accordance  with  Section 6.03  hereof).  For purposes of any
amendment, modification or waiver hereunder, Warrants held by the Company or any
of its Affiliates shall be disregarded.

                  Any  modification  or amendment  made in accordance  with this
Agreement  will be conclusive  and binding on all present and future  holders of
Warrant  Certificates whether or not they have consented to such modification or
amendment  or  waiver  and  whether  or not  notation  of such  modification  or
amendment is made upon such Warrant Certificates.  Any instrument given by or on
behalf of any holder of a Warrant  Certificate in connection with any consent to
any  modification  or amendment will be conclusive and binding on all subsequent
holders of such Warrant Certificate.

                  SECTION  7.02.  NOTICES AND DEMANDS TO THE COMPANY AND WARRANT
AGENT. If the Warrant Agent shall receive any notice or demand  addressed to the
Company by the holder of a Warrant Certificate pursuant to the provisions hereof
or of the Warrant  Certificates,  the Warrant Agent shall promptly  forward such
notice or demand to the Company.

                  SECTION  7.03.  ADDRESSES  FOR  NOTICES  TO  PARTIES  AND  FOR
TRANSMISSION OF DOCUMENTS.  All notices hereunder to the parties hereto shall be
deemed to have been given when sent by certified  or  registered  mail,  postage
prepaid,  or by facsimile  transmission,  confirmed by first class mail, postage
prepaid, addressed to any party hereto as follows:

         To the Company:

                     Pathnet Telecommunications, Inc.
                     1015 31st Street, N.W.
                     Washington, D.C.  20007
                  Facsimile:  (202) 625-7369
                     Attention: General Counsel

         with copies to:

                     Covington & Burling
                     1201 Pennsylvania Avenue, N.W.
                     Washington, D.C. 20004
                     Facsimile:  202-662-6291
                     Attention:  Bruce S. Wilson

         To the Warrant Agent:

                     The Bank of New York
                     101 Barclay Street
                     Floor 21 West
                     New York, New York  10286
                     Facsimile No.:  (212) 815-5915
                     Attention:  Corporate Trust Trustee Administration

or at any other address of which either of the foregoing shall have notified the
other in writing.

                  SECTION  7.04.  NOTICES  TO  HOLDERS.  Notices  to  holders of
Warrants  shall be mailed to such  holders at the  addresses  of such holders as
they appear in the Warrant Register. Any such notice shall be sufficiently given
if sent by first-class mail, postage prepaid.

                  SECTION 7.05.  APPLICABLE LAW. THIS AGREEMENT AND EACH WARRANT
                                 --------------
CERTIFICATE ISSUED HEREUNDER SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE
WITH THE LAWS OF THE STATE OF NEW YORK.

                  SECTION 7.06.  PERSONS HAVING RIGHTS UNDER AGREEMENT.  Nothing
in this Agreement expressed or implied and nothing that may be inferred from any
of the provisions hereof is intended, or shall be construed,  to confer upon, or
give to, any person or  corporation  other than the Company,  the Warrant Agent,
the holders of the Warrant Certificates and, with respect to Sections 4.03, 4.04
and 4.05, the holders of Warrant Shares issued pursuant to Warrants,  any right,
remedy  or claim  under  or by  reason  of this  Agreement  or of any  covenant,
condition,  stipulation,  promise or agreement hereof; and all covenants (except
for Section 4.03 which shall be for the benefit of all holders of Warrant Shares
issued pursuant to Warrants), conditions,  stipulations, promises and agreements
in this Agreement  contained shall be for the sole and exclusive  benefit of the
Company and the  Warrant  Agent and their  successors  and of the holders of the
Warrant Certificates.

                  SECTION 7.07.  HEADINGS. The descriptive headings of the
                                 --------
several  Articles and Sections of this  Agreement  are inserted for  convenience
only and shall not control or affect the meaning or  construction  of any of the
provisions hereof.

                  SECTION 7.08.  COUNTERPARTS. This Agreement may be executed in
                                 ------------
any number of  counterparts,  each of which so executed shall be deemed to be an
original;  but such counterparts shall together  constitute but one and the same
instrument.

                  SECTION  7.09.  INSPECTION  OF  AGREEMENT.   A  copy  of  this
Agreement  shall be available  during  regular  business  hours at the principal
corporate trust office of the Warrant Agent, for inspection by the holder of any
Warrant  Certificate.  The Warrant  Agent may require  such holder to submit his
Warrant Certificate for inspection by it.

                  SECTION  7.10.  AVAILABILITY  OF EQUITABLE  REMEDIES.  Since a
breach of the provisions of this  Agreement  could not adequately be compensated
by money  damages,  holders of Warrants  shall be  entitled,  in addition to any
other right or remedy  available  to them,  to an  injunction  restraining  such
breach or a threatened breach and to specific  performance of any such provision
of this  Agreement,  and in  either  case no bond or  other  security  shall  be
required  in  connection  therewith,  and the  parties  hereby  consent  to such
injunction and to the ordering of specific performance.

                  SECTION 7.11. OBTAINING OF GOVERNMENTAL APPROVALS. The Company
will from time to time take all action  required  to be taken by it which may be
necessary  to  obtain  and keep  effective  any and all  permits,  consents  and
approvals of  governmental  agencies and authorities and securities acts filings
under United  States  Federal and state laws, if  applicable,  and the rules and
regulations of all stock exchanges on which the Warrants are listed which may be
or become  requisite in connection with (i) the issuance,  sale,  transfer,  and
delivery to the Company of the Warrant  Certificates,  (ii) the  exercise of the
Warrants or (iii) the  issuance,  sale,  transfer and delivery by the Company of
the Warrant Shares issued to the holders of the Warrants, each upon the exercise
of the Warrants by the holders of Warrants.


<PAGE>


                  IN WITNESS  WHEREOF,  this Agreement has been duly executed by
the parties hereto as of the day and year first above written.

                                    PATHNET TELECOMMUNICATIONS, INC.


                                    By: /s/ W. R. Smedberg V
                                       ---------------------------------------
                                       Name:
                                       Title:


                                    THE BANK OF NEW YORK,
                                      Warrant Agent


                                     By:/s/ Terence Rawlins
                                        -------------------------------------
                                        Name: Terence Rawlins
                                        Title: Assistant Vice President






<PAGE>


                                      A-12
                                       A-1
                                                                       EXHIBIT A

                          [FORM OF WARRANT CERTIFICATE]

                                     [FACE]

THE SECURITIES  EVIDENCED  HEREBY HAVE NOT BEEN REGISTERED  UNDER THE SECURITIES
ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), OR ANY STATE OR OTHER SECURITIES
LAWS.  NEITHER THIS  SECURITY NOR ANY  INTEREST OR  PARTICIPATION  HEREIN MAY BE
REOFFERED,  SOLD,  ASSIGNED,  TRANSFERRED,   PLEDGED,  ENCUMBERED  OR  OTHERWISE
DISPOSED OF IN THE ABSENCE OF SUCH  REGISTRATION  OR UNLESS SUCH  TRANSACTION IS
EXEMPT FROM, OR NOT SUBJECT TO, THE REGISTRATION  REQUIREMENTS OF THE SECURITIES
ACT.  HEDGING  TRANSACTIONS  INVOLVING THIS SECURITY MAY NOT BE CONDUCTED UNLESS
SUCH  TRANSACTIONS  ARE CONDUCTED IN  COMPLIANCE  WITH THE  SECURITIES  ACT. THE
HOLDER OF THIS SECURITY BY ITS ACCEPTANCE HEREOF (1) REPRESENTS THAT (A) IT IS A
"QUALIFIED  INSTITUTIONAL  BUYER" (AS DEFINED IN RULE 144A UNDER THE  SECURITIES
ACT)  OR (B) IT IS NOT A U.S.  PERSON  AND  IS  ACQUIRING  THIS  SECURITY  IN AN
"OFFSHORE  TRANSACTION"  PURSUANT TO REGULATION S UNDER THE SECURITIES  ACT, (2)
AGREES  THAT IT WILL NOT PRIOR TO (X) THE DATE  WHICH IS TWO YEARS (OR A SHORTER
PERIOD AS MAY BE PRESCRIBED BY RULE 144(K) (OR ANY SUCCESSOR  PROVISION THEREOF)
UNDER THE SECURITIES  ACT) AFTER THE LATER OF THE ORIGINAL ISSUE DATE HEREOF (OR
OF  ANY  PREDECESSOR  OF  THIS  SECURITY)  OR THE  LAST  DAY  ON  WHICH  PATHNET
TELECOMMUNICATIONS, INC. OR ANY OF ITS AFFILIATES WAS THE OWNER OF THIS SECURITY
OR ANY  PREDECESSOR  OF THIS SECURITY AND (Y) SUCH LATER DATE, IF ANY, AS MAY BE
REQUIRED BY APPLICABLE LAW (THE "RESALE RESTRICTION  TERMINATION DATE"),  OFFER,
SELL   OR   OTHERWISE   TRANSFER   THIS   SECURITY   EXCEPT   (A)   TO   PATHNET
TELECOMMUNICATIONS,  INC.  OR  ANY  OF  ITS  SUBSIDIARIES,  (B)  PURSUANT  TO  A
REGISTRATION  STATEMENT  WHICH HAS BEEN DECLARED  EFFECTIVE UNDER THE SECURITIES
ACT, (C) FOR SO LONG AS THE SECURITIES ARE ELIGIBLE FOR RESALE  PURSUANT TO RULE
144A, TO A PERSON IT REASONABLY BELIEVES IS A "QUALIFIED INSTITUTIONAL BUYER" AS
DEFINED IN RULE 144A UNDER THE SECURITIES ACT THAT PURCHASES FOR ITS OWN ACCOUNT
OR FOR THE  ACCOUNT OF A QUALIFIED  INSTITUTIONAL  BUYER TO WHOM NOTICE IS GIVEN
THAT THE TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, (D) PURSUANT TO OFFERS
AND SALES TO NON-U.S.  PERSONS THAT OCCUR  OUTSIDE THE UNITED  STATES WITHIN THE
MEANING  OF  REGULATION  S UNDER THE  SECURITIES  ACT,  PURSUANT  TO RULE 904 OF
REGULATION  S,  OR  (E)  PURSUANT  TO  ANOTHER  AVAILABLE   EXEMPTION  FROM  THE
REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND (3) AGREES THAT IT WILL GIVE
TO EACH PERSON TO WHOM THIS SECURITY IS  TRANSFERRED A NOTICE  SUBSTANTIALLY  TO
THE EFFECT OF THIS LEGEND; PROVIDED THAT THE COMPANY AND THE WARRANT AGENT SHALL
HAVE THE RIGHT PRIOR TO ANY SUCH OFFER,  SALE OR TRANSFER PURSUANT TO CLAUSE (E)
TO REQUIRE THE  DELIVERY OF AN OPINION OF COUNSEL,  CERTIFICATION  AND/OR  OTHER
INFORMATION  SATISFACTORY  TO EACH OF THEM. IN  CONNECTION  WITH ANY TRANSFER OF
THESE SECURITIES WITHIN THE TIME PERIOD REFERRED TO ABOVE, THE HOLDER MUST CHECK
THE  APPROPRIATE  BOX SET FORTH ON THE REVERSE HEREOF  RELATING TO THE MANNER OF
SUCH TRANSFER AND SUBMIT THIS CERTIFICATE TO THE WARRANT AGENT. THIS LEGEND WILL
BE  REMOVED  UPON  THE  REQUEST  OF THE  HOLDER  AFTER  THE  RESALE  RESTRICTION
TERMINATION  DATE. AS USED HEREIN,  THE TERMS  "OFFSHORE  TRANSACTION,"  "UNITED
STATES"  AND  "U.S.  PERSON"  HAVE  THE  RESPECTIVE  MEANINGS  GIVEN  TO THEM BY
REGULATION S UNDER THE SECURITIES ACT.


<PAGE>


                                                                      CUSIP #[ ]

No.  [      ]                                                   [     ] Warrants

                               WARRANT CERTIFICATE

                        PATHNET TELECOMMUNICATIONS, INC.

                  This Warrant  Certificate  certifies  that [ ], or  registered
assigns,  is the registered  holder of [ ] Warrants (the "WARRANTS") to purchase
shares of Common Stock, par value $0.01 per share, issuable upon exercise of the
Warrants (the "WARRANT SHARES") of PATHNET TELECOMMUNICATIONS,  INC., a Delaware
corporation  (the  "COMPANY,"  which term includes its  successors and assigns).
Each Warrant  entitles the holder to purchase  from the Company at any time from
9:00 a.m.  New York City time on or after the  Exercisability  Date  until  5:00
p.m., New York City time, on April 15, 2008 (the "EXPIRATION  DATE"), 3.19 fully
paid,  registered and  non-assessable  Warrant Shares,  subject to adjustment as
provided  in Article V of the  Supplemental  Warrant  Agreement,  at an exercise
price of $0.01 for each share purchased (the "EXERCISE  PRICE");  upon surrender
of this Warrant  Certificate and payment of the Exercise Price (i) in cash or by
certified or official  bank check,  (ii) by a Cashless  Exercise or (iii) by any
combination of (i) and (ii), at any office or agency maintained for that purpose
by the Company (the "WARRANT  EXERCISE  OFFICE"),  subject to the conditions set
forth herein and in the  Supplemental  Warrant  Agreement.  For purposes of this
Warrant, a "CASHLESS EXERCISE" shall mean an exercise of a Warrant in accordance
with the immediately following two sentences. To effect a Cashless Exercise, the
holder may exercise a Warrant or Warrants  without payment of the Exercise Price
in cash by  surrendering  such Warrant or Warrants  (represented  by one or more
Warrant Certificates) and in exchange therefor,  receiving such number of shares
of Common  Stock  equal to the  product  of (1) that  number of shares of Common
Stock for which such  Warrant or  Warrants  are  exercisable  and which would be
issuable in the event of an exercise with payment of the Exercise  Price and (2)
the  Cashless  Exercise  Ratio.  The  "CASHLESS  EXERCISE  RATIO"  shall equal a
fraction,  the  numerator  of which is the excess of the  Current  Market  Value
(calculated  as set forth in this Warrant) per share of Common Stock on the date
of exercise over the Exercise  Price per share of Common Stock as of the date of
exercise and the  denominator  of which is the Current Market Value per share of
Common Stock on the date of exercise.  Upon  surrender of a Warrant  Certificate
representing  more than one Warrant in  connection  with the holder's  option to
elect a Cashless  Exercise,  the holder must  specify the number of Warrants for
which such Warrant  Certificate is to be exercised (without giving effect to the
Cashless Exercise).  All provisions of the Supplemental  Warrant Agreement shall
be applicable with respect to a Cashless  Exercise of a Warrant  Certificate for
less than the full number of Warrants  represented  thereby.  Capitalized  terms
used herein without being defined herein shall have the definitions  ascribed to
such terms in the Supplemental Warrant Agreement.

                  "CURRENT  MARKET VALUE" per share of Common Stock or any other
security  at any date  means (i) if the  security  is not  registered  under the
Exchange  Act, (a) the value of the  security,  determined  in good faith by the
board of directors of the Company and certified in a board resolution,  based on
the most recently completed  arm's-length  transaction between the Company and a
person other than an Affiliate of the Company and the closing of which occurs on
such date or shall have occurred  within the  six-month  period  preceding  such
date, or (b) if no such  transaction  shall have occurred on such date or within
such  six-month  period or if the board of  directors  of the Company  otherwise
elects,  the Fair Market Value of the security as  determined by a nationally or
regionally recognized Independent Financial Expert (as defined herein) (PROVIDED
that, in the case of the calculation of Current Market Value for determining the
cash value of fractional shares,  any such determination  within six months that
is, in the good faith  judgment  of the board of  directors  of the  Company,  a
reasonable  determination of value, may be utilized) or (ii) (a) if the security
is  registered  under the Exchange  Act, the average of the daily  closing sales
prices  of the  securities  for  the 20  consecutive  trading  days  immediately
preceding  such  date,  or (b) if the  security  has been  registered  under the
Exchange Act for less than 20  consecutive  trading days before such date,  then
the average  daily  closing sales prices for all of the trading days before such
date for which closing sales prices are  available,  in the case of each of (ii)
(a) and (ii) (b), as certified to the Warrant Agent by the President or any vice
president or the Chief Financial Officer of the Company. The closing sales price
for each such  trading  day shall be:  (A) in the case of a  security  listed or
admitted  to  trading on any  United  States  national  securities  exchange  or
quotation  system,  the closing sales price,  regular way, on such day, or if no
sale takes place on such day, the average of the closing bid and asked prices on
such day,  (B) in the case of a security  not then listed or admitted to trading
on any national  securities exchange or quotation system, the last reported sale
price on such day,  or if no sale takes  place on such day,  the  average of the
closing bid and asked  prices on such day, as reported by a reputable  quotation
source designated by the Company,  (C) in the case of a security not then listed
or admitted to trading on any national  securities  exchange or quotation system
and as to  which  no such  reported  sale  price  or bid and  asked  prices  are
available,  the average of the  reported  high bid and low asked  prices on such
day, as reported by a reputable  quotation  service,  or a newspaper  of general
circulation  in the  Borough  of  Manhattan,  The  City and  State of New  York,
customarily  published on each Business Day,  designated by the Company,  or, if
there shall be no bid and asked  prices on such day, the average of the high bid
and low asked prices,  as so reported,  on the most recent day (not more than 30
days prior to the date in  question)  for which prices have been so reported and
(D) if there are not bid and asked prices  reported  during the 30 days prior to
the date in question,  the Current  Market Value shall be  determined  as if the
securities were not registered under the Exchange Act.

                  "EXERCISE EVENT" means, with respect to each Warrant, the date
of the occurrence of the earliest of: (i) the time immediately prior to a Change
of Control (as such term is defined in the Indenture); (ii)(a) the 180th day (or
such earlier date as determined by the Company in its sole discretion) following
the closing of an Initial Public Equity Offering (as defined herein) or (b) upon
the  closing  of an  Initial  Public  Equity  Offering,  but only in  respect of
Warrants, if any, required to be exercised to permit the holders thereof to sell
Warrant Shares pursuant to their respective  registration rights, (iii) the time
when a class of  equity  securities  of the  Company  is  listed  on a  national
securities exchange or authorized for quotation on the Nasdaq National Market or
is otherwise  subject to registration  under the Exchange Act, or (iv) April 30,
2001.

                  "INDEPENDENT   FINANCIAL   EXPERT"   means  a  nationally   or
regionally recognized investment banking or public accounting firm in the United
States  or,  if the  Company  believes  that an  investment  banking  or  public
accounting firm is generally not qualified to give such an opinion, a nationally
recognized  appraisal firm, in any case (i) which does not, and whose directors,
officers and employees or Affiliates do not, have a direct or indirect  material
financial  interest  for its  proprietary  account in the  Company or any of its
Affiliates  and (ii) which,  in the  judgment of the Board of  Directors  of the
Company, is otherwise independent with respect to the Company and its Affiliates
and qualified to perform the task for which it is to be engaged.

                  The Company has initially  designated the principal  corporate
trust office of the Warrant Agent in the Borough of  Manhattan,  The City of New
York, as the initial Warrant Agent Office.  The number of shares of Common Stock
issuable  upon  exercise  of  the  Warrants  ("Exercise  Rate")  is  subject  to
adjustment  upon the occurrence of certain events set forth in the  Supplemental
Warrant Agreement.

                  Any Warrants not exercised on or prior to 5:00 p.m.,  New York
City time, on April 15, 2008 shall thereafter be void.

                  If the Company, in a single transaction or through a series of
related transactions,  consolidates with or merges with or into, or sells all or
substantially  all of its property and assets to,  another  Person (other than a
subsidiary of the Company)  solely for cash,  the holders of Warrants  which are
then exercisable shall be entitled to receive  distributions on the date of such
event on an equal  basis  with  holders  of  shares of  Capital  Stock (or other
securities  issuable  upon exercise of the Warrants) as if the Warrants had been
exercised  immediately  prior to such event less the  aggregate  Exercise  Price
therefor.

                  Reference  is hereby  made to the  further  provisions  on the
reverse hereof which  provisions  shall for all purposes have the same effect as
though fully set forth at this place.

                  This   Warrant   Certificate   shall   not  be  valid   unless
authenticated  by the Warrant  Agent,  as such term is used in the  Supplemental
Warrant Agreement.

                  THIS WARRANT CERTIFICATE SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.



<PAGE>


                  WITNESS  the  facsimile  seal  of the  Company  and  facsimile
signatures of its duly authorized officers.


                                           PATHNET TELECOMMUNICATIONS, INC.



                                          By:_________________________________
                                             Name:
                                             Title:

Attest:


By:_________________________________
     Name:
     Title:

Certificate of Authentication:
This is one of the Warrants
referred to in the within
mentioned Supplemental Warrant Agreement:

Dated:

THE BANK OF NEW YORK,
         Warrant Agent


By:__________________________________
     Authorized Signatory





<PAGE>


                          [FORM OF WARRANT CERTIFICATE]

                                    [REVERSE]

                        PATHNET TELECOMMUNICATIONS, INC.

                  The Warrants evidenced by this Warrant Certificate are part of
a duly authorized  issue of Warrants  expiring at 5:00 p.m., New York City time,
on April 15, 2008 (the "EXPIRATION DATE"), each of which represents the right to
purchase  at any time on or after the  Exercisability  Date (as  defined  in the
Supplemental  Warrant  Agreement)  and on or prior to the  Expiration  Date 3.19
Shares,  subject  to  adjustment  as  set  forth  in  the  Supplemental  Warrant
Agreement.  The Warrants are issued pursuant to a Supplemental Warrant Agreement
dated as of March 30, 2000 (the "SUPPLEMENTAL WARRANT AGREEMENT"), duly executed
and  delivered  by the  Company  to The Bank of New  York,  Warrant  Agent  (the
"WARRANT AGENT"), which Supplemental Warrant Agreement is hereby incorporated by
reference in and made a part of this  instrument and is hereby referred to for a
description  of the  rights,  limitation  of  rights,  obligations,  duties  and
immunities  thereunder  of the Warrant  Agent,  the Company and the holders (the
words "HOLDERS" or "HOLDER" meaning the registered holders or registered holder)
of the Warrants.

                  Warrants may be exercised by (i)  surrendering  at any Warrant
Agent Office this Warrant  Certificate with the form of Election to Exercise set
forth hereon duly completed and executed and (ii) to the extent such exercise is
not being  effected  through a Cashless  Exercise  by paying in full the Warrant
Exercise Price for each such Warrant exercised and any other amounts required to
be paid pursuant to the Supplemental Warrant Agreement.

                  If all of the items  referred  to in the last  sentence of the
preceding paragraph are received by the Warrant Agent at or prior to 11:00 a.m.,
New York City time, on a Business Day, the exercise of the Warrant to which such
items relate will be effective on such Business Day. If any items referred to in
the last sentence of the preceding  paragraph are received after 11:00 a.m., New
York City time,  on a Business  Day,  the exercise of the Warrants to which such
item relates will be deemed to be effective on the next succeeding Business Day.
Notwithstanding  the foregoing,  in the case of an exercise of Warrants on April
15, 2008, if all of the items  referred to in the last sentence of the preceding
paragraph are received by the Warrant  Agent at or prior to 5:00 p.m.,  New York
City time, on such  Expiration  Date, the exercise of the Warrants to which such
items relate will be effective on the Expiration Date.

                  As soon as  practicable  after the  exercise of any Warrant or
Warrants,  the Company  shall issue or cause to be issued to or upon the written
order of the  registered  holder of this Warrant  Certificate,  a certificate or
certificates evidencing the Warrant Share or Warrant Shares to which such holder
is entitled,  in fully registered form,  registered in such name or names as may
be directed by such holder pursuant to the Election to Exercise, as set forth on
the  face  of  this  Warrant  Certificate.   Such  certificate  or  certificates
evidencing  the  Warrant  Share or Warrant  Shares  shall be deemed to have been
issued and any persons who are designated to be named therein shall be deemed to
have become the holder of record of such Warrant  Share or Warrant  Shares as of
the close of  business on the date upon which the  exercise of this  Warrant was
deemed to be effective as provided in the preceding paragraph.

                  The Company  will not be required to issue  fractional  Shares
upon exercise of the Warrants or distribute  Warrant  Certificates that evidence
fractional Warrant Shares. In lieu of fractional Warrant Shares,  there shall be
paid to the  registered  Holder  of this  Warrant  Certificate  at the time such
Warrant Certificate is exercised an amount in cash equal to the same fraction of
the Current Market Value per share of Common Stock on the Business Day preceding
the date this Warrant Certificate is surrendered for exercise.

                  Warrant Certificates, when surrendered at any office or agency
maintained by the Company for that purpose by the  registered  holder thereof in
person or by legal representative or attorney duly authorized in writing, may be
exchanged for a new Warrant Certificate or new Warrant  Certificates  evidencing
in the  aggregate  a like number of  Warrants,  in the manner and subject to the
limitations  provided in the  Supplemental  Warrant  Agreement,  without  charge
except for any tax or other governmental charge imposed in connection therewith.

                  Upon due  presentment  for  registration  of  transfer of this
Warrant  Certificate at any office or agency  maintained by the Company for that
purpose, a new Warrant Certificate  evidencing in the aggregate a like number of
Warrants  shall be  issued  to the  transferee  in  exchange  for  this  Warrant
Certificate,  subject to the limitations  provided in the  Supplemental  Warrant
Agreement,  without  charge  except  for any tax or  other  governmental  charge
imposed in connection therewith.

                  The  Company  and the  Warrant  Agent  may deem and  treat the
registered  holder  hereof as the  absolute  owner of this  Warrant  Certificate
(notwithstanding  any  notation of  ownership  or other  writing  hereon made by
anyone) for the purpose of any exercise hereof and for all other  purposes,  and
neither the Company nor the Warrant Agent shall be affected by any notice to the
contrary.

                  The term  "BUSINESS DAY" shall mean any day on which (i) banks
in The City of New York, (ii) the principal U.S.  securities exchange or market,
if any, on which the Common Stock is listed or admitted to trading and (iii) the
principal U.S.  securities exchange or market, if any, on which the Warrants are
listed or admitted to trading are open for business.

                  The Warrants,  Warrant Shares and  Registrable  Securities (as
defined in the  Warrant  Registration  Rights  Agreement)  are  entitled  to the
benefits of a  registration  rights  agreement  relating to the Warrants and the
Warrant Shares (the "WARRANT REGISTRATION RIGHTS AGREEMENT"),  pursuant to which
the holders  representing  not less than 50% of Warrant  Shares and  Registrable
Securities  have, at any time and from time to time after (A) the  occurrence of
the earliest of (i) the time  immediately  prior to a Change of Control (as such
term is defined in the Indenture); (ii)(a) the180th day (or such earlier date as
determined by the Company in its sole discretion)  following the consummation of
an  Initial  Public  Equity  Offering  (as  defined  herein)  or  (b)  upon  the
consummation  of an  Initial  Public  Equity  Offering,  but only in  respect of
Warrants, if any, required to be exercised to permit the holders thereof to sell
Warrant Shares pursuant to their respective  registration rights, (iii) the time
when a class of  equity  securities  of the  Company  is  listed  on a  national
securities exchange or authorized for quotation on the Nasdaq National Market or
is otherwise  subject to registration  under the Exchange Act, or (iv) April 30,
2001, and (B) the completion of an Initial Public Equity Offering,  the right to
require the Company to effect one demand  registration of the Warrant Shares and
Registrable Securities.  The Warrant Registration Rights Agreement also provides
the holders of Registrable  Securities with the right, subject to the conditions
and limitations  contained  therein,  to include the  Registrable  Securities in
certain registration  statements filed by the Company for its account or for the
account of any of its securityholders.



<PAGE>


                         [FORM OF ELECTION TO EXERCISE]

         (To be executed upon exercise of Warrants on the Exercise Date)

                  The undersigned  hereby  irrevocably elects to exercise [ ] of
the  Warrants  represented  by this Warrant  Certificate  and purchase the whole
number of Shares  issuable  upon the  exercise  of such  Warrants  and  herewith
tenders payment for such Shares as follows:

                  $[ ] in cash or by  certified  or official  bank check;  or by
surrender  of  Warrants  pursuant  to a  Cashless  Exercise  (as  defined in the
Supplemental  Warrant Agreement) for [ ] shares of Stock at the current Cashless
Exercise Ratio.

                  The undersigned requests that a certificate  representing such
Shares  be  registered  in  the  name  of   _______________   whose  address  is
________________  and that such  shares be  delivered  to  _____________________
whose  address is  ________________.  Any cash  payments to be paid in lieu of a
fractional   Share  should  be  delivered   to   _________   whose   address  is
________________  and the check representing payment thereof should be delivered
to _____________ whose address is _____________________.

                  Dated ___________, ____

            Name of holder of
            Warrant Certificate:_______________________________________________
                                             (Please Print)

            Tax Identification or
            Social Security Number:_____________________________________________

            Address:  _________________________________________________________

            ---------------------------------------------------------

           Signature:_________________________________________________________
                  Note:    The above  signature must correspond with the name as
                           written upon the face of this Warrant  Certificate in
                           every particular,  without  alteration or enlargement
                           or  any  change   whatever  and  if  the  certificate
                           representing  the Shares or any  Warrant  Certificate
                           representing   Warrants   not   exercised  is  to  be
                           registered  in a name  other  than that in which this
                           Warrant  Certificate  is  registered,  or if any cash
                           payment to be paid in lieu of a  fractional  share is
                           to be made to a  person  other  than  the  registered
                           holder of this Warrant Certificate,  the signature of
                           the holder  hereof must be  guaranteed as provided in
                           the Supplemental Warrant Agreement.



                  Dated ______________, ____

             Signature:_________________________________________________________
                           Note:    The above signature must correspond with the
                                    name  as  written  upon  the  face  of  this
                                    Warrant  Certificate  in  every  particular,
                                    without  alteration  or  enlargement  or any
                                    change whatever.

           Signature Guaranteed:________________________________________________
                                    Signatures   must   be   guaranteed   by  an
                                    "eligible guarantor institution" meeting the
                                    requirements   of   the   Registrar,   which
                                    requirements     include    membership    or
                                    participation in the Security Transfer Agent
                                    Medallion  Program  ("STAMP")  or such other
                                    "signature  guarantee  program"  as  may  be
                                    determined  by the Registrar in addition to,
                                    or  in  substitution   for,  STAMP,  all  in
                                    accordance with the Securities  Exchange Act
                                    of 1934, as amended.

                              [FORM OF ASSIGNMENT]

                  For value  received  __________________________  hereby sells,
assigns and  transfers  unto  _____________________________  the within  Warrant
Certificate,  together  with all right,  title and  interest  therein,  and does
hereby irrevocably constitute and appoint ___________ attorney, to transfer said
Warrant Certificate on the books of the within-named Company, with full power of
substitution in the premises.

Dated ________________, ____

             Signature:_________________________________________________________
                           Note:    The above signature must correspond with the
                                    name  as  written  upon  the  face  of  this
                                    Warrant  Certificate  in  every  particular,
                                    without  alteration  or  enlargement  or any
                                    change whatever.

           Signature Guaranteed:________________________________________________
                                    Signatures   must   be   guaranteed   by  an
                                    "eligible guarantor institution" meeting the
                                    requirements   of   the   Registrar,   which
                                    requirements     include    membership    or
                                    participation in the Security Transfer Agent
                                    Medallion  Program  ("STAMP")  or such other
                                    "signature  guarantee  program"  as  may  be
                                    determined  by the Registrar in addition to,
                                    or  in  substitution   for,  STAMP,  all  in
                                    accordance with the Securities  Exchange Act
                                    of 1934, as amended.





                SCHEDULE OF EXCHANGES OF CERTIFICATED WARRANTS*

The  following  exchanges  of a part of this  Global  Warrant  for  certificated
Warrants have been made:
<TABLE>
<CAPTION>

                                                                          Number of Warrants
                           Amount of decrease    Amount of increase in      of this Global
                              in Number of       Number of Warrants of     Warrant following        Signature of
                            Warrants of this      this GLOBAL WARRANT      such decrease (or     authorized officer
    Date of EXCHANGE         GLOBAL WARRANT                                     INCREASE)         of WARRANT AGENT
            --------         --------------       -------------------    ----------------------      -------------
    <S>                     <C>                  <C>                      <C>                      <C>




</TABLE>









<PAGE>


                                       B-1

                                       B-1
                                                                       EXHIBIT B

                        FORM OF LEGEND FOR GLOBAL WARRANT

                  Any Global Warrant authenticated and delivered hereunder shall
bear a legend in substantially the following form:

                  THIS  SECURITY IS A GLOBAL  WARRANT  WITHIN THE MEANING OF THE
SUPPLEMENTAL WARRANT AGREEMENT  HEREINAFTER REFERRED TO AND IS REGISTERED IN THE
NAME  OF  A  DEPOSITORY  OR  A  SUCCESSOR  DEPOSITORY.   THIS  SECURITY  IS  NOT
EXCHANGEABLE  FOR  SECURITIES  REGISTERED IN THE NAME OF A PERSON OTHER THAN THE
DEPOSITORY OR ITS NOMINEE EXCEPT IN THE LIMITED  CIRCUMSTANCES  DESCRIBED IN THE
SUPPLEMENTAL  WARRANT AGREEMENT,  AND NO TRANSFER OF THIS SECURITY (OTHER THAN A
TRANSFER  OF THIS  SECURITY  AS A WHOLE BY THE  DEPOSITORY  TO A NOMINEE  OF THE
DEPOSITORY  OR BY A NOMINEE  OF THE  DEPOSITORY  TO THE  DEPOSITORY  OR  ANOTHER
NOMINEE OF THE DEPOSITORY) MAY BE REGISTERED EXCEPT IN THE LIMITED CIRCUMSTANCES
DESCRIBED IN THE SUPPLEMENTAL WARRANT AGREEMENT.

                  UNLESS  THIS   CERTIFICATE   IS  PRESENTED  BY  AN  AUTHORIZED
REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION  ("DTC"),
TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER,  EXCHANGE,  OR PAYMENT,
AND ANY  CERTIFICATE  ISSUED IS  REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH
OTHER  NAME AS IS  REQUESTED  BY AN  AUTHORIZED  REPRESENTATIVE  OF DTC (AND ANY
PAYMENT  IS MADE TO CEDE & CO. OR TO SUCH  OTHER  ENTITY AS IS  REQUESTED  BY AN
AUTHORIZED  REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR
VALUE OR  OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  INASMUCH AS THE  REGISTERED
OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.




<PAGE>



                                       C-1

                                       C-1
                                                                       EXHIBIT C

                    CERTIFICATE TO BE DELIVERED UPON EXCHANGE
                     OR REGISTRATION OF TRANSFER OF WARRANTS

Re:   Warrants   to  Purchase   Common   Stock  (the   "Warrants")   of  PATHNET
TELECOMMUNICATIONS, INC.

                  This  Certificate  relates  to  ____  Warrants  held  in*  ___
book-entry or* _______ certificated form by ______ (the "Transferor").

The Transferor:*

_____    has requested the Warrant Agent by written order to deliver in exchange
         for  its  beneficial  interest  in  the  Global  Warrant  held  by  the
         Depositary  a Warrant or Warrants  in  definitive,  registered  form of
         authorized   denominations   and  an  aggregate  number  equal  to  its
         beneficial  interest  in such Global  Warrant  (or the portion  thereof
         indicated above); or

_____    has  requested  the  Warrant  Agent by  written  order to  exchange  or
         register the transfer of a Warrant or Warrants.

                  In  connection  with such  request and in respect of each such
Warrant, the transferor does hereby certify that the Transferor is familiar with
the Supplemental Warrant Agreement,  dated as of March 30, 2000, relating to the
above captioned  Warrants and the restrictions on transfers  thereof as provided
in Section 1.08 of such Supplemental Warrant Agreement, and that the transfer of
this Warrant does not require  registration under the Securities Act of 1933, as
amended (the "Act") because:

_____    Such  Warrant  is being  acquired  for the  Transferor's  own  account,
         without  transfer (in satisfaction of Section 1.08 (a)(y)(A) or Section
         1.08 (d)(i)(A) of the Supplemental Warrant Agreement).

____     Such Warrant is being  transferred to a qualified  institutional  buyer
         (as defined in Rule 144A under the Act), in reliance on Rule 144A.

____     Such Warrant is being transferred in reliance on Regulation S under the
         Act.

____     Such Warrant is being transferred in accordance with Rule 144 under the
         Act.

____     Such Warrant is being transferred in reliance on and in compliance with
         an exemption from the registration requirements of the Act.


                                      ------------------------------------------
                                              [INSERT NAME OF TRANSFEROR]

                                      By: ______________________________________

Date:__________________

*Check applicable box.


                         Signature
                         Guaranteed:__________________________________________
                                    Signatures   must   be   guaranteed   by  an
                                    "eligible guarantor institution" meeting the
                                    requirements   of   the   Registrar,   which
                                    requirements     include    membership    or
                                    participation in the Security Transfer Agent
                                    Medallion  Program  ("STAMP")  or such other
                                    "signature  guarantee  program"  as  may  be
                                    determined  by the Registrar in addition to,
                                    or  in  substitution   for,  STAMP,  all  in
                                    accordance with the Securities  Exchange Act
                                    of 1934, as amended.



<PAGE>


                                       D-2

                                       D-1
                                                                       EXHIBIT D

                            Form of Certificate to be
                             Delivered in Connection
                           WITH REGULATION S TRANSFERS


                               ------------, ----



================
- - ----------------

Attention:  __________________


Ladies and Gentlemen:

                  In  connection  with our proposed  sale of Warrants of Pathnet
Telecommunications,  Inc (the  "Company"),  we  confirm  that such sale has been
effected  pursuant to and in accordance  with  Regulation S under the Securities
Act of 1933, as amended (the "Securities Act"), and,  accordingly,  we represent
that:

                  (1) the offer of the  Warrants was not made to a person in the
United States;

                  (2) either (a) at the time the buy offer was  originated,  the
transferee  was  outside  the United  States or we and any person  acting on our
behalf reasonably believed that the transferee was outside the United States, or
(b)  the  transaction  was  executed  in,  on or  through  the  facilities  of a
designated  off-shore  securities market and neither we nor any person acting on
our behalf knows that the transaction has been  pre-arranged with a buyer in the
United States;

                  (3) no directed  selling  efforts have been made in the United
States in  contravention  of the  requirements  of Rule 903(b) or Rule 904(b) of
Regulation S under the Securities Act, as applicable;

                  (4) the  transaction  is not part of a plan or scheme to evade
the registration requirements of the Securities Act;

                  (5) if the  circumstances  set forth in Rule 904(c)  under the
Securities Act are applicable,  we have complied with the additional  conditions
therein,  including  (if  applicable)  sending a  confirmation  or other  notice
stating that the Warrants may be offered and sold during the  restricted  period
specified  in Rule  903(c)(2)  or (3), as  applicable,  in  accordance  with the
provisions of Regulation S; pursuant to  registration  of the Warrants under the
Securities  Act; or pursuant to an  available  exemption  from the  registration
requirements under the Act.

                  You and the Company are  entitled to rely upon this letter and
are  irrevocably  authorized  to  produce  this  letter or a copy  hereof to any
interested party in any  administrative or legal proceedings or official inquiry
with respect to the matters  covered  hereby.  Defined terms used herein without
definition  have the  respective  meanings  provided in  Regulation  S under the
Securities Act.


                                               Very truly yours,

                                               [Name of Transferor]


                                               By:______________________________
                                                         Authorized Signature]

                  Upon transfer the Warrants  would be registered in the name of
the new beneficial owner as
follows:

Name:_____________________________

Address:____________________________

Taxpayer ID Number:__________________



- - --------
* This is to be included only if the Warrant is in global form.



                                                                    EXHIBIT 4.13


THE SECURITIES  EVIDENCED  HEREBY HAVE NOT BEEN REGISTERED  UNDER THE SECURITIES
ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), OR ANY STATE OR OTHER SECURITIES
LAWS.  NEITHER THIS  SECURITY NOR ANY  INTEREST OR  PARTICIPATION  HEREIN MAY BE
REOFFERED,  SOLD,  ASSIGNED,  TRANSFERRED,   PLEDGED,  ENCUMBERED  OR  OTHERWISE
DISPOSED OF IN THE ABSENCE OF SUCH  REGISTRATION  OR UNLESS SUCH  TRANSACTION IS
EXEMPT FROM, OR NOT SUBJECT TO, THE REGISTRATION  REQUIREMENTS OF THE SECURITIES
ACT.  HEDGING  TRANSACTIONS  INVOLVING THIS SECURITY MAY NOT BE CONDUCTED UNLESS
SUCH  TRANSACTIONS  ARE CONDUCTED IN  COMPLIANCE  WITH THE  SECURITIES  ACT. THE
HOLDER OF THIS SECURITY BY ITS ACCEPTANCE HEREOF (1) REPRESENTS THAT (A) IT IS A
"QUALIFIED  INSTITUTIONAL  BUYER" (AS DEFINED IN RULE 144A UNDER THE  SECURITIES
ACT)  OR (B) IT IS NOT A U.S.  PERSON  AND  IS  ACQUIRING  THIS  SECURITY  IN AN
"OFFSHORE  TRANSACTION"  PURSUANT TO REGULATION S UNDER THE SECURITIES  ACT, (2)
AGREES  THAT IT WILL NOT PRIOR TO (X) THE DATE  WHICH IS TWO YEARS (OR A SHORTER
PERIOD AS MAY BE PRESCRIBED BY RULE 144(K) (OR ANY SUCCESSOR  PROVISION THEREOF)
UNDER THE SECURITIES  ACT) AFTER THE LATER OF THE ORIGINAL ISSUE DATE HEREOF (OR
OF  ANY  PREDECESSOR  OF  THIS  SECURITY)  OR THE  LAST  DAY  ON  WHICH  PATHNET
TELECOMMUNICATIONS, INC. OR ANY OF ITS AFFILIATES WAS THE OWNER OF THIS SECURITY
OR ANY  PREDECESSOR  OF THIS SECURITY AND (Y) SUCH LATER DATE, IF ANY, AS MAY BE
REQUIRED BY APPLICABLE LAW (THE "RESALE RESTRICTION  TERMINATION DATE"),  OFFER,
SELL   OR   OTHERWISE   TRANSFER   THIS   SECURITY   EXCEPT   (A)   TO   PATHNET
TELECOMMUNICATIONS,  INC.  OR  ANY  OF  ITS  SUBSIDIARIES,  (B)  PURSUANT  TO  A
REGISTRATION  STATEMENT  WHICH HAS BEEN DECLARED  EFFECTIVE UNDER THE SECURITIES
ACT, (C) FOR SO LONG AS THE SECURITIES ARE ELIGIBLE FOR RESALE  PURSUANT TO RULE
144A, TO A PERSON IT REASONABLY BELIEVES IS A "QUALIFIED INSTITUTIONAL BUYER" AS
DEFINED IN RULE 144A UNDER THE SECURITIES ACT THAT PURCHASES FOR ITS OWN ACCOUNT
OR FOR THE  ACCOUNT OF A QUALIFIED  INSTITUTIONAL  BUYER TO WHOM NOTICE IS GIVEN
THAT THE TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, (D) PURSUANT TO OFFERS
AND SALES TO NON-U.S.  PERSONS THAT OCCUR  OUTSIDE THE UNITED  STATES WITHIN THE
MEANING  OF  REGULATION  S UNDER THE  SECURITIES  ACT,  PURSUANT  TO RULE 904 OF
REGULATION  S,  OR  (E)  PURSUANT  TO  ANOTHER  AVAILABLE   EXEMPTION  FROM  THE
REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND (3) AGREES THAT IT WILL GIVE
TO EACH PERSON TO WHOM THIS SECURITY IS  TRANSFERRED A NOTICE  SUBSTANTIALLY  TO
THE EFFECT OF THIS LEGEND; PROVIDED THAT THE COMPANY AND THE WARRANT AGENT SHALL
HAVE THE RIGHT PRIOR TO ANY SUCH OFFER,  SALE OR TRANSFER PURSUANT TO CLAUSE (E)
TO REQUIRE THE  DELIVERY OF AN OPINION OF COUNSEL,  CERTIFICATION  AND/OR  OTHER
INFORMATION  SATISFACTORY  TO EACH OF THEM. IN  CONNECTION  WITH ANY TRANSFER OF
THESE SECURITIES WITHIN THE TIME PERIOD REFERRED TO ABOVE, THE HOLDER MUST CHECK
THE  APPROPRIATE  BOX SET FORTH ON THE REVERSE HEREOF  RELATING TO THE MANNER OF
SUCH TRANSFER AND SUBMIT THIS CERTIFICATE TO THE WARRANT AGENT. THIS LEGEND WILL
BE  REMOVED  UPON  THE  REQUEST  OF THE  HOLDER  AFTER  THE  RESALE  RESTRICTION
TERMINATION  DATE. AS USED HEREIN,  THE TERMS  "OFFSHORE  TRANSACTION,"  "UNITED
STATES"  AND  "U.S.  PERSON"  HAVE  THE  RESPECTIVE  MEANINGS  GIVEN  TO THEM BY
REGULATION S UNDER THE SECURITIES ACT.

THIS SECURITY IS A GLOBAL WARRANT WITHIN THE MEANING OF THE SUPPLEMENTAL WARRANT
AGREEMENT  HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITORY
OR A SUCCESSOR  DEPOSITORY.  THIS SECURITY IS NOT  EXCHANGEABLE  FOR  SECURITIES
REGISTERED  IN THE NAME OF A PERSON  OTHER THAN THE  DEPOSITORY  OR ITS  NOMINEE
EXCEPT  IN THE  LIMITED  CIRCUMSTANCES  DESCRIBED  IN THE  SUPPLEMENTAL  WARRANT
AGREEMENT,  AND NO  TRANSFER  OF THIS  SECURITY  (OTHER  THAN A TRANSFER OF THIS
SECURITY AS A WHOLE BY THE  DEPOSITORY  TO A NOMINEE OF THE  DEPOSITORY  OR BY A
NOMINEE  OF  THE  DEPOSITORY  TO  THE  DEPOSITORY  OR  ANOTHER  NOMINEE  OF  THE
DEPOSITORY) MAY BE REGISTERED EXCEPT IN THE LIMITED  CIRCUMSTANCES  DESCRIBED IN
THE SUPPLEMENTAL WARRANT AGREEMENT.

UNLESS THIS  CERTIFICATE  IS PRESENTED BY AN  AUTHORIZED  REPRESENTATIVE  OF THE
DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION  ("DTC"),  TO THE ISSUER OR ITS
AGENT FOR REGISTRATION OF TRANSFER,  EXCHANGE,  OR PAYMENT,  AND ANY CERTIFICATE
ISSUED  IS  REGISTERED  IN THE NAME OF CEDE & CO.  OR IN SUCH  OTHER  NAME AS IS
REQUESTED  BY AN  AUTHORIZED  REPRESENTATIVE  OF DTC (AND ANY PAYMENT IS MADE TO
CEDE  &  CO.  OR  TO  SUCH  OTHER  ENTITY  AS  IS  REQUESTED  BY  AN  AUTHORIZED
REPRESENTATIVE  OF DTC),  ANY TRANSFER,  PLEDGE OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE  BY OR TO ANY PERSON IS  WRONGFUL  INASMUCH  AS THE  REGISTERED  OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.





<PAGE>


                                                                CUSIP # ________

No.  _____                                                     _________Warrants

                           FORM OF WARRANT CERTIFICATE

                        PATHNET TELECOMMUNICATIONS, INC.

                  This  Warrant  Certificate  certifies  that  CEDE  &  CO.,  or
registered   assigns,   is  the  registered  holder  of  200,000  Warrants  (the
"WARRANTS")  to  purchase  shares of Common  Stock,  par value  $0.01 per share,
issuable  upon  exercise  of the  Warrants  (the  "WARRANT  SHARES")  of PATHNET
TELECOMMUNICATIONS,  INC., a Delaware  corporation  (the  "COMPANY,"  which term
includes  its  successors  and  assigns).  Each  Warrant  entitles the holder to
purchase  from the  Company at any time from 9:00 a.m.  New York City time on or
after the Exercisability  Date until 5:00 p.m., New York City time, on April 15,
2008 (the "EXPIRATION  DATE"),  3.19 fully paid,  registered and  non-assessable
Warrant  Shares,  subject  to  adjustment  as  provided  in  Article  V  of  the
Supplemental  Warrant  Agreement,  at an exercise  price of $0.01 for each share
purchased (the "EXERCISE PRICE"); upon surrender of this Warrant Certificate and
payment of the  Exercise  Price (i) in cash or by  certified  or  official  bank
check,  (ii) by a Cashless Exercise or (iii) by any combination of (i) and (ii),
at any office or agency maintained for that purpose by the Company (the "WARRANT
EXERCISE  OFFICE"),  subject  to the  conditions  set  forth  herein  and in the
Supplemental  Warrant  Agreement.  For  purposes  of this  Warrant,  a "CASHLESS
EXERCISE" shall mean an exercise of a Warrant in accordance with the immediately
following two sentences.  To effect a Cashless Exercise, the holder may exercise
a  Warrant  or  Warrants  without  payment  of the  Exercise  Price  in  cash by
surrendering  such  Warrant  or  Warrants  (represented  by one or more  Warrant
Certificates)  and in  exchange  therefor,  receiving  such  number of shares of
Common  Stock equal to the product of (1) that number of shares of Common  Stock
for which such Warrant or Warrants are  exercisable  and which would be issuable
in the event of an  exercise  with  payment  of the  Exercise  Price and (2) the
Cashless  Exercise Ratio. The "CASHLESS  EXERCISE RATIO" shall equal a fraction,
the numerator of which is the excess of the Current Market Value  (calculated as
set forth in this  Warrant)  per share of Common  Stock on the date of  exercise
over the Exercise Price per share of Common Stock as of the date of exercise and
the  denominator  of which is the Current Market Value per share of Common Stock
on the date of exercise.  Upon surrender of a Warrant  Certificate  representing
more than one Warrant in connection with the holder's option to elect a Cashless
Exercise,  the holder must specify the number of Warrants for which such Warrant
Certificate is to be exercised (without giving effect to the Cashless Exercise).
All provisions of the  Supplemental  Warrant  Agreement shall be applicable with
respect to a Cashless  Exercise of a Warrant  Certificate for less than the full
number of Warrants  represented  thereby.  Capitalized terms used herein without
being defined  herein shall have the  definitions  ascribed to such terms in the
Supplemental Warrant Agreement.

                  "CURRENT  MARKET VALUE" per share of Common Stock or any other
security  at any date  means (i) if the  security  is not  registered  under the
Exchange  Act, (a) the value of the  security,  determined  in good faith by the
board of directors of the Company and certified in a board resolution,  based on
the most recently completed  arm's-length  transaction between the Company and a
person other than an Affiliate of the Company and the closing of which occurs on
such date or shall have occurred  within the  six-month  period  preceding  such
date, or (b) if no such  transaction  shall have occurred on such date or within
such  six-month  period or if the board of  directors  of the Company  otherwise
elects,  the Fair Market Value of the security as  determined by a nationally or
regionally recognized Independent Financial Expert (as defined herein) (PROVIDED
that, in the case of the calculation of Current Market Value for determining the
cash value of fractional shares,  any such determination  within six months that
is, in the good faith  judgment  of the board of  directors  of the  Company,  a
reasonable  determination of value, may be utilized) or (ii) (a) if the security
is  registered  under the Exchange  Act, the average of the daily  closing sales
prices  of the  securities  for  the 20  consecutive  trading  days  immediately
preceding  such  date,  or (b) if the  security  has been  registered  under the
Exchange Act for less than 20  consecutive  trading days before such date,  then
the average  daily  closing sales prices for all of the trading days before such
date for which closing sales prices are  available,  in the case of each of (ii)
(a) and (ii) (b), as certified to the Warrant Agent by the President or any vice
president or the Chief Financial Officer of the Company. The closing sales price
for each such  trading  day shall be:  (A) in the case of a  security  listed or
admitted  to  trading on any  United  States  national  securities  exchange  or
quotation  system,  the closing sales price,  regular way, on such day, or if no
sale takes place on such day, the average of the closing bid and asked prices on
such day,  (B) in the case of a security  not then listed or admitted to trading
on any national  securities exchange or quotation system, the last reported sale
price on such day,  or if no sale takes  place on such day,  the  average of the
closing bid and asked  prices on such day, as reported by a reputable  quotation
source designated by the Company,  (C) in the case of a security not then listed
or admitted to trading on any national  securities  exchange or quotation system
and as to  which  no such  reported  sale  price  or bid and  asked  prices  are
available,  the average of the  reported  high bid and low asked  prices on such
day, as reported by a reputable  quotation  service,  or a newspaper  of general
circulation  in the  Borough  of  Manhattan,  The  City and  State of New  York,
customarily  published on each Business Day,  designated by the Company,  or, if
there shall be no bid and asked  prices on such day, the average of the high bid
and low asked prices,  as so reported,  on the most recent day (not more than 30
days prior to the date in  question)  for which prices have been so reported and
(D) if there are not bid and asked prices  reported  during the 30 days prior to
the date in question,  the Current  Market Value shall be  determined  as if the
securities were not registered under the Exchange Act.

                  "EXERCISE EVENT" means, with respect to each Warrant, the date
of the occurrence of the earliest of: (i) the time immediately prior to a Change
of Control (as such term is defined in the Indenture); (ii)(a) the 180th day (or
such earlier date as determined by the Company in its sole discretion) following
the closing of an Initial Public Equity Offering (as defined herein) or (b) upon
the  closing  of an  Initial  Public  Equity  Offering,  but only in  respect of
Warrants, if any, required to be exercised to permit the holders thereof to sell
Warrant Shares pursuant to their respective  registration rights, (iii) the time
when a class of  equity  securities  of the  Company  is  listed  on a  national
securities exchange or authorized for quotation on the Nasdaq National Market or
is otherwise  subject to registration  under the Exchange Act, or (iv) April 30,
2001.

                  "INDEPENDENT   FINANCIAL   EXPERT"   means  a  nationally   or
regionally recognized investment banking or public accounting firm in the United
States  or,  if the  Company  believes  that an  investment  banking  or  public
accounting firm is generally not qualified to give such an opinion, a nationally
recognized  appraisal firm, in any case (i) which does not, and whose directors,
officers and employees or Affiliates do not, have a direct or indirect  material
financial  interest  for its  proprietary  account in the  Company or any of its
Affiliates  and (ii) which,  in the  judgment of the Board of  Directors  of the
Company, is otherwise independent with respect to the Company and its Affiliates
and qualified to perform the task for which it is to be engaged.

                  The Company has initially  designated the principal  corporate
trust office of the Warrant Agent in the Borough of  Manhattan,  The City of New
York, as the initial Warrant Agent Office.  The number of shares of Common Stock
issuable  upon  exercise  of  the  Warrants  ("Exercise  Rate")  is  subject  to
adjustment  upon the occurrence of certain events set forth in the  Supplemental
Warrant Agreement.

                  Any Warrants not exercised on or prior to 5:00 p.m.,  New York
City time, on April 15, 2008 shall thereafter be void.

                  If the Company, in a single transaction or through a series of
related transactions,  consolidates with or merges with or into, or sells all or
substantially  all of its property and assets to,  another  Person (other than a
subsidiary of the Company)  solely for cash,  the holders of Warrants  which are
then exercisable shall be entitled to receive  distributions on the date of such
event on an equal  basis  with  holders  of  shares of  Capital  Stock (or other
securities  issuable  upon exercise of the Warrants) as if the Warrants had been
exercised  immediately  prior to such event less the  aggregate  Exercise  Price
therefor.

                  Reference  is hereby  made to the  further  provisions  on the
reverse hereof which  provisions  shall for all purposes have the same effect as
though fully set forth at this place.

                  This   Warrant   Certificate   shall   not  be  valid   unless
authenticated  by the Warrant  Agent,  as such term is used in the  Supplemental
Warrant Agreement.

                  THIS WARRANT CERTIFICATE SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.



<PAGE>


                  WITNESS the signatures of the duly authorized  officers of the
Company.


                                                PATHNET TELECOMMUNICATIONS, INC.



                                      By:_______________________________________
                                         Name:
                                         Title:

Attest:


By:_________________________________
     Name: Mary McDermott
     Title:  Secretary

Certificate of Authentication:
This is one of the Warrants
referred to in the within
mentioned Supplemental Warrant Agreement:

Dated:

THE BANK OF NEW YORK,
         Warrant Agent


By:__________________________________
     Authorized Signatory





<PAGE>



                        PATHNET TELECOMMUNICATIONS, INC.

                  The Warrants evidenced by this Warrant Certificate are part of
a duly authorized  issue of Warrants  expiring at 5:00 p.m., New York City time,
on April 15, 2008 (the "EXPIRATION DATE"), each of which represents the right to
purchase  at any time on or after the  Exercisability  Date (as  defined  in the
Supplemental  Warrant  Agreement)  and on or prior to the  Expiration  Date 3.19
Shares,  subject  to  adjustment  as  set  forth  in  the  Supplemental  Warrant
Agreement.  The Warrants are issued pursuant to a Supplemental Warrant Agreement
dated as of March 30, 2000 (the "SUPPLEMENTAL WARRANT AGREEMENT"), duly executed
and  delivered  by the  Company  to The Bank of New  York,  Warrant  Agent  (the
"WARRANT AGENT"), which Supplemental Warrant Agreement is hereby incorporated by
reference in and made a part of this  instrument and is hereby referred to for a
description  of the  rights,  limitation  of  rights,  obligations,  duties  and
immunities  thereunder  of the Warrant  Agent,  the Company and the holders (the
words "HOLDERS" or "HOLDER" meaning the registered holders or registered holder)
of the Warrants.

                  Warrants may be exercised by (i)  surrendering  at any Warrant
Agent Office this Warrant  Certificate with the form of Election to Exercise set
forth hereon duly completed and executed and (ii) to the extent such exercise is
not being  effected  through a Cashless  Exercise  by paying in full the Warrant
Exercise Price for each such Warrant exercised and any other amounts required to
be paid pursuant to the Supplemental Warrant Agreement.

                  If all of the items  referred  to in the last  sentence of the
preceding paragraph are received by the Warrant Agent at or prior to 11:00 a.m.,
New York City time, on a Business Day, the exercise of the Warrant to which such
items relate will be effective on such Business Day. If any items referred to in
the last sentence of the preceding  paragraph are received after 11:00 a.m., New
York City time,  on a Business  Day,  the exercise of the Warrants to which such
item relates will be deemed to be effective on the next succeeding Business Day.
Notwithstanding  the foregoing,  in the case of an exercise of Warrants on April
15, 2008, if all of the items  referred to in the last sentence of the preceding
paragraph are received by the Warrant  Agent at or prior to 5:00 p.m.,  New York
City time, on such  Expiration  Date, the exercise of the Warrants to which such
items relate will be effective on the Expiration Date.

                  As soon as  practicable  after the  exercise of any Warrant or
Warrants,  the Company  shall issue or cause to be issued to or upon the written
order of the  registered  holder of this Warrant  Certificate,  a certificate or
certificates evidencing the Warrant Share or Warrant Shares to which such holder
is entitled,  in fully registered form,  registered in such name or names as may
be directed by such holder pursuant to the Election to Exercise, as set forth on
the  face  of  this  Warrant  Certificate.   Such  certificate  or  certificates
evidencing  the  Warrant  Share or Warrant  Shares  shall be deemed to have been
issued and any persons who are designated to be named therein shall be deemed to
have become the holder of record of such Warrant  Share or Warrant  Shares as of
the close of  business on the date upon which the  exercise of this  Warrant was
deemed to be effective as provided in the preceding paragraph.

                  The Company  will not be required to issue  fractional  Shares
upon exercise of the Warrants or distribute  Warrant  Certificates that evidence
fractional Warrant Shares. In lieu of fractional Warrant Shares,  there shall be
paid to the  registered  Holder  of this  Warrant  Certificate  at the time such
Warrant Certificate is exercised an amount in cash equal to the same fraction of
the Current Market Value per share of Common Stock on the Business Day preceding
the date this Warrant Certificate is surrendered for exercise.

                  Warrant Certificates, when surrendered at any office or agency
maintained by the Company for that purpose by the  registered  holder thereof in
person or by legal representative or attorney duly authorized in writing, may be
exchanged for a new Warrant Certificate or new Warrant  Certificates  evidencing
in the  aggregate  a like number of  Warrants,  in the manner and subject to the
limitations  provided in the  Supplemental  Warrant  Agreement,  without  charge
except for any tax or other governmental charge imposed in connection therewith.

                  Upon due  presentment  for  registration  of  transfer of this
Warrant  Certificate at any office or agency  maintained by the Company for that
purpose, a new Warrant Certificate  evidencing in the aggregate a like number of
Warrants  shall be  issued  to the  transferee  in  exchange  for  this  Warrant
Certificate,  subject to the limitations  provided in the  Supplemental  Warrant
Agreement,  without  charge  except  for any tax or  other  governmental  charge
imposed in connection therewith.

                  The  Company  and the  Warrant  Agent  may deem and  treat the
registered  holder  hereof as the  absolute  owner of this  Warrant  Certificate
(notwithstanding  any  notation of  ownership  or other  writing  hereon made by
anyone) for the purpose of any exercise hereof and for all other  purposes,  and
neither the Company nor the Warrant Agent shall be affected by any notice to the
contrary.

                  The term  "BUSINESS DAY" shall mean any day on which (i) banks
in The City of New York, (ii) the principal U.S.  securities exchange or market,
if any, on which the Common Stock is listed or admitted to trading and (iii) the
principal U.S.  securities exchange or market, if any, on which the Warrants are
listed or admitted to trading are open for business.

                  The Warrants,  Warrant Shares and  Registrable  Securities (as
defined in the  Warrant  Registration  Rights  Agreement)  are  entitled  to the
benefits of a  registration  rights  agreement  relating to the Warrants and the
Warrant Shares (the "WARRANT REGISTRATION RIGHTS AGREEMENT"),  pursuant to which
the holders  representing  not less than 50% of Warrant  Shares and  Registrable
Securities  have, at any time and from time to time after (A) the  occurrence of
the earliest of (i) the time  immediately  prior to a Change of Control (as such
term is defined in the Indenture); (ii)(a) the180th day (or such earlier date as
determined by the Company in its sole discretion)  following the consummation of
an  Initial  Public  Equity  Offering  (as  defined  herein)  or  (b)  upon  the
consummation  of an  Initial  Public  Equity  Offering,  but only in  respect of
Warrants, if any, required to be exercised to permit the holders thereof to sell
Warrant Shares pursuant to their respective  registration rights, (iii) the time
when a class of  equity  securities  of the  Company  is  listed  on a  national
securities exchange or authorized for quotation on the Nasdaq National Market or
is otherwise  subject to registration  under the Exchange Act, or (iv) April 30,
2001, and (B) the completion of an Initial Public Equity Offering,  the right to
require the Company to effect one demand  registration of the Warrant Shares and
Registrable Securities.  The Warrant Registration Rights Agreement also provides
the holders of Registrable  Securities with the right, subject to the conditions
and limitations  contained  therein,  to include the  Registrable  Securities in
certain registration  statements filed by the Company for its account or for the
account of any of its securityholders.


                              ELECTION TO EXERCISE

                  (To be executed  upon  exercise  of  Warrants on the  Exercise
Date)

                  The undersigned  hereby  irrevocably elects to exercise [ ] of
the  Warrants  represented  by this Warrant  Certificate  and purchase the whole
number of Shares  issuable  upon the  exercise  of such  Warrants  and  herewith
tenders payment for such Shares as follows:

                  $[ ] in cash or by  certified  or official  bank check;  or by
surrender  of  Warrants  pursuant  to a  Cashless  Exercise  (as  defined in the
Supplemental  Warrant Agreement) for [ ] shares of Stock at the current Cashless
Exercise Ratio.

                  The undersigned requests that a certificate  representing such
Shares  be  registered  in  the  name  of   _______________   whose  address  is
________________  and that such  shares be  delivered  to  _____________________
whose  address is  ________________.  Any cash  payments to be paid in lieu of a
fractional   Share  should  be  delivered   to   _________   whose   address  is
________________  and the check representing payment thereof should be delivered
to _____________ whose address is _____________________.

                  Dated ___________, ____

                  Name of holder of
                  Warrant Certificate:_________________________________________
                                                              (Please Print)

                  Tax Identification or
                  Social Security Number:______________________________________

                  Address:  ___________________________________________________

            ---------------------------------------------------------

                  Signature:___________________________________________________
                           Note:    The above signature must correspond with the
                                    name  as  written  upon  the  face  of  this
                                    Warrant  Certificate  in  every  particular,
                                    without  alteration  or  enlargement  or any
                                    change   whatever  and  if  the  certificate
                                    representing   the  Shares  or  any  Warrant
                                    Certificate    representing   Warrants   not
                                    exercised  is to  be  registered  in a  name
                                    other  than  that  in  which  this   Warrant
                                    Certificate  is  registered,  or if any cash
                                    payment  to be paid in lieu of a  fractional
                                    share is to be made to a person  other  than
                                    the   registered   holder  of  this  Warrant
                                    Certificate,  the  signature  of the  holder
                                    hereof must be guaranteed as provided in the
                                    Supplemental Warrant Agreement.



                  Dated ______________, ____

                  Signature:___________________________________________________
                           Note:    The above signature must correspond with the
                                    name  as  written  upon  the  face  of  this
                                    Warrant  Certificate  in  every  particular,
                                    without  alteration  or  enlargement  or any
                                    change whatever.

                  Signature Guaranteed:________________________________________
                                    Signatures   must   be   guaranteed   by  an
                                    "eligible guarantor institution" meeting the
                                    requirements   of   the   Registrar,   which
                                    requirements     include    membership    or
                                    participation in the Security Transfer Agent
                                    Medallion  Program  ("STAMP")  or such other
                                    "signature  guarantee  program"  as  may  be
                                    determined  by the Registrar in addition to,
                                    or  in  substitution   for,  STAMP,  all  in
                                    accordance with the Securities  Exchange Act
                                    of 1934, as amended.


                                   ASSIGNMENT

                  For value  received  __________________________  hereby sells,
assigns and  transfers  unto  _____________________________  the within  Warrant
Certificate,  together  with all right,  title and  interest  therein,  and does
hereby irrevocably constitute and appoint ___________ attorney, to transfer said
Warrant Certificate on the books of the within-named Company, with full power of
substitution in the premises.

Dated ________________, ____

                  Signature:___________________________________________________
                           Note:    The above signature must correspond with the
                                    name  as  written  upon  the  face  of  this
                                    Warrant  Certificate  in  every  particular,
                                    without  alteration  or  enlargement  or any
                                    change whatever.

                  Signature Guaranteed:________________________________________
                                    Signatures   must   be   guaranteed   by  an
                                    "eligible guarantor institution" meeting the
                                    requirements   of   the   Registrar,   which
                                    requirements     include    membership    or
                                    participation in the Security Transfer Agent
                                    Medallion  Program  ("STAMP")  or such other
                                    "signature  guarantee  program"  as  may  be
                                    determined  by the Registrar in addition to,
                                    or  in  substitution   for,  STAMP,  all  in
                                    accordance with the Securities  Exchange Act
                                    of 1934, as amended.


<PAGE>



                 SCHEDULE OF EXCHANGES OF CERTIFICATED WARRANTS

The  following  exchanges  of a part of this  Global  Warrant  for  certificated
Warrants have been made:
<TABLE>
<CAPTION>

                                                                          Number of Warrants
                           Amount of decrease    Amount of increase in      of this Global
                              in Number of       Number of Warrants of     Warrant following        Signature of
                            Warrants of this      this GLOBAL WARRANT      such decrease (or     authorized officer
    Date of EXCHANGE         GLOBAL WARRANT                                     INCREASE)         of WARRANT AGENT
            --------         --------------       -------------------    ----------------------      -------------
     <S>                    <C>                                          <C>                       <C>



</TABLE>



                                                                    EXHIBIT 4.14




                          AMENDED AND RESTATED WARRANT
                          REGISTRATION RIGHTS AGREEMENT

                           Dated as of March 30, 2000

                                     Between

                        PATHNET TELECOMMUNICATIONS, INC.,
                                       and
                        SPECTRUM EQUITY INVESTORS, L.P.,
               NEW ENTERPRISE ASSOCIATES VI, LIMITED PARTNERSHIP,
                      ONSET ENTERPRISE ASSOCIATES II, L.P.,
                     FBR TECHNOLOGY VENTURE PARTNERS, L.P.,
                      TORONTO DOMINION CAPITAL (USA) INC.,
                          GROTECH PARTNERS IV, L.P. and
                                RICHARD A. JALKUT





<PAGE>
<TABLE>
<CAPTION>


                                TABLE OF CONTENTS

                                                                                                               PAGE
<S>                                                                                                              <C>

Section 1.        Definitions.....................................................................................1

Section 2.        Registration Rights.............................................................................6
          2.1     (a)    Demand Registration......................................................................6
                  (b)    Effective Registration...................................................................7
                  (c)    Selection of Underwriter.................................................................7
                  (d)    Expenses.................................................................................8
          2.2     (a)    Piggy-Back Registration..................................................................8
                  (b)    Priority in Piggy-Back Registration......................................................9
          2.3     Limitations, Conditions and Qualifications to Obligations Under
                  Registration Covenants..........................................................................9
          2.4     Restrictions on Sale by the Company and Others.................................................10
          2.5     Rule 144 and Rule 144A.........................................................................11
          2.6     Underwritten Registration......................................................................11

Section 3.        Transfers......................................................................................12
          3.1     Generally......................................................................................12
          3.2     Tag-Along Rights...............................................................................12
          3.3     Drag-Along Rights..............................................................................14

Section 4.        Registration Procedures........................................................................14

Section 5.        Indemnification and Contribution...............................................................20

Section 6.        Miscellaneous..................................................................................23
          (a)     Remedies.......................................................................................23
          (b)     No Inconsistent Agreements.....................................................................24
          (c)     No Piggy-Back on Demand Registrations..........................................................24
          (d)     Amendments and Waivers.........................................................................24
          (e)     Notices........................................................................................24
          (f)     Successors and Assigns.........................................................................24
          (g)     Counterparts...................................................................................25
          (h)     GOVERNING LAW..................................................................................25
          (i)     Severability...................................................................................25
          (j)     Headings.......................................................................................25
          (k)     Entire Agreement...............................................................................25
          (l)     Securities Held by the Company or Its Affiliates...............................................25


</TABLE>



<PAGE>



                          AMENDED AND RESTATED WARRANT
                          REGISTRATION RIGHTS AGREEMENT



                  This  AMENDED  AND  RESTATED   WARRANT   REGISTRATION   RIGHTS
AGREEMENT  (this  "AGREEMENT")  is made and entered  into as of March 30,  2000,
between   PATHNET   TELECOMMUNICATIONS,   INC.  (the   "COMPANY"),   a  Delaware
corporation,  and SPECTRUM EQUITY INVESTORS, L.P., NEW ENTERPRISE ASSOCIATES VI,
LIMITED  PARTNERSHIP,  ONSET  ENTERPRISE  ASSOCIATES  II, L.P.,  FBR  TECHNOLOGY
VENTURE PARTNERS,  L.P.,  TORONTO DOMINION CAPITAL (USA) INC.,  GROTECH PARTNERS
IV, L.P., and RICHARD A. JALKUT (the "PERMITTED HOLDERS").


                  The  predecessor  to this  Agreement was  originally  executed
pursuant to the Purchase Agreement dated as of April 8, 1998, among Pathnet, Inc
("PATHNET")  and the Initial  Purchasers,  with respect to the issue and sale by
Pathnet and the purchase by the Initial Purchasers, severally, of the respective
number of Pathnet's  Units,  each Unit consisting of $1,000  principal amount of
the Company's  12.25% Senior Notes due 2008 (the "Notes") and one warrant (each,
a "PATHNET  WARRANT"),  each initially  entitling the holder thereof to purchase
1.1 shares of common  stock,  par value $0.01 per share,  of Pathnet,  set forth
opposite such Initial  Purchaser's name on Schedule I to the Purchase Agreement.
This Agreement,  which amends and restates the original agreement,  reflects the
substitution  of the Company as a party to this Agreement in lieu of Pathnet and
the conversion of each Pathnet Warrant into a warrant (each, a "WARRANT") which,
as of the date hereof,  entitles the holder  thereof to purchase  3.19 shares of
common stock, par value $0.01 per share, of the Company ("COMMON STOCK").

                  In consideration of the foregoing, the parties hereto agree as
follows:

                  Section 1.  DEFINITIONS. As used in this Agreement, the
                              -----------
following defined terms shall have the following meanings:

                  "ADVICE"  shall  have the  meaning  ascribed  to such  term in
Section 4 hereof.

                  "AFFILIATE"  shall have the  meaning  ascribed to such term in
the Indenture.

                  "AGREEMENT"  shall have the  meaning  ascribed to such term in
the preamble hereto.

                  "BUSINESS DAY" shall mean a day that is not a Legal Holiday.

                  "CAPITAL  STOCK" shall mean,  with respect to any Person,  any
and all shares, interests, partnership interests,  participations,  rights in or
other equivalents (however designated and whether voting or non-voting) of, such
Person's capital stock,  and any rights (other than debt securities  convertible
into capital stock),  warrants or options  exchangeable  for or convertible into
such capital stock whether outstanding on the Issue Date or thereafter issued.

                  "CHANGE OF CONTROL"  shall have the  meaning  ascribed to such
term in the Indenture.

                  "COMPANY" shall have the meaning  ascribed to such term in the
preamble  of this  Agreement  and shall also  include  the  Company's  permitted
successors and assigns.

                  "COMMON STOCK" shall have the meaning ascribed to such term in
the preamble of this  Agreement  and any other class or series of common  equity
equivalent   shares  of  the  Company  into  which  such  Common  Stock  may  be
reclassified and sold to the public in an Initial Public Equity Offering.

                  "CONVERTIBLE  PREFERRED STOCK" shall mean the Series Preferred
Stock (as  defined in the  Indenture)  of the  Company  and any other  series of
preferred  stock  convertible  or  exchangeable   into  Common  Stock,   whether
outstanding on the date hereof or thereafter issued.

                  "CURRENT MARKET VALUE" shall have the meaning ascribed to such
term in the Warrant Agreement.

                  "DEMAND  REGISTRATION" shall have the meaning ascribed to such
term in Section 2.1(a) hereof.

                  "DRAG-ALONG  RIGHT"  shall have the  meaning  ascribed to such
term in Section 3.3 hereof.

                  "DTC" shall have the meaning  ascribed to such term in Section
4(i) hereof.

                  "EFFECTIVENESS PERIOD" shall have the meaning ascribed to such
term in Section 2.1(a) hereof.

                  "EXCHANGE ACT" shall mean the Securities Exchange Act of 1934,
as amended from time to time.

                  "FAIR MARKET VALUE" shall mean the value of any  securities as
determined  (without  any  discount  for lack of  liquidity,  the amount of such
securities  proposed  to be sold or the fact  that such  securities  held by any
Holder of such security may represent a minority  interest in a private company)
by a nationally or regionally  recognized  independent financial expert selected
by the Company for the determination of such value.

                  "HOLDER"  shall  mean  each  holder of any  Warrants,  Warrant
Shares or  Registrable  Securities,  and each of their  successors,  assigns and
direct and indirect  transferees who become  registered owners of such Warrants,
Warrant Shares or Registrable Securities for so long as such Person continues to
hold such Warrants, Warrant Shares or Registrable Securities.

                  "INCLUDED  SECURITIES" shall have the meaning ascribed to such
term in Section 2.1(a) hereof.

                  "INDENTURE"  shall  mean the  Indenture,  dated as of April 8,
2000 between  Pathnet and The Bank of New York,  Trustee,  pursuant to which the
Notes were issued,  as amended as of March 30, 2000,  and as further  amended or
supplemented from time to time in accordance with the terms thereof.

                  "INDEPENDENT   FINANCIAL  EXPERT  "  shall  have  the  meaning
ascribed to such term in the Indenture.

                  "INITIAL  PUBLIC EQUITY  OFFERING" shall mean a primary public
offering  (whether or not  underwritten,  but excluding any offering pursuant to
Form S-8 under the  Securities  Act or any other  publicly  registered  offering
pursuant to the  Securities  Act  pertaining  to an issuance of Common  Stock or
securities  exercisable  therefor under any benefit plan, employee  compensation
plan, or employee or director  stock  purchase plan) of Common Stock pursuant to
an effective registration statement under the Securities Act.

                  "INITIAL PURCHASERS" shall mean Merrill Lynch & Co., Merrill
                   ------------------
Lynch,  Pierce,  Fenner & Smith  Incorporated,  Bear,  Stearns  & Co.  Inc.,  TD
Securities (USA) Inc., and Salomon Brothers Inc.

                  "INSPECTORS"  shall have the meaning  ascribed to such term in
Section 4(m) hereof.

                  "ISSUE DATE" shall mean the date hereof.

                  "LEGAL  HOLIDAY"  shall mean a Saturday,  a Sunday or a day on
which  (i)  banking  institutions  in The  City  of New  York  are  required  or
authorized by law or other government action to be closed and (ii) the principal
U.S.  securities exchange or market, if any, on which any Common Stock is listed
or admitted to trading and the principal U.S.  securities exchange or market, if
any,  on which the  Warrants  are listed or  admitted  to trading are closed for
business.

                  "NOTES"  shall have the  meaning  ascribed to such term in the
preamble hereof.

                  "PARTICIPATING HOLDER" shall have the meaning ascribed to such
term in Section 3.2(c).

                  "PERMITTED  HOLDER"  shall have the  meaning  ascribed to such
term in the preamble hereof.

                  "PATHNET" shall have the meaning  ascribed to such term in the
preamble hereof.

                  "PATHNET  WARRANT" shall have meaning ascribed to such term in
the preamble  hereof "PERSON" shall mean any  individual,  corporation,  limited
liability company, partnership, joint venture, association, joint-stock company,
trust, business trust,  unincorporated  organization or government or any agency
or political subdivision thereof,  including any entity that is a predecessor of
any such entity.

                  "PIGGY-BACK  REGISTRATION"  shall have the meaning ascribed to
such term in Section 2.2(a) hereof.

                  "PROPOSED  PURCHASER"  shall have the meaning ascribed to such
term in Section 3.2(a) hereof.

                  "PROSPECTUS"  shall  mean  the  prospectus   included  in  any
Registration Statement (including, without limitation, any prospectus subject to
completion and a prospectus  that includes any  information  previously  omitted
from a  prospectus  filed  as part of an  effective  registration  statement  in
reliance upon Rule 430A  promulgated  under the  Securities  Act), as amended or
supplemented  by any  prospectus  supplement,  with  respect to the terms of the
offering  of  any  portion  of  the  Registrable   Securities  covered  by  such
Registration  Statement,  and  all  other  amendments  and  supplements  to  the
Prospectus,  including post-effective  amendments, and all material incorporated
by reference or deemed to be incorporated by reference in such Prospectus.

                  "REGISTRABLE  SECURITIES"  shall  mean  any of (i) the  Common
Stock  issued and  issuable  upon  exercise of the  Warrants  and (ii) any other
securities  issued or issuable with respect to the Warrants or Warrant Shares by
way of stock  dividend or stock split or in  connection  with a  combination  of
shares,  recapitalization,  merger,  consolidation  or other  reorganization  or
otherwise.  As to any particular Registrable  Securities,  such securities shall
cease to be  Registrable  Securities  when  (a) a  Registration  Statement  with
respect to the offering of such securities by the holder thereof shall have been
declared  effective under the Securities Act and such securities shall have been
disposed of by such holder  pursuant to such  Registration  Statement,  (b) such
securities  have been sold to the public  pursuant to, or are eligible (or would
have been  eligible if the holder of Warrants had elected  cashless  exercise of
the Warrant or Warrants) for sale to the public without volume or manner of sale
restrictions under, Rule 144(k) (or any similar provision then in force, but not
Rule 144A)  promulgated under the Securities Act, (c) such securities shall have
been otherwise  transferred and new certificates for such securities not bearing
a legend  restricting  further transfer shall have been delivered by the Company
or its transfer agent and subsequent  disposition of such  securities  shall not
require  registration or  qualification  under the Securities Act or any similar
state  law  then in  force  or (d)  such  securities  shall  have  ceased  to be
outstanding.

                  "REGISTRATION  EXPENSES"  shall mean all expenses  incident to
the Company's  performance  of or  compliance  with this  Agreement,  including,
without  limitation,  all SEC and stock  exchange  or  National  Association  of
Securities  Dealers,  Inc.  registration and filing fees and expenses,  fees and
expenses of  compliance  with  securities or blue sky laws  (including,  without
limitation,  reasonable fees and  disbursements  of counsel for the underwriters
and the Holders in connection  with blue sky  qualifications  of the Registrable
Securities,  such counsel fees not to exceed  $5,000 per  registration),  rating
agency fees, printing expenses, messenger, telephone and delivery expenses, fees
and  disbursements  of counsel  for the Company  and all  independent  certified
public  accountants and fees and disbursements of underwriters  customarily paid
by issuers or sellers of securities (but not including underwriting discounts or
commissions,  fees  of  counsel  to the  Holders  or  transfer  taxes,  if  any,
attributable to the sale of Subject Equity by Holders of such Subject Equity).

                  "REGISTRATION    STATEMENT"   shall   mean   any   appropriate
registration  statement  of the  Company  filed  with  the SEC  pursuant  to the
Securities Act which covers any of the Subject Equity pursuant to the provisions
of this Agreement and all amendments  and  supplements to any such  Registration
Statement,  including  post-effective  amendments,  in each case  including  the
Prospectus   contained   therein,   all  exhibits   thereto  and  all  materials
incorporated by reference therein.

                  "RULE  144"  shall  mean  Rule  144   promulgated   under  the
Securities  Act, as such Rule may be amended  from time to time,  or any similar
rule (other than Rule 144A) or regulation hereafter adopted by the SEC providing
for offers and sales of  securities  made in compliance  therewith  resulting in
offers and sales by subsequent  holders that are not  affiliates of an issuer of
such  securities  being  free  of  the  registration  and  prospectus   delivery
requirements of the Securities Act.

                  "RULE  144A"  shall  mean  Rule  144A  promulgated  under  the
Securities  Act, as such Rule may be amended  from time to time,  or any similar
rule (other than Rule 144) or regulation hereafter adopted by the SEC.

                  "SEC" shall mean the Securities and Exchange Commission.

                  "SECURITIES  ACT" shall mean the  Securities  Act of 1933,  as
amended from time to time.

                  "SELLING  HOLDER"  shall mean a Holder who is selling  Subject
Equity or  Registrable  Securities in accordance  with the provisions of Section
2.1 or 2.2, respectively.

                  "SUBJECT  EQUITY" shall have the meaning ascribed to such term
                  in Section 2.1(a) hereof.  "SUSPENSION  PERIOD" shall have the
                  meaning ascribed to such term in Section 2.3(a).

                  "TAG-ALONG  NOTICE"  shall have the  meaning  ascribed to such
term in Section 3.2(c) hereof.

                  "TAG-ALONG RIGHT" shall have the meaning ascribed to such term
in Section 3.2(a) hereof.

                  "TRANSFER"  shall have the  meaning  ascribed  to such term in
Section 3.2(a) hereof.

                  "TRANSFER NOTICE" shall have the meaning ascribed to such term
in Section 3.2(c) hereof.

                  "TRIGGERING DATE" shall mean the date of the consummation of a
bona fide underwritten  public offering of Common Stock, as a result of which at
least  20% of the  outstanding  shares  of  Common  Stock  are  listed on a U.S.
national securities exchange or the Nasdaq National Market.

                  "WARRANT  AGENT"  shall  mean  The  Bank of New  York  and any
successor warrant agent for the Warrants pursuant to the Warrant Agreement.

                  "WARRANT  AGREEMENT"  shall  mean  the  Supplemental   Warrant
Agreement  dated as of the date  hereof,  between  the  Company  and the Warrant
Agent, as amended or supplemented from time to time in accordance with the terms
thereof.

                  "WARRANT  SHARES"  shall mean shares of Common Stock issued or
issuable upon  exercise of the Warrants at an exercise  price of $0.01 per share
or any other  securities  issued or issuable with respect to the Warrants by way
of stock dividend or stock split or in connection  with a combination of shares,
recapitalization, merger, consolidation or other reorganization or otherwise.

                  "WARRANTS" shall have the meaning ascribed to such term in the
preamble hereof.

                   Section 2.  REGISTRATION RIGHTS.
                               -------------------

                  2.1  (a)  DEMAND  REGISTRATION.  After  the  occurrence  of an
Exercise  Event (as such  term is  defined  in the  Warrant  Agreement)  and the
completion  of an Initial  Public  Equity  Offering,  the holders of a number of
Warrants, Warrant Shares and Registrable Securities (collectively,  the "SUBJECT
EQUITY")  equivalent to at least a majority of the Warrant Shares subject to the
Warrants  originally  issued on the Issue  Date,  from time to time,  may make a
written  request  to  the  Company  to  effect  one  registration  (the  "DEMAND
REGISTRATION")  under the Securities Act of the Subject Equity. Any such request
will specify the number of shares of Subject Equity proposed to be sold and will
also specify the intended  method of disposition  thereof.  Within 10 days after
the receipt of such written request for a Demand Registration, the Company shall
notify the Holders of all Subject  Equity  that a Demand  Registration  has been
requested.  Within 45 days after receipt by any Holder of Subject Equity of such
notice from the Company,  such Holder may request in writing that such  Holder's
Subject Equity be included in such Registration  Statement and the Company shall
include  in such  Registration  Statement  the  Subject  Equity  of such  Holder
requested to be so included (the  "INCLUDED  SECURITIES").  Each such request by
such other Holders shall specify the number of Included  Securities  proposed to
be sold and the intended method of disposition thereof. Furthermore, the Company
shall  prepare,  file with the SEC and use its best  efforts  to cause to become
effective under the Securities Act within 150 days of such demand a Registration
Statement in respect of all of the Subject Equity which the Holders  request and
keep such  Registration  Statement  continuously  effective until the earlier to
occur  of  (i)  the  date  that  is  180  days  after  such  effectiveness  (the
"EFFECTIVENESS  PERIOD"),  (ii) such period of time as all of the Subject Equity
included in such  Registration  Statement  shall have been sold  thereunder  and
(iii) the Subject Equity  included in such  registration  becomes fully saleable
under paragraph (k) of Rule 144.

                  If a Demand Registration occurs during the "lock up" or "black
out"  period (not to exceed 180 days)  imposed on the Company  pursuant to or in
connection  with  any  underwriting  or  purchase   agreement   relating  to  an
underwritten  Rule  144A or  registered  public  offering  of  Common  Stock  or
securities convertible into or exchangeable or exercisable for Common Stock, the
Company  shall not be required to so notify  Holders of Subject  Equity and file
such Registration Statement with respect to the Subject Equity which the Holders
request prior to the end of such "lock up" or "black out" period, in which event
the Company  will use its best efforts to cause such  Registration  Statement to
become  effective  no later than the later of (i) 150 days after such  demand or
(ii) 30 days after the end of such "lock up" or "black out" period. In the event
of any "lock up" or "black out"  period or any  underwriting  or other  purchase
agreement, the Company shall so notify the holders of Registrable Securities.

                  Notwithstanding  the foregoing,  in lieu of filing and causing
to become  effective  the Demand  Registration,  the  Company  may  satisfy  its
obligation  with  respect  thereto  by making  and  consummating  (or having its
designee make and consummate) an offer to purchase all Subject Equity at a price
at least equal to Current Market Value (as defined in the Warrant Agreement, but
without the inclusion of clause (i)(a)  thereof),  less any applicable  Exercise
Price.

                  (b) EFFECTIVE REGISTRATION. A Registration Statement shall not
be deemed to have been  effected as a Demand  Registration  unless it shall have
been declared effective by the SEC, and the Company has complied in all material
respects with its  obligations  under this  Agreement with respect  thereto,  no
later than the later of (i) 150 days after the request for a Demand Registration
or (ii) 30 days after the end of any "lock up" or "black out"  period  described
in Section 2.1(a) hereof;  PROVIDED,  HOWEVER,  that if, after such Registration
Statement has become effective,  the offering of Subject Equity pursuant to such
Registration  Statement is or becomes the subject of any stop order,  injunction
or other order or requirement of the SEC or any similar  governmental,  judicial
or  administrative  order or requirement  that prevents,  restrains or otherwise
limits the sale of Subject Equity pursuant to such Registration  Statement,  and
such  Registration  Statement has not become  effective within a reasonable time
period thereafter,  such Registration Statement shall be deemed not to have been
effected.  If (i) the registration  requested pursuant to this Section 2.1 shall
be deemed not to have been  effected  or (ii) the Demand  Registration  does not
remain  effective under the Securities Act until at least the earlier of (A) the
end of the  Effectiveness  Period or (B) the consummation of the distribution by
the  Holders of all of the  Subject  Equity  covered  thereby,  then such Demand
Registration  shall not count towards  determining  if the Company has satisfied
its obligation to effect a Demand Registration pursuant to this Section 2.1. The
Holders of Subject  Equity shall be permitted to withdraw all or any part of the
Registrable  Securities from the Demand  Registration.  Notwithstanding any such
withdrawal by a Holder of Subject  Equity,  if the Company has complied with all
of its obligations  hereunder and has effected a Demand  Registration within 150
days after the request for such Demand  Registration,  such withdrawal shall not
require the Company to effect an additional Demand Registration.

                  (c)  SELECTION OF  UNDERWRITER.  If the Holders so elect,  the
offering of such Subject Equity pursuant to such Demand Registration shall be in
the  form  of  an  underwritten   offering.   The  Holders  making  such  Demand
Registration shall select one or more nationally  recognized firms of investment
bankers,  who  shall be  reasonably  acceptable  to the  Company,  to act as the
managing  underwriter or underwriters in connection with such offering and shall
select any additional  investment  bankers and managers to be used in connection
with the offering.

                  (d) EXPENSES.  The Company will pay all Registration  Expenses
in  connection  with the  registrations  requested  pursuant  to Section  2.1(a)
hereof.  Each Holder of Subject Equity shall pay all underwriting  discounts and
commissions and transfer  taxes, if any,  relating to the sale or disposition of
such Holder's  Subject  Equity  pursuant to a Registration  Statement  requested
pursuant to this Section 2.1.

                  2.2 (a)  PIGGY-BACK  REGISTRATION.  If at any time the Company
proposes to file a Registration  Statement under the Securities Act with respect
to an  offering  by the Company for its own account or for the account of any of
its securityholders of any class of its common equity securities (other than (i)
a registration  statement on Form S-4 or S-8 (or any substitute form that may be
adopted by the SEC) or any other publicly  registered  offering  pursuant to the
Securities  Act  pertaining  to the  issuance  of  shares  of  Capital  Stock or
securities  exercisable  therefor under any benefit plan, employee  compensation
plan, or employee or director stock purchase plan, (ii) a registration statement
filed in connection with an offer of securities solely to the Company's existing
securityholders  or (iii) a Demand  Registration),  then the Company  shall give
written notice of such proposed filing to the Holders of Registrable  Securities
as  soon as  practicable  (but  in no  event  fewer  than  15  days  before  the
anticipated  filing date or 10 days if the Company is subject to filing  reports
under the Exchange Act and able to use Form S-3 under the  Securities  Act), and
such notice shall offer such Holders the  opportunity to register such number of
shares of  Registrable  Securities  as each such  Holder may  request in writing
within 12 days (or eight days if the Company is subject to filing  reports under
the  Exchange  Act and able to use Form S-3  under  the  Securities  Act)  after
receipt of such written notice from the Company (which request shall specify the
Registrable Securities intended to be disposed of by such Selling Holder and the
intended method of distribution thereof) (a "PIGGY-BACK REGISTRATION").  In such
case  where the  intended  method of  distribution  thereof  is on a delayed  or
continuous  basis pursuant to Rule 415 under the Securities  Act, or any similar
rule that may be adopted by the SEC,  the Company  shall use its best efforts to
keep such Piggy-Back  Registration  continuously  effective under the Securities
Act in the  qualifying  jurisdictions  until at least the earlier of (A) 60 days
after the effective date thereof or (B) the  consummation of the distribution by
the Holders of all of the Registrable  Securities  covered thereby.  The Company
shall  use  its  reasonable  efforts  to  cause  the  managing   underwriter  or
underwriters,  if any,  of such  proposed  offering  to permit  the  Registrable
Securities requested to be included in a Piggy-Back  Registration to be included
on the same terms and conditions as any similar securities of the Company or any
other  securityholder   included  therein  and  to  permit  the  sale  or  other
disposition  of such  Registrable  Securities  in  accordance  with the intended
method of  distribution  thereof.  Any  Selling  Holder  shall have the right to
withdraw  its  request  for  inclusion  of  its  Registrable  Securities  in any
Registration  Statement pursuant to this Section 2.2 by giving written notice to
the Company of its request to  withdraw.  The Company may  withdraw a Piggy-Back
Registration  at any time prior to the time it becomes  effective or the Company
may elect to delay the registration;  PROVIDED,  HOWEVER, that the Company shall
give prompt written notice thereof to participating Selling Holders.

                  The Company will pay all  Registration  Expenses in connection
with each  registration  of Registrable  Securities  requested  pursuant to this
Section  2.2,  and  each  Holder  of  Registrable   Securities   shall  pay  all
underwriting  discounts and commissions and transfer taxes, if any,  relating to
the sale or disposition of such Holder's  Registrable  Securities  pursuant to a
Registration Statement effected pursuant to this Section 2.2.

                  No  registration  effected  under  this  Section  2.2,  and no
failure to effect a  registration  under this  Section  2.2,  shall  relieve the
Company of its obligation to effect a  registration  upon the request of Holders
of  Registrable  Securities  pursuant to Section  2.1 hereof,  and no failure to
effect  a  registration  under  this  Section  2.2 and to  complete  the sale of
securities  registered  thereunder  in  connection  therewith  shall relieve the
Company of any other obligation under this Agreement.

                  (b) PRIORITY IN  PIGGY-BACK  REGISTRATION.  In a  registration
pursuant  to Section  2.2 hereof  involving  an  underwritten  offering,  if the
managing  underwriter or underwriters of such  underwritten  offering shall have
informed  the Company  and the  Selling  Holders  requesting  inclusion  in such
offering,  in writing,  that in such  underwriter's or underwriters'  reasonable
opinion the total number or type of  Registrable  Securities  which the Company,
the  Selling  Holders and any other  persons  desiring  to  participate  in such
registration  intend to include in such  offering is such as to  materially  and
adversely affect the success of such offering, including the price at which such
securities  can be sold,  then the Company  shall be required to include in such
registration  only the amount of  securities  which it is so  advised  should be
included in such registration.  In such event, securities shall be registered in
such  offering in the following  order of priority:  (i) first,  the  securities
which the Company proposes to register (a) in the Initial Public Equity Offering
or (b)  pursuant to an exercise of "demand"  registration  rights  pursuant to a
contractual  commitment  of the  Company  and  (ii)  second,  provided  that  no
securities  sought to be included  by the  Company or any such Person  under the
immediately  preceding  clause (i) have been  excluded  from such  registration,
securities which have been requested to be included in such  registration by the
Company  (other  than  those  covered  by  clause  (i))  and by the  Holders  of
Registrable  Securities pursuant to this Agreement,  and the securities of other
Persons  entitled  to  exercise  "piggy-back"  registration  rights  pursuant to
contractual  commitments  of the  Company  (pro  rata  based  on the  amount  of
securities sought to be registered by the Company and such Persons).

                  If, as a result of the provisions of this Section 2.2(b),  any
Selling Holder shall not be entitled to include all Registrable  Securities in a
Piggy-Back  Registration  that such Selling Holder has requested to be included,
such  Selling  Holder may elect to withdraw  his request to include  Registrable
Securities in such registration.

                  2.3 LIMITATIONS,  CONDITIONS AND QUALIFICATIONS TO OBLIGATIONS
UNDER  REGISTRATION  COVENANTS.  The  obligations  of the  Company  set forth in
Sections  2.1 and 2.2 hereof are subject to each of the  following  limitations,
conditions and qualifications:

                  (a) The  Company  may  postpone  the filing of, or suspend the
         effectiveness  of, any  Registration  Statement or  amendment  thereto,
         suspend the use of any Prospectus and shall not be required to amend or
         supplement the Registration  Statement,  any related  Prospectus or any
         document  incorporated  therein by  reference  (other than an effective
         Registration  Statement being used for an underwritten offering) in the
         event that, and for a period (a  "SUSPENSION  PERIOD") not to exceed an
         aggregate of 60 days.  A Suspension  period used in respect of Sections
         2.1 and 2.2 may be effected only if (i) an event or circumstance occurs
         and is continuing as a result of which the Registration Statement,  any
         related Prospectus or any document incorporated therein by reference as
         then  amended or  supplemented  or proposed to be filed  would,  in the
         Company's  good  faith  judgement,  contain  an untrue  statement  of a
         material  fact or omit to state a material  fact  necessary in order to
         make the statements  therein,  in the light of the circumstances  under
         which  they  were  made,  not  misleading,  and  (ii)  (A) the  Company
         determines in its good faith  judgement  that the disclosure of such an
         event  at  such  time  would  have a  material  adverse  effect  on the
         business,  operations or prospects of the Company or (B) the disclosure
         otherwise relates to a material business  transaction which has not yet
         been publicly disclosed;  PROVIDED that the Effectiveness  Period shall
         be extended by the number of days in any  Suspension  Period;  PROVIDED
         FURTHER that the Company shall not be entitled to the  postponement  or
         suspension more than once in any 12-month period; PROVIDED FURTHER that
         the Company may suspend the effectiveness for a period not in excess of
         five  Business  Days  to  allow  for  the  updating  of  the  financial
         statements included in a Registration  Statement to the extent required
         by law, not to exceed 45 days in the aggregate in any 12-month  period.
         If the Company shall so postpone the filing of a Registration Statement
         it shall, as promptly as possible,  deliver a certificate signed by the
         chief  executive  officer of the Company to the  Selling  Holders as to
         such  determination,  and the Selling Holders shall (1) have the right,
         in the case of a  postponement  of the  filing  or  effectiveness  of a
         Registration Statement, upon the affirmative vote of the Holders of not
         less than a  majority  of the  Subject  Equity to be  included  in such
         Registration  Statement,  to withdraw the request for  registration  by
         giving  written  notice to the Company  within 10 days after receipt of
         such  notice  or (2) in the case of a  suspension  of the right to make
         sales,  receive an  extension of the  registration  period equal to the
         number of days of the suspension.  Any Demand  Registration as to which
         the withdrawal  election referred to in the preceding sentence has been
         effected  shall not be counted for purposes of the Demand  Registration
         the Company is required to effect pursuant to Section 2.1 hereof.

                  (b) The Company's  obligations  under this Agreement  shall be
         subject to the  obligations of the Selling  Holders,  which the Selling
         Holders  acknowledge,  to furnish all  information and materials and to
         take any and all actions as may be required  under  applicable  federal
         and state  securities  laws and  regulations  to permit the  Company to
         comply with such laws and regulations  and all applicable  requirements
         of the SEC and to obtain any acceleration of the effective date of such
         Registration Statement.

                  2.4  RESTRICTIONS  ON  SALE BY THE  COMPANY  AND  OTHERS.  The
Company  covenants and agrees that (i) it shall not, and that it shall not cause
or  permit  any of its  subsidiaries  to,  effect  any  public  sale  or  public
distribution  of any  securities  of the same  class as any of the  Warrants  or
Registrable  Securities or any securities  convertible  into or  exchangeable or
exercisable  for  such  securities  (or any  option  or  other  right  for  such
securities)  during the 30-day  period  prior to, and during the 180-day  period
beginning  on, the  commencement  of any  underwritten  offering  of Warrants or
Registrable  Securities  pursuant  to  a  Demand  Registration  which  has  been
requested  pursuant to this Agreement,  or a Piggy-Back  Registration  which has
been  scheduled,  prior  to the  Company  or any  of its  subsidiaries  publicly
announcing its intention to effect any such public sale or public  distribution;
(ii) the  Company  will  not,  and the  Company  will not  cause or  permit  any
subsidiary of the Company to, after the date hereof, enter into any agreement or
contract that conflicts with or limits or prohibits the full and timely exercise
by the Holders of Warrants or  Registrable  Securities  of the rights  herein to
request a Demand Registration or to join in any Piggy-Back  Registration subject
to the other terms and provisions  hereof; and (iii) upon request of the Holders
of not less than a majority of the  Warrants  or  Registrable  Securities  to be
included in such  Registration  Statement or any  underwriter,  it shall use its
reasonable best efforts to secure the written  agreement of each of its officers
and  directors  to not  effect  any public  sale or public  distribution  of any
securities of the same class as the Warrants or  Registrable  Securities (or any
securities  convertible into or exchangeable or exercisable for such securities)
or any option or other right for such securities  during the period described in
clause (i) of this Section 2.4.

                  2.5 RULE 144 AND RULE 144A.  While any Warrants or Registrable
Securities  remain  outstanding,  the Company  covenants  that it shall file the
reports  required  to be filed  by it  under  the  Exchange  Act and the  rules,
regulations and policies adopted by the SEC thereunder in a timely manner and in
accordance with the requirements of the Exchange Act. If at any time the Company
is not  required  to file such  reports,  it will  distribute  to each Holder or
beneficial owner of Warrants that are "restricted securities" within the meaning
of Rule 144 and are not  saleable  in full  under  paragraph  (k) of Rule 144 or
Registrable Securities such information as is necessary to permit sales pursuant
to Rule 144A under the  Securities  Act. The Company  further  covenants that it
will  take  such  further  action  as any  Holder  of  Warrants  or  Registrable
Securities may reasonably request,  all to the extent required from time to time
to enable  such  Holder  to sell  Warrants  or  Registrable  Securities  without
registration  under the  Securities  Act within the limitation of the exemptions
provided  by (a) Rule  144(k) and Rule 144A under the  Securities  Act,  as such
Rules may be amended from time to time,  or (b) any similar  rule or  regulation
hereafter  adopted by the SEC.  Upon the  request of any Holder of  Warrants  or
Registrable  Securities,  the Company  will in a timely  manner  deliver to such
Holder a written  statement as to whether it has complied with such  information
requirements.

                  2.6  UNDERWRITTEN  REGISTRATIONS.  No  Holder  of  Registrable
Securities  may  participate  in any  underwritten  registration  pursuant  to a
Registration  Statement filed under this Agreement unless such Holder (a) agrees
to (i) sell such Holder's Registrable Securities on the basis provided in and in
compliance  with any  underwriting  arrangements  approved by the Holders of not
less than a majority of the  Registrable  Securities to be sold  thereunder  and
(ii) comply with Rules 101,  102 and 104 of  Regulation M under the Exchange Act
and  (b)  completes  and  executes  all  questionnaires,   powers  of  attorney,
indemnities,  underwriting  agreements and other documents  reasonably  required
under the terms of such underwriting arrangements.

                  Each  Holder of  Warrants  and  Registrable  Securities  whose
Warrants and  Registrable  Securities  are covered by a  Registration  Statement
filed pursuant to Sections 2.1 and 2.2 and are to be sold thereunder  agrees, if
and  to  the  extent  reasonably   requested  by  the  managing  underwriter  or
underwriters  with respect to an  underwritten  public  offering  (including any
underwritten  public offering with respect to which registration  rights are not
available  to  holders  of the  Warrants),  not to  effect  any  public  sale or
distribution  of Warrants and  Registrable  Securities  or of  securities of the
Company  of the  same  class as any  securities  included  in such  Registration
Statement,  including  a sale  pursuant  to  Rule  144  (except  as part of such
underwritten  offering),  during  the  30-day  period  prior to,  and during the
180-day period beginning on, the closing date of each underwritten offering made
pursuant  to such  Registration  Statement,  to the extent  timely  notified  in
writing by the Company or such managing underwriter or underwriters.

                  The provisions of the foregoing  paragraph  shall not apply to
any Holders of Warrants and  Registrable  Securities if such Holder is prevented
by  applicable  statute or regulation  from  entering  into any such  agreement;
provided,  however,  that any such  Holder  shall  undertake,  in its request to
participate in any such underwritten  offering, not to effect any public sale or
distribution of any Warrants and Registrable  Securities  commencing on the date
of sale of such Warrants and  Registrable  Securities  unless it has provided 45
days'  prior  written  notice  of such  sale  or  distribution  to the  managing
underwriter or underwriters.

                  Section 3.  TRANSFERS.
                              ---------

                  3.1 GENERALLY. All Subject Equity at any time and from time to
time  outstanding  shall be held subject to the conditions and  restrictions set
forth in this Section 3. All shares of Capital  Stock now or  hereafter  held by
the Permitted  Holders shall be held subject to the conditions and  restrictions
set forth in this  Section 3. Each  Holder of Subject  Equity and the  Permitted
Holders by executing this  Agreement or by accepting a certificate  representing
Capital Stock or other indicia of ownership therefor from the Company agree with
the Company and with each other stockholder to such conditions and restrictions.

                  3.2 TAG-ALONG  RIGHTS.  (a) Prior to the Triggering Date, each
of the Holders of Subject Equity shall have the right (the "TAG-ALONG RIGHT") to
require the Proposed  Purchaser (as defined below) to purchase from each of them
all Subject  Equity owned by such Holder in the event of any proposed  direct or
indirect sale or other disposition (collectively,  a "TRANSFER") of Common Stock
or Convertible  Preferred Stock (whether now or hereafter  issued) to any Person
or Persons  (such other Person or Persons being  hereinafter  referred to as the
"PROPOSED  PURCHASER")  by any Permitted  Holder or Permitted  Holders or any of
their  Affiliates  in  any  transaction  or a  series  of  related  transactions
resulting in a Change of Control;  provided that no such  Tag-Along  Right shall
exist  as a result  of  sales  pursuant  to one or more  underwritten  offerings
registered under the Securities Act which result in a Change of Control.

                  (b)  Any  Subject  Equity  purchased  from  the  Participating
Holders  pursuant  to this  Section  3.2  shall be paid for in the same  type of
consideration  and at the same price per share of Common Stock and upon the same
terms and conditions of such proposed  Transfer of Common Stock by any Permitted
Holder or any of its Affiliates;  provided that the price per Warrant to be paid
by the Proposed  Purchaser  shall be less the aggregate  Exercise  Price of such
Warrant. If the Subject Equity to be purchased from the Permitted Holders or the
Participating  Holders includes  securities or property other than Common Stock,
the price to be paid for such securities or property shall be the same price per
share or other  denomination paid by the Proposed  Purchaser for like securities
purchased  from  any  Permitted  Holder  or any of its  Affiliates  or,  if like
securities are not purchased from any Permitted Holder or any of its Affiliates,
the Fair Market Value of such securities  determined by an independent financial
expert selected by the Company.

                  (c)  Each  Permitted  Holder  shall  notify,  or  cause  to be
notified, each Holder of Subject Equity in writing (a "TRANSFER NOTICE") of each
such proposed  Transfer at least 30 days prior to the date thereof.  Such notice
shall set forth:  (a) the name and  address of the  Proposed  Purchaser  and the
number of shares of Common Stock and other  securities,  if any,  proposed to be
transferred,  (b) the proposed amount of consideration  and terms and conditions
of payment offered by such Proposed Purchaser (if the proposed  consideration is
not  cash,  the  Transfer  Notice  shall  describe  the  terms  of the  proposed
consideration)  and (c) that either the Proposed  Purchaser has been informed of
the  "TAG-ALONG  RIGHT" and has agreed to purchase  Subject Equity in accordance
with the terms  hereof  or that the  Permitted  Holder or any of its  Affiliates
shall make such purchase.  The Tag-Along Right may be exercised by any Holder of
Subject Equity (a "PARTICIPATING HOLDER") by delivery of a written notice to the
Company and the  Permitted  Holder  that gave the  Transfer  Notice  ("TAG-ALONG
NOTICE"), within 10 days following such Holder's receipt of the Transfer Notice,
indicating its election to exercise the Tag-Along  Right.  The Tag-Along  Notice
shall state the amount of Subject Equity that such Holder proposes to include in
such  Transfer  to the  Proposed  Purchaser.  Failure by any Holder to provide a
Tag-Along  Notice  within the 10-day notice period shall be deemed to constitute
an election by such Holder not to exercise its Tag-Along Right. The closing with
respect to any sale to a Proposed  Purchaser  pursuant to this Section  shall be
held at the time and place  specified  in the  Transfer  Notice but in any event
within 60 days of the date such  Transfer  Notice  is  given;  provided  that if
through the exercise of  reasonable  efforts the Company is unable to cause such
transaction  to close  within 60 days,  such  period  may be  extended  for such
reasonable  period  of time  as may be  necessary  to  close  such  transaction.
Consummation  of the sale of Common Stock or Convertible  Preferred Stock by any
Permitted  Holder or any of its  Affiliates  to a  Proposed  Purchaser  shall be
conditioned upon consummation of the sale by each  participating  Holder to such
Proposed  Purchaser (or the Permitted  Holder) of the Subject Equity entitled to
be transferred as described above, if any.

                  (d)  [RESERVED]

                  (e) If the  Proposed  Purchaser  does not purchase the Subject
Equity  entitled to be  transferred as described in this Section 3.2 on the same
terms and  conditions as purchased  from the  Permitted  Holders or any of their
Affiliates,  then the Permitted  Holders or their Affiliates shall purchase such
Subject Equity if the Transfer occurs.  If any Subject Equity shall be sold by a
Holder  pursuant to this Section 3.2 upon the  occurrence of a Change of Control
triggered  by the sale of Common  Stock by a  Permitted  Holder,  then the other
Permitted  Holders  shall have the right to purchase  up to 50% of such  Subject
Equity.

                  (f) If at the end of 60 days  following  the  date on  which a
Transfer Notice was given, or as otherwise  extended  pursuant to the provisions
of Section  3.2(a),  the sale of Common Stock by the Permitted  Holders or their
Affiliates  and the sale of the Subject  Equity  entitled to be  transferred  as
provided  above  have not been  completed  in  accordance  with the terms of the
Proposed  Purchaser's  offer, all certificates  representing such Subject Equity
shall be returned to the  Participating  Holders,  and all the  restrictions  on
Transfer  contained in this  Agreement with respect to Common Stock owned by the
Permitted Holders and their Affiliates shall remain in effect.

                  3.3 DRAG-ALONG  RIGHTS. If at any time prior to the Triggering
Date,  one or more  Permitted  Holders  or any of  their  respective  Affiliates
determines  to sell all of the Capital  Stock of the Company  owned by them to a
Person other than a Permitted Holder or its Affiliate in a transaction resulting
in a Change of Control,  the transferring  Permitted Holder or Permitted Holders
(whether directly or through an Affiliate) shall have the right (the "DRAG-ALONG
RIGHT") to require the Holders of Subject  Equity to sell such Subject Equity to
such  transferee;  PROVIDED  THAT (i) the  consideration  to be  received by the
Holders of Subject  Equity shall be the same type of  consideration  received by
the Permitted  Holders and their Affiliates and, in any event,  shall be cash or
freely transferable marketable securities,  and (ii) after giving effect to such
transaction,  the Permitted Holder or Permitted Holders making the transfers and
their  Affiliates  shall not own,  directly or indirectly,  any Capital Stock or
rights to  purchase  Capital  Stock of the  Company  (excluding  successors  for
purposes of this section 3.3). Any Warrants or Registrable Securities,  or both,
purchased  from the Holders  thereof  pursuant to this Section 3.3 shall be paid
for at the same  price  per share of  Common  Stock and upon the same  terms and
conditions  as such proposed  transfer of Common Stock by the Permitted  Holders
and their Affiliates. The price per Warrant to be paid by the Proposed Purchaser
shall be less the  aggregate  Exercise  Price of such Warrant per share.  If the
Subject Equity to be purchased includes  securities other than Common Stock, the
price to be paid for such securities  shall be the same price per share or other
denomination paid by the proposed  purchaser for like securities  purchased from
the  Permitted  Holders  and their  Affiliates  or, if like  securities  are not
purchased from the Permitted Holders and their Affiliates, the Fair Market Value
of such securities determined by an independent financial expert selected by the
Company.

                  Section 4.  REGISTRATION  PROCEDURES.  In connection  with the
obligations of the Company with respect to any Registration  Statement  pursuant
to Sections 2.1 and 2.2 hereof, the Company shall, except as otherwise provided:

                  (a) A reasonable period of time prior to the initial filing of
         a Registration  Statement or Prospectus and a reasonable period of time
         prior to the filing of any amendment or supplement  thereto  (including
         any document that would be  incorporated  or deemed to be  incorporated
         therein  by  reference),  furnish  to  the  Holders  and  the  managing
         underwriters,  if any,  copies  of all such  documents  proposed  to be
         filed,  which documents (other than those  incorporated or deemed to be
         incorporated  by  reference)  shall be  subject  to the  review of such
         Holders,  and such  underwriters,  if any,  and cause the  officers and
         directors  of the  Company,  counsel  to the  Company  and  independent
         certified  public  accountants  to  the  Company  to  respond  to  such
         reasonable  inquiries as shall be necessary,  in the opinion of counsel
         to such underwriters,  to conduct a reasonable investigation within the
         meaning of the Securities Act;  PROVIDED THAT the foregoing  inspection
         and information gathering shall be coordinated on behalf of the Holders
         by a nationally  recognized  underwriting  firm to be designated by the
         Company. The Company shall not file any such Registration  Statement or
         related  Prospectus or any amendments or supplements  thereto which the
         Holders of a majority of the  Registrable  Securities  included in such
         Registration Statement shall reasonably object to a timely basis.

                  (b) Subject to Section 2.3, prepare and file with the SEC such
         amendments,  including post-effective  amendments, to each Registration
         Statement  as may be  necessary  to keep  such  Registration  Statement
         continuously   effective  for  the  applicable   time  period  required
         hereunder;  cause the  related  Prospectus  to be  supplemented  by any
         required  Prospectus  supplement,  and as so  supplemented  to be filed
         pursuant  to Rule  424  (or  any  similar  provisions  then  in  force)
         promulgated under the Securities Act; and comply with the provisions of
         the Securities Act and the Exchange Act with respect to the disposition
         of all securities  covered by such  Registration  Statement during such
         period in accordance  with the intended  methods of  disposition by the
         sellers thereof set forth in such Registration  Statement as so amended
         or in such Prospectus as so supplemented.

                  (c) Notify the Holders of  Registrable  Securities  to be sold
         and the managing  underwriters,  if any, promptly, and (if requested by
         any  such  person)  confirm  such  notice  in  writing,  (i)(A)  when a
         Prospectus or any Prospectus supplement or post-effective  amendment is
         proposed to be filed, and (B) with respect to a Registration  Statement
         or any  post-effective  amendment,  when the same has become effective,
         (ii)  of  any  request  by  the  SEC  or any  other  Federal  or  state
         governmental  authority for amendments or supplements to a Registration
         Statement or related Prospectus or for additional information, (iii) of
         the issuance by the SEC,  any state  securities  commission,  any other
         governmental  agency  or any  court of any stop  order  suspending  the
         effectiveness  of  such  Registration  Statement  or of  any  order  or
         injunction  suspending  or  enjoining  the use of a  Prospectus  or the
         effectiveness  of a  Registration  Statement or the  initiation  of any
         proceedings for that purpose, (iv) of the receipt by the Company of any
         notification  with respect to the  suspension of the  qualification  or
         exemption from  qualification of any of the Registrable  Securities for
         sale in any  jurisdiction,  or the  initiation  or  threatening  of any
         proceeding for such purpose, and (v) of the happening of any event, the
         existence of any  information  becoming  known that makes any statement
         made in a Registration  Statement or related Prospectus or any document
         incorporated or deemed to be incorporated  therein by reference  untrue
         in any material  respect or omit to state any material fact required to
         be stated  therein or necessary  to make the  statements  therein,  not
         misleading, and that in the case of the Prospectus, it will not contain
         any untrue  statement of a material  fact or omit to state any material
         fact required to be stated  therein or necessary to make the statements
         therein,  in light of the circumstances under which they were made, not
         misleading.

                  (d) Use its reasonable efforts to avoid the issuance of or, if
         issued,  obtain the withdrawal of any order enjoining or suspending the
         effectiveness of the Registration  Statement or the use of a Prospectus
         or the lifting of any  suspension  of the  qualification  (or exemption
         from  qualification)  of  any  of the  Registrable  Securities  covered
         thereby for sale in any  jurisdiction  described in Section 4(h) at the
         earliest practicable moment.

                  (e) If requested by the managing  underwriters,  if any, or if
         none, by the Holders of a majority of the Registrable  Securities being
         sold pursuant to such Registration Statement,  (i) promptly incorporate
         in a Prospectus supplement or post-effective amendment such information
         as  the  managing  underwriters,  if  any,  or if  none,  such  Holders
         reasonably  believe,  upon  advice  of  counsel,  which  need not be in
         writing  should be included  therein,  and (ii) subject to Section 2.3,
         make  all  required  filings  of  such  Prospectus  supplement  or such
         post-effective   amendment   under  the   Securities  Act  as  soon  as
         practicable after the Company has received  notification of the matters
         to be  incorporated  in such  Prospectus  supplement or  post-effective
         amendment; PROVIDED, HOWEVER, that the Company shall not be required to
         take any  action  pursuant  to this  Section  4(e) that  would,  in the
         opinion of counsel for the Company, violate applicable law.

                  (f) Upon  written  request  to the  Company,  furnish  to each
         Holder of Registrable  Securities to be sold pursuant to a Registration
         Statement and each managing  underwriter,  if any,  without charge,  at
         least  one  conformed  copy  of the  Registration  Statement  and  each
         amendment thereto,  including financial  statements and schedules,  all
         documents   incorporated  or  deemed  to  be  incorporated  therein  by
         reference,   and  all  exhibits  to  the  extent  reasonably  requested
         (including those previously  furnished or incorporated by reference) as
         soon as practicable after the filing of such documents with the SEC.

                  (g) Deliver to each  Holder of  Registrable  Securities  to be
         sold   pursuant  to  a   Registration   Statement   and  each  managing
         underwriter,  if any, without charge, as many copies of each Prospectus
         (including  each form of  Prospectus)  and each amendment or supplement
         thereto as such. Persons may reasonably request; and the Company hereby
         consents to use of such  Prospectus  and each  amendment or  supplement
         thereto and each document  supplemental  thereto by each of the selling
         Holders of Registrable  Securities and the  underwriters or agents,  if
         any,  in  connection  with the  offering  and  sale of the  Registrable
         Securities  covered by such  Prospectus and any amendment or supplement
         thereto.

                  (h) Prior to any offering of Registrable  Securities,  use its
         reasonable efforts to register or qualify or cooperate with the Holders
         of  Registrable  Securities  to be sold,  the managing  underwriter  or
         underwriters,  if any, and their respective  counsel in connection with
         the registration or qualification  (or exemption from such registration
         or  qualification)  of such  Registrable  Securities for offer and sale
         under the securities or Blue Sky laws of such jurisdictions as any such
         Holder or underwriter  reasonably  requests in writing;  keep each such
         registration or qualification (or exemption therefrom) effective during
         the period such Registration Statement is required to be kept effective
         hereunder  and do any  and  all  other  acts  or  things  necessary  or
         advisable  to  enable  the  disposition  in such  jurisdictions  of the
         Registrable   Securities   covered  by  the   applicable   Registration
         Statement; PROVIDED, HOWEVER, that the Company shall not be required to
         (i) qualify  generally to do business in any  jurisdiction  where it is
         not then so qualified or (ii) take any action that would  subject it to
         general  service of process  in any such  jurisdiction  where it is not
         then so subject or to taxation in any  jurisdiction  where it is not so
         subject.

                  (i) In  connection  with any sale or transfer  of  Registrable
         Securities  that  will  result  in  such  securities  no  longer  being
         Registrable  Securities,  cooperate  with the  Holders  of  Registrable
         Securities  and the managing  underwriters,  if any, to facilitate  the
         timely   preparation   and   delivery  of   certificates   representing
         Registrable  Securities to be sold, which  certificates  shall not bear
         any restrictive  legends whatsoever and shall be in a form eligible for
         deposit with The Depository Trust Company  ("DTC");  and to enable such
         Registrable  Securities to be in such  denominations  and registered in
         such names as the managing underwriter or underwriters, if any, or such
         Holders may reasonably  request at least two business days prior to any
         sale of Registrable Securities.

                  (j) Subject to Section 2.3,  upon the  occurrence of any event
         contemplated  by Section  4(c)(v)  above,  as promptly  as  practicable
         prepare  a  supplement  or  amendment,   including  if   appropriate  a
         post-effective amendment to each Registration Statement or a supplement
         to the related Prospectus or any document  incorporated or deemed to be
         incorporated therein by reference, and file any other required document
         so that, as thereafter  delivered,  such Prospectus will not contain an
         untrue  statement of a material  fact or omit to state a material  fact
         required  to be stated  therein  or  necessary  to make the  statements
         therein,  in light of the circumstances under which they were made, not
         misleading.

                  (k) Prior to the effective date of a  Registration  Statement,
         (i)  provide  the  registrar  for  the   Registrable   Securities  with
         certificates  for such  securities  in a form eligible for deposit with
         DTC and (ii) provide a CUSIP number for such securities.

                  (l)  Enter  into such  agreement  (including  an  underwriting
         agreement  in  such  form,  scope  and  substance  as is  customary  in
         underwritten  offerings) and take all such other reasonable  actions in
         connection  therewith  (including  those  reasonably  requested  by the
         managing  underwriters,  if any,  or the  Holders of a majority  of the
         Registrable  Securities  being sold) in order to expedite or facilitate
         the disposition of such Registrable Securities,  and, whether or not an
         underwriting   agreement  is  entered  into  and  whether  or  not  the
         registration   is  an   underwritten   registration,   (i)  make   such
         representations  and  warranties  to the  Holders  of such  Registrable
         Securities and the underwriter or underwriters, if any, with respect to
         the  business  of the  Company  and  the  subsidiaries  of the  Company
         (including  with  respect to  businesses  or assets  acquired  or to be
         acquired by any of them),  and the Registration  Statement,  Prospectus
         and documents,  if any,  incorporated  or deemed to be  incorporated by
         reference  therein,  in each case,  in form,  substance and scope a are
         customarily made by issuers to underwriters in underwritten  offerings,
         and confirm  the same if any when  requested;  (ii) obtain  opinions of
         counsel to the Company and updates  thereof (which counsel and opinions
         (in form, scope and substance) shall be reasonably  satisfactory to the
         managing  underwriters,  if any,  addressed to each  selling  Holder of
         Registrable Securities and each of the underwriters,  if any), covering
         the matters  customarily  covered in opinions requested in underwritten
         offerings and such other matters as may be reasonably requested by such
         underwriters;  (iii) use their  reasonable  efforts to obtain customary
         "cold  comfort"  letters  and  updates  thereof  from  the  independent
         certified  public  accountants  of the Company (and, if necessary,  any
         other independent certified public accountants of any subsidiary of the
         Company or of any business  acquired by the Company for which financial
         statements and financial  data are, or are required to be,  included in
         the Registration  Statement),  addressed (where reasonably possible) to
         each  Selling  Holder  of  Registrable   Securities  and  each  of  the
         underwriters, if any, such letters to be in customary form and covering
         matters of the type  customarily  covered in "cold comfort"  letters in
         connection  with  underwritten  offerings;   (iv)  if  an  underwriting
         agreement  is  entered   into,   the  same  shall   contain   customary
         indemnification  provisions  and  procedures  no less  favorable to the
         Selling  Holder and the  underwriters,  if any, than those set forth in
         Section 5 hereof (or such other provisions and procedures acceptable to
         Holders  of a  majority  of  Registrable  Securities  covered  by  such
         Registration  Statement and the managing underwriter,  if any); and (v)
         deliver such documents and certificates as may be reasonably  requested
         by the Holders of a majority of the Registrable  Securities  being sold
         and the managing underwriters or underwriters to evidence the continued
         validity of the  representations and warranties made pursuant to clause
         (i)  above  and  evidence  compliance  with  any  customary  conditions
         contained in the  underwriting  agreement or other  agreements  entered
         into by the Company. The above shall be done at each closing under such
         underwriting  agreement  or other  agreements,  or as and to the extent
         required thereunder.

                  (m) Make available for inspection by a  representative  of the
         selling   Holders   of   Registrable   Securities,    any   underwriter
         participating  in any such  disposition of Registrable  Securities,  if
         any,  and any  attorney,  consultant  or  accountant  retained  by such
         representative  of the selling  Holders of  Registrable  Securities  or
         underwriter  (collectively,  the  "INSPECTORS"),  at the offices  where
         normally kept, during the reasonable  business hours, all financial and
         other  records,  pertinent  corporate  documents and  properties of the
         Company and the subsidiaries of the Company  (including with respect to
         businesses  and assets  acquired  or to be  acquired to the extent that
         such information is available to the Company),  and cause the officers,
         directors,  agents and employees of the Company and its subsidiaries of
         the Company  (including  with respect to businesses and assets acquired
         or to be acquired to the extent that such  information  is available to
         the  Company)  to  supply  all  information  in  each  case  reasonably
         requested by any such  Inspector in connection  with such  Registration
         Statement;  provided,  however,  that such persons shall first agree in
         writing with the Company that any information that is reasonably and in
         good faith  designated by the Company in writing as confidential at the
         time of delivery of such information shall be kept confidential by such
         Persons, unless (i) disclosure of such information is required by court
         or  administrative  order or is  necessary  to respond to  inquiries of
         regulatory authorities, (ii) disclosure of such information is required
         by  law  (including  any  disclosure   requirements  pursuant  to  U.S.
         securities  laws in  connection  with the  filing  of the  Registration
         Statement or the use of any Prospectus), (iii) such information becomes
         generally  available  to  the  public  other  than  as  a  result  of a
         disclosure or failure to safeguard  such  information by such person or
         (iv) such  information  becomes  available to such person from a source
         other than the  Company  and its  subsidiaries  and such  source is not
         bound by a  confidentiality  agreement;  AND PROVIDED  FURTHER that the
         foregoing  investigation  shall be coordinated on behalf of the selling
         Holders  of   Registrable   Securities   by  a  nationally   recognized
         underwriting firm to be designated by the Company.

                  (n) Comply with all applicable rules, regulations and policies
         of the SEC and make generally available to its securityholders earnings
         statements satisfying the provisions of Section 11(a) of the Securities
         Act and Rule 158  thereunder no later than 60 days after the end of any
         12-month  period (or 135 days after the end of any  12-month  period if
         such period is a fiscal year) (i)  commencing  at the end of any fiscal
         quarter in which  Registrable  Securities are sold to an underwriter or
         to underwriters in a firm commitment or reasonable efforts underwritten
         offering and (ii) if not sold to an underwriter or to  underwriters  in
         such an  offering,  commencing  on the first  day of the  first  fiscal
         quarter  of the  Company  after  the  effective  date  of the  relevant
         Registration  Statement,  which  statements  shall  cover such  period,
         consistent with the requirements of Rule 158 under the Securities Act.

                  (o)  Use its  reasonable  efforts  to  cause  all  Registrable
         Securities relating to such Registration Statement to be listed on each
         securities exchange,  if any, on which similar securities issued by the
         Company are then listed.

                  (p) Cooperate  with each seller of  Registrable  Securities to
         facilitate  the  timely   preparation   and  delivery  of  certificates
         representing  Registrable  Securities  to be sold and not  bearing  any
         restrictive legends and registered in such names as the Selling Holders
         may reasonably  request at least two business days prior to the closing
         of any sale of Registrable Securities.

                  (q)  Cooperate  with  each  seller of  Registrable  Securities
         covered by any  Registration  Statement and each  underwriter,  if any,
         participating in the disposition of such Registrable Securities and its
         respective  counsel in connection with any filings  required to be made
         with the National Association of Securities Dealers, Inc.

                  The Company may require a Holder of Registrable  Securities to
be  included  in a  Registration  Statement  to  furnish  to  the  Company  such
information   regarding  (i)  the  intended   method  of  distribution  of  such
Registrable  Securities  (ii) such Holder and (iii) the  Registrable  Securities
held by such Holder as is required by law to be  disclosed  in such  Registrable
Statement  and the Company  may exclude  from such  Registration  Statement  the
Registrable  Securities  of any  Holder who fails to  furnish  such  information
within a reasonable time after receiving such request.

                  If any such  Registration  Statement  refers to any  Holder by
name or otherwise  as the Holder of any  securities  of the  Company,  then such
Holder shall have the right to require (i) the insertion therein of language, in
form and substance  reasonably  satisfactory to such Holder,  to the effect that
the  holding  by such  Holder of such  securities  is not to be  construed  as a
recommendation  by  such  Holder  of the  investment  quality  of the  Company's
securities covered thereby and that such holding does not imply that such Holder
will assist in meeting any future financial requirements of the Company, or (ii)
in the event that such  reference  to such  Holder by name or  otherwise  is not
required by the Securities  Act, the deletion of the reference to such Holder in
such  amendment or supplement to the  Registration  Statement  filed or prepared
subsequent to the time that such reference ceases to be required.

                  Each Holder of Registrable Securities agrees by acquisition of
such  Subject  Equity  that,  upon receipt of any notice from the Company of the
happening of any event of the kind  described in Section  4(c)(ii),  4(c)(iv) or
4(c)(v)  hereof,  such Holder will  forthwith  discontinue  disposition  of such
Subject Equity covered by the  Registration  Statement or Prospectus  until such
Holder's  receipt  of the  copies  of the  supplemented  or  amended  Prospectus
contemplated  by Section  4(j)  hereof,  or until it is advised in writing  (the
"ADVICE")  by the  Company  that  the use of the  applicable  Prospectus  may be
resumed,   and  in  either  case  has  received  copies  of  any  additional  or
supplemental  filings  that are  incorporated  or deemed to be  incorporated  by
reference in such  Prospectus.  If the Company  shall give any such notice,  the
Effectiveness Period shall be extended by the number of days during such periods
from and  including  the date of the giving of such notice to and  including the
date when each seller of Subject Equity covered by such  Registration  Statement
shall have  received (x) the copies of the  supplemented  or amended  Prospectus
contemplated by Section 4(j) hereof or (y) the Advice,  and, in either case, has
received copies of any additional or supplemental  filings that are incorporated
or deemed to be incorporated by reference in such Prospectus.

                  Holders  of the  Subject  Equity  shall be  obligated  to keep
confidential   the  existence  of  a  Suspension   Period  or  any  confidential
information communicated by the Company to the Holder with respect thereto.

                  Section 5.  INDEMNIFICATION AND CONTRIBUTION.  (a) The Company
shall  indemnify  and hold  harmless,  each  Selling  Holder (in its capacity as
Selling Holder),  each  underwriter,  if any, who participates in an offering of
Registrable  Securities,  their  respective  affiliates,  and  their  respective
directors, officers, employees, agents and each Person, if any, who controls any
of such  parties  within the meaning of Section 15 of the 1933 Act or Section 20
of the 1934 Act as follows:

                  (i) against  any and all loss,  liability,  claim,  damage and
         expense whatsoever, as incurred, arising out of any untrue statement or
         alleged   untrue   statement  of  a  material  fact  contained  in  any
         Registration  Statement  (or any amendment  thereto)  pursuant to which
         Registrable  Securities were registered  under the 1933 Act,  including
         all documents  incorporated  therein by  reference,  or the omission or
         alleged  omission  therefrom of a material  fact  required to be stated
         therein or necessary to make the  statements  therein not misleading or
         arising out of any untrue  statement or alleged  untrue  statement of a
         material  fact  contained  in  any  Prospectus  (or  any  amendment  or
         supplement  thereto) or the omission or alleged omission therefrom of a
         material fact necessary in order to make the statements therein, in the
         light of the circumstances under which they were made, not misleading;

                  (ii) against any and all loss,  liability,  claim,  damage and
         expense whatsoever,  as incurred, to the extent of the aggregate amount
         paid  in  settlement  of  any  litigation,   or  any  investigation  or
         proceeding by any governmental agency or body, commenced or threatened,
         or of any claim  whatsoever,  in each case,  based upon any such untrue
         statement  or  omission,  or  any  such  alleged  untrue  statement  or
         omission;  provided  that  (subject  to  Section  5(d)  below) any such
         settlement is effected with the written consent of the Company; and

                  (iii)  against any and all  expenses  whatsoever,  as incurred
         (including fees and  disbursements of counsel chosen by any indemnified
         party),  reasonably  incurred in investigating,  preparing or defending
         against any litigation,  or investigation or proceeding by any court or
         governmental  agency or body,  commenced  or  threatened,  or any claim
         whatsoever  based upon any such untrue  statement or  omission,  or any
         such alleged untrue statement or omission,  to the extent that any such
         expense  is not paid  under  subparagraph  (i) or (ii) of this  Section
         5(a);

PROVIDED,  HOWEVER,  that this  indemnity  agreement does not apply to any loss,
liability,  claim,  damage or expense to the extent (i) arising out of an untrue
statement  or omission or alleged  untrue  statement  or omission (A) made in or
omitted from a preliminary Prospectus or Registration Statement and corrected or
included in a subsequent  Prospectus or Registration  Statement or any amendment
or  supplement  thereto  made in reliance  upon and in  conformity  with written
information  furnished  to the  Company by the  Selling  Holders of  Registrable
Securities, any Holder, or any underwriter expressly for use in the Registration
Statement  (or any  amendment  thereto) or the  Prospectus  (or any amendment or
supplement  thereto) or (B) resulting  from the use of the  Prospectus  during a
period  when  the use of the  Prospectus  has  been  suspended  or is  otherwise
unavailable  for sales  thereunder in accordance with Sections  2.1(b),  2.1(c),
2.2(a),  2.3(a), 2.4, 2.6 or 4(c) hereof,  PROVIDED,  in each case, that Holders
received prior notice of such suspension or other unavailability.  The foregoing
indemnity with respect to any untrue statement contained in or any omission from
a  Prospectus  shall not inure to the  benefit  of any  Selling  Holder  (in its
capacity as Selling  Holder),  or any person who controls  such party within the
meaning  of  Section  15 of the 1933 Act or Section 20 of the 1934 Act from whom
the  person  asserting  any such  loss,  liability,  claim,  damage  or  expense
purchased any of the Registrable  Securities that are the subject  thereof,  was
not sent or given a copy of such Prospectus (as amended or supplemented) by such
Selling  Holder (in its  capacity as Selling  Holder) to the extent such Selling
Holder (in its  capacity as Selling  Holder) was required by law to deliver such
Prospectus as amended or supplemented,  at or prior to the written  confirmation
of the sale of such Registrable Securities and the untrue statement contained in
or  the  omission  from  such  Prospectus  was  corrected  in  such  amended  or
supplemented Prospectus,  unless such failure resulted from noncompliance by the
Company with its  obligations  hereunder to furnish such Selling  Holder (in its
capacity  as  Selling  Holder),  with  copies of such  Prospectus  as amended or
supplemented.

                  (b) In the case of any registration of Registrable Securities,
each Selling  Holder  agrees,  severally and not jointly,  to indemnify and hold
harmless the Company,  each Initial  Purchaser,  each  underwriter,  if any, who
participates  in an offering of  Registrable  Securities  and the other  Selling
Holders and each of their  respective  directors  and officers  (including  each
officer of the Company who signed the  Registration  Statement) and each Person,
if any, who controls the Company, any Initial Purchaser,  any underwriter or any
other Selling Holder within the meaning of Section 15 of the 1933 Act or Section
20 of the 1934 Act,  against  any and all loss,  liability,  claim,  damage  and
expense whatsoever  described in the indemnity contained in Section 5(a) hereof,
as incurred, but only with respect to untrue statements or omissions, or alleged
untrue  statements  or  omissions,  made in the  Registration  Statement (or any
amendment thereto) or the Prospectus (or any amendment or supplement thereto) in
reliance  upon and in  conformity  with  written  information  furnished  to the
Company by such Holder expressly for use in the  Registration  Statement (or any
amendment thereto),  or the Prospectus (or any amendment or supplement thereto);
PROVIDED,  HOWEVER, that no such Holder shall be liable for any claims hereunder
in excess of the amount of net proceeds received by such Holder from the sale of
Registrable Securities pursuant to such Registration Statement.

                  (c) In case any action shall be commenced involving any Person
in respect of which indemnity may be sought pursuant to either  paragraph (a) or
(b) above, such Person (the  "indemnified  party") shall give notice as promptly
as  reasonably  practicable  to each Person  against whom such  indemnity may be
sought (the  "indemnifying  party"),  but  failure to so notify an  indemnifying
party shall not relieve such indemnifying party from any liability  hereunder to
the extent it is not materially  prejudiced as a result thereof and in any event
shall not  relieve it from any  liability  which it may have  otherwise  than on
account of this indemnity agreement. In the case of parties indemnified pursuant
to Section 5(a) above,  counsel for such indemnified  parties shall be chosen by
such indemnified  parties,  and, in the case of parties indemnified  pursuant to
Section 5(b) above, counsel to such indemnified parties shall be selected by the
Company. An indemnifying party may participate at its own expense in the defense
of such action; PROVIDED,  HOWEVER, that counsel to the indemnifying party shall
not (except  with the consent of the  indemnified  party) also be counsel to the
indemnified party. In no event shall the indemnifying party or parties be liable
for the fees and  expenses of more than one  counsel  (in  addition to any local
counsel)  separate  from  their  own  counsel  for all  indemnified  parties  in
connection with any one action or separate but similar or related actions in the
same jurisdiction  arising out of the same general allegations or circumstances.
No  indemnifying  party  shall,   without  the  prior  written  consent  of  the
indemnified  parties,  settle  or  compromise  or  consent  to the  entry of any
judgment with respect to any litigation,  or any  investigation or proceeding by
any  governmental  agency  or  body,  commenced  or  threatened,  or  any  claim
whatsoever in respect of which  indemnification  or contribution could be sought
under  this  Section 5 (whether  or not the  indemnified  parties  are actual or
potential  parties thereof),  unless such settlement,  compromise or consent (i)
includes an unconditional  release of each indemnified  party from all liability
arising out of such litigation, investigation, proceeding or claim and (ii) does
not include a statement as to or an admission of fault, culpability or a failure
to act by or on behalf of any indemnified party.

                  (d) If at any time an  indemnified  party shall have requested
an indemnifying  party to reimburse the indemnified  party for fees and expenses
of  counsel,  such  indemnifying  party  agrees  that it shall be liable for any
settlement  of the nature  contemplated  by  Section  5(a)(ii)  hereof  effected
without its written  consent if (i) such settlement is entered into more than 45
days after receipt by such  indemnifying  party of the aforesaid  request,  (ii)
such  indemnifying  party  shall  have  received  notice  of the  terms  of such
settlement  at least 30 days prior to such  settlement  being  entered  into and
(iii) such  indemnifying  party shall not have reimbursed such indemnified party
in  accordance  with  such  request  prior  to  the  date  of  such  settlement.
Notwithstanding  the  immediately   preceding  sentence,   if  at  any  time  an
indemnified  party shall have requested an  indemnifying  party to reimburse the
indemnified party for fees and expenses of counsel,  an indemnifying party shall
not be liable for any settlement of the nature  contemplated by Section 5(a)(ii)
effected  without its consent if such  indemnifying  party (i)  reimburses  such
indemnified  party in  accordance  with such  request to the extent it considers
such  request  to  be  reasonable  and  (ii)  provides  written  notice  to  the
indemnified  party  substantiating  the unpaid balance as unreasonable,  in each
case prior to the date of such settlement.

                  (e)  If  the  indemnification  provided  for  in  any  of  the
indemnity  provisions set forth in this Section 5 is for any reason  unavailable
to or  insufficient  to hold  harmless  an  indemnified  party in respect of any
losses, liabilities,  claims, damages or expenses referred to therein, then each
indemnifying  party shall  contribute  to the  aggregate  amount of such losses,
liabilities, claims, damages and expenses incurred by such indemnified party, as
incurred,  (i) in such  proportion  as is  appropriate  to reflect the  relative
benefits  received by such  indemnifying  party or parties on the one hand,  and
such  indemnified  party or  parties on the other and from the  offering  of the
Registrable  Securities  included in such  offering;  or (ii) if the  allocation
provided by clause (i) is not permitted by applicable law, in such proportion as
is appropriate to reflect not only the relative  benefits  referred to in clause
(i) above but also the relative fault of such  indemnifying  party or parties on
the one hand,  and such  indemnified  party or  parties  on the other  hand,  in
connection  with the  statements  or  omissions  which  resulted in such losses,
liabilities,  claims,  damages  or  expenses,  as  well  as any  other  relevant
equitable  considerations.  The  relative  fault of such  indemnifying  party or
parties on the one hand, and such indemnified party or parties on the other hand
shall be determined by reference to, among other things, whether any such untrue
or alleged untrue  statement of a material fact or omission or alleged  omission
to state a material fact relates to  information  supplied by such  indemnifying
party or parties and such indemnified party or parties and the parties' relative
intent,  knowledge,  access to information and opportunity to correct or prevent
such  statement  or  omission.  The Company  and the Holders of the  Registrable
Securities  agree  that it  would  not be just  and  equitable  if  contribution
pursuant to this Section 5 were determined by PRO RATA  allocation  (even if the
Selling Holders of Registrable  Securities  were treated as one entity,  and the
Holders were treated as one entity,  for such  purpose) or by another  method of
allocation which does not take account of the equitable  considerations referred
to above in Section 5. The  aggregate  amount of  losses,  liabilities,  claims,
damages and expenses  incurred by an indemnified  party and referred to above in
this Section 5 shall be deemed to include any legal or other expenses reasonably
incurred by such  indemnified  party in  investigating,  preparing  or defending
against any  litigation,  or any  investigation  or proceeding by a governmental
agency or body, commenced or threatened,  or any claim whatsoever based upon any
such untrue or alleged  untrue  statement  or omission or alleged  omission.  No
Person  guilty of  fraudulent  misrepresentation  (within the meaning of Section
11(f) of the 1993 Act) shall be entitled to contribution from any Person who was
not guilty of such fraudulent misrepresentation. For purposes of this Section 5,
each Person, if any, who controls a Holder within the meaning of this Section 15
of the 1933 Act or  Section  20 of the 1934 Act  shall  have the same  rights to
contribution as such Holder,  and each director of the Company,  each officer of
the Company who signed the Registration Statement,  and each Person, if any, who
controls the Company within the meaning of Section 15 of the 1933 Act or Section
20 of the 1934 Act shall have the same rights to contribution as the Company.

                  Section 6. MISCELLANEOUS.
                             -------------

                  (a)  REMEDIES.  In the event of a breach by the Company of any
of its obligations under this Agreement,  each Holder and Permitted Holders,  in
addition to being entitled to exercise all rights provided herein, or granted by
law, including recovery of damages,  will be entitled to specific performance of
its rights under this Agreement.  The Company agrees that monetary damages would
not be adequate  compensation  for any loss incurred by reason of a breach by it
of any of the provisions of this Agreement and hereby further agrees that in the
event of any action for specific performance in respect of such breach, it shall
waive the defense that a remedy at large would be adequate.

                  (b) NO INCONSISTENT AGREEMENTS.  The Company and the Permitted
Holders will not enter into any agreement which is inconsistent  with the rights
granted to the Holders of Warrants and Registrable  Securities in this Agreement
or otherwise  conflicts  with the provisions  hereof.  The rights granted to the
Holders  hereunder do not in any way conflict with and are not inconsistent with
the rights granted to the holders of the Company's  other issued and outstanding
securities, if any, under any such agreements.

                  (c) NO PIGGY-BACK ON DEMAND  REGISTRATIONS.  The Company shall
not  grant  to any of its  securityholders  (other  than  the  Holders  in  such
capacity)  the right to  include  any of their  securities  in any  Registration
Statement filed pursuant to a Demand Registration.

                  (d) AMENDMENTS AND WAIVERS.  The provisions of this Agreement,
including  the  provisions  of this  sentence,  may not be amended,  modified or
supplemented,  and waivers or consents to departures from the provisions  hereof
may not be given,  otherwise than with the prior written  consent of the Holders
and  Permitted  Holders  of not less  than a  majority  of the then  outstanding
Warrants and each class and series of Registrable Securities and with respect to
Sections affecting the rights or obligations of the Permitted Holders hereunder,
the Permitted Holders who hold not less than a majority of shares of the capital
stock held by the Permitted Holders;  PROVIDED,  HOWEVER, that, for the purposes
of this Agreement,  Warrants and Registrable Securities that are owned, directly
or  indirectly,  by the Company or any of their  Affiliates are not deemed to be
outstanding.  Notwithstanding the foregoing,  a waiver or consent to depart from
the provisions  hereof with respect to a matter that relates  exclusively to the
rights of one or more Holders and  Permitted  Holders and that does not directly
or indirectly affect the rights of other Holders and other Permitted Holders may
be given by a  majority  of the  Holders  and  Permitted  Holders  so  affected;
PROVIDED,  HOWEVER,  that the  provisions  of this  sentence may not be amended,
modified  or  supplemented  except  in  accordance  with the  provisions  of the
immediately  preceding sentence.  Notwithstanding  the foregoing,  no amendment,
modification,  supplement,  waiver or consent with respect to Section 5 shall be
made or given  otherwise than the prior written  consent of each Person affected
thereby.

                  (e) NOTICES. All notices and other communications provided for
or permitted  hereunder  shall be made in writing by hand  delivery,  registered
first-class mail, telecopier, or any courier guaranteeing overnight delivery (i)
if to a Holder or a Permitted Holder, at the most current address of such Holder
or such  Permitted  Holder as set forth in the  register for the Warrants or the
Registrable  Securities or the securities  owned by the Permitted  Holders,  and
(ii) if to the Company, as provided in the Warrant Agreement.

                  All such  notices and  communications  shall be deemed to have
been duly given:  at the time delivered by hand, if personally  delivered;  five
Business Days after being  deposited in the mail,  postage  prepaid,  if mailed;
when answered back, if telexed; when receipt is acknowledged, if telecopied; and
on the next  Business  Day, if timely  delivered to an air courier  guaranteeing
overnight delivery.

                  (f) SUCCESSORS AND ASSIGNS.  This Agreement shall inure to the
benefit of and be binding upon the successors  and permitted  assigns of each of
the parties and shall inure to the benefit of each Holder.  If any transferee of
any Holder  shall  acquire  Registrable  Securities,  in any manner,  whether by
operation of law or  otherwise,  such  Warrants,  Warrants  Shares or securities
shall be held subject to all of the terms of this  Agreement,  and by taking and
holding such securities such Person shall be conclusively  deemed to have agreed
to be bound by and to perform all of the terms and  provisions of this Agreement
and such Person  shall be entitled to receive the benefits  hereof.  The Company
may not assign  any of its rights or  obligations  hereunder  without  the prior
written  consent of each Holder of Registrable  Securities and each  indemnified
party under  Section  5(a).  Notwithstanding  the  foregoing,  no  successor  or
assignee of the Company shall have any rights granted under the Agreement  until
such person shall  acknowledge its rights and obligations  hereunder by a signed
written statement of such person's acceptance of such rights and obligations.

                  (g) COUNTERPARTS. This Agreement may be executed in any number
of  counterparts  and by the parties  hereto in separate  counterparts,  each of
which when so executed  shall be deemed to be an original and all of which taken
together shall constitute one and the same Agreement.

                  (h)  GOVERNING LAW.  THIS AGREEMENT SHALL BE GOVERNED BY AND
                       -------------
 CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

                  (i)  SEVERABILITY.   If  any  term,  provision,   covenant  or
restriction of this Agreement is held by a court of competent jurisdiction to be
invalid, illegal, void or unenforceable, the remainder of the terms, provisions,
covenants  and  restrictions  set forth  herein  shall  remain in full force and
effect and shall in no way be affected, impaired or invalidated, and the parties
hereto shall use their best efforts to find and employ an  alternative  means to
achieve the same or substantially  the same result as that  contemplated by such
term, provision,  covenant or restriction.  It is hereby stipulated and declared
to be the  intention of the parties that they would have  executed the remaining
terms, provisions, covenants and restrictions without including any of such that
may be hereafter declared invalid, illegal, void or unenforceable.

                  (j)  HEADINGS.   The  headings  in  this   Agreement  are  for
convenience  of  reference  only and  shall not limit or  otherwise  affect  the
meaning  hereof.  All  references  made  in  this  Agreement  to  "Section"  and
"paragraph"  refer  to such  Section  or  paragraph  of this  Agreement,  unless
expressly stated otherwise.

                  (k)  ENTIRE  AGREEMENT.  This  Agreement,  together  with  the
Warrant  Agreement,  is intended by the parties as a final  expression  of their
agreement,  and is  intended to be a complete  and  exclusive  statement  of the
agreement  and  understanding  of the  parties  hereto in respect of the subject
matter  contained herein and therein.  This Agreement and the Warrant  Agreement
supersede  all prior  agreements  and  understandings  between the parties  with
respect to such subject matter.

                  (l) SECURITIES HELD BY THE COMPANY OR ITS AFFILIATES. Whenever
the  consent or approval of Holders of a  specified  percentage  of  Registrable
Securities or Warrants is required hereunder, Registrable Securities or Warrants
held by the Company or by any of its affiliates (as such term is defined in Rule
405 under the  Securities  Act) shall not be counted (in either the numerator or
the  denominator)  in determining  whether such consent or approval was given by
the Holders of such required percentage.



<PAGE>



                  IN WITNESS  WHEREOF,  the parties have executed this Agreement
as of the date first written above.

                                           PATHNET TELECOMMUNICATIONS, INC.

                                           By: /s/ W. R. Smedberg V
                                           ------------------------------------
                                           Name:
                                           Title:

                                           SPECTRUM EQUITY INVESTORS, L.P.,
                                           In its Capacity as a Permitted Holder

                                           By:/s/ Chris J Maroni
                                           ------------------------------------
                                           Name:  K. J. Maroni
                                           Title: illegible

                                           NEW ENTERPRISE ASSOCIATES VI,Limited
                                           Partnership,
                                           In its Capacity as a Permitted Holder

                                           By: /s/ illegible
                                           ------------------------------------
                                           Name:
                                           Title:

                                           ONSET ENTERPRISE ASSOCIATES II, L.P.,
                                           In its Capacity as a Permitted Holder
                                           By:

                                           By: /s/ R Kuhling
                                           ------------------------------------
                                           Name: Robert F. Kuhling
                                           Title: General Partner
                                                  The General Partner of
                                                  ONSET Enterprise Associates II
                                                       L.P.

                                           FBR TECHNOLOGY VENTURE PARTNERS,L.P.,
                                           In its Capacity as a Permitted Holder

                                           By: /s/ illegible
                                           ------------------------------------
                                           Name:  Gene Riechers
                                                  Managing Director
                                                  FBR Technology Venture
                                                       Partners, L.P.


<PAGE>


                                           TORONTO DOMINION CAPITAL (USA) INC.,
                                           In its Capacity as a Permitted Holder

                                           By:/s/ Martha L. Gariepy
                                           ------------------------------------
                                           Name:  Martha L. Gariepy
                                                  Secretary/Treasurur

                                           GROTECH PARTNERS IV, L.P.,
                                           In its Capacity as a Permitted Holder

                                           By:/s/ Patrick J. Kerins
                                           ------------------------------------
                                           Name: Patrick J. Kerins
                                           Title: Managing Director

                                             /s/ Richard Jalkut
                                           ------------------------------------
                                           Richard A. Jalkut







        Portions  of this exhibit have been  omitted and filed  separately  with
           the Securities and Exchange Commission. These portions are
                             designated "[ * * * ]."


                                                                    Exhibit 10.3

                          FIBER OPTIC ACCESS AGREEMENT
                                     BETWEEN
                        PATHNET TELECOMMUNICATIONS, INC.
                                       AND
              THE BURLINGTON NORTHERN AND SANTA FE RAILWAY COMPANY


            This fiber optic access  agreement  ("Agreement") is entered into as
of this 30th day of  March, 2000  between  Pathnet  Telecommunications,  Inc., a
Delaware  corporation  ("Pathnet")  and The  Burlington  Northern  and  Santa Fe
Railway Company, a Delaware corporation ("BNSF").

            WHEREAS, BNSF has certain ownership interests in certain of its rail
corridors covering the western United States,  BNSF's rail network consisting of
over 30,000 route miles in 28 states and two Canadian provinces;

            WHEREAS, Pathnet desires to obtain from BNSF the right to lease from
BNSF,  on  specified   terms  and  conditions,   strips  of  land   constituting
approximately [ * * * ] route miles, in the aggregate,  within any rail corridor
in BNSF's  existing  rail corridor  network (or within the  Auburn-Yakima-Pasco,
Washington  rail  corridor,  or the  Ortonville,  Minnesota-Terry,  Montana rail
corridor)(collectively,   "Rail  Corridors"  and  any  one  individually,  "Rail
Corridor"),  to the  extent of BNSF's  ownership  rights,  so that  Pathnet  can
construct,  install,  operate,  maintain,  replace,  reconstruct,  remove and/or
relocate    (collectively,    "Construct    and    Operate")   a   fiber   optic
telecommunications  transmission  system and certain  appurtenant  equipment and
structures (collectively, "Fiber Optic Facilities");

            WHEREAS, Pathnet intends to construct and operate a network of Fiber
Optic Facilities over many BNSF Rail Corridors, and to construct or acquire, and
then operate, a network of Fiber Optic Facilities over many corridors throughout
the eastern United States;

            WHEREAS,   Pathnet  and  BNSF  have  entered  into  a   Contribution
Agreement,  dated  November 2,  1999,  by  which  BNSF has agreed to  contribute
certain  property  interests  into  Pathnet  and to  execute  and  deliver  this
Agreement and,  subject to the terms,  conditions and  obligations  set forth in
this Agreement, perform the duties set forth herein; and

            WHEREAS,  BNSF is willing,  on the terms and conditions set forth in
this Agreement,  to enter into various specific leases with Pathnet, in the form
of the Lease attached hereto as Exhibit A, with respect to approximately [ * * *
] route miles of Rail  Corridors of BNSF's  existing Rail Corridor  network,  as
specified  by Pathnet  and as shown on  Exhibits B and C attached  hereto,  each
Lease to grant to  Pathnet  the  right to  Construct  and  Operate  Fiber  Optic
Facilities on a specific BNSF Rail Corridor,  to the extent of BNSF's  ownership
rights therein;




                                       -1-
<PAGE>

            NOW, THEREFORE, Pathnet and BNSF agree as follows:

            1.    Condition Precedent to Commencement of Pathnet's Rights.

                  Pathnet and BNSF have  closed the  transaction  described  and
governed  by  the  Contribution  Agreement,  on  the  terms  set  forth  in  the
Contribution Agreement.

            2.    Right to Lease.

                  For a period of 15 years following the date of this Agreement,
on each rail corridor within BNSF's existing Rail Corridor  network,  subject to
the limitations of BNSF's ownership interest in each Rail Corridor, as set forth
in  Section  11 hereof,  and to the  restrictions  set forth in Section 3 hereof
concerning  BNSF's  overriding  rail  operations,  safety  concerns and property
marketing rights, Pathnet shall have the right to enter into a fiber optic lease
with  BNSF on the  terms set  forth in the form of Fiber  Optic  Lease  attached
hereto as Exhibit A and made a part hereof (hereinafter,  "Lease"). (Where, with
respect to a particular  Rail  Corridor  BNSF is subject to a limitation  on its
ability  to grant a  Lease,  but has a right  to  grant a fiber  optic  easement
instead,  BNSF  shall  grant to Pathnet  such a fiber  optic  easement  on terms
otherwise  identical to the Lease,  and any such easement also shall be included
in references  hereinafter  to the term  "Lease.")  Pathnet  acknowledges  that,
subject only to certain  restrictions  set forth in Section 4 hereof,  BNSF will
continue to convey to other parties, or may abandon,  various Rail Corridors, or
portions thereof,  throughout the term of this Agreement,  and that such actions
will  affect  the Rail  Corridor  network  subject  to leasing to Pathnet at any
particular  time. Each Lease shall permit Pathnet to Construct and Operate Fiber
Optic  Facilities  on the specific  Rail  Corridor  premises to which each Lease
applies,  subject to the procedures and terms of each Lease. Each Lease shall be
for a term of 35 years unless the Lease is terminated earlier in accordance with
the terms of each Lease.

            3.    Procedure to Obtain a Lease.

                  Pathnet  may  request a Lease in the form of Exhibit A, to the
extent of BNSF's ownership  interest in the Rail Corridor,  by providing to BNSF
prior  written  notice of its desire to enter into a Lease,  which  notice shall
specify  the end  points of the  particular  BNSF Rail  Corridor  where  Pathnet
desires a Lease.  BNSF shall  grant such  request,  and BNSF and  Pathnet  shall
execute a Lease in the form of  Exhibit A, as soon as  practicable  but no later
than thirty  (30) days after the date BNSF  receives  such notice from  Pathnet,
unless BNSF cannot allow a Lease in the Rail Corridor  because  either:  (i) the
Construction  and Operation of Fiber Optic  Facilities under the Lease in BNSF's
judgment would materially interfere with, or create a safety hazard to BNSF with
respect  to,  BNSF's  existing  or  then  reasonably   foreseeable  future  rail
operations on a segment of the Rail Corridor,  as determined by a BNSF operating
or  engineering  Vice  President  or  Assistant  Vice  President;  or  (ii)  the
Construction  and Operation of Fiber Optic  Facilities under the Lease in BNSF's
judgment  would  materially  interfere with BNSF's  existing or then  reasonably
foreseeable  future plans to market or develop a  particular  parcel of land for
the benefit of a rail  customer or as a real  estate  development  (but not as a
fiber optic venture) on a



                                       -2-
<PAGE>

segment  of the Rail  Corridor,  as  reasonably  determined  by a BNSF  property
management Vice President or Assistant Vice President. Where BNSF cannot allow a
Lease in the Rail  Corridor  for one of the reasons  just set forth,  BNSF shall
cooperate with Pathnet in good faith to seek a solution that will enable Pathnet
to install  its Fiber  Optic  Facilities  on the  requested  portion of the Rail
Corridor  and,  if BNSF is unable to do so, to allow  Pathnet to  Construct  and
Operate  its  Fiber  Optic  Facilities  over  as much of the  Rail  Corridor  as
possible,  consistent  with the terms of (i) and (ii) above,  and, if Pathnet so
desires, BNSF shall execute a Lease with Pathnet over those portions of the Rail
Corridor where the Lease would not violate the terms of (i) or (ii) above.

            4.    Restrictions on BNSF's Right to Grant Future Fiber Optic
                  Rights Along Certain Corridors.

                  Pathnet  acknowledges that the rights to Construct and Operate
Fiber Optic  Facilities to be granted to Pathnet in the Lease are  nonexclusive,
except to the extent set forth in this  Section 4, and that other  parties  have
rights under their existing  agreements with,  and/or  conveyances from, BNSF to
Construct  and Operate Fiber Optic  Facilities  on various BNSF rail  corridors.
Subject to the  existing  rights of other  parties  under  existing  fiber optic
agreements, BNSF agrees as follows:

                  (a) Immediate  Exclusivity  Rights:  Commencing on the date of
this  Agreement,  and  continuing  until  December 31, 2004, for all of the Rail
Corridors  set  forth on  Exhibit  B  attached  hereto  and made a part  hereof,
constituting an aggregate of no more than approximately  4,052 miles ("Exclusive
Corridors"), BNSF shall not grant any rights to any other party to Construct and
Operate any Fiber Optic Facilities on any Exclusive Corridor,  except where: (i)
such Fiber Optic  Facilities  only cross the  Exclusive  Corridor,  and (ii) the
construction  and operation of such Fiber Optic  Facilities  does not materially
disrupt  Pathnet's  ability to utilize the Fiber Optic  Facilities  covered by a
Lease.  This  exclusivity  period  shall  terminate  earlier on all routes where
Commencement  of Construction  (as defined herein) has not occurred,  on either:
(x) the dates  specified in Section 7 hereof if on such date Pathnet has not met
the applicable fiber optic network development  milestone specified in Section 7
with respect to such date; or (y) on one of the dates specified below if:

                      (I) As of  April  30,  2001,  Pathnet  has  not  completed
                  construction,   which  in  this   Section   4(a)   shall  mean
                  installation  of a  conduit  and at least [* * *] fiber  optic
                  fibers in the  conduit,  of at least 800 miles of Fiber  Optic
                  Facilities along the Exclusive Corridors;

                      (II)  As of [* * *], a Liquidity Event (as hereinafter
                  defined) has not occurred;

                      (III) As of April  30,  2002,  Pathnet  has not  completed
                  construction of at least 1,600 miles of Fiber Optic Facilities
                  along the Exclusive Corridors;



                                       -3-
<PAGE>
                      (IV) As of  April  30,  2003,  Pathnet  has not  completed
                  construction of at least 2,400 miles of Fiber Optic Facilities
                  along the Exclusive Corridors;

                      (V) As of  April  30,  2004,  Pathnet  has  not  completed
                  construction of at least 3,200 miles of Fiber Optic Facilities
                  along the Exclusive Corridors; or

                      (VI) As of  April  30,  2005,  Pathnet  has not  completed
                  construction of at least 4,000 miles of Fiber Optic Facilities
                  along the Exclusive Corridors.

                  Termination  of  Pathnet's  exclusivity  rights on all  routes
where  Commencement  of  Construction  has not  then  occurred  will be the sole
consequence  of  Pathnet's  failure  to reach  any  milestone  set forth in this
Section 4(a). In this Agreement, a "Liquidity Event" shall mean the earliest of:
(aa) a Qualified  IPO, as defined in the  Stockholders'  Agreement,  dated on or
about the date hereof, among Pathnet, the current holders of Pathnet's Preferred
Stock, BNSF, CSX Railway Company and Colonial Pipeline Company; or (bb) the date
on which the common stock or any successor  security of Pathnet either is listed
for trading on a national  securities exchange registered under the Exchange Act
of 1934,  as amended  ("Exchange  Act"),  or is traded in an  over-the-  counter
market and quoted in an automated  quotation system of the National  Association
of Securities  Dealers,  Inc.; or (cc) there has been a transaction in which all
stockholders of Pathnet have received  ownership  interests which are listed for
trading on a national  securities exchange registered under the Exchange Act, or
is traded in an  over-the-counter  market and quoted in an  automated  quotation
system of the National Association of Securities Dealers, Inc.

                  (b) Exclusive Right to Negotiate after Commencement of
Construction:

                      (1) Definitions. In this Agreement, the term "Commencement
                    of Construction" shall mean the date of award of the primary
                    construction contract for any segment of a Rail Corridor. In
                    this Agreement,  the term "Restricted  Corridors" shall mean
                    those Rail Corridors set forth on Exhibit C, which is made a
                    part  hereof,  the  initial  version  of which  is  attached
                    hereto, which Exhibit C may be modified by Pathnet from time
                    to time by Pathnet delivering notice of such modification to
                    BNSF;  provided  that  the  aggregate  route  miles  of  the
                    Exclusive Corridors plus the Restricted Corridors during the
                    term of this Agreement shall not exceed  approximately [ * *
                    *] route miles.  In the event that Pathnet revises Exhibit C
                    to include all or any  portion of the  Auburn-Yakiman-Pasko,
                    Washington Rail Corridor or the Ortonville, Minnesota-Terry,
                    Montana Rail  Corridor,  BNSF,  within 30 days following its
                    receipt of notice of such  revision,  shall acquire from its
                    affiliate now owning  certain  property  rights in each Rail
                    Corridor that  affiliate's  rights in the Rail Corridor land
                    (possibly  exclusive of a rail service  easement in the case
                    of the Auburn-Yakima-Pasko rail corridor).



                                       -4-
<PAGE>
                      (2) Exclusive  Right to Negotiate.  Until  Commencement of
                    Construction  occurs on a Rail Corridor,  Pathnet shall have
                    no exclusive  right to  negotiate  and execute a fiber optic
                    agreement  on such  Rail  Corridor  with  any  third  party.
                    Beginning on the date of Commencement of  Construction,  and
                    continuing  for  up  to  five  years   thereafter  for  each
                    Exclusive  Corridor  to the  extent  Pathnet  no longer  has
                    exclusive  rights under 4(a) on such Rail Corridor,  and for
                    up to three years  thereafter for each Restricted  Corridor,
                    but in no event beyond the  termination of the Lease related
                    to such Exclusive Corridor or Restricted  Corridor,  Pathnet
                    shall have an exclusive  right to negotiate  and execute any
                    fiber optic agreement on such Rail Corridor,  except for any
                    agreement related to Fiber Optic Facilities which only cross
                    the  Restricted  Corridor or Exclusive  Corridor,  where the
                    construction  and  operation of such Fiber Optic  Facilities
                    does not materially disrupt Pathnet's ability to utilize the
                    Fiber Optic  Facilities  covered by a Lease;  provided  that
                    this  exclusive  right to  negotiate  and  execute any fiber
                    optic  agreement with respect to any particular  party shall
                    continue  for a period of [* * *] (and BNSF  thereafter  may
                    negotiate a fiber optic  agreement with such party if by the
                    end of such [* * *] Pathnet does not have an executed  fiber
                    optic agreement with such party).  The periods for exclusive
                    rights to  negotiate as specified in this Section 4(b) shall
                    terminate  earlier,  as  to  all  Rail  Corridors  and  Rail
                    Corridor  segments on which  Pathnet has not yet reached the
                    stage  Commencement of  Construction if Pathnet either:  (i)
                    does not meet the applicable development milestone specified
                    in Section 7 hereof,  (ii) as of [* * *], a Liquidity  Event
                    has not  occurred,  or (iii)  has not met the  schedule  for
                    constructing   Fiber  Optic   Facilities   along   Exclusive
                    Corridors,  as  set  forth  in  Section  4(a)  hereof  .  In
                    addition, Pathnet's exclusive right to negotiate and execute
                    any  fiber  optic  agreement  shall  terminate  on any  Rail
                    Corridor  on the date  that  Pathnet's  Lease  on such  Rail
                    Corridor is terminated  pursuant to the terms of such Lease.
                    In  addition,  at any time prior to the end of the period in
                    which  Pathnet  has an  exclusive  right  to  negotiate  and
                    execute  any  fiber  optic   agreement  on  any   Restricted
                    Corridor,  BNSF may not enter into any fiber optic agreement
                    with another party with respect to such Restricted  Corridor
                    except  where such  agreement  requires  such other party to
                    reach   Commencement  of  Construction  on  such  Restricted
                    Corridor  within one year  following the  effective  date of
                    such agreement.

            5.    Limitation on Pathnet's Right to Lease.

                  If  Pathnet  enters  into a Lease  with  BNSF,  and such Lease
subsequently is terminated for any reason  specified in such Lease, for a period
of three (3) years  following  the date of any such  termination,  Pathnet shall
have no right to enter  into a Lease on any  portion  of the BNSF Rail  Corridor
that was subject to such Lease.



                                       -5-
<PAGE>

            6.    Contribution to Pathnet.

                  This  Agreement  is  being  contributed  by  BNSF  to  Pathnet
pursuant to the terms of the Contribution Agreement.

            7.    Fiber Optic Network Development Schedule.

                  Pathnet  shall  develop  a  Fiber  Optic  Facilities   network
throughout the United States,  utilizing  BNSF's rail corridors and longitudinal
corridors of one or more other parties in the United States,  in accordance with
the following schedule of fiber optic network development milestones:

                        (a) By  June  30,  2001,  Pathnet  must  have  completed
                        construction   of,  or  have   acquired,   Fiber   Optic
                        Facilities  over at  least  3,000  Route  Miles,  in the
                        aggregate.  As used in this  Section,  each "Route Mile"
                        shall consist of either one mile of at least [* * *], or
                        one mile of [* * *] plus [* * *]

                        (b) By  June  30,  2002,  Pathnet  must  have  completed
                        construction   of,  or  have   acquired,   Fiber   Optic
                        Facilities  over at  least  6,000  Route  Miles,  in the
                        aggregate.

                        (c) By  June  30,  2003,  Pathnet  must  have  completed
                        construction   of,  or  have   acquired,   Fiber   Optic
                        Facilities  over at  least  9,500  Route  Miles,  in the
                        aggregate.

                        (d) By  June  30,  2004,  Pathnet  must  have  completed
                        construction   of,  or  have   acquired,   Fiber   Optic
                        Facilities  over at least  12,000  Route  Miles,  in the
                        aggregate.

                        (e) By  June  30,  2005,  Pathnet  must  have  completed
                        construction   of,  or  have   acquired,   Fiber   Optic
                        Facilities  over at least  12,500  Route  Miles,  in the
                        aggregate.

Termination of Pathnet's  exclusivity rights on all routes where Commencement of
Construction  has not then  occurred will be the sole  consequence  of Pathnet's
failure to reach any milestone set forth in this Section 7.




                                       -6-
<PAGE>



            8.    Reporting Relative to Fiber Optic Network Development
                  Schedule.

                  Forty days before each deadline specified in Section 7 hereof,
Pathnet shall deliver to BNSF a report  reasonably  satisfactory to BNSF showing
Pathnet's  progress,  as  of  the  date  of  the  report,  toward  meeting  each
appropriate  level of development  specified in Section 7, and its plans to meet
or exceed each such level by the appropriate deadline. Seven (7) days after each
deadline  specified  in Section 7,  Pathnet  shall  deliver to BNSF a  certified
report showing  whether  Pathnet has met or exceeded each  appropriate  level of
development  specified  in that  Section.  BNSF  shall  have the  right to audit
Pathnet's  records in order to verify the  contents of each  report  required by
this Section 8.

            9.    Time is of the Essence; Post-Termination Liability.

                  Time  is of the  essence  in  performing  this  Agreement.  No
termination  of this  Agreement  shall  release  Pathnet  from any  liability or
obligation of Pathnet under the terms of this  Agreement,  resulting from events
happening prior to the date of termination.

            10.   Compliance with Laws.

                  In exercising  any and all of its right under this  Agreement,
Pathnet shall comply with all applicable laws, regulations,  ordinances,  rules,
decisions and orders of any court or governmental  body with  jurisdiction,  and
shall  have  the  sole   responsibility  for  all  costs  associated  with  such
compliance.  Pathnet,  at its sole cost, shall secure and maintain in effect all
federal,  state and local permits licenses and/or zoning  approvals  required to
Construct and Operate the Fiber Optic Facilities,  and shall satisfy any and all
conditions that must be met in order to obtain any required  permit,  license or
zoning approval.

            11.   Limitations on BNSF's Ownership Rights.

                  Pathnet   acknowledges   that  one  or  more  other   parties,
including, but not limited to, various native American nations, may have, or may
claim to have,  ownership  rights in certain  segments of certain of BNSF's rail
corridors,  and may claim that Pathnet also must obtain rights from it (or them)
in order to occupy, or access, the Premises, as defined in each Lease, and that,
in some  cases,  such  claims may be valid.  Pathnet  acknowledges  that  BNSF's
ownership  interest  in many of its Rail  Corridors  is a  determinable  fee,  a
railroad  right of way or a rail service  easement,  which shall  terminate when
BNSF either:  (i) ceases to use those Rail Corridors for railroad  purposes;  or
(ii) uses such Rail Corridors for purposes found to be inconsistent  with use of
the corridors for railroad purposes,  and that in such circumstances,  Pathnet's
right to Lease any such Rail Corridor, or its rights under any Lease of any such
Rail Corridor,  may be subject to  termination as of the date the  circumstances
set forth in either (i) or (ii), above, first arise (unless Pathnet improves the
quality of title to the Lease  property  by  obtaining a patent or deed from the
federal government,  if appropriate,  or acquiring additional property interests
from third parties).  Pathnet also acknowledges that BNSF's ownership rights may
terminate for other reasons, such



                                       -7-
<PAGE>
as termination  of franchise  rights,  and that certain  segments of BNSF's Rail
Corridors  consist only of a trackage  rights  license to BNSF to enable BNSF to
provide rail service,  or shared ownership with other  railroads,  and that BNSF
may not have rights to include those  segments in any Lease to Pathnet.  Pathnet
further  acknowledges  that  Pathnet's  rights to enter into a Lease on any BNSF
Rail  Corridor,  and its rights under any Lease of any BNSF Rail  Corridor,  are
subject and subordinate to all outstanding and/or future rights and encumbrances
on BNSF's Rail Corridors  (including liens,  security  interests and mortgages),
and any and all easements,  other leases, licenses,  permits or agreements which
now or in the future relate to BNSF's Rail Corridors,  except BNSF in the future
shall not place any  encumbrance  upon any BNSF Rail  Corridor then subject to a
Lease to  Pathnet,  or enter  into  any  easement,  lease,  license,  permit  or
agreement,  which would  materially  disrupt  Pathnet's  ability to exercise its
rights under this Agreement or to utilize the Fiber Optic Facilities  covered by
a Lease (and Pathnet  acknowledges that its ability to exercise its rights under
this Agreement or to utilize such Fiber Optic Facilities would not be materially
disrupted if either:  (x) Pathnet is relocated  to another  location  within the
applicable  BNSF Rail Corridor in accordance with the terms of Section 14 of the
applicable  Lease,  or could be located  elsewhere in the Rail Corridor;  or (y)
BNSF preserves fiber optic rights and makes those rights available to Pathnet at
no charge  payable  by Pathnet  to the  holder of the land  interest  where such
rights are located and changes following any conveyance by BNSF of its ownership
interest in such a parcel have not caused a significant  physical  limitation on
constructing Fiber Optic Facilities through such parcel (and Pathnet agrees that
any cost of enforcing such rights shall be the responsibility of Pathnet).  BNSF
therefore  conveys to  Pathnet  no more  right,  title or  interest  in any Rail
Corridor  than BNSF holds in such Rail Corridor at the time of  conveyance,  and
Pathnet hereby releases BNSF from any and all liability,  cost, loss,  damage or
expense in connection with any claims that BNSF lacked sufficient legal title to
convey the rights  described  herein.  Pathnet shall have the right, at its sole
cost and  expense,  to acquire or attempt  to acquire  from other  parties  such
rights in BNSF Rail Corridors that Pathnet deems necessary or appropriate.

            12.   Confidentiality.

                  The parties hereto shall keep  confidential  all terms of this
Agreement,  except to the extent that  disclosure  thereof is required by law or
agreed by the parties in writing.  In the event  either party hereto is required
to disclose any terms of this  agreement  pursuant to  applicable  law, at least
three days prior to  disclosing  the same (or such shorter  period  permitted by
law),  such party  shall  notify the other  party  hereto in writing and provide
copies of the terms that the party  intends to  disclose.  The  language  of the
press  release  announcing  this deal shall be mutually  agreed upon between the
parties hereto.

            13.   No Assignment.

                  Neither  this  Agreement,  nor any of the rights to lease that
are  granted to Pathnet by the terms of this  Agreement,  shall be  assigned  by
Pathnet without BNSF's prior written  consent,  which may be granted or withheld
in BNSF's sole discretion.  BNSF acknowledges  that Pathnet,  without consent of
BNSF may sublease to one or more parties the right to use other


                                       -8-
<PAGE>


Fiber Optic  Facilities  under a Lease,  may sell to one or more other parties a
partial  ownership in such Fiber Optic  Facilities,  may sublease or assign this
Agreement or any Lease to a subsidiary,  affiliate or parent company  controlled
by, under common control with, or  controlling,  either  indirectly or directly,
Pathnet,  but only where,  and to the  extent,  that such  transaction  does not
violate the terms of the  Contribution  Agreement,  or, for  financing  purposes
only,  Pathnet may assign this  Agreement to Lucent  Technologies,  Inc.  and/or
Nortel Networks, Inc., or an affiliate of either company, or to some other third
party following the written  concurrence of BNSF which shall not be unreasonably
withheld or delayed, or may assign any Lease to a third party,  provided that in
any such case Pathnet shall remain fully responsible to BNSF for compliance with
all terms of this Agreement and the Lease. (In the foregoing  sentence the terms
"control",  "controlled", and "controlling" shall mean ownership of more than 50
percent of the equity  interest in a company.)  Nothing  herein  shall  prohibit
Pathnet:  (i)  from  involving  contractors,   or  strategic  or  co-development
partners,  in Construction and Operation of the Fiber Optic Facilities,  on such
terms as Pathnet may  determine in its sole  discretion,  provided that all such
activities  are conducted in accordance  with the terms of this Lease,  and that
Pathnet  remains  fully  liable  for all  obligations  hereunder;  and (ii) from
granting  liens or other  security  interests in the Fiber Optic  Facilities  or
Pathnet's  rights under this Lease in connection  with  financing or investments
made available to Pathnet, which agreements may permit Pathnet's lenders to take
possession,  sell,  assign or  otherwise  transfer  the Fiber Optic  Facilities,
including the right to operate,  or permit a third-party  to operate,  the Fiber
Optic  Facilities,  provided that any party taking possession of the Fiber Optic
Facilities  shall be  subject  to all  terms of the  Lease,  and that  continued
operation  of the Fiber  Optic  Facilities  shall be subject to all terms of the
Lease.

            14.   Limitation on Damages for Breach of this Agreement.

                  Damages  that may be  recovered  for breach of this  Agreement
shall not include any indirect,  consequential,  special or punitive damages, or
lost  profits,  or the cost of Pathnet  building  Fiber Optic  Facilities on any
alternative route.

            15.   Taxes and Other Charges.

                  (a)      Pathnet shall pay, and shall indemnify BNSF against
                           the liability for, any and all taxes, levies,
                           excises, charges and assessments (including any
                           penalties and interest related thereto)
                           (collectively, "Taxes") attributable to the
                           execution, delivery, recording or filing of this
                           Agreement, including without limitation any ad
                           valorem taxes assessed against the properties of BNSF
                           to the extent such ad valorem taxes are attributable
                           to Pathnet's rights hereunder, but only to the extent
                           that the ad valorem taxes attributable to the value
                           of Pathnet's rights have increased due to assessments
                           levied after the date hereof.
                  (b)      In the case of amounts described in Section 15(a) to
                           be paid by Pathnet, BNSF shall determine the amount
                           of such Taxes to be paid by Pathnet by reference to
                           information provided by the relevant taxing authority
                           that demonstrates or establishes the increase in such
                           Taxes after the date hereof. If the information
                           provided by the relevant taxing authority
                           demonstrates or establishes that Taxes are
                           attributable to fiber optic development value, but
                           the information does not demonstrate or establish the
                           amount of the Taxes that are so




                                       -9-
<PAGE>




               (c)
                  attributable,  such amount shall be determined by reference to
                  a formula that is consistently  applied and that allocates any
                  such  Taxes  among all of  BNSF's  Rail  Corridors  (including
                  similar  agreements)  subject to such  Taxes in a manner  that
                  reasonably  reflects  both the basis  upon which the Taxes are
                  imposed and the relative  proportion of such Rail Corridors in
                  respect of which  Pathnet has been granted  rights  hereunder.
                  The amount of Taxes  attributable  to fiber optic  development
                  value shall be fairly allocated between Pathnet and BNSF based
                  upon the relative value of Pathnet's  rights and the rights of
                  others to whom BNSF has  granted,  or in the future may grant,
                  fiber optic rights with respect to the same  property.  In all
                  cases, BNSF promptly shall provide to Pathnet information that
                  establishes  the manner in which any such Taxes were allocated
                  and  the  basis  for   establishing   that  such  amounts  are
                  attributable to the execution of this  Agreement.  The parties
                  shall resolve any dispute  regarding the liability for payment
                  of Taxes  hereunder  pursuant  to the dispute  resolution  and
                  arbitration procedures set forth in Section 21 of the Lease.

                  (d)    Notwithstanding  the  foregoing,  Pathnet  shall not be
                         responsible  for any  Taxes  for  which it would not be
                         responsible pursuant to the provisions of Section 24(d)
                         or (e) of the form of Lease attached  hereto or for any
                         Taxes on Rail Corridors for periods in respect of which
                         Pathnet no longer has rights hereunder.

                  (e)    BNSF agrees to reasonably cooperate with Pathnet in the
                         refund, rebate,  reduction,  abatement,  mitigation and
                         contest of any Taxes for which  Pathnet is obligated to
                         pay hereunder.

            16.   Notices.

                  Unless  otherwise  provided  herein,  all  notices  and  other
communications  required by or concerning this Agreement shall be in writing and
shall be deemed to have been duly given when delivered in person, or on the next
business day when sent by a nationally  recognized  overnight courier, or on the
second  succeeding  business day when sent by  registered  or  certified  United
States Mail (postage  prepaid,  return receipt  requested),  or, if postal claim
notice  is  given , on the  date of its  return  marked  "unclaimed"  (provided,
however, that upon receipt of a returned notice marked "unclaimed",  the sending
party hereto shall make reasonable  effort to contact and notify the other party
hereto by telephone) and each respective party hereto at the following addresses
(or at such  other  address  for a party  hereto as shall be  specified  by like
notice):

                  (1)      if to Pathnet:

                           Pathnet, Inc.
                             11720 Sunrise Valley Drive
                           Reston, Virginia 20191
                              Attn: General Counsel

                                      -10-
<PAGE>

                  (2)      if to BNSF:

                           Assistant Vice President, Telecommunications
                           The Burlington Northern and Santa Fe Railway Company
                           2600 Lou Menk Drive
                          Forth Worth, Texas 76131-2830

                           and to:

                           Vice President - Law
                           The Burlington Northern and Santa Fe Railway Company
                           2500 Lou Menk Drive, AOB-3
                          Fort Worth, Texas 76131-2830

            18.   Brokers and Agents.

                  BNSF and  Pathnet  represent  and  warrant  to each other that
neither  has  employed  any  broker,  agent or  finder in  connection  with this
Agreement or the Purchase  Agreement,  and each  indemnifies  and agrees to hold
harmless the other from and against any commission or fee claimed by any broker,
agent or finder in connection with this transaction.


            19.   Force Majeure.

                  Except  as may be  elsewhere  specifically  provided  in  this
Agreement,  any  failure or delay in the  performance  by a party  hereto of its
obligations  hereunder  shall not  constitute a breach of this Agreement if such
failure or delay results from causes beyond that party's control,  including but
not limited to acts of God,  governmental  action  (whether in its  sovereign or
contractual  capacity),  fire, flood, or other catastrophe,  national emergency,
insurrection,  riot, and war. The phrase "beyond that party's control" shall not
include  any  failure  to reach  agreement  with a party  with whom  Pathnet  is
negotiating  pursuant to the  exclusive  right to negotiate  provided in Section
4(b).

            20.   Severability.

                  If any provision of this Agreement or the application thereof,
shall be held  invalid,  illegal  or  unenforceable  in  whole  or in part,  the
remainder of this Agreement and the  application  thereof shall not be affected,
and shall be  enforceable  to the full extent  permitted by law, and the portion
hereof found to be invalid shall be enforced to the fullest extent  permitted by
law,  and, if  possible,  shall be reformed to carry out as much as possible the
intent of the parties as expressed herein.



                                      -11-
<PAGE>


            21.   Amendment.

                  This  Agreement  may be amended  only by a written  instrument
executed  by both  parties  hereto.  No  failure  to  exercise  and no  delay in
exercising,  on the  part of a party  hereto,  any  right,  power  or  privilege
hereunder shall operate as a waiver of any other provision of this Agreement, or
as a waiver of that right,  power or  privilege  either  before,  or after,  the
period of waiver.

            22.   Entire Agreement.

                  This Agreement and all Exhibits  attached hereto,  constitutes
the entire  agreement of the parties hereto with respect to the subject  matters
hereof,  and  supersede  any  and all  prior  negotiations,  understandings  and
agreements, whether oral or written, with respect hereto.

            23.   Applicable Law.

                  This Agreement shall be interpreted and enforced in accordance
with the laws of the State of Texas.  Venue for any legal action to interpret or
enforce this Agreement shall lie exclusively in the United States District Court
for the Northern  District of Texas,  or if  jurisdiction  cannot be obtained in
federal  court,  then venue shall be in a Texas  state court in Tarrant  County,
Texas.

            24.   Counterparts.

                  This  Agreement  may be executed in one or more  counterparts,
each of which  shall be  deemed an  original,  but all of which  together  shall
constitute but one and the same instrument.


            IN WITNESS WHEREOF,  authorized  representatives of BNSF and Pathnet
have executed this Agreement as of the date first set forth herein.


THE BURLINGTON NORTHERN AND                     PATHNET TELECOMMUNICATIONS,
SANTA FE RAILWAY COMPANY                        INC.

By:   /s/ illegible                              By: /s/ W.R. Smedberg V
     ------------------------------                   --------------------------
     Name:                                            Name:
           ------------------------                         --------------------
Title:                                          Title:
        ---------------------------                   --------------------------



                                      -12-
<PAGE>


                                    EXHIBIT A

                                  FORM OF LEASE

      Portions of this exhibit have been omitted and filed separately with
           the Securities and Exchange Commission. Those portions are
                             designated "[ * * * ]."

                                                                       EXHIBIT B


                            FORM OF FIBER OPTIC LEASE


            THIS  FIBER  OPTIC  LEASE  ("Lease")  is made as of this ____ day of
______________,  200__  between  Pathnet  Telecommunications,  Inc.,  a Delaware
corporation  ("Pathnet")  and The  Burlington  Northern  and  Santa  Fe  Railway
Company,  a Delaware  corporation  ("BNSF").  This Lease is being  entered  into
pursuant to the terms of that certain fiber optic access agreement  between BNSF
and Pathnet dated November __, 1999 ("Fiber Optic Access Agreement"), which sets
forth the terms upon which BNSF granted to Pathnet the right to enter into fiber
optic leases,  on the terms of this Lease,  on specified  rail  corridors in the
BNSF rail transportation network and subject to all limitations on the ownership
interest of BNSF, to Construct and Operate  Fiber Optic  Facilities  (as defined
below).

            WHEREAS,  BNSF has certain  ownership  interests in a rail  corridor
consisting    of   ___   route    miles    between    ___________________    and
______________________ ("Rail Corridor");

            WHEREAS,  Pathnet  desires  to lease  from  BNSF,  on the  terms and
conditions  set forth  herein,  a  portion  of the Rail  Corridor,  in order for
Pathnet to construct, install, operate, maintain, replace,  reconstruct,  remove
and/or   relocate   (collectively,   "Construct  and  Operate")  a  fiber  optic
telecommunications  transmission  system and certain  appurtenant  equipment and
structures (collectively, "Fiber Optic Facilities"); and

            WHEREAS,  BNSF is willing,  on the terms and conditions set forth in
this Lease,  to lease a portion of the Rail  Corridor  to Pathnet,  for the sole
purpose  of  allowing  Pathnet,  subject  to all  limitations  on the  ownership
interest of BNSF, to Construct  and Operate  Fiber Optic  Facilities on the Rail
Corridor.

            NOW THEREFORE, Pathnet and BNSF agree as follows:

            1. Lease  Rights.  Pursuant to the terms of this Lease and the Fiber
Optic Access Agreement,  Pathnet shall have the right to enter upon a portion of
the Rail Corridor,  which portion  generally shall be a three foot wide strip of
land, or such larger  portion  required to Construct and Operate the Fiber Optic
Facilities,  as  specified  in the Final  Construction  Plans (as defined  later
herein) but at each repeater  station or other required  Fiber Optic  Facilities
structure  occupying  more land,  the portion  shall  extend one foot beyond the
perimeter of the  structure or equipment,  or, where a perimeter  fence is built
around the structure or  equipment,  one foot beyond the  perimeter  fence,  the
specific  portion of the Rail Corridor leased  ("Premises")  being identified in
Exhibit A attached  hereto and made a part hereof.  All structures may be fenced
by Pathnet,  at its sole cost and  expense,  and may be multiple  stories to the
extent  approved by BNSF,  provided that the height and other  dimensions of any
such structure do not interfere with railroad operations or clearance, or create
a safety hazard. Any such structures may exceed 3,500



                                        1
<PAGE>

square  feet only:  (i)  subject to space  availability;  (ii)  following  prior
written approval of BNSF, not to be unreasonably  withheld; and (iii) where such
structures are not buildings where people  regularly  report to work.  Pathnet's
right to enter the Premises shall  commence on the ___ day of  ________________,
200__,  and shall be for the sole  purpose of  allowing  Pathnet,  or any of its
permitted assignees,  sublessees of capacity, agents, contractors,  strategic or
co-development  partners,  customers  or  invitees,  or any of  their  employees
(collectively,   "Pathnet   Parties")  to  Construct  and  Operate  Fiber  Optic
Facilities on the Premises, subject to BNSF's rights as set forth herein and all
contract and/or property rights of others in the Premises.  Pathnet,  and any of
the Pathnet Parties,  also shall have the right to cross other property in which
BNSF has a  sufficient  ownership  interest as required to access the  Premises,
subject to BNSF's  rights as set forth herein and all contract  and/or  property
rights of others in the  Premises,  so long as such  access  shall not cross any
active  railroad  track,  or come within 25 feet of such track,  without  BNSF's
prior written consent,  which will not be unreasonably  withheld or delayed. Any
of the Pathnet  Parties  entering  onto the Rail  Corridor must first execute an
agreement with BNSF in the form of Exhibit "C-1" attached hereto and made a part
hereof, by which such party agrees to comply with BNSF's Contractor Requirements
set forth as Exhibit "C"  attached  hereto and made a part  hereof (and  Pathnet
acknowledges  that any such  Pathnet  Party's  execution  of the  Exhibit  "C-1"
agreement shall not relieve Pathnet of its full responsibility hereunder for any
actions,  omissions or the  presence of such  Pathnet  Party on or near the Rail
Corridor).  Pathnet may install as much fiber optic  capacity  (which term shall
include  conduits,  whether installed empty or with fiber) on the Premises as it
determines to be  appropriate,  and may add further fiber optic capacity  during
the term of this Lease.  Pathnet's  rights under this Lease are granted  without
covenant of title or quiet enjoyment and Pathnet  acknowledges  that one or more
other  parties  may  have,  or may claim to have,  ownership  rights in the Rail
Corridor,  and may claim that Pathnet also must obtain  rights from it (or them)
in order to occupy or access the Premises,  and that, in some cases, such claims
may be valid.  Pathnet  acknowledges  that  segments  of the Rail  Corridor  may
consist  only of a trackage  rights  licensed  to BNSF to enable BNSF to provide
rail service,  or shared ownership with other  railroads,  and that BNSF may not
have rights to include  these  segments  in any Lease to Pathnet.  BNSF will use
reasonable  efforts  to make  available  to  Pathnet  all  documents  reasonably
requested  by Pathnet  that could be located in a  reasonable  search  (and,  at
BNSF's  option,  BNSF can require that Pathnet or  Pathnet's  agent  conduct the
search,  at Pathnet's  cost),  which  documents  concern BNSF's rights,  and the
rights of others,  which in BNSF's  judgment  affects the Premises and Pathnet's
rights under this Lease or which Pathnet may identify which  reasonably  relates
to its rights  under this  Lease.  Pathnet  acknowledges  that BNSF shall not be
liable for any nondisclosure of any document other than nondisclosure  resulting
from  gross  negligence  or  wilfull  misconduct  of BNSF.  Pathnet  shall  keep
confidential  all confidential and proprietary data contained in these documents
and shall not use it for any purposes other than as set forth herein. BNSF shall
have the right,  without  causing  undue  delay,  to review  documents  prior to
permitting  Pathnet  or its  agent to  review  those  documents,  and to  redact
confidential   and   proprietary    information    contained   therein.    Where
confidentiality  provisions  apply to contracts  requested by Pathnet under this
Section 1, BNSF shall  describe for Pathnet the  restrictions  and  interference
with  Pathnet's  rights  that such  contracts  permit,  and or the  fiber  optic
capacity that such  contracts  permit to be built in the Rail  Corridor,  to the
extent that BNSF  determines that it can do so consistent with the terms of each
applicable   confidentiality   provision.  If  Pathnet  determines  that  BNSF's
description in such


                                        2
<PAGE>

circumstances is  insufficient,  Pathnet shall so inform BNSF and BNSF shall use
good faith  efforts to obtain  promptly  from the other party to the contract at
issue a waiver of the  confidentiality  provision.  Pathnet's rights are subject
and subordinate to all outstanding  rights and encumbrances on the Rail Corridor
(including,  but not limited to, BNSF's  mortgages) which BNSF has placed, or in
the future will place,  on the Rail Corridor,  and any and all easements,  other
leases, licenses, permits or agreements which now or in the future relate to the
Rail  Corridor,  except that BNSF in the future shall not place any  encumbrance
upon the  Premises,  or enter  into any  easement,  lease,  license,  permit  or
agreement  covering any portion of the Premises,  which would materially disrupt
Pathnet's  ability to utilize the Fiber Optic  Facilities  under this Lease (and
Pathnet  acknowledges  that its ability to utilize  such Fiber Optic  Facilities
would not be  materially  disrupted if Pathnet is relocated to another  location
within the Rail Corridor in accordance  with the terms of Section 14 hereof,  or
BNSF makes available to Pathnet the fiber optic rights that BNSF has reserved at
no charge  payable  by Pathnet  to the  holder of the land  interest  where such
rights are located  (and Pathnet  agrees that any cost of enforcing  such rights
shall be the  responsibility  of Pathnet).  Pathnet accepts the condition of the
Premises  "AS IS, WHERE IS" and "WITH ALL FAULTS".  BNSF  DISCLAIMS  ANY AND ALL
WARRANTIES,  EXPRESS OR IMPLIED,  THAT ARE NOT  SPECIFICALLY SET FORTH HEREIN IN
SECTION 22 HEREOF.

            2.  Limitations on Lease Rights.  Pathnet's  rights under this Lease
also shall be subject and subordinate to the prior and continuing rights: (i) of
BNSF  (and/or any other party with rights from BNSF) to use and  maintain all or
any portion of its Rail Corridor in operating,  maintaining,  reconstructing  or
relocating railroad tracks, signals, communications, electric lines or any other
improvements,   equipment  or  facilities  related  to  providing  rail  service
(collectively,  "Rail Facilities");  (ii) of BNSF to use, and to allow others to
use, all and any portion of the Rail  Corridor  for any purpose  (subject to the
terms of  Section  4 of the  Fiber  Optic  Access  Agreement),  which  would not
materially disrupt Pathnet's ability to utilize the Fiber Optic Facilities under
this  Lease;  (iii) of BNSF to market  and/or  develop all or any portion of the
Rail  Corridor  or  other  BNSF  property  to  rail  transportation   customers,
utilities,  municipalities  and other  third  parties  except as  restricted  by
Section 4 of the Fiber Optic Access Agreement; and (iv) of BNSF to convey to any
party all or any portion of the Rail Corridor, any improvements owned by BNSF on
its Rail Corridor,  and any air rights above,  or subsurface  rights below,  the
surface of the Rail Corridor,  except that any such conveyance by BNSF after the
date of this Lease shall be subject to this Lease,  to the extent  permitted  by
applicable laws and agreements entered into prior to the date of this Lease. The
provisions  of this  paragraph  shall be subject to the  provisions of the Fiber
Optic Access Agreement.

            3. Railroad  Control.  BNSF (and/or any other party with rights from
BNSF) shall have full  control at all times over the  operation  of its railroad
and all Rail Facilities in the Rail Corridor.  Pathnet's rights under this Lease
do not authorize Pathnet, or any of the Pathnet Parties, to interfere in any way
with any aspect of BNSF's (and/or such other party's) rail  operations,  or with
any Rail Facilities,  on or near the Rail Corridor, or BNSF's (and/or such other
party) ability to maintain,  reconstruct  or relocate any Rail  Facilities on or
near the Rail Corridor.  Pathnet understands that various activities of BNSF, or
parties with rights  through  BNSF,  could have the  potential  of  interrupting
service provided by Pathnet's Fiber Optic Facilities. BNSF



                                        3
<PAGE>

understands that  uninterrupted  service via Pathnet's Fiber Optic Facilities is
of critical  importance  to Pathnet.  Where BNSF knows about  future  activities
which,  in BNSF's  opinion,  would have a reasonable  potential of  interrupting
service via Pathnet's Fiber Optic Facilities or otherwise materially interfering
with the  Construction and Operation of the Fiber Optic  Facilities,  BNSF shall
provide  notice  thereof to Pathnet as far in advance as is practical  under the
circumstances,  and shall  cooperate  with  Pathnet to attempt to avoid any such
service interruption.  Any failure by BNSF to provide such notice or cooperation
shall not subject BNSF to any liability,  costs,  expenses,  damages,  losses or
claims to Pathnet or any of the Pathnet Parties, except where the failure is due
to the gross negligence or willful misconduct of BNSF.

            4. Fiber Optics Rights are Nonexclusive. The fiber optics rights
granted to Pathnet are nonexclusive, except to the extent set forth in Section 4
of the Fiber Optic Access Agreement.

            5. Term of Lease. The term of this Lease shall be for 35 years years
from the date set forth in Section 1,  except  this  Lease  shall be  terminated
earlier,  if any of the  following  circumstances  occur,  on the specific  date
related to those circumstances, as follows:

               (a)      If Pathnet fails to deliver Proposed  Construction Plans
                        (as defined herein) within one hundred twenty (120) days
                        after the date of this Lease,  or such longer  period as
                        may  be  reasonably  necessary  to  cure  such  failure,
                        provided  that  Pathnet  already  has begun to cure such
                        failure,   and   continues   diligently  to  cure  until
                        completion;

               (b)      If Pathnet fails to reach Commencement of Construction
                        (which is defined herein as the date of award of the
                        primary construction contract for the segment of the
                        Rail Corridor covered by the Proposed Construction
                        Plans), within either: (i) sixty (60) days from the date
                        that the Proposed Construction Plans become Final
                        Construction Plans for that segment of the Rail
                        Corridor, or such longer period as may be reasonably
                        necessary to cure such failure, provided that Pathnet
                        already has begun to cure such failure, and continues
                        diligently to cure until completion; or (ii) thirty (30)
                        days from a later date agreed to in writing by BNSF;

               (c)      Upon Pathnet's submission of the Proposed Construction
                        Plans, Pathnet also will submit to BNSF a construction
                        schedule ("Construction Schedule") for BNSF's approval,
                        such approval not to be unreasonably withheld. Pathnet
                        acknowledges that BNSF desires that construction be
                        completed as promptly as possible and will take this
                        into account in preparing the Construction Schedule. The
                        Construction Schedule shall contemplate completion of
                        construction of Fiber Optic Facilities on the segment of
                        the Rail Corridor covered by the Proposed Construction
                        Plans as promptly after BNSF's final approval of the
                        Proposed Construction Plans as is commercially feasible,
                        taking into account issues of weather and season, and
                        time to complete title due diligence or respond as



                                        4
<PAGE>

                        reasonably  required to any title  problems  that likely
                        would materially  affect Pathnet's  ability to Construct
                        and Operate the Fiber Optic  Facilities,  and to acquire
                        any necessary  construction and operating permits.  Upon
                        approval  of  the   Proposed   Construction   Plans  and
                        Construction Schedule,  Pathnet will construct the Fiber
                        Optic  Facilities  in accordance  with the  Construction
                        Schedule  and  otherwise  with  all  promptness  and due
                        diligence, it being understood that modifications in the
                        Construction  Schedule  may be  required  due to  issues
                        arising  during  construction.   If  at  any  time  BNSF
                        believes  that Pathnet has failed to construct the Fiber
                        Optic  Facilities as promptly as commercially  feasibly,
                        subject to Pathnet's  right to suspend  construction  as
                        provided in this  Subsection,  BNSF may provide  Pathnet
                        with  written  notice of this fact.  If Pathnet does not
                        cure  such  failure   within   thirty  (30)  days  after
                        receiving such written notice,  then upon written notice
                        to  Pathnet,  BNSF may  terminate  the Lease,  effective
                        immediately.  Notwithstanding the foregoing, Pathnet may
                        suspend  construction  for up to  two  (2)  years,  upon
                        receiving   BNSF's   written   approval,   not   to   be
                        unreasonably   withheld,  if  market  considerations  or
                        financial  issues warrant such a suspension.  During any
                        such suspension,  Pathnet's exclusive right to negotiate
                        fiber  optic   agreements   with  respect  to  the  Rail
                        Corridor,  as set forth in Section  4(b)(2) of the Fiber
                        Optic Access Agreement, also shall be suspended.

               (d)      If Pathnet  fails to provide  the  capacity  required by
                        Section  8  hereof,  and such  failure  continues  for a
                        period  of  thirty  (30)  days  after  Pathnet  receives
                        written  notice of such failure,  or such longer time as
                        may  be  reasonably  necessary,  provided  that  Pathnet
                        commences a cure within  thirty (30) days and  continues
                        diligently to cure until such cure is completed.

               (e)      If BNSF has required that Pathnet  suspend  construction
                        activities  on the  Premises  for  Pathnet's  failure to
                        comply with any BNSF safety requirements,  or on account
                        of Pathnet's interference with BNSF's rail operations or
                        maintenance  activities,  and  within  twenty  four (24)
                        hours after written notice requiring suspension, Pathnet
                        has not suspended such activities.

            6. Effect of Termination of Lease.  Immediately  upon termination of
this Lease, or if Pathnet  abandons any Fiber Optic  Facilities under this Lease
for a period of three years (which term shall mean the failure either to have in
use or to dedicate  commercially  reasonable  marketing efforts to sell conduit,
dark fibers or capacity  on the  Premises),  Pathnet  shall  relinquish  to BNSF
possession of the Premises,  provided  that,  for one hundred  eighty (180) days
following  such date Pathnet shall have the  obligation  to, and may continue to
enter the  Premises  for,  the sole  purposes  of: (i) removing all above ground
Fiber Optic  Facilities,  (ii) removing  below ground fiber Optic  Facilities as
desired  by Pathnet or to the extent  reasonably  requested  by BNSF,  and (iii)
restoring  the  Premises  substantially  to their  condition on the date of this
Lease,  reasonable wear and tear and casualty excepted,  or as approved by BNSF.
Failure by Pathnet to



                                        5
<PAGE>

comply with the foregoing  sentence by one hundred  eighty (180) days  following
the date of  termination  shall entitle BNSF to treat all remaining  Fiber Optic
Facilities as abandoned, and as the property of BNSF.

            7.  BNSF's  Right to  Suspend  Pathnet  Construction  and  Operating
Activities.  In the event that  Pathnet or a Pathnet  Party fails to comply with
BNSF safety or operational regulations, or interferes or is reasonably likely to
interfere with BNSF rail operations,  BNSF may require that Pathnet  immediately
suspend all construction  and/or operating  activities on the Rail Corridor.  In
such  event,  BNSF  shall  make  a  good  faith  effort  to  make  available  by
teleconference to discuss with Pathnet,  within four (4) hours after suspension,
an  individual  with  sufficient  authority  to resolve the issue,  who shall be
prepared to discuss the reason(s) for such  suspension and to attempt to resolve
the issue.  If the parties  are unable to resolve the issue in such  discussion,
then  BNSF and  Pathnet  will  escalate  the issue to the next  higher  level of
management,  and shall attempt to meet, at a mutually  agreeable  location,  or,
failing that, will have a telephonic  meeting,  within twenty four (24) hours of
the work suspension,  with the goal of resolving the issue at that meeting.  The
parties will  negotiate  in good faith to resolve the issue,  and to prevent the
occurrence of similar situations in the future.

            8. Fiber Optic Capacity for BNSF.

               (a) BNSF  has  retained  the  right  to use the  Premises  leased
hereunder  to the extent of retaining  the right to use fiber optic  capacity as
described  in this  Section 8,  either as located  on the Rail  Corridor  or, at
BNSF's option,  on an alternative  portion of Pathnet's fiber optic network,  to
the extent that BNSF's  desired  point of  termination  on Pathnet's  network is
within [***] miles of BNSF's  current rail network (which in this sentence shall
include the two rail corridors  included as "Rail  Corridors" in the Fiber Optic
Access Agreement and the rail corridors where rail service operating rights were
sold to shortline railroads by BNSF or one of its predecessors and BNSF retained
fiber optic rights in the shortline rail corridor,  as such current rail network
is shown on the map identified on Exhibit B). A map generally  depicting  BNSF's
current rail network is attached as Exhibit B.  Accordingly,  Pathnet shall make
available  to BNSF,  on an annual basis each year during the term of this Lease,
at BNSF's  request and at no charge to BNSF (except as set forth in Section 8(e)
or (g)),  commencing  on the later of: (i) the date of completion of the Initial
Construction,  or (ii) the date when capacity  becomes  available at the desired
location,  and continuing for the entire term of this Lease, the following fiber
optic capacity, either over the entire length of the Premises, or over any other
Fiber Optic Facilities that are part of Pathnet's fiber optic network within the
area  described in this Section 8(a), as specified by BNSF,  whether or not they
are located on any of BNSF's Rail Corridors:

                    (1)  Each  year  during  the  first  [***]  years  following
completion  of  Initial  Construction  (and  each  anniversary  of the  date  of
completion of Initial  Construction  shall be referenced  herein as "Anniversary
Date"),  [***], or its  equivalent,  of digital  transmission  capacity for each
route mile of Pathnet's Fiber Optic Facilities constructed under this Lease;

                    (2) Each year,  commencing  on the [***]  Anniversary  Date,
until  the  [***]  Anniversary  Date,  [***],  or  its  equivalent,  of  digital
transmission  capacity for each route mile of Pathnet's  Fiber Optic  Facilities
constructed under this Lease;

                    (3) Each year,  commencing  on the [***]  Anniversary  Date,
until  the  [***]  Anniversary  Date,  [***],  or  its  equivalent,  of  digital
transmission  capacity for each route mile of Pathnet's  Fiber Optic  Facilities
constructed under this Lease;

                    (4) Each year,  commencing  on the [***]  Anniversary  Date,
until  the  [***]  Anniversary  Date,  [***],  or  its  equivalent,  of  digital
transmission  capacity for each route mile of Pathnet's  Fiber Optic  Facilities
constructed under this Lease;


                                        6

<PAGE>
                    (5) Each year,  commencing  on the [***]  Anniversary  Date,
until  the  [***]  Anniversary  Date,  [***],  or  its  equivalent,  of  digital
transmission  capacity for each route mile of Pathnet's  Fiber Optic  Facilities
constructed under this Lease;

                    (6) Each year,  commencing  on the [***]  Anniversary  Date,
until  the  [***]  Anniversary  Date,  [***],  or  its  equivalent,  of  digital
transmission  capacity for each route mile of Pathnet's  Fiber Optic  Facilities
constructed under this Lease; and

                    (7) Each year,  commencing  on the [***]  Anniversary  Date,
until  the  [***]  Anniversary  Date,  [***],  or  its  equivalent,  of  digital
transmission  capacity for each route mile of Pathnet's  Fiber Optic  Facilities
constructed under this Lease; and

                    (8) Each year,  commencing  on the [***]  Anniversary  Date,
until the [***]  Anniversary  Date,  [***] miles, or its equivalent,  of digital
transmission  capacity for each route mile of Pathnet's  Fiber Optic  Facilities
constructed under this Lease.

          (b) The  fiber  optic  capacity  described  in this  Section  8 may be
specified  by BNSF in any  format  then being  provided  by Pathnet on the Fiber
Optic Facilities on which BNSF requests fiber optic capacity.  BNSF shall not be
entitled to the  increases in capacity as set forth in Section  8(a) until,  and
only to the extent that,  the fiber optic  capacity  increases  are required for
BNSF's uses,  either on the  Premises or on some other route in Pathnet's  fiber
optic network  within the area  described in the first  sentence of this Section
8(a). In addition,  the miles of digital transmission  capacity to which BNSF is
entitled may be  specified  by BNSF in its  equivalent  capacity,  so that,  for
example,  if BNSF were entitled to [***] over a 2,000 mile route,  this could be
[***]  over  [***]  miles  [***]  each over  [***],  [***]  over  [***],  or any
combination  of the above  totaling  the  capacity  to which  BNSF is  entitled,
provided that the maximum cross-section at any point shall not exceed the lesser
of [***] of the  then-available  capacity on the Fiber Optic  Facilities at that
location;  or (ii) (I) prior to the [***]  Anniversary  Date,  the equivalent of
[***]; (II) after the [***] Anniversary Date, and prior to the [***] Anniversary
Date, the equivalent of [***]; (III) after the [***] Anniversary Date, and prior
to the [***]  Anniversary  Date, the  equivalent of [***];  (IV) after the [***]
[***]  Anniversary Date, and prior to the [***] Anniversary Date, the equivalent
[***], and after the [***]  Anniversary Date, and prior to the [***] Anniversary
Date,  the  equivalent of [***].  Pathnet shall have no obligation to install or
upgrade any of its digital telecommunications transmission facilities to provide
to BNSF  any  fiber  optic  capacity  which  at that  time is not  available  on
Pathnet's Fiber Optic  Facilities  network.  Pathnet shall have no obligation to
provide  capacity  at  any  multiplexed  level  below  [***].  Pathnet  will  be
responsible  for  all  costs  associated  with  the  creating,  maintaining  and
transporting  the fiber optic  capacity to be  provided,  including  all optical
amplification and regeneration,  and terminating the capacity at the multiplexor
or other optronic equipment at which the capacity is to be terminated, including
the cost of such terminating equipment.  BNSF shall be responsible for all costs
of transport of the fiber optic  capacity from the point of  termination  in the
shelter used by Pathnet to BNSF's desired point of termination.


                                        7

<PAGE>
     (c) The fiber optic capacity  described in this Section 8 (including use of
the fibers addressed in Section 8(e)) may be utilized by BNSF and its Affiliates
(excluding any such Affiliate that competes in the telecommunications  business)
for their respective internal  communications  only. The capacity made available
to BNSF by the  terms  of this  Section  8 may not be  sold,  assigned,  leased,
licensed,  or otherwise made available to  third-parties,  or used in connection
with any  telecommunications  business.  Notwithstanding the foregoing,  BNSF is
discussing an agreement with a cellular  telecommunications carrier that gathers
BNSF  operational  data,  aggregates  the  BNSF  operational  data  with its own
commercial  cellular  traffic,  and delivers the BNSF  operational  data to BNSF
facilities.   BNSF  may  allow  the  cellular   telecommunications   carrier  or
partnership  to use a  portion  of  BNSF's  retained  fiber  optic  capacity  as
described in this  Section 8 in  connection  with the  foregoing  agreement.  In
addition, BNSF may permit this one or other cellular telecommunications carriers
or  partnerships  to use any  amount  of  additional  fiber  optic  capacity  as
described in this Section 8 for similar arrangements in the future. Any cellular
telecommunications  carrier or partnership  who utilizes  BNSF's  retained fiber
optic  capacity in this way shall pay to Pathnet a charge  equal to [***] of the
charge  that  Pathnet  then is  offering  for  sales  of like  capacity  in like
markets."

     (c) In the event that Pathnet permanently  discontinues  telecommunications
services  or  capacity of which BNSF is using a portion,  Pathnet  will  provide
sixty (60) days  prior  written  notice to BNSF to permit  BNSF to try to obtain
replacement capacity.

     (e)(1) Subject to the  conditions set forth in this Section 8(e),  BNSF may
require,  in  addition  to the fiber optic  capacity  detailed  in Section  8(b)
through 8(d), by notice in writing delivered to Pathnet no later than forty-five
(45) days after Pathnet's  submission of Proposed  Construction Plans respecting
any portion of the Fiber Optic Facilities,  that Pathnet install [***] fibers in
those Fiber Optic  Facilities,  at Pathnet's sole cost, which [***] fibers shall
be an  improvement  to property of BNSF,  from the Pathnet  node site to a point
along   the   route  of  the   Fiber   Optic   Facilities   closest   to  BNSF's
telecommunications  facility  (hereinafter  referenced as an "End Link").  These
[***] fibers shall be the same fiber type as that then being  installed in those
Fiber Optic  Facilities  for  Pathnet's own use, or to lease or sell capacity to
others,  and, at Pathnet's  sole  discretion,  may be contained  within the same
cable  sheath as Pathnet's  fibers or within a separate  cable  sheath.  Pathnet
shall be responsible  for the maintenance of, and repair of these fibers for the
term of this  Lease,  so long as some fibers on the  Premises,  other than these
[***] fibers, are being maintained.  Each End Link shall include a separate BNSF
handhole or manhole to be provided to BNSF, at Pathnet's sole cost,  which shall
be an improvement to property of BNSF, to terminate and/or provide connection to
BNSF's  telecommunications  facility.  Pathnet shall not be obligated to provide
fibers  to BNSF in any End Link  that is  longer  than  [***]  miles,  nor shall
Pathnet be obligated to alter the planned  route of the Fiber Optic  Facilities,
except where BNSF has agreed in writing in advance to pay Pathnet's  incremental
costs,  including  overhead,  of  extending  any fibers more than [***] miles or
altering the planned route of

                                        8
<PAGE>
the Fiber Optic Facilities. If BNSF first required Pathnet to extend an End Link
after  Commencement of  Construction on the Rail Corridor  segment where the End
Link is located,  BNSF shall reimburse  Pathnet for all such incremental  costs,
including overhead. Pathnet shall perform such installation unless, in Pathnet's
reasonable  judgment,  performance thereof would materially adversely affect the
Fiber  Optic  Facilities  or  Pathnet's   schedule  for  completion  of  Initial
Construction.

     (e)(2) Where BNSF  requests an End Link on any  corridor in BNSF's  current
rail  network,  as defined in Section  8(a),  Pathnet  shall provide two 23-inch
racks, and space  therefore,  and adequate  supporting  electrical  service,  in
equipment  shelters at terminal  and junction  sites on any BNSF Rail  Corridor.
Where BNSF  requests  fiber optic  capacity off of a corridor in BNSF's  current
rail  network,  as defined  in Section  8(a),  Pathnet  will make the  requested
capacity  available to BNSF at no charge,  and BNSF shall be  responsible to pay
the local exchange company to obtain the space, equipment and connection service
that BNSF requires.

     (f) In addition to the  capacity to which BNSF is entitled  under the terms
of this Section 8, BNSF shall have the right to purchase capacity on any portion
of Pathnet's  network on terms no less  favorable  than Pathnet is then offering
for sales of like capacity and product over like distances in like markets.

            9.    Construction and Operation of Fiber Optic Facilities.

                      (a) (1) BNSF  shall  make  available  for  inspection  and
                  copying by Pathnet, at Pathnet's sole cost: (i) maps of BNSF's
                  Rail Corridor, and lists and/or center diagrams indicating the
                  approximate location and nature of all bridges and


                                        9
<PAGE>

                  locations of all  tunnels,  overpasses  and other  significant
                  railroad  structures  located  on  the  Rail  Corridor;   (ii)
                  available   engineering   documents   in   BNSF's   possession
                  (including profiles,  lengths,  internal diameter, etc.), that
                  relate to bridges, overpasses or tunnels on the Rail Corridor,
                  which  Pathnet  reasonably  requests  in  connection  with its
                  activities   to   Construct   and   Operate  the  Fiber  Optic
                  Facilities;  and (iii) maps,  agreements  (redacted  to remove
                  confidential  business terms) or other  documents  showing the
                  identity,  location, rights and nature of other known users or
                  owners of portions of the Rail Corridor  whose use,  rights or
                  ownership  Pathnet and BNSF  reasonably  determine would cause
                  title,  possession or operational  problems or cost to Pathnet
                  (including, without limitation, reversion rights of underlying
                  fee owners and, exclusivity rights of third parties); and (iv)
                  other such documentation or information  reasonably  requested
                  by Pathnet to assist  Pathnet in its  activities  to Construct
                  and  Operate  the Fiber  Optic  Facilities  and which,  in the
                  opinion of BNSF, relates to or impacts upon the development of
                  Fiber  Optic  Facilities;  all to the extent  that (i) through
                  (iv) are readily and available from the records of BNSF or its
                  outside contractors  charged with retaining such records,  can
                  be  located  by  BNSF  in a  reasonable  search,  and  are not
                  confidential and proprietary to BNSF or third parties,  and if
                  they are made available to Pathnet without determining what is
                  confidential  or proprietary to BNSF,  Pathnet shall keep such
                  information  confidential and proprietary and shall not use it
                  for  any  purpose  other  than  as  set  forth   herein.   The
                  availability  of all  such  maps  or  documents  shall  not be
                  considered a guarantee or warranty that such maps or documents
                  are accurate or complete. The absence of markers, monuments or
                  maps  indicating  the  present  of  subterranean   facilities,
                  whether belonging to BNSF or otherwise, shall not constitute a
                  warranty or  representation  by BNSF that none exist.  Pathnet
                  accepts  this  Lease  with full  cognizance  of the  potential
                  presence  of the various  claims,  restrictions  and  physical
                  conditions  described  herein,  acknowledging  that  Pathnet's
                  costs to Construct and Operate the Fiber Optic  Facilities may
                  increase  by reason  thereof.  Any  failure by BNSF to provide
                  such documents shall not subject BNSF to any liability, costs,
                  expenses,  damages, losses, or claims to Pathnet or any of the
                  Pathnet Parties, except to the extent of failures due to gross
                  negligence or willful misconduct.

                      (2) Pathnet recognizes that any BNSF documents supplied by
                  BNSF were not prepared for use as real estate title maps. BNSF
                  does not represent or suggest that the property lines and Rail
                  Corridor  boundary  lines shown on such documents are accurate
                  or that any other  information  contained on such documents is
                  correct.

                      (b) Prior to commencing construction of the Fiber Optic
                  Facilities, Pathnet, at its sole cost and risk, shall submit
                  to BNSF four sets of prints showing in detail the proposed
                  initial construction of all Fiber Optic Facilities on the
                  Premises, including every proposed element, item of equipment
                  and improvement included therein that Pathnet plans to locate
                  on the Premises, which prints shall be referenced herein as
                  "Proposed Construction Plans". Where Fiber Optic Facilities


                                       10
<PAGE>

                  extend  over a route  longer  than 150  miles,  Pathnet  shall
                  submit Proposed  Construction  Plans to BNSF for each 150 mile
                  segment,  as and when they are  ready,  and shall use its best
                  efforts  to  avoid  any  single  submission  of such  Proposed
                  Construction Plans for a segment longer than 150 miles.

                      (c) (1) BNSF shall review the Proposed Construction Plans,
                  and  may  disapprove  them,  or  propose   changes,   but  any
                  disapproval  or  proposed  change  must be made in writing and
                  delivered to Pathnet  within thirty (30) days of the date BNSF
                  receives such plans.  Pathnet  acknowledges  that if BNSF does
                  not disapprove the Proposed Construction Plans, or propose any
                  changes to them, this does not constitute a  determination  by
                  BNSF that  there are no design  defects  in such plans or that
                  Fiber Optic  Facilities  built in  accordance  with such plans
                  could be built or operated  safely.  If BNSF  disapproves  the
                  Proposed   Construction   Plans  because  it  determines  that
                  construction  and/or maintenance of the Fiber Optic Facilities
                  likely would interfere with BNSF's rail operations or create a
                  safety  hazard and that the Fiber Optic  Facilities  cannot be
                  located within BNSF's Rail Corridor for a specified  distance,
                  and Pathnet  then  determines  that the cost of  locating  its
                  Fiber Optic  Facilities off of BNSF's Rail Corridors  would be
                  significantly  higher for Pathnet and so notifies  BNSF,  then
                  BNSF shall  make  reasonable  efforts to work with  Pathnet to
                  determine  if  there  is a  way  to  locate  the  Fiber  Optic
                  Facilities   somewhere   on  BNSF's  Rail   Corridor   without
                  interfering  with BNSF's rail  operations or creating a safety
                  hazard.  If BNSF  disapproves  all or any part of the Proposed
                  Construction  Plans,  BNSF,  at the time of such  disapproval,
                  shall provide to Pathnet a written  explanation of the reasons
                  for  disapproval  and suggested  cures,  if any.  Pathnet then
                  shall submit revised Proposed  Construction Plans, which shall
                  be subject to the same review procedures just described.  Once
                  the thirty  (30) day period  described  above has  expired and
                  BNSF has not  disapproved  the Proposed  Plans (or the revised
                  Proposed Plans,  if applicable),  the same shall be the "Final
                  Construction   Plans"   which  term  shall  also  include  any
                  subsequent  modifications  to the  Plans as  provided  herein.
                  Pathnet  shall not  commence  construction  of the Fiber Optic
                  Facilities  along any  portion  of the Rail  Corridor  in each
                  instance  until it has received  written notice from BNSF that
                  BNSF does not disapprove the Final Construction Plans.

                        (2) If at any time Pathnet desires to amend the Proposed
                  Construction  Plans or the Final Construction  Plans,  Pathnet
                  must submit four sets of prints showing such amendment to BNSF
                  in the same manner  described  for  submission of the Proposed
                  Construction  Plans.  If such  amendment  is not  modified  or
                  disapproved by BNSF in the manner  specified for  modification
                  or  disapproval  of  Proposed  Construction  Plans,  the Final
                  Construction   Plans  will  be  deemed  as  of  such  time  to
                  incorporate such amendment

                   (d) In  constructing  the Fiber  Optic  Facilities,  and with
                  respect to all entries  onto the Rail  Corridor by Pathnet and
                  the Pathnet Parties to Construct and




                                       11
<PAGE>

                  Operate the Fiber Optic Facilities,  or for any other purpose,
                  Pathnet shall  coordinate  with BNSF,  with the  understanding
                  that BNSF's  presence and  activities on the Rail Corridor for
                  any  purpose,  except as  limited  by the Fiber  Optic  Access
                  Agreement, shall have priority over Pathnet's activities under
                  this Lease.

                        (e) The  Construction  Schedule shall be used by Pathnet
                  and  BNSF  to  coordinate  personnel,   activities  and  train
                  movements.  Pathnet shall amend the Construction  Schedule, as
                  required,  to reflect any and all  schedule  changes and shall
                  furnish  promptly to BNSF any amended  Construction  Schedule.
                  BNSF may rely on the Construction Schedule to schedule flagmen
                  and  other  BNSF  personnel   whose  duties  require  them  to
                  accompany personnel constructing the Fiber Optic Facilities.

                        (f) If,  at any  time it  appears  to BNSF  that  BNSF's
                  tracks  may be  "Fouled"  (defined  in this  Lease to mean the
                  presence of  equipment  and/or  personnel of Pathnet or any of
                  the Pathnet Parties on a railroad track or within  twenty-five
                  (25)  feet  of  the  centerline  of  any  railroad  track)  in
                  connection  with the exercise of  Pathnet's  rights under this
                  Lease,  BNSF personnel may be provided,  at BNSF's option,  to
                  accompany  Pathnet  and/or any of the Pathnet  Parties who may
                  Foul  BNSF's  tracks.  Pathnet  shall  bear  the  entire  cost
                  associated  with such BNSF  personnel,  regardless  of whether
                  such personnel are actually utilized in a particular case, and
                  Pathnet agrees promptly to pay all invoices for such personnel
                  that are  submitted  to it by  BNSF.  The  failure  of BNSF to
                  furnish such personnel  shall not relieve  Pathnet,  or any of
                  the Pathnet  Parties,  of any obligations or liabilities it or
                  they otherwise have assumed hereunder.

                        (g) Pathnet, and all Pathnet Parties, who are or will be
                  involved in any  activities or presence  permitted  under this
                  Lease on or near  the Rail  Corridor,  shall  comply  with all
                  applicable BNSF safety rules and regulations,  as set forth in
                  Exhibits "C" and "C-1" attached hereto. BNSF shall pay for any
                  such materials or safety training personnel (but Pathnet shall
                  pay any BNSF safety  contractor's cost,  including the cost of
                  any  instructors);  Pathnet  shall pay  salaries,  any  travel
                  expenses  or other  costs  for  Pathnet,  and any and all such
                  Pathnet Parties, to receive such safety training.

                        (h) As promptly as possible,  but in no event later than
                  six months after each segment of the Fiber Optic Facilities is
                  installed,  Pathnet  shall  furnish to BNSF "As  Built"  Fiber
                  Optic Facilities drawings.

                        (i) During and in  furtherance  of completion of Initial
                  Construction,  Pathnet  and the  Pathnet  Parties,  subject to
                  BNSF's prior written approval, may use, as required, and at no
                  additional charge, available portions of the Rail Corridor, as
                  identified  by  local  BNSF  personnel,  for  the  purpose  of
                  allowing Pathnet,  or any of the Pathnet Parties, to erect, at
                  its sole cost and risk, temporary



                                       12
<PAGE>

                  structures  and  fences  to  protect  Pathnet's   material  or
                  equipment  necessary for the  construction  of the Fiber Optic
                  Facilities,  including staging of construction  activities and
                  storage  of  materials,  provided  that  such  structures  and
                  fences:  (i) shall not interfere  with, or disrupt in any way,
                  other  than in a manner  approved  in  advance  by  BNSF,  any
                  operations  conducted  by  BNSF,  or any  activities  of third
                  parties,  on  the  Rail  Corridor;  and  (ii)  to  the  extent
                  reasonably  feasible,  shall be as shown and  described in the
                  Final Construction Plans.  Pathnet shall restore any land used
                  for such structures and fences  substantially  to its previous
                  condition before Initial Construction is complete,  reasonable
                  wear and tear and casualty excepted, and shall remove all such
                  structures,  fences,  equipment and material placed thereon by
                  Pathnet,  or  any  of  the  Pathnet  Parties,  before  Initial
                  Construction is complete. In the event Pathnet does not comply
                  with  the  foregoing  sentence,   BNSF,  following  reasonable
                  advance notice to Pathnet,  may take the actions  specified in
                  that  sentence,  and Pathnet shall  reimburse to BNSF all cost
                  incurred by BNSF in taking such actions.

                        (j)  Subject to BNSF's  approval  and  execution  by the
                  applicable  utility  company of a BNSF  standard form right of
                  entry  permit,  Pathnet may bring  electrical  power and other
                  utilities to the Fiber Optic  Facilities.  Pathnet  shall make
                  its own arrangements, at its sole cost and risk, to obtain all
                  electrical power and other utilities or services  necessary to
                  Construct and Operate the Fiber Optic Facilities,  and Pathnet
                  shall  indemnify,  defend and hold BNSF  harmless  against any
                  liability  to any  utility or service  company  arising out of
                  utilities  or  services  ordered  or used by or on  behalf  of
                  Pathnet,  except to the extent caused by the gross  negligence
                  or willful misconduct of BNSF or its agents or contractors, or
                  any of their  employees.  Utilities  and  services  needed  by
                  Pathnet at each  junction or  repeater  site shall be as shown
                  and  described  in the Final  Construction  Plans and shall be
                  part of Fiber Optic  Facilities for purposes of this Lease. If
                  the location of such  utilities or services  serving the Fiber
                  Optic  Facilities must be changed because of its  interference
                  to BNSF railroad purposes or industrial development related to
                  railroad  purposes,  BNSF shall  notify  Pathnet  and  Pathnet
                  promptly shall  relocate the affected Fiber Optic  Facilities,
                  at  Pathnet's  sole cost,  in a manner  satisfactory  to BNSF.
                  Power  sources  installed  by  Pathnet  shall  be  part of the
                  Initial Construction.

                        (k) Pathnet,  at its sole cost and risk,  shall  furnish
                  all  materials,   supervision,   labor,   parts,   components,
                  equipment  and  structures  necessary to Construct and Operate
                  the Fiber Optic Facilities, or any part thereof, in accordance
                  with this Lease.  Any and all work by Pathnet and/or a Pathnet
                  Party  under the  authority  of this Lease  shall be done in a
                  good and  workmanlike  manner,  in  conformity  with the Final
                  Construction  Plans,  and  shall  comply  with all  applicable
                  engineering,  safety,  and other  statutes,  laws,  ordinance,
                  regulations,  rules,  codes,  orders or  specifications of any
                  public body or authority  having  jurisdiction  over the Fiber
                  Optic Facilities or BNSF's rail operations, including,



                                       13
<PAGE>

                  but not limited to, the Federal Communications Commission and
                  the Federal Railroad Administration.

                        (l) All  installations by Pathnet and/or a Pathnet Party
                  under  the  authority  of  this  Lease  must  meet  or  exceed
                  applicable specifications of the public authority of the state
                  in which the installation is located and must be in compliance
                  with all existing  federal,  state or local laws,  ordinances,
                  and regulations.  In no case shall any part of the Fiber Optic
                  Facilities be located in a manner that will interfere with the
                  presence or activities  of BNSF,  or any third parties  acting
                  within their rights on the Rail  Corridor as they exist on the
                  date of this  Lease.  The  manner of,  and the  equipment  and
                  devices  to be  used  for,  any  installation,  relocation  or
                  removal of the Fiber  Optic  Facilities,  shall be reviewed in
                  advance by BNSF, as set forth herein.

                        (m) Fiber Optic  Facilities may be installed by Pathnet,
                  at its sole cost and risk, on bridges or other water crossings
                  on the Rail  Corridor by attachment to BNSF's fixed or movable
                  bridges or crossing  structures,  as  available,  as agreed by
                  BNSF and Pathnet, as shown in the Final Construction Plans.

                        (n)  Installation of Fiber Optic Facilities under public
                  roadways  shall  be at  Pathnet's  sole  cost and  risk,  at a
                  location and depth as agreed to by BNSF, as shown on the Final
                  Construction Plans.

                        (o) Installation of Fiber Optic Facilities crossing over
                  or under other existing  facilities in the Rail Corridor shall
                  be located and installed,  at Pathnet's sole cost and risk, in
                  accordance  with  conditions  set forth in this Section 9, and
                  applicable  requirements  of the owner of each such  facility.
                  If, in the course of any activity  that Pathnet is  authorized
                  to undertake under the terms of this Lease, any changes in any
                  pipelines,   sewers,   conduits,   fences,  power,  signal  or
                  communication  lines or other  utility,  facility  or Railroad
                  Facilities is necessary (either temporary or permanent),  such
                  change shall require  prior review by BNSF,  and a letter from
                  BNSF indicating  that it does not disapprove such change,  and
                  all other  necessary  approvals  from third  parties.  Pathnet
                  shall  indemnify,  defend and hold BNSF  harmless  against all
                  claims from any third party relating to any such activity.

                        (p) All  cranes,  lifts,  drilling  equipment,  or other
                  machinery  that is to be operated in the  vicinity of any Rail
                  Facilities, electric transmission lines or other facilities in
                  connection  with Initial  Construction  or any other  activity
                  that Pathnet is  authorized  to  undertake  under the terms of
                  this  Lease,  shall  be  electrically  grounded  in  a  manner
                  reviewed   by,  and  not   disapproved   by,   BNSF.   Pathnet
                  acknowledges  that if BNSF does not disapprove such plans this
                  does not constitute a determination by BNSF that such plans or
                  activities  are safe.  All personnel of Pathnet and any of the
                  Pathnet  Parties  that  are  operating  such  cranes,   lifts,
                  drilling equipment,  or other machinery shall have appropriate
                  and sufficient



                                       14
<PAGE>

                  experience  in  operating  of the  machinery  being used,  and
                  Pathnet  shall be  prepared  to  certify  the  extent  of this
                  experience upon request by BNSF.

                        (q) If Pathnet,  or any of the Pathnet  Parties,  acting
                  under the  authority  granted  by this  Lease,  discovers  any
                  scientific or historic  artifacts,  Pathnet  immediately shall
                  notify BNSF of such discovery and shall protect such artifacts
                  until  they are  identified  and  removed  by the  appropriate
                  authorities.

                        (r) BNSF shall  have the right to verify by  inspection,
                  at the sole cost of Pathnet, that the location of the work and
                  the materials  constituting the Initial Construction,  or used
                  operation  of the Fiber Optic  Facilities,  are in  compliance
                  with the Final  Construction  Plans.  BNSF shall give  Pathnet
                  reasonable  notice of such  inspections,  and Pathnet,  at its
                  option,  may designate a  representative  to accompany  BNSF's
                  representative   on  such   inspections.   If,   following  an
                  inspection,   BNSF  reasonably   determines  that  Pathnet  is
                  conducting  activities  that do not comply  with the  approved
                  Final  Construction  Plans,  the  parties  hereto  shall  meet
                  promptly  to discuss  the  situation  and  determine  a remedy
                  satisfactory to BNSF. If BNSF is not satisfied with the remedy
                  selected at such meeting,  and its subsequent  implementation,
                  Pathnet's   rights  to  Construct   and  Operate  Fiber  Optic
                  Facilities shall be suspended  entirely until the parties have
                  settled  on  a  remedy  that  is  satisfactory  to  BNSF.  The
                  provisions of Section 7 shall apply to any  suspension of work
                  pursuant to this Section.

                        (s) BNSF's expenses for any work performed for or at the
                  expense of Pathnet  pursuant  to the terms of this Lease shall
                  be paid by Pathnet  promptly  upon  Pathnet's  receipt of each
                  itemized  bill  therefor.  Expenses so billed by BNSF shall be
                  only  those  attributable  to the  work  performed  and  shall
                  include, without limitation,  cost of labor (whether performed
                  by BNSF or a contractor  of BNSF) and  supervision,  necessary
                  travel or transportation  expenses,  lodging, meals, equipment
                  rental,  materials,  and any freight and  handling  charges on
                  materials  used,  plus  standard  additives A list of standard
                  additives  then in effect will be provided to Pathnet with any
                  billing containing such activities.

                        (t) Pathnet, at its sole cost and risk: (i) shall secure
                  and maintain in effect all federal,  state, and local permits,
                  licenses, platting,  subdivisions,  and/or zoning approvals or
                  any other land use  requirement  that is required to Construct
                  and  Operate the Fiber Optic  Facilities,  including,  without
                  limitation, crossing, zoning, building, health, environmental,
                  and communication  permits and licenses,  and Pathnet,  at its
                  sole  cost and  risk,  shall  satisfy  any and all  conditions
                  required  to obtain,  maintain  and comply  with any  required
                  permit,  license  or zoning  approval  or any  other  land use
                  requirement;   and  (ii)  shall  indemnify,  defend  and  hold
                  harmless BNSF from and against  payment of the cost  therefor,
                  and  against  any fines or  penalties  that may be levied  for
                  failure  to  procure,  maintain  or to  comply  with  any such
                  permits,  licenses  and/or  zoning,  or  any  other  land  use
                  requirement  as well as any remedial costs incurred by BNSF in
                  curing any such


                                       15
<PAGE>

                  failure.  BNSF shall  cooperate  with  Pathnet in securing and
                  maintaining  any such permits or licenses,  and Pathnet  shall
                  reimburse  any  reasonable  out-of-pocket  costs  of  BNSF  in
                  providing such cooperation..

                        (u) Any environmental  impact statements required by any
                  governmental agency in connection with any activity of Pathnet
                  to Construct and Operate the Fiber Optic  Facilities  shall be
                  prepared  by  Pathnet  at  Pathnet's  sole cost and risk,  and
                  Pathnet,  at its sole cost and  risk,  shall  comply  with any
                  conditions required by any applicable  government authority in
                  connection with, or following from, any  environmental  impact
                  statement.

                        (v) BNSF shall  cooperate with Pathnet,  as requested by
                  Pathnet,  at no  out-of-pocket  cost  to  BNSF,  in  Pathnet's
                  efforts  to obtain  and  maintain  any  permits,  licenses  or
                  approvals  of  government  agencies  or  authorities,  or  any
                  approvals of any necessary  third parties,  for the use of any
                  structures or facilities (including streets,  roads or utility
                  poles) along portions of the Rail Corridor.  The provisions of
                  this  paragraph  will not be deemed to require  BNSF to expend
                  significant internal resources.

            10.   Entry Notice.

                        (a) During progress of the Initial Construction, Pathnet
                  shall  give BNSF at least  five days'  written  notice  before
                  initial entry by Pathnet, or any of the Pathnet Parties,  upon
                  any portion of the Rail Corridor.

                        (b) After completion of Initial Construction,  any entry
                  by Pathnet or any Pathnet  Party onto the Rail  Corridor  that
                  does not constitute Routine Maintenance and Operation (defined
                  later herein) of the Fiber Optic Facilities, or is not related
                  to an Emergency  (defined  later  herein) shall  require:  (i)
                  advance  written notice from Pathnet to BNSF not less than ten
                  days prior to such planned  entry,  such notice to specify the
                  purpose  of  the  entry;   (ii)  if  entry  involves  any  new
                  construction,   reconstruction,  or  removal  of  Fiber  Optic
                  Facilities,  four (4) sets of prints  showing  in detail  such
                  proposed new  construction,  reconstruction,  or removal;  and
                  (iii)   approval  by  BNSF,   which   approval  shall  not  be
                  unreasonably withheld or delayed, taking in account the nature
                  of the proposed  entry. As used herein,  "Routine  Maintenance
                  and Operation" shall mean maintenance and operation by Pathnet
                  and/or a Pathnet Party of the Fiber Optic Facilities that does
                  not require  any: (i)  excavation  of soil that could alter or
                  disturb,  or threaten  the support of, or ability to use,  any
                  Rail Facility;  (ii) use of heavy machinery  within 50 feet of
                  any  railroad  track;  or (iii) an activity or presence  which
                  results  in  a  Fouled   railroad   track.   As  used  herein,
                  "Emergency"  shall  mean  that  service  on  the  Fiber  Optic
                  Facilities has been interrupted or significantly  disrupted or
                  such  interruption  is reasonably  likely,  or that there is a
                  material  adverse  threat to the integrity of Pathnet's  fiber
                  optic network, in circumstances that make it



                                       16
<PAGE>

                  impractical  for  Pathnet  or any  Pathnet  Party to give BNSF
                  normal  advance  written  notice  of entry  onto  BNSF's  Rail
                  Corridor.

                        (c) During Routine  Maintenance  and Operation,  Pathnet
                  and/or any Pathnet Party may enter the Rail  Corridor  without
                  notice to BNSF,  for the sole  purpose of Routine  Maintenance
                  and Operation;  provided,  however, that: (i) if any entry for
                  such purpose is likely to result in a Fouled  railroad  track,
                  Pathnet shall give BNSF written notice of the places where and
                  the manner in which  entry is  required  not less than two (2)
                  days,  and not more than seven (7) days,  prior to such entry;
                  and (ii)  without  BNSF's  prior  consent,  which shall not be
                  unreasonably  withheld,  neither Pathnet nor any Pathnet Party
                  shall  enter  the  Rail  Corridor  at  any  place  where  BNSF
                  previously has disapproved entry.

                        (d) In the event of an  Emergency,  Pathnet  and/or  any
                  Pathnet  Party may enter the Rail Corridor  without  notice to
                  BNSF,  for the sole  purpose  of dealing  with the  Emergency;
                  provided,  however, that: (i) if any entry for such purpose is
                  likely to result in a Fouled  railroad  track,  Pathnet  shall
                  obtain  verbal or  written  approval  from BNSF  prior to such
                  entry,  promptly  followed  by  written  confirmation  of such
                  approval,  which may be provided within 24 hours after Pathnet
                  has  addressed  the  Emergency;  (ii) if any  entry  for  such
                  purpose is likely to require the excavation of soil that could
                  alter or  disturb,  or  threaten  the support of or ability to
                  use,  any Rail  Facility,  or would  involve  the use of heavy
                  machinery within 50 feet of any railroad track,  Pathnet shall
                  give BNSF verbal or telephonic notice of the places where, and
                  the manner in which,  entry is  required  prior to such entry,
                  promptly  followed  by  written  confirmation  which  shall be
                  obtained  within 24 hours  after  Pathnet  has  addressed  the
                  Emergency. and (iii) without BNSF's prior consent, which shall
                  not be unreasonably withheld,  neither Pathnet nor any Pathnet
                  Party  shall  enter the Rail  Corridor at any place where BNSF
                  previously has  disapproved  entry.  Both parties  acknowledge
                  that an  Emergency  involving a  derailment  or other  similar
                  situation could cause significant damage to both parties,  and
                  that  both   parties   will  need  to  respond   promptly  and
                  effectively to the  situation.  Subject to (i), (ii) and (iii)
                  above, in the event of an Emergency  involving a derailment or
                  other similar situation, BNSF agrees that it will not prohibit
                  Pathnet from  responding  to the situation as  appropriate  to
                  repair or protect the Fiber Optic  Facilities,  provided  that
                  Pathnet  does not  interfere  with BNSF's rail  operations  or
                  related  activities.  The  parties  will  cooperate  with  one
                  another  to enable  each  party to take  appropriate  response
                  action as promptly and effectively as possible.

            11.  Maintenance of Premises and Fiber Optic Facilities.  BNSF shall
not be  responsible  for  maintenance  of any  Fiber  Optic  Facilities,  or for
clearing  or removal of trees,  shrubs,  plants,  ice,  snow or debris  from the
Premises.  Pathnet  shall be  responsible  to remove from the Rail  Corridor any
debris  resulting  from any of the  activities  of Pathnet or any of the Pathnet
Parties acting under the authority of this Lease.



                                       17
<PAGE>

            12.   Track Support: Materials Storage.

                  (a) During any work by Pathnet or any of the  Pathnet  Parties
            pursuant  to this  Lease,  Pathnet  shall  ensure  that all  tracks,
            supporting  structures  and  roadbed  of BNSF is  supported  in such
            manner as is  necessary  for the safe  operation of BNSF without any
            slower  speed  or  other  train  operating  restrictions  and,  upon
            completion of such work,  Pathnet shall ensure that all such tracks,
            supporting  structures,  and  the  roadbed  are  returned  to  their
            pre-existing condition, all at Pathnet's sole cost.

                  (b) Except as  expressly  set forth in the Final  Construction
            Plans,  Pathnet  shall not  store or  temporarily  place any  goods,
            materials,  or equipment on the Rail Corridor: (i) near a highway or
            private  grade  crossing in such a manner as to  interfere  with the
            sight  distance of anyone  approaching  such  crossing;  (ii) within
            fifteen feet of the end of any tie in any railroad  track;  or (iii)
            within such greater distance as required by an applicable government
            authority.  Notwithstanding  any  other  provision  in  this  Lease,
            Pathnet shall not store or  temporarily  place fuel or any Hazardous
            Substance (as defined later herein) on the Rail Corridor, other than
            as may be  approved  in  writing  in  advance  by BNSF.  If  Pathnet
            knowingly  discovers  any  Hazardous  Substances  on  the  Premises,
            Pathnet will promptly  notify BNSF,  suspend or relocate  activities
            that would disturb the Hazardous Substance,  and permit BNSF to take
            appropriate  actions.   BNSF  will  respond  promptly  to  any  such
            situation.

            13.  Facility  Location Signs.  Pathnet,  at its sole cost and risk,
shall furnish,  erect, and thereafter maintain signs showing the location of all
underground Fiber Optic Facilities.  The size, form, color, text, location,  and
spacing of such signs shall be subject to advance review by BNSF, and such signs
shall be in conformance with standard industry practices and shall be considered
part of the Fiber Optic Facilities.

            14.   Relocations.

                  (a) If BNSF  determines  that the location of any of the Fiber
            Optic  Facilities  must be changed due to either:  (i) relocation or
            placement of any Rail Facilities;  (ii) rail operating  improvements
            for BNSF (or for any other party  offering  rail service in the Rail
            Corridor via rights granted or conveyed by BNSF);  (iii) locating or
            modifying  a  rail   customer's   facilities,   buildings  or  other
            improvements  along BNSF's rail route,  or locating or modifying any
            facilities, buildings or other improvements for railroad purposes or
            industrial  development  related to railroad  purposes;  or (iv) any
            reason beyond the control of BNSF, BNSF shall notify Pathnet of such
            plans and  shall use  reasonable  efforts  to secure an  alternative
            location for the Fiber Optic Facilities within the Rail Corridor, in
            light of BNSF's business assets, plans and activities and the rights
            of third parties in the Rail Corridor, or to provide Pathnet with an
            opportunity to protect its Fiber Optic  Facilities if Pathnet may do
            so without  interference  with the situation  requiring  relocation;
            provided however, BNSF shall not be obligated to spend any money, or
            incur any



                                       18
<PAGE>

            liabilities,  to  secure  such  an  alternative  location.  If  such
            alternative  location is found on the Rail  Corridor,  Pathnet shall
            move  the  affected  Fiber  Optic  Facilities  to  such  alternative
            location,  at Pathnet's sole cost and risk, as soon as  practicable.
            If a location for Fiber Optic Facilities cannot be found on the Rail
            Corridor, Pathnet shall move the affected Fiber Optic Facilities off
            of the Rail Corridor as soon as practicable,  at Pathnet's sole cost
            and risk.

                  (b) In the event BNSF  desires  that Pathnet also move certain
            Rail   Facilities    (excluding   tracks   and   track   structures)
            simultaneously with moving its Fiber Optic Facilities, BNSF shall so
            notify  Pathnet  in  writing,  and  Pathnet  shall  move  such  Rail
            Facilities  and  shall  invoice  BNSF  for  the  reasonable,  actual
            incremental  costs,  including  reasonable  overhead costs, that are
            incurred by Pathnet in moving such Rail Facilities.

                  (c) If  BNSF  desires  to  relocate  any of  the  Fiber  Optic
            Facilities in order to  accommodate a third party (other than as set
            forth in Section 14(a)),  BNSF shall so notify Pathnet,  and Pathnet
            promptly  thereafter  shall submit to BNSF a  reasonable,  detailed,
            itemized estimate,  including reasonable contingencies  ("Estimate")
            of its  anticipated  reasonable  actual costs to relocate such Fiber
            Optic Facilities  (including reasonable overhead costs not to exceed
            ten percent (10%) of actual  costs).  Upon receiving from BNSF fifty
            percent of the amount of the  Estimate,  Pathnet shall  proceed,  as
            expeditiously as feasible under the circumstances, to relocate those
            Fiber  Optic  Facilities  at a cost not to exceed  one  hundred  ten
            percent (110%) of the Estimate.  Upon completion of such relocation,
            and  submission to BNSF of invoices  documenting  all costs thereof,
            BNSF promptly shall pay the balance of such costs to Pathnet.

                  (d) Pathnet  acknowledges  that BNSF's ownership rights in all
            or certain  portions of the Rail Corridor may terminate,  or revert,
            if BNSF  ceases  to use the Rail  Corridor  for rail  transportation
            purposes,  or, in some  cases if BNSF uses the Rail  Corridor  for a
            purpose inconsistent with rail transportation purposes, or for other
            reasons,  such as termination of franchise rights,  and that if this
            occurs, Pathnet might be required either to relocate its Fiber Optic
            Facilities  or  acquire  from the  appropriate  party  the  right to
            continue  to use the Fiber  Optic  Facilities.  BNSF  shall  have no
            obligation  not to abandon  rail  service over all or any portion of
            the Rail Corridor,  no obligation not to use the Rail Corridor for a
            purpose  inconsistent  with  rail  transportation  purposes,  and no
            obligation  to  extend  the  term  of  BNSF's  franchise  rights  or
            ownership rights in the Rail Corridor.

            15.  Condemnation.  In the event that any  portion  of the  Premises
becomes  the subject of  condemnation  proceedings,  BNSF shall make  reasonable
efforts to notify Pathnet promptly. Pathnet's interest in the personal property,
improvements,  and  facilities  comprising the Fiber Optic  Facilities  shall be
valued  separately from BNSF's ownership  interest in the Fiber Optic Facilities
and the  Premises,  and BNSF and  Pathnet  shall  seek to have any  condemnation
award,  or sale in lieu of  condemnation,  apportioned  between Pathnet and BNSF
based on the relative value of their specific  ownership  interests in the Fiber
Optic Facilities and the Premises.



                                       19
<PAGE>

            16.  Conveyance of Rail  Corridor.  In the event BNSF conveys all or
any portion of the Rail Corridor,  in circumstances not covered by Section 14 or
Section 15 of this  Lease,  such  conveyance  shall be  subject to any  existing
rights of Pathnet under this Lease and the Fiber Optic Access Agreement,  to the
extent  permitted by applicable  laws and  agreements  entered into prior to the
date of this Lease.

            17. Compliance with Laws.  Pathnet, in exercising any and all rights
under this Lease, shall comply with all applicable laws, regulations, ordinance,
rules,  decisions and orders  ("Laws")  applicable  to Pathnet  and/or the Fiber
Optic Facilities,  or resulting from the exercise of Pathnet's rights, and shall
have the sole  responsibility  for all  costs  and  risks  associated  with such
compliance.  Pathnet shall indemnify,  defend and hold harmless BNSF against any
claims,  damages,  costs,  fines or penalties  arising in any way from Pathnet's
breach of this Section 17.

            18.   Liability: Indemnification. PATHNET HEREBY RELEASES BNSF FROM,
AND AGREES TO INDEMNIFY, DEFEND, PROTECT, AND HOLD BNSF HARMLESS AGAINST, ANY
AND ALL CLAIMS, SUITS, JUDGMENTS, LIABILITIES AND EXPENSES (INCLUDING, BUT NOT
LIMITED TO, REASONABLE ATTORNEYS' FEES) ARISING OUT OF OR RELATED TO:

            (1) ANY LOSS OF AND/OR  DAMAGE TO THE REAL OR  PERSONAL  PROPERTY OF
BNSF,  PATHNET OR THIRD  PARTIES AND ANY LOSS AND/OR DAMAGE ON ACCOUNT OF INJURY
TO, OR DEATH OF, ANYONE,  CAUSED BY OR GROWING OUT OF PATHNET'S,  OR ANY PATHNET
PARTY'S  PRESENCE OR ACTIVITIES ON OR NEAR THE RAIL CORRIDOR,  REGARDLESS OF ANY
NEGLIGENCE  OF BNSF OR ANY PARTY THEN  PERFORMING  AS A  CONTRACTOR  OR AGENT OF
BNSF,  EXCEPT TO THE EXTENT (AND ONLY TO THE EXTENT) THAT SUCH LOSS OR DAMAGE IS
PROXIMATELY CAUSED BY THE GROSS NEGLIGENCE OR WILLFUL MISCONDUCT OF BNSF OR SUCH
CONTRACTOR OR AGENT OF BNSF;

            (2) (i) EXCEPT IN  CONNECTION  WITH THE FIBERS  AND  CAPACITY  TO BE
PROVIDED TO BNSF, SERVICE INTERRUPTION, CESSATION, OR UNRELIABILITY OF THE FIBER
OPTIC FACILITIES  CAUSED BY ANY PERSON,  REGARDLESS OF ANY NEGLIGENCE OF BNSF OR
ANY PARTY THEN PERFORMING AS A CONTRACTOR OR AGENT OF BNSF, EXCEPT TO THE EXTENT
(AND  ONLY  TO  THE  EXTENT)  THAT  SUCH  SERVICE  INTERRUPTION,   CESSATION  OR
UNRELIABILITY  WAS CAUSED BY THE GROSS NEGLIGENCE OR WILLFUL  MISCONDUCT OF BNSF
OR SUCH  CONTRACTOR  OR AGENT OF BNSF,  OR (ii)  EXCEPT IN  CONNECTION  WITH THE
FIBERS AND  CAPACITY TO BE PROVIDED TO BNSF,  LIBEL,  SLANDER,  INFRINGEMENT  OR
COPYRIGHT,  OR UNAUTHORIZED  USE OF ANY TRADEMARK,  TRADE NAME, OR SERVICE MARK,
ARISING OUT OF THE MATERIAL,  DATA,  INFORMATION OR OTHER CONTENT TRANSMITTED OR
RECEIVED  OVER THE FIBER OPTIC  FACILITIES,  IN EACH CASE  REGARDLESS OF WHETHER
SUCH CLAIMS, SUITS, JUDGMENTS, OR LIABILITIES ARISE FROM NEGLIGENCE, ACTIONS, OR
INACTION OF BNSF, OR ANY PARTY USING THE RAIL CORRIDOR WITH  PERMISSION OF BNSF;
AND



                                       20
<PAGE>

            (3)   ANY BREACH OF THE TERMS OF THIS LEASE BY PATHNET OR ANY OF THE
PATHNET PARTIES.

            WITHOUT LIMITATION OF ANY OF THE FOREGOING, PATHNET HEREBY AGREES TO
INDEMNIFY,  DEFEND,  PROTECT AND HOLD BNSF HARMLESS FROM AND AGAINST ANY AND ALL
LOSS,  DAMAGE,  COST AND EXPENSE SUSTAINED,  SUFFERED,  OR INCURRED BY BNSF AS A
RESULT OF THE EXISTENCE OF ANY HAZARDOUS  SUBSTANCE  WITHIN THE RAIL CORRIDOR TO
THE EXTENT CAUSED BY, CONTRIBUTED TO, EXPOSED BY OR AGGRAVATED BY PATHNET OR ANY
PATHNET  PARTY.  HAZARDOUS  SUBSTANCE  AS USED  HEREIN  SHALL MEAN  MATERIAL  OR
CONTAMINATION IN VIOLATION OF ANY APPLICABLE  ENVIRONMENTAL LAW, ORDER, DECISION
OR REGULATION.

            19.   Insurance.

                  (a) Pathnet,  prior to entering onto the Rail  Corridor  shall
            procure  the  following  insurance,  covering  all of the  work  and
            services to be performed hereunder by Pathnet, which shall remain in
            effect  for so long as such  party has any  personnel,  property  or
            facilities  on, or having a right to be on,  the Rail  Corridor,  at
            their sole cost:

                      (1)  Workers'   Compensation   and   Employers   Liability
                  Insurance  in an amount of at least  $1,000,000,  covering the
                  entire liability of Pathnet, as determined by the compensation
                  laws of the  State in  which  the  work is  performed,  but if
                  optional   under  State  law  the  insurance  must  cover  all
                  employees anyway,  or the federal workmen's  compensation laws
                  as applicable.  THE CERTIFICATE MUST CONTAIN A SPECIFIC WAIVER
                  OF THE  INSURANCE  COMPANY'S  SUBROGATION  RIGHTS  AGAINST THE
                  BURLINGTON NORTHERN AND SANTA FE RAILWAY COMPANY.

                      (2) Commercial  General  Liability  insurance and umbrella
                  liability  insurance  covering  liability,  including  but not
                  limited to Public Liability, Personal Injury, Property Damage,
                  and Contractual  Liability with combined  coverage of at least
                  $21,000,000 per occurrence and a general aggregate of at least
                  $21,000,000. Where explosion, collapse, or underground hazards
                  are involved,  the X, C and U exclusions  must be removed from
                  the policy;

                      (3)  Automobile  Liability  insurance,   including  bodily
                  injury  and  property  damage,   with  coverage  of  at  least
                  $1,000,000  combined  single limit or the equivalent  covering
                  any and all vehicles owned, used or hired by Pathnet;

                      (4) All Risk Property Damage insurance covering all of the
                  property  of Pathnet  on a  replacement  cost basis  including
                  property  in their  care,  custody or control  and first party
                  pollution  clean up. The first party  pollution clean up shall
                  include, at a minimum,  debris removal and cost of clean up on
                  a named perils




                                       21
<PAGE>

                  basis. Such insurance shall contain a waiver of subrogation in
                  favor The Burlington Northern and Santa Fe Railway Company.

                      (5) Pollution  Liability coverage in an amount of not less
                  than  $2,000,000 per occurrence and in the aggregate and shall
                  include  coverage for: (a) bodily injury,  sickness,  disease,
                  mental  anguish or shock  sustained  by any person,  including
                  death;  (b) property  damage  including  physical injury to or
                  destruction of tangible property  including the resulting loss
                  of use  thereof,  clean  up  costs,  and  the  loss  of use of
                  tangible  property  that has not been  physically  injured  or
                  destroyed;  and (c) defense  including loss adjustment  costs,
                  charges and expenses incurred in the investigation  adjustment
                  or defense of claims for such compensatory damages.

                      (6) If  Pathnet  requires  disposal  of any  hazardous  or
                  non-hazardous  materials off of their property,  Pathnet shall
                  utilize only a fully licensed and qualified disposal company.

                      (7) Railroad  Protective  Liability  insurance  naming The
                  Burlington  Northern and Santa Fe Railway Company as the Named
                  Insured with coverage of at least  $5,000,000  per  occurrence
                  and $10,000,000 in the aggregate.  Coverage shall be issued on
                  a standard  ISO for CG 00 35 01 96 and endorsed to include ISO
                  for CG 28 31 10 93  and  the  Limited  Seepage  and  Pollution
                  Endorsement.

            All insurance shall be placed with insurance  companies  licensed to
            do business in the States in which the work is to be performed,  and
            with a Best's Insurance Guide Rating of A- and Class VII, or better.

            If any work is to be performed within 50 feet of railroad  property,
            then the insurance must provide for coverage of incidents  occurring
            within fifty (50) feet of railroad  property,  and any  provision to
            the contrary  (including any limitation  regarding the definition of
            an insured  contract) in the insurance  policy must be  specifically
            deleted.

            To the extent  obtainable,  with respect to any incident on or along
            the Rail  Corridor,  in all cases except for Workers'  Compensation,
            the  certificate  must  specifically   state  that  "THE  BURLINGTON
            NORTHERN AND SANTA FE RAILWAY COMPANY IS AN ADDITIONAL INSURED." The
            Additional Insured endorsement shall, at a minimum, include coverage
            for the general supervision performed by BNSF.

            Any coverage afforded BNSF, the Certificate Holder, as an Additional
            Insured  shall  apply as  primary  and not  excess to any  insurance
            issued in the name of BNSF.

                  (b)  Before  commencing  any  work  hereunder,  Pathnet  shall
            furnish to BNSF,  Certificate of Insurance on the form prescribed by
            BNSF,  evidencing  the  issuance  to  Pathnet  of  the  policies  of
            insurance  providing  the types of insurance and limits of liability
            prescribed  above, and amending the  cancellation  clause to certify
            that BNSF shall be



                                       22
<PAGE>

            given not less than 30 days'  written  notice  prior to any material
            change,  substitution  or  cancellation  prior to normal  expiration
            dates.  Cancellation  or  expiration  of any  of  said  policies  of
            insurance  shall not preclude BNSF from recovery  thereunder for any
            liability arising under this Agreement.

            If any  coverage is  purchased  on a "claims  made"  basis,  Pathnet
            hereby  agrees to maintain  coverage in force for a minimum of three
            years  after   expiration,   cancellation  or  termination  of  this
            contract.  Pathnet shall provide evidence  annually of such coverage
            as required hereunder.

                  (c) Pathnet Parties shall procure and maintain insurance as
            outlined in Exhibit C-1.

                  (d) It is mutually  understood and agreed that the purchase of
            insurance  as  herein  provided  shall  not in  any  way  limit  the
            liability of the Pathnet or Pathnet  Parties to BNSF,  as herein set
            forth.

            20.   Liens.

                  (a) In the event that any BNSF property becomes subject to any
            mechanics'  or   materialmen's   lien,  or  other   construction  or
            supplier's  lien or encumbrance  chargeable to or through Pathnet or
            any of the Pathnet Parties as a result of a failure to pay.  Pathnet
            promptly, and in any event within ten days, shall cause such lien or
            encumbrance  to be  discharged  or released  of record (by  payment,
            posting of bond,  court  deposit or other  means),  without  cost to
            BNSF,  and shall  indemnify and hold harmless BNSF against all costs
            (including  reasonable  attorneys' fees) incurred in connection with
            such lien or encumbrance.  If any such lien or encumbrance is not so
            discharged  and  released,  BNSF may pay or secure  the  release  or
            discharge  thereof,  at the expense of Pathnet,  after first  giving
            five  days'  advance  notice  of its  intention  to do  so.  Pathnet
            acknowledges  that:  (i) all or  portions of the Rail  Corridor  are
            subject to the liens of one or more of BNSF's various mortgages;(ii)
            BNSF from time to time may place  other  liens or  mortgages  on the
            Rail  Corridor  and (iii) the  discharge or release of record of the
            current or future liens and mortgages  from the Rail Corridor is not
            required by this  Section,  provided  however,  that any such future
            liens or mortgages  shall be subject to Pathnet's  rights under this
            Lease.

                  (b) Nothing herein shall preclude  either Pathnet or BNSF from
            contesting of any lien or other encumbrance.

            21.   Liaison, Dispute Resolution and Arbitration.

                  (a) Not later than  thirty  days after the date of this Lease,
            BNSF and Pathnet each shall send a letter to the other,  pursuant to
            Section 28 hereof,  designating  individuals as points of contact at
            the following levels: corporate officer for overall decision-making,
            corporate  officer  for  dispute  resolution;   contact  person  for
            day-to-day  corporate  contact  and  liaison;   contact  person  for
            engineering and project management; contact person for



                                       23
<PAGE>

            field   construction;   contact  person  for  daily  operations  and
            maintenance;  and  contact  person  for  disaster  operations  on  a
            twenty-four  (24) hour basis.  The same individual may be designated
            for one or more  of the  foregoing  positions,  and  either  BNSF or
            Pathnet  may  change the name of any  designated  officer or contact
            person at any time by so informing the other in writing.

                  (b) It is the intent of the  parties  hereto  that any dispute
            which  may  arise  between  them  be  resolved  as  quickly  and  as
            informally  as possible.  When quick and informal  resolution of any
            dispute is not possible,  the issues in dispute shall be referred to
            the  two  corporate  officers   designated  for  dispute  resolution
            pursuant to this Section 21, who shall make a reasonable  attempt to
            settle the dispute.

                  (c) The parties  hereto  agree to waive any rights that either
            may  have to a  remedy  in a court  of law or in a court  of  equity
            arising out of this Lease,  and to submit any dispute  arising under
            the Lease,  and not settled  pursuant to Section  21(b)  hereof,  to
            binding   arbitration   in   accordance   with  this   Section   21.
            Notwithstanding the foregoing,  either party shall have the right to
            pursue  preliminary  equitable relief in connection with this Lease,
            or to pursue appropriate legal or equitable remedies in support of a
            decision rendered in arbitration.

                  (d)  The  parties  hereto  agree  that  one  of  the  remedies
            available to the  arbitrator(s)  for any substantial  breach of this
            Agreement  shall  be  specific  performance,  and  that an  award of
            specific performance by an arbitrator or arbitrators may be enforced
            in a court of law or equity.

                  (e) Any arbitration under this Agreement shall be conducted in
            accordance  with the  Commercial  Rules of the American  Arbitration
            Association  and  shall  be  conducted  by an  arbitrator,  and said
            arbitration  shall be conducted by a panel of three (3) arbitrators,
            one to be selected by BNSF,  one to be selected by Pathnet,  and one
            to be selected by the two designated arbitrators. Discovery shall be
            conducted in accordance with the Federal Rules of Civil Procedure

                  (f) All costs,  fees and expense charged by the  arbitrator(s)
            and other  neutral  third  parties  retained by mutual  agreement of
            Pathnet  and  BNSF in any  arbitration  conducted  pursuant  to this
            Section  21 shall be shared  equally  by  Pathnet  and BNSF,  unless
            apportioned otherwise by the arbitrators.

            22.   Representations and Warranties.

                  (a) By executing this Lease, BNSF represents and warrants the
            following facts:

                      (1) BNSF has the full  right and  authority  to enter into
                  and perform this Lease,  and by entering  into and  performing
                  this  Lease,  BNSF  is not in  violation  of  its  charter  or
                  by-laws,  or any Laws or  agreement by which it is bound or to
                  which it is subject; it being understood,  however,  that this
                  warranty does not



                                       24
<PAGE>

                  constitute  a  warranty,  express  or  implied,  that BNSF has
                  sufficient  rights in the Rail  Corridor to permit  Pathnet to
                  Construct and Operate the Fiber Optic Facilities; and

                           (2) The execution,  delivery and  performance of this
                  Lease  by BNSF  has  been  duly  authorized  by all  requisite
                  corporate  action,  that  the  signatory  for BNSF  hereto  is
                  authorized to sign this Lease and bind BNSF to its terms.

                  (b)      By executing this Lease, Pathnet represents and
                  warrants:

                           (1) Pathnet has the full right and authority to enter
                  into  and  perform  this  Lease  and  by  entering   into  and
                  performing  this  Lease,  Pathnet is not in  violation  of its
                  charter or by-laws,  or any Laws or  agreement  by which it is
                  bound or to which it is bound or to which it is subject;

                           (2) The execution,  delivery and  performance of this
                  Lease by Pathnet  has been duly  authorized  by all  requisite
                  corporate  action,  that the signatory  for Pathnet  hereto is
                  authorized  to sign this Lease and bind  Pathnet to its terms;
                  and

                           (3) Pathnet has the financial capability to fulfill
                  all of its obligations under this Lease.


            23. Limitation on Damages for Breach of this Lease. Damages that may
be  recovered  for  breach  of  this  Lease  shall  not  include  any  indirect,
consequential,  special or punitive  damages,  or lost  profits,  or the cost of
Pathnet  building  Fiber  Optic  Facilities  at a  different  location  than  it
originally planned.


            24.   Recordings, Taxes and Other Charges.

                  (a) Except as provided in this Section 24,  Pathnet shall pay:
            (i) all transfer taxes, documentary stamps, recording costs or fees,
            or any  similar  expense in  connection  with this Lease  and/or the
            recording or filing of a  Memorandum  of Lease for this Lease (which
            memorandum shall be in a form mutually agreeable between the parties
            and the  recording  of a  Memorandum  of Lease  shall  occur only by
            mutual  agreement  by the  parties);  and  (ii)  any and  all  taxes
            (including  but not limited to  transfer,  sales,  use, and property
            taxes),  levies,  excises,  assessments  and charges  (collectively,
            "Taxes"), including any penalties and/or interest thereon, levied or
            assessed  with  respect to the Fiber Optic  Facilities  or Pathnet's
            leasehold  interest.  Pathnet shall indemnify,  defend and hold BNSF
            harmless against the payment of any Taxes referenced in this Section
            24(a).

                  (b) BNSF may pay any Taxes,  plus any penalty and/or  interest
            thereon,  imposed upon BNSF for which Pathnet is obligated  pursuant
            to this Lease, if Pathnet



                                       25
<PAGE>



            does not pay  such  Taxes  when  due,  and  Pathnet  shall  promptly
            reimburse BNSF for any such payment it makes.

                  (c) In the case of amounts  described  in  Section  24(a)(ii),
            where Taxes with  respect to Fiber  Optic  Facilities  or  Pathnet's
            leasehold interest are not separately assessed, BNSF shall determine
            the amount of Taxes  attributable to the Fiber Optic  Facilities and
            Pathnet's leasehold interest by reference to information provided by
            the relevant taxing authority that  demonstrates or establishes that
            such  Taxes  are  attributable  to the  Fiber  Optic  Facilities  or
            Pathnet's  leasehold  interest.  If the information  provided by the
            relevant taxing authority demonstrates or establishes that Taxes are
            attributable  to the fiber optic value of a Rail Corridor in respect
            of which  Pathnet has been granted  rights  hereunder,  but does not
            demonstrate or establish the value  attributable  to the Fiber Optic
            Facilities   or  Pathnet's   leasehold   interest,   the  amount  so
            attributable  shall be  determined  by reference to a formula.  Such
            formula shall be consistently applied, shall reasonably allocate any
            Taxes among all of BNSF's rail corridors and fiber optic values with
            a further  allocation of the Taxes  attributable  to the fiber optic
            value  between  the  Fiber  Optic  Facilities,  Pathnet's  leasehold
            interest  and fiber optic value  attributable  to fiber optic rights
            granted by BNSF to others. In all cases, BNSF promptly shall provide
            to Pathnet information that establishes the manner in which any such
            Taxes  were  allocated  and the  basis  for  establishing  that such
            amounts are  attributable to the Fiber Optic Facilities or Pathnet's
            leasehold interest.  The parties shall resolve any dispute regarding
            the liability of Taxes hereunder  pursuant to the dispute resolution
            and arbitration procedures set forth in Section 21 of this Lease.

                  (d) Notwithstanding anything to the contrary contained in this
            Lease,  BNSF shall pay (i) any Taxes  attributable  to rights in the
            Fiber Optic  Facilities  and other assets and  services  provided to
            BNSF  pursuant  to  Section  8 of this  Lease;  and  (ii)  property,
            franchise or similar taxes that are  attributable to a Rail Corridor
            that are not attributable to the existence or use of the Fiber Optic
            Facilities or Pathnet's  leasehold  interest.  BNSF shall indemnify,
            defend and hold  Pathnet  harmless  against the payment of any Taxes
            referenced in this Section 24(d).  Pathnet may pay any Taxes imposed
            on Pathnet for which BNSF is obligated to indemnify Pathnet pursuant
            to this  Section  24(d),  if BNSF does not pay such amounts when due
            and BNSF shall  promptly  reimburse  Pathnet for any such payment it
            makes. The provision of Section 24(c) shall apply to amounts claimed
            by Pathnet, mutatis mutandis.

                  (e) Neither BNSF nor Pathnet will be responsible for the
            income or corporate franchise tax of the other.

                  (f) Both BNSF and Pathnet agree to reasonably  cooperate  with
            each other in the refund, rebate, reduction,  abatement,  mitigation
            or  contest  of any  Taxes  for which  either  is  obligated  to pay
            hereunder.

            25.   Independent Contractor Status; No Joint Venture. BNSF reserves
no control whatsoever over the employment, discharge or compensation of
Pathnet's employees or contractors. It is the intention of the parties hereto
that Pathnet shall be and remain an independent contractor, and nothing in this
Lease shall be construed as inconsistent with



                                       26
<PAGE>



Pathnet's independent  contractor status or creating or implying any partnership
or joint venture between Pathnet and BNSF.

            26.   Confidentiality.

                        (a) The  terms  of this  Lease  shall  be  confidential.
            Either party hereto may designate as confidential certain materials,
            maps,  documents and other  information  exchanged in fulfilling the
            terms and intent of this Lease. In addition,  in connection with the
            provision  of material  and/or  services  to BNSF by Pathnet,  or to
            BNSF,  BNSF and/or  Pathnet  may  discover  or  otherwise  come into
            contact with  specifications,  drawings,  computer programs,  and/or
            technical or business  information which BNSF or Pathnet has clearly
            identified as  confidential.  All construction  plans,  drawings and
            specifications,   including,   without   limitation,   all  proposed
            Construction  Drawings,  Final  Construction  drawings  and as-built
            plans and all  information  about the  location  of the Fiber  Optic
            Facilities, will constitute confidential information.

                        (b) Unless confidential information was previously known
            free of any  obligation to keep it  confidential,  or has been or is
            subsequently  made public, it shall be handled in confidence by BNSF
            and Pathnet and shall be  disclosed  only upon a need to know basis,
            such terms and conditions as may be mutually  agreed upon in writing
            by the parties hereto, or as required by law. BNSF and Pathnet shall
            advise those employees, agents, and contractors who may have contact
            with such  information,  of the obligation to keep such  information
            confidential,  and will use their best efforts to avoid unauthorized
            disclosure  of  such  information.  Notwithstanding  the  foregoing,
            either party may  disclose  confidential  information  to the extent
            required  by  applicable  law  or  regulations,  provided  that  the
            disclosing  party has  notified  the other  party of the  disclosing
            party's obligation to disclose, and provided that the non-disclosing
            party has had an opportunity to contest such disclosure.

                        (c) In the event of an actual or  threatened  disclosure
            of such  information  by  either  party  hereto  which  might  cause
            irreparable  harm to the  other  party  hereto,  it is  agreed  that
            monetary remedies available at law may be inadequate and, therefore,
            the  aggrieved  or  threatened  party  hereto  shall be  entitled to
            receive injunctive relief as an equitable remedy.

                        (d)   Notwithstanding    anything   else   herein,   the
            obligations  of the  parties  hereto  under  this  Section  26 shall
            survive termination of this Lease for a period of three years.

            27.   Assignment.

                        (a) This Lease  shall be  binding  upon and inure to the
            benefit  of  the  parties  hereto  and  their  respective  permitted
            successors or assignees.  Pathnet shall not assign any of the rights
            granted  to Pathnet  under this  Lease,  without  the prior  written
            consent of BNSF, which may be withheld or conditioned in BNSF's sole



                                       27
<PAGE>

            discretion.  Any  assignment  made in  violation  of this Section 27
            shall be null and void,  shall  confer  no rights  upon any party as
            against BNSF,  and shall give BNSF the right to terminate this Lease
            effective immediately,  or take any other lesser action with respect
            thereto.  The above  requirement  for consent shall not apply to (i)
            any  disposition of all or  substantially  all of Pathnet's stock or
            assets; (ii) any corporate merger,  consolidation or reorganization,
            whether  voluntary or  involuntary,  involving  Pathnet;  or (iii) a
            sublease or assignment of the Lease (in whole or in part) by Pathnet
            to a subsidiary,  affiliate,  or parent company,  controlled,  under
            common control with, or controlling,  either indirectly or directly,
            Pathnet,  but only where,  and to the extent,  such transaction does
            not violate the terms of the Contribution  Agreement;  provided that
            no assignment not consented to by BNSF shall relieve  Pathnet of any
            of its obligations or liabilities  under this Lease.  Nothing herein
            shall prohibit Pathnet (i) from involving contractors,  or strategic
            or  co-development  partners in  Construction  and  Operation of the
            Fiber Optic  Facilities,  on such terms as Pathnet may  determine in
            its sole  discretion,  provided all such activities are conducted in
            accordance  with the terms of this Lease,  and that Pathnet  remains
            fully liable for all obligations  hereunder;  and (ii) from granting
            liens or other security  interests in the Fiber Optic  Facilities or
            Pathnet's  rights under this Lease in connection  with  financing or
            investments made available to Pathnet.

                        (b)  Upon  request  by  Pathnet,   BNSF  shall   execute
            reasonable documentation to be provided by Pathnet acknowledging the
            rights of Pathnet's lender(s)  ("Lender") to obtain ownership of the
            Fiber Optic  Facilities if this Lease is still in effect and Pathnet
            is in material  default under the terms of Pathnet's loan to Lender,
            provided, however, that in such case Lender shall become an assignee
            to this Lease and shall become subject to all rights and obligations
            of Pathnet  under the terms of this Lease  (and  Pathnet  also shall
            remain subject to all  obligations of Pathnet under this Lease).  In
            order to obtain the rights  specified  in this  Lease,  Lender  must
            execute  an  amendment  to this  Lease  agreeing  to be bound by the
            terms,  conditions  and  obligations  contained  in this Lease.  The
            execution of such an  amendment by Lender shall not relieve  Pathnet
            from  any  obligations  or  liabilities  contained  in  this  Lease.
            Further,  before  Lender  or any other  assignee  or  transferee  of
            Pathnet's  interest in this  Agreement  may obtain any of  Pathnet's
            rights hereunder, such Lender, assignee, or transferee must cure any
            and all outstanding  defaults by Pathnet  hereunder.  In addition to
            the rights granted to Pathnet hereunder, Pathnet's Lender shall have
            the additional right to take possession,  sell,  assign or otherwise
            transfer the Fiber Optic Facilities, including the right to operate,
            or permit a  third-party  to operate,  the Fiber  Optic  Facilities,
            provided such operation shall be subject to all terms and conditions
            of this Lease.

            28. Notices. Unless otherwise provided herein, all notices and other
communications  required  by or  concerning  this Lease  shall be in writing and
shall be deemed to have been duly given when  delivered in person or on the next
business day when sent by a nationally  recognized  overnight courier, or on the
second succeeding business day when sent by registered or certified



                                       28
<PAGE>

United States Mail (postage prepaid,  return receipt  requested),  or, if postal
claim notice is given, on the date of its return marked  "unclaimed"  (provided,
however, that upon receipt of a returned notice marked "unclaimed",  the sending
party hereto shall make reasonable  effort to contact and notify the other party
hereto by telephone) and each respective party hereto at the following addresses
(or at such  other  address  for a party  hereto as shall be  specified  by like
notice):

            (1)   if to Pathnet:

                  Pathnet, Inc.
                  1015 31st St., N.W.
                  Washington, DC 20007
                  Attn: General Counsel

                  and to:

                  Pathnet, Inc.
                  1661 Gateway Boulevard
                  Richardson, TX 75080
                  Attn:  Senior Vice President, Engineering

            (2)   if to BNSF:

                  Assistant Vice President, Telecommunications
                  The Burlington Northern and Santa Fe Railway Company
                  2600 Lou Menk Drive
                  Forth Worth, Texas 76131

                  and to:

                  Vice President -Law
                  The Burlington Northern and Santa Fe Railway Company
                  2500 Lou Menk Drive, AOB-3
                  Fort Worth, Texas 76131-2830

            29.  Brokers and Agents.  BNSF and Pathnet  represent and warrant to
each other than neither has employed any broker,  agent or finder in  connection
with this Lease, and each indemnifies and agrees to hold harmless the other from
and against  any  commission  or fee  claimed by any broker,  agent or finder in
connection with this transaction.

            30. Force Majeure.  Except as may be elsewhere specifically provided
in this Lease,  any failure or delay in the performance by a party hereto of its
obligations  hereunder,  including,  without limitation,  Pathnet's  obligations
pursuant  to  Section  5 hereof,  shall  not be a breach  of this  Lease if such
failure or delay results from causes beyond that party's control,  including but
not  limited to acts of God,  governmental  action or  inaction  (whether in its
sovereign or contractual capacity), fire, flood, or other catastrophe,  national
emergency, insurrection, riot, and




                                       29
<PAGE>

war. The phrase  "beyond that party's  control" shall not include any failure to
reach  agreement with a party with whom Pathnet is  negotiating  pursuant to the
exclusive right to negotiate  provided in Section 4(b) of the Fiber Optic Access
Agreement.

            31.   Costs. Except as specifically provided in this Lease, each
party hereto shall be responsible for its own costs (including legal fees)
incurred in connection with the preparation, execution and performance of this
Lease.

            32. Severability.  If any provision of this Lease or the application
thereof,  shall be held invalid,  illegal or  unenforceable in whole or in part,
the remainder of this Lease and the  application  thereof shall not be affected,
and shall be enforceable to the fullest extent permitted by law, and the portion
hereof found to be invalid shall be enforced to the fullest extend  permitted by
law,  and, if  possible,  shall be reformed to carry out as much as possible the
intent of the parties as expressed herein.

            33. Amendment,  Waiver.  This Lease may be amended only by a written
instrument  executed by both parties hereto. No failure to exercise and no delay
in  exercising,  on the part of a party  hereto,  any right,  power or privilege
hereunder  shall operate as a waiver of any other provision of this Lease, or as
a waiver of that right,  power or privilege either before,  or after, the period
of waiver.

            34. Entire  Agreement.  This Lease and all Exhibits attached hereto,
together with the Fiber Optic Access  Agreement and the  Contribution  Agreement
between the parties  hereto  dated as of  __________  __, 1999,  constitute  the
entire  agreement  of the  parties  hereto with  respect to the subject  matters
hereof,  and  supersede  any  and all  prior  negotiations,  understandings  and
agreements, whether oral or written, with respect hereto.

            35.   Interpretation; Construction.

                  (a) Section  headings  contained  in this Lease are solely for
            purpose of reference  and shall not be construed  with the substance
            of the  Section  they  caption or in any way  affect the  meaning or
            interpretation of this Lease.

                  (b) Wherever  used in this Lease:  (i) any pronoun or pronouns
            shall be deemed to include  both the plural and the  singular and to
            cover all genders,  and (ii) "or" is used in the inclusive sense, in
            all cases where such meanings would be appropriate.

            36.   Legal Forum. This Lease shall be interpreted, construed and
enforced in accordance with the laws of the State of Texas.

            37.   Counterparts. This Lease may be executed in one or more
counterparts, each of which shall be deemed an original, but all of which
together shall constitute but one and the same instrument.


                                       30
<PAGE>



IN WITNESS WHEREOF, authorized representatives of BNSF and Pathnet have executed
this Lease as of the date first set forth herein.


PATHNET TELECOMMUNICATIONS, INC.             THE BURLINGTON NORTHERN AND
                                             SANTA FE RAILWAY COMPANY

By:                                          By:
        -----------------------------               ---------------------------
Name:                                        Name:
        -----------------------------               ---------------------------
Title:                                       Title:
        -----------------------------               ---------------------------




                                       31
<PAGE>
                                    EXHIBIT A





                        [to be agreed to by the parties]


<PAGE>
                                    EXHIBIT B




                           Map of BNSF Railway Network

                        [to be agreed to by the parties]


<PAGE>
                                    EXHIBIT C

                     Additional Construction Specifications
                     --------------------------------------

                        [to be agreed to by the parties]





                                      -13-
<PAGE>


                                    EXHIBIT B

                               EXCLUSIVE CORRIDORS

                                     Approx.
Corridor                            Route
Description                         Miles

[* * *]                            [* * *]

Total:                              4,052



                                      -14-
<PAGE>


                                    EXHIBIT C

                              RESTRICTED CORRIDORS

                                     Approx.
Corridor                            Route
Description                         Miles

[* * *]

Total:                             [* * *]
- - ------                              -----


                                      -16-


                                                                    Exhibit 10.5




                       MASTER RIGHT-OF-WAY LEASE AGREEMENT


                                     BETWEEN


                           COLONIAL PIPELINE COMPANY,
                             A DELAWARE CORPORATION


                                       AND


                        PATHNET TELECOMMUNICATIONS, INC.,
                             A DELAWARE CORPORATION



                         DATED: March 30, 2000







                                       -i-
<PAGE>
                                TABLE OF CONTENTS

ARTICLE I.    AGREEMENT TO LICENSE..........................................   2
     1.1  LEASEHOLD INTERESTS...............................................   2
     1.2  PERMITS; SEGMENT LEASES...........................................   2
     1.3  TERM..............................................................   4
     1.4  REVERSION TO COLONIAL.............................................   4
     1.5  USE...............................................................   5

ARTICLE II.   CONSIDERATION; RENEWAL PAYMENTS; OTHER FEES AND EXPENSES......   5
     2.1  CONSIDERATION.....................................................   5
     2.2  RENEWAL PAYMENT...................................................   5
     2.3  EXPENSES..........................................................   7
     2.4  PAYMENTS..........................................................   8
     2.5  DEFAULT INTEREST..................................................   8

ARTICLE III.  INSTALLATION OF TELECOMMUNICATIONS NETWORK....................   8
     3.1  PERFECTION; PRE-INSTALLATION DETERMINATIONS.......................   8
     3.2  REQUIREMENTS FOR INSTALLATION OF THE TELECOMMUNICATIONS
          NETWORK AND THE PTI WORK..........................................  10
     3.3  SERVICES AGREEMENT WITH COLONIAL..................................  12
     3.4  COMPLETION OF PTI WORK............................................  13
     3.5  UNAUTHORIZED WORK.................................................  13

ARTICLE IV.   OPERATION, MAINTENANCE AND REPAIR.............................  14
     4.1  PTI OPERATION, MAINTENANCE AND REPAIR.............................  14
     4.2  WARRANTIES........................................................  14
     4.3  SUBCONTRACTORS....................................................  14
     4.4  COLONIAL INSPECTIONS..............................................  14

ARTICLE V.    PIPELINE MAINTENANCE AND REPAIR...............................  15
     5.1  PIPELINE MAINTENANCE AND REPAIR...................................  15

ARTICLE VI.   INSURANCE.....................................................  15
     6.1  ACQUISITION OF INSURANCE POLICIES.................................  15
     6.2  TYPES OF REQUIRED INSURANCE FOR PTI...............................  15
     6.3  TYPES OF REQUIRED INSURANCE FOR COLONIAL..........................  16
     6.4  TERMS OF INSURANCE................................................  16
     6.5  FAILURE TO MAINTAIN INSURANCE.....................................  17
     6.6  BLANKET POLICIES; SELF-INSURANCE..................................  17

ARTICLE VII.  INTENTIONALLY OMITTED.........................................  18

ARTICLE VIII. CONDEMNATION..................................................  18
     8.1  MATERIAL TAKING...................................................  18
     8.2  CONTINUATION OF AGREEMENT.........................................  18
     8.3  APPORTIONMENT OF AWARD(S).........................................  18

ARTICLE IX.   REPRESENTATIONS, WARRANTIES AND COVENANTS OF PTI..............  19
     9.1  PTI'S REPRESENTATIONS, WARRANTIES AND COVENANTS...................  19

ARTICLE X.    REPRESENTATIONS, WARRANTIES AND COVENANTS OF COLONIAL.........  21
    10.1  COLONIAL'S REPRESENTATIONS, WARRANTIES AND COVENANTS..............  21

<PAGE>
ARTICLE XI.   INDEMNIFICATION; LIMITATION OF LIABILITY......................  22
    11.1  INDEMNIFICATION BY PTI............................................  22
    11.2  INDEMNIFICATION BY COLONIAL.......................................  22
    11.3  LIMITATION OF LIABILITY...........................................  23
    11.4  NO CONSEQUENTIAL OR SPECIAL DAMAGES...............................  23
    11.5  LEGAL PROCEEDINGS.................................................  23

ARTICLE XII.  DEFAULT.......................................................  24
    12.1  EVENT OF DEFAULT BY PTI...........................................  24
    12.2  EFFECT OF ARBITRATION.............................................  25
    12.3  REMEDIES OF COLONIAL..............................................  25
    12.4  EFFECT OF TERMINATION.............................................  25
    12.5  EVENT OF DEFAULT BY COLONIAL......................................  26
    12.6  NO WAIVERS........................................................  26
    12.7  NO REMEDY EXCLUSIVE...............................................  27
    12.8  FORCE MAJEURE.....................................................  27
    12.9  NO PERSONAL LIABILITY.............................................  27

ARTICLE XIII. VOLUNTARY REMOVAL OF TELECOMMUNICATIONS NETWORK...............  27
    13.1  REMOVAL OF TELECOMMUNICATIONS NETWORK BY PTI......................  27

ARTICLE XIV.  ARBITRATION...................................................  28
    14.1  ARBITRATION.......................................................  28
    14.2  SELECTION OF ARBITRATORS..........................................  28
    14.3  QUALIFIED ARBITRATORS.............................................  28
    14.4  ARBITRATION HEARING; DISCOVERY VENUE..............................  28
    14.5  DECISION..........................................................  29
    14.6  NON-BINDING IN CERTAIN EVENTS.....................................  29

ARTICLE XV.   ASSIGNMENT....................................................  29
    15.1  ASSIGNMENT BY PTI.................................................  29
    15.2  ASSIGNMENT BY COLONIAL............................................  30
    15.3  BINDING UPON SUCCESSORS AND ASSIGNS...............................  30

ARTICLE XVI.  CONFIDENTIALITY...............................................  30
    16.1  CONFIDENTIALITY...................................................  30

ARTICLE XVII. MISCELLANEOUS.................................................  30

    17.1   NOTICES..........................................................  30
    17.2   NO PARTNERSHIP...................................................  31
    17.3   TIME OF THE ESSENCE..............................................  31
    17.4   ENTIRE AGREEMENT.................................................  31
    17.5   CAPTIONS.........................................................  32
    17.6   MEANING OF TERMS.................................................  32
    17.7   AGREEMENT CONSTRUED AS A WHOLE...................................  32
    17.8   SEVERABILITY.....................................................  32
    17.9   SURVIVAL.........................................................  32
    17.10      AMENDMENT....................................................  32
    17.11      ATTORNEYS' FEES..............................................  32
    17.12      INTEREST.....................................................  32
    17.13      GOVERNING LAW................................................  33
    17.14      BUSINESS DAYS................................................  33
    17.15      REFERENCE DATE OF AGREEMENT..................................  33
    17.16      COUNTERPARTS.................................................  33
    17.17      EXHIBITS.....................................................  33

                                       -2-
<PAGE>
LIST OF EXHIBITS:


          Exhibit A           System Map
          Exhibit B           Form of Right-of-Way Permit
          Exhibit C           Form of Segment Lease
          Exhibit D           Currently Perfected Segments
          Exhibit E           General Colonial Construction Standards



                                       -3-
<PAGE>
LIST OF DEFINED TERMS:
- - - ----------------------

Agreement                                    Recitals
Applicable Laws                              Subsection 3.2(b)
Colonial                                     Recitals
Colonial Conduit                             Defined in the Fiber Optic
                                             Access and Purchase Agreement
Colonial  Construction  Standards  Subsection 3.2(c) Colonial Engineering Notice
Subsection  3.1(c) Colonial  Indemnified  Parties Section 11.1 Colonial  Parties
Subsection  10.1(f) Colonial Pipeline Recitals Colonial  Rights-of-Way  Recitals
Colonial System Recitals  Colonial  System Map Recitals  Conduit(s)  Section 1.5
Construction  Management Work Subsection  3.1(b)  Currently  Perfected  Segments
Subsection  2.3(b)  Default Rate Section  17.12  Designation  Notice  Subsection
1.2(a) Event of Default  Section 12.1 Fiber Optic Access and Purchase  Agreement
Subsection  1.1(a)  Governmental   Authorities   Subsection  2.3(a)  Impositions
Subsection  9.1(l)  Initial Term Section 1.3 Insurance  Requirements  Subsection
3.2(e)  Landowners   Subsection  2.3(a)  Leasehold  Interest  Subsection  1.1(a)
Material  Taking Section 8.1 Notice of Arbitration  Section 14.1  Perfection and
Construction Management Contractor Subsection 3.1(a) Perfection and Construction
Management  Work  Subsection  3.1(a)  Perfection   Expenses   Subsection  2.3(a)
Perfection   Process  Subsection  1.2(b)  Perfection  Rights  Subsection  1.2(b)
Permit(s)  Subsection  1.2(c) PTI Recitals PTI Indemnified  Parties Section 11.2
PTI Operation and Maintenance Services Section 4.1 PTI Parties Subsection 9.1(i)
PTI Stock Section 2.1 PTI Work Section 3.2 Related Facility(ies)  Recitals Regen
Facilities  Subsection  1.2(a) Renewal  Payment  Subsection  2.2(a) Renewal Term
Section 1.3 Required  Permits  Subsection  9.1(f)  Rerouted  Portion  Subsection
3.1(f) Reversion Date Subsection  1.4(a) Revised  Designation  Notice Subsection
1.2(c)  Right-of-Way  Agents Subsection 2.3(a) Route Engineering Work Subsection
3.1(b)
<PAGE>

Segment(s)                                   Subsection 1.2(a)
Segment Lease                                Subsection 1.2(c)
Services Agreement                           Section 3.3
Sub-Segment(s)                               Subsection 1.2(a)
Sub-Segment Lease                            Subsection 1.2(c)
Taking                                       Section 8.1
Telecommunications Network                   Section 1.5
Telecommunications Network Contractors       Subsection 3.2(f)
Term                                         Section 1.3
Trade Standards                              Subsection 3.2(e)
Undeployed Segments and Stations             Subsection 1.4(b)
<PAGE>


                       MASTER RIGHT-OF-WAY LEASE AGREEMENT


     THIS  MASTER  RIGHT-OF-WAY  LEASE  AGREEMENT  (the  "Agreement"),  made and
entered into as of this 30th_ day of March,  2000, 1999, by and between COLONIAL
PIPELINE   COMPANY,   a   Delaware   corporation    ("Colonial")   and   PATHNET
TELECOMMUNICATIONS, INC., a Delaware corporation ("PTI").

                              W I T N E S S E T H:

     WHEREAS,   Colonial   transports   refined  liquid  petroleum  products  in
interstate  commerce as a common carrier and maintains a system of pipelines and
related  facilities across fourteen states and the District of Columbia for such
purposes (the "Colonial System");

          WHEREAS, the Colonial System consists of (a) pipelines  (collectively,
the  "Colonial   Pipeline")   located  on  certain   interests  in  land  (e.g.,
rights-of-way,  easements,  licenses,  permits, leases, etc. [collectively,  the
"Colonial  Rights-of-Way"]),  and (b) injection stations, booster stations, tank
farms, delivery locations and terminals (collectively, the "Related Facilities")
located on certain other tracts of land owned in fee or leased by Colonial,  all
of which Colonial Rights-of-Way and Related Facilities are located approximately
as shown on that certain system map of the Colonial  System,  attached hereto as
Exhibit A and made a part hereof (the "Colonial System Map");

     WHEREAS,  PTI desires the right to use designated portions of the currently
existing   Colonial   System  for  the  purpose  of  installing   and  operating
communications facilities,  including, but not limited to, fiber optic conduits,
regeneration stations and related machinery and equipment for the operation of a
telecommunications network;

     WHEREAS,  Colonial  desires  to lease  to PTI  designated  portions  of the
Colonial Rights-of-Way and Related Facilities to use for the aforesaid purposes,
subject to applicable title  restrictions and  encumbrances,  and upon the terms
and conditions hereinafter set forth; and

     WHEREAS,  Colonial and PTI desire to enter into this  Agreement in order to
set forth the terms and conditions of the foregoing.

     NOW,  THEREFORE,  for and in  consideration  of the  premises  hereof,  the
covenants contained herein, the sum of Ten and No/100 Dollars ($10.00) and other
good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, Colonial and PTI hereby agree as follows:



<PAGE>
                                    ARTICLE I
                               AGREEMENT TO LEASE

     1.1  Leasehold Interests.

          (a) Subject to all of the terms and conditions of this Agreement,  and
that certain Fiber Optic Access and Purchase  Agreement entered into by Colonial
and PTI  contemporaneously  herewith  (the  "Fiber  Optic  Access  and  Purchase
Agreement"),  Colonial  agrees to lease to PTI the right to use  portions of the
currently  existing Colonial  Rights-of-Way and Related  Facilities for the uses
and purposes  described  herein (each such portion leased to PTI pursuant to the
terms  hereof  being a  "Leasehold  Interest").  The  Leasehold  Interests to be
granted hereby include the non-exclusive use of a strip of land five (5) feet on
either  side  of  the   centerline   of  the   telecommunication   conduits  and
appurtenances  to  be  installed   hereunder  within  the  designated   Colonial
Rights-of-Way,  or such  larger  area  as may be  reasonably  necessary  for the
construction  and operation of the  "Telecommunications  Network" (as defined in
Section 1.5  hereof),  as approved by Colonial in  accordance  with  Article III
hereof; provided that, if necessary along a particular "Segment" (as hereinafter
defined),   PTI  may  request  that  Colonial  attempt  to  acquire   additional
right-of-way  at  PTI's  expense,  to  be  included  as  part  of  the  Colonial
Rights-of-Way for the purposes hereof.

          (b) In the event that Colonial  expands the Colonial System beyond its
current  boundaries as of the date hereof, and should PTI desire to utilize such
expansion,  then  Colonial  and PTI will  negotiate  in good faith to extend the
Leasehold  Interests to be granted hereunder to include the additional  Colonial
Rights-of-Way  applicable  to such  extensions  of the  Colonial  System  and to
determine the compensation to be received by Colonial therefor.

          (c) PTI's rights in the Colonial  Rights-of-Way and Related Facilities
hereunder  consist  solely of Leasehold  Interests  subject to the terms of this
Agreement and PTI does not acquire  hereby any other or additional  rights in or
to any portion of the  Colonial  Rights-of-Way  or any Related  Facilities.  PTI
further  acknowledges that Colonial hereby reserves such access and other rights
as are necessary to enable  Colonial to reasonably  commercialize  the "Colonial
Conduit"  (as  defined  in the  Fiber  Optic  Access  and  Purchase  Agreement),
including, without limitation, full rights of access with respect to any portion
of the Colonial Rights-of-Way otherwise leased to PTI in order to allow Colonial
(or its  assignee(s) or licensee(s) to maintain,  operate,  repair,  replace and
upgrade the Colonial Conduit as necessary or appropriate.

     1.2  Permits; Segment Leases.

          (a) From  time to time,  PTI shall  designate,  by  written  notice to
Colonial  (each, a  "Designation  Notice"),  specified  segments of the Colonial
System with respect to which PTI desires to acquire  Leasehold  Interests.  Each
such Designation Notice shall identify or describe, as applicable: (i) a segment
or  segments  of the  Colonial  Rights-of-Way  within the  Colonial  System (the
"Segment(s)"),  using Colonial's  location number references as beginning points
and ending points, and shall describe the approximate distance of the applicable
Segment(s);  (ii)  one or more of the  Related  Facilities  along  the  Colonial
System; (iii) the types of



                                       -2-
<PAGE>

facilities PTI intends to install (i.e., regeneration facilities ("Regen
Facilities"), junctions, terminals, etc.); and (iv) the number of conduits PTI
plans to install within the Segment(s).

          (b)  Subject  to  Section  3.3 below,  within  thirty  (30) days after
receipt of a Designation Notice, Colonial shall prepare,  execute and deliver to
PTI  a  segment  lease  for  the  applicable  Segment  or  Related  Facility  in
substantially  the form set forth on Exhibit B  attached  hereto and made a part
hereof (each,  a "Segment  Lease").  Upon the execution by Colonial of a Segment
Lease,  Colonial  also shall  notify PTI of the exact  number of  Conduits  that
Colonial determines,  in its reasonable  discretion,  may be installed along the
applicable  Segment in  question  without  material  interference  with the use,
operation and maintenance of the Colonial Pipeline in the applicable  portion of
the  Colonial  Rights-of-Way  and/or  without  compromising  the  safety  of the
Colonial  Pipeline.  If Colonial does not own the applicable  Segment or Related
Facility  in fee,  each such  Segment  Lease  shall have  attached as an exhibit
thereto a description of the  applicable  leases,  easements,  licenses or other
similar  agreements  (together  with all amendments or  modifications  thereto),
pursuant to which  Colonial  has the right to use such  portion of the  Colonial
Rights-of-Way or Related Facility. Colonial also shall provide or otherwise make
available to PTI such documents,  agreements and  information  pertaining to the
Colonial System, the Colonial Rights-of-Way and or Related Facilities as PTI may
reasonably request.  Upon execution and delivery of a completed Segment Lease by
Colonial and PTI, the terms of such Segment Lease will be incorporated into this
Agreement and become subject to its terms and conditions,  subject,  however, to
modification in accordance with the terms of applicable  "Permits" (as described
in  Subsection  1.2(c) below issued  hereunder).  A Segment  Lease shall signify
Colonial's  authority for PTI to proceed with the  modification of such existing
leases, easements, licenses and other agreements to which Colonial is a party in
order to obtain the rights (the "Perfection Rights") for PTI to install, operate
and maintain the Telecommunications Network and the Colonial Conduit through the
designated Segments of the Colonial Rights-of-Way (collectively, the "Perfection
Process").  Each such Segment Lease shall confirm,  however,  that PTI shall not
have the right to  commence  any "PTI Work" (as  defined in Section  3.2 hereof)
until  compliance by PTI with the applicable  provisions of Sections 3.1 and 3.2
hereof.

          (c) PTI shall  notify  Colonial  in  writing  upon  completion  of the
Perfection  Process with respect to a  particular  Segment or Related  Facility,
such Perfection  Process to be performed in accordance with the terms of Section
3.1 below. After completion of the pre-installation  determinations described in
Subsections  3.1(b)-(d) hereof,  Colonial shall prepare,  execute and deliver to
PTI a Permit for the applicable  Segment Lease,  in  substantially  the form set
forth on Exhibit C attached  hereto and made a part hereof  (each,  a "Permit").
PTI's right to use the Leasehold Interests described herein for the installation
and operation of the  "Telecommunications  Network" (as described in Section 1.5
hereof) shall become  effective  with respect to a particular  Segment  and/or a
particular  Related  Facility  only  upon  the  execution  and  delivery  of the
applicable Permit for such Segment or Related Facility;  provided, however, that
PTI may request  that a Segment  Lease be divided  into  sub-segments  for "mini
construction  spreads" (hereinafter defined as "Sub-Segment(s)") of no less than
fifteen (15) miles in length.  In such event, PTI shall establish the applicable
Sub-Segment by delivering to Colonial a modification  to a previously  delivered
Designation Notice (a "Revised Designation Notice").



                                       -3-
<PAGE>

Receipt of same by Colonial shall  authorize  Colonial,  upon  completion of the
Perfection  Process  with  respect  to such  Sub-Segment,  to  deliver  to PTI a
"Sub-Segment Lease" for the applicable  Sub-Segment that conforms to the Revised
Designation Notice.

          (d) The books and records of Colonial shall be prima facie evidence of
the location and legal  description  of any  applicable  portion of the Colonial
Rights-of-Way  or Related  Facility  in any  dispute  between  Colonial  and PTI
relating to this Agreement.

     1.3  Term.  The  initial  term of this  Agreement  shall be for a period of
thirty (30) years from and after the date hereof (the "Initial Term").  Provided
that PTI is not in  default  hereunder,  PTI  shall  have the right to renew the
Initial Term for one (1) ten (10) year period (the  "Renewal  Term"),  by giving
written  notice to Colonial of the  exercise of such right not later than twelve
(12)  months  prior to the  expiration  of the  Initial  Term and by  paying  to
Colonial,  upon  the  termination  of the  Initial  Term,  the  renewal  payment
described  in Article II hereof.  PTI's use of its rights  hereunder  during the
Renewal  Term  shall be on the same terms and  conditions  as  provided  in this
Agreement.  Whenever  the word  "Term"  is used in this  Agreement,  it shall be
deemed to mean the Initial Term together with, if applicable, the Renewal Term.

     1.4  Reversion to Colonial.

          (a) In the event that, as of the fifth (5th)  anniversary  of the date
of  this  Agreement  (the   "Reversion   Date"),   PTI  has  not  installed  its
Telecommunications  Network  with  respect to at least  2,200  miles of Colonial
Rights-of-Way  throughout the Colonial System,  then PTI shall have the right to
issue a  Designation  Notice,  within ten (10) days after said  Reversion  Date,
designating  additional  Segments of the  Colonial  Rights-of-Way  (and  Related
Facilities)  which, when added to the Segments for which Permits previously have
been  granted to PTI,  will equal 2,200 miles or less.  In such event,  upon the
execution  and  delivery  of  appropriate  Segment  Leases  for such  additional
designated portions of the Colonial  Rights-of-Way and Related Facilities,  then
PTI  shall  have the  right to use  such  Segments  and  Related  Facilities  in
accordance with the terms of this Agreement.

          (b) All  other  portions  of the  Colonial  Rights-of-Way  or  Related
Facilities  (i) in  which  PTI has not  then  installed  its  Telecommunications
Network;  and (ii)  that are not then the  subject  of  Designation  Notices  as
described in Subsection 1.4(a) above will revert to Colonial as of the thirtieth
(30th) day after the Reversion Date. If any such reversion occurs, (aa) PTI will
have  no  further   rights  with  respect  to  such  portions  of  the  Colonial
Rights-of-Way or Related Facilities (collectively,  the "Undeployed Segments and
Stations")  and (bb) the  Undeployed  Segments  and  Stations  will no longer be
subject to the terms and  conditions of this Agreement or the Fiber Optic Access
and Purchase Agreement.  Additionally, at the end of the second (2nd) year after
the  Reversion  Date,  any  Segment  of the  Colonial  Rights-of-Way  or Related
Facilities that is the subject of Designation Notices as described in Subsection
1.4(a) above will be released  from the  exclusivity  restrictions  set forth in
Section 3 of the Fiber Optic Access and Purchase  Agreement  from and after such
date unless (x) PTI has then  installed its  Telecommunications  Network  within
such Segment,  or (y) PTI is then proceeding with such  installation  process in
good faith and with diligent efforts. Upon the release of any such



                                       -4-
<PAGE>

Segments or Related  Facilities from said exclusivity  restrictions as described
in the immediately  preceding sentence,  PTI shall continue to have the right to
install its Telecommunications  Network within the applicable Segments and/or at
such Related  Facilities;  provided that PTI's rights under this  Agreement with
respect  to such  Segments  or Related  Facilities  then shall be subject to the
rights  of other  parties,  if any,  claiming  by,  through  or under  Colonial;
provided,  however,  that although Colonial acknowledges that it shall not grant
"exclusive  rights" to any such other parties,  PTI acknowledges  that there are
space  limitations  within the Colonial  Rights-of-Way  and that any granting by
Colonial  of rights to other  parties  for the last  remaining  available  space
within a Segment  or  portion  thereof  shall not  constitute  the  granting  of
"exclusive rights" for the purposes hereof.

     1.5 Use. PTI  acknowledges and agrees that the property to be leased to PTI
hereunder may be used only for the purpose of installing,  constructing,  using,
operating, maintaining, repairing and replacing a fiber optic telecommunications
network  consisting of not more than ten (10)  telecommunications  conduits (the
"Conduit(s)")  within a given Segment (together with appurtenant and necessarily
related Regen  Facilities and other  telecommunications  machinery and equipment
(collectively, the "Telecommunications Network")), the exact number and location
of Conduits to be located  within a given Segment to be determined in accordance
with the terms and conditions of Subsection 1.2(b) and Article III hereof.

                                   ARTICLE II
             CONSIDERATION; RENEWAL PAYMENT; OTHER FEES AND EXPENSES

     2.1 Consideration.  The parties hereto  acknowledge that,  pursuant to that
certain  Contribution  Agreement,  by and between  Colonial and PTI, dated as of
November 2,  1999,  Colonial  and  PTI  have agreed that,  in  consideration  of
Colonial's  permission to allow PTI to use  designated  portions of the Colonial
Rights-of-Way as described  herein for the Initial Term,  Colonial has received,
simultaneously  with the  execution  of this  Agreement  ONE MILLION SIX HUNDRED
EIGHTY  FOUR  THOUSAND  ONE  HUNDRED  FIFTEEN  (1,684,115) shares  of  Series  D
convertible preferred stock of PTI (collectively, the "PTI Stock").

     2.2  Renewal Payment.

           (a) In the event that PTI  exercises  its right to extend the Term of
this Agreement for the Renewal Term, PTI shall pay to Colonial, on or before the
expiration  of the Initial  Term, a renewal  payment  equal to the  then-current
"fair  market  value" of the  Leasehold  Interests  to be  granted  herein  (the
"Renewal Payment").

          (b) Within  the thirty  (30) day  period  commencing  upon  Colonial's
receipt of PTI's  written  notice of renewal as  described in Section 1.3 above,
Colonial and PTI shall  negotiate in good faith in order to determine a mutually
satisfactory  amount for the Renewal Payment.  If Colonial and PTI fail to agree
upon the amount of such Renewal Payment within such thirty (30) day period, then
the renewal payment will be determined by the following third party  independent
appraisal procedure:



                                       -5-
<PAGE>

               (i) The parties shall  attempt to agree upon a single  appraiser;
     however,  if the  parties  are  unable to agree  upon an  appraiser  within
     fifteen (15) days after the  expiration of the thirty (30) day  negotiation
     period described in the first sentence of this Subsection 2.2(b), then each
     party shall appoint an appraiser  within five (5) days after the expiration
     of the initial fifteen (15) day period. Upon the appointment of the two (2)
     appraisers,  said  appraisers,  within  five (5)  Business  Days  after the
     appointment of the second appraiser,  and before exchanging views as to the
     question  at issue,  shall  appoint in writing a third  appraiser  and give
     written notice of such  appointment to the parties.  If any appraiser shall
     not be  appointed  or agreed  upon within the time  herein  provided,  then
     either of the parties may apply to the United States District Court for the
     Northern  District of Georgia for such  appointment.  The appraisers  shall
     have  thirty  (30)  days  from  the  date of the  appointment  of the  last
     appraiser to provide a determination under this Section 2.2.

               (ii) Any appraiser  appointed  hereunder shall be a member of the
     MAI and shall have no less than five (5) years  experience in the appraisal
     of comparable assets or rights.

               (iii)  In  the  event  any   appraiser   appointed  as  aforesaid
     thereafter shall die or become unable or unwilling to act, such appraiser's
     successor  shall be appointed  in the same manner  provided in this Section
     2.2 for the  appointment  of the  appraiser so dying or becoming  unable or
     unwilling to act.

               (iv) The question to be  determined by the  appraisers  shall be:
     "What is the then fair  market  value of the  renewal of the rights  leased
     under the Segment Leases?"

               (v) For the  purposes of this  Section 2.2, the term "fair market
     value" shall mean the highest  price for cash that the rights  leased under
     the Segment  Leases would bring in a competitive  and open market under all
     conditions  requisite to a fair transaction with the lessor and lessee each
     acting prudently and knowledgeably, and subtracting therefrom the costs and
     expenses of such a transaction,  including, without limitation, commissions
     and legal fees and assuming further that (aa) such price is not affected by
     undue stimulus;  (bb) lessor and lessee are typically motivated;  (cc) both
     parties are  well-informed  or well-advised  and are each acting in what it
     considers  its own best  interest;  (dd) a  reasonable  time is allowed for
     exposure  on  the  open  market;  (ee)  payment  is  made  in  cash  or its
     equivalent; and (ff) to the extent applicable,  that the Telecommunications
     Facilities  to be installed and operated on the Colonial  Rights-of-Way  in
     connection with such renewal already have been installed.

               (vi)  As  applicable,   the  determination  of  (aa)  the  single
     agreed-upon appraiser,  or (bb) the concurring  determination of any two of
     the three appraisers shall be binding upon Colonial and PTI; provided that,
     in  the  event  no  two  of  the  appraisers   shall  render  a  concurring
     determination,  then  the  average  of the two  appraised  values  that are
     closest in amount shall be binding upon Colonial and PTI.



                                       -6-
<PAGE>

               (vii) The fees and expenses of the appraiser(s)  shall be divided
     equally between the two parties to the transaction.

               (viii) Wherever the  determination  of "fair market value" of the
     rights licensed  hereunder is at issue,  the procedure  established in this
     Section 2.2 shall be binding upon Colonial and PTI and shall be a condition
     precedent  to the  filing  of any  action  at law or in equity by any party
     hereto.

          (c) PTI will not be  entitled  to any  return  or refund of all or any
     portion of either the PTI Stock or any Renewal  Payment in the event of any
     termination  of this Agreement "for cause" by Colonial or in the event that
     PTI  elects  not to use or is  prohibited  from  using any  portion  of the
     Colonial  Rights-of-Way  or Related  Facilities for the purposes  described
     herein,  including,  without  limitation,  any  portions  of  the  Colonial
     Rights-of-Way  that become  Undeployed  Segments and  Stations  pursuant to
     Section 1.4 hereof.

     2.3  Expenses.

          (a) Except to the extent that  Colonial is obligated for same pursuant
to the "Services  Agreement" described in Section 3.3 hereof, PTI will be solely
responsible  for all costs and expenses of any nature  whatsoever  in connection
with:

               (i) all aspects of the  Perfection  Process  (including,  without
     limitation,  any payments to the fee owners,  ground  lessors or lessees of
     applicable  land  (collectively,   the  "Landowners")  or  to  contractors,
     right-of-way agents and other brokers,  agents,  consultants or other third
     parties (collectively, "Right-of-Way Agents") for the purposes of assisting
     in  such  Perfection  Process  (all  of the  foregoing  being  collectively
     referred to as the "Perfection Expenses");

               (ii) the construction, installation, use, operation, maintenance,
     repair, replacement and/or removal of the Telecommunications Network or any
     portion thereof in accordance with the requirements of Articles III, IV and
     IX hereof; and

               (iii)  any  construction,  grading  or other  work of any  nature
     whatsoever  required  by  any  state,   county,   municipal  and/or  tribal
     governments, and/or the appropriate agencies, offices, departments, boards,
     bureaus,  authorities or  commissions  thereof with  jurisdiction  over the
     matter in question (collectively,  the "Governmental Authorities") in order
     to allow  the use of  applicable  portions  of the  Colonial  Rights-of-Way
     and/or  Related  Facilities  for the  deployment of the  Telecommunications
     Network;

          (b) PTI  acknowledges  that,  as of the date hereof,  Colonial has not
completed the Perfection Process with respect to the Colonial Rights-of-Way, but
has  substantially  completed  the  Perfection  Process  with respect to certain
segments of the Colonial  Rights-of-Way  described on Exhibit D attached  hereto
and made a part hereof (collectively,  the "Currently Perfected Segments"). Upon
the  issuance  of a  Designation  Notice  by PTI  with  respect  to a  Currently
Perfected Segment, PTI will reimburse Colonial for all actual and reasonable



                                       -7-
<PAGE>

Perfection Expenses for such Currently Perfected Segments, such reimbursement to
be made within thirty (30) days of receipt of an invoice from  Colonial,  and to
be  calculated in accordance  with the methods and  procedures  described in the
Services Agreement.

     2.4 Payments.  All rentals,  license fees,  Renewal Payments,  expenses and
other payments or reimbursements  to be paid by PTI to Colonial  hereunder shall
be payable in lawful money of the United States of America.  All payments  shall
be made by PTI to Colonial without notice or demand,  deduction or offset at the
address provided in Section 17.1 hereof.

     2.5 Default Interest. In the event that any payment or reimbursement is not
paid  within  ten (10) days after  written  notice of such  nonpayment  is given
pursuant to Section  12.1  hereof,  then  interest  shall  accrue on such unpaid
payment or reimbursement at the "Default Rate" described in Section 17.12 hereof
from the date such payment or reimbursement was due until finally paid.

                                   ARTICLE III
                   INSTALLATION OF TELECOMMUNICATIONS NETWORK

     3.1  Perfection; Pre-Installation Determinations.

          (a) The parties  hereto  agree that PTI shall be obligated to complete
the Perfection Process for the right to install the  Telecommunications  Network
and the  Colonial  Conduit  within  any  discrete  portion  of a Segment  before
commencing  any "PTI Work" (as  defined  in  Section  3.2  hereof)  within  such
portion, unless PTI receives Colonial's express written permission not to do so,
which  permission  will be based,  among other matters,  upon PTI's agreement to
indemnify  Colonial for any liabilities  described in Subsection 11.1(c) hereof.
PTI will use good faith  efforts to obtain  Perfection  Rights in a manner  that
provides   authority   generally  to  install  and  operate   telecommunications
facilities  along the Colonial  Rights-of-Way,  such good faith efforts to be as
follows: Prior to and during the Perfection Process,  Colonial and PTI will work
together to create and modify Perfection Process  methodologies that balance (i)
Colonial's  interest  in  maximizing  "broad  form"  perfection  and (ii)  PTI's
interest  in  controlling  perfection  costs  and  minimizing  delays.  If it is
determined that there is an incremental cost difference  between (aa) broad form
perfection and (bb) the minimum Perfection Rights that are necessary in order to
install  PTI's  Telecommunications  Network and the Colonial  Conduit  along the
applicable  property,  then  Colonial  shall  have the  option  of  paying  such
difference.

          (b) Within  thirty (30) days after PTI's  designation  of a Segment or
Related Facility pursuant to Section 1.2 hereof,  Colonial,  at its own cost and
expense,  (along with any other  potential  contractor that PTI may consider for
such work) shall prepare a proposal for  completion of the  Perfection  Process,
route  engineering  that  may be  necessary  prior  to the  installation  of the
Telecommunications  Network  ("Route  Engineering  Work") and the performance of
construction   management  services  in  connection  with  installation  of  the
Telecommunications  Network  ("Construction  Management  Work";  the  Perfection
Process,  Route  Engineering  Work and  Construction  Management  Work sometimes
collectively  referred to as "Perfection  and  Construction  Management  Work").
Colonial acknowledges that PTI shall



                                       -8-
<PAGE>

have no obligation to select Colonial for the performance of such Perfection and
Construction  Management Work; provided,  however, that in the event Colonial is
not  selected to perform  such  Perfection  and  Construction  Management  Work,
Colonial  nevertheless  shall have the right to approve the contractor that will
perform such Perfection and  Construction  Management Work (the  "Perfection and
Construction  Management  Contractor")  in  accordance  with the  provisions  of
Subsection  3.2(f)  hereof.  Colonial  also  shall  have the  right  to  review,
supervise and approve,  jointly with PTI, the performance of all such Perfection
and Construction  Management Work and to receive periodic  progress reports from
the Perfection and Construction  Management  Contractor (if not Colonial) during
the course of performance of the Perfection and Construction Management Work.

          (c) PTI shall  notify  Colonial  in  writing  upon  completion  of the
Perfection  Process as to a Segment of the Colonial  Rights-of-Way or a discrete
portion of such  Segment.  Within thirty (30) days after receipt of such notice,
Colonial shall notify PTI in writing (the "Colonial Engineering Notice") of:

               (i) the exact  location  in which PTI may  install  the  Conduits
     within such Segment of the Colonial Rights-of-Way or the applicable portion
     thereof (such location to be, whenever possible, running along a centerline
     located not less than five (5) feet from an outer right-of-way  boundary of
     the Segment in question,  but no closer than ten (10) feet from the closest
     pipeline within the Segment in question); and

               (ii)  any  special   conditions   regarding   any   construction,
     installation,  use or operation that must be conducted  within such Segment
     or the  applicable  portion  thereof or Related  Facility and not otherwise
     generally  described  herein  (including,  without  limitation,  the timing
     deadlines  for  the  completion  of  the  applicable   work  on  any  given
     Landowner's   property)  that  are  necessary,   in  Colonial's  reasonable
     determination,  to prevent  or limit  material  interference  with the use,
     operation and maintenance of Colonial's  Pipeline in the applicable portion
     of the Colonial Rights-of-Way, to prevent any compromising of the safety of
     the Colonial  Pipeline and/or,  in the case of construction  schedules,  to
     maintain good relations with Landowners on the Colonial Rights-of-Way.

Colonial will attempt to develop general  guidelines for such  determinations to
the  extent  reasonably  feasible  in order  to  provide  PTI  with  appropriate
flexibility so long as development is consistent with such guidelines.  If PTI's
concerns  cannot  be  resolved  without   re-routing  or  obtaining   additional
Perfection Rights, the cost of same shall be borne by PTI.

     (d) If PTI objects to any of the  determinations  made by Colonial pursuant
to  Subsection  3.1(c)  above or to the  determination  of the  exact  number of
Conduits to be allowed, as described in the second sentence of Subsection 1.2(b)
above,  then,  upon PTI's written  request to Colonial  within fifteen (15) days
after  receipt of the  Colonial  Engineering  Notice (or other  notice  provided
pursuant to Subsection  1.2(b), as applicable),  representatives of each party's
appropriate  departments  will meet to discuss the  concerns of both parties and
possible resolutions.  If the parties are not able to resolve the dispute within
ten (10) days after the first



                                       -9-
<PAGE>

meeting,  then either  party may elect to escalate  the issue to the senior vice
president level and/or any comparable  executive-level officer of each party for
good  faith  discussions  to  resolve  the  matter.  It is the  intent  of  such
discussions  to find a resolution  that protects the safety and integrity of the
Colonial System,  while minimizing to the extent reasonably possible the harm to
PTI that may result from a limitation on the permitted  number of Conduits to be
developed or other restrictions imposed by Colonial. If, after such discussions,
the  parties are unable to reach  agreement,  then the  decision  of  Colonial's
applicable executive-level officer shall be final as to the matter in question.

          (e) As referenced in Subsection 1.2(b),  Permits shall be prepared and
executed   upon   completion   of  the   Perfection   Process   and  the   other
pre-installation determinations described in Subsections 3.1(b)-(d) above. Among
other  matters,  said Permits shall have the effect of modifying the  applicable
Segment  Leases  by  limiting  the  areas  leased  to PTI  within  the  Colonial
Rights-of-Way to the areas specifically described in the Permits.

          (f) In circumstances in which PTI elects not to install its facilities
within  a  portion  of the  Colonial  Rights-of-Way  and  instead  installs  its
facilities  on land that is adjacent to or within five (5) miles of such portion
(the "Rerouted  Portion"),  PTI agrees (i) to comply with the Perfection Process
and other  requirements  of this Section 3.1 with respect to all parcels of land
which are within the Rerouted  Portion and which are not owned by, or subject to
leases,  easements  or other  right-of-way  grants  in favor  of,  utilities  or
government  authorities   (including,   without  limitation,   railroad,   power
companies,  pipeline  companies,  and  federal,  state or local  governments  or
agencies) and (ii) to provide contemporaneous written notice to Colonial of such
reroute, identifying the Rerouted Portion in reasonable detail.

     3.2 Requirements for Installation of the Telecommunications Network and the
PTI Work. All work to be performed by or on behalf of PTI in connection with the
development,  construction,  installation,  operation, maintenance and repair of
PTI's  Telecommunications  Network  within any  applicable  Segments of Colonial
Rights-of-Way  or at any Related  Facility  (collectively,  "PTI Work") shall be
subject in all events to the following terms and conditions, the satisfaction of
which shall be at the sole cost and expense of PTI:

          (a)  The   plans  and   specifications   for  all  PTI  Work  and  any
     modifications  thereto  must be approved in advance by Colonial  and no PTI
     Work may commence until receipt of such  approval,  which approval will not
     be unreasonably  withheld. PTI shall deliver to Colonial, for its approval,
     complete detailed  engineering and design plans and  specifications for the
     performance of the PTI Work on the applicable  Segment or at the applicable
     Related Facility,  including,  without limitation, all construction methods
     and staging areas to be used in connection  with the same.  Colonial  shall
     approve, or propose  modifications,  within thirty (30) days of its receipt
     of such plans and  specifications or revised plans and  specifications,  as
     applicable.  In the event of any dispute between Colonial and PTI regarding
     such approval, the matter shall be referred to the Head Engineer of each of
     PTI and Colonial for resolution.



                                      -10-
<PAGE>

          (b) All PTI Work shall be performed in a good and workmanlike  manner,
     free and clear of all mechanics' and  materialmen's  liens and encumbrances
     related  thereto and in accordance  with all applicable  present and future
     statutes, regulations, rules, ordinances, codes, licenses, permits, orders,
     concessions,  franchises  and  similar  items  of or  from  all  applicable
     Governmental  Authorities with jurisdiction over the applicable portions of
     the Colonial  Rights-of-Way  and/or the Related  Facilities and the use and
     operation thereof (including,  without limitation, any rules or regulations
     issued by the Department of Transportation  or the Occupational  Safety and
     Health  Administration,  and all applicable  judicial,  administrative  and
     regulatory  decrees,  judgments and orders relating thereto  (collectively,
     "Applicable Laws").

          (c) All PTI Work shall be  performed  in  accordance  with the general
     construction  requirements and  specifications for work within the Colonial
     Rights-of-Way  or at the applicable  Related  Facility  attached  hereto as
     Exhibit E and made a part hereof (the "Colonial Construction Standards").

          (d) All PTI Work with respect to the initial development, construction
     and  installation of any portion of the  Telecommunications  Network within
     any  applicable  Segments  of  Colonial  Rights-of-Way  or at  any  Related
     Facilities  must be  performed  in  accordance  with all general or special
     conditions or requirements noted on the applicable Permits.

          (e) All PTI Work shall be performed in  accordance  with all standards
     or  requirements,  whether  now or  hereafter  in force,  issued by (i) any
     insurer  or  insurance  carrier,  board of fire  underwriters  or any other
     company,  bureau,  organization  or entity  performing  the same or similar
     functions  applicable  to  the  Telecommunications  Network,  the  Colonial
     Pipeline  and/or  the  Related  Facilities  (collectively,  the  "Insurance
     Requirements");  and (ii) the American Society of Mechanical Engineers, the
     American Petroleum Institute,  the National Electrical Safety Code, and the
     National  Association  of  Corrosion  Engineers  (collectively,  the "Trade
     Standards").

          (f) All contractors,  materialmen, mechanics and any other parties who
     may  perform  work in, on or about  the  Colonial  Rights-of-Way  or at the
     applicable  Related  Facilities  for the benefit of the  Telecommunications
     Network pursuant to agreements with PTI (collectively,  "Telecommunications
     Network  Contractors")  (i) must be approved in advance by  Colonial;  (ii)
     must submit for review and  approval by Colonial  satisfactory  evidence of
     contractor's liability and worker's compensation insurance;  and (iii) must
     acknowledge receipt and review of the Colonial  Construction  Standards and
     the potential  liability  arising out of any breach of the integrity of the
     adjacent  Colonial  Pipeline.  Colonial  and PTI will  establish  a list of
     pre-approved  contractors  and  suppliers,  and a mechanism  to provide for
     approval  by  Colonial  of  parties   performing   work  on  the   Colonial
     Rights-of-Way  or at the applicable  Related Facility in a manner that does
     not materially delay or interfere with work to be performed on the Colonial
     Rights-of-Way or at the applicable Related Facility.



                                      -11-
<PAGE>

          (g) During  all phases of the  construction  and  installation  of any
     portion of the Telecommunications Network within any applicable Segments of
     Colonial  Rights-of-Way  or at the applicable  Related  Facility,  Colonial
     shall assign one or more inspectors to work with each PTI construction crew
     in order to provide  construction  inspection services with respect to such
     PTI Work. PTI shall  reimburse  Colonial for the costs of such  inspections
     within  thirty  (30) days of  receipt  of an invoice  from  Colonial,  such
     reimbursement  payment to be calculated in accordance  with the methods and
     procedures  described in the Services  Agreement.  In connection  with such
     inspections,  PTI will make available to Colonial and its inspectors,  upon
     Colonial's reasonable request, the PTI personnel and all Telecommunications
     Network contractors and other agents working for or on behalf of PTI in the
     performance of the PTI Work.

          (h) All PTI Work must be done in such a manner  as will not  interfere
     with in any way  whatsoever  the use,  maintenance,  operation,  repair and
     replacement of the adjacent Colonial Pipeline.

          (i) PTI shall provide monthly engineering  progress reports and weekly
     construction  progress reports advising Colonial of the status and progress
     of all PTI Work and any issues of concern arising therefrom.

          (j) PTI shall perform a complete  locations  survey of the  applicable
     Segment or Related Facility in question,  including the staking and marking
     of the existing Colonial  Pipeline and the route of the  Telecommunications
     Network and any  applicable  Regen  Facilities  that are a part  hereof) in
     accordance   with  the  Colonial   Construction   Standards   and  standard
     telecommunications industry practices.

          (k) PTI shall prepare field alignment maps showing the route along the
     Segment in question as well as the property ownership, terrain description,
     materials and other pertinent information.

          (l) PTI shall prepare railroad, highway, waterway or wetlands crossing
     permit  drawings  sufficient  for approval by the  applicable  Governmental
     Authorities or railroads and obtain any and all other permits necessary for
     such crossings.

          (m) All PTI Work shall be  performed  at such a standard  of care that
     equals  the  Colonial  Construction  Standards  or that which is normal and
     customary in the telecommunications industry, whichever standard is higher.

          (n) In the  event  that PTI fails to comply  with  Colonial  safety or
     operational  regulations,  and such  failure  interferes  or is  likely  to
     interfere  with  Colonial's  operations,  Colonial  may  require  that  PTI
     immediately  suspend all affected  operations  on the  applicable  Segment.
     Promptly  after such  suspension,  and if such  suspension  materially  and
     adversely affects PTI's  Telecommunications  network,  within two (2) hours
     after  such  suspension,  Colonial  and PTI each  will  make  available  by
     telephone  a  representative  of upper  management,  as  designated  on the
     escalation list agreed to by the parties, to discuss



                                      -12-
<PAGE>

     prompt  resolution of the  situation.  If the parties are unable to resolve
     the issue by  telephone,  then  Colonial and PTI will escalate the issue to
     the  next  higher  individual  on the  escalation  list  for a face to face
     meeting at a mutually  agreeable  location within twenty-four (24) hours of
     the  suspension.  The parties  thereafter  will  negotiate in good faith to
     resolve the issue and prevent the  occurrence of similar  situations in the
     future.

     3.3 Services Agreement with Colonial.  Notwithstanding the other provisions
of this Article III or of  Subsection  1.2(b) or Section 4.1 below,  the parties
hereto  acknowledge  that Colonial shall not be obligated to execute and deliver
to PTI any Segment Lease hereunder prior to the execution by Colonial and PTI of
that certain Master Services Agreement (the "Services Agreement"). Such Services
Agreement shall set forth,  among other matters,  the designation by Colonial of
specified  employees  to work  within  PTI's  organization,  Perfection  Process
methodologies,  the scope of work for  Colonial's  performance,  if any,  of any
Perfection and Construction  Management Work and inspections with respect to the
Colonial  Rights-of-Way  and  Related  Facilities  (or  portions  thereof) to be
deployed by PTI hereunder and the  compensation  to be paid to Colonial for such
services;  however,  PTI shall continue to have sole  responsibility for all PTI
Work  hereunder for any  applicable  Segment to the extent that Colonial has not
expressly assumed such responsibility  within such Segment pursuant to the terms
of the Services Agreement.

     3.4  Completion of PTI Work.  Upon the  completion of any PTI Work within a
designated Segment or Related Facility, PTI shall do the following:

          (a) Perform an as-built  survey of the Segment or Related  Facility in
     question and cause any applicable  system maps and drawings of Colonial for
     such  particular  Segment or Related  Facility to be revised and updated as
     appropriate  so that each of PTI and Colonial have at least one full set of
     revised and updated maps and drawings.

          (b)  Deliver to Colonial  complete  technical  specifications  for the
     Telecommunications  Network,  including all Regen  Facilities and any other
     machinery or equipment  placed  within the Colonial  Rights-of-Way  or at a
     Related Facility, as the case may be.

          (c)  Deliver  to  Colonial  equipment  manuals  for  the  proper  use,
     operation,  maintenance and repair of any portion of the Telecommunications
     Network,  including  all  Regen  Facilities  and  any  other  machinery  or
     equipment that is to be or may be maintained by Colonial.

          (d)   Deliver  to   Colonial   a   certificate   from  PTI's   general
     contractor(s),  certifying that all PTI Work within the applicable  Segment
     or Related  Facility has been  completed in  accordance  with the plans and
     specifications  previously approved by Colonial, that all such PTI Work has
     been paid for, that all  Telecommunications  Network  Contractors have been
     paid and that no party has any lien  rights or claims of lien with  respect
     to any  portion  of the  completed  PTI Work for such  Segment  or  Related
     Facility.



                                      -13-
<PAGE>

          (e) Obtain any certificates,  permits,  licenses or approvals required
     to be  obtained  by  any  applicable  Governmental  Authorities  under  any
     Applicable  Laws or  Trade  Standards  upon  completion  of the PTI Work in
     question  including,  without  limitation,  such of the foregoing as may be
     required for the operation of the Telecommunications Network.

     3.5  Unauthorized  Work.  In the event that PTI performs any PTI Work along
any  portion of the  Colonial  Rights-of-Way  or at a Related  Facility  without
obtaining Colonial's approval therefor or completing the Perfection Process with
respect to the applicable  Segment,  or if Colonial determines that any such PTI
Work or portion thereof is prohibited by applicable Governmental  Authorities or
Applicable Laws, then Colonial may require PTI to remove the PTI Work (including
any  Conduits,   Regen  Facilities  or  other  improvements  installed  therein)
immediately and to restore the subject property to its original condition,  wear
and tear and casualty  excepted,  provided  that  Colonial will not require such
removal for so long as PTI is in good faith  contesting or otherwise  attempting
to  resolve  such  prohibitions.  In the  event  that PTI  fails to do so,  then
Colonial  may  perform  such  removal  and  restoration  at PTI's  sole cost and
expense, without any liability to Colonial.

                                   ARTICLE IV
                        OPERATION, MAINTENANCE AND REPAIR

     4.1  PTI  Operation,   Maintenance  and  Repair.  Upon  completion  of  any
applicable portion of the Telecommunications Network, and during the Term hereof
PTI shall be responsible, at its sole expense, for all costs and expenses of the
operation of the Telecommunications  Network (except only as expressly described
in the  Fiber  Optic  Access  and  Purchase  Agreement),  and all  ordinary  and
extraordinary  maintenance  and  repair  (including,   without  limitation,  the
performance of continual  monitoring and routine or special  inspections) of all
aspects of the Telecommunications  Network (including,  without limitation,  any
fibers,  conduits,  Regen  Facilities or junctions,  line  amplifiers  and other
equipment  and  machinery  that  are a part  thereof)  (collectively,  the  "PTI
Operation and Maintenance Services"), all pursuant to and in accordance with the
provisions  of Section 3.2 and in compliance  with the plans and  specifications
for the  Telecommunications  Network approved by Colonial as provided in Section
3.2.  PTI  shall  have  no  responsibility  for,  or  authorization  to  perform
maintenance  or repairs on any  portion of the  Colonial  Pipeline  or any other
Colonial  equipment or machinery located along the Colonial  Rights-of-Way or at
the Related Facilities.

     4.2   Warranties.   In  the  event  any   maintenance  or  repairs  to  the
Telecommunications  Network  are  required  as a  result  of any  breach  of any
warranty made by any of PTI's  manufacturers,  contractors or vendors, PTI shall
pursue any  remedies it may have  against  such  manufacturers,  contractors  or
vendors,  and PTI shall  reimburse  Colonial for any expenses  that Colonial has
incurred as a result of any such breach of warranty.



                                      -14-
<PAGE>

     4.3 Subcontractors.  PTI may subcontract its obligations under this Article
IV; however,  in any such event,  PTI shall require the  subcontractors  to meet
operations,  maintenance and repair standards for the Telecommunications Network
that are at least as high as those  standards  set forth in Section  3.2 of this
Agreement. The use of any such subcontractor shall not relieve PTI of any of its
obligations hereunder.

     4.4  Colonial  Inspections  . In addition to the matters  described  in the
Services Agreement,  after installation of the Telecommunications Network within
any Segment,  Colonial shall have the right, but not the obligation,  to inspect
all  or  any  portion  of the  PTI  Work,  including,  without  limitation,  the
Telecommunications  Network,  as Colonial may deem appropriate,  such additional
inspections  to  be  performed  at  Colonial's   expense.   Notwithstanding  the
foregoing,   in  the  event  that  Colonial  considers   special,   non-periodic
inspections  of the PTI Work to be  reasonably  necessary  because of  perceived
interference  with or threats to the use and operation of the adjacent  Colonial
Pipeline and/or the safety and integrity of such Colonial Pipeline, PTI will pay
Colonial  for the  cost of such  special  inspections  in  accordance  with  the
provisions of the Services Agreement.

                                    ARTICLE V
                         PIPELINE MAINTENANCE AND REPAIR

     5.1 Pipeline  Maintenance  and Repair.  Colonial will perform,  at its sole
expense,  all emergency,  routine and necessary  maintenance,  replacements  and
repair on the Colonial  Pipeline and other Colonial  equipment located along the
Colonial  Rights-of-Way and at the Related Facilities,  excluding,  however, any
portion of the Telecommunications Network located at any Related Facility.

                                   ARTICLE VI
                                    INSURANCE

     6.1 Acquisition of Insurance Policies. During the entire Term, Colonial and
PTI shall  procure and maintain the  insurance  described in this Article VI (or
its then available equivalent). Policy limits shall be reviewed annually and may
be adjusted if prudent,  considering levels of inflation,  risk of loss, premium
expenses and other relevant factors.

     6.2  Types of Required Insurance for PTI. PTI shall procure and maintain
the following:


          (a) commercial  general public  liability  insurance  covering loss or
     damage  resulting from accidents or occurrences on, about or arising out of
     or in  connection  with the  Telecommunications  Network (or the  attempted
     installation  thereof)  and/or  the  Segments  that  may be  leased  to PTI
     hereunder,  with personal injury, death and property damage combined single
     limit liability of not less than One Million Dollars  ($1,000,000.00)]  for
     each accident or occurrence and in the aggregate. Coverage under


                                      -15-
<PAGE>

     such  policies  shall be broad  form and  shall  include,  but shall not be
     limited to, operations,  contractual,  owner's and contractor's protective,
     products and completed operations,  environmental pollution, and the use of
     all owned, non-owned and hired vehicles;

          (b)  umbrella liability insurance in an amount not less than
     Thirty-Five Million Dollars ($35,000,000.00);

          (c) "all risk" or "special"  physical  damage  insurance  covering all
     risks of physical loss or damage to all portions of the  Telecommunications
     Network installed by or on behalf of PTI, with liability limits of not less
     than one hundred  percent (100%) of the then full  replacement  cost of all
     such property;

          (d)  contractor's   liability  and  builder's  risk  insurance  during
     performance of all PTI Work and during any subsequent maintenance,  repair,
     modification, or replacement thereof;

          (e)  worker's compensation and employer's liability insurance as
     required by Applicable Laws; and

          (f) such  other  insurance  in  amounts  from time to time  reasonably
     required by Colonial  against other  insurable  risks if, at the time, such
     coverage is  available  at  commercially  reasonable  rates and is commonly
     obtained with respect to similar improvements or systems.

     6.3  Types of Required Insurance for Colonial. Colonial shall procure and
maintain the following:

          (a) commercial  general public  liability  insurance  covering loss or
     damage  resulting  from accidents or occurrences on or about or arising out
     of or in connection  with the Colonial  Pipeline and/or the portions of the
     Colonial  Rights-of-Way  not leased to PTI hereunder with personal  injury,
     death and property  damage combined single limit liability of not less than
     One  Million  Dollars  ($1,000,000.00)  for  each  occurrence  and  in  the
     aggregate.  Coverage  under  such  policies  shall be broad  form and shall
     include, but shall not be limited to, operations,  contractual, owner's and
     contractor's protective,  products and completed operations,  environmental
     pollution, and the use of all owned, non-owned and hired vehicles;

          (b)  umbrella liability insurance in an amount not less than
     Thirty-Five Million Dollars ($35,000,000.00); and

          (c)  worker's compensation and employer's liability insurance as
     required by Applicable Laws.

     6.4  Terms of Insurance. The policies required under Sections 6.2 and 6.3
shall name Colonial or PTI, as applicable, as additional insured(s). Each party
shall provide to the other



                                      -16-
<PAGE>

party  certificates of insurance and copies of policies obtained by the insuring
party  hereunder  promptly upon the request of the other party.  All policies of
insurance  obtained by a party  pursuant to Sections 6.2 or 6.3, as  applicable,
also:

          (a) shall be written by  responsible  insurance  companies  reasonably
     acceptable to the other party having a Best's rating of "A-VIII" or better;

          (b) shall be  written  as  primary  policies  with  respect  to losses
     arising out of the acts or omissions of the named insured not  contributing
     with and not in excess of any coverage that the other party may carry;

          (c) shall contain an endorsement providing that the amount of coverage
     will not be reduced  with  respect to any party  except  after  thirty (30)
     days' prior written  notice from the  insurance  company to the other party
     and  such  coverage  may  not  be  cancelled  with  respect  to  any  party
     (including,  without  limitation,  for non-payment of premium) except after
     thirty (30) days' prior written  notice from the  insurance  company to the
     other party;

          (d) shall contain, if obtainable, a statement that the insurance shall
     not be invalidated  should any insured waive in writing prior to a loss any
     or all  right of  recovery  against  any  party  for loss  accruing  to the
     property described in the insurance policy; and

          (e) shall contain, if obtainable,  a provision that no act or omission
     of the party  procuring such insurance shall affect or limit the obligation
     of the insurance carrier to pay the amount of any loss sustained.

     6.5 Failure to Maintain  Insurance.  If either party at any time during the
Term fails to procure or maintain any insurance required hereunder or to pay the
premiums  therefor,  the other party shall have the right to procure the same on
behalf of the defaulting party and to pay any and all premiums thereon.  In such
event,  any amounts paid by such other party in connection  with the acquisition
of such insurance shall be immediately  due and payable by the defaulting  party
and interest on the amount so paid shall accrue at the Default Rate.

     6.6  Blanket Policies; Self-Insurance.

          (a) Any insurance  required to be carried  pursuant to this Article VI
may be carried under a "blanket" policy or policies  covering other  liabilities
and locations of Colonial or PTI, as applicable;  provided,  however,  that such
policy or policies:  (i) shall apply to the  property  required to be insured by
this Article VI and in an amount not less than the amount of insurance  required
to be carried by Colonial or PTI with respect  thereto;  and (ii) shall  provide
that no payment of insurance  proceeds under any such policy with respect to any
location  other than the  Telecommunications  Network  (with  respect to PTI) or
other than the Colonial Rights-of-Way and/or Related Facilities (with respect to
Colonial),  shall reduce the amount of insurance  available  with respect to the
Telecommunications Network or to the Colonial Rights-of-Way



                                      -17-
<PAGE>

and/or  Related  Facilities,  as  applicable,  to an amount  below the limits of
liability required to be maintained herein.

          (b) The  insurance  requirements  described  in this Article VI may be
satisfied  with respect to the initial One Million  Dollars  ($1,000,000.00)  of
liability by any plan of self-insurance from time to time maintained by Colonial
or PTI on condition  that: (i) the party so  self-insuring  has and maintains an
aggregate net worth of One Million Dollars ($1,000,000.00) or more; and (ii) any
party so self-insuring shall furnish to the other party, upon request,  evidence
of the  adequacy  of its net  worth.  The  annual  report of such  party that is
audited  by an  independent  certified  public  accountant  shall be  sufficient
evidence  of its net worth.  If either  Colonial  or PTI  elects to  self-insure
pursuant to the provisions set forth herein,  or thereafter  elects to terminate
such self-insurance program, it shall give at least ten (10) days' prior written
notice thereof to the other party.

                                   ARTICLE VII
                              INTENTIONALLY OMITTED

                                  ARTICLE VIII
                                  CONDEMNATION

     8.1 Material  Taking.  If (a) all or any portion of a Segment (or a Related
Facility,  as applicable)  shall be acquired for any public or quasi-public  use
through taking by  condemnation,  eminent domain or any similar  proceeding,  or
purchase in lieu thereof (each, a "Taking"); and (b) PTI and Colonial reasonably
determine,  as applicable,  that (i) the Segment or portion thereof  cannot,  at
reasonable cost,  continue to be operated for both the existing Pipeline and the
operation of the  Telecommunications  Network,  or (ii) the Related  Facility or
portion thereof cannot, at reasonable cost, continue to be operated for both the
existing  Colonial  Related Facility and the operation of PTI's Regen Facilities
thereon (in either such case, a "Material Taking"),  then any Permits or Segment
Leases  applicable  to the  portion  of the  Colonial  Rights-of-Way  or Related
Facility  so taken  shall  cease  and  terminate  as of the date the  condemning
authority  takes title or  possession,  whichever  first  occurs and only to the
extent that such Permits or Segment Leases apply to the property so taken.

     8.2 Continuation of Agreement.  If there is a Taking that is not a Material
Taking and this  Agreement is not  partially  terminated  as provided in Section
8.1,  this  Agreement  shall  remain in full force and  effect and any  award(s)
received thereby shall be apportioned pursuant to Section 8.3 hereof.

     8.3  Apportionment of Award(s) .

          (a) If there is a Taking,  whether  a  Material  Taking or  otherwise,
Colonial  and PTI shall be entitled to receive and retain such  separate  awards
and  portions  of lump  sum  awards  as may be  allocated  to  their  respective
interests in any condemnation proceedings, or as may be otherwise agreed, taking
into consideration the nature of the respective interests of Colonial and PTI in
the subject property, as subject to this Agreement.



                                      -18-
<PAGE>

          (b) If the condemning  authority does not make separate awards and the
parties  are  unable  to agree as to  amounts  that are to be  allocated  to the
respective  interests  of  Colonial  and PTI,  the award shall be  allocated  as
follows:  (i) first,  if the Taking is not a Material Taking and Colonial and/or
PTI  elect(s) to restore the property and  improvements  so taken,  then to such
party(ies) in the amount(s) equal to the costs and expenses incurred by Colonial
and/or PTI in performing any such restoration;  (ii) second, to Colonial and PTI
in  proportional  amounts  reflecting  the  respective  unamortized  cost of any
portion of the Colonial Pipeline,  Related Facilities and/or  Telecommunications
Network  so taken;  and (iii)  the  balance,  if any,  shall be  distributed  in
proportion to the amounts of the award allocated to Colonial and PTI pursuant to
clause (ii) above.

                                   ARTICLE IX
                REPRESENTATIONS, WARRANTIES AND COVENANTS OF PTI

     9.1  PTI's Representations, Warranties and Covenants. PTI represents,
warrants and covenants that:

          (a)  PTI is a corporation existing and in good standing under the laws
of the State of Delaware,

          (b) PTI has the power and  authority to enter into this  Agreement and
to consummate the  transactions  provided for herein.  This Agreement and all of
the documents executed and delivered by PTI constitute the legal, valid, binding
and enforceable obligations of PTI and there are no claims or defenses, personal
or otherwise,  or offsets  whatsoever to the  enforceability or validity of this
Agreement.

          (c) The execution,  delivery and performance by PTI of its obligations
under  this  Agreement  will not  conflict  with or  result  in a breach  of any
Applicable Law by which PTI is bound or by any of the provisions of any contract
to  which  PTI is a party  or by  which  PTI is  bound,  or  PTI's  articles  of
incorporation or by-laws.  There is no action, suit, proceeding or investigation
pending or, to PTI's knowledge,  threatened,  before any agency,  court or other
Governmental  Authority that relates to PTI, this Agreement or the  installation
of the  Telecommunications  Network  contemplated  herein that would  materially
interfere with PTI's ability to perform its rights and obligations hereunder.

          (d)  PTI  has  not  made a  general  assignment  for  the  benefit  of
creditors,  filed any voluntary petition of bankruptcy or suffered the filing of
an involuntary petition by its creditors, suffered the appointment of a receiver
to take possession of substantially  all of its assets,  suffered the attachment
or other  judicial  seizure of  substantially  all of its assets,  admitted  its
inability  to pay its debts as they come  due,  or made an offer of  settlement,
extension or compromise to its creditors generally.



                                      -19-
<PAGE>

          (e)  PTI  warrants  and  covenants  that  the  installation,  use  and
operation of the Telecommunications Network (and any related maintenance, repair
or replacement thereof) shall comply with all Applicable Laws.

          (f) PTI shall  obtain (and cause to remain  effective  for the Term of
this  Agreement) all rights,  licenses,  authorizations,  permits,  consents and
other   agreements   or   approvals   required   by   Governmental   Authorities
(collectively,  the "Required Permits") necessary for the installation,  use and
operation of the Telecommunications Network (including,  without limitation, all
Conduits, Regen Facilities, cables, fibers or other physical plant facilities or
machinery or equipment related thereto). Colonial shall have the right to review
and approve all documents evidencing or reflecting the Required Permits.

          (g) PTI will comply with all requirements, conditions and stipulations
set forth in any of the Required Permits and in any easements, licenses or other
agreements   evidencing   the  rights  of  Colonial  in  and  to  the   Colonial
Rights-of-Way that have been disclosed to PTI.

          (h) PTI shall notify  promptly  Colonial of any matters  pertaining to
any   damage  or   threatened   damage  to  or  loss  of  any   portion  of  the
Telecommunications  Network,  the Colonial Pipeline or any Related Facilities of
which it becomes aware.

          (i) PTI shall respect  Colonial's  right to use the Colonial  Pipeline
and the Related Facilities.  PTI shall not use the Telecommunications Network in
a manner that  interferes  in any way with or  adversely  affects  the  Colonial
Pipeline or any Related Facility,  and PTI shall take all reasonable precautions
against, and shall assume liability for, subject to the terms herein, any damage
to the Colonial  Pipeline or any Related  Facility caused by PTI or any of PTI's
employees,   officers,   directors,   contractors,   agents,   licensees  and/or
concessionaires, as applicable (collectively, the "PTI Parties").

          (j) PTI agrees to cooperate  with and support  Colonial in  connection
with the compliance with any government  requirements issued by any Governmental
Authority applicable to the Telecommunications Network.

          (k) PTI shall pay when due all charges  for public or private  utility
services  to or for any  portion of the  Telecommunications  Network  during the
Term, including, without limitation, all charges for electricity,  water, sewer,
storm water drainage, gas, telephone and/or garbage collection.

          (l) PTI shall pay when due the  following,  as they  arise  during the
Term   (collectively,   the   "Impositions"):   (i)  all  real  property  taxes,
assessments,  fees  or  payments  in  lieu  thereof  due  with  respect  to  the
Telecommunications  Network, or any portion thereof, or any personal property or
intangibles  located  in or  used  in  connection  with  the  Telecommunications
Network;  (ii) any and all sales,  use,  income,  gross  receipts or other taxes
assessed on the basis of revenues  received or accrued by PTI arising out of its
use of the Telecommunications  Network; and (iii) all other taxes,  assessments,
excises, levies, license fees, permit fees, franchise fees,



                                      -20-
<PAGE>

inspection  fees  and  similar  charges  assessed,  levied,  or  imposed  on any
occupancy, use or possession of the Telecommunications  Network, including those
based upon the physical  location of the  Telecommunications  Network and/or the
construction  thereof in, on or along any public  road,  highways,  waterways or
rights-of-way,  or any part thereof.  Notwithstanding  the foregoing,  PTI shall
have no  responsibility  for (x) any tax based in whole or in part on Colonial's
income from this Agreement or the Fiber Optic Access and Purchase Agreement; (y)
any taxes that are the responsibility of Colonial pursuant to Subsection 7(g) of
the Fiber Optic Access and Purchase  Agreement;  or (z) any other real  property
taxes or assessments with respect to the Colonial Rights-of-Way other than those
set out in clause (i) of this Subsection  9.1(l) above. PTI shall have the right
to make a claim,  and Colonial shall cooperate  reasonably with PTI, for refund,
rebate, reduction or abatement of any such Impositions.

                                    ARTICLE X
              REPRESENTATIONS, WARRANTIES AND COVENANTS OF COLONIAL

     10.1 Colonial's Representations, Warranties and Covenants. Colonial
represents, warrants and covenants that:

          (a)  Colonial is a corporation existing and in good standing under the
laws of the State of Delaware,

          (b) Colonial has the power and authority to enter into this  Agreement
and to consummate the transactions  provided for herein.  This Agreement and all
of the documents executed and delivered by Colonial constitute the legal, valid,
binding  and  enforceable  obligations  of  Colonial  and there are no claims or
defenses,  personal or otherwise, or offsets whatsoever to the enforceability or
validity of this Agreement.

          (c)  The  execution,  delivery  and  performance  by  Colonial  of its
obligations under this Agreement will not conflict with or result in a breach of
any Applicable Law by which Colonial is bound or by any of the provisions of any
contract  to which  Colonial  is a party  or by  which  Colonial  is  bound,  or
Colonial's  articles  of  incorporation  or by-laws.  There is no action,  suit,
proceeding or  investigation  pending or, to Colonial's  knowledge,  threatened,
before  any  agency,  court or other  Governmental  Authority  that  relates  to
Colonial, this Agreement, the Colonial Pipeline or any Related Facility.

          (d)  Colonial  has not made a general  assignment  for the  benefit of
creditors,  filed any voluntary petition of bankruptcy or suffered the filing of
an involuntary petition by its creditors, suffered the appointment of a receiver
to take possession of substantially  all of its assets,  suffered the attachment
or other  judicial  seizure of  substantially  all of its assets,  admitted  its
inability  to pay its debts as they come  due,  or made an offer of  settlement,
extension or compromise to its creditors generally.

          (e) Colonial  shall promptly  notify PTI of any matters  pertaining to
any damage or threatened damage to or loss of any part of the Telecommunications
Network of which Colonial becomes aware.



                                      -21-
<PAGE>

          (f) Colonial  shall respect PTI's right to use the  Telecommunications
Network.  Colonial  shall take all  reasonable  precautions  against,  and shall
assume  liability  for,  subject  to  the  terms  herein,   any  damage  to  the
Telecommunications  Network  caused by Colonial or any of Colonial's  employees,
officers, directors,  contractors, agents, licensees and/or concessionaires,  as
applicable (collectively, the "Colonial Parties").

          (g) Colonial  agrees to cooperate  with and support PTI in  connection
with the compliance with any government  requirements issued by any Governmental
Authority and applicable to the Telecommunications Network.

          (h)  Except as  expressly  stated in  Subsections  10.1(a)-(g)  above,
Colonial  makes no  warranty  to PTI or any  other  person  or  entity,  whether
express, implied or statutory, as to the description,  quality, merchantability,
completeness   or  fitness  for  any  purpose  of  the  Colonial   Rights-of-Way
(including,  without  limitation,  for the  purposes  for  which PTI may use the
Colonial  Rights-of-Way  hereunder),  or as to any  other  matter,  all of which
warranties are hereby excluded and disclaimed.

                                   ARTICLE XI
                    INDEMNIFICATION; LIMITATION OF LIABILITY

     11.1  Indemnification  by PTI. PTI hereby  indemnifies  and holds  harmless
Colonial,  the Colonial  Parties and Colonial's  affiliates and shareholders and
their respective employees, officers, directors,  contractors, agents, licensees
and concessionaires (collectively,  the "Colonial Indemnified Parties") from and
against any  liability,  loss,  damage,  claim or cause of action of any kind or
nature  (including damage to property and injury to or death of persons) whether
actual or  alleged,  or  payments  to any  person in  compromise  of  settlement
thereof,  whether or not liability has been shown or can be known, and any costs
or expenses in connection therewith (including,  without limitation,  reasonable
court costs,  costs of litigation and attorneys'  fees and expenses  incurred in
enforcing  same) arising out of or in connection with PTI's use of the leasehold
rights  granted herein (but only to the extent such claims do not arise from the
negligence,  gross  negligence or willful  misconduct of a Colonial  Indemnified
Party), including, without limitation:

          (a) third party claims, or any death or personal injury to, or loss or
     damage to any property of, a Colonial  Indemnified Party, to the extent any
     of the  foregoing  is  caused  in whole or in part by the  presence  of the
     Telecommunications  Network on any portion of the Colonial Rights-of-Way or
     at any Related Facility or the performance of any PTI Work or PTI Operation
     and Maintenance Services by PTI or any PTI Parties on or along the Colonial
     Rights-of-Way or at any Related Facility;

          (b)  penalties,  fines  or  forfeitures  imposed  by any  Governmental
     Authority  arising out of any failure or refusal by any PTI Party to comply
     with  Applicable  Laws  applicable  to the  installation,  operation,  use,
     maintenance or repair of the



                                      -22-
<PAGE>

     Telecommunications Network (including,  without limitation, any inadvertent
     effect the same may have on the Colonial Pipeline or any Related Facility);
     and

          (c) any other  liability  arising out of or resulting from the acts or
     omissions, negligent or otherwise, of any PTI Party or in connection with a
     breach by PTI of any of its obligations  under this  Agreement,  including,
     without  limitation,  liabilities  arising  out of PTI's  failure to obtain
     easement,  license,  lease or other Perfection Rights from any Landowner so
     as to allow PTI to install,  operate and  maintain  the  Telecommunications
     Network through designated Segments of the Colonial Rights-of-Way, it being
     acknowledged,  however, that nothing in this Subsection 11.1(c) shall limit
     or restrict in any manner the  obligations  and  restrictions  contained in
     Subsection 3.1(a) hereof.

     11.2  Indemnification  by Colonial.  Colonial hereby  indemnifies and holds
harmless PTI, the PTI Parties and PTI's  affiliates and  shareholders  and their
respective employees,  officers, directors,  contractors,  agents, licensees and
concessionaires  (collectively,  the "PTI Indemnified Parties") from and against
any  liability,  loss,  damage,  claim or cause of  action of any kind or nature
(including  damage to property and injury to or death of persons) whether actual
or alleged,  or  payments to any person in  compromise  of  settlement  thereof,
whether  or not  liability  has been  shown or can be  known,  and any  costs or
expenses in connection  therewith  (including,  without  limitation,  reasonable
court costs,  costs of litigation and attorneys'  fees and expenses  incurred in
enforcing same) arising out of or in connection with Colonial's operation of the
Colonial Pipeline and the Related Facilities (but only to the extent such claims
do not arise from the negligence,  gross  negligence or willful  misconduct of a
PTI Indemnified Party, including, without limitation:

          (a) third party claims, or any death or personal injury to, or loss or
     damage to any property of, a PTI  Indemnified  Party,  to the extent any of
     the foregoing is caused in whole or in part by the presence of the Colonial
     Pipeline or the Related Facilities;

          (b)  penalties,  fines  or  forfeitures  imposed  by any  Governmental
     Authority  arising out of any failure or refusal by any PTI Party to comply
     with  Applicable  Laws  applicable  to the  installation,  operation,  use,
     maintenance  or repair of the  Colonial  Pipeline or any  Related  Facility
     (including, without limitation, any inadvertent effect the same may have on
     the Telecommunications Network; and

          (c) any other  liability  arising out of or resulting from the acts or
     omissions,  negligent or otherwise,  of any Colonial Party or in connection
     with a breach by Colonial of any of its obligations under this Agreement.

     11.3  Limitation of  Liability.  In no event will Colonial be liable to PTI
for any  interruption of or  interference  with the  Telecommunications  Network
arising out of any cause  whatsoever,  except to the extent caused by Colonial's
gross negligence or willful misconduct.



                                      -23-
<PAGE>

     11.4 No  Consequential  or Special  Damages.  Neither  party hereto will be
liable to the other for any incidental,  punitive,  indirect,  consequential  or
special damages suffered by the other,  including lost profits,  lost savings or
loss of use.

     11.5  Legal  Proceedings.  If any  action,  suit or  proceeding  is brought
against a party to which any  indemnity is  described in Sections  11.1 or 11.2,
the indemnifying  party,  upon the request of the indemnified  party, and at the
indemnifying  party's  expense,  shall  resist and defend such  action,  suit or
proceeding,  or cause the same to be resisted and defended by counsel designated
by the indemnifying party and approved by the indemnified party. The obligations
of the indemnifying party under this Section 11.5 relating to any matter subject
to indemnification  under this Agreement that occurs,  arises, or accrues during
the Term shall survive the expiration or earlier  termination of this Agreement.
The indemnified  party,  at its sole expense,  also shall be entitled to appear,
defend or  otherwise  take part in the  matter  involved,  at its  election,  by
separate counsel of its own choosing. The indemnifying party will not settle any
claim  without  the prior  written  approval  of the  indemnified  party,  which
approval shall not be unreasonably  withheld or delayed.  The indemnified  party
will be entitled to settle any claim on terms it deems appropriate.  The parties
will  treat any  settlement  of any claim  and the  terms of the  settlement  as
confidential information.

                                   ARTICLE XII
                                     DEFAULT

     12.1  Event of  Default by PTI.  Subject  to the other  provisions  of this
Article XII, the occurrence of any of the following  shall  constitute an "Event
of Default" by PTI hereunder:

          (a)  Failure by PTI to make any  payment  owed to  Colonial  hereunder
     within  ten (10)  days  after  written  notice  thereof  is given to PTI by
     Colonial;

          (b) Failure by PTI to maintain any of the insurance  coverage required
     hereunder,  or to pay any of the premiums to be paid with respect  thereto,
     and such failure  continues for a period of fifteen (15) days after written
     notice thereof is given to PTI by Colonial;

          (c) PTI breaches or fails to perform, comply with or observe any other
     term, covenant, warranty, condition,  agreement or undertaking contained in
     or arising under this Agreement other than those referred to in Subsections
     12.1(a)  and (b) above,  and such  occurrence  or failure  continues  for a
     period of  thirty  (30)  days  after  written  notice  thereof  is given by
     Colonial to PTI; provided,  however, that if such default is a non-monetary
     default and is not  susceptible  of being cured within said thirty (30) day
     period,  then no Event of Default  shall occur  hereunder if PTI  commences
     commercially  reasonable  efforts to cure such  default  within such thirty
     (30) day period and  diligently  pursues  the same to  completion  within a
     reasonable  time  thereafter,  not to exceed a total of one  hundred  fifty
     (150) days;



                                      -24-
<PAGE>

          (d)  The  subjection  of any  right  or  interest  of PTI  under  this
     Agreement to attachment, execution or other levy, or to seizure under legal
     process, if not released within sixty (60) days;

          (e) PTI shall make an assignment for the benefit of creditors,  file a
     petition  in  bankruptcy,  petition  or  apply  to  any  tribunal  for  the
     appointment of a custodian, receiver or any trustee for it or a substantial
     part of its  assets,  or commence  any  proceedings  under any  bankruptcy,
     reorganization,   arrangement,   readjustment   of  debt,   dissolution  or
     liquidation law or statute of any jurisdiction, whether now or hereafter in
     effect;  or if there shall have been filed against PTI any such petition or
     application,  or any such proceeding shall have been commenced  against it,
     in which an order for relief is entered or which remains  undismissed for a
     period  of  ninety  (90)  days of  more;  or PTI,  by any act or  omission,
     indicates its consent to, approval of or acquiescence in any such petition,
     application  or  proceeding  or order for  relief or the  appointment  of a
     custodian, receiver or any trustee for it or any substantial part of any of
     its  properties,  or  suffers  any  such  custodianship,   receivership  or
     trusteeship  to continue  undischarged  for a period of ninety (90) days or
     more; or

          (f)  PTI generally is unable to pay its debts as such debts become
     due.

     12.2 Effect of Arbitration.  Notwithstanding the provisions of Section 12.1
hereof,  if the Event of Default or the asserted  default giving rise to same is
subject to  arbitration  pursuant  hereto,  and the  existence  of such Event of
Default  or  asserted  default is being  contested  by the party  assertedly  in
default,  then, if and so long as such party is  cooperating  and acting in good
faith  to  complete  the   arbitration   proceeding   with  respect  thereto  as
expeditiously  as  possible,  the time for curing such  asserted  default  shall
commence upon the rendering of the arbitration decision with respect thereto, or
other resolution thereof, whichever occurs first.

     12.3 Remedies of Colonial.

          (a) In  addition  to  all of the  rights  and  remedies  available  to
Colonial by law or equity (other than  termination of this Agreement which shall
be  available  as a remedy  for an Event of  Default  only as  provided  in this
Section  12.3),  at any time after the occurrence of any Event of Default on the
part of PTI:

               (i) in the event that such Event of Default is a recurring and/or
     flagrant breach of this Agreement and materially and adversely  affects the
     safety or operation of the Colonial Pipeline, Colonial shall have the right
     to terminate this Agreement immediately upon written notice to PTI; and

               (ii) in the event  that such  Event of Default is not of the type
     and  nature  described  in  clause  (i) of  this  Subsection  12.3(a),  but
     constitutes  a  material  breach of a material  covenant  of PTI under this
     Agreement,  Colonial  shall have the right,  upon written notice to PTI, to
     suspend immediately all then pending and future installation,  construction
     and/or deployment of the Telecommunications Network on or about any



                                      -25-
<PAGE>

     Segment or  applicable  portion  thereof with respect to which the Event of
     Default has occurred until such time as the applicable  Event of Default is
     cured or PTI demonstrates to Colonial's  reasonable  satisfaction  that PTI
     has  taken  such  steps  and/or  implemented  such  procedures  so that the
     particular Event of Default in question will not recur.

          (b) In the event of any  failure  on the part of PTI to pay any sum of
money,  or to do any act or to satisfy any of the  obligations or covenants that
it is required to pay, do or perform  under the  provisions  of this  Agreement,
Colonial,  at its option,  after notice to PTI, may pay any or all of such sums,
or perform any or all of such acts,  obligations or covenants or incur any other
expense  whatsoever  in order to remedy such failure on the part of PTI. In such
event,  PTI shall  reimburse  Colonial  for all costs and expenses of any nature
whatsoever incurred by Colonial in connection therewith,  together with interest
at the  Default  Rate  provided in Section  17.12  hereof,  such  interest to be
calculated from and after the date payment is made by Colonial or the expense is
incurred.

     12.4 Effect of  Termination.  At the  expiration of the Term or any earlier
termination  of  this  Agreement,  whether  pursuant  to  this  Article  XII  or
otherwise,  all rights and  privileges of PTI and all duties and  obligations of
Colonial  hereunder  shall  terminate.  Within  one  hundred  eighty  (180) days
thereafter,    PTI   shall   remove   all   above-ground   facilities   of   the
Telecommunications  Network and only such  underground  facilities that Colonial
reasonably  requests be removed so as to avoid future interference with Colonial
pipeline operations;  provided,  however, that PTI may remove fiber optic cables
from within any Conduits (but not the actual  Conduits) if such removal of fiber
optic  cables may be performed  without the use of heavy  machinery in and about
the Colonial  Rights-of-Way  and without the need to dig or excavate  within any
portion of the Colonial  Rights-of-Way.  Any  facilities  not removed within the
foregoing time period shall become the sole property of Colonial, free and clear
of  any  and  all  claims  of  PTI,  without  the  payment  of  compensation  or
consideration  of any kind to PTI.  Immediately  upon  such  termination  of the
Agreement,  and without  further notice to any other party,  Colonial shall have
the right to assert,  perfect,  establish  or confirm  all rights  reverting  to
Colonial by reason of such  termination by any means  permitted by law.  Subject
only to the  rights  and  obligations  of PTI to remove  certain  facilities  as
described in the second sentence of this Section 12,4, and the continuing rights
of any bona fide third party  purchasers or assignees who have complied with the
provisions of  Subsections  15.1(c) or (d) hereof,  as  applicable,  such rights
shall include, without limitation,  the right to take possession of the property
leased  to PTI  hereunder,  together  with all  improvements  thereto,  fixtures
therein and any other alterations or improvements that may have been made to the
property leased hereunder (including, without limitation, the Telecommunications
Network),  with or  without  process  of law,  and to  remove,  at the option of
Colonial,  any such items from the  property  licensed  to PTI  hereby,  thereby
wholly terminating any right,  title,  interest or claim of or through PTI as to
such  property.  If Colonial  exercises any such rights,  it shall not incur any
liability  to PTI for any damage  caused or sustained by reason of such entry or
removal, except for damage resulting from Colonial's gross negligence or willful
misconduct in effecting such removal.



                                      -26-
<PAGE>

     12.5 Event of Default by Colonial.

          (a) Subject to the other  provisions  of this Article XII, it shall be
an Event of Default by Colonial  hereunder if Colonial shall be in breach of, or
Colonial  shall fail to  perform,  comply  with or observe  any term,  covenant,
warranty, condition, agreement or undertaking contained in or arising under this
Agreement  and such  failure  continues  for a period of thirty  (30) days after
written notice thereof is given by PTI to Colonial;  provided,  however, if such
default is a non-monetary  default and is not  susceptible of being cured within
thirty (30) days, no Event of Default shall have occurred  hereunder by Colonial
if it commences commercially reasonable efforts to cure such default within such
thirty (30) day period and  diligently  pursues the same to completion  within a
reasonable  time  thereafter,  not to exceed a total of one hundred  fifty (150)
days.

          (b) At any time  after the  occurrence  of an Event of  Default on the
part of Colonial,  PTI may exercise any and all rights or remedies  available to
PTI at law or in equity,  subject only to any limitations expressly set forth in
this Agreement.

     12.6 No Waivers.  No failure by any party  hereto to insist upon the strict
performance of any provisions of this Agreement or to exercise any right,  power
or remedy  consequent to any breach  thereof,  and no waiver of any such breach,
during the continuance thereof,  shall constitute a waiver of any such breach or
of any such provision or otherwise be deemed to affect or alter this  Agreement.
In any such event,  this Agreement shall continue in full force and effect,  and
the rights of any party hereto with respect to any other then-existing breach or
subsequent breach shall remain unaffected thereby.

     12.7 No Remedy Exclusive.  Except as expressly provided in this Article 12,
no remedy  herein  conferred  or  reserved  to Colonial or PTI is intended to be
exclusive of any other  available  remedy or  remedies,  but each and every such
remedy shall be cumulative, and shall be in addition to every other remedy given
under this  Agreement  or now or  hereafter  existing  at law or in equity or by
statute.  The  exercise  of any right or remedy  should not be  construed  as an
election  of remedies  and shall not  preclude  the right to exercise  any other
right or remedy.  No delay or failure to  exercise  any right or power  accruing
upon any  default  or Event of Default  shall  impair any such right or power or
shall be construed to be a waiver  thereof,  but any such right and power may be
exercised from time to time and as often as may be deemed expedient. In order to
entitle  Colonial or PTI to exercise  any remedy  reserved to Colonial or PTI in
this Article XII, it shall not be necessary to give any notice,  other than such
notice as is herein expressly required by this Agreement.

     12.8 Force Majeure.  Neither party shall be in default under this Agreement
with  respect to any delay in such  party's  performance,  and all time  periods
shall be deemed  suspended,  to the extent  resulting  from any of the following
conditions:  act of God, fire, flood, material shortage or unavailability,  lack
of  transportation,  compliance with Applicable Laws, war or civil disorder,  or
any other cause beyond the reasonable  control of such party,  provided that the
party  claiming  relief  under this  Section  12.8 shall  notify the other party
promptly  in writing  of the  existence  of the event upon which such  relief is
claimed and further as to the cessation or



                                      -27-
<PAGE>

termination  of said event.  The party  claiming  relief under this Section 12.8
shall exercise reasonable efforts to minimize the time for any such delay.

     12.9 No Personal Liability.  Each action or claim against any party arising
under or relating to this  Agreement  shall be made only against such party as a
corporation,  and any  liability  relating  thereto  shall be  enforceable  only
against the  corporate  assets of such party.  No party shall seek to pierce the
corporate veil or otherwise seek to impose any liability relating to, or arising
from, this Agreement against any shareholder,  employee,  officer or director of
the other party.  Each of such persons is an intended  beneficiary of the mutual
promises  set forth in this  Article  XII and shall be  entitled  to enforce the
obligations of this Article XII.

                                  ARTICLE XIII
                 VOLUNTARY REMOVAL OF TELECOMMUNICATIONS NETWORK

     13.1 Removal of  Telecommunications  Network by PTI. Provided that an Event
of Default by PTI is not continuing to be in effect at such time, PTI may remove
any portion of the  Telecommunications  Network from any Segment (except for the
Colonial  Conduit and any Regen Facility or other Related  Facility that PTI has
made available for use by Colonial in connection with the Colonial Conduit,  all
of which must remain in place and intact in all  events) (it being  acknowledged
herein that PTI has no obligation  hereunder to provide any such Regen  Facility
or  Related  Facility  for  Colonial's  use),  provided  that as to  underground
facilities, PTI will provide Colonial with written notice of its intention so to
remove,  given (a) at least thirty (30) days prior to the date of such  removal,
and (b) not less than one (1) year  prior to the  expiration  of the Term.  Such
notice also will state whether PTI intends to replace the underground portion of
the  Telecommunications  Network so removed.  Upon the occurrence of an Event of
Default, PTI's rights of removal hereunder shall be suspended until such time as
such Event of Default has been cured.

                                   ARTICLE XIV
                                   ARBITRATION

     14.1 Arbitration.  In the event any dispute or disagreement arising between
Colonial and PTI in connection with this Agreement or the Fiber Optic Access and
Purchase Agreement is not settled to the mutual satisfaction of Colonial and PTI
within  thirty  (30) days from the date that either  party  informs the other in
writing that such dispute or disagreement  exists,  then either party may demand
arbitration by notifying the other party in writing (a "Notice of  Arbitration")
in  accordance  with the  notice  provisions  of  Section  17.1.  The  Notice of
Arbitration shall describe the reasons for such demand, the amount involved,  if
any, and the particular remedy sought.

     14.2  Selection of  Arbitrators.  The parties shall attempt to agree upon a
single  arbitrator;  however,  if the  parties are unable to agree upon a single
arbitrator  within fifteen (15) days after the Notice of Arbitration,  then each
party shall select an arbitrator within five (5) Business Days of the expiration
of the  initial  fifteen  (15)  day  period.  Upon  the  appointment  of the two
arbitrators,  and before  exchanging views as to the question at issue, said two
arbitrators



                                      -28-
<PAGE>

so selected shall appoint in writing a third arbitrator  within ten (10) days of
the selection of both of the first two arbitrators and shall give written notice
of such  appointment to the parties.  If the two  arbitrators  fail to appoint a
third  arbitrator in a timely manner,  then either party may apply to the United
States  District Court for the Northern  District of Georgia for the appointment
of such third arbitrator.

     14.3  Qualified  Arbitrator.  Any  arbitrator  selected in accordance  with
Section 14.2 shall be a natural  person not employed by either of the parties or
any parent or affiliated  partnership,  corporation or other enterprise  thereof
and  shall  be  knowledgeable  and  experienced  in  the  matters  sought  to be
arbitrated.   In  the  event  that  the  matter  to  be  arbitrated  deals  with
construction  or  engineering  issues,  the  arbitrator  so  appointed  shall be
experienced and knowledgeable in the construction and engineering industry as it
relates to the nature of the structure to which such arbitration applies. In the
event any arbitrator selected as aforesaid thereafter shall die or become unable
or unwilling to act, such  arbitrator's  successor shall be selected in the same
manner provided in Section 14.2.

     14.4 Arbitration Hearing;  Discovery;  Venue. The arbitration hearing shall
commence  within thirty (30) calendar days of appointment of the single or third
arbitrator,  as  applicable,  as  described in Section  14.2.  There shall be no
dispositive  motion practice (such as motions for summary judgment or to dismiss
or the like)  except as may be  permitted by the  arbitrators.  All  arbitration
shall be conducted  in  accordance  with the rules of the  American  Arbitration
Association,  except that  discovery  shall be permitted in accordance  with the
Federal Rules of Civil Procedure.  Venue of any arbitration  hearing pursuant to
this Article XIV shall be in the metropolitan Atlanta,  Georgia area. Each party
shall bear the cost of preparing and executing its own case.

     14.5 Decision.  The  arbitrators'  decision shall be made in no event later
than thirty (30) calendar days after the conclusion of the  arbitration  hearing
described in Section 14.4. The award shall be final and binding upon the parties
and shall include written  findings of law and fact, and judgment may be entered
thereon by either party in any court having competent  jurisdiction thereof. The
arbitrators may award specific  performance of this  Agreement.  The arbitrators
may  also  require  remedial  measures  as part of any  award.  The  cost of the
arbitration,  including  the fees and  expenses of the  arbitrator(s),  shall be
shared equally by the parties hereto unless the award otherwise provides.

     14.6  Non-Binding in Certain Events.  Notwithstanding  any provision to the
contrary in this Article XIV, the  obligation  herein to arbitrate  shall not be
binding  upon any party with respect to requests  for  preliminary  injunctions,
temporary  restraining  orders  or  other  procedures  in a court  of  competent
jurisdiction  to obtain  interim  relief when deemed  necessary by such court to
preserve the status quo or to prevent  irreparable  injury pending resolution by
arbitration of the actual dispute.



                                      -29-
<PAGE>

                                   ARTICLE XV
                                   ASSIGNMENT

     15.1 Assignment by PTI.

          (a) Except as expressly provided in this Section 15.1 below, PTI shall
not assign or  otherwise  transfer  this  Agreement  or its  rights,  covenants,
liabilities  or obligations  hereunder,  in whole or in part, to any other party
without the prior written consent of Colonial. Nothing herein shall prohibit PTI
from involving  strategic or co-development  partners or customers in connection
with its performance  hereunder,  on such terms as PTI may determine in its sole
discretion,  provided (i) all such  activities are conducted in accordance  with
the terms of this  Agreement;  (ii) PTI shall not be  released  from,  and shall
remain  fully  liable to  Colonial  for all of its  covenants,  liabilities  and
obligations  hereunder  and the acts or  omissions  of all parties  claiming by,
through or under PTI; (iii) PTI remains the sole point of contact with Colonial;
and (iv) all activities of parties claiming by, through or under PTI on Colonial
Rights-of-Way are conducted under PTI's supervision.

          (b) PTI shall have the right, without Colonial's consent, to assign or
otherwise  transfer  this  Agreement  (i)  to any  entity  that,  indirectly  or
directly,  is controlled by, controls or is under common control with PTI, or to
any entity into which PTI may be merged or  consolidated  or which purchases all
or  substantially  all of the assets of PTI; or (ii) as collateral in connection
with  any  financings  by any  lender;  provided,  however,  that  (x) any  such
assignment or transfer described in this Subsection 15.1(b) shall be subject and
subordinate  in all respects to this  Agreement and to Colonial's  rights as the
owner  of the  Colonial  Rights-of-Way;  (y) any  such  assignee  or  transferee
described in clause (i) above shall  continue to perform  PTI's  obligations  to
Colonial  under the terms and conditions of this  Agreement;  and (z) any lender
described in clause (ii) above shall have the right to assume all (but not part)
of PTI's  rights  and  obligations  under  this  Agreement.  In the event of any
permitted  partial  assignment of any rights  hereunder or in any portion of the
Telecommunications  Network,  PTI shall  remain the sole  point of contact  with
Colonial.

     15.2  Assignment  by  Colonial.  Colonial  shall  have the right to assign,
license or otherwise  transfer this  Agreement  and/or its rights or obligations
hereunder as it pertains to a particular  Segment (or discrete  portion thereof)
of the Colonial  Rights-of-Way,  in connection  with a sale or other transfer of
Colonial's  rights  within such Segment (or discrete  portion  thereof),  to any
third party;  provided,  however,  that any such assignment or transfer shall be
made subject to the terms and conditions of this Agreement and any such assignee
or transferee shall continue to perform Colonial's  obligations to PTI under the
terms and  conditions  of this  Agreement.  Colonial  also shall have the right,
without PTI's consent, to assign or otherwise transfer this Agreement and/or its
rights or obligations hereunder: (i) to any entity that, indirectly or directly,
is controlled by,  controls or is under common control with Colonial,  or to any
entity into which Colonial may be merged or  consolidated or which purchases all
or  substantially  all of the  assets  of  Colonial;  or (ii) as  collateral  in
connection with any financings by any lender.



                                      -30-
<PAGE>

     15.3 Binding Upon  Successors  and Assigns.  This Agreement and each of the
parties'  respective  rights  and  obligations  under this  Agreement,  shall be
binding  upon and shall inure to the  benefit of the parties  hereto and each of
their respective permitted successors and assigns.

                                   ARTICLE XVI
                                 CONFIDENTIALITY

     16.1 Confidentiality.  If either party provides confidential information to
the other in writing and it is  identified as such,  the  receiving  party shall
protect the  confidential  information from disclosure to third parties with the
same degree of care accorded its own confidential  and proprietary  information.
Neither party shall be required to hold  confidential  any information  that (a)
becomes publicly available other than through the recipient;  (b) is required to
be disclosed by a Governmental  Authority or Applicable Law; provided,  however,
that the information disclosed is limited to the existence and general nature of
the  relationship  between  the  parties,  including,  as  required,  the scope,
approximate revenues, purposes and expectations related to such relationship and
a description of any disputes relating thereto;  (c) is independently  developed
by the  disclosing  party;  or (d) becomes  available  to the  disclosing  party
without  restriction  from a third party.  These  obligations  shall survive any
expiration or termination of this Agreement.

                                  ARTICLE XVII
                                  MISCELLANEOUS

     17.1 Notices. All notices,  demands,  requests, or other writings delivered
pursuant to this  Agreement  shall be in writing and may be given  personally or
may be delivered by depositing  the same in the United  States mail,  certified,
registered or equivalent,  return receipt requested,  postage prepaid,  properly
addressed, and sent to the following addresses:

            If to Colonial:    Colonial Pipeline Company
                               945 E. Paces Ferry Rd., N.E.
                             Atlanta, GA 30326-0855
                               Attention:  General Counsel
                                Fax: 404-841-2315

            with a copy to:    Arnall Golden & Gregory, LLP
                               1201 West Peachtree Street, Suite 2800
                               Atlanta, Georgia 30309-2450
                               Attention: Donald I. Hackney, Jr., Esquire
                                Fax: 404-873-8639

            If to PTI:         Pathnet Telecommunications, Inc.
                               1661 Gateway Boulevard
                               Richardson, Texas  75080
                               Attention:  Senior Vice President, Engineering
                                Fax: 972-231-9728



                                      -31-
<PAGE>

            with a copy to:    Pathnet Telecommunications, Inc.
                               11720 Sunrise Valley Drive
                               Reston, Virginia 20191
                               Attention:  General Counsel
                                Fax: 703-390-2800

or to such other  address  as either  party may from time to time  designate  by
written notice to the other party.  Notices given by mail as aforesaid  shall be
deemed  received and  effective  as of the first  Business  Day  following  such
dispatch; provided, however, that if any such notice or other communication also
shall be sent by telecopy or fax  machine,  such notice shall be deemed given at
the time and on the date of machine  transmittal if the sending party receives a
written send  verification  on its machines and forwards a copy thereof with its
mailed or courier delivered notice or communication.

     17.2 No Partnership. Nothing contained herein or in any instrument relating
hereto shall be construed as creating a  partnership  or joint  venture  between
Colonial and PTI or between  Colonial and any other party,  or cause Colonial to
be  responsible  in any way for the  debts or  obligations  of PTI or any  other
party.

     17.3 Time of the Essence.  Time is hereby  expressly  declared to be of the
essence  of this  Agreement  and of each and every  term,  covenant,  agreement,
condition and provision hereof.

     17.4 Entire  Agreement.  Except for the  Services  Agreement  and the Fiber
Optic Access and Purchase Agreement,  this Agreement  constitutes the entire and
final  agreement  and  understanding  between  the parties  with  respect to the
subject  matter  hereof and  supersedes  all prior  agreements  relating  to the
subject  matter  hereof,  which are of no further force or effect.  The Exhibits
referred to herein are integral  parts hereof and are hereby made a part of this
Agreement.

     17.5  Captions.  The captions of this  Agreement  and the table of contents
preceding this Agreement are for  convenience  and reference only, and are not a
part of this  Agreement,  and in no way amplify,  define,  limit or describe the
scope or intent of this Agreement, nor in any way affect this Agreement.

     17.6 Meaning of Terms.  Words of any gender in this Agreement shall be held
to include any other  gender and words in the  singular  number shall be held to
include the plural when the sense requires.

     17.7 Agreement Construed as a Whole. The language throughout this Agreement
shall be construed as a whole according to its fair meaning and neither strictly
for nor against Colonial or PTI.

     17.8  Severability.  If any provision of this Agreement or the  application
thereof  to any  person  or  circumstances  shall to any  extent be  invalid  or
unenforceable,  the  remainder of this  Agreement,  or the  application  of such
provision to persons or circumstances other than those as to



                                      -32-
<PAGE>

which it is invalid or unenforceable,  shall not be affected  thereby,  and each
provision of this Agreement  shall be valid and shall be enforced to the fullest
extent permitted by law.

     17.9  Survival.  Each  provision  of this  Agreement  that may  require the
payment of money by, to or on behalf of Colonial or PTI or third  parties  after
the expiration of the Term hereof or its earlier  termination shall survive such
expiration or earlier termination.

     17.10 Amendment. This Agreement may be modified or amended only in writing,
signed by a duly authorized officer of both Colonial and PTI.

     17.11 Attorneys' Fees. In any proceeding or controversy  associated with or
arising out of this Agreement or a claimed or actual breach  thereof,  or in any
proceeding  to recover the  possession  of the property  leased  hereunder,  the
prevailing  party shall be entitled to recover from the other party as a part of
the prevailing  party's costs,  reasonable  attorney's fees, the amount of which
may be fixed by the court and may be made a part of any judgment  rendered.  For
the purposes of this Agreement, the term "reasonable attorneys' fees" shall mean
legal fees actually incurred by a party at the normal and customary hourly rates
of  attorneys  experienced  in the area of law in dispute and shall not be based
upon a percentage of any amount of any judgment,  notwithstanding  any statutory
or other presumption to the contrary.

     17.12  Interest.  Except as otherwise  specifically  provided  herein,  any
amounts due from one party to the other pursuant to the terms of this Agreement,
including  amounts to be reimbursed  one to the other,  shall bear interest from
the due date or the date the  right  to  reimbursement  accrues  at (a) the rate
published or publicly  announced  most recently prior to such date as the lowest
rate charged by Citibank,  N.A., or its successor,  for  commercial,  short-term
unsecured loans, plus (b) two percent (2%) (such sum being referred to herein as
the "Default Rate"); provided, however, that such Default Rate shall not exceed,
in any event, the highest rate of interest which may be charged under Applicable
Law  without the  creation of  liability  for  penalties  or rights of offset or
creation of defenses.  For purposes of interest  calculations  unless  otherwise
provided  herein,  the due date of any  amount or the date from which a right to
reimbursement  accrues  shall be  deemed  to be the  date  from  which  interest
accrues.

     17.13 Governing Law. This Agreement shall be construed according to and
governed by the laws of the State of Georgia.

     17.14 Business Days. For the purposes of this  Agreement,  a "Business Day"
shall mean a day on which banks are  required to open for the conduct of banking
business at their principal  offices under the laws of the State of Georgia.  If
this Agreement  provides for the performance of any obligation or the expiration
of any time  period on or no later than a day that is not a Business  Day,  then
the  applicable  day of  performance  or  expiration of the time period shall be
extended until the next succeeding Business Day.

     17.15. Reference Date of Agreement. For reference purposes, the date of
this Agreement shall be the date on the first page hereof, irrespective of the
date Colonial or PTI actually executes this Agreement.



                                      -33-
<PAGE>

     17.16 Counterparts. This Agreement may be executed in several counterparts,
each of which  shall be  deemed  to be an  original,  and all such  counterparts
together shall constitute one and the same agreement.

     17.17 Exhibits. The Exhibits to this Agreement are:

              EXHIBIT                       DESCRIPTION
              -------                       -----------
              Exhibit A               System Map
              Exhibit B               Form of Segment Lease
              Exhibit C               Form of Right-of-Way Permit
              Exhibit D               Currently Perfected Segments
              Exhibit E               General Colonial Construction Standards






                                      -34-
<PAGE>


     IN WITNESS WHEREOF, Colonial and PTI have executed this Agreement as of the
day and year first above written.

                                    COLONIAL:

                                    COLONIAL PIPELINE COMPANY,
                                    a Delaware corporation


                                       By:/s/ D.L. Lemmon
                                         ----------------------------------
                                         Name: D.L. Lemmon
                                               ----------------------------
                                         Its:  President and Chief Executive
                                                  Officer
                                               ----------------------------


                                                           [CORPORATE SEAL]


                                      PTI:

                                    PATHNET TELECOMMUNICATIONS, INC.,
                                    a Delaware corporation


                                       By: /s/ Richard Jalkut
                                         ----------------------------------
                                         Name:    Richard Jalkut
                                               ----------------------------
                                         Its:     CEO
                                               ----------------------------






                                      -35-
<PAGE>


                                    EXHIBIT A

                                   SYSTEM MAP

                            (Map of Colonial System)



                                      -35-

<PAGE>



                                    EXHIBIT B

                              FORM OF SEGMENT LEASE

- - - ------------------------------------------------------------------------------

                                  SEGMENT LEASE

         THIS SEGMENT LEASE (the "Segment Lease"), made this ____ day of
____________, ____, between COLONIAL PIPELINE COMPANY ("Lessor") and PATHNET
TELECOMMUNICATIONS, INC. ("Lessee").

                              W I T N E S S E T H:

         WHEREAS,  Lessor and Lessee  heretofore  have entered into that certain
Master Right-of-Way Lease Agreement (the "Master Lease Agreement"),  dated as of
March 30, 2000;

         WHEREAS,  pursuant to the Master Lease  Agreement,  Lessee has executed
and delivered to Lessor a "Designation Notice", conforming in form and substance
to the requirements of said Master Lease Agreement;

         WHEREAS, said Designation Notice describes a "Segment" of the "Colonial
Rights-of-Way",  which  Segment  is more  particularly  described  on  Exhibit A
attached hereto and incorporated herein; and

         WHEREAS,  Lessor and Lessee  desire to enter  into this  Segment  Lease
Agreement,  in accordance with the terms of the Master Lease Agreement, in order
to evidence  the  leasing of the Segment to Lessee,  subject to all of the terms
and conditions hereof and in the Master Lease Agreement.

         NOW,  THEREFORE,  for and in consideration  of the covenants  contained
herein, the sum of Ten and No/100 Dollars ($10.00),  and other good and valuable
consideration,  the receipt and  sufficiency  of which are hereby  acknowledged,
Lessor and Lessee hereby agree as follows:

         1. All capitalized  terms used herein and not otherwise  defined herein
shall have the same  meaning  as  ascribed  to such  terms in the  Master  Lease
Agreement.

         2.  Subject to  Section 4 hereof,  Lessor  hereby  leases to Lessee the
Segment on the terms and  conditions  contained  herein and in the Master  Lease
Agreement.

         3. The term of this  Segment  Lease  shall  commence on the date hereof
and, if not otherwise  terminated in accordance  herewith or in accordance  with
the Master Lease Agreement, shall terminate at the expiration of the "Term".

<PAGE>

         4.  The  parties  hereto  acknowledge  that,  after  completion  of the
"Perfection  Process"  with  respect to the Segment,  Lessor  shall  execute and
deliver to Lessee a "Permit"  for the  Segment,  in  substantially  the form set
forth on  Exhibit C to the Master  Lease  Agreement.  Notwithstanding  any other
provision  herein to the contrary,  the parties hereto further  acknowledge  and
agree  that,  upon the  issuance  of such  Permit  with  respect to the  Segment
described herein, this Segment Lease shall terminate automatically,  without the
requirement  of any  additional  action or  documentation  on the part of either
party,  with  respect to all  portions of the  Segment  for which  Lessee is not
granted specific rights to use under the terms of the applicable Permit.

         5. The Master Lease  Agreement  shall govern and control the use of the
Segment and,  upon the  issuance of the Permit,  the  applicable  portion of the
Segment described  therein.  Lessor and Lessee shall comply with all obligations
contained  in the  Master  Lease  Agreement  that  apply to the  Segment  or the
applicable  portion  thereof  and Lessor  and  Lessee  shall have all rights and
remedies  contained in the Master Lease Agreement with respect thereto.  Without
limiting in any way the  foregoing,  Lessee shall not have the right to commence
any "PTI Work" until  compliance  by Lessee with the  applicable  provisions  of
Sections 3.1 and 3.2 of the Master Lease Agreement.

         6. In the event of any  inconsistency  between any of the terms  hereof
and any of the terms of the Master Lease Agreement,  the applicable terms of the
Master Lease Agreement shall govern and control.

         IN WITNESS WHEREOF, the parties hereto have set their hands and seals
this ___ day of _______________, _______________.


                                     LESSOR:

                                     COLONIAL PIPELINE COMPANY

                                     By:      __________________________________
                                     Its:     __________________________________

                                                                [CORPORATE SEAL]
                                       -2-

<PAGE>


                                     LESSEE:

                                     PATHNET TELECOMMUNICATIONS, INC.

                                     By:      __________________________________
                                     Its:     __________________________________

                                                                [CORPORATE SEAL]
                                       -3-

<PAGE>


                       EXHIBIT A TO FORM OF SEGMENT LEASE

                             Description of Segment


                        [to be agreed to by the Parties]

                                       -4-

<PAGE>



                                    EXHIBIT C

                           FORM OF RIGHT-OF-WAY PERMIT


LEGAL DESCRIPTION OF RIGHT-OF-WAY

Colonial  right-of-way of  ________________  (INSERT ACCURATE LEGAL DESCRIPTION)
referenced in Segment Lease dated  __________ (the "Segment  Lease").  Beginning
approximately at Colonial Location No.  ___________ and ending  approximately at
Colonial Location No.  ___________ for a total distance of approximately  ______
miles and as further  described on attached as-built survey drawings provided by
PTI.

SPECIAL CONDITIONS ON USE OF RIGHT-OF-WAY

Notwithstanding  the terms of the Segment Lease, PTI shall have the right to use
only such  portions of the Segment that are the subject of the Segment  Lease as
are specifically  described  hereinbelow.  PTI telecommunication  lines, cables,
conduits  and other  similar  equipment  and  facilities  shall be  installed in
conformity   with  the  plans   mutually   approved  by  the  parties  prior  to
construction.  In general, the specifications anticipate a minimum separation of
ten feet (10')  between the  telecommunications  lines and the nearest  Colonial
pipeline.  Where the existing right-of-way provides more than fifteen feet (15')
between the Colonial  right-of-way  boundary and the nearest Colonial  pipeline,
the  telecommunication  lines shall be built five feet (5') from the edge of the
Colonial  right-of-way.  Said  routing  is  preliminarily  depicted  as shown on
attached  construction drawings and as-built survey drawings provided by PTI. It
is understood that PTI will need as workspace a strip of land approximately ____
feet  (____')  in width in which to  perform  construction  work and that,  upon
completion of such work, PTI will restore the  right-of-way  in accordance  with
the agreements  between  Colonial and the Landowners and in accordance  with the
Colonial post-construction  grassing specifications,  but under no circumstances
shall  restoration  result in the  condition  of the  subject  land  being  less
favorable to the underlying  Landowner than the condition existing prior to such
work.  Depth of installation,  which shall be at least thirty-six  inches (36"),
and the  determination  as to the  side of the  Colonial  right-of-way  on which
installation  shall occur must be addressed and PTI must give advance  notice to
Colonial  of the time and place of any  construction.  Colonial  shall  have the
right to observe and inspect all construction within any Colonial  right-of-way.
All  construction  work shall be completed  within  _________ (____) days of the
date hereof and shall be performed lien free and upon completion of construction
PTI shall  deliver a final  affidavit  and lien  waivers  from all  contractors,
subcontractors  and other  persons  performing  work or  supplying  material  or
equipment.

<PAGE>

ACKNOWLEDGMENT

Colonial and PTI acknowledge that they intend for this Permit to be incorporated
into  the  Master   Right-of-Way  Lease  Agreement  between  the  parties  dated
March 30, 2000 and that this Permit hereby modifies the aforesaid  Segment Lease
by limiting the description of the  right-of-way  leased thereby to the specific
property described herein. The effective date of this Permit is the last date on
which this Permit was signed by either party, as indicated below.

COLONIAL PIPELINE COMPANY,                  PATHNET TELECOMMUNICATIONS,
a Delaware corporation                      INC., a Delaware corporation

By:                                         By:
   -------------------------                   -------------------------
Its:                                        Its:
    ------------------------                    ------------------------
Date:                                       Date:
     -----------------------                     -----------------------

                                       -2-

<PAGE>



                                    EXHIBIT D

                          Currently Perfected Segments

Listed  below are the  segments  of Colonial's  right of way  that have been
perfected(1) for telecommunications  purposes:

1.   Americus  Delivery  Facility to Bainbridge  Deliver  Facility (common name)
     more  particularily  described  as  that  segment  of the  Colonial  System
     referenced  as  Location  Locations  0515:001  to  0515:098  in Sumter  and
     Dougherty  Counties,   Georgia,  and  Locations  0516:001  to  0516:114  in
     Dougherty, Mitchell, Baker and Decatur County, Georgia.

2.   Dorsey Junction to:

     (a)  South  Baltimore  Delivery  Facility - Location  1007:001 to 1007:176;
          Location  1008:001 to  1008:069;  and  Location  1010:070 to 1010:176,
          Carroll, Howard, Anne Arundel and Baltimore Counties, Maryland;

     (b)  Curtis Bay Delivery Facility - Location 1007:001 to 1007:171, Carroll,
          Howard and Anne Arundel Counties;

     (c)  Baltimore-Washington Airport Delivery Facility - Location 1008:001 to
          1008:069 and Location  1012:001 to  1012:011, Carroll,  Howard and
          Anne Arundel Counties;

     (d)  Washington  Delivery  Facility - Location  1009:001  to  1009:026  and
          Locations  1501:026A  to 1501:163,  Carroll,  Howard,  Montgomery  and
          Prince  George's  Counties,  Maryland and in the District of Columbia;
          and

     (e)  Finksburg  Delivery Facility - Location  1009:001 to 1009:052,  Howard
          and Carroll  Counties,  Maryland.

3.   Atlanta Junction to Chattanoogo  Delivery  Facility - l=Locations 504, 505,
     506,  507 & 508.  Project was halted 2 1/2 weeks after start of  perfection
     acquisition.  During  this  2 1/2  period,  21  easement  perfections  were
     acquired  (16 in Cobb  County,  Georgia -  Location  504;  and 5 in Pauling
     County, Georgia - Location 505).


- - - -----------------

(1) The "perfected segments" in segment 1 above are substantially  perfected. In
some cases,  parcels  were omitted  because of  unreasonable  difficulties  that
suggested alternate routing within road rights-of-way that were left unpermitted
until construction was scheduled. In segment 2, 140 out of 257 parcels contained
telecommunications provisions.


<PAGE>



                                    EXHIBIT E

                     GENERAL COLONIAL CONSTRUCTION STANDARDS

A.       GENERAL DESCRIPTION OF PROJECT - PROTECTION OF UNDERGROUND PIPELINES
         FROM FIBER OPTICS INSTALLATION

This project consists of the protection of underground  petroleum pipelines from
a third  party's  installation  of fiber  optics  cables and related  facilities
within  the  pipeline  right  of  way.  These  specifications  govern  all  such
installations  regardless of their location,  rural or urban,  regardless of the
width of the right of way,  the depth or size of the  pipelines,  or the size of
the proposed fiber optic conduits.

These  specifications  are designed to be made a part of any  agreement  between
Colonial and the fiber optic party encroaching on the pipeline right of way, its
construction contractor and any entity contracted to perform utility location or
inspection  services  for  the  benefit  of  either  party  (collectively,   the
"Company").

B.       THE PARTIES ARE CAUTIONED AS FOLLOWS

         B.1. The  underground  pipeline  which is the subject of the protective
measures described herein is a carrier of a hazardous and highly volatile liquid
under high pressure. Damage to the pipeline must be avoided in all circumstances
and at any cost.  Personal  injury  and loss of life are not  unlikely  if fiber
optic construction equipment comes in contact with the pipeline.  Serious damage
to property and the  environment  in the  magnitude  of the highest  order are a
certainty if a leak results from damage to the pipeline. Damage to the pipelines
from such third party  installation  might result in an immediate rupture or are
likely to weaken the pipeline to the extent that a leak is inevitable. In either
event the  resulting  damage to the  property  and the  environment  is  usually
catastrophic.

         B.2. The Company,  its  contractors,  agents and  subcontractors  shall
indemnify,  defend and hold  Colonial  harmless for all injury to all persons or
property,  loss and damage  resulting from a leak caused  directly or indirectly
from installation of the fiber optic facilities contemplated hereunder,  and any
direct or indirect consequences  therefrom,  whether such injury to the pipeline
was caused by negligence, recklessness, or willful misconduct or by a failure to
protect the pipeline as described in these specifications.

         B.3. The herein  obligations  of the Company shall continue for so long
as a  pipeline  remains  within  the  right of way  easement,  and  shall not be
extinguished upon the sale, assignment or removal of the fiber optic facilities,
and such obligations  shall be binding upon up the successors and assigns of the
Company

                                       -i-

<PAGE>


C.       PRE-CONSTRUCTION REQUIREMENTS

         C.1.  Subsequent to Colonial  providing  data  regarding its easements,
title,   pipeline  location  and  survey,  the  Company  shall  coordinate  with
Colonial's  Right  of Way  and  Engineering  departments  throughout  its  title
confirmation, route survey and rights acquisition activities.

         C.2.  Upon  completion  of work  in  C.1,  the  Company  shall  prepare
alignment  sheets,  ownership  and  construction  line  lists,  and  work  plans
necessary to prosecute the work described below.

         C.3. Among other things,  the line lists shall include landowner names,
tenants,  special  construction  provisions,  and  Colonial  shall  preview  all
instrument  forms used to perfect the rights required to install the fiber optic
facilities.

         C.4. Among other things, the alignment sheets shall include:  the width
of  Colonial's  easement,  the location of  Colonial's  pipelines,  the proposed
location of the Company's  facilities and the proposed  construction  work space
limits  and  distances  of  separation  of  same  with  pipelines  and  easement
boundaries.

         C.5.  Among other things,  the work plans shall include a detailed list
of construction procedures,  contractors and equipment.  Colonial shall be given
the  opportunity  to preview  the  Company's  proposed  construction  contracts,
provide comments and recommendations, whereupon the Company shall cooperate with
Colonial  to remove  all  items  denoted  as "in  conflict"  with the  safety of
Colonial's pipelines,  as determined in Colonial's sole and absolute discretion.
Colonial shall inspect and approve all final  installations,  specifications and
route maps prior to commencing fiber optic installation  within its right of way
easements.

         C.7. Prior to  commencement  of  construction  activities,  the Company
shall  provide  Colonial  with a list of all  successful  bidders  contracted to
perform  any and all work in  prosecution  of its  construction,  as well as the
names of employees  and  personnel  in  supervisory  positions  assigned to such
activity.

         C.8. Upon approval of the specifications, Colonial shall furnish a copy
of its  detailed  encroachment  requirements  for all phases of fiber optic line
co-location  within Colonial's  easements.  These requirements shall include but
not be limited to:  ditching;  placement of backfill,  replacement  of backfill;
tamping and  compaction;  rock  excavation;  blasting;  road,  railroad or water
crossings by  trenching,  boring,  jacking  and/or  directional  drilling;  soil
erosion and sedimentation  control;  equipment traffic  paralleling and crossing
the pipeline(s),  including  requirements for earthen padding, when and how much
is needed; notification;  inter-Company communication and landowner relations. A
guided boring head shall be used when boring, jacking or directional drilling is
performed.

                                      -ii-
<PAGE>

         C.9.  Colonial and the Company shall compare  operating and maintenance
manuals,  and  revisions  shall be made to include the  presence of each other's
facilities and what measures  shall be taken to protect the other's  facilities,
including emergency response procedures and notification instructions.

         C.10. All inspectors used to ensure that the  installation is performed
to  Colonial's  standards  as  expressed  herein  shall be chosen and trained by
Colonial.  Colonial  shall  provide  the Company  with a list of its  inspection
personnel,  and the Company shall submit any objections or suggestions about the
deployment of such personnel and their roles as described below.

D.       COMPANY EQUIPMENT EMPLOYED TO INSTALL THE FIBER OPTIC FACILITIES

         D.1. The Company shall list and describe all equipment and machinery
which shall be used to construct and install the fiber optic facilities.

         D.2.  Colonial  shall be given the  opportunity to review the impact of
the proposed  equipment and machinery and amend these  specifications to account
for any equipment not anticipated at the time of this Agreement.

         D.3.  The  Company  shall  make its best  efforts  to  comply  with any
Colonial  suggestions  regarding the use of said equipment and suggested  safety
procedures,  and  cooperate  with  Colonial  to resolve  any  conflicts  ensuing
therefrom.

E.       LANDOWNER RELATIONS

         E.1. The Company shall include the following landowner relations
activities in prosecution of its construction activities:

                  (a)      Provide personnel to conduct courtesy notifications
                           to landowners of impending construction activities;

                  (b)      Make arrangements to protect and contain livestock
                           and other landowner animals and pets;

                  (c)      Take down fences and replace same, repairing any
                           damage resulting therefrom;

                  (d)      Conduct   post   construction   cleanup   activities,
                           including  the  reseeding  of the  construction  work
                           space  area with  ground  cover and  erosion  control
                           devices;

                  (e)      Settlement of all off right of way damages, and the
                           payment of all construction damages not paid in
                           advance of construction.

                                      -iii-

<PAGE>

F.       SURVEYS AND MAPPING

         F.1. The Company shall provide as-built survey personnel during
construction to document actual placement of all underground and above-ground
facilities.

         F.2. Alignment sheets of the proposed routing shall be updated monthly
during construction and distributed to designated Colonial offices.

G.       APPROVAL OF INSPECTOR

         G.1.  No fiber  optic  installation  will be allowed to commence in any
Colonial right of way easement without the presence of a Colonial  inspector and
such inspector's approval to proceed.  Daily work permits shall be obtained from
Colonial  for  all  crews  performing  excavation  or  installation  within  the
easement.

         G.2. The inspector is charged with the responsibility of protecting the
pipelines, and any construction activity observed in violation of this Agreement
shall be communicated to the offending equipment operator or other person acting
in violation of this  Agreement,  whereupon the person  performing the offending
activity shall immediately refrain from such activity.

         G.3.  Failure to refrain from the activity in violation of the terms of
this Agreement shall result in an immediate shut down of such activity until the
Company provides adequate  reassurances that corrections have been made to avoid
further occurrence of said activity.

         G.4. Failure to observe a shut down order by an inspector shall result
in a breach of this Agreement and subject the Company to the penalties
described in this Agreement under Article XII.

H.       LOCATING AND FLAGGING THE FACILITIES, AND MARKING THE CONSTRUCTION
         LIMITS

No fiber optic installation will be allowed to commence in any Colonial right of
way  easement  without  the  marking  of the  centerlines  of all of  Colonial's
existing  pipelines and  appurtenances,  as well as the flagging of the route of
the fiber optics lines and the limits of the construction work space.

         H.1.  Locating  the  pipelines  shall be  accomplished  by  utilizing a
Metrotech  model 810 inductive  type finders or  equivalent,  in the  conductive
mode,  supported by metal rods probing at the placement of every stake, and then
confirming the location by finding the top of the pipe with a probe rod. Probing
shall only be performed by Colonial personnel,  unless approved and inspected by
Colonial's inspector.

                                      -iv-

<PAGE>

         H.2. Flagging stakes on the centerline of the nearest pipeline shall be
made of  three-foot  (3') wood  lathing  with red ribbon  flagging  and shall be
placed at  intervals  not  exceeding  fifty  feet  (50')  separation  and at all
pipeline P.I. all fence  crossing,  road and railroad right of way limits and at
all waterway high water marks, along with spray painting of the ground where the
stake enters the earth's  surface.  Pipeline  centerline  stakes and fiber optic
line stakes  shall be labeled with  station  numbers at foreign line  crossings,
property  lines,  and the limits of all  crossing  easements  and flagged with a
contrasting  color from  interval  stakes.  If pipeline  station  numbers do not
correspond  with Colonial  alignment  sheets,  the route  surveyor  shall notify
Colonial's  inspector  and  make  note  of  discrepancies  on a set of  Colonial
alignment sheets  designated for changes in surface  observations.  The pipeline
right of way  shall be clear  cut or  mowed  to  allow  visibility  of  staking.
Replacement  of all stakes is  mandatory  should they  disappear  prior to fiber
optic installation.

         H.3. The boundary of the work space closest to the  pipelines  shall be
staked with optic  yellow,  continuous  police-type  ribbon draped from stake to
stake, each stake exceeding three feet (3') above ground.

         H.4.  The  centerline  of the  fiber  optic  lines  shall be  staked at
intervals not  exceeding  fifty feet (50')  separation  and shall be marked with
optic orange flagging.

         H.5. All pipelines must be located to ensure that the pipeline  closest
to the proposed installation is identified,  however, the Company is required to
flag only the closest pipeline.

I.       CONSTRUCTION AND SAFETY

         I.1.  Placement - All linear fiber optic lines shall be installed  near
the outer  limits of  Colonial's  easements,  and  under no  circumstances  will
Colonial  approve the  installation  of linear fiber optic lines within ten feet
(10') of the centerline of any of its pipelines.

         I.2. If the existing width of Colonial's easement is insufficient to
provide a 10-foot separation, then an easement modification or an new easement
must be acquired.

         I.3. Copies of any easement modification or new easements shall be
provided to Colonial prior to commencing installation of the fiber optic lines.

         I.4.  Machinery and equipment  shall only be allowed to cross or travel
across  Colonial's  pipelines  within  designated  crossing lanes that have been
built up with extra  earth  padding  and/or  other  protection  as  approved  by
Colonial's  inspector.  No  other  work  shall be  permitted  on top of or above
Colonial's pipelines without a written work variance  authorization  executed by
Colonial's chief engineer,  and accompanied by a written description of the work
to be performed.

                                       -v-

<PAGE>

         I.5. No longitudinal vehicle and equipment traffic over Colonial's
pipelines will be permitted.

         I.6. Colonial does not require the installation of fiber optic lines be
at a certain depth,  provided,  however,  that where a crossover is necessary (a
crossover  meaning  the  need to move the  fiber  optic  lines  from one side of
Colonial's  easement  to the other) the fiber  optic  lines  shall be encased in
steel the entire  distance of the  crossover,  and they shall always cross below
Colonial's lines at a minimum clearance of 24 inches. When crossing any Colonial
pipeline,  the pipeline  crossing location shall be excavated to the extent that
the crossing can be observed without obstruction, and all excavation within five
feet (5') of the outer  wall of a pipeline  shall be  performed  by hand  tools,
unless  authorized by the Colonial  inspector.  All crossovers  shall be made as
near as practical to the  perpendicular  (90 degrees).  The number of crossovers
shall be held to an absolute minimum.

         I.7. Any surface altering  equipment  necessary for the installation of
the communication  facilities will only be permitted  subsequent to the approval
of individual site plans. All  installations  within Colonial  facility property
shall be permitted subsequent to locating all underground pipeline facilities by
Metrotech  pipe  finders,   probing  and  hand  digging  to  visually  spot  the
facilities.  Any  clearing and grading  within the  easement  area shall only be
performed in the presence of a Colonial inspector.

         I.8.  The  installation  of  cables,   conduits,   fibers,   equipment,
appurtenances and all other facilities,  whether above or below ground, shall be
located no less than ten feet (10') from the centerline of any Colonial pipeline
in its right of way,  which shall be  extended to a minimum  distance of no less
than  twenty  feet  (20')  at all  road  and  water  crossings  or in any  other
circumstance  where  installation  requires  boring or  drilling  or where  soil
conditions dictate.

         I.9. No installation shall proceed without the presence of a Colonial
inspector on site and in a position to observe the installation activity.

         I.10. No installation shall proceed without the presence of staking
and flagging as described in Section H above.

J.       POST-CONSTRUCTION DELIVERABLES

         J.1. Within six months of completion of the installation contemplated
herein the Company shall provide Colonial:

                  (a) "as built"  alignment  sheets and survey,  indicating  the
location of fiber optic  installations,  the depth of the fiber optic facilities
were  buried,  the  distances  to  the  nearest  Colonial  pipelines,   Colonial
stationing and reference to Colonial's alignment sheets; and

                  (b) updated title information and line lists.

                                      -vi-




     Portions of this exhibit have been  omitted and filed  separately  with the
Securities and Exchange Commission. These portions are designated "[ * * * ]".

                                                                    Exhibit 10.6


                    FIBER OPTIC ACCESS AND PURCHASE AGREEMENT


     This FIBER OPTIC ACCESS AND  PURCHASE  AGREEMENT  ("Agreement")  is entered
into as of this  30th day of March,  2000  between  PATHNET  TELECOMMUNICATIONS,
INC., a Delaware  corporation  ("PTI") and COLONIAL PIPELINE COMPANY, a Delaware
and Virginia corporation ("Colonial").

     WHEREAS,  Colonial  and PTI have  entered  into that  certain  Contribution
Agreement  dated November 2, 1999 (the  "Contribution  Agreement"),  pursuant to
which,  among other things,  Colonial has agreed to contribute certain assets to
PTI and PTI has agreed to issue  certain  shares of stock to  Colonial,  as more
particularly described therein;

     WHEREAS,  contemporaneous herewith,  Colonial and PTI have entered into the
Lease  pursuant to which,  subject to the terms and conditions of such Lease and
this  Agreement,  Colonial has leased to PTI specified  portions of the Colonial
Rights-of-Way  to be  designated,  from time to time,  in order to permit PTI to
construct,  install,  operate,  maintain,  replace,  reconstruct,  remove and/or
relocate (collectively, "Construct or Operate") a Telecommunications Network (as
hereinafter defined);

     WHEREAS, Colonial and PTI have entered into the Lease on the condition that
PTI  and  Colonial   agree  to  certain   additional   terms   regarding   PTI's
Telecommunications Network as described herein; and

     WHEREAS,  Colonial  also desires to purchase from PTI, and PTI also desires
to sell to Colonial, a Conduit within PTI's  Telecommunications  Network, on the
terms and conditions described herein.

     NOW,  THEREFORE,  in consideration of the foregoing premises and the mutual
covenants and promises of the parties and other good and valuable consideration,
the receipt and sufficiency of which are hereby acknowledged,  the parties agree
as follows:

     1.   Definitions.

     For purposes of this Agreement, the following terms shall have the meanings
set forth below:

     (a)  "Affiliate"  shall mean an entity  that,  directly or  indirectly,  is
          controlled,  under common control with, or controls another entity, or
          the   successor  to  an  entity  by  merger  or  purchase  of  all  or
          substantially all of such entity's stock or assets.

     (b)  "Colonial Conduit" shall be defined as provided in Section 7 hereof.

     (c)  "Colonial Rights-of-Way" shall have the meaning ascribed to such term
          in the Lease.

                                       -1-
<PAGE>

     (d)  "Colonial System" shall have the meaning ascribed to such term in the
          Lease.

     (e)  "Conduits" shall have the meaning ascribed to such term in the Lease.

     (f)  "Designated  Affiliate"  shall mean the  entities  named in Exhibit B,
          attached hereto and incorporated by reference herein.

     (g)  "Disposition"   in  reference  to  the  Colonial  Conduit  or  to  any
          telecommunications  capacity shall mean the sale, assignment,  barter,
          swap,  lease,  license,  sub-license,  making  available  to, or other
          transfer  or grant of rights  therein or in respect  thereof,  and the
          terms "Dispose" and "Disposed" shall be interpreted accordingly.

     (h)  "Landowner" shall have the meaning ascribed to such term in the Lease.

     (i)  "Lease" shall mean that certain Master  Right-of-Way  Lease  Agreement
          entered into by Colonial and PTI in substantially the form attached as
          Exhibit A hereto.

     (j)  "Lease  Date" shall mean the date on which the Lease is  executed  and
          becomes binding and effective on the parties thereto.

     (k)  "Restriction  Release  Date"  shall  mean the  earlier of the date (i)
          which is five (5) years following the Lease Date; or (ii) on which PTI
          makes an assignment  for the benefit of  creditors,  files a voluntary
          petition in bankruptcy,  or an  involuntary  petition in bankruptcy is
          filed  against PTI (unless such petition is dismissed or stayed within
          ninety (90) days).

     (l)  "Segment" shall have the meaning ascribed to such term in the Lease.

     (m)  "Telecommunications   Network"   shall   mean  a   network   or  other
          communications  system capable of transmitting  voice, data, images or
          other  information  over strands of optical fiber,  copper wire, radio
          waves, or other transmission media.

     2.   Right to Lease. Upon the closing of the transaction contemplated by
the Contribution Agreement, PTI and Colonial shall enter into the Lease and all
other documentation reasonably necessary to more fully effectuate the terms
thereof.

     3.   Limited Exclusivity. Except with respect to the Colonial Conduit
(which can be commercialized or used in accordance with the provisions of
Section 7 below) and as otherwise contemplated hereunder and in the Lease, for a
period of ten (10) years following the Lease Date:

          (a) Colonial shall not, directly or indirectly,  lease to, license to,
     make  available  to, or  otherwise  permit  the use of by any other  party,
     including,  without limitation,  any Affiliates of Colonial, any portion of
     the  Colonial   Rights-of-Way  for  the  Construction  or  Operation  of  a
     Telecommunications Network; and



                                       -2-
<PAGE>

          (b) Colonial shall not, directly or indirectly,  use or permit the use
     of any  portion  of the  Colonial  Rights-of-Way  for the  Construction  or
     Operation of a Telecommunications Network.

The  foregoing  restrictions  shall not  apply to any  portion  of the  Colonial
Rights-of-Way that reverts to Colonial pursuant to Section 1.4 of the Lease.

     4.  Provision  of  Telecommunications  Capacity  to  Colonial.  Subject  to
availability,  as  determined  by PTI  from  time  to  time  in  its  reasonable
discretion and taking into account the reasonably  anticipated  level of traffic
on PTI's Telecommunications  Network,  Colonial shall have the right to purchase
telecommunications  capacity  on PTI's  Telecommunications  Network  at the best
price and terms that such  capacity  has been or is being  offered by PTI to its
preferred customers. The foregoing  telecommunications  capacity may not be used
in any manner  that  competes  with PTI or its  Affiliates,  including,  without
limitation,  used for any  purpose  other than for the  internal  communications
purposes of Colonial and its  Affiliates,  and may not be Disposed of or used in
connection   with   any   other   Telecommunications   Network   or  any   other
telecommunications venture or business.

     5. Compensation for Similar Transactions.  If, at any time from the date of
this  Agreement  until [ * * * ], PTI and/or one of its affiliates or successors
shall  enter  into an  agreement  or  other  contractual  relationship  with any
Designated  Affiliate  pursuant  to which PTI  and/or one of its  Affiliates  or
successors  shall  have the right or  license  to use,  lease or  occupy  all or
portions of the  right-of-way  of one or more of the  Designated  Affiliates for
development  of a  Telecommunications  Network,  PTI shall pay to Colonial a fee
equal  to [ * * * ] per  mile of  right-of-way  which is  covered  by each  such
agreement or relationship. The payment of such fee shall be made within ten (10)
business  days  of  the  execution  of  such  agreement  or  other   contractual
relationship.

     6.   [INTENTIONALLY DELETED]

     7.   Purchase and Sale of Colonial Conduit.

          (a) In addition to the  transactions  contemplated by the Contribution
Agreement,  but simultaneously  with the closing of such transactions,  Colonial
shall  pay  to  PTI  the  sum  of  Four  Million  Dollars  ($4,000,000.00).   In
consideration  thereof,  PTI agrees that along:  (i) any Segment of the Colonial
Rights-of-Way in which PTI installs  Conduits and in which Colonial's  engineers
have  determined  that PTI can install  eight (8) or more  Conduits  within such
Segment  or  applicable  portion  thereof;  (ii)  any  Segment  of the  Colonial
Rights-of-Way  in which PTI notifies  Colonial that it desires to  commercialize
and deploy less than all of the available  Conduits permitted by Colonial within
such Segment (even if Colonial's engineers have determined that the installation
by PTI of at least eight (8) Conduits within such Segment or applicable  portion
thereof is not  commercially  feasible because of pipeline  integrity,  pipeline
safety,  engineering or construction  reasons; and (iii) any other rights-of-way
acquired  by PTI along the  market  corridor  of the  Colonial  System  that are
necessary  as  substitutions  for or  supplements  to portions  of the  Colonial
Rights-of-Way in which PTI installs Conduits, PTI will



                                       -3-
<PAGE>

convey one such Conduit  installed by PTI within any such Segment or substituted
area to Colonial for the exclusive  use,  ownership or control by Colonial,  its
successors  and assigns  (as  applicable,  the  "Colonial  Conduit");  provided,
however,  that Colonial shall be entitled to only 2200 miles of Colonial Conduit
in the aggregate.

          (b) Colonial  shall own and have full title to such  Colonial  Conduit
from and after the  installation  thereof within any such Segment or substituted
area,  and PTI promptly  thereafter  shall  execute  such  documents as shall be
reasonably  required to  evidence  the title  thereto  vested in  Colonial.  PTI
covenants and agrees not to assign,  mortgage,  hypothecate,  pledge,  encumber,
permit a lien to be placed on, or  otherwise  transfer all or any portion of the
Colonial Conduit.

          (c)  Notwithstanding the foregoing Subsection 7(a), the parties hereto
agree and acknowledge that:

               (i) (aa) in the event that  Colonial's  engineers have determined
     that  the  installation  by PTI of at least  eight  (8)  Conduits  within a
     particular  Segment  or  applicable  portion  thereof  is not  commercially
     feasible because of pipeline  integrity,  pipeline  safety,  engineering or
     construction  reasons,  and (bb) if PTI desires to commercialize and deploy
     all of the available  Conduits  permitted by Colonial  within such Segment,
     then there will not be a Colonial  Conduit  available for the exclusive use
     by Colonial within that Segment or the applicable portion thereof; and

               (ii) as of the fifth (5th) anniversary of the Lease Date, PTI may
     not have installed its Telecommunications  Network (and, thus, the Colonial
     Conduit) within  Segments  aggregating at least 2,200 miles of the Colonial
     System.

In either of the  circumstances  described  in clauses (i) and (ii)  above,  the
parties  will  negotiate  in good faith to make  available  to  Colonial,  at no
charge, a suitable  alternative to such Colonial Conduit,  which alternative may
include  the  right to use fiber  within a  conduit,  the right to an  undivided
percentage  interest in a conduit,  and/or the right to use fibers or conduit on
other portions of PTI's  network,  in each case such  alternative  having a fair
market value  comparable to such of the Colonial  Conduit as shall have not been
provided.  Within  (x)  six  (6)  months  (if  during  the  first  year  of this
Agreement),  or (y) two (2) months  (if after the first year of this  Agreement)
after Colonial has knowledge that there will not be a Colonial Conduit available
in a particular Segment or portion of the Colonial System,  Colonial may deliver
written notice to PTI (the "Equivalency Request Notice"), designating the nature
and type of  equivalency  that  Colonial  requests to receive from and after the
Restriction  Release Date. If Colonial and PTI have not agreed on the nature and
type of such  equivalency  within  thirty (30) days after  PTI's  receipt of the
Equivalency  Request  Notice,  then  either  party  may  institute   arbitration
proceedings in accordance with Section 14 of the Lease.

          (d)  Until the Restriction Release Date:

               (i)  the Colonial Conduit may not be used in any manner that
     competes or facilitates competition with PTI or its Affiliates;



                                       -4-
<PAGE>

               (ii) the  Colonial  Conduit  may be used  only  for the  internal
     communications  purposes of Colonial  and its  Affiliates;  provided  that,
     although  Colonial may be reimbursed by any such  Affiliates for applicable
     costs and expenses,  Colonial may not earn a profit on such  operations for
     internal communications purposes; and

               (iii)  neither the Colonial  Conduit,  nor any optical  fibers or
     other  communications  media  installed  therein,  nor any capacity on such
     media, may be Disposed of or otherwise made available to third parties,  or
     (other than as set forth in item (ii) above)  used in  connection  with any
     Telecommunications  Network  or any  other  telecommunications  venture  or
     business.

          (e) From and after the  Restriction  Release Date,  Colonial  shall be
free to sell,  assign,  license or transfer the Colonial  Conduit or any portion
thereof to any third party whatsoever,  subject,  however,  to the provisions of
Section 8 below.

          (f) Prior to the  Restriction  Release  Date,  PTI will  maintain  the
Colonial Conduit in the same manner as applies to PTI's  maintenance  activities
on the Colonial Rights-of-Way under the terms of the Lease so that such Colonial
Conduit  is equal to or better in quality  and  capacity  as the  conduit in all
other  portions of the PTI  Telecommunications  Network.  After the  Restriction
Release  Date,  PTI  shall  have  no   responsibility  in  connection  with  the
maintenance of the Colonial Conduit.

          (g) From and after the date hereof,  Colonial will be responsible  for
all expenses  (other than those described in Subsection 7(f) above) of operating
the Colonial Conduit for the purposes  described  Subsections  7(d)(ii) and 7(e)
above,  as applicable.  Furthermore,  PTI shall not be responsible for any taxes
that are  attributable  to the  existence  and use of the  Colonial  Conduit  by
Colonial;  provided, however, that nothing herein shall be deemed to acknowledge
or imply that any taxes  necessarily will be imposed upon or attributable to the
existence and use of the Colonial Conduit by Colonial.

     8.   Disposition of the Colonial Conduit.

          (a) Subject to Subsection  8(d) below,  PTI and its  Affiliates  shall
have a right of first  refusal as to the  Colonial  Conduit as described in this
Subsection 8(a) (the "Right of First  Refusal").  During the period beginning on
the Restriction  Release Date and ending on the tenth (10th)  anniversary of the
Lease  Date,  in the event that  Colonial  desires  to  Dispose of the  Colonial
Conduit,  in whole or in part,  Colonial  shall  provide  written  notice to PTI
describing  the  terms  of  such   Disposition,   including  the  price  of  the
Disposition,  the term of any lease or license, and the identity of the proposed
transferee (the "Notice of Terms").  Within sixty (60) days thereafter,  PTI may
elect,  upon written notice to Colonial,  to accept the Disposition on the terms
described  in  Colonial's  Notice of Terms.  In the event  that PTI so elects to
accept such Notice of Terms,  Colonial shall Dispose of the Colonial  Conduit to
PTI on the terms set forth in such Notice of Terms or on such other terms as the
parties may mutually agree. If PTI fails to make such election within such sixty
(60) day period, PTI shall be deemed to have declined the



                                       -5-
<PAGE>

opportunity to exercise its Right-of-First Refusal as proposed by Colonial in
the Notice of Terms.

          (b) In the event that PTI  declines or is deemed to have  declined the
opportunity  to exercise its Right of First  Refusal,  Colonial shall be free to
Dispose of the  Colonial  Conduit to the  transferee  proposed  in the Notice of
Terms on terms  not  materially  different  than the terms so  described  in the
Notice of Terms, provided that if Colonial and the transferee fail to consummate
the Disposition within ninety (90) days of the date PTI declines or is deemed to
have  declined the Right of First  Refusal,  then PTI will again have a Right of
First Refusal as to the portion of the Colonial Conduit  described in the Notice
of Terms.

          (c) Provided  Colonial  complies  with the foregoing  provisions,  the
consummation  of any  Disposition  of a portion  of the  Colonial  Conduit  will
extinguish  PTI's  Right  of  First  Refusal  as to  such  portion,  unless  the
Disposition  is for a period that  terminates  prior to the tenth  (10th) of the
Lease Date, in which event, upon expiration of such Disposition,  PTI will again
have a Right of First  Refusal  as to such  portion  on the  terms  set forth in
Subsection 8(a) above.

          (d) The  foregoing  Right of First  Refusal  shall  apply  only to the
extent that the Colonial  Conduit or any applicable  portion thereof is still in
the state in which it was received by Colonial (e.g., if fibers were provided to
Colonial in "dark" condition,  then the Right of First Refusal will not apply if
such fibers are in a "lit" condition at the time of proposed Disposition; and if
Colonial  receives a Conduit and later  populates  the Conduit  with fiber,  the
Right of First Refusal will not apply to such fibers).

     9. Confidentiality. The parties hereto shall keep confidential all terms of
this Agreement, except to the extent that disclosure thereof is required by law,
agreed by the parties in writing.  In the event  either party hereto is required
to disclose any terms of this  Agreement  pursuant to  applicable  law, at least
three (3) days prior to disclosing the same (or such shorter period permitted by
law),  such party  shall  notify the other  party  hereto in writing and provide
copies of the terms that the party  intends to  disclose.  The  language  of the
press release  announcing this transaction shall be mutually agreed upon between
the parties hereto.  The parties  acknowledge that the transaction  contemplated
herein  is part of a larger  transaction  in which  certain  other  parties  are
contemplating  contribution  of  right  of way to PTI  in  exchange  for  equity
interests in PTI and that  disclosure of certain terms of this Agreement to such
parties  may  be  necessary  or  appropriate  in  connection   with  the  larger
transaction. PTI shall be permitted to make such disclosures,  provided that PTI
limits such  disclosures  to the extent  reasonably  necessary to consummate the
larger transaction.

     10.  Assignment.

          (a) Neither this  Agreement,  nor any of the rights  granted to PTI by
the terms of this Agreement,  shall be assigned by PTI without  Colonial's prior
written consent, which shall not be unreasonably withheld,  except that PTI may,
upon prior notice to Colonial, but without the necessity of obtaining Colonial's
prior  consent,  assign this  Agreement to an Affiliate of PTI.  Nothing  herein
shall prohibit PTI from involving customers or strategic or co-development



                                       -6-
<PAGE>

partners in  development of the  Telecommunications  Systems within the Colonial
Rights-of-Way  on  such  terms  as PTI may  determine  in its  sole  discretion,
provided  that:  (i) all such  activities  are conducted in accordance  with the
terms of this Agreement and the Lease,  (ii) PTI shall not be released from, and
shall remain fully liable to Colonial for all of its covenants,  liabilities and
obligations  hereunder  and under the Lease and for the acts or omissions of all
parties  claiming by,  through or under PTI within any  Colonial  Rights-of-Way;
(iii) PTI shall  remain the sole point of contact  with  Colonial;  and (iv) all
activities  of parties  claiming  by,  through or under PTI within any  Colonial
Rights-of-Way are conducted under PTI's supervision.

          (b)  Colonial  shall  have the right to assign,  license or  otherwise
transfer  this  Agreement  and/or  its  rights or  obligations  hereunder  as it
pertains to a particular  Segment (or discrete  portion thereof) of the Colonial
Rights-of-Way  in connection with a sale or other transfer of Colonial's  rights
within such Segment (or discrete portion thereof) to any third party;  provided,
however, that any such assignment or transfer shall be made subject to the terms
and  conditions of this  Agreement  and any such  assignee or  transferee  shall
continue to perform Colonial's obligations to PTI under the terms and conditions
of this  Agreement.  In addition to  Colonial's  rights  under  Subsection  7(c)
hereof,  Colonial also shall have the right, without PTI's consent, to assign or
otherwise  transfer this Agreement  and/or its rights or obligations  hereunder:
(i) to any entity that, indirectly or directly, is controlled by, controls or is
under common control with Colonial,  or to any entity into which Colonial may be
merged or consolidated or which purchases all or substantially all of the assets
of Colonial;  or (ii) as  collateral in  connection  with any  financings by any
lender.

     11. Notices. All notices,  demands,  requests,  or other writings delivered
pursuant to this  Agreement  shall be in writing and may be given  personally or
may be delivered by depositing  the same in the United  States mail,  certified,
registered or equivalent,  return receipt requested,  postage prepaid,  properly
addressed, and sent to the following addresses:

              If to Colonial:     Colonial Pipeline Company
                                  945 E. Paces Ferry Rd., N.E.
                                  Atlanta, Georgia  30326-0855
                                  Attention:  General Counsel
                                  Fax:  404-841-2315

              with a copy to:     Arnall Golden & Gregory, LLP
                                  1201 West Peachtree Street, Suite 2800
                                  Atlanta, Georgia 30309-2450
                                  Attention: Donald I. Hackney, Jr., Esquire
                                Fax: 404-873-8639

              If to PTI:          Pathnet Telecommunications, Inc.
                                  1661 Gateway Boulevard
                                  Richardson, Texas  75080
                                  Attention:  Senior Vice President, Engineering
                                  Fax:  972-231-9728



                                       -7-
<PAGE>

              with a copy to:     Pathnet Telecommunications, Inc.
                                  11720 Sunrise Valley Drive
                                  Reston, Virginia 20191
                                  Attention:  General Counsel
                                  Fax:  703-390-8127

or to such other  address  as either  party may from time to time  designate  by
written notice to the other party.  Notices given by mail as aforesaid  shall be
deemed  received and  effective  as of the first  Business  Day  following  such
dispatch; provided, however, that if any such notice or other communication also
shall be sent by telecopy or fax  machine,  such notice shall be deemed given at
the time and on the date of machine  transmittal if the sending party receives a
written send  verification  on its machines and forwards a copy thereof with its
mailed or courier delivered notice or communication.

     12.  Force  Majeure.  Any  failure or delay in the  performance  by a party
hereto  of its  obligations  hereunder  shall  not  constitute  a breach of this
Agreement,  and  each  party's  obligations  to  complete  actions  by  specific
deadlines  shall be delayed,  to the extent  attributable  to causes beyond that
party's control, including, but not limited to, acts of God, governmental action
(whether in its  sovereign  or  contractual  capacity),  fire,  flood,  or other
catastrophe, national emergency, insurrection, riot, and war.

     13.  Severability.  If any provision of this  Agreement or the  application
thereof,  shall be held invalid,  illegal or  unenforceable in whole or in part,
the  remainder  of this  Agreement  and the  application  thereof  shall  not be
affected,  and shall be enforceable to the full extent permitted by law, and the
portion  hereof  found to be invalid  shall be enforced  to the  fullest  extent
permitted by law,  and, if  possible,  shall be reformed to carry out as much as
possible the intent of the parties as expressed herein.

     14. Amendment.  This Agreement may be amended only by a written  instrument
executed  by both  parties  hereto.  No  failure  to  exercise  and no  delay in
exercising,  on the  part of a party  hereto,  any  right,  power  or  privilege
hereunder shall operate as a waiver of any other provision of this Agreement, or
as a waiver of that right,  power or  privilege  either  before,  or after,  the
period of waiver.

     15. Entire  Agreement.  This  Agreement and all Exhibits  attached  hereto,
constitute  the entire  agreement  of the  parties  hereto  with  respect to the
subject  matters  hereof,   and  supersede  any  and  all  prior   negotiations,
understandings and agreements, whether oral or written with respect hereto.

     16.  Applicable Law. This Agreement shall be interpreted and enforced in
accordance with the laws of the State of Georgia, without regard to the
conflicts of laws provisions thereof.

     17.  Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original, but all of which
together shall constitute but one and the same instrument.



                                       -8-
<PAGE>

     IN WITNESS  WHEREOF,  authorized  representatives  of Colonial and PTI have
executed this Agreement as of the date first set forth herein.



COLONIAL PIPELINE COMPANY               PATHNET TELECOMMUNICATIONS, INC.



By:   /s/ D.L. Lemmon                   By:  /s/ Richard Jalkut
     ----------------------------            -----------------------------
     Name:D.L. Lemmon                        Name:
     Title: President and                    Title:  CEO
               Chief Executive Officer






                                       -9-
<PAGE>
                                    EXHIBIT A

                                  FORM OF LEASE

                              (SEE EXHIBIT 10.7)
<PAGE>
                                    EXHIBIT B

                              DESIGNATED AFFILIATES


1. Specified Companies.

   Capline Pipeline Company
   Chicap Pipeline
   Cushing-Chicago Pipeline
   Dixie Pipeline Company
   Explorer Pipeline Company
   Inland Corporation
   Kaw Pipeline
   Olympic Pipeline
   West Shore Pipe Line (Including Badger)
   West Texas Gulf Pipe Line
   Wolverine Pipe Line
   Yellowstone Pipe Line

2. Affiliates of Colonial's Owners.

   All pipeline  companies in which 75% or more of the outstanding voting equity
interests  therein  are  held by one or more  entities  which  are  100%  owned,
directly or indirectly,  by any one or more of: (i) the following current owners
of Colonial's outstanding common stock (the "Colonial Owners");  (ii) any entity
which is the 100% owner,  directly or indirectly,  of such Colonial  Owners;  or
(iii) any entity  that is 100%  owned,  directly  or  indirectly,  by any of the
entities  included in clause (ii). For purposes of this paragraph,  the Colonial
Owners shall consist of:

   Atlantic Richfield Company (ARCO Pipeline) Amoco Pipeline Holding Company (BP
   Amoco  Pipeline) CITGO Pipeline  Investment  Company Conoco Pipe Line Company
   Koch Petroleum  Corporation Marathon Oil Company (Marathon Ashland Pipe Line,
   LLC) Mobil Pipe Line  Company  Phillips  Petroleum  International  Investment
   Company
   Texaco Trading and Transporation Inc. (Equilon Pipeline Company, LLC)
   Union Oil Company of California




                                                                    EXHIBIT 10.7


                                OPTION AGREEMENT


        This  Option  Agreement  is made  as of  _______________,  1999,  by and
between  Pathnet   Telecommunications,   Inc.,  a  Delaware   corporation   (the
"Company"),  and Colonial Pipeline Company, a Delaware and Virginia  corporation
("Colonial").

                              W I T N E S S E T H:

        WHEREAS,  on November __,  1999,  the parties  hereto  entered into that
certain Contribution Agreement (the "Contribution  Agreement") pursuant to which
Colonial has agreed to contribute to the Company cash and certain  property,  on
the terms and conditions described therein; and

        WHEREAS, in consideration for such contributions, the Company has agreed
to issue to  Colonial  certain  shares  of the  Company's  Series D  Convertible
Preferred  Stock,  par value $0.01 per share  ("Series D  Preferred  Stock") and
certain shares of the Company's Series E Convertible  Preferred Stock, par value
$0.01 per share ("Series E Preferred Stock"); and

        WHEREAS,  pursuant to the Contribution  Agreement,  the Company has also
agreed  to grant (a) an option to  purchase  additional  shares of its  Series E
Convertible  Preferred  Stock, to be exercised by Colonial (with the approval of
the Company if above the level  specified  herein) or to be assigned by Colonial
to certain Designated  Entities (as defined below) and (b) an option to purchase
shares of its common  stock (the  "Common  Stock") to  Colonial  if the  Company
pursues an Initial Public Offering (as defined below),  subject to the terms and
conditions set forth herein.

        NOW THEREFORE, in consideration of the mutual covenants contained herein
and other good and valuable consideration,  the receipt and sufficiency of which
are hereby acknowledged, the parties hereby agree as follows:

        1.      Grant of Options.

                (a)  In   consideration   of  $1,000,000  paid  by  Colonial  by
electronic  wire transfer to the Company upon execution of this  Agreement,  the
Company  hereby  grants to Colonial the right and option (the  "Preferred  Stock
Option")  to  purchase  from  the  Company  all or any part of an  aggregate  of
1,593,082  shares of Series E Preferred  Stock,  subject  to, and in  accordance
with,  the terms and  conditions  set forth in this  Agreement.  Subject  to the
provisions of Section 6, Colonial may assign the Preferred Stock Option in whole
or in part to one or more of the  entities  listed on Exhibit B attached  hereto
and incorporated  herein (the "Designated  Entities" and, to the extent Colonial
so assigns a portion of the Preferred Stock Option to a Designated Entity,  such
Designated Entity is sometimes referred to herein as a "Permitted Purchaser") by
providing  written notice to the Company of the name and address of the assignee
and the number of shares subject to the Preferred  Stock Option assigned to such
assignee (the  "Assigned  Option  Shares").  To the extent the  Preferred  Stock
Option  is  exercised  by  Colonial  for more  than  455,166  shares of Series E
Preferred  Stock,  the exercise  with respect to shares in excess of that amount
shall


<PAGE>

require the prior written  consent of the Company,  which may be withheld in the
Company's  sole  discretion.  Any  assignment  to, or exercise  by, a Designated
Entity shall not require the prior written consent of the Company. The grant may
be exercised in whole or in part, but in no event shall the aggregate  number of
shares issued to Colonial and the Designated  Entities  pursuant to the exercise
of the Preferred Stock Option exceed such 1,593,082 shares of Series E Preferred
Stock (subject to adjustment as provided herein).

                (b) For value  received,  the Company hereby grants Colonial the
right and option (the "Common Stock  Option") to purchase from the Company up to
a whole number of shares of Common Stock equal to ten percent (10%) of the total
number of shares of Common Stock  actually sold in the Company's  Initial Public
Offering  (excluding  any shares  issuable upon  exercise of any  over-allotment
option granted to the underwriters of the Initial Public Offering),  subject to,
and in accordance with, the terms and conditions set forth in this Agreement. As
used herein,  "Initial  Public  Offering" means the closing of a firm commitment
underwritten   initial  public  offering  for  cash  pursuant  to  an  effective
registration  statement  under  the  Securities  Act of 1933,  as  amended  (the
"Securities  Act"),  and the rules and regulations  promulgated  thereunder from
time to time,  covering the offer and sale of the Company's  Common Stock to the
public. Any shares of Common Stock acquired by Colonial pursuant to this Section
1(b) shall be subject to the registration rights granted to Colonial pursuant to
the  Stockholders  Agreement of even date herewith among the Company and certain
of its stockholders (the "Stockholders Agreement").

        2.      Term of Options.

                (a) The Preferred Stock Option shall be exercisable, in whole or
in part,  during the term  commencing on the date hereof and ending at 5:00 p.m.
on the date (the "Expiration  Date") that is the earlier of (i) the date that is
the later to occur of (1) the 120th day after the  Agreement  Date (as such term
is  defined  in the  Contribution  Agreement),  and (2) the 15th day  after  the
Initial Closing Date (as such term is defined in the Contribution Agreement); or
(ii) 15 days after the filing by the Company of a registration  statement  under
the Securities Act, for an Initial Public Offering;  provided,  however, that on
and  after  the date  that is the  later to occur of (A) the 90th day  after the
Agreement  Date,  and (B) the 15th day  after  the  Initial  Closing  Date,  the
Preferred  Stock  Option  shall be  exercisable  solely in  connection  with the
concurrent  execution  by and  between  the  Company  and such of the  Permitted
Purchasers as shall seek to exercise such  Preferred  Stock Option of a mutually
acceptable agreement providing for the purchase, use, lease or other acquisition
by the  Company of  telecommunications  network  right-of-way  rights  from such
Permitted Purchasers,  on such terms as the Company and such Permitted Purchaser
or Permitted Purchasers may agree.

                (b)     Colonial may exercise the Common Stock Option solely in
connection with the Company's Initial Public Offering.

        3.      Exercise Price.

                (a) The  price  at  which  the  Preferred  Stock  Option  may be
exercised (the "Preferred Exercise Price") shall be $21.97 per share of Series E
Preferred Stock, as adjusted from time to time pursuant to Section 12 hereof.



                                       -2-
<PAGE>

                (b) The price at which the Common  Stock Option may be exercised
(the "Common Exercise Price") shall be ninety percent (90%) of the initial price
per share to the  public of the Common  Stock  being  offered  in the  Company's
Initial Public Offering,  as reflected on the cover page of the final prospectus
filed with the Securities and Exchange Commission pursuant to Rule 424(b).

        4.      Exercise of Options.

                (a) The  purchase  rights  represented  by the  Preferred  Stock
Option are  exercisable  solely by  Colonial  or, upon  assignment,  one or more
Permitted  Purchasers  at any  time up to the  Expiration  Date for (i) all or a
portion of the shares of Series E Preferred  Stock specified in Section 1(a), if
exercised  by  Colonial,  or (ii) all or a portion  of its  respective  Assigned
Option Shares, if exercised by a Permitted Purchaser;  provided,  however,  that
the prior written  consent of the Company,  which consent may be withheld in the
Company's  sole  discretion,  shall be required  with respect to the exercise by
Colonial in its own name and on its own behalf of options  with  respect to more
than 455,166 Series E Preferred  Shares. To exercise the Preferred Stock Option,
each  Permitted  Purchaser  (or  Colonial,  as the case may be,  with the  prior
written consent of the Company in the Company's sole  discretion)  shall deliver
written  notice  thereof  (the  "Exercise  Notice")  to the  Company in the form
attached  hereto as Exhibit A duly  completed  and  executed  by such  Permitted
Purchaser (or Colonial,  as the case may be). Colonial or a Permitted  Purchaser
that  exercises its option as described in this Section 4(a) (and,  with respect
to  Colonial,  receives the prior  written  consent of the Company) is sometimes
referred to as a "Purchaser."

                (b) The purchase  rights  represented by the Common Stock Option
are  exercisable  by Colonial,  in whole or in part (and Colonial may specify in
such exercise  notice,  in lieu of or in addition to a percentage  of shares,  a
maximum  aggregate amount of its investment,  from which its percentage shall be
derived),  in connection with an Initial Public  Offering,  by written notice by
Colonial delivered to the Company not less than 10 days prior to the filing of a
registration  statement  by the  Company in  connection  with an Initial  Public
Offering  setting  forth any  maximum  aggregate  investment  amount as to which
Colonial  is  exercising  its  Common  Stock  Option,  and,  subject to any such
maximum,  Colonial's  desired  number of shares in respect of which  Colonial is
exercising its Common Stock Option. The Company shall notify Colonial in writing
at least 30 days prior to the filing of a registration  statement for an Initial
Public  Offering (and shall advise  Colonial as promptly as  practicable  of any
delay in the expected date for filing).

        5.      Closing of the Purchase.

                (a) The  closing of any  purchase  of Series E  Preferred  Stock
pursuant  to exercise  of the  Preferred  Stock  Option  (the  "Preferred  Stock
Closing") shall be held at the offices of the Company on a date agreed to by the
Company  and the  Purchaser,  but not later  than  thirty  (30)  days  following
delivery of the Exercise Notice.

                (b)     The closing of any purchase of Common Stock  pursuant to
                        exercise of the Common Stock  Option (the "Common  Stock
                        Closing") shall be held at the offices of the Company on
                        or as  soon  as  reasonably  practicable  following  the
                        closing date of the Initial  Public  Offering in respect
                        of which the option was so exercised.

                (c)     At the Preferred Stock Closing:



                                       -3-
<PAGE>

                (i) The  Company  shall  deliver to each  Purchaser  one or more
certificates representing the shares of Series E Preferred Stock to be purchased
by such Purchaser;

                (ii)  Each  Purchaser  shall  deliver  to the  Company  a signed
certificate, dated as of the date of the Closing as described in Section 7;

                (iii) Each Purchaser and the Company shall execute and deliver a
written  agreement,  whereby the Purchaser  shall agree to become a party to and
bound by the terms of the Stockholders  Agreement and the Company shall grant to
such  Purchaser  the  rights and  benefits  of a  "Stockholder"  as such term is
defined in the Stockholders Agreement; and

                (iv)  Payment of the  purchase  price for the Series E Preferred
Stock  shall  be made by wire  transfer  of  immediately  available  funds to an
account designated by the Company in an amount equal to (A) the number of shares
of Series E Preferred Stock  specified by the Purchaser in its Exercise  Notice,
multiplied by (B) the Preferred Exercise Price.

        (d)     At the Common Stock Closing:

                (i)  The  Company   shall   deliver  to  Colonial  one  or  more
certificates representing the shares of Common Stock to be purchased pursuant to
exercise of the Common Stock Option; and

                (ii) Payment of the purchase price for the Common Stock shall be
made by wire transfer of immediately available funds to an account designated by
the  Company  in an amount  equal to (A) the  number  of shares of Common  Stock
specified  by  Colonial  in its  notice  delivered  pursuant  to  Section  4(b),
multiplied by (B) the Common Exercise Price.

        6.  Transferability.  Colonial  shall not assign,  hypothecate,  donate,
encumber,  transfer  or  otherwise  dispose  of any  interest  in the  Series  E
Preferred Stock or Common Stock of the Company,  and shall not assign all or any
portion of the Preferred Stock Option,  except in compliance with the provisions
herein,  the Stockholders  Agreement,  and applicable  securities laws.  Without
limitation of the foregoing, Colonial shall not assign all or any portion of the
Preferred Stock Option except (i) to a Designated  Entity that agrees in writing
to be bound by the  terms  of this  Option  Agreement  in the same  manner  that
Colonial is bound (including,  without limitation, this Section 6, but excluding
the restrictions  upon Colonial's direct exercise of the Preferred Stock Option,
which apply only to Colonial and any successor entity thereto),  and (ii) on the
condition that Colonial  provides to the Company an opinion of counsel,  in form
and substance to the reasonable  satisfaction of the Company, to the effect that
such assignment and the issuance of any Series E Preferred Stock or Common Stock
upon  exercise of the  Preferred  Stock Option by the assignee  will not require
registration  of  such  securities  under  the  Securities  Act of  1933  or any
applicable state securities law.

        7.      Representations and Warranties.



                                       -4-
<PAGE>

                (a) At the Preferred Stock Closing, as a condition thereto, each
Purchaser shall deliver to the Company a certificate representing and warranting
the following in connection  with the acquisition of Series E Preferred Stock by
such Purchaser pursuant to the exercise of the Preferred Stock Option:

                        (i)     The Purchaser is aware of the Company's business
affairs and financial condition and has acquired sufficient information from the
Company  about the Company to reach an informed  and  knowledgeable  decision to
acquire the Series E Preferred  Stock.  The Purchaser is purchasing the Series E
Preferred Stock for investment for its own account only and not as a nominee for
any  party  and not  with a view to,  or for  resale  in  connection  with,  any
"distribution"  thereof  within the  meaning of the  Securities  Act  (except as
contemplated by Section 10).

                        (ii)    The Purchaser understands that Series E
Preferred Stock has not been registered  under the Securities Act by reason of a
specific exemption therefrom,  which exemption depends upon, among other things,
the bona fide nature of such Purchaser's investment intent as expressed herein.

                        (iii)   The Purchaser further understands that the
Series E Preferred  Stock must be held  indefinitely  unless it is  subsequently
registered  under the Securities Act or an exemption from such  registration  is
available.  The Purchaser further  acknowledges and understands that the Company
is under no  obligation  to register the Series E Preferred  Stock except as set
forth  in  the  Stockholders  Agreement.  The  Purchaser  understands  that  the
certificate  evidencing  the Series E  Preferred  Stock  (and any  Common  Stock
received upon  conversion  thereof) will be imprinted with the following  legend
which prohibits its transfer unless it is registered or such registration is not
required in the opinion of counsel for the Company.

                THE  SECURITIES   REPRESENTED  HEREBY  HAVE  BEEN  ACQUIRED  FOR
                INVESTMENT AND HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT
                OF 1933.  SUCH  SECURITIES MAY NOT BE SOLD OR TRANSFERRED IN THE
                ABSENCE OF SUCH  REGISTRATION  OR AN EXEMPTION  THEREFROM  UNDER
                SAID ACT. COPIES OF THE AGREEMENT COVERING THE PURCHASE OF THESE
                SECURITIES  AND  RESTRICTING  THEIR  TRANSFER  OR  SALE  MAY  BE
                OBTAINED AT NO COST BY WRITTEN  REQUEST MADE TO THE SECRETARY OF
                THE COMPANY AT THE PRINCIPAL EXECUTIVE OFFICES OF THE COMPANY.

                (b) The Company  hereby  represents and warrants to Colonial and
each Purchaser,  as of the date hereof and as of the date of the Preferred Stock
Closing, as follows:

                        (i)     The Company has all requisite corporate power
and  authority  to execute and  deliver  this  Agreement,  to issue and sell the
Series E Preferred Stock and to carry out the provisions of this Agreement.



                                       -5-
<PAGE>

                        (ii)    All corporate action on the part of the Company,
its officers, directors and stockholders necessary for the authorization of this
Agreement,  the  performance  of all  obligations  of the Company  hereunder and
thereunder at the Preferred Stock Closing and the authorization,  sale, issuance
and  delivery  of the Series E  Preferred  Stock has been taken or will be taken
prior to the Preferred  Stock  Closing.  Upon its  execution and delivery,  this
Agreement will be a valid and binding obligation of the Company,  enforceable in
accordance with its terms.

                        (iii)   When issued in compliance with the provisions of
this Agreement,  the Series E Preferred Stock will be validly issued, fully paid
and  nonassessable,  and will be free of any  liens or  encumbrances;  provided,
however,  that the Series E Preferred  Stock may be subject to  restrictions  on
transfer  under state and/or federal  securities  laws as set forth herein or as
otherwise required by such laws at the time a transfer is proposed.

                (c) The Company hereby  represents and warrants to Colonial,  as
of the date hereof and as of the date of the Common Stock Closing, as follows:

                        (i)     The Company has all requisite corporate power
and  authority  to execute and  deliver  this  Agreement,  to issue and sell the
Common Stock and to carry out the provisions of this Agreement.

                        (ii)    All corporate action on the part of the Company,
its officers, directors and stockholders necessary for the authorization of this
Agreement,  the  performance  of all  obligations  of the Company  hereunder and
thereunder at the Common Stock Closing and the authorization, sale, issuance and
delivery of the Common Stock has been taken or will be taken prior to the Common
Stock Closing.  Upon its execution and delivery,  this Agreement will be a valid
and binding obligation of the Company, enforceable in accordance with its terms.

                        (iii)   When issued in compliance with the provisions of
this  Agreement,  the  Common  Stock  will be  validly  issued,  fully  paid and
nonassessable, and will be free of any liens or encumbrances; provided, however,
that the Common  Stock may be subject to  restrictions  on transfer  under state
and/or federal  securities laws as set forth herein or as otherwise  required by
such laws at the time a transfer is proposed.

        8.      Conditions to Obligations of the Company.

                (a) The  Company's  obligation  to issue  and sell the  Series E
Preferred Stock at the Preferred  Stock Closing is subject to the  satisfaction,
on or prior to such Preferred Stock Closing, of the following conditions:

                        (i)     The representations and warranties in Section
7(a)  shall be true and  correct  in all  material  respects  at the date of the
Preferred Stock Closing.

                        (ii)    The Purchaser shall have performed and complied
with all agreements and conditions  required to be performed or complied with by
Purchaser under this Agreement on or before the Preferred Stock Closing.



                                       -6-
<PAGE>

                        (iii)   As of the Preferred Stock Closing, the sale and
issuance of the Series E Preferred Stock shall be legally  permitted by all laws
and regulations to which any Purchaser and the Company are subject.

                        (iv)    The Purchaser shall have executed and delivered
the Stockholders Agreement as provided herein.

                (b) The Company's  obligation to issue and sell the Common Stock
at the Common Stock Closing is subject to the satisfaction,  on or prior to such
Common Stock Closing, of the following conditions:

                        (i)     Colonial shall have performed and complied with
all  agreements  and  conditions  required to be performed  or complied  with by
Colonial  under this Agreement and the  Contribution  Agreement on or before the
Common Stock Closing.

                        (ii)    As of the Common Stock Closing, the sale and
issuance  of the  Common  Stock  shall  be  legally  permitted  by all  laws and
regulations to which Colonial and the Company are subject.

                        (iii)   A registration statement relating to the Initial
Public  Offering  shall have become  effective and no stop order  suspending the
effectiveness  thereof shall have been issued and no proceedings  therefor shall
be pending or threatened by the Securities and Exchange Commission.

        9. Rights of Stockholders.  With respect to the Series E Preferred Stock
and Common Stock subject to option hereunder, neither Colonial nor any Permitted
Purchaser shall be entitled to vote or receive dividends or be deemed the holder
of such  Series E Preferred  Stock or Common  Stock  until the  Preferred  Stock
Option or Common Stock Option shall have been exercised as provided  herein.  In
addition,  nothing contained herein be construed to confer upon Colonial nor any
Permitted Purchaser,  by virtue of their ownership of the Preferred Stock Option
or Common Stock Option, any of the rights of a stockholder of the Company or any
right to vote for the  election of  directors  or upon any matter  submitted  to
stockholders  at any  meeting  thereof,  or to give or  withhold  consent to any
corporate  action  (whether  upon  any  recapitalization,   issuance  of  stock,
reclassification  of stock,  change of par  value,  or change of stock to no par
value, consolidation,  merger, conveyance, or otherwise) or to receive notice of
meetings,  or to receive dividends or subscription rights or otherwise until the
Preferred  Stock Option or the Common Stock Option shall have been  exercised as
provided herein.

        10.     Consulting Agreement. Notwithstanding anything contained herein
                or in any certificate delivered hereunder or under the
                Contribution Agreement or any of the documents, instruments or
                agreements executed in connection with such Contribution
                Agreement, the Company acknowledges that certain of the
                Designated Entities have entered into, or may in the future
                enter into, Consulting Agreements with Colonial pursuant to
                which Colonial shall be entitled to receive from such Designated
                Entities certain consideration, which may include shares of



                                       -7-
<PAGE>

                the Company's Preferred Stock, upon the conditions specified in
                the Consulting Agreements.

        11.     Reservation of Stock.

                (a) The Company  covenants  that  during the term the  Preferred
        Stock  Option  is  exercisable,   the  Company  will  reserve  from  its
        authorized and unissued Series E Preferred Stock a sufficient  number of
        shares to provide for the issuance of Series E Preferred  Stock upon the
        exercise of the  Preferred  Stock Option (and shares of its Common Stock
        for issuance on conversion  of such Series E Preferred  Stock) and, from
        time to time,  will take all steps necessary to amend its Certificate of
        Incorporation  to  provide  sufficient  reserves  of  shares of Series E
        Preferred  Stock  issuable upon  exercise of the Preferred  Stock Option
        (and  shares of its Common  Stock for  issuance  on  conversion  of such
        Series E Preferred Stock). The Company further covenants that all shares
        that may be  issued  upon the  exercise  of  rights  represented  by the
        Preferred  Stock  Option or the Common  Stock  Option and payment of the
        Preferred  Exercise  Price or Common  Exercise  Price,  all as set forth
        herein, will be free from all taxes, liens and charges in respect of the
        issue  thereof  (other than taxes in respect of any  transfer  occurring
        contemporaneously or otherwise specified herein).

                (b) The Company  will use its best efforts to direct for sale to
Colonial in the Initial Public  Offering as many shares as Colonial may request,
subject to any  restrictions  imposed by the National  Association of Securities
Dealers and subject to the best advice of the underwriters of the Initial Public
Offering.

        12. Dilution.  In the event that prior to the delivery by the Company of
the shares of Series E Preferred  Stock in respect of which the Preferred  Stock
Option is granted, the outstanding shares of Series E Preferred Stock, including
any Common Stock into which the Series E Preferred  Stock shall be  convertible,
shall be changed in number or class or exchanged for a different  number or kind
of shares of stock or other  securities  of the  Company,  whether  by reason of
recapitalization,  reclassification, reorganization, combination, stock split or
reverse stock split,  or payment of a stock  dividend or other similar change in
capitalization,  the  number  and kind of  shares of  Series E  Preferred  Stock
subject to the Preferred Stock Option shall be adjusted in a manner set forth in
Section  5.3.4(e) and (f)(ii) of the  Certificate of  Incorporation  so that the
Preferred  Stock Option  shall  thereafter  represent  the right to acquire such
number and kind of securities as would have been issuable if the Preferred Stock
Option  had  been  exercised   immediately   prior  to  such   recapitalization,
reclassification,  reorganization,  combination,  stock  split or reverse  stock
split, or payment of a stock dividend or other similar change in capitalization.
For purposes of the foregoing, the "Certificate of Incorporation" shall mean the
Certificate  of  Incorporation  of the Company as amended  and/or  restated  and
effective  immediately  prior to the change in terms of the  Company's  Series E
Preferred Stock.

        13.  Series D Preferred  Stock.  The Company and one or more  Designated
Entities,  may, but are not required to, hereafter enter into agreements for the
issuance of stock of the Company in exchange for a contribution of rights-of-way
rights  from such  Designated  Entities.  In the event that the Company and such
Designated  Entities enter into such agreement,  Colonial and the Company hereby
agree that, between the date of this Option Agreement and the



                                       -8-
<PAGE>

Expiration  Date,  unless the  parties  otherwise  agree,  (a) the type of stock
delivered to such Designated  Entity shall be Series D Preferred  Stock, (b) the
purchase price per share for such Series D Preferred Stock shall be $21.97,  and
(c) the Company and the  Designated  Entity shall  execute and deliver a written
agreement  pursuant to which the  Designated  Entity shall become a party to and
bound by the terms of the  Stockholders  Agreement  such  that  such  Designated
Entity shall have the rights and benefits of a "Stockholder"  as such is defined
in the Stockholders Agreement.

        14.     Miscellaneous.

                (a)  Transfer and Similar  Taxes.  All stock,  stamp,  transfer,
registration or similar taxes or duties, if any,  resulting from the purchase of
Series E Preferred  Stock or Common Stock  pursuant to this  Agreement  shall be
paid by the Purchaser acquiring such shares.

                (b)     Authorized Signatories. The persons executing this
Agreement for and on behalf of Colonial and the Company each represent that they
have the requisite authority to bind the entities on whose behalf they are
signing.

                (c) Successors and Assigns. Except as provided in Sections 1 and
6, this  Agreement may not be assigned,  delegated or otherwise  transferred  by
either party without the written consent of the other party. Except as otherwise
expressly  provided  herein,  all  covenants  and  agreements  contained in this
Agreement  by or on behalf of the  parties  hereto  shall  bind and inure to the
benefit of the  respective  successors and assigns of the parties hereto whether
so expressed or not.

                (d)  Severability.  Whenever  possible,  each  provision of this
Agreement shall be interpreted in such manner as to be effective and valid under
applicable  law, but if any provision of this Agreement is held to be prohibited
by or invalid under  applicable law, such provision shall be ineffective only to
the extent of such prohibition or invalidity, without invalidating the remainder
of this Agreement.

                (e) Counterparts.  This Agreement may be executed simultaneously
in two or more counterparts, any one of which need not contain the signatures of
more than one party, but all such  counterparts  taken together shall constitute
one and the same Agreement.

                (f)     Descriptive Headings: Interpretation. The descriptive
headings of this Agreement are inserted for convenience only and do not
constitute a Section of this Agreement. The use of the word "including" in this
Agreement shall be by way of example rather than by limitation. Except as
otherwise provided herein, capitalized terms used herein without definition
shall have the meanings ascribed to them in the Contribution Agreement.

                (g) Governing Law. This Agreement  shall be governed by the laws
of the State of Delaware,  without  giving effect to its  principles or rules of
conflict of laws to the extent such  principles or rules would require or permit
the application of the laws of another jurisdiction.



                                       -9-
<PAGE>

                (h)     Amendment. No change or addition shall be made to this
Agreement except by a written agreement executed by Colonial and the Company.

                (i) Notices. All notices,  demands or other communications to be
given or delivered  under or by reason of the provisions of this Agreement shall
be in writing and shall be deemed to have been given when  delivered  personally
to the recipient,  sent to the recipient by reputable  express  courier  service
(charges  prepaid) or mailed to the recipient by certified or  registered  mail,
return receipt  requested and postage prepaid.  Such notices,  demands and other
communications  shall be sent to the  parties  hereto at the  address  indicated
below:

            If to Colonial:

            Colonial Pipeline Company
            945 East Paces Ferry Road, NE
            Atlanta, Georgia 30326-1125
            Attn:  General Counsel
            Fax:  404-841-2315

            With a copy to (which shall not constitute notice):

            Arnall Golden & Gregory, LLP
            2800 One Atlantic Center
            1201 West Peachtree Street
            Atlanta, Georgia 30309-3450
            Attn:  Donald I. Hackney, Jr., Esq.
            Fax:  404-873-8639

            If to a Permitted Purchaser:

            At the address provided by Colonial pursuant to Section 1(a) above

            If to the Company to:

            Pathnet Telecommunications, Inc.
            1015 31st Street, N.W.
            Washington, D.C.  20007
            Attn:  General Counsel
            Fax:  202-625-7369

            With a copy to (which shall not constitute notice):

            Covington & Burling
            1201 Pennsylvania Avenue., N.W.
            P.O. Box 7566
            Washington, D.C.  20044
            Attn:  Bruce S. Wilson, Esq.
            Fax:  202-662-6291



                                      -10-
<PAGE>

or to such  other  address  or to the  attention  of such  other  person  as the
recipient party has specified by prior written notice to the sending party.

                (j) Complete  Agreement.  This  Agreement  represents the entire
agreement  between Colonial and the Company covering  everything  agreed upon or
understood in this transaction and all other prior  agreements,  written or oral
are  merged  into  this  Agreement.  There  are no  oral  promises,  conditions,
representations,  understandings,  interpretations  or  terms  of  any  kind  as
conditions or inducements to the execution hereof in effect between the parties.







                            [SIGNATURE PAGES FOLLOW]






                                      -11-
<PAGE>


        IN WITNESS  WHEREOF,  the  parties  hereto  have  executed  this  Option
Agreement on the date first written above.

                                  PATHNET TELECOMMUNICATIONS, INC.
                                   /s/ Richard Jalkut
                                  ------------------------------------


                                  By:
                                     ---------------------------------
                                  Its: CEO
                                      --------------------------------

                                  COLONIAL PIPELINE COMPANY

                                  ------------------------------------


                                  By:/s/ D.L. Lemmon
                                     ---------------------------------
                                  Its: D.L. Lemmon, President and
                                      --------------------------------
                                        Chief Executive Officer






                                      -12-



                                                                    EXHIBIT 10.8


                       Positions of this exhibit have been
                        omitted and filed separately with
                     the Securities and Exchange Commission.
                         These positions are designated
                                  "[ * * * ]."



                             FIBER OPTIC ACCESS AND
                                LICENSE AGREEMENT

                               dated as of March 30, 2000

                                     between

                            CSX TRANSPORTATION, INC.
                     A VIRGINIA CORPORATION, FOR ITSELF AND
    AS OPERATOR FOR NEW YORK CENTRAL LINES LLC, A DELAWARE LIMITED LIABILITY
   COMPANY AND A WHOLLY-OWNED SUBSIDIARY OF CONSOLIDATED RAIL CORPORATION, A
                            PENNSYLVANIA CORPORATION

                                       and

                        PATHNET TELECOMMUNICATIONS, INC.,
                             a Delaware corporation


<PAGE>
                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
ARTICLE                                                                     PAGE
<S>       <C>                                                              <C>
   1.      Certain Definitions
   2.      License
   3.      Term
   4.      Exclusivity
   5.      Equity Consideration
   6.      Title Limits
   7.      Third Party Joint Facilities and Trackage Rights
   8.      Conduit (Innerduct); Fiber; and Capacity
   9.      Disclaimer
</TABLE>

<TABLE>
<CAPTION>
EXHIBIT SUMMARY
<S>                                    <C>
  Exhibit 1                             Form Build Supplement
  Exhibit 2                             Description of NYC and CSXT Corridor
  Exhibit 3                             Depiction of Radii Around Tier Cities
  Exhibit 4                             Designation of Tier Cities
  Exhibit 5                             Depiction of [* * *] and [* * *] Builds
  Exhibit 6                             Initial Designation of NYC Corridor
  Exhibit 7                             [* * *]
</TABLE>
<PAGE>



                    FIBER OPTIC ACCESS AND LICENSE AGREEMENT

     THIS FIBER OPTIC ACCESS AND LICENSE AGREEMENT (this "License Agreement") is
made as of March 30, 2000 ("Effective Date"), by and between CSX TRANSPORTATION,
INC., a Virginia corporation  ("CSXT"),  for itself and as operator for New York
Central  Lines LLC, a Delaware  limited  liability  company  ("NYC Lines") and a
wholly  owned  subsidiary  of  Consolidated  Rail  Corporation,  a  Pennsylvania
corporation (CSXT and NYC Lines,  collectively,  the "Railroad"),  whose mailing
address  is  500  Water  Street,   Jacksonville,   Florida  32202,  and  PATHNET
TELECOMMUNICATIONS,  INC., a Delaware  corporation  ("Pathnet"),  whose  mailing
address is 1015 31st Street, N.W., Washington, D.C. 20007.

                                R E C I T A L S:

      A. Railroad is the owner or operator of a continuous right-of way (by fee,
easement,  license,  operating agreement, joint use agreement or other interest)
within  certain  real  property  upon  which  it  operates  an  interstate  rail
transportation  system,  as shown on Railroad's  current System Map (hereinafter
referred to as the "Rail Corridor").

      B. Pursuant to the Contribution  Agreement and Stockholder Agreement being
executed in connection herewith, Pathnet desires to enter into an agreement with
Railroad to permit  Pathnet to  install,  market,  sell and/or  maintain a Fiber
Optic Communication System, including Conduit (Innerduct), Cable, Optical Fibers
and related equipment and structures,  along, in and on up to [ * * * ] miles of
Rail Corridor,  along Segments of the Rail Corridor to be selected in accordance
herewith.

     C. Pursuant to the Contribution  Agreement and Stockholder  Agreement being
executed  in  connection  herewith,  Railroad  is  willing to  transfer  certain
property  interests to Pathnet in exchange for stock in Pathnet,  provided  that
Pathnet  accepts a license to use the  selected  Segments  of the Rail  Corridor
subject to all of the terms and  conditions of this License  Agreements  and the
Right of Way Operating  Agreement being entered into by and between Railroad and
Pathnet  concurrently  herewith  (hereinafter,  the "Operating  Agreement"  and,
together  with this  License  Agreement,  the  "Agreements"),  which  Agreements
provide,  among other  things,  that (i) the license  granted  thereby  shall be
subject  to the  existing  rights and  interests  of other  parties,  including,
without  limitation,  [ * * * ]  and  [ * * * ],  and  (ii)  Railroad  makes  no
representation or warranty with respect to its right, title or interest, if any,
in and to any  portion  of the Rail  Corridor  or its right to grant any type of
license or other right for any party,  including  Pathnet,  to use or occupy the
same.

      NOW,  THEREFORE,  for good and  valuable  consideration,  the  receipt and
adequacy of which are hereby acknowledged,  Railroad and Pathnet hereby agree as
follows:

                                        2
<PAGE>

1.    CERTAIN DEFINITIONS.

1.1 General  Interpretive  Principles.  For purposes of this License  Agreement,
except as otherwise expressly provided or unless the context otherwise requires,
(i) the terms defined in this Section have the meanings assigned to them in this
Section  and  include  the  plural as well as the  singular,  and the use of any
gender in this License  Agreement  shall be deemed to include the other  gender;
(ii) the word "including" means  "including,  but not limited to," and (iii) the
article,  section and  paragraph  headings  in this  License  Agreement  are for
convenience  only and are not intended to describe,  interpret,  define or limit
the scope, extent, or intent of any of the provisions of this License Agreement.

      1.2 Incorporation of Recitals. The Recitals set forth above are
incorporated herein by this reference.

      1.3 Definitions.  As used in this License  Agreement,  the following terms
shall  have  the  following  respective  meanings  (unless  otherwise  expressly
provided):

      "Affiliate"  shall mean any Person that,  directly or indirectly,  through
one or more  intermediaries,  controls or is  controlled  by, or is under common
control with, another Person.  The term "control," for this purpose,  shall mean
the ability,  whether by the  ownership of shares or other equity  interest,  by
contract or otherwise,  to elect a majority of the  directors of a  corporation,
independently  to select the managing  partner of a partnership  or the managing
member  of  a  limited  liability  company,  or  otherwise  to  have  the  power
independently  to remove and then select a majority of those Persons  exercising
governing  authority over an entity.  Control shall be conclusively  presumed in
the case of the direct or indirect  ownership of fifty  percent (50%) or more of
the equity interests in an entity.

      "Agreements" shall be as defined in Recital C.

      "Broadform Telecommunications Rights" shall mean, exclusive of the Limited
Telecommunications  Rights granted  hereunder,  the right of owners of and other
parties  with  interests  in the land  underlying  the Rail  Corridor to license
generally,  for  telecommunications  purposes,  any  and  all  portions  of Rail
Corridor.

      "Build Supplement" shall have the meaning set forth in Section 2.6 below

      "Cable"  shall  mean a single  cable  containing  Optical  Fiber,  and any
support material and protective  casing,  capable of transmitting  data or voice
communications in a Fiber Optic Communication System.

      "Conduit  (Innerduct)" shall mean a single duct or pipe, not exceeding two
inches (2") inside  diameter (or similar  cross  sectional  equivalent),  except
where  specifically  required or approved by  Railroad,  suitable  for housing a
Fiber Optic Cable.

      "Construction Exclusivity" shall have the meaning set forth in Section 4.2
below.

      "Construction Plans" shall mean the drawings, plans and specifications for
the construction  and  installation of Pathnet's System and Facilities,  showing
the proposed  location of all  Pathnet's  System and  Facilities,  in sufficient
detail,  with distance shown from nearest track, with separate detailed drawings
of all junction, Repeater (Regen) Sites, bridge and tunnel occupancies,  showing
depth of installation, details and methods

                                        3
<PAGE>

of the proposed construction, with numbers and size of Conduit(s) (Innerduct(s))
to be placed,  including Optical Fiber count and total mileage for each Segment.
Construction  Plans  shall  clearly  note  Railroad  Valuation  Map  references,
Railroad  Survey  Station and Milepost  references  for all beginning and ending
points and all alignment  transition points.  Each set of Construction Plans for
each Segment shall have an overview map showing all of the required information.

      "Construction Schedule" shall have the meaning set forth in Section 2.6

below

      "Contribution  Agreement" shall mean that certain  Contribution  Agreement
dated as of  _____________,  1999 by and  between,  among  others,  Railroad and
Pathnet.

      "CSX Conduits" shall have the meaning set forth in Section 8.5 below.

      "CSXT Corridor" shall mean, subject to Section 2.1 of this Agreement,  all
of the Rail Corridor  exclusive of the NYC Corridor,  as described in Exhibit 2,
attached hereto and incorporated herein.

      "Designated  Rail  Corridor"  shall  mean a Segment  of the Rail  Corridor
selected by Pathnet and approved by Railroad in accordance with the terms of the
Agreements.

      "Designation  Period"  shall have the  meaning  set forth in  Section  2.6
below.

      "Exclusivity  Period"  shall have the  meaning  set forth in  Section  4.2
below.

      "Facilities",  when applied to property of or installed by Pathnet,  shall
mean Conduit (Innerduct), Cable, carrier pipes, Pathnet wires and poles, Optical
Fibers,  junctions,  Repeaters (Regens),  Handholds,  terminals,  power sources,
fault alarm system(s),  emergency equipment storage shelters,  attachments,  and
all other structures and articles of personal property connected with, necessary
for,  appurtenant  to, or useful to the  installation,  operation,  maintenance,
repair, re-installation,  replacement,  relocation or removal of Pathnet's Fiber
Optic Communication System.

      "Fiber Optic" or "Optical Fiber" shall mean a strand of optical  waveguide
permitting the transmission of communications signals.

      "Fiber  Optic  Communication  System"  or  "System"  shall mean the system
utilizing Optical Fiber as the medium for  communications and transmission to be
installed  by  Pathnet  in the  Designated  Rail  Corridor,  which  may  contain
Conduit(s)  (Innerducts(s)),  Cable(s)  and Optical  Fiber(s).  Such terms shall
include all Conduit  (Innerduct),  Cable,  Optical Fiber,  Handholds,  manholes,
marker tape, signs, coupler,  structure  attachment,  pull rope, other necessary
ancillary hardware,  and bridge, tunnel and trestle attachments,  and shall also
include  such  communications  technologies  as may  hereafter  evolve  from  or
relating to Optical Fiber but which utilize  Pathnet's  Facilities and/or System
as initially installed or as thereafter modified pursuant to the Agreements.

      "Handholds"  shall  include  Cable loops,  or boxes or vaults placed in or
above ground at junctions,  Repeaters (Regens) or at areas of Cable splicing and
connection, for storage of slack Cable.

      "Interest Notice" shall have the meaning set forth in Section 4.2 below.

      "License" shall have the meaning set forth in Section 2.1 below.

      "Limited   Telecommunications   Rights"  shall  mean  Pathnet's  right  to
construct,  install,  operate,  repair and maintain the Facilities and System as
more particularly  described in, and subject to the terms and conditions of, the
Agreements,  including,  without limitation, those contained in Article 6 of the
License Agreement.

      "Negotiation  Exclusivity" shall have the meaning set forth in Section 4.2
below.

      "NYC  Corridor"  shall  mean that  certain  portion  of the Rail  Corridor
operated by CSXT pursuant to that certain  Operating  Agreement dated as of June
1, 1999 by and

                                        4
<PAGE>

between NYC Lines, as owner,  and CSXT, as operator,  as described in Exhibit 2,
attached hereto and incorporated herein.

      "Operating Agreement" shall have the meaning set forth in Recital C above.

      "Optical Fiber" shall mean Fiber Optic.

      "Person"  shall mean any  individual,  association,  partnership,  limited
liability  company,  corporation,  joint stock  company,  trust,  joint venture,
unincorporated organization or governmental entity or any department,  agency or
political subdivision thereof.

     "[ * * * ] Obligations"  shall mean that Railroad,  in accordance with that
certain  Agreement,  dated as of [ * * * ], between  Railroad and [ * * * ], now
known as [ * * * ], shall refer Pathnet's Route Plan on CSXT Corridor to [ * * *
], in writing,  and [ * * * ] shall have ten (10)  business days from receipt to
confirm its intent to negotiate with Pathnet for the  installation of a proposed
portion of the Pathnet  System.  If [ * * * ] declines to negotiate with Pathnet
or fails to advise Railroad of its intent to negotiate  within ten (10) business
days following its receipt of  notification,  the terms of this Agreement  shall
become operative as to the Build Supplement  evidenced by the Route Plan, except
in those areas subject to the following exclusivity provisions. In addition, [ *
* * ] has  exclusivity on those segments of CSXT Corridor on which [ * * * ] has
commenced   installation  of  its  fiber  optic   communications   system.  Such
exclusivity  does not apply:  (i) to any  segment in which all  conduit or fiber
optic capacity has been sold or utilized;  and (ii) to third party installations
of ten (10) miles or less.

      "Rail Corridor" shall have the meaning set forth in Recital A above.

      "Railroad Duct" shall have the meaning set forth in Section 8.1 below.

      "Repeater  (Regen)"  shall mean a device which  regenerates,  amplifies or
extends optical  signals,  used to send the light impulse through Optical Fiber,
and includes attendant  equipment,  facilities,  power source, and technological
changes.

      "Repeater  (Regen) Sites" shall mean those permitted  portions of the Rail
Corridor on which  Repeaters  (Regens) are  located,  and shall be limited to an
area of five  hundred  (500)  square  feet  or  less,  and  located  beyond  the
Restricted Working Area, unless otherwise  specifically  permitted in writing by
Railroad.

      "Restricted  Working  Area"  shall mean the area  parallel  to and located
thirty  feet (30') (or the top of any ditch  slope if that  distance  is greater
than  thirty feet (30')) from the  centerline  of the  outermost  track (on each
side) in the Rail Corridor.

       "Segment" shall mean either a longitudinal  section of Rail Corridor or a
longitudinal  section of Conduit  (Innerduct) or Cable installed by Pathnet,  as
applicable.

      "Stockholder  Agreement"  shall mean that  certain  Stockholder  Agreement
dated on or about the date hereof by and  between, among  others,  Railroad  and
Pathnet.

      "Substitution  Notice"  shall have the  meaning  set forth in Section  4.2
below.

      "System" shall mean Fiber Optic Communication System.

      "System  Map"  shall mean  Railroad's  line map,  published  periodically,
designating the general location of the Railroad's operating lines.

                                        5
<PAGE>

      "Term" shall have the meaning set forth in Section 3.1 below.

      "Title Deficient Areas" shall mean those portions of the Rail Corridor, if
any,  for which  Railroad  holds title in less than fee simple  absolute and for
which  Railroad may not otherwise have the right to grant to Pathnet the license
for use and occupancy as contemplated by this License Agreement.

      "Trackage  Rights"  shall mean the  rights  arising  by  agreement  of one
railroad to use the tracks or right-of-way of another  railroad for the carriage
of rail traffic;  said agreement  ordinarily  imparting no ownership interest in
the burdening  carrier  relating to the tracks or  rights-of-way of the burdened
carrier.

      "[* * *] Obligations" shall mean that in CSXT Corridor occupied by a fiber
optic  communications  system  installed by [* * *] (or any predecessor  entity)
(collectively  "[* * *]")  or,  in any  CSXT  Corridor  over  which  [* * *] has
exercised its option to install its system within the preceding [* * *] prior to
the date of the  applicable  Build  Supplement,  Pathnet's  System  shall not be
installed in any length longer than [* * *] contiguous  miles and no closer than
[* * *] from any existing [* * *] facility.  For the purposes of this limitation
only,  any two (2) Segments of Pathnet's  Fiber Optic  Communications  System of
which the  respective  ends are less than [* * *] apart shall be deemed a single
Segment and the  aggregate  length of such two (2) Segments  (but not the length
between the respective ends of such Segments) shall be considered in determining
contiguous mileage.

      2.    LICENSE

      2.1 Grant of License. (a) Subject to the terms and conditions contained in
the  Agreements,  including,  without  limitation,  Article 6 of this Agreement,
Railroad  hereby  grants  to  Pathnet a license  of  Limited  Telecommunications
Rights, for the Term and upon the conditions, covenants and agreements set forth
in the Agreements,  to select up to [* * *] miles of Rail Corridor (including up
to 2,000 miles of NYC Corridor) to be designated (as provided herein and subject
to Railroad's approval rights as set forth in the Agreements) as Designated Rail
Corridor  and  to  use  such   Designated  Rail  Corridor  for  the  purpose  of
constructing,  installing,  operating,  maintaining,  repairing,  replacing  and
removing (and including  rights of access subject to the  conditions,  covenants
and agreements set forth in the Agreements) a Fiber Optic Communications Systems
containing no more than eight (8) Conduits  (Innerducts) and an unlimited number
of Optical Fibers  therein,  together with necessary  appurtenant  equipment and
structures (the "License").  Subject to Railroad's  prior consent,  which may be
withheld in Railroad's sole discretion,  Pathnet may install additional Conduits
(Innerducts), if Railroad and Pathnet can reach agreement on how to share in the
revenue resulting from sales of such Conduits  (Innerducts) or the Optical Fiber
contained therein.

            (b) With respect to CSXT Corridor  located  within the State of [* *
*],  Pathnet  acknowledges  the pendancy of certain  class  action  litiga- tion
concerning the use of railroad  rights of way by  telecommunications  companies.
During the pendancy of this or any related  litigation,  Pathnet  shall not have
any right under this  Agreement  to install its System or  Facilities  upon CSXT
Corridor in the State of [* * *] without the prior written  consent of Railroad,
which shall not be unreasonably  withheld,  provided however,  that if the court
rules that telecommunications  companies (such as Pathnet), cannot install their
systems and facilities on such rights of way, Pathnet shall have the obligation,
prior to the installation of any portion of its System or Facilities on the CSXT
Corridor  in the State of [* * *], to  acquire  Broad-  form  Telecommunications
Rights  sufficient  in  Railroad's   reasonable  discretion  to  authorize  such
installation.    Pathnet    understands    and   agrees   that   any   Broadform
Telecommunications  Rights  acquired  by  Pathnet  are  subject to the terms and
conditions of this License Agreement.

      2.2   Acknowledgement   of  Condition  of  Title.   Pathnet   understands,
acknowledges and agrees that (a) portions of the Designated Rail Corridor may be
in Title  Deficient  Areas,  and (b)  Pathnet  accepts  the License in any Title
Deficient Areas

                                        6
<PAGE>
 subject  to  the  terms  and  conditions  of  the  Agreements.  Subject  to the
provisions of this Article 2, with respect to any Segment of the Designated Rail
Corridor in Title  Deficient  Areas,  the License herein  granted  Pathnet shall
include  the  additional  right in favor of  Pathnet to  procure  all  Broadform
Telecommunications Rights from third parties as Pathnet determines are necessary
to enable it to  construct,  install,  operate,  maintain,  repair,  replace and
remove  Pathnet's  Facilities and System in such Title  Deficient Areas provided
that Pathnet shall not acquire  exclusive  Broadform  Telecommunications  Rights
(such that the underlying fee owner no longer has the right to grant such rights
to third parties)  without the prior written  consent of Railroad,  which may be
withheld in  Railroad's  sole  discretion.  All  provisions  of the  Agreements,
including,  but not limited to,  Pathnet's  obligations for the payment or other
delivery of the consideration  described in this License Agreement,  shall apply
as between  Railroad  and Pathnet  with  respect to any Title  Deficient  Areas,
notwithstanding  that Pathnet's  right to occupy the Title Deficient Areas is or
may be derived,  in whole or in part, from Broadform  Telecommunications  Rights
obtained by Pathnet from third parties. The License is made and given subject to
the [* * *] Obligations, the [* * *] Obligations and the rights and interests of
all other third  parties,  existing as of the Effective  Date or the date of any
Build Supplement.

      2.3  Operating  Agreement.  The  parties  acknowledge  and agree  that the
License shall be exercised in accordance  with the terms and  provisions of this
License  Agreement  and  the  Operating  Agreement,   the  terms  of  which  are
incorporated herein by this reference.  In the event of any conflict between the
Operating  Agreement  and this License  Agreement  with respect to any rights or
obligations  under this License  Agreement,  the terms of this License Agreement
shall control.  Notwithstanding  any contrary  provision in the Agreements,  the
parties agree that (i) any dispute relating to this License Agreement,  except a
dispute  arising  under  Section 8.5 hereof,  shall not be subject to Article 25
(Liaison;  Coordination and Dispute Resolution) of the Operating  Agreement,  it
being the  specific  intention  of the parties to litigate  any and all disputes
hereunder,   without  resort  to   arbitration   or  mediation,   and  (ii)  the
indemnification  provisions  contained  in this License  Agreement  shall not be
governed or  affected  by Article 17  (Liability;  Indemnity)  of the  Operating
Agreement.

      2.4 Transfer of  Broadform  Telecommunications  Rights.  In the event that
Pathnet obtains  Broadform  Telecommunications  Rights with respect to any Title
Deficient  Areas that provide use and occupancy  rights in excess of the Limited
Telecommunications  Rights  granted  by  Railroad  to  Pathnet  pursuant  to the
Agreements,  then Pathnet shall  immediately  offer,  by way of  assignment,  to
convey such  Broadform  Telecommunications  Rights to Railroad.  Upon receipt of
Pathnet's offer of assignment,  Railroad shall promptly  determine,  in its sole
and absolute  discretion,  to accept such  assignment or reject the same. In the
event Railroad  accepts such  assignment,  Railroad shall pay to Pathnet,  fifty
percent (50%) of the actual  direct out of pocket costs  (exclusive of Pathnet's
internal  overhead)  incurred by Pathnet in connection  with the  acquisition of
such rights  together  with the actual  direct costs  including  overhead of any
Pathnet field personnel to the extent dedicated to such acquisition.

                                        7
<PAGE>

          2.5 Sublicenses.  Pathnet may sell, lease, license, or otherwise grant
rights  in  and  to  Optical  Fibers,   telecommunications   capacity,   Conduit
(Innerduct) or other  portions of Pathnet's  System on such terms as Pathnet may
determine  in its  sole  discretion.  Pathnet  may  also  involve  customers  or
co-development or strategic  partners in the installation of Pathnet's System on
Designated  Rail  Corridors  on such  terms as Pathnet  determines,  in its sole
discretion.  Any such arrangements shall be expressly subject and subordinate to
the terms and  conditions of the  Agreements,  Pathnet shall remain fully liable
for its obligations under the Agreements, Pathnet shall remain the sole point of
contact with Railroad in connection with such arrangements, and Pathnet shall be
responsible  for and shall  supervise any and all activities on or affecting the
Designated  Rail  Corridor.  Pathnet shall have no right to sell,  sublicense or
otherwise  transfer  the right to access  any  portion  of the  Designated  Rail
Corridor to a third party without the prior written  consent of Railroad,  which
consent may be withheld in Railroad's sole discretion.

      2.6 Selection and  Development of Rail  Corridor.  Pursuant to one or more
supplements to this License  Agreement,  the form of which is attached hereto as
Exhibit  1 (each a "Build  Supplement"),  Pathnet  shall,  except  as  otherwise
provided  herein,  designate  as  Designated  Rail  Corridor  for its System and
Facilities  up to the  maximum  number  of  miles  of Rail  Corridor  authorized
hereunder.  Pathnet may  designate  such  Designated  Rail  Corridor at any time
during  the first [* * *] years  after  the  Effective  Date  (the  "Designation
Period").  Railroad shall approve each Build Supplement  within thirty (30) days
of submission  thereof  unless such  approval  cannot be granted due to existing
contractual  or  other  legal  limitations,   safety  concerns,  operational  or
engineering  conflicts  or  interference  with  existing or  foreseeable  future
development of the Rail Corridor for railroad purposes.  Designation of the Rail
Corridor  pursuant to an approved Build  Supplement  shall remove the designated
mileage  from the mileage bank granted  under this License  Agreement.  Together
with each Build  Supplement,  Pathnet  shall also submit a proposed  schedule of
construction (the "Construction Schedule") of its System and Facilities over the
Segment designated in the Build Supplement. Railroad shall have the right, to be
exercised in its reasonable discretion within thirty (30) days after submission,
to approve or reject any proposed  Construction Schedule (giving the reasons for
any such rejection and leave for Pathnet to resubmit such Construction  Schedule
within the Designation  Period),  provided that Pathnet shall commence  physical
installation of Conduit (Innerduct) in the ground no sooner than sixty (60) days
after Railroad's approval of the Build Supplement and Construction Schedule, but
no later than three (3) years of Pathnet's  submission of the  applicable  Build
Supplement,  unless  otherwise  provided  herein.  If  Pathnet  fails to  timely
commence such physical installation, Pathnet shall be prohibited from installing
any portion of its  Facilities  or System  within such  Segment and shall not be
entitled  to any refund of the miles  deducted  (from the mileage  bank  granted
hereunder)  as a result of such Build  Supplement,  provided  that  Pathnet  may
submit a second  Build  Supplement  and  Construction  Schedule for such Segment
during the Designation  Period (which second  submission  shall be treated as an
initial submission hereunder).

                                        8
<PAGE>

      3.    TERM

      3.1 Term.  Unless sooner  terminated in accordance  with the provisions of
the  Agreements,  the License,  the  Agreements and the rights granted under any
Build  Supplement  shall be for a term  commencing as of the Effective  Date and
ending thirty (30) years hence (the "Term").

      4.     EXCLUSIVITY

      4.1  Exclusive  Rights.  Except  as set  forth  below in this  Article  4,
Pathnet's  rights  and  interests  under the  License  and with  respect  to the
Designated  Rail  Corridor  (including  those  portions of the  Designated  Rail
Corridor for which Pathnet obtains Broadform  Telecommunication Rights) shall be
non-exclusive.

      4.2 NYC  Corridor  Development.  For a period of three (3) years  from the
Effective Date hereof (the "Exclusivity  Period"),  with respect to the Segments
of the NYC Corridor (up to a maximum of 2,000 miles)  designated by Pathnet upon
execution  of this License  Agreement as set forth in Exhibit 6 hereof,  Pathnet
shall have the  exclusive  right to place and operate its System and  Facilities
within such Segment(s) (the "Construction Exclusivity"); provided, however, that
the foregoing  exclusivity right will not apply to any Segment of less that [* *
*]  unless  either  (i)  the  Segment  connects  two  cities  in  which  Pathnet
establishes a point of presence;  or (ii) the Segment connects Pathnet's network
on property that is not within the NYC Corridor to a city on the NYC Corridor in
which Pathnet  establishes a point of presence.  Notwithstanding  the foregoing,
Pathnet  will not have  exclusivity  rights  within the radii  around the cities
designated on Exhibits 3 and 4, attached hereto and incorporated herein. For the
four (4) years following the expiration of the Exclusivity  Period (although the
foregoing  exclusivity  shall no longer apply),  Railroad shall promptly  notify
(the "Interest  Notice") Pathnet in writing of any serious  inquiries from third
parties  who wish  access to a Segment of the NYC  Corridor  which  Pathnet  and
Railroad have executed a Build  Supplement for  construction and installation of
Pathnet's  System and/or  Facilities.  Within ten (10) days after its receipt of
the  Interest  Notice,  Pathnet  shall  notify  Railroad  if it has a good faith
interest in pursuing  negotiations  with the interested  third party. If Pathnet
fails  to  notify  Railroad  that it has an  interest  within  such ten (10) day
period,  then Pathnet shall be deemed to have  conclusively  waived its right to
negotiate  with such  third  party.  If  Pathnet  notifies  Railroad  that it is
interested in such negotiations within such ten (10) day period,  Pathnet shall,
for a period of [* * *] after Pathnet's  receipt of such Interest  Notice,  have
the exclusive right to negotiate with such third party with respect to

                                        9
<PAGE>
 such third party's  access,  construction,  installation  and/or use of a fiber
optic   communications   system  along  such  Segment  (the  foregoing   rights,
collectively  "Negotiation  Exclusivity").  If Pathnet and such third party have
not executed a definitive  agreement within such [* * *] period,  Railroad shall
be free to negotiate  and enter into an agreement  with such third party for the
development of the referenced Segments of the NYC Corridor.  Upon written notice
to Railroad  (the  "Substitution  Notice"),  Pathnet may  substitute  additional
Segments of NYC Corridor for Segments of NYC Corridor  previously  designated in
Exhibit 6, provided that (i) any such  substitute  NYC Corridor shall be subject
to the  rights  of  third  parties  in such NYC  Corridor  as of the date of the
Substitution Notice; (ii) the aggregate mileage of Pathnet's  designation of NYC
Corridor (after  deducting the mileage of the originally  designated  Segment(s)
and  adding the  mileage of the  substitute  Segment(s))  does not exceed  2,000
miles;  (iii) the  Construction  Exclusivity  which  initially  attached  to the
originally  designated Segment(s) shall no longer apply to such Segment(s) after
the Substitution  Notice;  (iv) no Construction  Exclusivity shall attach to the
substitute Segment(s);  and (v) with respect to such substitute Segment(s),  the
Negotiation  Exclusivity  shall  commence  upon the date of  completion  of such
substitute  Segment(s)  and  shall  continue  for a  period  of four  (4)  years
following the expiration of the Exclusivity Period (even though the Construction
Exclusivity shall not apply).

      4.3 Third Party  Non-Exclusive  Grants.  Except as provided in Section 4.2
above,  Railroad  may  grant  development  rights  for  fiber  optic  and  other
communication  systems  in the Rail  Corridor  (including  the  Designated  Rail
Corridor) to any third party on a non-exclusive basis.

      4.4 Third Party Exclusive Grants. Except as provided in Section 4.2 above,
Railroad may grant  development  rights for fiber optic and other  communication
systems in the Rail Corridor  (including  the  Designated  Rail Corridor) to any
third party on an exclusive basis; provided,  however, that Pathnet shall not be
subject to such exclusivity provisions.

      4.5 Additional  Restrictions.  In addition to the foregoing  restrictions,
Pathnet  represents  that (i) Pathnet  will  commence and  diligently  pursue to
completion the installation of its System and Facilities over five hundred (500)
miles of NYC  Corridor in each of the first three (3) years after the  Effective
Date  hereof;  and (ii) in all stages of its  development  of the NYC  Corridor,
seventy five percent (75%) of the Designated  Rail Corridor miles  completed and
under development (in accordance with the applicable  Construction  Schedule(s))
will be in contiguous  segments of at least two hundred (200) miles each. In the
event Pathnet breaches either of these representations,  then as Railroad's sole
and exclusive remedy,  Pathnet will automatically lose Construction  Exclusivity
as to the  entirety  of the NYC  Corridor  except  as to those  Segments  of NYC
Corridor  which  Pathnet has  completed  in  accordance  with this  Section 4.5,
provided that Pathnet shall be entitled to Negotiation Exclusivity commencing on
the date of completion of any Segment(s) for which Construction  Exclusivity was
lost  hereunder  and  continuing  for a period of four (4) years  following  the
expiration of the Exclusivity  Period (even though the Construction  Exclusivity
shall not apply).

      5.    EQUITY CONSIDERATION

      5.1  Consideration.  As  consideration  for the  License,  Railroad  shall
receive an equity interest in Pathnet pursuant to the Contribution Agreement.

      6.    TITLE LIMITS.

      6.1 General.  Pathnet understands and acknowledges that Railroad occupies,
uses and possesses lands,  rights-of-way  and rail corridors under all forms and
qualities  of  ownership  rights  or facts,  from fee  simple  absolute  to bare
occupation.  Accordingly, nothing in the Agreements shall act as or be deemed to
act as any warranty, guaranty or

                                       10
<PAGE>

representation  of the  quality or quantity  of  Railroad's  title in and to any
particular Segment occupied,  used or enjoyed in any manner by Pathnet under any
rights created in the Agreements.  It is expressly understood that Railroad does
not  warrant  title to any  portion of the Rail  Corridor,  and  Pathnet  hereby
accepts  the  grants  and  privileges  contained  herein,  subject to all lawful
outstanding existing liens, mortgages and superior rights or interests in and to
the Rail  Corridor,  and all leases,  licenses and easements or other  interests
previously granted to or reserved by others therein.

      6.2 Limitations of License. The term "License" herein shall mean: (a) with
regard to any portion of Rail Corridor  which is owned by Railroad in fee simple
absolute or in which the uses contemplated  hereunder are otherwise  statutorily
authorized  or  approved  by the state in which such Rail  Corridor  is located,
merely a  "license";  (b) with  regard to any  portion of Rail  Corridor  owned,
occupied, used or controlled by Railroad in less than fee simple absolute (e.g.,
fee simple determinable, fee simple conditional, lease or rail easement or other
occupancy  right),  where the  applicable law permits such grants by Railroad to
Pathnet,  merely "a right of occupancy" commensurate with the term and extent of
Railroad's ownership,  occupancy, etc; and (c)with regard to any portion of Rail
Corridor  for which  Railroad  does not possess the right to license the same to
third parties for  telecommunications  purposes, the Agreements shall not convey
any rights to Pathnet except that Railroad merely waives its exclusive rights to
occupy,  use and/or  control the Rail  Corridor  commensurate  with the term and
extent of such Railroad rights.

      6.3 Broadform  Telecommunications  Rights.  Pathnet understands and agrees
that the rights conveyed hereunder may not be sufficient to permit  installation
of its System and Facilities at all desired locations  throughout the Designated
Rail Corridor. Accordingly, except as otherwise provided herein, Pathnet may, as
Pathnet reasonably deems necessary, obtain Broadform Telecommunication Rights in
accordance  herewith before  commencing  construction on any Segment,  provided,
however,   that  Pathnet   understands   and  agrees  that  any  such  Broadform
Telecommunications  Rights  acquired  by  Pathnet  within  the  Designated  Rail
Corridor are subject to the terms and conditions of this License Agreement.

      6.4  Waiver  of  Claims.  Pathnet  agrees  it shall  not  have and  hereby
completely  and  absolutely  waives its right to any claim against  Railroad for
damages or any other legal or equitable relief on account of any deficiencies in
title to the Designated Rail Corridor.

      6.5 Indemnity.  In addition to the indemnities  contained in the Operating
Agreement,  Pathnet shall indemnify, defend (at Pathnet's sole cost and expense,
with counsel  selected and controlled by Railroad,  if Railroad so requests) and
hold  Railroad and its  Affiliates,  officers,  directors,  employees and agents
harmless  from and against all claims or  litigation  for  trespass,  slander of
title,  overburden of easement, or any other claims arising out of or based upon
(i) Pathnet's Conduit (Innerduct), Cable or Optical Fiber placement, or (ii) the
presence of Pathnet's Conduit (Innerduct), Cable or Optical

                                       11
<PAGE>

Fiber or other Facilities in, on or along the Designated Rail Corridor, or (iii)
Pathnet's failure to obtain sufficient Broadform  Telecommunications  Rights, or
(iv)  the   presence   of   Pathnet's   purchasers,   sublicensees,   customers,
co-development  or  strategic  partners,   agents,  invitees,  their  respective
employees or any other third party acting for the benefit or at the direction of
Pathnet or any such third  party,  on the  Designated  Rail  Corridor,  or their
individual or collective use of Pathnet's Conduit (Innerduct),  Cable or Optical
Fiber or other  Facilities in, on or along the Designated Rail Corridor,  or (v)
the title  related  claims of  Pathnet's  purchasers,  sublicensees,  customers,
co-development  or  strategic  partners,   agents,  invitees,  their  respective
employees or any other third party acting for the benefit or at the direction of
Pathnet or any such third party,  including  all claims for damages,  including,
but not  limited  to,  civil,  criminal,  compensatory,  consequential,  direct,
indirect,  treble,  exemplary,  special,  punitive  and  all  other  damages  or
penalties  of any kind  available  at law or in equity..  This  indemnity  shall
survive the expiration or termination of the Agreements. The foregoing indemnity
shall not be deemed to apply to any of the foregoing claims, liabilities,  costs
or  expenses to the extent  attributable  to  Railroad's  own  operations  or to
Railroad's grant of rights of way for fiber optic,  utility or other uses to any
parties other than Pathnet.

      6.6 [* * *] Obligations and [* * *] Obligations. The License and all other
rights and interests granted pursuant to the Agreements and all of the terms and
provisions  of  the  Agreements  are  made  expressly  subject  to  the  [* * *]
Obligations and the [* * *] Obligations.  The parties  acknowledge that the [* *
*]  Obligations  and the [* * *]  Obligations  affect  all or  part of the  CSXT
Corridor.  The portions of the CSXT Corridor over which [* * *] and [* * *] have
installed  conduit are depicted on Exhibit 5, attached  hereto and  incorporated
herein.  Railroad  shall  promptly give written  notice to Pathnet of all future
installations  and/or  designations  of CSXT  Corridor  by Pathnet  and [* * *].
Nothing  in this  paragraph  will be  deemed  to  expand  the [* * *] or [* * *]
Obligations  beyond  the  scope  of such  obligations  arising  pursuant  to the
agreements between Railroad and [* * *] and [* * *], respectively.

      7.     THIRD PARTY JOINT FACILITIES AND TRACKAGE RIGHTS.

      7.1 This Agreement does not pertain to any occupancies  over or structures
upon rights-of-way owned jointly by Railroad with another Person which is not an
Affiliate  of Railroad  or upon any Rail  Corridor  on which  Railroad  has only
Trackage  Rights.  Railroad,  however,  agrees to reasonably  cooperate with and
assist  Pathnet in obtaining any approvals of third parties  necessary to permit
Pathnet to use any such  jointly  owned  rights-of-way,  and agrees not to block
Pathnet's  application to use any portion of the Rail Corridor on which Railroad
only has  Trackage  Rights;  provided,  however,  that Pathnet  shall  reimburse
Railroad,  upon demand,  for any costs,  including  reasonable  attorneys' fees,
incurred by Railroad in  connection  with such  cooperation.  The portion of the
Rail Corridor over which Railroad possesses only Trackage Rights are depicted on
the Railroad System Map which has been made available to Pathnet.

      8.    CONDUIT (INNERDUCT); FIBER; AND CAPACITY.

                                       12
<PAGE>

      8.1  Railroad  Ducts  and  Signal  Cable.  Pathnet,  at its sole  cost and
expense,  shall install one (1) two-inch (2.0") SDR-11 or equivalent single duct
or pipe, of not less than one and nine-tenths  inches (1.9") inside diameter for
Railroad (the "Railroad Duct").  The Railroad Duct shall be installed by Pathnet
along the entire length of Designated  Rail Corridors in which Pathnet  installs
the Pathnet System and where  installation  of such Railroad Duct in addition to
the Conduits  (Innerducts) to be installed by Pathnet,  is physically  feasible,
with such  installation  to be concurrent  with  Pathnet's  Conduit  (Innerduct)
installation.  The Railroad Duct shall become the sole property of Railroad upon
installation,  and  Railroad,  its  successors  and/or  assigns,  shall have the
exclusive right of use of such Railroad Duct. To the extent assignable,  Pathnet
shall assign to Railroad,  without  charge,  any service and product  warranties
relating to such  Railroad  Duct that it obtains  from its  manufacturer  and/or
installation  contractor(s).  The Railroad Duct may be used only for  Railroad's
internal  communications needs, and neither the Railroad Duct, nor Optical Fiber
therein, nor telecommunications capacity thereon, may be sold, assigned, leased,
licensed,  or otherwise made available to  third-parties,  or used in connection
with any  telecommunications  business,  until the earlier of (a) five (5) years
after completion of construction of the relevant Segment containing the Railroad
Duct,  (b) the sale,  option to  purchase,  or use by Pathnet  of all  installed
Conduits (Innerducts) or Optical Fibers on such Segment other than those held in
reserve by Pathnet, or (c) ten (10) years from the Effective Date hereof.

      8.2 Fiber Optic Capacity.

      A. Pathnet  will provide up to [* * *] at no charge to Railroad,  provided
that the maximum  number of [* * *] miles  shall not exceed [* * *] miles.  Such
mileage shall be calculated in straight  line (i.e.  airline)  miles,  not route
miles. Pathnet will make such capacity available to Railroad at Pathnet's points
of presence,  including at any central office where Pathnet is co-located, where
Pathnet has  equipment  in place to offer [* * *] service.  Notwithstanding  the
foregoing,  Pathnet  agrees  that if and when it offers  services  in the cities
listed on [* * *] Pathnet  will  install  equipment to offer [* * *] service and
will  provide  such [* * *]  service to  Railroad  pursuant  to this  Agreement.
Railroad will be  responsible  for any costs required to transport such capacity
from Pathnet's  point of presence to Railroad's  required point of  termination,
including  costs of  interconnection,  provisioning,  co-location  of additional
required equipment, and the cost of any local loop, leased lines, or other means
of transport.  At Railroad's  request,  Pathnet will arrange such  transport and
interconnection  costs,  provided Railroad reimburses Pathnet for all actual and
reasonable costs incurred by Pathnet in connection therewith, including internal
costs,  but  excluding  any  overhead,  without  mark-up  for  profit.  Prior to
incurring any such costs,  Pathnet will discuss such  arrangements with Railroad
so that the parties may identify the most cost-effective solution.

      B. The maximum cross-section of the capacity provided to Railroad pursuant
to this  Section at any point shall not exceed [* * *] of the total  capacity of
Pathnet's  network at such point. In addition,  the number of [* * *] terminated
at any point shall not exceed [* * *] of the capacity terminated at such point.

      C. The capacity  described in this Section may be utilized by Railroad and
its  Affiliates  for its  internal  communications  only,  and may not be  sold,
assigned, leased, licensed, or otherwise made available to third-parties.

      8.3 Ability to Purchase  Telecommunications  Capacity. CSX shall also have
the right,  subject to  availability  as determined by Pathnet in its reasonable
discretion, to purchase telecommunications capacity anywhere on Pathnet's entire
fiber optic communications  system at prices at least as favorable as Pathnet is
then  offering as its best rate to other  unrelated  parties for like amounts of
telecommunications  capacity in like markets. The foregoing capacity may be used
only for Railroad's or any Railroad Affiliate's internal  communications  needs,
and may not be sold, assigned, leased, licensed, or otherwise

                                       13
<PAGE>

made available to third-parties.

      8.4 Last Available Build in Segment. If, in any Segment of Designated Rail
Corridor,  Railroad  determines  that it is likely that  Pathnet's  construction
will,  due to  engineering  or  construction  limitations,  be the last  Conduit
(Innerduct)  placed or  constructed  within such  Segment,  Railroad may require
Pathnet to build additional  Conduits  (Innerducts) for Railroad's  benefit.  In
such  event  Railroad  will  pay a sum  equal  to the  ratio  of the  additional
Conduit(s)  (Innerduct(s))  installed  in such  Segment  to the total  number of
Conduits (Innerducts)  installed therein,  multiplied by the total actual direct
out of pocket costs  (exclusive  of Pathnet's  internal  overhead) of the entire
installation  together with the actual costs (including overhead) of any Pathnet
field  personnel to the extent  dedicated to such  installation.  The  foregoing
additional  Conduits  (Innerducts)  will be subject to the same  restrictions as
apply to the Railroad Duct.

      8.5 Boston to Framingham  Conduits  (Innerducts).  On the  Effective  Date
hereof,  Pathnet shall submit a Build Supplement and  Construction  Schedule for
the  development of the Segment of Rail Corridor  between Boston and Framingham,
provided that,  notwithstanding  any provision  hereof to the contrary,  Pathnet
shall  commence  physical  installation  of Conduit  (Innerduct) in such Segment
within  one (1) year of the  Effective  Date  hereof.  In  connection  with such
installation,  Pathnet shall also install,  at Pathnet's  sole cost and expense,
four (4) two inch (2") Conduits (Innerducts) for Railroad's exclusive use and/or
for sale by Railroad to third  parties  (the "CSX  Conduits").  The CSX Conduits
shall be in lieu of the  Railroad  Duct to be  installed  along such  Segment by
Pathnet in  accordance  with Section  8.1. In the event that Pathnet  determines
that the Boston to Framingham  Segment is not commercially  practicable  (taking
into consideration  Pathnet's  obligation to install the CSX Conduits),  Pathnet
shall not be obligated to install such Segment, provided that, in recognition of
the value of the CSX Conduits to Railroad,  which  constituted a material aspect
of the bargain  achieved  through the  Agreements,  Pathnet and  Railroad  shall
negotiate,  in good faith,  for Pathnet to deliver  equivalent value to Railroad
pursuant to a mutually  agreed  alternative.  If the parties are unable to agree
upon such mutually agreed  alternative,  the dispute shall be subject to Article
25 (Liaison; Coordination and Dispute Resolution) of the Operating Agreement.

      9.    DISCLAIMER

      9.1 Disclaimer Relating to Certain Information.  Railroad does not warrant
the  accuracy of those maps,  descriptions  and  depictions  attached  hereto as
Exhibits 2, 3 and 5, nor does it warrant the accuracy of the Railroad  Valuation
Maps or the Railroad  System Map.  Railroad states that such items were prepared
and are utilized in the ordinary course of Railroad's business.  With respect to
Exhibit 5 only, Railroad's Assistant Vice President,  T. R. Jackson,  represents
that such Exhibit accurately depicts the current status of the occupancies of [*
* *] and [* * *] on CSXT Corridor, to the best of his knowledge.

      IN WITNESS WHEREOF,  the undersigned have executed this License  Agreement
as of the Effective Date.

                                       14
<PAGE>

                            CSX TRANSPORTATION, INC.,
                            a Virginia corporation, for itself and as Operator
                            for New York Central Lines, L.L.C.

                            By:  /s/ J Randall Evans
                                ---------------------------------
                            Title: ___________________________

                            PATHNET TELECOMMUNICATIONS, INC.,

                             a Delaware corporation

                            By: /s/  Richard Jalkut
                                --------------------------------
                            Title: CEO
                                --------------------------------


                                       15





<PAGE>

                                    EXHIBIT 1
                        NYC BUILD SUPPLEMENT NO. -------

Utility Project Name:______________________________________________________
Segment:___________________________________________________________________
Railroad Project Name:_____________________________________________________

     THIS BUILD SUPPLEMENT  NO._______  ("Build  Supplement") is made as of this
_______ day of ____________________, _______ (the "Effective Date"), between CSX
TRANSPORTATION,  INC., a Virginia corporation,  as Operator for New York Central
Lines LLC, a Delaware limited liability company and a wholly owned subsidiary of
Consolidated  Rail Corporation,  a Pennsylvania  corporation  ("Railroad"),  and
PATHNET TELECOMMUNICATIONS, INC., a Delaware corporation ("Utility").

                                    RECITALS:

     A.   Railroad and Utility have previously  entered into those certain Fiber
          Optic  License  and  Access  Agreement  and  Right  of  Way  Operating
          Agreement both dated as of _____ ____________________,  as amended and
          supplemented from time to time by the parties (collectively, the "Base
          Agreement").

     B.   The Base Agreement  grants  certain  rights to Utility,  including the
          right to install a Fiber Optic  Communications  System pursuant to one
          or more Build  Supplements  over certain  Segments of Designated  Rail
          Corridor as more fully defined therein.

     C.   Utility wishes to expand its current Fiber Optic Communications System
          in accordance with the Base Agreement and this Build Supplement.

     NOW,  THEREFORE,  in  consideration  of the mutual covenants and agreements
contained  herein,  and for the sum of Ten and No/100  Dollars  ($10.00) in hand
paid and other good and valuable  consideration,  the receipt and sufficiency of
which are hereby acknowledged, Railroad and Utility agree as follows:

     1.   The above Recitals are true and correct and are incorporated herein by
this reference.

     2. Unless  otherwise  specifically  defined in this Build  Supplement,  all
capitalized  terms used herein shall have the same meanings  defined in the Base
Agreement.

     3. In  addition  to the  rights  and  obligations  set  forth  in the  Base
Agreement  and any  previously  executed  Build  Supplements,  and in accordance
therewith and herewith,  Utility is hereby  granted a  non-exclusive  License to
install the following  additional  Segment(s) of its Fiber Optic  Communications
System  as shown on  Exhibit(s)  _______________,  attached  hereto  and by this
reference made a part hereof and described as follows:

Segment:                              from:                     to:

City, State                      _______________          _______________,
County                           _______________          _______________,
Township                         _______________          _______________,
Valuation Map No.                _______________          _______________,
Milepost                         _______________          _______________,


                                                                               1
<PAGE>


Railroad Survey Station No.      _______________          _______________,
Total distance:                             ___________________;


Aggregate Optical Fiber Count
   (irrespective of number of Conduit/Innerduct or Cable)   ___________________;
Number of Conduit/Innerduct                                 ___________________;
Size of Conduit/Innerduct                                   ___________________;
Number of Cable                                             ___________________;
Size of Cable                                               ___________________.

     4. The  non-exclusive  license  granted  to  Utility  with  respect  to the
additional  installation  pursuant to this Build  Supplement shall be for a term
concurrent with the Base Agreement.

     5. The parties hereby ratify and affirm the Base Agreement, as supplemented
hereby, which shall continue in full force and effect.


IN WITNESS WHEREOF, the parties hereto have executed this Build Supplement as of
the Effective Date.

Witnesses:                              CSX TRANSPORTATION, INC.,
                                        a Virginia corporation, as Operator for
                                        New York Central Lines LLC,
                                        a Delaware limited liability company

________________________________        By:_______________________________
                                        Print Name:_______________________
________________________________        Print Title:______________________


Witnesses:                               PATHNET TELECOMMUNICATIONS, INC.,
                                          a Delaware corporation

________________________________        By:_______________________________
                                        Print Name:_______________________
________________________________        Print Title:______________________


                                                                               2

<PAGE>

                                    EXHIBIT 1
                        CSXT BUILD SUPPLEMENT NO. -------

Utility Project Name:______________________________________________________
Segment:___________________________________________________________________
Railroad Project Name:_____________________________________________________

     THIS BUILD SUPPLEMENT NO._______ ("Build Supplement") is made as of this
day of _____ _______________, _______ (the "Effective Date"), between CSX
TRANSPORTATION, INC., a Virginia corporation ("Railroad"), and PATHNET
TELECOMMUNICATIONS, INC., a Delaware corporation ("Utility").

                                    RECITALS:

     A.   Railroad and Utility have previously  entered into those certain Fiber
          Optic  License  and  Access  Agreement  and  Right  of  Way  Operating
          Agreement  both  dated as of _____  _______________,  as  amended  and
          supplemented from time to time by the parties (collectively, the "Base
          Agreement").

     B.   The Base Agreement  grants  certain  rights to Utility,  including the
          right to install a Fiber Optic  Communications  System pursuant to one
          or more Build  Supplements  over certain  Segments of Designated  Rail
          Corridor as more fully defined therein.

     C.   Utility wishes to expand its current Fiber Optic Communications System
          in accordance with the Base Agreement and this Build Supplement.

     NOW,  THEREFORE,  in  consideration  of the mutual covenants and agreements
contained  herein,  and for the sum of Ten and No/100  Dollars  ($10.00) in hand
paid and other good and valuable  consideration,  the receipt and sufficiency of
which are hereby acknowledged, Railroad and Utility agree as follows:

     1.   The above Recitals are true and correct and are incorporated herein by
this reference.

     2. Unless  otherwise  specifically  defined in this Build  Supplement,  all
capitalized  terms used herein shall have the same meanings  defined in the Base
Agreement.

     3. In  addition  to the  rights  and  obligations  set  forth  in the  Base
Agreement  and any  previously  executed  Build  Supplements,  and in accordance
therewith and herewith,  Utility is hereby  granted a  non-exclusive  License to
install the following  additional  Segment(s) of its Fiber Optic  Communications
System  as shown on  Exhibit(s)  _______________,  attached  hereto  and by this
reference made a part hereof and described as follows:

Segment:                              from:                     to:

City, State                      _______________          _______________,
County                           _______________          _______________,
Township                         _______________          _______________,
Valuation Map No.                _______________          _______________,
Milepost                         _______________          _______________,
Railroad Survey Station No.      _______________          _______________,
Total distance:                             ___________________;


                                                                               1
<PAGE>

Aggregate Optical Fiber Count
   (irrespective of number of Conduit/Innerduct or Cable)  ____________________;
Number of Conduit/Innerduct                                ____________________;
Size of Conduit/Innerduct                                  ____________________;
Number of Cable                                            ____________________;
Size of Cable                                              ____________________.

     4. The  non-exclusive  license  granted  to  Utility  with  respect  to the
additional  installation  pursuant to this Build  Supplement shall be for a term
concurrent with the Base Agreement.

     5. The parties hereby ratify and affirm the Base Agreement, as supplemented
hereby, which shall continue in full force and effect.


IN WITNESS WHEREOF, the parties hereto have executed this Build Supplement as of
the Effective Date.

Witnesses:                              CSX TRANSPORTATION, INC.,
                                        a Virginia corporation

_______________________________         By:__________________________________
                                        Print Name:__________________________
_______________________________         Print Title:_________________________

Witnesses:                               PATHNET TELECOMMUNICATIONS, INC.,
                                          a Delaware corporation

_______________________________         By:__________________________________
                                        Print Name:__________________________
_______________________________         Print Title:_________________________


                                                                               2

<PAGE>
                                    EXHIBIT 2


                                 CSX System Map
                                 --------------



                           (Map of CSX Railway System)

<PAGE>
                                    Exhibit 3

                     Non-exclusivity around specific cities
                     --------------------------------------



                                  [ *  *  * ]
<PAGE>

                                    EXHIBIT 4

                                   TIER CITIES

                            [* * *]          [* * *]
                                    [* * *]
<PAGE>
                                    Exhibit 5
                       Map of [* * *] and [* * *] Builds
                                    [* * *]
<PAGE>
                                    Exhibit 6

                  Pathnet's Initial Designation of Conrail Build

                                  [Map of Conrail ROW]
<PAGE>


                                    EXHIBIT 7


                                    [ * * * ]



                                                                EXHIBIT   10.9
        Portions  of this exhibit have been  omitted and filed  separately  with
                  the Securities and Exchange Commission.
                   These portions are designated "[ * * * ]."




                        RIGHT OF WAY OPERATING AGREEMENT


                               dated as of   March 30, 2000


                                     between


                            CSX TRANSPORTATION, INC.
                     A VIRGINIA CORPORATION, FOR ITSELF AND
                   AS OPERATOR FOR NEW YORK CENTRAL LINES LLC,
                      A DELAWARE LIMITED LIABILITY COMPANY
         AND A WHOLLY-OWNED SUBSIDIARY OF CONSOLIDATED RAIL CORPORATION,
                           A PENNSYLVANIA CORPORATION


                                       and


                        PATHNET TELECOMMUNICATIONS, INC.,
                             A Delaware corporation


                                        1
<PAGE>

                                TABLE OF CONTENTS

ARTICLE                                                                     PAGE

1.   Certain Definitions
2.   Grant of License
3.   Limitation of Rights; Railroad's Use Rights
4.   Planning, Installation and Implementation
5.   Permits
6.   Fouling Track; Safety Rules
7.   Track Use; Clearances; Crossings
8.   Flagging; Watchmen
9.   Facility Location Signs
10.  Maintenance of Rail Corridor, Facilities
11.  Railroad Approvals; Admissions
12.  Railroad Expenses; Employee Costs
13.  Liens and Encumbrances
14.  Taxes
15.  Sites for Non-Cable Facilities
16.  Independent Contractor Status
17.  Liability; Indemnity
18.  Insurance
19.  Notices
20.  Relocations; Alterations
21.  Line Sales; Abandonment
22.  Condemnation
23.  Pathnet Discontinuance
24.  Railroad's Right to Require Suspension of Activities; Failure to Make
     Timely Payment
25.  Liaison; Coordination and Disputes Resolution


                                      xiii
<PAGE>


26.  Termination; Removal
27.  Document Confidentiality
28.  General Terms



                                      xiii
<PAGE>

                                 EXHIBIT SUMMARY

EXHIBIT  A-1   Route Plan
EXHIBIT  A-2   As-Built Drawing(s)
EXHIBIT  B     Planning, Installation and Implementation of Pathnet's System
EXHIBIT  C     Standard Lease Form (Form 3014-FO)
EXHIBIT  D     Sign(s) Design
   (copy)
EXHIBIT  E     Specifications for Underground Cable Crossings Under Tracks and
   (copy)      Rights of Way
EXHIBIT  F     Communications Manual Part 1-B-1, Paragraphs A through S and
   (copy)      Specifications for the Construction of Railroad
               Communication Pole Lines
EXHIBIT  G     Specifications for the Attachment of Cables to Railroad Bridges
EXHIBIT  H     Emergency and Disaster Responses
EXHIBIT  I     Specifications for Pole(s), Cable Crossing Installation Over
   (copy)      Railroad Tracks and Operating Right-of-Way
EXHIBIT  J     EB-2 Schedule
EXHIBIT  K     Arbitration or Mediation Resolution Procedures
EXHIBIT  L     Pathnet's Authorization for Fiber Optic Cable Work (sample)
EXHIBIT  M     Fiber Optic Installation SOP (Standard Operating Procedure,
   (copy)      MWI 1905-01, Issued 6/30/98)


                                       14

<PAGE>


                        RIGHT OF WAY OPERATING AGREEMENT


            THIS RIGHT OF WAY OPERATING AGREEMENT (this "Operating  Agreement"),
is made as of  March 30, 2000 (the  "Effective  Date"),  by and between CSX
TRANSPORTATION,  INC.,  a  Virginia  corporation  ("CSXT"),  for  itself  and as
Operator for New York Central Lines LLC, a Delaware  limited  liability  company
("NYC Lines") and a wholly-owned subsidiary of Consolidated Rail Corporation,  a
Pennsylvania corporation (CSXT and NYC Lines, collectively,  "Railroad"),  whose
mailing address is 500 Water Street,  Jacksonville,  Florida 32202,  and PATHNET
TELECOMMUNICATIONS,  INC., a Delaware  corporation  ("Pathnet"),  whose  mailing
address is 1015 31st Street, N.W., Washington, D.C. 20007.


                                 R E C I T A L S

            A.  Railroad is the owner or operator of a  continuous  right-of way
(by fee, easement,  license,  operating agreement,  joint use agreement or other
interest) within certain real property upon which it operates an interstate rail
transportation  system,  as shown on Railroad's  current System Map (hereinafter
referred to as the "Rail Corridor").

            B. Pursuant to the Contribution  Agreement and Stockholder Agreement
being  executed  in  connection  herewith,  Pathnet  desires  to  enter  into an
agreement  with  Railroad  to permit  Pathnet to  install,  market,  sell and/or
maintain a Fiber Optic  Communication  System,  including  Conduit  (Innerduct),
Cable, Optical Fibers and related equipment and structures,  along, in and on up
to [ * * * ] miles of Rail  Corridor,  along Segments of the Rail Corridor to be
selected in accordance herewith.

            C. Pursuant to the Contribution  Agreement and Stockholder Agreement
being executed in connection  herewith,  Railroad is willing to transfer certain
property  interests to Pathnet in exchange for stock in Pathnet,  provided  that
Pathnet  accepts a license to use the  selected  Segments  of the Rail  Corridor
subject to all of the terms and conditions of this  Operating  Agreement and the
Fiber  Optic  Access and License  Agreement  being  entered  into by and between
Railroad and Pathnet concurrently herewith (hereinafter, the "License Agreement"
and, together with this Operating Agreement, the "Agreements"), which Agreements
provide,  among other  things,  that (i) the license  granted  thereby  shall be
subject  to the  existing  rights and  interests  of other  parties,  including,
without  limitation,  [ * * * ]  and  [ * * * ],  and  (ii)  Railroad  makes  no
representation or warranty with respect to its right, title or interest, if any,
in and to any  portion  of the Rail  Corridor  or its right to grant any type of
license or other right for any party,  including  Pathnet,  to use or occupy the
same.

            NOW, THEREFORE, for good and valuable consideration, the receipt and
adequacy of which are hereby acknowledged,  Railroad and Pathnet hereby agree as
follows:



                                        1
<PAGE>

1.    CERTAIN DEFINITIONS.

      1.1  General  Interpretive  Principles.  For  purposes  of this  Operating
Agreement,  except  as  otherwise  expressly  provided  or  unless  the  context
otherwise  requires,  (i) the terms  defined in this  Section  have the meanings
assigned to them in this Section and include the plural as well as the singular,
and the use of any gender in this Operating Agreement shall be deemed to include
the other gender;  (ii) the word "including" means  "including,  but not limited
to," and (iii) the article,  section and  paragraph  headings in this  Operating
Agreement are for convenience only and are not intended to describe,  interpret,
define or limit the scope,  extent,  or intent of any of the  provisions of this
Operating Agreement.

      1.2 Incorporation of Recitals. The Recitals set forth above are
incorporated herein by this reference

      1.3 Definitions.  As used in this Operating Agreement, the following terms
shall  have  the  following  respective  meanings  (unless  otherwise  expressly
provided):

      "Abandonment", when applied to a Rail Corridor, shall mean the application
to  (and  approval  of) the  necessary  and  applicable  governmental  body  for
permission  to cease all public  rail  transportation  over any  Segment of Rail
Corridor and the removal of all Railroad  property,  tracks and ties,  excluding
permitted or required rail banking conveyances.

      "Affiliate"  shall mean any Person that,  directly or indirectly,  through
one or more  intermediaries,  controls or is  controlled  by, or is under common
control with, another Person.  The term "control," for this purpose,  shall mean
the ability,  whether by the  ownership of shares or other equity  interest,  by
contract or otherwise,  to elect a majority of the  directors of a  corporation,
independently  to select the managing  partner of a partnership  or the managing
member  of  a  limited  liability  company,  or  otherwise  to  have  the  power
independently  to remove and then select a majority of those Persons  exercising
governing  authority over an entity.  Control shall be conclusively  presumed in
the case of the direct or indirect  ownership of fifty  percent (50%) or more of
the equity interests in an entity.

      "Agreements" shall be as defined in Recital C.

      "As-Built Drawing" shall comprise Pathnet's Construction Plans, revised to
reflect all changes made during  actual  construction,  and shall show,  without
limitation, the exact location of Pathnet's System and Facilities in relation to
the nearest track,  and shall,  upon submission to and approval by Railroad,  be
attached hereto as Exhibit A-2.

      "Broadform Telecommunications Rights" shall mean, exclusive of the Limited
Telecommunications  Rights granted  hereunder,  the right of owners of and other
parties  with  interests  in the land  underlying  the Rail  Corridor to license
generally,  for  telecommunications  purposes,  any  and  all  portions  of Rail
Corridor.

      "Cable"  shall  mean a single  cable  containing  Optical  Fiber,  and any
support material and protective  casing,  capable of transmitting  data or voice
communications in a Fiber Optic Communication System.

                                        2
<PAGE>

      "Conduit  (Innerduct)" shall mean a single duct or pipe, not exceeding two
inches (2") inside diameter,  except where specifically  required or approved by
Railroad, suitable for housing a Fiber Optic Cable.

      "Conduit  Right-of-Way"  shall mean that  portion of the  Designated  Rail
Corridor on which  Pathnet's  Fiber Optic  Communication  System and  Facilities
(other than microwave and transmission towers) are located.

      "Construction Plans" shall mean the drawings, plans and specifications for
the construction  and  installation of Pathnet's System and Facilities,  showing
the proposed  location of all  Pathnet's  System and  Facilities,  in sufficient
detail,  with distance shown from nearest track, with separate detailed drawings
of all junction, Repeater (Regen) Sites, bridge and tunnel occupancies,  showing
depth of installation,  details and methods of the proposed  construction,  with
numbers and size of  Conduit(s)  (Innerduct(s))  or bare  Cable(s) to be placed,
including  Optical Fiber count and total mileage for each Segment.  Construction
Plans shall clearly note  Railroad  Valuation Map  references,  Railroad  Survey
Station and Milepost  references  for all  beginning  and ending  points and all
alignment  transition  points.  Each set of Construction  Plans for each Segment
shall have an overview map showing all of the required information.

      "Contracted   Railroad   Personnel"   shall  mean,  for  purposes  of  the
establishment  of liability  between and among the  contracting  parties of this
Operating  Agreement only, those employees of Railroad utilized in performing or
directly involved in the route designation,  inspection,  survey,  design, plan,
installation,  construction, maintenance or operation of Pathnet's Facilities or
System,  upon request of Pathnet or as  otherwise  required or permitted by this
Operating Agreement; and the same shall be considered as sole agents or servants
of Pathnet when performing such activity.

      "Contribution  Agreement" shall mean that certain  Contribution  Agreement
dated as of  November 2,  1999 by and  between,  among  others,  Railroad  and
Pathnet.

      "CSXT  Corridor"  shall  mean,  subject  to  Section  2.1 of  the  License
Agreement,  all of the Rail Corridor exclusive of the NYC Corridor, as described
in Exhibit 2 attached to the License Agreement.

      "CSXT" shall mean CSX Transportation, Inc., any of its predecessor
railroads, and any successor by merger, consolidation or reorganization.

      "Default  Rate" shall mean a rate of  interest  equal to the lesser of (a)
the Prime Rate plus five percent (5%) per annum, or (b) the highest non-usurious
rate permitted under applicable law.

      "Designated  Rail  Corridor"  shall  mean a Segment  of the Rail  Corridor
selected by Pathnet and approved by Railroad in accordance with the terms of the
Agreements.

      "Discontinuance," when related to bare Conduit (Innerduct) or dark Optical
Fiber within  Pathnet's  Fiber Optic  Communication  System or Segment  thereof,
shall mean that Pathnet has ceased dedicating commercially reasonable efforts to
the sale and  marketing  of  telecommunications  products  and  services  on the
applicable  Segment for a period of six  consecutive (6) months and when related
to lit  Optical  Fiber  within  Pathnet's  Fiber Optic  Communication  System or
Segment thereof, shall mean, for a period of six (6) consecutive




                                        3
<PAGE>

months,  complete (a) disconnection  from power source;  (b) disconnection  from
terminal;  or (c) cessation of  transmission  of signal  through such Segment or
System.  Such term shall not include a temporary  disconnection  or cessation of
transmission  during  periods  of  maintenance  or  repair  of the  Fiber  Optic
Communication System.

      "Engineer"  shall  mean the  Chief  Engineer  of CSXT,  or the  authorized
representative(s) thereof.

      "Facilities",  when applied to property of or installed by Pathnet,  shall
mean Conduit (Innerduct), Cable, carrier pipes, Pathnet wires and poles, Optical
Fibers,  junctions,  Repeaters (Regens),  Handholds,  terminals,  power sources,
fault alarm system(s),  emergency equipment storage shelters,  attachments,  and
all other structures and articles of personal property connected with, necessary
for,  appurtenant  to, or useful to the  installation,  operation,  maintenance,
repair, re-installation,  replacement,  relocation or removal of Pathnet's Fiber
Optic Communication System.

      "Fiber Optic" or "Optical Fiber" shall mean a strand of optical  waveguide
permitting the transmission of communications signals.

      "Fiber  Optic  Communication  System"  or  "System"  shall mean the system
utilizing Optical Fiber as the medium for  communications and transmission to be
installed  by  Pathnet  in the  Designated  Rail  Corridor,  which  may  contain
Conduit(s)  (Innerduct(s)),  Cable(s)  and  Optical  Fiber(s).  Such terms shall
include all Conduit  (Innerduct),  Cable,  Optical Fiber,  Handholds,  manholes,
marker tape, signs, couplers,  structure attachment,  pull rope, other necessary
ancillary hardware,  and bridge, tunnel and trestle attachments,  and shall also
include  such  communications  technologies  as may  hereafter  evolve  from  or
relating to Optical Fiber but which utilize  Pathnet's  Facilities and/or System
as initially installed or as thereafter modified pursuant to the Agreements.

      "Fouling  of Tracks" or  "Fouled"  shall mean the  existence,  movement or
placement of equipment  and/or  personnel on a railroad  track or within  twelve
feet (12') of the centerline of any track within the Rail Corridor.

      "Handholds"  shall  include  Cable loops,  or boxes or vaults placed in or
above ground at junctions,  Repeaters (Regens) or at areas of Cable splicing and
connection, for storage of slack Cable.

      "License Agreement" shall have the meaning set forth in Recital C.

      "Limited   Telecommunications   Rights"  shall  mean  Pathnet's  right  to
construct, install, operate, repair and maintain Pathnet's Facilities and System
as more  particularly  described in, and subject to the terms and conditions of,
the Agreements,  including,  without limitation, those contained in Article 6 of
the License Agreement.

      "NYC  Corridor"  shall  mean that  certain  portion  of the Rail  Corridor
operated by CSXT pursuant to that certain  Operating  Agreement dated as of June
1, 1999 by and  between  New York  Central  Lines LLC,  as owner,  and CSXT,  as
operator, as described in Exhibit 2 to the License Agreement.

      "Optical Fiber" shall mean Fiber Optic.

                                        4
<PAGE>

      "Pathnet" shall mean Pathnet as defined in the  introductory  paragraph of
this Agreement,  any successor by merger,  consolidation or reorganization,  and
its permitted assignees.  For purposes of Pathnet's  construction,  maintenance,
repair, replacement or removal of Pathnet's System and/or Facilities,  "Pathnet"
shall  also  mean  Pathnet's  employees,   agents,  servants,   contractors  and
subcontractors.

      "Person"  shall mean any  individual,  association,  partnership,  limited
liability  company,  corporation,  joint stock  company,  trust,  joint venture,
unincorporated organization or governmental entity or any department,  agency or
political subdivision thereof.

      "Prime  Rate" shall mean the prime rate of U.S.  money  center  commercial
banks as published in The Wall Street Journal from time to time.

      "[ * * * ] Obligations" shall be as defined in the License Agreement.

      "Railroad" shall mean Railroad as defined in the introductory paragraph of
this Agreement,  any of its predecessor  railroads (including  Consolidated Rail
Corporation), any successor by merger, consolidation or reorganization,  and its
permitted   assignees.   For  the   purposes  of  Article  17   (excluding   the
indemnification obligation in Section 17.2 which shall be limited to Railroad as
defined in the  introductory  paragraph of this  Agreement) and Article 18 only,
the term "Railroad" shall also include all Affiliates of CSXT, Affiliates of NYC
Lines and their respective officers, directors, employees and agents.

      "Rail Corridor" shall have the meaning set forth in Recital A.

      "Relocation",  when related to alteration  or removal of Railroad's  track
from Rail  Corridor,  shall mean: (a) change in track grade or location in order
to avoid or eliminate curvature problems;  (b) creation or deletion of double or
multiple  tracks;  or (c)  installation of additional  passing  tracks,  storage
sidings,  spur or industrial lead tracks, and other track movement for operating
or shipping  needs or plans of Railroad.  The term,  however,  shall not include
Abandonment  or complete  removal of any particular  tracks in conjunction  with
termination or Abandonment of a service route, branch or main line.

      "Repeater  (Regen)"  shall mean a device which  regenerates,  amplifies or
extends optical  signals,  used to send the light impulse through Optical Fiber,
and includes attendant  equipment,  facilities,  power source, and technological
changes.

      "Repeater  (Regen) Sites" shall mean those permitted  portions of the Rail
Corridor on which  Repeaters  (Regens) are  located;  and shall be limited to an
area of five  hundred  (500)  square  feet  or  less,  and  located  beyond  the
Restricted Working Area, unless otherwise  specifically  permitted in writing by
Railroad

      "Restricted  Working  Area"  shall mean the area  parallel  to and located
thirty  feet (30') (or the top of any ditch  slope if that  distance  is greater
than  thirty feet (30')) from the  centerline  of the  outermost  track (on each
side) in the Rail Corridor.



                                        5
<PAGE>

      "Route  Plan"  shall  mean the plan  showing  the  route of  placement  of
Pathnet's  Facilities  and System in, on or over  Segments  of  Railroad's  Rail
Corridor,  as prepared by Pathnet and approved in writing by Railroad,  as shown
on Exhibit A-1 attached hereto.

      "Segment"  shall mean either a longitudinal  section of Rail Corridor or a
longitudinal  section of Conduit  (Innerduct) or Cable installed by Pathnet,  as
applicable.

      "Stockholder  Agreement"  shall mean that  certain  Stockholder  Agreement
dated on or about the date hereof by and  between, among  others,  Railroad  and
Pathnet.

      "System" shall mean Fiber Optic Communication System.

      "Title Deficient Areas" shall mean those portions of the Rail Corridor, if
any,  for which  Railroad  holds title in less than fee simple  absolute and for
which  Railroad may not otherwise have the right to grant to Pathnet the license
for use and occupancy as contemplated by the License Agreement.

      "Trackage  Rights"  shall mean the  rights  arising  by  agreement  of one
railroad to use the tracks or right-of-way of another  railroad for the carriage
of rail traffic;  said agreement  ordinarily  imparting no ownership interest in
the burdening  carrier  relating to the tracks or  rights-of-way of the burdened
carrier.

      "Valuation  Maps" shall mean  Railroad's  Rail Corridor maps,  prepared by
Railroad  originally  in 1913-1919  under 49 U.S.  Code Sections 19 and 19a (now
Sections 10781-10783) for the U.S. Surface  Transportation  Board,  successor to
the Interstate Commerce Commission  ("S.T.B"),  and the S.T.B.  regulations,  as
updated from time to time.

      "[ * * * ] Obligations" shall be as defined in the License Agreement.

2.    GRANT OF LICENSE

      2.1 Exercise of Rights Under License  Agreement.  Pursuant to the terms of
the License Agreement,  Pathnet has been granted a license to select and utilize
up to [ * * * ] miles  of Rail  Corridor  (including  up to  2,000  miles of NYC
Corridor) for the installation  and operation of its System and Facilities.  The
rights and interests granted under the License Agreement shall be implemented in
accordance with the terms and provisions of this Operating  Agreement.  The term
of this  Operating  Agreement  shall be concurrent  with the term of the License
Agreement.

      2.2 Construction of the Facilities. Construction of the System and
Facilities by Pathnet shall occur in accordance with the following:

          (a) Access and Construction. All access and construction activities on
the  property  by  Pathnet  shall be  conducted  in strict  accordance  with the
requirements of this Operating  Agreement and the Exhibits hereto.  In the event
of any conflict between the terms of the Exhibits and the body of this Operating
Agreement, the provisions of the body of this Operating Agreement shall control.

          (b) Right to Audit. Railroad shall have the right, during regular
business hours, upon reasonable notice to Pathnet, and at mutually agreeable
times, to conduct field examinations



                                        6
<PAGE>

of  Pathnet's   Facilities   and  System  in  the  presence  of  an   authorized
representative  of Pathnet  and to examine  and audit such books and  records of
Pathnet as are appropriate  and necessary,  in Railroad's  sole  discretion,  to
determine and verify (i) the number and size of Conduits (Innerducts)  installed
by Pathnet in the Designated Rail Corridor pursuant to the Agreements,  and (ii)
such  other  items  related  to  Pathnet's  compliance  with  the  terms  of the
Agreements, as reasonably determined by Railroad. This audit right shall survive
the expiration or other  termination of the Agreements for a period of three (3)
years.

3.    LIMITATION OF RIGHTS; RAILROAD'S USE RIGHTS.

      3.1  Limitation  of Rights.  Pathnet,  at  Pathnet's  sole risk,  cost and
expense, shall furnish all materials, construct, maintain, use, change or remove
Pathnet's  Facilities  and System or any part thereof,  in  accordance  with the
design,  specifications  and  plans  approved  as  provided  in  this  Operating
Agreement, in a manner reasonably satisfactory to Railroad, all in a prudent and
workmanlike manner, in conformity with any applicable statutes,  orders,  rules,
regulations and specifications of any public body having  jurisdiction  thereof,
and so as not to interfere  with or endanger,  in the sole judgment of Railroad,
any property, traffic (freight or passenger), operations (direct or via Trackage
Rights),  maintenance,  employees or patrons of Railroad, or of others occupying
or using the  property of Railroad  for  railroad  operational  purposes at each
location,  including  other  lessees or  licensees  of  Railroad.  Railroad  may
prohibit  development on any Rail Corridor where development would  unreasonably
interfere with Railroad's  current or reasonably  foreseeable future development
for railroad  purposes.  Pathnet  shall be limited to a single  build  (one-time
placement)  in a single trench on each Segment of the  Designated  Rail Corridor
unless Railroad approves an additional trench, which approval may be withheld in
its sole discretion.

      3.2  Railroad's  Use Rights.  Subject to the terms and  provisions  of the
Agreements,  the  rights of  Pathnet  hereunder  shall  not  limit nor  preclude
Railroad's  use of its Rail  Corridor  for other  uses and  purposes,  including
placement and operation of Railroad's  own tracks(s),  signal and  communication
systems (of whatever  nature);  nor shall this Agreement bar or limit  placement
and operation of any other pipe, conduit,  cable,  optical fiber or wire line by
Railroad  or  its  licensee(s),  which  does  not  unreasonably  interfere  with
Pathnet's Facilities or Fiber Optic Communication System.

4.    PLANNING, INSTALLATION AND IMPLEMENTATION.

      The   procedures   and   conditions   for   planning,   installation   and
implementation  of  Pathnet's  System and  Facilities  are defined in Exhibit B,
attached hereto.

5.    PERMITS.

      5.1 Permit  Requirements.  Pathnet,  at its sole cost and  expense,  shall
secure  and  maintain  in  effect  all  federal,   state  and  local  approvals,
authorizations,   permits   and   licenses   required   for  the   construction,
installation,  operation,  maintenance,  repair,  replacement  and/or removal of
Pathnet's   Facilities  and  System,   including   zoning,   building,   health,
environmental  and  communication  service  permits  and  licenses,   and  shall
indemnify  Railroad  against claims for payment  therefor and against any claims
for fines or penalties  that may be levied for failure to procure,  or to comply
with,  such  approvals,  authorizations,  permits or licenses,  and any remedial
costs to cure any  violations  thereof.  Without  limiting  the  foregoing,  any
development or



                                        7
<PAGE>

environmental  impact statements  required for the Facilities or System shall be
prepared by Pathnet, at Pathnet's sole risk, cost and expense, and all costs for
local zoning,  construction  and subdivision  compliance,  approval and permits,
shall be borne solely by Pathnet.

      5.2 Railroad Cooperation.  Railroad shall not hinder Pathnet's attempts to
secure,  and shall  cooperate  with and assist  Pathnet,  at Pathnet's  cost and
expense,  in  obtaining,  any permits,  licenses or  approvals  of  governmental
agencies or  authorities,  or of any  necessary  third  parties,  for use of any
structures or facilities  (including streets,  roads or utility poles) along the
Designated Rail Corridor not solely owned by Railroad.

6.    FOULING TRACK; SAFETY RULES.

      6.1  Railroad  Safety and  Operating  Rules.  Pathnet  employees,  agents,
contractors  and/or  subcontractors  seeking  to enter or engage in  Fouling  of
Tracks or any portion of the Rail Corridor (including tunnels and bridges) shall
be trained in the safety and operating  rules  established by Railroad from time
to time (the "Railroad Safety and Operating Rules"), and shall at all times wear
required  identification badges and safety equipment (shoes,  hardhat,  goggles,
etc.).  Pathnet  shall bear all  travel,  lodging,  course  materials  and other
similar costs of its attendees at any program given or  administered by Railroad
to train such persons,  and Railroad  shall bear the costs  associated  with any
instructors.

      6.2  Contracted  Railroad  Personnel.  Railroad  shall provide  Contracted
Railroad  Personnel,  as necessary,  at Pathnet's sole risk, cost and expense as
provided  herein,  to accompany  Pathnet's  employees,  agents,  contractors  or
subcontractors during their presence on the tracks and the Rail Corridor.

      6.3 Restriction Right.  Notwithstanding  any contrary provision  contained
herein,  Railroad reserves the right, in its sole discretion,  to exclude or bar
specifically-named  individuals from entrance upon Railroad's tracks and/or Rail
Corridor for  demonstrating  actions  dangerous to themselves or others,  or for
refusing to comply with Railroad's  safety and operating  rules,  regulations or
directions, or for any other specific cause deemed sufficient in Railroad's sole
discretion.

7.    TRACK USE; CLEARANCES; CROSSINGS.

      7.1 Restricted Working Area. No goods, materials, equipment or fuel shall
be placed or stored within the Restricted Working Area.

      7.2 No Vehicles.  Pathnet shall not use Railroad's  tracks for maintenance
or the placement of its vehicles  without the prior written approval of such use
by  Railroad's  Engineer,  which  approval  may be  withheld  in his or her sole
discretion.

      7.3  Pathnet  Track  Support.  During  any  work of any  character  at any
location on its  System,  Pathnet,  at its sole risk,  cost and  expense,  shall
support the tracks and roadbed of Railroad to prevent any interference or danger
as necessary in the sole judgment of Railroad's Engineer. Upon the completion of
all work,  Pathnet  shall  restore  such tracks,  roadbed and other  property of
Railroad  to the same  functional  and  operational  condition  as  approved  by
Railroad's  Engineer,  which  approval  may be  withheld  in  his  or  her  sole
discretion.



                                        8
<PAGE>

      7.4  Railroad  Track  Support.  Railroad  may  perform or contract to have
performed any or all the work of supporting  tracks and roadbed and of restoring
the same, at the sole risk, cost and expense of Pathnet, if (a) Pathnet fails to
perform  such  work  timely or  satisfactorily,  (b) such  work is  required  by
Railroad's  labor  agreements  in  existence  at the time,  or (c)  requested by
Pathnet  (subject to  availability  of  Railroad's  personnel  and equipment and
satisfactory security for payment of costs by Pathnet).

      7.5  Crossing  Specifications.  Crossings  of  Railroad's  track  and Rail
Corridor   necessitated  by   difficulties  in  Conduit   (Innerduct)  or  Cable
construction  (i.e.,  locations  of manmade or  natural  structures,  waterways,
streets,  etc.) shall be coordinated  with and approved in writing by Railroad's
Engineer,  which  approval  may be withheld in his or her sole  discretion,  and
installation of such crossings shall be in accordance with the  requirements set
forth in Exhibit I, all at Pathnet's sole risk, cost and expense.

8.    FLAGGING; WATCHMEN.

      8.1 General.  Railroad shall have the right, in its sole discretion and at
any time  during  any  period of  construction,  maintenance,  repair,  renewal,
alteration  or removal of Pathnet's  System or  Facilities,  to place  watchers,
flaggers,  inspectors or  supervisors,  for the  protection of the operations of
Railroad  (including  freight and passenger service) or the property of Railroad
(including  Amtrak) or others (including  Pathnet) on the Rail Corridor or other
Railroad   property,   at  the  sole  risk,   cost  and   expense  of   Pathnet.
Notwithstanding  any contrary  provision  contained herein,  watchmen,  flagmen,
inspectors  or  supervisors  placed  upon the Rail  Corridor  or other  Railroad
property  while working on Pathnet's  System or Facilities  under this Article 8
shall be deemed to be Contracted Railroad Personnel of Pathnet.

      8.2 Scheduling.  Pathnet  recognizes that because of Railroad's  labor and
employment  agreements:  (a) the furnishing of any watchers or flaggers needs to
be  requested at least thirty (30) days prior to actual work date for short term
flagmen or forty-five (45) days prior to actual work date for long term flagmen,
or such  watchers/flaggers  may not be available;  (b) once a watcher/flagger is
designated,  he/she cannot be pulled from the job less than seven (7) days prior
to work date, or cost thereof may be incurred by Pathnet; (c) once assigned, for
any period of time, such  watcher/flagger must be paid for at least an eight (8)
hour shift,  regardless  of lesser  hours  worked;  and (d) if  Pathnet's  needs
overlap  ordinary shift turns (or tricks),  Pathnet may incur flagging costs for
both shifts/tricks.

9.    FACILITY LOCATION SIGNS.

      9.1  Pathnet,  at its sole  cost and  expense,  shall  furnish,  erect and
thereafter  maintain,  signs showing the location of all underground  Facilities
and Pathnet's contact  telephone number.  Such signs shall be painted and placed
in conformity with the provisions of Exhibit D attached hereto,  or as otherwise
mutually agreed upon in writing by Railroad and Pathnet.

10.   MAINTENANCE OF RAIL CORRIDOR, FACILITIES.

      10.1 Maintenance of Conduit Right-of-Way. Unless Railroad and Pathnet
otherwise agree in writing, Railroad shall not be responsible for maintenance of
Pathnet's Conduit Right-of-Way, or for clearing or removing of trees, shrubs,
plants, ice, snow or debris therefrom. If



                                        9
<PAGE>

Railroad agrees, at Pathnet's request,  to extend maintenance to cover Pathnet's
Conduit  Right-of-Way,  Railroad  shall  cut,  mow  and/or  treat  such  Conduit
Right-of-Way  maintenance  only at the same time as  Railroad  performs  its own
track  or Rail  Corridor  maintenance.  Railroad  shall  perform  such  extended
maintenance  at Pathnet's sole risk,  cost and expense and Railroad's  employees
performing such maintenance shall be deemed to be Contracted  Railroad Personnel
of Pathnet.  Railroad  shall be reimbursed  for all costs  incurred,  including,
without  limitation,  any and all billable  expenses,  labor costs  (Railroad or
contract),  supplies,  parts,  materials,  etc.,  directly  associated with such
extended maintenance program.

      10.2 Maintenance of Facilities. Pathnet shall maintain its Facilities, and
all ancillary structures within Conduit  Rights-of-Way,  at Pathnet's sole risk,
cost and expense.

11.   RAILROAD APPROVALS; ADMISSIONS.

      11.1 Any approval given or supervision exercised by Railroad hereunder, or
failure  of  Railroad  to object to any work  done,  material  used or method of
construction  or  maintenance of Pathnet's  System or  Facilities,  shall not be
construed as an admission of responsibility by Railroad or as a waiver of any of
the obligations of Pathnet under this Operating Agreement.

12.   RAILROAD EXPENSES; EMPLOYEE COSTS.

      12.1 General.  Railroad's  costs and expenses for work performed for or at
the expense of Pathnet pursuant to this Agreement (including review and approval
of Pathnet plans and designs)  shall be paid by Pathnet  within thirty (30) days
of Pathnet's  receipt of itemized  bills  therefor  irrespective  of any billing
disputes. Interest on unpaid billed amounts shall accrue monthly after the first
thirty (30) days at an annual rate equal to the Default Rate. Pathnet shall have
ninety (90) days from  payment to notify  Railroad,  in writing,  of any billing
disputes.  Billing disputes that are not resolved within sixty (60) days of such
notice shall be resolved in accordance with the provisions of Article 25.

      12.2 Invoice Format. Railroad bills for labor or supervision shall
include: Railroad's Project I.D. Number, Pathnet's Project I.D. Number,
Pathnet's Authorization for Fiber Optic Cable Work (substantially in the form of
Exhibit L attached hereto), and the dates, locations, party names, hourly or
salaried billing rates, number of hours, outside expenses and total charge.

      12.3 Permitted Costs and Expenses.  Documented costs and expenses directly
attributable  to work performed for Pathnet shall include only: (a) labor costs,
plus payroll  overhead and  additives  applicable  to each  Railroad  employee's
salary  or  hourly  rate as set forth in  Exhibit  J and as may be  modified  or
updated from time to time by Railroad;  (b) for contracted labor or consultants,
reasonable market-based amounts as billed to and paid by Railroad; (c) necessary
and  reasonable  travel  and  transportation   expenses;   (d)  the  reasonable,
market-based  total cost of materials  used and equipment  rentals,  plus actual
cost of freight  charges and handling;  and (e)  reasonable  rental cost for any
Railroad equipment used by Railroad or Pathnet or their respective  employees or
contractors.  Costs and expenses for  Railroad's  own labor and  personnel,  and
non-contract  administrative  overhead,  shall be limited to the sum of (i) then
current hourly rate plus,  (ii) applicable  overhead and additives  (which shall
include, but not be limited to, vacation, holiday, health and welfare, insurance
and  supervision) in accordance with the applicable  rates set forth in the then
current EB-2 Schedule in effect at the time the expense is



                                       10
<PAGE>

incurred,  published by Railroad and amended from time to time. The current EB-2
Schedule  applicable as of the Effective  Date is attached  hereto as Exhibit J.
Updated EB-2 Schedules will be available upon Pathnet's written request.

      12.4 Consultant. Railroad shall have the right, in its sole discretion, to
place  a  consultant  on  any  installation  site  in  lieu  of  Railroad's  own
supervisory  personnel,  at  Pathnet's  sole  cost and  expense  (provided  such
expenses are  reasonable,  market-based  and  consistent  with the provisions of
Section  12.3 above),  to monitor  installation  and  compliance  with  approved
Construction  Plans,  to log  progress,  and to log the time  spent by  Railroad
employees  (including  Contracted  Railroad  Personnel) in  accordance  with the
Agreements (by name, date and purpose).  Such  consultant  shall advise Railroad
and Pathnet of any  deviation  from  approved  Construction  Plans  requested by
Pathnet or any of Pathnet's contractors.

      12.5  Records.  Railroad  shall  keep  accurate  records  of all costs and
expenses  attributable to Pathnet pursuant to the Agreements,  and Pathnet shall
have the right,  at  Pathnet's  sole cost and  expense,  to examine and copy the
applicable  records of Railroad to verify that such charges  accurately  reflect
the costs and expenses thereof.

13.   LIENS AND ENCUMBRANCES.

      13.1 Pathnet shall not permit any  mortgage,  pledge,  security  interest,
lien or encumbrance,  including,  without limitation,  tax liens or encumbrances
and liens or encumbrances with respect to work performed or equipment  furnished
in  connection  with  the   construction,   installation,   operation,   repair,
maintenance,  replacement  or removal of the System or Facilities or any portion
of  the  Rail   Corridor   occupied   by   Pathnet   (collectively,   "Liens  or
Encumbrances"),  to be  established  or remain  against the Rail Corridor or any
other  property of  Railroad.  In the event that any Railroad  property  becomes
subject to any Lien or Encumbrance,  Pathnet agrees to pay, discharge,  bond off
or remove the same within  thirty (30) days of Pathnet's  receipt of notice that
such Lien or Encumbrance has been recorded,  filed or docketed against such Rail
Corridor or other Railroad property; provided, however, that if Pathnet provides
a bond or other  security  acceptable to Railroad for the payment and removal of
such Lien or Encumbrance, Pathnet shall have the right to challenge, at its sole
expense,  the validity  and/or  enforceability  of any such Lien or Encumbrance.
Pathnet shall indemnify,  defend and hold Railroad harmless against all damages,
costs (including  reasonable  attorneys' fees) and expenses,  arising out of any
lien, the  enforcement or removal  thereof,  or encumbrance  caused by the same,
with respect to the Rail Corridor or any portion  thereof or any other  Railroad
property.

14.   TAXES.

      14.1 Transfer Taxes.  Except as provided in Section 14.4 of this Operating
Agreement,  Pathnet  shall pay all transfer or  recordation  taxes,  documentary
stamps, and any similar expenses in connection with the transfer or execution of
the License (as defined in the License Agreement), this Operating Agreement, the
Contribution Agreement, the System and/or the Facilities.

      14.2 Sales and Use Taxes. Except as provided in Section 14.4 of this
Operating Agreement, if, pursuant to the Agreements or the Contribution
Agreement (i) the sale, acquisition, license, grant, transfer or disposition of
property or rights, or (ii) the payment



                                       11
<PAGE>

of any fee or  compensation  or the payment to Railroad  for  services  provided
thereunder, requires the payment of any sales or use tax (including any Canadian
GST or  provincial  sales tax) under any statute,  regulation  or rule,  Pathnet
shall pay the same, plus any penalty or interest  thereon,  to Railroad when due
or if allowable, directly to such taxing authority, and shall indemnify and hold
Railroad harmless therefrom.

      14.3 Property Taxes.  Pathnet shall pay all annual and periodic ad valorem
and other taxes levied or assessed upon Pathnet's  Facilities or the System, and
shall indemnify and hold Railroad harmless therefrom.

      14.4 Taxes Payable by Railroad.  Pathnet shall have no responsibility  for
(i) any taxes  (including  but not limited to transfer,  sales,  use,  income or
property  taxes),  assessments  or other  impositions  attributable  to  Conduit
(Innerduct) or other telecommunications  assets or services provided to Railroad
pursuant to Article 8 of the License  Agreement;  (ii) taxes based on Railroad's
income or corporate  franchise;  or (iii)  property or franchise  taxes that are
attributable  to the Rail  Corridor and not to Pathnet's  Facilities  or System.
Railroad shall reimburse Pathnet for any such taxes,  assessments or impositions
within thirty (30) days after written request.

      14.5 Mutual Cooperation.  Each party shall cooperate with the other party,
at the first party's sole cost and expense,  in the prosecution of any claim for
refund, rebate, reduction or abatement of any taxes which are the responsibility
of the first party under the Agreements or the Contribution Agreement,  provided
that a reasonable basis exists for such refund, rebate,  reduction or abatement.
The first party  shall  reimburse  the second  party for all  reasonable  out of
pocket  expenses  incurred in connection  therewith.  Notwithstanding  any other
provision of this Section,  the first party is not obligated to pay or reimburse
the  second  party for any tax for which the first  party is liable  under  this
Section  if the  party  first  elects to  prosecute  a claim  for  reduction  or
abatement of such taxes and prepayment thereof is not a condition to prosecuting
the claim.  The first party shall pay or reimburse the second party for any such
taxes when the taxes  finally  are  adjudged  to be due and owing by the highest
administrative or judicial authority to which an appeal has been taken.

15.   SITES FOR NON-CABLE FACILITIES.

      15.1  Non-Cable  Areas.  Railroad,  insofar  as it has the  right  and can
reasonably do so, shall make  available to Pathnet for Pathnet's sole use, areas
not to exceed five hundred (500) square feet within the Designated Rail Corridor
for use by  Pathnet as  Repeater  (Regen)  Sites,  or power or  auxiliary  power
stations, or sites for construction facilities or temporary storage of materials
and fuel for power  stations.  Railroad shall have no duty to provide such sites
at a requested  location if the width,  nature or other uses or planned  uses of
the Rail Corridor by Railroad at such location or if  restrictions on Railroad's
title or interest in the property preclude such use by Pathnet.

      15.2 Adjacent Land. If for any reason,  Railroad is unable to provide such
site within the Designated  Rail Corridor,  and Railroad has available  adjacent
land suitable for the location of such site, then Railroad shall furnish the use
of a reasonable  portion of such adjacent land to Pathnet for such site at a fee
to be  negotiated;  provided,  however,  that such use will not  interfere  with
Railroad's current or reasonably  foreseeable future use of such property.  Such
adjacent land usage shall be documented by Railroad's  standard form lease,  the
form of which is attached hereto as Exhibit C.



                                       12
<PAGE>

      15.3 No Obligation as to Third Parties.  Notwithstanding the provisions of
Sections  15.1 and 15.2,  Railroad  shall have no  obligation to provide or make
available  any  portion  of any  adjacent  land or allow  the  expansion  of any
structure of Pathnet  located  thereon  beyond five hundred (500) square feet or
such  additional  size  initially  improved  by  Pathnet  with the  approval  of
Railroad,  which  approval  may be withheld in its sole  discretion,  for use by
third party purchasers,  sublicensees,  transferees or permitted assignees.  Any
such accommodation shall be at a fee to be negotiated,  shall not interfere with
Railroad's  current or future use of such  property and shall be  documented  by
Railroad's  standard form lease, the form of which is attached hereto as Exhibit
C. This Section 15.3 shall not apply to Pathnet's partners in development of the
Rail  Corridor,  and shall  not  restrict  Pathnet's  ability  to make  space in
Pathnet's  existing  Facilities  available  to third  parties  on such  terms as
Pathnet determines in its sole discretion.  Pathnet shall,  except to the extent
caused  by  Railroad's  gross  negligence  or  willful  misconduct,  (i)  assume
responsibility for any and all claims,  liabilities,  damages,  costs (including
reasonable  attorneys'  fees) and expenses arising out of or based upon the acts
or omissions of any such third party in or around such non-cable facilities, the
Rail Corridor or other Railroad  property,  and (ii) indemnify,  defend and hold
Railroad  harmless  from and against any and all losses and damages  suffered by
such  third  party  as a  result  of the  presence  of such  third  party or its
facilities  or  equipment  in or  around  such  non-cable  facilities,  the Rail
Corridor or other Railroad property.

      15.4 Rent.  Rents for any land(s) outside of the Designated Rail Corridor,
or for lands within the Designated Rail Corridor in excess of five hundred (500)
square feet or for uses other than those described in Section 15.1,  shall be at
a fee to be negotiated.

      15.5  Approval of  Structure.  The location  and size of any  buildings or
other  structures  to be placed by Pathnet or any third party within  Railroad's
Rail Corridor or on Railroad's other property shall be as approved by Railroad's
Engineer, which approval may be withheld in his or her sole discretion, on plans
submitted in accordance herewith.

16.   INDEPENDENT CONTRACTOR STATUS.

      16.1 Except with respect to the Contracted  Railroad  Personnel,  Railroad
reserves no control whatsoever over the employment,  discharge,  compensation of
or services rendered by Pathnet's  employees,  agents or contractors,  and it is
the  intention of the parties  that  Pathnet  shall be and remain a licensee and
that nothing  herein shall be construed as  inconsistent  with that status or as
creating or implying  any  partnership  or joint  venture  relationship  between
Pathnet and Railroad.

17.   LIABILITY; INDEMNITY.

      17.1 Pathnet's Release and Indemnification.  Recognizing that Railroad has
owned and/or  operated the Rail  Corridor for many years prior to the  Effective
Date  and  prior  to  entry  thereupon  by  employees,  agents,  contractors  or
representatives  of  Pathnet,  and  in  addition  to the  indemnities  otherwise
provided in the Agreements,  Pathnet hereby assumes,  releases and shall defend,
indemnify, protect and save Railroad harmless from and against the following:

           (a) All  claims,  liabilities,  losses,  damages,  causes of  action,
costs,  and expenses  (including  reasonable  attorneys' fees and costs) arising
from: (1) damage to or  destruction of Pathnet's  Facilities or System except to
the extent attributable to the willful misconduct of



                                       13
<PAGE>
Railroad,  its  employees  or  contractors  and (2)  loss of  service  or use of
Pathnet's Facilities or System or loss of revenue or profit therefrom, including
any  claim  or  loss  to  any  client,  customer,  patron  or  other  purchaser,
transferee,  sublicensee or permitted  assignee of Pathnet's  rights or services
resulting from any damage to or  destruction of Pathnet's  Facilities or System.
Railroad  shall not under any  circumstances  be liable for  interruption  of or
damage to the  installation,  operation,  maintenance  or  repair  of  Pathnet's
Facilities or System unless  attributable to the willful misconduct of Railroad,
its employees (including Contracted Railroad Personnel), agents, contractors, or
other parties  performing  services for Railroad.  In no event shall Railroad be
liable for loss of income,  cost of substitute  service,  or other consequential
damages of any kind;

           (b) All  claims,  liabilities,  losses,  damages,  causes of  action,
costs,  and expenses  (including  reasonable  attorneys' fees and costs) arising
from  injury to or death of any  persons  on or about  Pathnet's  Facilities  or
System, including, but not limited to, Pathnet's employees, agents, contractors,
subcontractors,  invitees, or other such third parties, purchasers, transferees,
permitted  assignees,  licensees or sublicensees,  resulting from the existence,
construction,   maintenance,   operation,   use,  repair,   change,   placement,
replacement,  relocation  and/or subsequent  removal of Pathnet's  Facilities or
System,  or any part thereof,  or the use of the Rail Corridor or other Railroad
Property, regardless of any approvals, reviews, controls or standards imposed by
Railroad or other  actions of  Railroad,  unless such claims,  losses,  damages,
causes of action,  costs, and expenses (including reasonable attorneys' fees and
costs) result from the willful misconduct of Railroad;

           (c) All claims, liabilities, losses, damages, causes of action, costs
and expenses (including  reasonable  attorneys' fees and costs) arising from any
breach of the Agreements by Pathnet,  including, but not limited to, any failure
of Pathnet to support track and/or roadbed, as provided herein or any failure of
Pathnet to secure permits or other approvals as provided  herein,  regardless of
cause,  including  Railroad's  negligence,   but  excluding  Railroad's  willful
misconduct;

           (d) All  claims,  liabilities,  losses,  damages,  causes of  action,
costs,  and expenses  (including  reasonable  attorneys' fees and costs) arising
from any slide, soil disturbance or environmental damage or impairment resulting
from the existence,  construction,  installation,  maintenance,  operation, use,
repair,  change,  placement,  relocation and/or subsequent  removal of Pathnet's
Facilities or System, regardless of cause, including Railroad's negligence,  but
excluding Railroad's willful misconduct;

           (e) Any claim (regardless of merit), loss or damages awarded, whether
civil or criminal,  under any  antitrust  laws,  or under any federal,  state or
local regulatory  actions,  attributable to issues arising under the Agreements,
it being  understood  and  agreed  that  this  indemnity  shall not apply to any
claims, loss or damage arising out of any other agreement between the parties or
the parties'  performance  thereunder,  including the contributions set forth in
the Contribution Agreement;  in any such actions,  Railroad shall have the right
to designate and/or employ independent counsel, if deemed necessary by Railroad,
to protect its interests,  and the expense of such representation  shall be paid
or reimbursed by Pathnet;

           (f) Reserved.

           (g) All  claims,  liabilities,  losses,  damages,  causes of  action,
costs,  and expenses  (including  reasonable  attorneys' fees and costs) arising
from any damage or injury to (including



                                       14
<PAGE>
loss of use or service of or loss of  revenue  or profit  from) any  facilities,
cables, wires, pipes, casings, conduits,  innerducts or ducts of any other party
or Conduit  Right-of-Way  operator or user, licensee,  sublicensee,  transferee,
purchaser or permitted assignee arising out of or related to any act or omission
of  Pathnet  or  Pathnet's  employees,   agents,  contractors,   subcontractors,
licensees, sublicensees,  customers, partners, the Contracted Railroad Personnel
or others acting at the direction of any of the foregoing,  unless caused by the
willful misconduct of Railroad or Contracted Railroad Personnel;

           (h) All  claims,  liabilities,  losses,  damages,  causes of  action,
costs,  and expenses  (including  reasonable  attorneys' fees and costs) arising
from any act or omission of Pathnet or Pathnet's employees, agents, contractors,
subcontractors,  licensees,  sublicensees,  customers,  partners, the Contracted
Railroad  Personnel or others  acting at the  direction of any of the  foregoing
which are not expressly assumed by Railroad under Section 17.2.

      17.2 Railroad's  Indemnification.  Railroad hereby assumes  responsibility
for,  and shall  indemnify,  defend  and hold  Pathnet  harmless  from,  claims,
liabilities,  losses, damages, causes of actions, costs, and expenses (including
reasonable attorneys' fees and costs) arising from:

           (a) Death of or injury to any employee(s) of Railroad or Railroad's
Affiliates, other than Contracted Railroad Personnel;

           (b) Destruction of or damages to any Railroad or Railroad Affiliate
facilities or equipment (moving or stationary) or property;

           (c) Interruption to or cessation of freight rail service;

           (d)   The   willful   misconduct   of   Railroad's   Affiliates   or,
notwithstanding  anything to the contrary contained herein,  Contracted Railroad
Personnel.

UNLESS such claim, liability,  loss, damage, cause of action, cost or expense is
caused by, arises from, or results in whole or in part from:

               (i) any act or  omission of Pathnet  (including,  but not limited
to, any improper or negligent  plan and/or design,  construction,  installation,
maintenance,   placement,  operation,  repair,  relocation  use  or  removal  of
Pathnet's System or Facilities);

               (ii)  any breach of the Agreements by Pathnet;

               (iii) any direct rescheduling, delay or diversion costs, as set
               forth in Exhibit B; or

               (iv)  any matter which is the subject of Pathnet's release and
indemnification in Section 17.1.

      17.3 Notice of Claims;  Indemnification Procedures. Upon receipt of notice
by Railroad or Pathnet, as applicable,  (the "Indemnitee"),  of any loss, event,
happening or  occurrence  which would be the basis of a claim by the  Indemnitee
under the provisions of this Article 17 (an "Indemnified Claim"), the Indemnitee
shall immediately  provide written notice to the other party (the  "Indemnitor")
of such Indemnified Claim. So long as the Indemnitor is not in default in the

                                       15
<PAGE>

performance of its obligations  under the Agreements,  as between the Indemnitee
and the Indemnitor,  the Indemnitor shall retain primary  responsibility for the
conducting  of any  legal  and/or  administrative  action  or  other  proceeding
regarding any such Indemnified Claim (an "Indemnified Claim Proceeding") and the
defense (and any  appropriate  appeal)  thereof.  Legal  counsel  retained  with
respect to any Indemnified Claim proceeding shall be selected by the Indemnitor,
but shall be subject to the  reasonable  prior  approval of the  Indemnitee.  As
between the  Indemnitee and the  Indemnitor,  all costs incurred with respect to
any Indemnified  Claim  Proceeding  (including,  but not limited to,  reasonable
costs  and  attorneys'  fees)  shall  be  borne  by  the  Indemnitor,   and  the
Indemnitor's  indemnification  obligations  set forth in this  Article  17 shall
extend to all such costs.  Nothing  contained  herein shall in any way limit the
Indemnitee's right to participate  and/or retain  independent legal counsel,  at
the Indemnitee's expense, with respect to any Indemnified Claim proceeding,  but
the Indemnitee  shall cooperate with the Indemnitor and coordinate  Indemnitee's
participation   and/or  use  of  such  independent   counsel  in  a  matter  not
inconsistent with Indemnitor's positions and interests in such Indemnified Claim
Proceeding,  to the extent reasonably  possible and not adverse to the interests
of  Indemnitee.   Notwithstanding   the  foregoing,   in  the  event  Indemnitee
determines,  in  Indemnitee's  reasonable  opinion,  that there is a conflict of
interest or other circumstance whereby such Indemnitor's  retained legal counsel
cannot  adequately  represent  Indemnitee's  interests in any Indemnified  Claim
Proceeding,  Indemnitee shall have the right to retain independent legal counsel
and Indemnitor's  indemnification obligations set forth in this Article 17 shall
extend to all costs  incurred with respect to such separate  representation.  In
the event that an Indemnitor defends an Indemnitee pursuant to the terms hereof,
and the final adjudication  determines that the Indemnitee bears some portion of
liability under the Indemnified  Claim which is not subject to the  Indemnitor's
indemnification  obligations  hereunder,  the  costs  of  such  defense  will be
apportioned  between the  Indemnitor  and  Indemnitee  based upon such  parties'
ultimate liability after giving effect to the indemnification provisions hereof.
Any settlement of an Indemnified  Claim shall be subject to the written approval
of both the Indemnitee and the Indemnitor. Indemnification payment shall be made
within thirty (30) days of such approval.

      17.4  Exceptions  to  Liability.  Notwithstanding  any contrary  provision
contained herein,  (a) Railroad shall not have any liability  whatsoever for any
death of or injury to persons or damage to or loss of property  arising  from or
resulting in connection with any train  derailment,  and Pathnet hereby releases
Railroad  and its  Affiliates  from  any and all  claims,  liabilities,  losses,
damages,  causes of action, costs and expenses (including  reasonable attorneys'
fees  and  costs)  arising  from or  resulting  in  connection  with  any  train
operation,  accident  or  derailment,  irrespective  of  the  negligence,  gross
negligence  or willful  misconduct  of Railroad,  and (b) Pathnet  shall have no
liability relating to any Conduits  (Innerducts)  installed for or capacity sold
or made  available  to Railroad  pursuant to the  License  Agreement;  provided,
however,  that (x) any such Conduits  (Innerducts)  shall be of equal or greater
quality as Pathnet's own Conduits (Innerducts),  and (y) Pathnet shall grant the
same remedies to Railroad with respect to such capacity as Pathnet grants to its
customers in the ordinary course of its business (e.g., outage credits, it being
understood that Pathnet shall not be obligated to make any monetary  payments as
a remedy in connection with such capacity),  which Railroad acknowledges may not
provide it with any incremental benefit.

      17.5 Survival. The provisions of this Article 17 shall survive the
expiration or earlier termination of the Agreements.

                                       16
<PAGE>

18.   INSURANCE.

      18.1  Railroad  Protective  Liability  Insurance.  Before  any  period  of
construction of any portion of the System or Facilities  (including  preliminary
surveys and inspections),  Pathnet shall purchase, or cause its contractor(s) to
purchase,  and to  maintain  in  full  force  and  effect,  Railroad  Protective
Liability  Insurance  ("RPL")  naming  Railroad as the insured.  Said RPL policy
shall be written on the form  prescribed  in the  Federal  Aid  Highway  Program
Manual,  Volume 6, Chapter 6, Section 2,  Subsection  2, as amended from time to
time, or as  superseded  by the  AAR/AAHSTO  form,  and shall provide  available
limits of not less than  $5,000,000 per  occurrence,  $10,000,000  aggregate for
bodily  injury and  property  damage  (unless  Pathnet  designates  a  hazardous
material  Rail  Corridor as a Conduit  Right-of-Way,  and then  $10,000,000  per
occurrence,  $20,000,000  aggregate).  The  original of said RPL policy shall be
furnished to and approved by Railroad, prior to the commencement of any entry or
other operations under the Agreements.

      18.2 Liability Insurance.  Pathnet shall purchase and maintain,  until all
of  its  obligations  under  the  Agreements  have  been  fully  discharged  and
performed,  the following insurance  coverage:  (a) Commercial General Liability
Insurance ("CGL"),  including any applicable  umbrella policy,  with contractual
liability  covering actions assumed in the Agreements by Pathnet,  providing for
available limits of not less than $5,000,000 single limit,  bodily injury and/or
property damage combined, for damages arising out of bodily injuries to or death
of all  persons  in any one  occurrence  and for  damage  to or  destruction  of
property,  including the loss of use thereof,  in any one occurrence,  including
Federal Employers  Liability Act claims ("FELA") against the Railroad,  or other
liability  arising out of or  incidental  to railroad  operations;  (b) Workers'
Compensation, Employer's Liability Insurance and Occupational Disease Insurance;
and (c) Business Automobile Liability Insurance.  If any motor vehicles are used
in connection with the work to be performed under the Agreements,  Pathnet shall
purchase and maintain Business Automobile Liability Insurance with limits of not
less  than  $2,000,000  single  limit,  bodily  injury  and/or  property  damage
combined,  for damages to or destruction  of property  including the loss of use
thereof, in any one occurrence.  If, in Railroad's  reasonable opinion, a higher
limit of liability is necessary for any  insurance  policy  required  hereunder,
Railroad shall so notify  Pathnet and Pathnet shall,  within thirty (30) days of
receipt of such notice,  provide a copy of the  endorsement  to the  appropriate
policy increasing the liability coverage to the required limit.

      18.3  Policy  Requirements.  All  insurance  required  hereunder  shall be
effected by valid and  enforceable  policies  issued by  insurer(s) of financial
responsibility  and  authorized  to do business  in the states  where the System
and/or  Facilities are located,  all subject to the reasonable prior approval of
Railroad.  Except  for the RPL  policy  (on  which  Railroad  shall be the named
insured),  Pathnet's  liability  insurance  policies  shall name  Railroad as an
additional  insured and will not have any exclusions  for liability  relating to
railroad  operations by endorsement.  The Pathnet's  Workers'  Compensation  and
property   insurance  policies  shall  include  waivers  of  subrogation  rights
endorsements.  All  policies  shall  contain a  provision  for thirty (30) days'
written notice to Railroad  prior to any  expiration or  termination  of, or any
change in, the coverage  provided.  The  insurance  company shall be required to
provide  Railroad with at least thirty (30) days'  written  notice prior to such
expiration,  termination or change in any insurance coverage. Prior to any entry
upon the Rail Corridor  pursuant to the Agreements and upon  Railroad's  request
thereafter, Pathnet shall provide Railroad with the original RPL policy and with
certificates  of  insurance  for all other  coverages  showing that the required
coverages are in effect for the term of



                                       17
<PAGE>

the  Agreements.   The  liability  assumed  by  Pathnet  under  the  Agreements,
including, but not limited to, Pathnet's indemnification obligations,  shall not
be limited to the insurance coverage stipulated herein.

19.   NOTICES.

      19.1   General.   Unless   otherwise   provided   herein,   all   notices,
communications  and deliveries  required or permitted under the Agreements shall
be in  writing  and shall be (a)  delivered  personally,  (b) sent by  facsimile
transmission with subsequently  transmitted confirmation of receipt, (c) sent by
overnight  commercial  air  courier  (such as Federal  Express),  or (d) mailed,
postage prepaid,  certified or registered mail, return receipt requested; to the
parties at the addresses or facsimile numbers hereinafter set forth:

Pathnet:                                 Railroad:
- - - --------

Pathnet, Inc.                            CSX Real Property, Inc.
1015 31st Street, NW                     301 West Bay Street, Suite 800 (J915)
Washington, D.C.  20007                  Jacksonville, Florida  32202
Attention:     President                 Attention:  Assistant Vice President
               Network Services
Facsimile No:  (202) 625-7369            Real Estate Operations
                                         Facsimile No. (904) 633-4586


With a Copy To:                          With a Copy To:
- - - --------------

Pathnet, Inc.                            CSX Transportation, Inc.
1015 31st Street, NW                     500 Water Street (J150)
Washington, D.C.  20007                  Jacksonville, Florida  32202
Attention:     General Counsel           Attention:  Assistant General Counsel
Facsimile No:  (202) 625-7369            Facsimile No. (904) 359-7518

or at such other  address(es) or facsimile  number(s) as a party shall have duly
notified the other party.

In addition to the foregoing, any notice,  communication or delivery required or
permitted under Sections 17 and 18 shall also be sent to:


                                     CSX Corporation
                                     500 Water Street (J907)
                                     Jacksonville, Florida 32202
                                     Attention:    Risk Manager
                                                   Risk Management Department
                                     Facsimile No. (904) 633-5096

Any such notice,  communication  or delivery shall be deemed  delivered upon the
earliest  to occur  of:  (a)  actual  delivery;  (b) the  same day as  facsimile
transmission  (or the first  business  day  thereafter  if faxed on a  Saturday,
Sunday or legal holiday); (c) one (1) business day after shipment



                                       18
<PAGE>

by commercial air courier as aforesaid; or (d) upon receipt if sent by certified
or registered mailing as aforesaid.

      19.2 Planning, Design,  Installation and Construction Phase Access Notice.
During the Planning and Design and the  Installation  and  Construction  Phases,
Pathnet  shall,  except in the case of emergency,  give  Railroad's  Engineer at
least ten (10) days' written notice before  commencing  construction or bringing
any vehicle or equipment onto the Rail Corridor or other Railroad property,  and
forty-eight  (48) hours' notice before any other entry.  Any such written notice
shall state the name(s) of Pathnet  employee(s)  in charge or  contractor(s)  or
subcontractor(s) performing work or making such entry.

      19.3 Maintenance and Operation Phase Access Notice. During the Maintenance
and  Operation  Phase,  in order to secure  safety of  operated  trains,  crews,
passengers  and cargo of  Railroad,  and  safety  of  Pathnet  employees  and/or
contractors,  Pathnet  shall give  CSXT's  local  Director  of  Dispatch,  (904)
381-2765 and (904) 359-7551, as representative of Engineer, advance telephone or
telegraph  notice of entry onto any  portion of the Rail  Corridor,  which entry
shall be subject to consent and approval of Railroad's Engineer as to method and
timing,  which approval may be withheld in his or her sole discretion.  Any such
notice  shall state the name(s) of Pathnet's  employee(s)  or  contractor(s)  or
subcontractor(s) performing work or making such entry.

      19.4 Emergency  Notice. In case of disaster (such as a train derailment or
System failure) or other emergency demanding immediate examination or repairs to
the existing System or Facilities,  notice shall be given by either party to the
other in person or by telephone to the Emergency Response  Center(s)  designated
on Exhibit H attached hereto or as otherwise designated in writing by each party
to the  other.  Such  initial  verbal or  telephonic  notice,  however,  must be
confirmed in writing within  forty-eight  (48) hours.  Each party will cooperate
with the other to permit  restoration of each party's  operations as promptly as
feasible after such emergency.

20.   RELOCATIONS; ALTERATIONS.

      20.1 Relocation to Accommodate  Railroad.  If Railroad determines that any
Pathnet Facilities or System must be changed, altered or relocated after initial
construction  because of Railroad's  own track or facility  relocations  or rail
operational  needs  or  plans  (including  additions,  changes  to  track(s)  to
accommodate  freight or passenger  customers of Railroad),  or any  governmental
agency or  requirement,  Railroad  shall promptly give written notice thereof to
Pathnet of such needs, plans or requirements.  Within sixty (60) days of receipt
of such notice, Pathnet shall protect or move the Pathnet Facilities and System,
at Pathnet's sole cost and expense,  and in a manner  satisfactory  to Railroad;
provided,  however,  that Railroad shall reimburse Pathnet for any such costs or
expenses  received by Railroad  from a  governmental  entity or other  entity in
connection with such relocation.

      20.2  Relocation to  Accommodate  Third Party.  In the event of a Railroad
relocation  to  accommodate  any third  party  other than as provided in Section
20.1,  Pathnet shall protect or move its Facilities and System upon receipt from
Railroad of an agreement,  in writing,  obligating such third party to reimburse
Pathnet for all costs and  expenses  incurred by Pathnet,  including  reasonable
administrative and overhead, in connection therewith,  or, if Railroad is unable
to obtain such an  agreement  from such third  party,  Railroad's  agreement  to
reimburse Pathnet for the



                                       19
<PAGE>

foregoing costs (not to include any reimbursement of lost income). Pathnet shall
submit any invoice to  Railroad  within  ninety (90) days after such  relocation
work is completed.

      20.3 Replacement  Land. In the event of any relocation of Pathnet's System
or Facilities under Section 20.1, Railroad shall not be required to purchase for
Pathnet  any  replacement  land or  right-of-way  or to pay  Pathnet the cost to
secure same if there is not available Rail Corridor. However, Railroad agrees to
allow  Pathnet  to  relocate  to any other  available  adjacent  or nearby  Rail
Corridor  or other land owned by  Railroad  at  Pathnet's  sole cost;  provided,
however,  that Railroad shall not be entitled to any additional payment for such
replacement  Railroad  land or Rail  Corridor and the total mileage of such Rail
Corridor or replacement  land to which Pathnet  relocates shall be deducted from
and the  abandoned  Rail  Corridor  shall  be  added  to the  total  mileage  of
Designated Rail Corridor permitted under the License Agreement.

21.   LINE SALES; ABANDONMENT.

      21.1 In the  event  of a sale or  other  transfer  of any  portion  of the
Designated  Rail  Corridor,  such sale  shall be made  expressly  subject to the
Agreements and the rights of Pathnet  thereunder.  Notwithstanding any provision
herein to the  contrary,  Railroad  shall have the absolute  right,  in its sole
discretion, to effect an Abandonment of all or any portion of the Rail Corridor.

22.   CONDEMNATION.

      22.1  Severance  of  Interests.  In the  event  that  any  portion  of the
Designated Rail Corridor  becomes the subject of a condemnation or appropriation
proceeding or offer to acquire,  Pathnet's  interest (in its  Facilities  and/or
System and in its  occupation of the Segment)  shall be severed from  Railroad's
interest  (both  physical and  ownership  rights) in such  proceedings,  and the
parties agree to have any such condemnation or appropriation awards specifically
allocated between Pathnet's interest and Railroad's interest.

      22.2  Removal of  Facilities.  Should any Segment of the  Designated  Rail
Corridor  used by Pathnet for a part of  Pathnet's  Fiber  Optic  Communications
System  or  Facilities  be  condemned,   appropriated  and/or  acquired  by  any
governmental  agency (or other party  cloaked with the power of eminent  domain)
for  public  purpose  or use,  then to the  extent  required  by the  condemning
authority,  any  Facilities  or System of Pathnet  within such  Designated  Rail
Corridor not condemned, appropriated and/or acquired by such agency or authority
shall be promptly  removed by Pathnet at Pathnet's  cost,  unless  Pathnet makes
other arrangements with the condemning or appropriating agency or authority.

      22.3 Notice. Railroad shall promptly notify Pathnet of any condemnation or
appropriation  action filed against any portion of the Designated Rail Corridor.
Railroad shall also promptly  notify Pathnet of any threatened  condemnation  or
offer to acquire by any  governmental  agency (or other party  cloaked  with the
power of eminent domain)  affecting the Designated  Rail Corridor  (provided the
Railroad employees  administering this Agreement have actual knowledge thereof).
Further,  any  voluntary  sale to the  condemning  or  appropriating  agency  or
authority  pursuant to any threatened  condemnation or offer to acquire shall be
in accordance with the provisions of Article 21.

                                       20
<PAGE>

23.   PATHNET DISCONTINUANCE.

      23.1 In the event of any  Discontinuance  by  Pathnet  of its  Facilities,
System,  Segment or any  substantial  portion  thereof,  Railroad shall have the
option,  to be exercised  in  Railroad's  sole  discretion,  to  terminate  this
Agreement as to the affected  Segment(s)  upon written  notice to Pathnet.  Upon
such  termination,  removal  of  Pathnet's  Facilities  and System  within  such
affected Segment(s) shall be governed by Section 26.2 hereof.

24.   RAILROAD'S RIGHT TO TERMINATE OR REQUIRE SUSPENSION OF ACTIVITIES; FAILURE
      TO MAKE TIMELY PAYMENT

      24.1 Material  Breach;  Remedy.  If Pathnet or Railroad  fails to perform,
violates or defaults  under any material  terms or conditions of the  Agreements
("Material Breach"),  and fails to remedy any such Material Breach in accordance
herewith,  then and in that  event,  the  non-defaulting  party  shall  have the
following rights and remedies:

           (i) if the Material Breach (a) adversely  affects  railroad safety or
      operation,  or (b) relates to the payment of any fees and  expenses due to
      Railroad under the Agreements,  Railroad shall have the right to terminate
      this Agreement upon written notice to Pathnet; and

           (ii) if the Material  Breach is not of the type and nature  described
      in Subsection 24.1(i),  Railroad shall have the right, upon written notice
      to  Pathnet,   to  suspend   immediately   all  then  pending  and  future
      installation,  construction,  maintenance  and/or deployment on the entire
      Rail Corridor until such time as the applicable  Material  Breach is cured
      and  Pathnet  demonstrates  to  Railroad's  reasonable  satisfaction  that
      Pathnet has taken such steps and/or  implemented  such  procedures so that
      the particular Material Breach in question will not recur.

Upon  termination  as  provided  in this  Section  24.1,  removal  of  Pathnet's
Facilities and System shall be governed by Section 26.2 hereof. Railroad's right
to terminate this Agreement shall be limited to occurrences of Material Breaches
of the type and nature described in Subsection 24(i) above.

      24.2  Examples of Material  Breach.  For  purposes  of this  Article,  any
substantial noncompliance, or any repeated noncompliance, each of which might be
considered minor or singular,  may when considered in the aggregate constitute a
Material  Breach.  In  illustration,  but  without  limitation,  failure to give
required  notices,  or failure to give  required  approvals  without  cause,  or
failure to comply with final decisions under the Dispute  Resolution  provisions
of Article 25, may constitute a Material Breach.

      24.3 Notice and Cure Period. Pathnet and Railroad agree that neither party
shall  proceed  against the other for any  alleged  Material  Breach  before the
offending  party has had written notice and reasonable  time to respond and cure
such breach;  provided,  however,  that neither  party shall be required to give
time to  respond  and cure if any such  delay  will  cause  irreparable  harm or
increased risk of liability or injury. Reasonable time to respond and cure shall
for  purposes of  Subsections  24.1(i)(b)  and 24.1(ii) be presumed to be thirty
(30)  days,  and  for  purposes  of  Subsection  24.1(i)(a)  be  presumed  to be
forty-eight (48) hours. If such breach cannot



                                       21
<PAGE>

reasonably be cured within the  applicable  cure period,  but the party proceeds
promptly to cure the same and prosecutes such cure with due diligence,  the time
for curing such breach shall be extended for such  reasonable  period of time as
may be necessary  under the  circumstances  to complete  the cure,  but under no
circumstances  shall such additional  period extend beyond,  (i) for purposes of
Subsection 24.1(ii),  one hundred eighty (180) days without the specific written
approval of the non-breaching party, which such approval may be withheld in such
party's reasonable  discretion,  and (ii) for purposes of Subsection  24.1(i)(a)
and (b),  thirty (30) days. With respect to any Material Breach (i) which is not
cured by the  breaching  party within the  applicable  cure period,  or (ii) for
which an  opportunity  to cure is not  required to be given,  the  non-breaching
party  may,  at its sole  option,  cure any such  breach in the  manner it deems
appropriate.  In such event,  the  breaching  party,  within thirty (30) days of
written demand and without deduction,  set-off or abatement, shall reimburse the
non-breaching  party  for any and  all  expenses  incurred  as a  result  of the
non-breaching  party's  curing of such  default  together  with  interest at the
Default Rate. Nothing contained herein shall create an obligation on the part of
the  non-breaching  party to cure any uncured breach  existing at any time under
the Agreements.

      24.4 No Continuing Waiver. Any waiver by any party at any time of any of
its rights under the Agreements shall not be deemed to be a continuing waiver of
any breach or default or other matter subsequently occurring.

      24.5 Waiver of Certain  Damages.  Except as otherwise  provided in Section
6.5 of the License  Agreement,  neither party shall be liable to the other party
for  any  consequential,  indirect,  special,  exemplary  or  punitive  damages,
including, but not limited to, damages attributable to or based upon any loss of
present or future profits,  any loss of or injury to customer  goodwill,  or any
lost or foregone investments and opportunities.

25.   LIAISON; COORDINATION AND DISPUTES RESOLUTION.

      25.1  Specified  Disputes.  The parties intend that any disputes which may
arise between them relating to access to the Rail Corridor, or the design, plan,
construction,  installation,  operation,  maintenance,  repair, replacement, and
removal  of  Pathnet's  Facilities  or  System  or the  safe  and  uninterrupted
operation of the rail system of Railroad (a "Specified  Dispute") be resolved as
quickly  as  possible,  which  may,  in  certain  instances,  involve  immediate
decisions.  When such quick  resolution is not possible,  or depending  upon the
phase of installation of Pathnet's  Facilities and System,  the parties agree to
resolve such Specified Disputes as herein provided.

      25.2 Field Representatives.  Within thirty (30) days after the designation
by Pathnet of the Route Plan as  provided  in Exhibit B,  Railroad  and  Pathnet
shall each  designate  in writing  the  division or field  representative(s)  as
point(s) of contact for decision making concerning the Specified Disputes.

      25.3 Railroad Operations. Questions of Railroad operations or track safety
shall in all instances be referred to Railroad's Engineer, whose decision shall,
for any emergency  situation,  be made within twenty-four (24) hours, or for any
non-emergency situations, be made as provided in Section 25.7.

      25.4 Access. Specified Disputes concerning Pathnet's right of access to
the Rail Corridor during the Planning and Design and Installation and
Construction Phases, including use



                                       22
<PAGE>

of an  on-rail  plow  installation  machine  under  Exhibit  B,  or  during  the
Maintenance and Operation Phase, or access to or copies of Railroad's documents,
shall be referred  initially to the designated  representative  of the Engineer,
who shall render such decision within  twenty-four (24) hours.  Decisions of the
Engineer's designated  representative shall be referable within twenty-four (24)
hours of such decision,  by Pathnet to the Engineer of Railroad,  whose decision
shall be issued  within  twenty-four  (24) hours of the notice  from  Pathnet of
dispute with the authorized representative of Engineer.

      25.5 Reserved.

      25.6  Communications  Facilities.  Specified Disputes arising out of or in
conjunction  with  the  communications  System  or  Facilities  of  Pathnet,  of
Railroad,  or of both, or the capacity and/or  installation,  maintenance and/or
use of the same,  shall be referred  initially to Pathnet's  system  manager (or
other  representative  designated  by  Pathnet)  for  decision,  which  shall be
rendered, in writing, within thirty (30) days after submission.

      25.7 Remaining Specified Disputes. Any other Specified Dispute between the
parties shall be referred initially to the Engineer for decision, which shall be
rendered, in writing, within fifteen (15) days after submission.

      25.8 Mediation or  Arbitration.  Either party may appeal any decision made
pursuant to Sections  25.2  through 25.7 by  requesting  either  arbitration  or
mediation  within thirty (30) days after the date of receipt of such decision in
writing. Failure to request mediation or arbitration within such thirty (30) day
period shall result in such decision becoming final and conclusive. The selected
arbitration or mediation shall proceed in Jacksonville,  Duval County,  Florida,
in accordance with the Arbitration or Mediation  Resolution  Procedures attached
hereto as Exhibit K. Any arbitration decision or mediation  agreement,  or other
final decision herein, may be enforced by any court having jurisdiction hereof.

      25.9 Work Pending  Resolution of Specified  Dispute.  During the period in
which any Specified  Dispute is unresolved,  any work on the Rail Corridor by or
for Pathnet  shall  commence or proceed only with maximum  security for Railroad
operations,  as determined  by Railroad's  Engineer,  and the  determination  or
allocation  of  any  costs  or  additional  costs  therefor  shall  be  resolved
thereafter in accordance with this Article.

26    TERMINATION; REMOVAL.

      26.1  Partial  Termination.  Pathnet may  terminate  the  Agreements  with
respect to any individual  Segments of the Designated  Rail Corridor at any time
during the Term by providing  Railroad with six (6) months' prior written notice
of such  termination.  Such  termination  shall  be  only  with  respect  to the
specified   Segment(s)  of  the  Designated  Rail  Corridor  identified  in  the
termination  notice and shall not affect the continuation of the Agreements with
respect to the remaining  Segments of the Designated  Rail  Corridor.  With such
partial termination, all further obligations (other than obligations which arose
prior to such  termination  and any  provisions  hereof  which are  intended  to
survive the  expiration  or other  termination)  shall cease only as to affected
Segment(s) and all terms and conditions of the Agreements shall remain unchanged
and in full force and effect as to the remaining  Segments within the Designated
Rail Corridor. In the event of any partial termination hereunder,  Pathnet shall
not be entitled to any refund, rebate or



                                       23
<PAGE>

set off  relating  to the  consideration  paid or given  pursuant to the License
Agreement nor any adjustment to the mileage bank.

      26.2 Removal Upon  Termination.  Within ninety (90) days of the expiration
or earlier or partial  termination  of the  Agreements (or such longer period as
may be reasonably  necessary to remove Pathnet's  Facilities and System provided
Pathnet  begins  removal  within  such  ninety  (90) day  period  and  continues
diligently to completion),  Pathnet,  at its own risk,  cost and expense,  shall
remove all above ground Facilities, System and appurtenances from the Designated
Rail  Corridor,  all  underground  Optical  Fibers,  and such other  underground
Facilities,  System and appurtenances as Pathnet desires or Railroad  reasonably
requests so as to avoid interference with Railroad  operations,  and restore the
Designated  Rail  Corridor  and  other  affected  property  of  Railroad  to the
functional  or  operational  condition  existing  prior to the  construction  or
installation of such Facilities,  System and appurtenances.  If Pathnet fails to
timely remove the System and Facilities and restore the Designated Rail Corridor
and other affected property as provided in the preceding sentence, Pathnet shall
be deemed to have abandoned such  Facilities and System in place, in which event
such  Facilities and System shall become the property of Railroad,  for purposes
of resale,  use or  operation  by  Railroad  in any  manner and for any  purpose
Railroad deems appropriate,  in its sole discretion;  or Railroad may cause such
removal and  restoration  to be performed and all costs  incurred by Railroad in
such removal and  restoration,  together  with  interest  thereon at the Default
Rate, shall be due and payable by Pathnet to Railroad upon written demand.

      26.3 Continuing Obligations.  The expiration or earlier termination of the
Agreements shall not release any party from any liability or obligation incurred
prior to such  expiration  or  termination  or terminate any right or obligation
which would have  continuing  relevance  after such expiration or termination of
this Agreement.  Without limiting the foregoing, the indemnification obligations
of Pathnet,  the rights of Railroad to review  Pathnet's books and records,  and
such other provisions which are reasonably intended to have continuing validity,
shall survive the expiration or earlier termination of the Agreements.

27.   DOCUMENT CONFIDENTIALITY.

      27.1  General.   Railroad  and  Pathnet  understand  and  agree  that  the
Agreements,  and all materials,  maps,  documents and other information that are
referred  to therein or  attached  thereto,  exchanged  between  the  parties in
negotiating the Agreements,  or utilized in fulfilling the provisions and intent
hereof or thereof,  are and shall be confidential,  except as may be required by
law or  regulation.  Any public  announcement  or press release  concerning  the
Agreements  by either party shall be subject to the prior  approval of the other
party, which approval shall not be unreasonably withheld.

      27.2 Restricted  Distribution.  Railroad and Pathnet each agree to respect
such confidentiality,  and shall restrict the distribution of the Agreements and
such  materials  only to those Persons  designated  to implement the  provisions
hereof,  and shall not  disclose or furnish to any third  parties  copies of the
Agreements  or any  materials  referred  to herein,  without  the prior  written
consent of the other party hereto or,  subject to Section 27.3, a Court Order or
Administrative  Subpoena  requiring  same,  except as may be  required by law or
regulation.  The parties agree that in distributing  copies or portions of these
materials to Persons necessary to


                                       24
<PAGE>

implement  the  same,  such  copies  or  materials  shall be  clearly  marked as
confidential,   and  indicating  that  the  further  distribution,   copying  or
reproduction of the same is expressly prohibited.

      27.3 Redacted Copy. The parties shall jointly  prepare  redacted copies of
the Agreements which may be furnished,  as necessary to implement the provisions
hereof, to (a) Arbitration  Panel, (b) Court, (c) Administrative  Tribunal,  (d)
mortgagee(s)  or other  financial  backers of either party,  and (e) prospective
users of Pathnet's Conduit  (Innerduct),  Cable, Optical Fiber or other Facility
authorized in accordance with the Agreements.

      27.4 Injunctive  Relief.  The parties  recognize and acknowledge  that any
actual or  threatened  disclosure  of such  confidential  information  by either
party, its agents, employees or contractors,  will cause irreparable harm to the
other  party,  such that  monetary  remedies  available  at law will not provide
adequate relief,  and therefore the aggrieved party shall be entitled to receive
injunctive relief as an equitable remedy.

      27.5 No Right to  Non-Material  Information.  Neither party shall have the
right to obtain  any  information  or  documents  from the  other  which are not
material to the provisions or implementation of the Agreements.

28.   GENERAL TERMS.

      28.1 Entire  Agreement.  The  Agreements,  and any exhibits or  amendments
which may be attached thereto from time to time, constitute the entire agreement
between the parties hereto with respect to the subject matter thereof and may be
modified only by a writing executed by both parties.

      28.2 Incorporation by Reference. The Agreements, as amended by the parties
from time to time in accordance  therewith,  shall be  incorporated by reference
into any Build Supplement, separate finance agreement or other document executed
between the parties,  and such  incorporation  shall include all  amendments and
exhibits to the Agreements,  even if made or attached  subsequent to the date of
the Agreements.

      28.3 No Third Party  Beneficiaries.  Except as  otherwise  provided in the
Agreements,  nothing contained therein,  in any provision or exhibit thereof, or
in any  agreement  or  provision  included  by  reference,  shall  operate or be
construed as being for the benefit of any third person.

      28.4 Interpretation. Neither the form of the Agreements, nor any provision
therein,  shall be  interpreted or construed in favor of or against either party
hereto as the sole drafter thereof.

      28.5 Force Majeure. The parties agree that a party shall not be liable for
its failure to perform its obligations under the Agreements during any period in
which such  performance is delayed by fire,  flood,  war,  embargo,  riot, labor
strike  or  unrest,  the  intervention  of  any  government   authority,   train
derailment,  or any other event or condition  outside the reasonable  control of
such party,  provided that such party  promptly  notifies the other party of the
delay and the reason(s) for such delay.  The provisions of this paragraph  shall
not apply to Pathnet's payment obligations under the License Agreement.



                                       25
<PAGE>

      28.6  Reasonableness.  Wherever  the  term  "reasonable"  is  used  in the
Agreements,  the term shall mean:  for  Railroad,  application  of standard  and
established railroad  engineering,  operating and safety rules,  regulations and
procedures;  for  Pathnet,  application  of  standard  and  established  carrier
engineering and operating rules.

      28.7  Approval or Consent.  Wherever the term  "approval"  or "consent" is
used in the Agreements,  unless otherwise specifically qualified, the term shall
mean that such  "consent"  or  "approval"  shall not be  unreasonably  withheld,
delayed or conditioned.

      28.8 Parties.  Wherever used in the Agreements,  the terms  "Railroad" and
"Pathnet"  shall be  construed  in the  singular  or plural as the  context  may
require or admit, and shall include the permitted successors and assigns of such
parties.

      28.9   Severability.   The  Agreements  are  executed  under  the  current
interpretations  of  applicable  federal,  state,  county,  municipal  and local
statutes,  ordinances  and  laws.  However,  each  separate  division  (section,
paragraph,  clause, item, term, condition,  covenant or agreement) thereof shall
have  independent  and severable  status for the  determination  of the legality
thereof.  If any separate division is determined to be void or unenforceable for
any  reason,  such  determination  shall  have no effect  upon the  validity  or
enforceability of each other separate division, or any combination thereof.

      28.10 Governing Law; Venue. The Agreements shall be construed and governed
under  the laws of the State of  Delaware.  It is the  particular  intent of the
parties that the indemnification  obligations  contained in the Agreements shall
be enforceable and shall not be deemed to be against public policy.  The parties
consent to the personal  jurisdiction  of and to  exclusive  venue in the United
States  District Court in and for the Middle  District of Florida,  Jacksonville
Division.

      28.11 Assignability.

            (a) Except as  otherwise  specifically  provided in the  Agreements,
Pathnet  shall not assign or transfer  any right or  interest in the  Agreements
without the prior written consent of Railroad,  which consent may be withheld in
Railroad's sole discretion. The above requirement for consent shall not apply to
(i) any  disposition of all or  substantially  all of Pathnet's stock or assets;
(ii) any corporate merger, consolidation or reorganization, whether voluntary or
involuntary,  involving  Pathnet;  or  (iii) a  sublease  or  assignment  of the
Agreements  (in whole or in part) by  Pathnet  to a  subsidiary,  affiliate,  or
parent company, controlled by, under common control with, or controlling, either
indirectly or directly, Pathnet, provided that no assignment not consented to by
Railroad shall relieve  Pathnet of any of its  obligations or liabilities  under
the Agreements and, provided further, that such Assignee agrees in writing to be
bound by the terms of the Agreements.  Nothing herein shall prohibit Pathnet (i)
from  involving  contractors,   or  strategic  or  co-development   partners  in
construction  and  operation  of the fiber  optic  facilities,  on such terms as
Pathnet may determine in its sole  discretion,  provided all such activities are
conducted  in  accordance  with the terms of the  Agreements,  and that  Pathnet
remains  fully liable for all  obligations  thereunder;  and (ii) from  granting
liens or other  security  interests in the fiber optic  facilities  or Pathnet's
rights under the Agreements in connection  with  financing or  investments  made
available to Pathnet; provided that all such parties agree that, if and to the

                                       26
<PAGE>

extent they acquire an ownership interest thereunder, they shall be bound by and
shall comply with the terms of the Agreements.

            (b) Upon  request by  Pathnet,  Railroad  shall  execute  reasonable
documentation  to be provided by Pathnet  acknowledging  the rights of Pathnet's
lender(s)  ("Lender") to obtain  ownership of any fiber optic  facilities if the
Agreements  are still in effect and  Pathnet is in  material  default  under the
terms of Pathnet's loan to Lender,  provided,  however, that in such case Lender
shall agree in writing  that it shall become an assignee to the  Agreements  and
shall become subject to all rights and obligations of Pathnet under the terms of
the  Agreements  (and Pathnet also shall remain  subject to all  obligations  of
Pathnet  under the  Agreements).  In addition  to the rights  granted to Pathnet
under the Agreements,  Pathnet's  Lender shall have the additional right to take
possession,  sell,  assign or  otherwise  transfer  any fiber optic  facilities,
including the right to operate,  or permit a third-party  to operate,  any fiber
optic  facilities,  provided  such  operation  shall be subject to all terms and
conditions of the  Agreements  and provided  further that Railroad shall approve
such party, in Railroad's reasonable discretion.

            (c)  Railroad  may  assign  the  Agreements  to any  Affiliate,  any
purchaser(s)  of the Designated  Rail Corridor to the extent  applicable to such
Rail Corridor,  or any Person in connection with any merger or  consolidation of
Railroad,  provided that any such  assignment  shall be subject to the terms and
conditions of this Agreement.

      28.12 Time is of Essence. Time is of the essence in the performance of
each party's obligations under the Agreements.

      28.13  Incorporation of Exhibits.  All exhibits attached to the Agreements
are  incorporated  by this  reference and made a part of the  Agreements for all
purposes.

      28.14 Multiple Counterparts. Each of the Agreements may be executed in
several counterparts, each of which shall be deemed an original, and such
counterparts shall constitute one and the same instrument.

      28.15  WAIVER  OF JURY  TRIAL.  RAILROAD  AND  PATHNET  HEREBY  KNOWINGLY,
VOLUNTARILY AND INTENTIONALLY WAIVE ANY RIGHT EITHER MAY HAVE TO A TRIAL BY JURY
IN RESPECT OF ANY  LITIGATION  BASED ON,  ARISING OUT OF, UNDER OR IN CONNECTION
WITH THE AGREEMENTS OR ANY DOCUMENTS  CONTEMPLATED  TO BE EXECUTED IN CONNECTION
THEREWITH OR ANY COURSE OF CONDUCT, COURSE OF DEALINGS, STATEMENTS (WHETHER ORAL
OR WRITTEN) OR ACTIONS,  RIGHTS OR OBLIGATIONS OF EITHER PARTY ARISING OUT OF OR
RELATED IN ANY MANNER TO THE  AGREEMENTS  (INCLUDING,  WITHOUT  LIMITATION,  ANY
ACTION TO RESCIND OR CANCEL THE  AGREEMENTS OR ANY CLAIMS OR DEFENSES  ASSERTING
THAT EITHER OF THE AGREEMENTS WAS  FRAUDULENTLY  INDUCED OR IS OTHERWISE VOID OR
VOIDABLE).  THIS WAIVER IS A MATERIAL  INDUCEMENT  FOR THE PARTIES TO ENTER INTO
AND ACCEPT THE AGREEMENTS.

      28.16 Authorization. Railroad and Pathnet represent and warrant that each
has obtained all necessary corporate approvals authorizing the execution and
delivery of the Agreements, and



                                       27
<PAGE>

that the execution and delivery of the Agreements  will not violate the articles
of  incorporation  or by-laws of such  corporation,  and will not  constitute  a
material breach of any contract by which such corporation is bound.





                                       28
<PAGE>





            EXECUTED as of the Effective Date.



Witness:                            CSX TRANSPORTATION, INC.,

                                    For  itself  and as  Operator  for New  York
                                    Central Lines LLC, a wholly-owned subsidiary
                                    of Consolidated Rail Corporation


   /s/ Shawn illegible                  By: /s/ J. Randall Evans
- - - --------------------                     --------------------------------
   illegible                          Name:
- - - --------------------                Title:

Witness: illegible                   PATHNET TELECOMMUNICATIONS, INC.
      Matthew Harris
                                       By:   /s/ Richard Jalkut
                                         --------------------------------
                                      Name:
                                     Title:  CEO



                                       29
<PAGE>
                                   EXHIBIT A-1

                 [To be provided upon designation of the route]

                                   EXHIBIT A-2

                 [To be provided upon completion of the route]



<PAGE>


                                    EXHIBIT B

1.   ROUTE DESIGNATION; DOCUMENTATION; INSPECTION; ACCESS.

     1.1  Documentation.  Railroad shall furnish to Utility,  electronically  if
available,  at Utility's cost,  copies of Valuation Maps with available  indices
thereto  within  thirty  (30)  days of the date of  Utility's  written  request.
Railroad shall make available to Utility,  for  reproduction  at Utility's cost,
all available Railroad engineering documents relating to bridges,  overpasses or
tunnels on or along such Route Plan.  Railroad shall also furnish,  at Utility's
cost,  copies of maps or other  documents to assist Utility in  determining  the
identity  and  location of other  users of those  portions  of  Railroad's  Rail
Corridor  designated on Utility's Route Plan. The furnishing of maps,  documents
or other materials hereunder,  however,  shall not be a guarantee by Railroad of
the accuracy or completeness of same.

     1.2  Inspection.  Railroad  agrees to  participate  with Utility in a joint
inspection of those  portions of the Railroad  Corridor  designated on Utility's
Route Plan for the  purpose of  identifying  problem  areas and  defining  final
Conduit Right-of-Way routes or alternatives. Railroad also agrees to participate
in any  additional  joint  inspections  that may be required  for the purpose of
detailing and developing solutions for problem areas.

     1.3 Route Plan. Prior to the preparation of detailed  Construction Plans as
contemplated  in Section 1.7,  Utility shall submit to Railroad a proposed Route
Plan marked on Railroad  Valuation Maps.  Railroad shall review and, through its
Engineer,  approve or reject the  proposed  Route Plan.  If rejected for reasons
other  than  Railroad's  plans to Abandon a Segment  of the  Railroad  Corridor,
Railroad  shall  cooperate  with  Utility  to  locate  an  alternative  mutually
acceptable  route along Railroad's Rail Corridor to the extent  available.  Upon
Railroad's  approval of Utility's  proposed Route Plan, such approved Route Plan
shall be attached to this Agreement as Exhibit A-1, for the purpose, among other
things, of defining the Designated Railroad Corridor.

     1.4 Planning and Design  Phase.  From and after the date of  submission  by
Utility  to  Railroad  of  Utility's  Route  Plan,  Utility  and its  designated
employees,  agents  and  representatives  shall have the right to enter upon any
portion of Rail  Corridor  shown on such Route Plan for a period of one  hundred
eighty (180) days for the purpose of surveying and inspecting the same,  subject
to all applicable notice,  approval and other applicable  requirements contained
in this Agreement (the "Planning and Design Phase").

     1.5 Conditions of Right of Entry. All surveys or route  inspections (or any
other entry by Utility  hereunder) shall be made upon reasonable  advance notice
to and at times  satisfactory  to  Railroad,  in a manner so as not to interfere
with operations of Railroad,  and shall be at the sole risk, cost and expense of
Utility. Rights of entry shall not be unreasonably withheld or delayed.

     1.6  Construction Planning Schedule. Utility shall furnish to Railroad a


                                                                               1
<PAGE>


proposed schedule of construction and installation  (commencement and completion
dates) on each  portion of the  Designated  Rail  Corridor  to be  utilized  for
Utility's System. Said schedule of construction shall be sufficient to allow the
coordination of Railroad, Utility and construction personnel and operating train
movements.  Utility  shall  schedule  installation  and  construction  to  avoid
disruption of Railroad operations  (including operation of freight and passenger
trains.  Utility may request  Railroad to  reschedule  or divert  trains,  where
possible, to minimize disruption of Utility's construction schedule, and, to the
extent  possible and  practical,  as solely  determined by Railroad's  Engineer,
Railroad shall make such diversion or rescheduling.  Utility further  recognizes
that regulations of the Federal Railroad  Administration (FRA) may require "Slow
Orders"  to be issued by  Railroad  to trains  operating  in areas of  Utility's
construction,  and that such "Slow Orders" may cause delays in train  movements,
including delays in movement of freight and passenger trains.  Additional costs,
expenses  or losses to Railroad  generated  by any "Slow  Order",  rescheduling,
delay or diversion  (including detours or rerouting)  resulting from any request
of or actions or omissions of Utility,  its  employees,  agents,  contractors or
subcontractors,  or which results from any Fouling of Track(s),  plus any damage
to or destruction of Railroad's  signals,  tracks or other facilities  resulting
therefrom, shall be reimbursed by Utility.

     1.7  Construction  Plans.  Whenever Utility desires to install or construct
any part or  portion  of its  Facilities  or System,  including  any  structural
attachments,  within the Designated Rail Corridor,  Utility shall submit written
notice (the "Construction  Notice") in two (2) signed counterparts,  accompanied
by four (4) copies of the relevant  Construction  Plans, to Railroad's  Engineer
for consent and approval of Railroad,  which approval shall not be  unreasonably
withheld or delayed.  Upon approval by Railroad,  one (1) signed  counterpart of
the  Construction  Notice  shall be returned by  Railroad.  Upon  receipt of the
signed  counterpart  of the  construction  Notice by Utility,  the  Construction
Notice and the  Construction  Plans so  approved  shall be  considered  as being
incorporated into and made a part of this Agreement for all purposes.

     1.8 Limited Scope of Approval. Railroad's right of approval of Construction
Plans,  and the location of Utility's  Facilities and System,  and the nature of
Transmission  Technology shall apply only to the extent that construction or use
of  Facilities,  System or  Transmission  Technology  may affect train or signal
operations or the use of Railroad's Rail Corridor.

     1.9  Installation  and  Construction  Phase.  From  and  after  the date of
Railroad's approval of Utility's Construction Plans, as provided in Section 1.7,
Utility, its employees,  agents and/or contractors,  shall have the right, for a
period of one hundred  eighty  (180) days,  to enter and  construct  and install
Utility's  Facilities and System on that Segment  designated in the Construction
Plans.  Utility shall  coordinate with, and secure advance written approval from
Railroad's Engineer, for all access to track and Restricted Working Area of Rail
Corridor,  understanding  that the  operation  of Railroad  trains over any Rail
Corridor shall have priority.  Construction  and  installation  shall also be in
accordance with Fiber Optic Installation SOP (Standard Operating Procedure,  MWI
1905-01, Issued 6/30/98), a copy of which is attached hereto as Exhibit M.

     1.10 As-Built Drawing. Within ninety (90) days after completion of


                                                                               2
<PAGE>


construction and installation of each Segment of Utility's System, Utility shall
furnish to  Railroad  an  As-Built  Drawing,  referencing  Railroad  stationing,
Valuation Maps and mileposts for such Segment,  which, when approved by Railroad
and as  amended  from time to time,  shall be  collectively  attached  hereto as
Exhibit A-2.

     1.11  Maintenance  and Operation  Phase.  Only after  construction  of each
Segment  of  Utility's  System  and  approval  by  Railroad's  Engineer  of  the
applicable  As-Built  Drawing,  shall  Utility,  its  employees,  agents  and/or
contractors, be permitted operational and maintenance access to such Segment, in
accordance  with  the  provisions  of  this  Agreement.  With  respect  to  each
independent Segment, the period after the Planning and Design Phase but prior to
the approval of the applicable  As-Built  Drawing is herein sometimes called the
"Installation  and Construction  Phase" and the period after the approval of the
As-Built  Drawing is herein  sometimes  called the  "Maintenance  and  Operation
Phase."

     1.12 Reinstallation, Replacement and Removal. The provisions of this
Article 1 shall apply to any reinstallation, replacement or removal of any
Facilities by Utility.

2.   SURVEYS AND RECORDS; COSTS.

     2.1 Railroad Maps and Surveys.  Railroad  shall, at Utility's cost and upon
Utility's written request,  furnish to Utility a copy of its current System Map,
System Diagram Map and Valuation Maps for Segments  identified in the Route Plan
as System Segments.  Railroad,  however,  shall not be deemed to have guaranteed
the accuracy of any map, survey or related records made available to Utility.

     2.2  Utility Maps, Surveys and Records.

          (a) If Utility  performs or contracts to perform formal surveys of the
Rail Corridor,  or any constructed Conduit  Right-of-Way,  Utility shall furnish
Railroad,  upon request,  a copy thereof,  at Utility's cost,  subject to lawful
limitations of survey contracts and applicable laws. Utility shall not be deemed
to have  guaranteed  the  accuracy  of such  surveys.  If Utility is required or
chooses to secure  and/or file any surveys  for any of its  Facilities,  Utility
shall bear the total cost thereof.

          (b) Any copies or records made or data compiled by Utility relating to
Railroad's  Rail Corridor  (including but not limited to: maps;  plans;  photos;
video tapes; motion pictures; notes; survey data; cassette tapes and other types
of records and measurements) shall become the sole property of Utility. However,
subject to the document confidentiality provisions hereof, Utility shall provide
such data or records to Railroad.

          (c) Utility shall, at its expense,  furnish Railroad,  annually, a map
of  Utility's  Fiber Optic  Communication  System  ("Fiber  Optic  System  Map")
depicting the location of Utility's Facilities and System on the Designated Rail
Corridor and fiber count by Segment.

          (d)  Utility shall update its Fiber Optic System Map after each new


                                                                               3
<PAGE>


Segment is constructed, and shall include a copy of the relevant portion thereof
with each As-Built Drawing required in Section 1.10.

3.   LOCATION OF UTILITY FACILITIES.

     3.1  Perimeter  Location.  Occupation  by  Utility  of  the  Rail  Corridor
(including  any  portion  that shall  pass  along or through an active  operated
Railroad yard,  terminal or station)  shall be confined  where  practical to the
outer  perimeter  of the Rail  Corridor,  yard,  etc.  Minimum  distance  to the
centerline  of the nearest  track shall be eleven  feet (11')  unless  otherwise
specifically  agreed in writing by Railroad.  The exact location and depth shall
be determined on a  case-by-case  basis during the Planning and Design Phase for
the Facilities.

     3.2 Railroad  Tunnels.  The installation of Cable in Railroad tunnels shall
be avoided whenever possible, by the installation of Cable over Railroad tunnels
within Railroad Rail Corridor.  Where such  installation  over the tunnel is not
reasonably possible, and after specific written approval by Railroad's Engineer,
Cable  shall be laid or  installed  within  existing  conduits  or ducts,  where
available and in usable  condition,  or within suitable  conduit  (nonflammable,
inert material pipe) installed by Utility on the floor level of the tunnel, at a
point farthest away as practical from the nearest operated rail or track.

     3.3  Entrance  into Tunnel or onto  Bridge.  Any entrance by Utility or its
employees, agents or contractors into Railroad's tunnel, onto Railroad's bridge,
or on Railroad's property adjacent to a bridge or tunnel for any purposes, shall
be in accordance with the provisions of Article 12 of this Agreement.

4.   CONDUIT (INNERDUCT)/CABLE INSTALLATION AND CONSTRUCTION.

     4.1 Underground Installation.  In all situations where reasonably possible,
Conduit   (Innerduct)   or  Cable  shall  be  installed   by  Utility,   or  its
contractor(s),  underground,  and in  accordance  with the  "Specifications  for
Underground  Cables Occupying Railroad Rail Corridor" attached hereto as Exhibit
E.   Notwithstanding  any  contrary  provisions  contained  in  Exhibit  E,  the
installation  depths  and  limits of Cable or  Conduit  (Innerduct)  shall be as
follows:

          (a) Where Cable crosses underneath tracks, whether mainline, secondary
or industrial, Cable must be installed in Conduit (Innerduct);

          (b)  Cable to be installed within fifteen linear feet (15') of the
centerline of any tracks, shall be installed in Conduit (Innerduct);

          (c) Conduit  (Innerduct)  installation is not required for Cable to be
installed more than fifteen linear feet (15') from the centerline of any tracks;

          (d) The depth of Conduit  (Innerduct)  under  tracks  shall be no less
than sixty  inches  (60")  below the  bottom of ties,  for a length at least two
linear feet (2') beyond the outer end of such ties;


                                                                               4
<PAGE>


          (e) Where on-rail  plowing is authorized,  as provided  herein,  Cable
and/or  Conduit  (Innerduct)  shall  be  installed  at a depth  of no less  than
forty-two inches (42") below ground surface;

          (f) Cable or Conduit  (Innerduct) to be installed within twelve linear
feet (12') of the centerline of the nearest track shall be at a depth of no less
than forty-two inches (42") below ground surface;

          (g) Cable or Conduit  (Innerduct)  to be installed  twelve linear feet
(12') or more away from the  centerline  of the nearest track shall be installed
at a depth of no less than thirty-six inches (36") below ground surface.

     4.2 On-Rail Plow. Subject to the sole discretion and approval of Railroad's
Engineer for exact  location of use,  scheduling  and  utilization of an on-rail
plow  machine,  Utility  shall  have  the  right to  utilize  such  machine  for
construction  purposes.  If such use is  approved,  Railroad  will  provide  all
necessary work trains and crews at Utility's sole cost and expense to facilitate
use of such  machine.  When  within  fifteen  feet  (15') of any  signal  wires,
culverts,  grade crossings or other Railroad facilities,  Utility must cease all
rail plow  installation and (a) utilize only  hand-trenching,  behind (trackside
of) any Railroad facilities or obstructions (signals, signal boxes, relay cases,
etc.)  which  have wire or Cable  connections  to any  track,  and/or  (b) place
Utility  Conduit  (Innerduct)  or Cable only to the front  (fieldside)  thereof.
Utility shall pay for any repairs to signal wires, culverts,  grade crossings or
other Railroad facilities damaged by said plowing or trenching.

     4.3  Aerial  Attachments.  In  situations  where  Utility  determines  that
underground installations are not reasonably practicable, installations shall be
by aerial  attachments in accordance with the Association of American  Railroads
"Communications  Manual Part 1-B-1,  Paragraphs A through S" and "Specifications
for the Construction of Railroad Communication Pole Lines, Section K", copies of
which are  attached  hereto  collectively  as Exhibit F.  Details of each aerial
section of Cable shall be shown where  appropriate as a part of the Construction
Plans and As-Built Surveys  furnished to Railroad for approval as required under
this Agreement.

     4.4 Water Crossings.  In the event that Utility elects to perform submarine
Conduit (Innerduct) or Cable installation rather than installation by attachment
to Railroad's  existing pole lines or fixed or movable  bridges,  such submarine
installation  shall be  performed by Utility or its  contractor(s)  at Utility's
sole risk, cost and expense.

     4.5  Bridge  Attachments.   Attachment  to  all  Railroad  bridges,   where
attachment to an adjacent parallel pole line is not desired by Utility, shall be
as prescribed in the  "Specifications  for the  Attachment of Cables to Railroad
Bridges", a copy of which is attached hereto as Exhibit G.

     4.6  Public Roadway Crossings. Cable or Conduit (Innerduct) crossing under
public roadways shall be at a location and depth as required by any applicable
federal, state or local laws, regulations or lawful orders. To the extent not
pre-empted by such


                                                                               5
<PAGE>


authorities, such installation shall also be in accordance with Exhibit E.

     4.7 Public Utility Crossings. Cable or Conduit (Innerduct) crossing over or
under public  utilities  shall be located and installed in  accordance  with all
applicable  federal,  state and local laws,  regulations and lawful orders,  and
such  lawful  requirements  as may be  stipulated  by  any  governmental  agency
(including operators of rail passenger services) or public authority.  If in the
conduct of any work, any changes or alterations  in pipelines,  sewers,  drains,
conduits,  fences,  power,  signal or  communication  lines or other  utility or
Railroad  facilities are necessary  (either temporary or permanent) by reason of
the  foregoing or the  requirements  of Railroad,  such changes shall be made or
caused to be made solely by Utility at  Utility's  sole risk,  cost and expense;
provided,  however,  that  costs and  expenses  for any such  work,  changes  or
alterations  necessitated  by any other  third party shall be paid by such third
party.

     4.8  Emergency Repair. Emergency Cable installation, maintenance or repair
methods shall be as set forth in Exhibit H attached hereto.







                                                                               6
<PAGE>


                                    EXHIBIT C

                                      LEASE

     THIS LEASE, made as of this ____ day of ______________, ______, between CSX
TRANSPORTATION,  INC., a Virginia corporation, [as operator for New York Central
Lines LLC, a Delaware  limited  liability  company]  whose  address is 500 Water
Street, Jacksonville,  Florida 32202 ("Lessor"), and Pathnet Telecommunications,
Inc.,  a  Delaware  corporation,   whose  address  is  1015  31st  Street  N.W.,
Washington, D.C. 20007 ("Lessee"):

                                    RECITALS

     A.   Lessor and Lessee have entered into those  certain  Fiber Optic Access
          and License Agreement and Right of Way Operating Agreement dated as of
          ____________________, as amended and supplemented from time to time by
          the parties (the "Base Agreement").

     B.   The Base Agreement  contemplates Lessee's use of certain land owned by
          Lessor for the placement of non-cable  facilities  including  Repeater
          (Regen)  Sites,  or power or auxiliary  power  stations,  or sites for
          construction facilities or temporary storage of materials and fuel for
          power stations.

     C.   In order to implement the provisions of the Base Agreement, Lessor and
          Lessee  desire to enter  into this  Lease for the  premises  described
          herein and on the terms and conditions set forth herein.

     NOW, THEREFORE,  in consideration of the mutual covenants set forth herein,
the rental to be paid by Lessee and other good and valuable  consideration,  the
receipt  and  sufficiency  of which are hereby  acknowledged,  Lessor and Lessee
hereby agree as follows:

1.   INCORPORATION OF RECITALS.

               The parties represent and acknowledge that the foregoing recitals
are true and correct and are incorporated herein by this reference.

2.   DESCRIPTION OF PREMISES.

               Lessor does  hereby  lease unto  Lessee  that  certain  parcel of
unimproved land (exclusive of tracks and roadbed) located and more  particularly
described or depicted on Exhibit "A" attached  hereto and by this reference made
a part hereof (the "Premises").

3.   CERTAIN DEFINITIONS.

     3.1 General Interpretive Principles.  For purposes of this Lease, except as
otherwise  expressly  provided herein or unless the context otherwise  requires:
(i) the terms used herein  include the plural as well as the singular,  (ii) the
use of any gender herein shall be deemed to include the other gender,  (iii) the
word "including"  means  "including,  but not limited to," and (iv) the headings
used herein shall not describe,  interpret, define or limit the scope, extent or
intent of any provision hereof.

     3.2 Definitions. Except as otherwise expressly defined in this Article 3 or
otherwise  herein,  the  capitalized  terms  used in this  Lease  shall have the
meanings set forth in the Base Agreement.

               3.2.1 "Lessee"  shall mean Lessee as defined in the  introductory
paragraph   of  this  Lease,   any   successor  by  merger,   consolidation   or
reorganization, and its permitted assigns.

               3.2.2 "Lessor"  shall mean Lessor as defined in the  introductory
paragraph of this Lease,  any of its  predecessor  railroads,  any  successor by
merger, consolidation or reorganization, and its permitted assigns.

               3.2.3  The  term  "damages"  shall  mean  any  and  all  damages,
including,  but not limited to, civil,  criminal,  compensatory,  consequential,
direct, indirect, treble, punitive, exemplary and special damages and all other


                                        1
<PAGE>


damages and penalties of any kind available at law and/or in equity.

4.   PERMITTED USE.

     Lessee  shall use and occupy the Premises in  accordance  with Section 21of
the Base Agreement, and for no other purpose (the "Permitted Use").

5.   RENT.

     Lessee  shall pay to Lessor,  as base rent for the  Premises,  the sum of *
DOLLARS ($*.00) per * payable * in advance from the date hereof for the duration
of the Term ("Base Rent"). Lessee shall pay all real estate taxes levied against
the Premises and the cost of any Lessee  improvements placed on the Premises and
all costs of or  charges  for  water,  sewage,  electricity,  heat and any other
utilities furnished to the Premises.  If any of the foregoing is paid by Lessor,
Lessee shall reimburse Lessor, as additional rent, within thirty (30) days after
presentation  to Lessee of bills therefor  ("Additional  Rent").  The payment by
Lessee of any sum in  advance  shall not  create  an  irrevocable  lease for the
period for which the same is paid.  Lessor  reserves  the right to  periodically
adjust the Base Rent any time after the expiration of twelve (12) months (and to
adjust any adjusted rent  thereafter),  by giving  notice of such  adjustment to
Lessee at least sixty (60) days prior to the effective date of such  adjustment.
Lessee's continued occupation of the Premises after such effective date shall be
deemed an acceptance of such adjusted Base Rent.

6.   APPROVAL OF PLANS, TRACK CLEARANCE.

     Lessee,  prior to placing any  improvement  on the  Premises,  shall submit
plans to, and secure approval in writing of, Lessor,  which such approval may be
withheld in Lessor's sole discretion.  Lessee shall not erect, place or allow to
be erected or placed on the  Premises  any  buildings,  structures,  fixtures or
obstructions of any kind, either temporary or permanent, within twenty-five feet
(25') of the  centerline of the nearest  track,  unless Lessee obtains the prior
written  consent of Lessor,  which may be withheld in Lessor's sole  discretion;
provided that the foregoing shall not be construed to permit any track clearance
less than the minimum required by any applicable law, rule, order or regulation.
Any  approval by Lessor of any  improvement  or  alteration  made by Lessee,  or
failure of Lessor to object to any work done or material  used, or the method of
construction  or  installation,  shall  not  be  construed  as an  admission  of
responsibility  by Lessor or as a waiver of any of  Lessor's  rights  under this
Lease.

7.   FIRE PREVENTION.

     Lessee shall  cooperate with the Risk  Management  Department of Lessor and
shall  promptly  comply  with  fire  prevention   measures   requested  by  said
Department.  Lessee shall make no electrical installations or alterations in and
to the improvements or electrical or other circuits  (whether for power,  light,
heat or other  purposes) now or hereafter  located on the Premises,  except by a
duly  licensed  electrician,  and shall make no  installation  of  natural  gas,
propane,  kerosene or other combustion fuel heating or cooling units,  except by
licensed  heating or cooling  contractor.  No such  alterations or installations
shall be made  without  prior  written  approval  of  Lessor's  Risk  Management
Department, which may be withheld in its sole discretion.

8.   PERMITS, ORDINANCES, REGULATIONS:

     8.1 Lessee, at Lessee's sole cost and expense,  shall obtain any applicable
permits  and  shall  comply  with all  applicable  permits,  ordinances,  rules,
regulations,   requirements  and  laws  of  any  Governmental  authority  having
jurisdiction  over the Premises or the Permitted Use thereof or the placement or
use of any improvements  thereon,  including but not limited to zoning,  health,
safety,  building or  environmental  matters.  Lessee shall  supply  Lessor with
copies of all permits and letters or certificates of such authority's consent to
and/or approval of Lessee's use of the Premises.


                                        2
<PAGE>


     8.2 Lessee shall further  defend,  indemnify and hold Lessor  harmless from
all losses,  damages,  costs of defense (including attorneys' fees) and costs of
compliance relating to any ordinance, rule, regulation,  law, citation, order or
notice, any violation thereof, any penalty, levy, fine or assessments therefrom,
including  any penalty,  levy,  fine,  assessment,  compliance  cost or remedial
charge  levied during the Term,  or after  termination  of this Lease for events
arising during this Lease.

9.   MAINTENANCE, REPAIRS AND COSTS.

     Lessee will not create or permit any nuisance in, on or about the Premises,
and Lessee shall repair and maintain, at its sole cost and expense, the Premises
and any  improvements  thereon,  in a neat and clean condition to the reasonable
satisfaction of Lessor.

10.  SERVICES, UTILITIES.

     Lessor will be under no obligation to furnish the Premises with water, gas,
sewage, electricity,  heat, or other services and supplies that may be necessary
or desirable in connection with Lessee's use and occupancy of the Premises.

11.  ADJACENT AREAS.

     Except as provided in Article 12 hereof,  Lessee shall not use any property
of Lessor other than the Premises herein leased without first obtaining Lessor's
prior written consent and complying with all  requirements of Lessor  applicable
thereto,  including  payment  of such  charges,  costs or fees as  Lessor  deems
appropriate, in its sole discretion.

12.  INGRESS AND EGRESS.

     Lessee  shall  have the right to use,  in common  with  Lessor  and  others
authorized by Lessor,  existing driveways or other property designated by Lessor
as the means of ingress to and egress from the  Premises.  Lessor shall be under
no obligation  with respect to the condition or maintenance of said  driveway(s)
or other  property,  and  Lessee's  use of same  shall be  subject to all of the
covenants, terms and conditions of this Lease.

13.  PIPE AND WIRE LINES.

     Lessor shall at all times have the right to maintain and/or construct,  and
to permit others to maintain and/or construct,  overhead and/or underground pipe
and/or wire lines now or hereafter installed upon or across the Premises, and to
use, repair, renew, replace and remove the same.

14.  CLAIM OF TITLE.

     Lessee  shall not at any time claim  ownership  of or any  right,  title or
interest  in or to the  Premises,  nor shall the  exercise of this Lease for any
length of time give rise to any right,  title or interest in or to the Premises,
other than the leasehold herein created.

15.  MECHANIC'S LIENS.

     Lessee shall promptly pay all debts incurred by, and shall promptly satisfy
all liens of, its contractors, subcontractors,  mechanics, laborers and material
men in respect to any construction,  alteration, maintenance or repair of, in or
to the Premises,  and any improvements thereon, and shall indemnify,  defend and
hold Lessor harmless from and against all losses, damages,  penalties, fines and
legal  costs  and  charges,  including  attorneys'  fees  incurred,  in any suit
involving any lien, the  enforcement  or  satisfaction  thereof,  or encumbrance
caused by the same,  with  respect to the  Premises  or any part  thereof or any
improvements  thereon.  Further,  Lessee  shall have no  authority to create any
liens for labor or material on or against  Lessor's or Lessee's  interest in the
Premises,  and  shall  so  specify  in all  contracts  let  by  Lessee  for  any
construction,  erection, installation,  alteration, maintenance or repair of the
Premises or any improvement thereon.


                                        3
<PAGE>


16.  TERM, TERMINATION, BREACH, REMOVAL:

     16.1 The  initial  term of this  Lease  shall be one (1)  year,  and  shall
thereafter run year-to-year (the "Term"). This Lease may be terminated by either
party  for any  reason  and at any time upon not less  than  three  (3)  months'
written  notice.  Notwithstanding  the  foregoing,  in the  event of a breach by
Lessee  of any  covenant,  term  or  condition  of  this  Lease  or of the  Base
Agreement, Lessor may, at its sole option, terminate this Lease immediately.

     16.2 Upon the expiration or earlier termination of this Lease, Lessee shall
immediately  vacate the Premises.  Within ninety (90) days of the  expiration or
earlier  termination of this Lease,  Lessee,  at its own risk, cost and expense,
shall  remove all  improvements  erected or used by Lessee on the  Premises  and
shall restore the Premises to the functional and operational  condition existing
prior to the  execution  of this  Lease.  If within such ninety (90) day period,
Lessee fails to remove such  improvements and restore the Premises  accordingly,
Lessee shall be deemed to have  abandoned its  improvements  in place,  in which
event such  improvements  shall become the  property of Lessor,  for purposes of
resale,  use or  operation  by Lessor in any manner and for any  purpose  Lessor
deems appropriate,  in its sole discretion; or Lessor may cause such removal and
restoration to be performed and all costs incurred by Lessor in such removal and
restoration, together with interest thereon at the highest non-usurious interest
rate  allowed by law,  shall be due and payable by Lessee to Lessor upon written
demand.

     16.3 The expiration or earlier  termination of this Lease shall not release
either party from any liability or obligation  incurred prior to such expiration
or termination nor terminate any right or obligation reasonably intended to have
continuing validity hereunder.

17.  RELOCATION.

     Lessor shall have the sole and absolute  right to require the relocation of
the  Premises,  including any  improvements  thereon.  The terms and  conditions
applicable thereto shall be as stated in the Base Agreement.

18.  LIABILITY, INDEMNITY.

     18.1  In  addition  to the  indemnification  obligations  stated  elsewhere
herein,  Lessee hereby releases  Lessor,  assumes  responsibility  for and shall
defend, indemnify and hold Lessor harmless from and against all losses, damages,
claims,  fines,  costs (including  attorneys' fees) and expenses arising from or
relating to:

          (a)  any breach of this Lease by Lessee,

          (b)  any  violation  by Lessee of any law,  rule,  regulation,  order,
               notice,  ordinance  or  any  other  requirement  of a  public  or
               governmental authority,  including Lessee's failure to obtain any
               necessary approval, consent or permit,

          (c)  any damage (including environmental damage) to the
               Premises, improvements or other property,

          (d)  any bodily injury,  including  death,  of any person,  including,
               without   limitation,   the   agents,   employees,   contractors,
               licensees,  permittees  and  invitees  of Lessor  or  Lessee  and
               trespassers,  which  occurs on the  Premises  or  relates  to any
               action or omission on the Premises, and

          (e)  any liability arising from or relating to the condition
               of the Premises, or Lessee's use or occupancy thereof or
               placement or use of any improvements thereon,

whether caused by the fault, failure or negligence of Lessee, Lessor or
otherwise.

     18.2 Lessee agrees it shall not have and hereby  completely  and absolutely
waives its right to any claim  against  Lessor for damages or any other legal or
equitable  relief  on  account  of any  deficiencies  in  Lessor's  title to the
Premises.  Lessee shall  indemnify and hold Lessor harmless from and against all
claims,  litigation  and damages for trespass,  slander of title,  overburden of
easement, or other claims arising out of or based upon Lessee's use or occupancy
of the Premises or any placement or use of any improvements thereon.


                                        4
<PAGE>


     18.3 Nothing contained herein shall amend, alter, modify, abridge or affect
the  provisions  of  the  Base  Agreement  relating  to  indemnification  or the
allocation of liability.

     18.4 The  provisions  of this Article 18 shall  survive the  expiration  or
earlier termination of this Lease.

19.  INSURANCE AND LIABILITY.

          Each and every policy of insurance  required  under the Base Agreement
shall,  prior to and during  Lessee's  use or  occupancy  of the Premises or any
placement or use of any improvements  thereon, be amended or modified to provide
such coverage for Lessee's obligations hereunder,  Lessee's use and occupancy of
the Premises and Lessee's placement or use of improvements thereon. Lessee shall
provide  Lessor's  Risk  Management   Department,   500  Water  Street  (J-907),
Jacksonville,  FL 32202 with certified  copies,  except that, in the case of the
Railroad  Protective  Liability ("RPL") Policy,  the original,  of the insurance
policies  amended or  modified in  accordance  herewith.  If, in  Lessor's  sole
opinion,  higher  limits of insurance  coverage are  necessary,  Lessor shall so
notify  Lessee  and Lessee  shall,  within  thirty  (30) days of receipt of such
notice,  provide to Lessor's Risk Management Department a certified copy (or the
original  for the RPL  Policy)  of the  endorsement  to the  appropriate  policy
increasing the liability  coverage to the required limit. The liability  assumed
by  Lessee  under  this  Lease,   including,   but  not  limited  to,   Lessee's
indemnification  obligations,  shall not be  limited to the  insurance  coverage
stipulated herein.

20.  CONDEMNATION.

     Should the Premises or any part thereof be condemned,  appropriated  and/or
acquired for public use, then Lessor,  at its sole option,  may  terminate  this
Lease.  No part of any  damages or award shall  belong to Lessee,  except to the
extent of any specific award from the governmental authority for improvements of
Lessee.  The Premises shall be valued as vacant land,  without  consideration of
this  Lease or  Lessee's  improvements  on the  Premises  as an  enhancement  or
detriment to said value.  Improvements of Lessee not so condemned,  appropriated
and/or acquired shall be removed in accordance herewith.

21.  SUCCESSORS, ASSIGNS; NO TRANSFER, SUBLEASE OR ASSIGNMENT.

     21.1 The terms,  covenants and provisions hereof shall inure to the benefit
of and be binding upon the  successors  and assigns of Lessor and the successors
and permitted assigns of Lessee.

     21.2 The  foregoing  notwithstanding,  Lessee shall not  transfer,  assign,
encumber  or sublet  this  Lease or any part of the  Premises  or any  rights or
privileges  herein granted,  without the prior written consent of Lessor,  which
may be withheld in Lessor's sole discretion.  The foregoing  covenant shall also
apply  whether  such  sale  or  transfer  is  made   voluntarily  by  Lessee  or
involuntarily  in any  proceeding  at law or in equity to which  Lessee may be a
party whereby any of the rights, duties and obligations of Lessee shall be sold,
transferred, conveyed, encumbered, abrogated or in any manner altered. Any sale,
conveyance,  transfer,  assignment,  sublease, abrogation or encumbrance of this
Lease,  all or any portion of the  Premises or any of the rights and  privileges
hereunder in violation of this Article 21 shall be null and void and Lessor,  at
its sole option, may terminate this Lease.

22.  BANKRUPTCY RIGHTS.

     It is expressly  understood  and agreed that in the event of any assignment
for the benefit of creditors,  or in the event a petition in bankruptcy shall be
filed by Lessee,  or if Lessee  shall be adjudged  bankrupt or  insolvent by any
court,  or if a trustee  in  bankruptcy  or a  receiver  of  Lessee or  Lessee's
property  shall be  appointed  in any suit or  proceeding  brought by or against
Lessee, and if at such time this Lease is in default by Lessee, then and in such
event Lessor, at its sole option,  may (i) immediately  terminate this Lease, or
(ii) may request an  election of  affirmance  or  rejection  of this Lease under
Section  365 of the  Bankruptcy  Act by  giving  Lessee  or any  such  assignee,
trustee,  or receiver written notice of such demand for election.  If Lessee, or
such  assignee,  trustee or  receiver,  fails to elect  affirmance  and fails to
furnish  adequate  assurances as to the payment of Lessee's  existing and future
indebtedness to Lessor and continued  performance under the Lease,  Lessee shall
be deemed to have  rejected  the same.  If Lessee or such  assignee,  trustee or
receiver shall


                                        5
<PAGE>


reject or be deemed to have  rejected  this  Lease,  this Lease  shall be deemed
immediately  terminated.  If Lessee or such assignee,  trustee or receiver shall
affirm this Lease, it shall  thereupon be bound by all terms hereof,  including,
without  limitation,  the  obligation  to  make  payment  of all  sums  then  or
thereafter due from Lessee hereunder.

23.  SEVERABILITY, GOVERNING LAW, WAIVER, NOTICES.

     23.1 Each and every  separate  division  (paragraph,  clause,  item,  term,
condition,  covenant or agreement)  herein  contained shall have independent and
severable status from each other separate division,  or combination thereof, for
the  determination  of  legality,  so that if any  separate  division  herein is
determined to be unconstitutional,  illegal,  violative of trade or commerce, in
contravention of public policy, void, voidable, invalid or unenforceable for any
reason,  that separate division shall be treated as a nullity,  but such holding
or  determination  shall have no effect upon the validity or  enforceability  of
each  and  every  other  separate  division  herein  contained,   or  any  other
combination thereof.

     23.2 This  Lease  shall be  governed  by the laws of the State in which the
Premises are located.  Nothing  contained  herein  shall amend,  alter,  modify,
abridge or affect the provisions of the Base Agreement  relating to the parties'
choice of governing law as to the rights and obligations contained therein.

     23.3 No  waiver  by Lessor of any  breach  of any  covenant,  condition  or
agreement herein contained shall operate as a permanent waiver of such covenant,
condition,  or agreement,  or of any subsequent  breach  thereof.  No payment by
Lessee or receipt by Lessor of a lesser amount than the  installments of rent or
other sums due hereunder shall be deemed to be an acceptance thereof or a waiver
of any of Lessor's  rights  hereunder or a discharge of any obligation of Lessee
hereunder.  Lessor shall have the right, in its sole  discretion,  to apply such
payment to any  indebtedness  owing from  Lessee to Lessor.  No  endorsement  or
statement on any payment or letter  accompanying such payment shall be deemed an
accord and satisfaction, and Lessor may accept such payment without prejudice to
Lessor's right to recover any outstanding  balance or to pursue any other remedy
provided in this Lease.  No  re-entry  by Lessor  after a breach or  termination
shall  be  considered  an  acceptance  of a  surrender  of the  Premises  unless
specifically agreed to in writing by Lessor.

     23.4  All  notices  and  communications  required  or  permitted  under  or
otherwise  concerning  this Lease shall be addressed to Lessor or to Lessee,  as
appropriate,  at their respective  addresses set forth herein,  or at such other
address as either party may  designate in writing to the other party.  Copies of
any notices or communications required or permitted under Section 18 or 19 shall
be provided to Lessor's Risk  Management  Department,  500 Water Street (J-907),
Jacksonville, FL 32202.

24.  OTHER PROVISIONS.

     None





                                        6
<PAGE>


     IN  WITNESS  WHEREOF,  the  parties  hereto  have  caused  this Lease to be
executed, in duplicate, as of the day and year first above written.

                                    "LESSOR"
                                    CSX TRANSPORTATION, INC.
                                    [as operator for New York Central Lines LLC,
                                    a Delaware limited liability company]

Witnesses:

____________________________        By:_________________________________
                                    Name:_______________________________
____________________________        Title:______________________________

                                    "LESSEE"
                                    PATHNET TELECOMMUNICATIONS, INC.
                                    Name:_______________________________
____________________________        Title:______________________________



                                        7
<PAGE>
                                    EXHIBIT D
                                   ---------

                                   [LOGO ART]

                 When working along the Rail Road Right of Way

Make  sure you have all the  other RR  Tenants  notified  before  digging.  Long
Distance Telecommunications Companies use RR ROW to route very small Fiber Optic
Cables  which  carry  huge  volumes  of  Telecommunications  traffic  including:
Banking, Stock Markets,  Point of Sale, 911, FAA and Government.  Not to mention
YOUR Family trying to call one another.

        LONG DISTANCE PHONE CO.

<TABLE>
<S>                      <C>
WORLDCOM                 1-800-248-0133
AT&T                     1-800-252-1133
MCI                      1-800-624-9675
SPRINT                   1-800-521-0579
QWEST                    1-800-283-1237
Interstate FiberNet      1-800-374-2350
</TABLE>

           ONE-CALL CENTERS
<TABLE>
<S>                      <C>
Alabama                  1-800-292-8525
Connecticut              1-800-922-4455
DC                       1-800-257-7777
Delaware                 1-800-282-8555
Florida                  1-800-432-4770
Georgia                  1-800-282-7411
Illinois (Chicago)       1-312-744-7000
Illinois                 1-800-892-0123
Indiana                  1-800-382-5544
Kentucky                 1-800-752-6007
Louisiana                1-800-272-3020
Massachusetts            1-888-344-7233
Maryland                 1-800-257-7777
Maryland                 1-800-282-8555
Maine                    1-888-344-7233
Michigan                 1-800-482-7171
Mississippi              1-800-227-6477
North Carolina           1-800-632-4949
New Hampshire            1-888-344-7233
New Jersey               1-800-272-1000
New York City
 (Long Island)           1-800-272-4480
New York                 1-800-962-7962
Ohio                     1-800-362-2764
Pennsylvania             1-800-242-1776
Rhode Island             1-888-344-7233
South Carolina           1-800-922-0983
Tennessee                1-800-351-1111
Virginia (South)         1-800-552-7001
Virginia (North)         1-800-257-7777
Vermont                  1-888-344-7233
West Virginia            1-800-245-4848
</TABLE>



                                       .48
<PAGE>
                                 CSXT EXHIBIT E

SPECIFICATIONS FOR UNDERGROUND COMMUNICATIONS AND POWER CABLE CROSSINGS AND
LONGITUDINAL OCCUPANCY UNDER TRACKS AND RIGHTS OF WAY

A.     PURPOSE OF SPECIFICATIONS

       The  purpose  of these  specifications  is to  govern  the  location  and
       installation of underground communication and power cables crossing under
       the track(s) and/or CSXT right of way in a manner that will not interfere
       with present and future CSXT construction operations.

B.     GENERAL LOCATION OF UNDERGROUND FACILITIES

       1.     The cable or duct system of proposed  underground  crossings shall
              be laid as  straight  and direct as  possible  between  the points
              where the underground line enters and leaves the property of CSXT.

       2.     Manholes,  pull and splice boxes, and terminals in the underground
              crossings  should  be  located  off  CSXT's  right  of  way  where
              possible,  or at the  outer  edge  of the  right  of way  when  on
              Railroad property.  If the structures must be located further from
              the right of way  line,  and  nearer  the  track(s),  they must be
              installed below ground, and marked with identification  flush with
              the ground.

C.     DESIGN CRITERIA FOR UNDERGROUND FACILITIES

       1.     The tops of conduits and/or ducts and cable system structures of
              underground cable crossings shall be located at a depth of not
              less than 60 inches below the bottom of the crossties. In
              addition, the installations shall be at least 36 inches below the
              bottom elevations of ditches or 42 inches below ground level for
              parallel installations with the lowest depth governing. Where
              rail-plow is authorized, conduit or cable shall be at a depth of
              not less than 42 inches below ground level.

              When  installations  are  proposed  by rail  plowing,  the minimum
              offset  from the  centerline  of the near track  shall not be less
              than 15 feet. When  installations are proposed by tractor plowing,
              they shall be located more than 15 feet from the centerline of the
              near track.  Tractor  plowing  will not be  permitted  on railroad
              embankments  without specific site approval.  The proposed conduit
              installations shall not be located less than 5 feet from CSXT code
              cables. Plowing through


<PAGE>


              public  or  private  road  crossings  will not be  permitted.  All
              drainage structures will be located and marked prior to plowing or
              trenching.

              Unless otherwise approved,  manholes, hand hole/splice boxes shall
              be located at least 25 feet from the  centerline of the near track
              where right of way is available.  Unless otherwise approved, bored
              conduits  shall clear signal  control  building  and  appurtenance
              foundations  by 5 feet  vertically.  The  conduits are to be clear
              such facilities  horizontally by 5 feet if trenched and 10 feet if
              bored.

       2.     Underground crossings of power supply cables with a maximum
              voltage of 750 volts may be installed by pushing or boring a
              galvanized steel pipe under the tracks at a depth specified above
              to serve as a conduit, provided such pipe extends at least 25 feet
              beyond the outside rail on each end of the crossing and the top of
              pipe casing is buried at least 60 inches below the bottom of the
              crossties and 36 inches below ditch bottoms at all other points on
              the property of CSXT. Longitudinal occupancy shall be approved by
              the Chief Engineer to ensure that such proposed occupancy does not
              impair the normal functioning of Train Control equipment.

              Measurements  to the ends of the conduits  shall be to the head of
              the outside rail and made at right angles to the track. Additional
              lengths will be required for  crossings in fill sections and those
              at  angles  of less  than  ninety  degrees  (90  degrees)  and for
              multi-track  crossings.  Generally,  on fills, two feet beyond the
              toes of the  slopes  or three  feet  beyond  the  ditch  should be
              sufficient,  (refer  to  Attachment  No. 1 and No.  2).  All ducts
              and/or   encasement   beneath   the  tracks  must  be  capable  of
              withstanding E-80 loading and conform to A.R.E.MA. Part 5, Section
              5.3.  Conduits and/or encasement larger than four (4) inches shall
              be governed by the specifications  which normally cover pipelines.
              Jacking or boring installation is preferred, and no water is to be
              used in the installation of the encasement.

       3.     Underground crossings of communications cables of low voltage
              shall conform to number "2" above, except that encasement may, at
              the discretion of the Chief Engineer or his authorized
              representative, be restricted to 15 feet beyond the outside rail
              of spur or sidetracks measured at right angles to the track. As in
              number "2" above, additional lengths will be required for
              crossings in fill sections, etc. These criteria shall also apply
              to paved street sections.

       4.     Underground crossings of power supply cables operating above 750
              volts will be installed at depths specified above. In addition,
              between the points where the underground crossings enter or leave
              CSXT


                                        2
<PAGE>


              property,  the cable is to be enclosed in galvanized steel pipe or
              in an approved concrete encased duct for mechanical  protection of
              the cable. No cable of this potential, which is unprotected,  will
              be  permitted.  Longitudinal  occupancy  shall be  approved by the
              Chief  Engineer to ensure that such  proposed  occupancy  does not
              impair the normal function of Train Control equipment.  If risk to
              inductive  interference is perceived,  a further  examination by a
              third party may be required.

       5.     Owners of the conduits and cables shall designate the locations of
              such installations to aid in the prevention of damage to the cable
              as a result of use of Railroad's property.  Signs or markers shall
              be placed and  maintained  preferably at or near the CSXT right of
              way  line.  The  signs/markers   shall  describe  the  underground
              facility  and include a  telephone  number of the  facility  owner
              clearly visible on each side of the track.

       6.     In addition to the requirements of these specifications, the
              underground crossing is to conform to the requirements of the
              National Electrical Safety Code, as published by the National
              Standards Institute, Inc., the latest revised edition of same
              being controlling. The crossing is also to conform to the
              requirements of any local or state laws or regulations of any
              local code enforcing authority that may be in effect at the time
              of the installation.

       7.     All applications for underground facilities described in this
              document shall be submitted to the appropriate Division Engineer
              or Manager, or his or her designated representative(s) having
              jurisdiction and must be accompanied by complete location and
              construction plans referenced to CSXT's milepost. No work is to be
              performed on CSXT property prior to granting of authority from the
              Division Engineer or Manager. All work on the property will be
              performed under the supervision of the Division Engineer or
              Manager. The applicants shall bear any expense incurred by CSXT or
              its forces, will execute the appropriate agreement and pay all
              fees and rentals as required by established standards or as
              negotiated.

       8.     Conduit  shall be so  installed  as to prevent the  formation of a
              waterway under the railroad,  with an even bearing  throughout its
              length,  and  shall  slope  to one end  (except  for  longitudinal
              occupancy).

       9.     Bored or  jacked  installation  shall  have a bored  hole with the
              diameter  essentially  the  same as the  outside  diameter  of the
              conduit plus the  thickness of any  protective  coating.  If voids
              should develop or if the hole diameter is greater than the outside
              diameter of the conduit  (including  coating) by more than one (1)
              inch, remedial measures, as


                                        3
<PAGE>


              approved by the railroad's Chief Engineer,  shall be taken. Boring
              operations  shall  not  be  stopped  if  such  stoppage  would  be
              detrimental to the railroad.

       10.    Conduits and cables shall be  installed by plowing  methods  where
              practical. Directional boring, and trench and back fill techniques
              shall be used in those locations where plowing is impractical.  In
              all cases,  the  condition  of the right of way will be  restored,
              including  vegetation and erosion controls to CSXT's satisfaction,
              and in  accordance  with current CSXT  specifications  for grading
              work.

       11.    All bridge attachment designs must be approved by CSXT. All
              designs are to provide for attachment to the outside of the bridge
              structures. Insertions or burial of casing and/or conduit where
              the ballast is carried across bridge decks will not be approved
              except for aesthetic or historic reasons. Steel pipe casing with
              adequate provision for contraction and expansion shall be used to
              support the conduit. Core drilling for installation of casing
              through bridge back walls, head walls, and wing walls shall be
              located not less than one core diameter from the top or outside
              face of the wall. Steel sleeves secured by approved grout material
              shall be installed in bores through concrete walls prior to the
              installation of casing. All FRA and OHSA safety rules for bridge
              worker safety shall apply when work is performed on bridges. Care
              must be taken to ensure metallic conduit shall not impair or
              circumvent Train Control circuitry.

              Excavation  by blasting  methods  shall be employed only as a last
              resort, must be approved by CSXT in writing in each instance,  and
              must comply with Sections  1..3..5..9..  of the Manual for Railway
              Engineering, refer to Attachment No 3.

       12.    Point of Presence, Regeneration and Junction Sites are to be
              located not less than 25 feet from the centerline of the near
              track. Service and access roads are to be located not less than 25
              feet from the centerline of the near track. These site
              installations shall not interfere with existing drainage
              structures and systems, or service roads. Sites involving
              buildings or other types of sight obstructions shall be located in
              accordance with CSXT crossing sight distance criteria, refer to
              Attachment No. 4 and No. 5.

       13.    The  owners of the  proposed  installations  are  responsible  for
              coordination  with all existing  utilities located on the right of
              way during design and  construction,  and  maintaining  the proper
              clearances.   The  owners  of  the  proposed   installations   are
              responsible  for  obtaining  all  construction  and  environmental
              permits, and compliance with their


                                        4
<PAGE>


              requirements.   The  owners  of  the  proposed  installations  are
              responsible for  confirmation of title to right of way through CSX
              -- Real Property, Inc.

       14.    Design Plans - All plans shall be submitted to CSXT for review and
              approval. No work is to be initiated without approved plans on
              site. Plans shall be drawn to scale showing the relation of the
              proposed cable system to railroad tracks, railroad signals and
              control facilities, angles of crossings, locations of bores,
              manholes, hand holes, railroad survey stations, railroad mile
              posts with prefixes, right of way lines and general layout of
              tracks and facilities, etc. Also, drawings must show number of
              conduits, size and location of cable in the conduit, fiber count
              in each cable, and details of bridge attachments. A general
              location map together with a legend indicating line and symbol
              designations with on/off milepost (nearest 0.1 mile) is to be
              included. CSXT reserves the right to require plan modifications
              during construction to protect railroad facilities and operations.

D.     CONSTRUCTION OPERATIONS

       Construction  operations  shall be  planned  and  organized  to  minimize
       conflicts with railroad operations. All operations are to be conducted in
       accordance with CSXT Safe Way policies and procedures, and are subject to
       CSXT approval.

       1.     Pre-construction conferences shall be held prior to beginning work
              on  the  right  of  way.   Additional   progress  meetings  and/or
              teleconferences  may be  required  during  the course of the work.
              Coordination  shall be  provided  as  outlined  in CSXT MWI  1905.
              Complete work schedules will be presented at the  pre-construction
              conference. The schedules are to be updated monthly at a minimum.

       2.     All construction operations shall be conducted in compliance with
              CSXT MWI 1905 and the CSXT Fiber Optic Program Safety Requirements
              approved 09-09-98, refer to Attachment No. 6.

              All  personnel on the projects  shall have  received CSXT Safe Way
              (including  FRA OTS) training  prior to entering the right of way.
              Proof  of  training  may  be  required  at  anytime.  Construction
              operations  shall be  conducted  in  accordance  with FRA and OSHA
              regulations,  and coordinated  with and subject to the approval of
              the CSXT Chief  Engineer  for Design  and  Construction,  the CSXT
              Service Lane or Business Unit Division Engineer,  the CSXT Flagmen
              and Signalmen, and the consultant inspection personnel assigned to
              the projects by CSXT.  Permissions  shall be obtained from CSXT to
              enter the right of way before beginning operations.


                                        5
<PAGE>


              All personnel shall receive safety  briefings by a CSXT Flagman or
              designated CSXT  representative  each day before beginning work on
              the  right  of way.  Additional  briefings  may be  required  when
              conditions  and/or work sites are  changed.  Requests  for flagmen
              deployments  and  train  orders  shall  be  submitted  to the lead
              flagman or the designated CSXT  representative by 3:00 PM each day
              for the following workday.

       3.     The owners of the facilities shall have  construction  managers in
              responsible  charge  on  site  at  all  times  and  shall  provide
              production  quantities  on a daily  basis to the  CSXT  designated
              representative or the consultant  inspection personnel assigned to
              the project.

       4.     Accurate  notes and records shall be maintained  during the course
              of the work to enable the preparation of complete "as-built plans"
              upon  completion of the  project(s).  The  "as-built  plans" shall
              accurately  depict and  describe  the  location of all  facilities
              installed on the right of way.  As-built  plans shall be submitted
              for approval as specified in the contract with CSXT.

       5.     Unless  otherwise  approved  or  directed,  all  plowing  shall be
              performed  with plow  cutting  edge  perpendicular  to the  ground
              surface.  Plow  lines  are  to be  backfilled  and  compacted,  as
              required, as conduit installation  progresses.  All plow areas are
              to be backfilled  before work is suspended for the day.  Follow up
              restoration work will be required  whenever  settlement or erosion
              is observed.

              In the event of equipment breakdowns,  severe weather, or railroad
              emergencies  that preclude  completing and closing  excavations or
              disallow complete removal of equipment or materials, the areas are
              to  be   surrounded   with  orange   construction   fence  to  the
              satisfaction  of the CSXT  representative.  Flashing  construction
              barricades  may be required if the sites are in or near walk ways,
              switches,  signal control cabinets, or services roads used by CSXT
              personnel during night time hours.

              Excavations  shall comply with OSHA  requirements  and be promptly
              backfilled  and  compacted  in  accordance  with the  drawings and
              specifications  approved  by the  CSXT  Chief  Engineer,  refer to
              Attachment No. 7.

       6.     Fouling of the track, ties and ballast will not be permitted.
              Approved ballast stone shall be available on the project at all
              times. Ballast contaminated or disturbed shall be replaced and/or
              reshaped immediately.


                                        6
<PAGE>


              All obstructions  located within 15 feet of the center of the near
              track or on or adjacent to the walk  areas,  switches,  and signal
              control  devices and cabinets are to be removed by the end of each
              workday.

              Conduit at the end of plow lines,  directional bores, and trenches
              shall be cut off and buried as the work  progresses.  In the event
              that it becomes  necessary  to leave  exposed  ends or sections of
              conduit due to  emergencies or inclement  weather,  they are to be
              surrounded  with  orange   construction   fences  until  they  are
              connected  or  buried.  Messages  are  to  be  sent  to  the  CSXT
              dispatcher advising of potential crew or operational hazards.

              Casings  and  directional  bore  holes  that have  failed  and are
              abandoned  shall be sealed to prevent them from becoming  conduits
              for drainage.  Excavations  associated with abandoned  casings and
              bores  are  to  be  backfilled  and  compacted  as  shown  in  the
              specifications.

              The telecom  owners are  responsible  for  clearing  and  grubbing
              vegetation  that conflicts with the  construction  and disposal of
              the debris off the right of way.

       7.     Cables and/or wires temporarily installed to monitor or guide
              directional boring operations shall be subject to the following:

              a) CSXT  permission  is  required  if they are to be  attached  to
              railroad  structures and the flagmen are to be kept advised of all
              installations.

              b)  Clearances  over  waterways  must be  maintained to allow free
              unobstructed passage of boat traffic.

              c) Wires and supports located on the ground must be clearly marked
              and located such that they do not conflict with railroad personnel
              and  operations.  Control wires are not to be installed in advance
              of beginning operations and work deferred.

              d) When directional bores are monitored by electronic devices that
              do not use wire, and the work crosses streets or highways; traffic
              control devices,  approved by the State DOT, are to be placed when
              personnel  are on the highway right of way and/or  interfere  with
              traffic.

              e) All wires and supports are to be removed from the site promptly
              after work is completed.


                                        7
<PAGE>


       8.     Areas  disturbed by construction  operations  shall be reshaped to
              drain, seeded,  mulched or surfaced with crushed stone as required
              to prevent  erosion and ensure CSXT  personnel  and  equipment can
              safely  use all areas at all  times.  Restoration  of right of way
              disturbed  by  construction   operations  shall  be  scheduled  to
              coincide  with the  installation  of conduit and hand  hole/splice
              boxes and other appurtenances.

              The owners of the  facilities  shall  comply  with all  applicable
              CSXT, Federal, State and local environmental laws and regulations.
              The owners  shall also  prevent  construction  material and debris
              from  entering  waterways,  wetlands,  and detention and retention
              ponds. Any material that inadvertently escapes during construction
              operations  shall be  recovered  and  properly  disposed  of at an
              acceptable site.  Erosion control  materials such as silt fencing,
              bale  checks and mulch  shall be  available  and  installed  where
              necessary to protect potentially environmentally sensitive areas.

              Existing riprap or other erosion control  structures  disturbed or
              damaged  during the course of the work shall be promptly  repaired
              to the satisfaction of CSXT.  Completed work shall be re-evaluated
              following storms or other  construction  activities to ensure that
              the right of way is maintained in a satisfactory manner during the
              course of the work.

       9.     The  right of way shall be  restored  to a  condition  equal to or
              better than the condition  prior to beginning  the project  before
              final  acceptance will be approved.  Conduit and cable reels,  and
              other  debris are to be removed  from the right of way as the work
              progresses.   Failure  to  remove  such   materials   and  perform
              restoration  promptly  may  result in a  suspension  of work order
              until satisfactory progress has been demonstrated.

       10.    Final  inspections  of the right of way condition and  restoration
              will  be  scheduled  at CSXT  convenience  prior  to  construction
              personnel and equipment leaving the project.  Punch lists shall be
              responded to prior to issuance of an acceptance  memorandum signed
              by the Division Engineer or his/her designated representative.


                                        8
<PAGE>


E.     COMPLIANCE WITH SPECIFICATIONS

       1.     All work performed and materials furnished shall be in reasonably
              close conformity with the provisions contained in the plans and
              specifications approved by CSXT for the project and the provisions
              contained in this document. In the event that materials or the
              finished work are not in reasonably close conformity with the
              plans and specifications, CSXT will determine if the work or
              materials shall be removed and replaced or otherwise corrected to
              the satisfaction of CSXT.

       2.     No  revisions  to existing  installations  will be required  under
              these  specifications.  When  necessary  to  install,  relocate or
              replace existing facilities, these specifications will govern.

       3.     These   specifications  will  become  effective  on  the  date  of
              signature  below and will  remain in effect  until  revised by the
              Office of Chief Engineer CSX Transportation.


                                      Approved: [SIG]
                                               --------------------------------
                                                      Chief Engineer

                                      Date: Mar. 16, 1999
                                           ------------------------------------

                                      Approved: [SIG]
                                               --------------------------------
                                                Chief Engineer Train Control

                                      Date: 3-18-19
                                           ------------------------------------




       Prepared by:  B.H. Ortgies, P.E., V.P.
                     Wilbur Smith Associates
                     Tallahassee, FL
                     Revised Dec. 28, 1998


                                        9
<PAGE>


                                                                ATTACHMENT NO. 1




            [LENGTH OF CASING FOR VARIOUS CROSSING ANGLES DIAGRAM]




<PAGE>


                                                                ATTACHMENT NO. 2





                                [FILL DIAGRAM]




<PAGE>


                                                                ATTACHMENT NO. 3


               MANUAL FOR RAILROAD ENGINEERING, SECTION 1..3..5..9

1..3..5..9 Controlled Blasting of Rock

The  contractor  shall make all  necessary  arrangements  satisfactorily  to the
engineer for controlled  blasting in the vicinity of the track and shall provide
all safeguards required by the railway.

Within the entire area of the contract, complete and continuous precaution shall
be taken by the contractor to prevent any damages to persons,  vehicles, trains,
power  or  communication   lines,   structures,   private   dwellings  or  other
installations by reason of concussion, vibration or flying material.

The contractor shall be familiar with and comply with all regulations  governing
the transportation,  storage,  handling and use of explosives at the location of
the work. He shall obtain such permits as are required.

The  contractor  shall take all  necessary  precautions  against  the effects of
induced  currents  caused by radio  transmitters  and  receivers,  power  lines,
transformers,  cables, radar beams or any other energy or wave force which might
result in premature firing of the blasting circuits.

All blasting shall be done with extreme care by experienced licensed powder men,
in accordance with procedures approved by the engineer in writing.

The  contractor  shall  submit,  in advance of drilling,  a drilling and loading
pattern for blasting to the  engineer.  All drill dust shall be blown out of the
holes and holes shall be protected with suitable plugs or covers.

Approved  blasting  signals  shall be used at all times.  All blasting  shall be
carried out under  strict  traffic  regulations.  Each blast shall be subject to
clearance by the  contractor  from the  engineer to avoid any  blasting  while a
train is nearby.

When necessary to protect  property or facilities,  all blasts shall be suitably
covered with blasting mats or other approved protective  material,  weighted and
secured in such a manner as to prevent  projection of debris.  The contractor is
fully  responsible  for the method used in blasting  rock and  carrying  out the
approved  procedures and for the prompt  removal of all debris  deposited on the
track.  Approval of the engineer  shall not relieve the contractor in any degree
whatsoever of full responsibility for damages caused by blasting operations.


<PAGE>

                                                                ----------------
                                                                ATTACHMENT NO. 4
                                                                ----------------


               [ROAD CROSSING SIGHT CLEARANCE DISTANCES DIAGRAM]


<PAGE>

                                                                ----------------
                                                                ATTACHMENT NO. 5
                                                                ----------------



               [ROAD CROSSING SIGHT CLEARANCE DISTANCES DIAGRAM]



<PAGE>


                                                                ATTACHMENT NO. 6


                               CSX TRANSPORTATION
                               FIBER OPTIC PROGRAM
                               SAFETY REQUIREMENTS

GENERAL

- - - -      All fiber optic workers must receive CSXT SAFETY AWARENESS training and
       have a verification card and/or hard hat sticker. CSXT Safety Rules and
       Contractor Policies will apply to fiber optic workers, where applicable
       to the specific work performed.

- - - -      All personnel must wear proper Personal Protection Equipment, which
       includes a minimum of a hard a hat, safety glasses, steel toed shoes,
       hearing protection, and orange vests with reflective stripes on or around
       road crossings. When working beyond 25 feet from the nearest rail of a
       main track, hard hats, safety glasses, and laced work boots will be
       required.

- - -      - All "FRA Bridge Worker  Safety" rules will apply to fiber optic workers
       performing bridge attachments, including proper fall protecting rules.

- - - -      All test holes or pits less than 15 feet from the centerline of main
       tracks, will be filled or covered prior to passing of trains. No open
       pits or holes will be left over night. All pits and trenches will be
       shored according to OSHA requirements.

- - - -      No dirt or debris will be allowed to foul the ballast section of the
       tracks.

- - -      - All  excavation  or plow  trenches  will be back  filled and  compacted
       immediately after the work is done.

- - -      - All public utilities, CSXT Engineering,  and the Railroad Train Control
       Office, will be notified prior to any construction.

- - - -     Job Briefings will be conducted each morning and throughout the day when
       conditions or job scope changes.

WORKING ON OR AROUND TRACKS

- - - -      All work in the FRA Red Zone (within 4 feet from outside rail on each
       side of the track) will be done only with a CSXT, FRA qualified flagman
       or watchman as specified by the local Engineering representative. All
       work beyond 4 feet from the outside rails and within 25 feet, must be
       done under the supervision of a CSXT qualified inspector or flagman.

- - - -     Certain types of work done beyond 25 feet from the outside of the rails,
       and with equipment that will not reach beyond this point, may be done
       without flagging protection or a watchman, IF APPROVED BY THE LOCAL
       ENGINEERING REPRESENTATIVE, AND PROTECTED BY A CONSTRUCTION FENCE, IF
       WORK IS STATIONARY (WILL NOT BE USED FOR CAT PLOWING).

- - - -      All work must be stopped while trains are passing within the work zone.

- - -      - All workers  will remain off the tracks.  If  necessary  to perform the
       work on track, protection will be provided as stated above.

ALL  VIOLATION  OF ANY CSXT  SAFETY  RULES OR  POLICY,  MAY RESULT IN REMOVAL OF
CONTRACTOR OR PERSONNEL FROM THE RIGHT OF WAY.

CSXT/LLG Rev. 09-02-98 Approved by: Manager Safety 09-09-98


<PAGE>

                                                                ----------------
                                                                ATTACHMENT NO. 7
                                                                ----------------


                     [COMPACTION SPECIFICATIONS DIAGRAM]
<PAGE>
                                                                       EXHIBIT F



                                       -1-

                        Association of American Railroads
                              Communication Manual

<TABLE>
<CAPTION>
1989                                                                                        Part 1-B-1
- - - -------------------------------------------------------------------------------------------------------
                 Recommended Practices for Communication Lines
                        Crossing the Tracks of Railroads
                     Revised 1988 (76 Pages) (DOC. 1-B-1A)

                                Table of Contents
                               -----------------
                                                                                            Paragraphs
                                                                                           ------------
<S>                                                                                   <C>
Section A -- Purpose................................................................         A-1 to A-2
Section B -- Definitions............................................................        B-1 to B-10
   Communication Lines..............................................................         B-1 to B-4
   Supply Lines.....................................................................         B-5 to B-7
   Voltage of a Circuit.............................................................                B-8
   Minor Tracks.....................................................................                B-9
   Major Tracks.....................................................................               B-10
Section C -- General................................................................         C-1 to C-8
   Permits and Notices..............................................................        C-1 and C-2
   Marking Poles....................................................................                C-3
   Fire Hazard......................................................................                C-4
   Protection for Moving Vehicles...................................................                C-5
   Inspection.......................................................................         C-6 to C-8

                          Part I -- Overhead Crossings
                            ----------------------------
Section D -- General................................................................         D-1 to D-8
   Relative Levels of Supply & Communication Wires..................................         D-1 to D-3
   Protection of Metals Against Corrosion...........................................                D-4
   Vertical Pull....................................................................                D-5
   Length of Crossing Span..........................................................         D-6 to D-8
Section E -- Clearances.............................................................         E-1 to E-7
   General..........................................................................                E-1
   Side Clearances from Rails.......................................................                E-2
   Vertical Clearance Above Rails for Fixed Supports................................        E-3 and E-4
   Vertical Clearances Between Wires Not on the Same
      Supporting Structures.........................................................                E-5
   Increased Clearances.............................................................                E-6
   Clearance of Conductor of a Communication Line
      From the Supports of Another Line.............................................                E-7
Section F -- Loading Assumptions....................................................         F-1 to F-3
Section G -- Poles..................................................................        G-1 to G-10
   Material.........................................................................                G-1
   Sizes............................................................................                G-2
   Gains............................................................................                G-3
   Setting..........................................................................         G-4 to G-6
   Pole Mounts......................................................................                G-7
   Spliced Poles....................................................................                G-8
   Stub Reinforced Poles............................................................       G-9 and G-10
Section H -- Crossarms and Brackets.................................................         H-1 to H-5
Section J -- Crossarm Braces........................................................        J-1 and J-2
Section K -- Pins...................................................................                K-1
Section L -- Insulators.............................................................        L-1 and L-2
Section M -- Tie Wires..............................................................                M-1
Section N -- Conductors.............................................................         N-1 to N-5
Section P -- Sags...................................................................                P-1
</TABLE>

<PAGE>


                                       -2-

                        Association of American Railroads
                              Communication Manual

<TABLE>
<CAPTION>
Part 1-B-1                                                                                         1989
- - - -------------------------------------------------------------------------------------------------------
                                                                                            Paragraphs
                                                                                           ------------
<S>                                                                                   <C>
Section Q -- Guys...................................................................        Q-2 to Q-22
   Material.........................................................................                Q-1
   Side Guys........................................................................        Q-2 and Q-3
   Head Guys........................................................................        Q-4 and Q-5
   Guying at Corners and Terminals..................................................         Q-6 to Q-8
   Omission of Guys................................................................         Q-9 to Q-11
   Guying in Special Cases..........................................................               Q-12
   Guy Leads........................................................................               Q-13
   Methods of Anchoring Guys........................................................               Q-14
   Guy Rods.........................................................................               Q-15
   Anchors..........................................................................               Q-16
   Method of Securing Guy Strand....................................................               Q-17
   Guards for Guys..................................................................               Q-18
   Pole Braces......................................................................               Q-19
Section R -- Suspension Strand......................................................         R-1 to R-8
   Material.........................................................................                R-1
   Sizes............................................................................        R-2 and R-3
   Attachment to Poles..............................................................         R-4 to R-7
   Sags.............................................................................                R-8
Section S -- Cable Attachments to Suspension Strands................................                S-1

                        Part II -- Underbridge Crossings
                        --------------------------------
Section T -- General................................................................         T-1 to T-4
   Avoidance of Attachments.........................................................                T-1
   Attachments......................................................................                T-2
   Clearance from Abutments.........................................................                T-3
   Clearance from Bridge Structure..................................................                T-4

                        Part III -- Underground Crossings
                       ---------------------------------
Section U -- General................................................................        U-1 to U-14
   Arrangement for Work.............................................................                U-1
   Location.........................................................................                U-2
   Side Clearance from Rail.........................................................                U-3
   Clearance Below Base of Rail.....................................................        U-4 and U-5
   Arrangement of Conduit System....................................................                U-6
   Protection of Ducts..............................................................        U-7 and U-8
   Excavation.......................................................................                U-9
   Shoring..........................................................................               U-10
   Grading and Drainage.............................................................               U-11
   Backfilling......................................................................               U-12
   Removing Surplus Material........................................................               U-13
   Concrete.........................................................................               U-14
</TABLE>

<PAGE>

                                       -3-

                        Association of American Railroads
                              Communication Manual
1989                                                                  Part 1-B-1
- - - ------------------------------------------------------------------------------
                                  A -- Purpose
                                   ------------
A-1     These  recommended  practices are for  construction  and  maintenance of
        communication   lines  crossing  the  tracks  and  associated   parallel
        communication  lines of steam and electrified  railroads,  except street
        railways.

A-2     Where any  requirements of this  specification  do not meet municipal or
        state requirements, such municipal or state requirements shall govern.

                                B -- Definitions
                                 ----------------

B-1     Communication Lines: Communication lines as used in this manual part
        mean telegraph, telephone and other communication wires and cables and
        their supporting or containing structures which are located outside of
        buildings and are used for public or private communication service and
        which operate at not exceeding 400 volts to ground or 750 volts
        between any two points of the circuit, and the transmitted power of
        which does not exceed 150 watts. For such communication wires, when
        operating at less than 150 volts between wires or to ground, no limit
        is placed on the capacity of the system.

B-2     Interlocking,  automatic  signal and other similar wires (not  including
        electric  light and supply  wires),  which  operate at not exceeding the
        voltage and power requirements of communication wires, should be classed
        as communication wires.

B-3     Communication circuits used exclusively in the operation of supply lines
        should,  in general,  be  considered  as supply  circuits of the highest
        voltage  to  which  they are  exposed,  and  should  be  constructed  in
        accordance with Manual Part 7-1 (Recommended  Practices for Crossings of
        Electrical  Supply Lines and  Facilities of  Railroads),  but in no case
        need the  communication  conductors  meet the  requirements  for  supply
        conductors in excess of 8,700 volts between conductors.

B-4     Where,  however,  such  communication  circuits  are  below  the  supply
        conductors  in the  operation  of which  they are  used,  at all  points
        throughout  their length or throughout the section in which the railroad
        crossing occurs,  provided such section of the communication circuits is
        isolated  from the  remainder  of the  system by  transformers  or other
        means,
<PAGE>
                                       -4-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                 1989
- - - ------------------------------------------------------------------------------

     they may be considered as ordinary communication circuits and so
     constructed, if either of the following conditions obtain:
     (a)    Such communication circuits occupy a position below all other
            conductors or equipment or other lines at crossings,  conflicts,  or
            on commonly used poles  throughout the section to which reference is
            made.

     (b)    Such  communication  circuits are  protected  by fuseless  lightning
            arresters,  drainage coils, or other suitable devices to prevent the
            communication  circuit voltage form normally  exceeding 400 volts to
            ground.

B-5  Supply  Lines:  Electrical  supply  lines mean those  conductors  and their
     necessary  supporting or containing  structures  which are located entirely
     outside of buildings and are used for  transmitting  a supply of electrical
     energy.

B-6  Except as specified in Paragraphs  B-4 and B-7,  communication  and railway
     signaling  wires  exceeding the voltage or power  limitations  specified in
     Paragraph  B-1, are supply lines within the meaning of this manual part and
     should be so constructed.

B-7  Circuits  used for  supplying  power solely to apparatus  forming part of a
     communication system may be run either in open wire or cable as follows:
     (a)    Where run in open wire, such circuits should have the strength
            of construction, clearances, insulation, etc., prescribed for
            communication or supply circuits of the voltage concerned.

     (b)    Where run in effectively  grounded  continuous metal sheath cable or
            in cable which is attached to effectively grounded suspension strand
            by means of metal rings or spirally wound lashing wire, the strength
            of construction,  clearances,  locations,  etc.,  prescribed in this
            manual part for communication cables should apply.

B-8  Voltage of a  Circuit:  Voltage of a circuit  means the  highest  effective
     voltage between any two conductors of the circuit concerned, except that in
     a  grounded  multi-wire  circuit  of 750  volts  or  less  between  any two
     conductors,  it means the highest effective voltage between any wire of the
     circuit and that point or conductor of the circuit that is grounded.




<PAGE>
                                       -5-
                        Association of American Railroads
                              Communication Manual
1989                                                                 Part 1-B-1
- - -------------------------------------------------------------------------------



B-9  Minor Tracks: Minor tracks mean railroad tracks included in the
     following:
     (a) Spur tracks less than 2,000 ft. long and not exceeding two tracks
         in the same crossing span.

     (b) Narrow-gauge  or other tracks on which  standard  rolling stock cannot,
         for physical reasons, be operated.

     (c) Tracks used only temporarily for construction or similar purposes for a
         period not exceeding one year.

     (d) Tracks not operated as a public  utility,  such as industrial  railways
         used in logging, mining, etc.

     (e) By  agreement  between the parties at  interest,  other  similar  minor
         tracks than those listed under (a), (b), (c) and (d) above.

B-10 Major Tracks: Major tracks mean any tracks not included under the
     definition of minor tracks.


                                C-General

C-1  Permits and Notices: A party planning to erect wires across the tracks of a
     railroad  shall  give  to the  Superintendent  of  Communication  or  other
     designated  officer  of the  railroad,  written  notice at least 30 days in
     advance of starting  construction.  Such notice shall  include  information
     regarding  the location and general plan of the  crossing,  clearances  and
     other data  indicated on Typical  Communication  Line  Crossing Data Sheet,
     Appendix L, and on Figures  1B1-1,  1B1-3,  1B1-4 and 1B1-5,  and any other
     pertinent  information  in  sufficient  detail so that it can be determined
     whether   or  not  the   proposed   construction   will   conform  to  this
     specification.

C-2  In cases where 30 days' notice is impracticable  because of service demands
     or emergency,  the parties  concerned should cooperate to avoid unnecessary
     delay in the construction of the crossing.

C-3  Marking Poles: Crossing poles should be plainly marked by means of stencils
     or metal characters showing the name,  initials or trade mark of the owning
     company.  Where  lines are located on  railroad  right-of-way  for at least
     three poles adjacent to the crossing and it is the standard practice of the
     owning  company to so mark at least every fifth pole in the line, the above
     requirement should be considered as having been met.




<PAGE>



                                       -6-
                        Association of American Railroads
                              Communication Manual

Part 1-B-1                                                                 1989
- - - ------------------------------------------------------------------------------

C-4  Fire Hazard: Crossing poles or other supporting structures shall be located
     as far distant as  practicable  from  inflammable  structures and the space
     around the poles or other supporting  structures kept free from inflammable
     material.

C-5  Protection from Moving Vehicles: Supporting structures adjacent to traveled
     highways shall be located with a view to reducing,  as far as  practicable,
     the danger of being struck by moving vehicles. Structures which are exposed
     to abrasion by moving  vehicles or to other damage which would affect their
     strength materially, shall be protected by guards.

C-6  Inspection:  The  construction  shall be subject to the  inspection  of the
     railroad  company  and shall  comply with the  requirements  of this manual
     part.  Defective  material  shall be rejected and replaced with  acceptable
     material.

C-7  All parts of the  supporting  structures  of overhead  crossings  should be
     inspected  at  such   intervals  as  are   necessary  to  assure   adequate
     maintenance.  All  defective  parts  shall be  promptly  restored to a safe
     condition  and, with the  exception of wood poles,  should be replaced when
     they have  deteriorated  to 50% of their required  initial  strength.  Wood
     poles should be replaced when they have  deteriorated  to two-thirds  their
     required  initial  strength.  (The  ground  line  circumference  of various
     classes  and  species  of  poles  whose  strengths  have   deteriorated  to
     two-thirds  their  strength  when  new  is  given  in  Appendix  G.) In the
     replacement  inspection of treated  poles where decay is usually  internal,
     the  extent of the decay  shall be  determined  and  evaluated  in terms of
     external decay so that the tables in Appendix G may be applied.

C-B Underground crossings should be properly maintained.


                           Part I - Overhead Crossings
                                    D-General

D-1  Relative Levels of Supply and Communication  Wires: Every reasonable effort
     should be made in the  construction  or  reconstruction  of a  crossing  to
     arrange or  rearrange  the lines so that supply wires should be at a higher
     level  than the  communication  wires.  This  does not apply in the case of
     trolley  contact  wires  or  their  associated  feeders,   which  must,  of
     necessity, occupy a position below all other wires at the crossing.
<PAGE>

                                       -7-
                        Association of American Railroads
                              Communication Manual

1989                                                                  Part 1-B-1

D-2     Where  communication  lines  cross over  tracks and a supply line in the
        same span,  or where supply  wires are carried in the lower  position on
        the same crossing poles as the communication  wires, the construction of
        the  crossing  should be as follows,  depending  upon the voltage of the
        supply circuits:

        (a)      Where the  supply  line is open wire and the  voltage  does not
                 exceed 750 volts ac or dc to ground, constructions should be in
                 accordance with this manual part.

        (b)      Where  supply  circuits  of any  voltage  are  carried in cable
                 having  effectively  grounded  continuous  metal  sheath  or on
                 effectively grounded suspension strand, the construction should
                 be in accordance with this manual part.

        (c)      Where the supply line is open wire or is in cable not meeting
                 the requirements of (b) above and the voltage exceeds 750
                 volts ac to ground but does not exceed 5,000 volts between
                 conductors (2,900 volts to neutral or ground), the
                 construction should be in accordance with this manual part,
                 except that the communication conductors should be not smaller
                 than No. 6 AWG (0.162 in. in diameter) copper or No. 6 Stl WG
                 (0.192 in. in diameter) steel, or wires the equivalent
                 thereof.

        (d)      Where  the  supply  circuits  involved  are in excess of the ac
                 voltage  limitations in (c) above, or in excess of 750 volts dc
                 to ground, the construction  should not be made except with the
                 approval of all parties concerned.

D-3     Supply wires or cables carried on the poles supporting communication
        circuits crossing over railroad tracks should be constructed in
        accordance with the Manual Part 7-1 (Recommended Practices for
        Crossings of Electrical Supply Lines and Facilities of Railroads) For
        construction of signal supply circuits not in excess of 550 volts and
        3,200 watts, located below communication wires Manual Part l-A-6
        (Recommended Practices for Construction of Railroad communication Pole
        Lines).

D-4     Protection of Metals Against Corrosion: All pole line hardware should be
        of  material  that will not  corrode  excessively  under the  prevailing
        conditions.  Where  galvanizing is used, it should meet the requirements
        of the  specifications  for  galvanizing  of the  American  Society  for
        Testing & Materials.


<PAGE>


                                       -8-
                        Association of American Railroads
                              Communication Manual

Part 1-B-1                                                                  1989
- - - ------------------------------------------------------------------------------
D-5     Vertical Pull: The vertical distance from the top crossarm of a crossing
        pole to a straight line connecting the top crossarm of the next adjacent
        poles on either side of this  crossing pole should not exceed the values
        given in Table D-l.

                                    Table D-l
                            Recommended Vertical Pull

<TABLE>
<CAPTION>
Average Length of Two                                                          Allowable Vertical
Adjacent Spans in Feet                                                         Distance in Feet
- - - ----------------------                                                         ----------------
<S>                                                                                 <C>
         Less than 100                                                                8
         101 to 130                                                                  10
         131 to 150                                                                  12
         Over 150                                                                    14
</TABLE>

D-6     Length of Crossing Span: The crossing span should, where practicable,
        not exceed 100 ft. in the heavy loading district, 125 ft. in the
        medium loading district and 150 ft. in the light loading district. Where
        practicable, the adjacent spans should not exceed the length of the
        crossing span by more than 50%.

D-7     Where  practicable,  the supports  for the  crossing and next  adjoining
        spans should be located in a straight line.

D-8     The  crossing and each  adjoining  span should be kept free from decayed
        trees and as far as practicable from overhanging trees, which might fall
        into the line.

                                  E-Clearances

E-l     General:  The  conditions  under which all  clearances are specified are
        15.5C(60F)  and no wind.  Clearances  should  be  measured  between  the
        nearest parts of the objects concerned.  The clearances required by this
        section should be maintained at not less than the specified values.

E-2     Side Clearances from Rails: Poles or towers supporting the crossing
        span should, where practicable, be so located as to provide a minimum
        horizontal clearance of 17 ft. from the nearest track rail and a minimum
        horizontal clearance of 8 ft. between the nearest track rail and any
        crossarm, guy or other attachment. Where it is impracticable or
        undesirable to provide these clearances, they may be reduced if the
        approval of the railroad concerned is obtained. Where necessary to
        provide safe operating conditions, which require uninterrupted view
        along the tracks for signals, signs, etc., the parties concerned should
        cooperate to provide greater clearances than those specified above.


<PAGE>


                                       -9-

                        Association of American Railroads
                              Communication Manual

1989                                                                  Part 1-B-1
- - - ------------------------------------------------------------------------------
E-3     Vertical  Clearance  Above  Rails  for  Fixed  Supports:   The  vertical
        clearance  between  the lowest  wire,  guy, or cable and the top of rail
        should be not less than given in Table E-l.

                                    Table E-l
                   Recommended Vertical Clearance Above Rails

<TABLE>
<CAPTION>
                                                                       Vertical Clearance
                                                                               in Feet
                 <S>                                                          <C>
                 For Wires...............                                      27 (a) (b)
                 For guys, or cables carried
                      on suspension strands.                                   25 (b)
</TABLE>

        (a)      Where the wires are paralleled on the same street or highway by
                 a trolley  contact  conductor at a lower level,  this clearance
                 may be reduced to 25 ft.

        (b)      Where  agreed  to  by  the  railroad   concerned,   in  special
                 situations,  less  clearance may be provided if safety will not
                 be decreased thereby.

E-4     The clearances specified in Paragraph E-3 are applicable for crossing
        span lengths up to 175 ft. in the heavy loading district, 250 ft. in the
        medium loading district, and 350 ft. in the light loading district.
        Where crossing span lengths greater than these are involved, the
        clearances should be increased in accordance with Paragraph E-6 (a).

E-5     Vertical Clearances Between Wires Not on the Same Supporting Structures:
        The vertical  clearances  between  conductors  of the crossing  span and
        conductors  of other lines  should be not less than the values  shown in
        Table E-2. These clearances apply under the following conditions:

        (a)      Where the  conductors  at the upper  level have fixed  supports
                 (pin or strain type  insulators) or are supported on suspension
                 type  insulators in a suspended  position at both supports,  or
                 are  arranged  so that they are  restrained  from  displacement
                 toward the crossing.

        (b)      Where the length of the span of the conductors in the upper
                 position is not greater than 175 ft. in the heavy loading
                 district, 250 ft. in the medium loading district, or 350 ft. in
                 the light loading district.


<PAGE>




                                      -10-
                        Association of American Railroads
                              Communication Manual


Part 1-B-1                                                                  1989
- - - ------------------------------------------------------------------------------
                               Notes for Table E-2

        (a)      These clearances apply also to inverted levels.

        (b)      Except where neutral conductors of primary supply circuits are
                 concerned, a clearance of 2 ft. is permitted where the supply
                 conductor is above the communication conductor, provided the
                 crossing is not within 6 ft. of any pole concerned in the
                 crossing and the voltage to ground of the supply conductor does
                 not exceed 300 volts.

        (c)      This clearance should be increased to at least 6 ft. above
                 trolley contact conductors of more than 750 volts to ground.
                 This increased clearance should also be provided over
                 trolley contact conductors of lower voltage, unless the
                 crossover conductors are beyond reach of a trolley pole leaving
                 the trolley contact conductor, or are suitably protected
                 against damage from trolley poles leaving the trolley contact
                 conductor.

        (d)      A  conductor  which  is  effectively  grounded  throughout  its
                 length,   such  as  a  multi-grounded   neutral  wire,  and  is
                 associated  with  a  circuit  of 750 to  15,000  volts  between
                 conductors,  may have the clearances  specified for open supply
                 wires of 0 to 750 volts between conductors.

        (e)      This clearance should be increased to 6 ft. where the supply
                 wires cross over the communication line within 6 ft.
                 horizontally of a communication pole.

        (f)      This clearance should be increased to 4 ft. where communication
                 cables cross over open supply service wires.

        (g)      Where the required clearance is 2 ft., and where conditions
                 are such that the sag in the upper conductor would increase
                 more than 1.5 ft. at the crossing point, under full load
                 conditions, the 2 ft. clearance should be increased by the
                 amount of sag increase less 1.5 ft.

        (h)      Multi-grounded wye circuits not exceeding 8,700 volts to
                 ground may have a 4 ft. clearance if the lowest supply wire
                 at the crossing is not lower than a straight line joining the
                 points of support of the highest communication conductor,
                 provided the crossing does not occur within 6 ft. horizontally
                 of a communication pole.

<PAGE>


                                      -11-
                        Association of American Railroads
                              Communication Manual

1989                                                                 Part 1-B-1
- - - ------------------------------------------------------------------------------

                                    TABLE E-2
             Recommended Minimum Vertical Clearance In Feet Between
                        Wires Not on the Same Structures

     (All  voltages are between  wires,  except where  otherwise  stated,or  for
trolley contact wires where voltages are to ground.)

<TABLE>
<CAPTION>

                                     Nature of Wires at Higher Level (a)
                                     Open supply wires,
                                     0-750 volts; supply                                     Guys,
                    Communication    cables, all voltages           Open supply            span wires,
Nature of           wires, cables    having effectively             wires and               lightning
wires crossed       and suspension   grounded metal sheath          service drops           protection
Over (a)            strand           or suspension strand               (d)                   wires
                                                                    750 to   8,700 to
                                     Line wires   Service         8,700     50,000
                                     and cables    drops          Volts     Volts



<S>                  <C>            <C>            <C>            <C>        <C>            <C>
Communication
wires, cables and
suspension strand    2(g)            4(b) (g)      2(g)            4(e)      6(h)               2



Trolley contact      4(c)           -----          -----          ------    ------             4(c)
conductors

Guys and span wires,
lightning protection
wires, supply service
drops of 0 to 750
volts                2(f)             2            2              4            4               2(j)

</TABLE>




         (j)      Completely  insulated  sections of guys attached to supporting
                  structures  having no  conductor  of more than 8,700 volts may
                  have less than this clearance from each other.


E-6      Increased Clearances: Conductors in the upper position at the
         crossing, except guys or cables supported by suspension strand,
         should have greater clearances than given in Paragraphs E-3 and
         E-5 under the following conditions. The increases in (a), (b)
         and (c) below are cumulative. An example illustrating the
         method of determining the clearance between power wires and
         communication wires where an open wire communication line
         crosses over railroad tracks and under an open wire power line
         in the same span is given in Appendix K.


<PAGE>








                                      -12-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                 1989
- - - ------------------------------------------------------------------------------
         (a)      For crossing spans longer than specified in Paragraphs E-4 and
                  E-5 (b), clearances should be increased as follows:

                  (1) The  clearances  given in  Tables  E-l and E-2  should  be
                      increased  by the  following  amounts  for each 10 ft.  by
                      which  the  crossing   span  length   exceeds  the  limits
                      specified in Paragraphs E-4 and E-5(b):

                                    Table E-3
                   Recommended Clearance Increase Increments
<TABLE>
<CAPTION>
                                    Amount of Increase per 10 ft.
       Loading District        Large Conductors          Small Conductors*
<S>                                 <C>                       <C>
Heavy and Medium                    0.15 ft.                    0.30 ft.
Light                               0.10 ft.                    0.15 ft.
</TABLE>

* A small  conductor  is a  conductor  having an overall  diameter  of  metallic
material equal to or less than the following values:
<TABLE>
<CAPTION>

                              Outside Diameter of Conductor (Inch)
             Material             Solid            Stranded
<S>                              <C>              <C>
All copper                        0.160             0.250
Other than all copper             0.250             0.275
</TABLE>

         (2)      If the crossing point is located elsewhere than at mid-span of
                  the conductors in the upper position,  the required  clearance
                  may be obtained by multiplying the clearance determined in (1)
                  above by the appropriate  reduction factors specified in Table
                  E-4.  The  factors to be used in any case will depend upon the
                  basic clearance required by Tables E-l and E-2, and in no case
                  should  the  clearance,  after the  reduction  factor has been
                  applied, be less than such basic clearance.  In applying these
                  factors,  the  point of  crossing  in the  case of a  railroad
                  crossing is the track rail which is  farthest  from the nearer
                  support of the crossing span. In other  situations,  it is the
                  location  under the  conductors of any  topographical  feature
                  which is the determinant of the clearance.


<PAGE>



                                      -13-
                        Association of American Railroads
                              Communication Manual
 1989                                                              Part 1-B-1
- - - ------------------------------------------------------------------------------
                                    Table E-4
                     Recommended Clearance Reduction Factors
<TABLE>
<CAPTION>
Distance from Nearer Support                                      Basic Clearance
of Crossing Span to Point of
Crossing, in Percent of
Crossing                                               4 Ft.      6 Ft.     27 Ft.
                        Span Length                         Reduction Factor
<S>                                                   <C>       <C>        <C>
                             5                         0.35       0.47      0.85

                            10                         0.47       0.58      0.88

                            15                         0.60       0.68      0.91

                            20                         0.71       0.78      0.94

                            25                         0.82       0.85      0.96

                            30                         0.90       0.92      0.98

                            35                         0.96       0.98      0.99

                          40-50                        1.00       1.00      1.00
</TABLE>
        Interpolate for intermediate values

         (b)      For voltages in excess of 50,000 volts between wires,
                  the vertical clearances given in Table E-2 shou1d
                  be increased at the rate of 1/2-in. for each 1,000
                  volts of excess.

         (c)      Where the  conductors  of the line in the upper  position at a
                  crossing over a communication line are supported by suspension
                  type insulators, the clearances should be increased by such an
                  amount  that  the  values  specified  in  Table  E-2  will  be
                  maintained  in case of a broken  conductor in either  adjacent
                  span, provided such conductor is supported as follows:

                  (1)    At one  support  by  suspension  type  insulators  in a
                         suspended   position  and  at  the  other   support  by
                         insulators not free to swing (including semistrain-type
                         insulators).

                  (2)    At one support by strain insulators, and
                         at the other support by semistrain-type
                         insulators.

E-7      Clearance of  Conductors of a  Communication  Line from the Supports of
         Another Line: Where conductors of a communication line are carried near
         a supporting structure of any other line and not attached thereto, they
         should have a clearance  from any part of such  structure not less than
         the larger value required by either (a) or (b) below:
<PAGE>
                                      -14-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                  1989
- - - ------------------------------------------------------------------------------


         (a)      3 ft., if practicable.

         (b)      6 in. plus 1 in. for each 2 ft. of the distance from the
                  supporting structure of the line passed to the nearest
                  supporting structure of the communication line.

                              F-Loading Assumptions
F-1      Three degrees of severity are recognized for the loading due to weather
         conditions and are designated, respectively, as heavy, medium and light
         loading.  The  classification  of the United States on the basis of the
         districts  in which these  loadings  should be  considered  to apply is
         shown on the loading map,  Appendix A.  Crossing  wires and  supporting
         structures  should be  designed  for heavy,  medium and light  loading,
         dependent upon the district in which they are located.

F-2      In those states in which  detailed  local  districting of loading areas
         has been prescribed by state administrative authority, this districting
         should be  employed  in lieu of that  given in  Appendix  A. Where such
         districting has not been prescribed,  detailed districting or different
         loading  assumptions  from  those  given in this  specification  may be
         employed  where  agreed to by all  parties  concerned,  including  such
         administrative authority as may have jurisdiction.

F-3      The  specific  transverse  and  longitudinal  loadings  which should be
         assumed in  determining  the size of poles or the  strength  of guys in
         each of the loading districts are indicated below:

         (a)      Transverse Loading (Poles and Side Guys):

                  (1)      Heavy Loading: A horizontal wind pressure at right
                           angles to the direction of the line of 4 lb./sq. ft.
                           upon the projected area of the cylindrical surfaces
                           of all supported conductors and cables, together with
                           their supporting suspension strand when covered with
                           a layer of ice 1/2-in. in radial thickness and on
                           surfaces of poles without ice covering.

                           For supporting  structures,  other than unguyed poles
                           at crossings over major tracks, carrying more than 10
                           wires,  not including  cables supported by suspension
                           strand,  the  transverse  load due to the open  wires
                           should  be  calculated  on  two-thirds  of the  total
                           number of such wires, with a minimum of 10 wires.


<PAGE>

                                      -15-
                        Association of American Railroads
                              Communication Manual


1989                                                                  Part 1-B-1
- - - ------------------------------------------------------------------------------

                  (2)      Medium Loading: A horizontal wind pressure at right
                           angles to the direction of the line of 4 lb./sq. ft.
                           foot of the projected area of cylindrical surfaces of
                           all supported conductors and cables, together with
                           their supporting suspension strand, when covered with
                           a layer of ice 1/4-in, in radial thickness and on the
                           surfaces of the poles without ice covering.

                           For supporting  structures,  other than unguyed poles
                           at crossings over major tracks, carrying more than 10
                           wires,  not including  cables supported by suspension
                           strand,  the transverse  load should be calculated on
                           2/3 of the total number of such wires, with a minimum
                           of 10 wires.

                  (3)      Light Loading: A horizontal wind pressure at right
                           angles to the direction of the line of 9 lb./sq. ft.
                           upon the projected area of cylindrical surfaces of
                           all supported conductors and cables, together with
                           their supporting suspension strand, and poles,
                           without ice covering.

         (b)      Longitudinal  Loading (Poles and Head Guys):  The longitudinal
                  loading  should be assumed equal to a pull in the direction of
                  the crossing of all open wire conductors  supported,  the pull
                  of each conductor being taken as 50% of its ultimate  strength
                  in the heavy loading  district,  33-1/3% in the medium loading
                  district, and 22-1/4% in the light loading district.

                                     G-Poles
G-1      Material: Wood poles should be of suitable and selected timber free
         from observable defects that would decrease their strength or
         durability. Poles of Northern White Cedar, Western Red Cedar, Chestnut,
         Southern Pine, Lodgepole Pine and Douglas Fir shall meet the
         requirements of the American National Standards Institute for poles of
         these species. For convenience, tables giving the dimensions of various
         classes and lengths of these species of poles, ANSI Standard
         05.1-1987(Specifications and Dimensions for Wood Poles) are given in
         Appendix J. In the absence of specifications covering other species of
         poles, they should be considered on the basis of the ANSI standard for
         the species of pole having the nearest equivalent ultimate fiber
         stress. A table giving the ultimate fiber stresses of the species of
         poles in more common use in communication plant is included in Appendix
         H. The use of treated poles is recommended where practicable, but is
         not required, except in the case of timbers subject to rapid decay.


<PAGE>

                                      -16-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                  1989
- - - ------------------------------------------------------------------------------

G-2      Sizes:  Poles should be of a size not less than the class  specified in
         Table G-l for the  corresponding  number of wires carried.  If guys are
         omitted,  poles must be of sufficient strength to meet the requirements
         specified in Paragraph Q-9.

<TABLE>
<CAPTION>
                                    Table G-1
                                    ---------
                 Recommended Minimum Class (ANSI Classification)
                 -----------------------------------------------
                 10 Wires     11 to 20     21 to 40     Over 40
                 or less        Wires        Wires       Wires
<S>              <C>          <C>          <C>          <C>
Heavy and
Medium
Loading
Districts           7           6             5            4

Light
Loading
District            7           6             6            5
</TABLE>

G-3      Gains: Gains should not be cut to a depth of more than 1/2-in.

G-4      Setting:  Table G-2  specifies the minimum depth of setting for unguyed
         poles in average soil and in rock.

G-5      Where crossing  poles are head and side guyed,  the depth of setting of
         poles normally  employed by a constructing  company in the construction
         of its lines may, in general,  be used.  However, in no case should the
         depth of setting of a pole at a crossing  be more than 1 ft.  less than
         the depths  given in Table G-2,  where the pole is set in earth or more
         than 1/2-ft. less when set in rock.

G-6      Where soil  conditions  are such that the above  depths of setting will
         not  develop  the  strength  of the pole,  the pole should be set to an
         additional depth or other means used to properly secure the pole.

G-7      Pole  Mounts:  Where a crossing  pole is to be set on surface  rock,  a
         concrete bridge abutment, or other masonry or stone structure, approved
         pole mounts may be used.

G-8      Spliced Poles: Spliced poles should not be used to support the crossing
         span.

G-9      Stub Reinforced Poles: Stub reinforced poles should not be used at
         crossings over major tracks. At crossings over minor tracks, the use
         of stub reinforcements is permitted, provided:


<PAGE>

                                      -17-
                        Association of American Railroads
                              Communication Manual
1989                                                                 Part 1-B-1
- - - ------------------------------------------------------------------------------

                                    Table G-2

             Recommended Minimum Depth of Setting for Unguyed Poles

<TABLE>
<CAPTION>
  Length of         Depth in Feet in Average Soil for Different Classes of Poles          Depth in Feet
     Pole                                                                                    in Rock
   in Feet         Class 1 And 2    Class 3 And 4       Class 5 And 6       Class 7        All Classes
<S>                   <C>              <C>                 <C>             <C>               <C>
      16              -----            -----                4                3-3/4             3

      18              -----            -----                4-1/4            4                 3-1/4

      20              4-3/4            4-1/2                4-1/4            4                 3-1/4

      22              5                4-3/4                4-1/2            4-1/4             3-1/2

      25              5-1/2            5-1/4                4-3/4            4-1/2             3-3/4

      27              5-3/4            5-1/2                5                4-3/4             4

      30              6                5-3/4                5-1/4            5                 4-1/4

      35              6-1/2            6                    5-1/2            5-1/4             4-l/2

      40              6-3/4            6-1/4                5-3/4            5-1/2             4-3/4

      45              7                6-1/2                6                5-3/4             5

      50              7-1/4            6-3/4                6-1/4            6                 5-1/4

      55              7-1/2            7                    6-1/2            -----             5-1/2

      60              7-3/4            7-1/4                6-3/4            -----             5-3/4

      65              8                7-1/2                7                -----             6

      70              8-1/2            8                    7-1/2            -----             6

      75              9                8-1/2                8                -----             6

      80              9-l/2            9                    8-1/2            -----             -----

      85              10               9-1/2                9                -----             -----

      90              10-1/2           10                   9-1/2            -----             -----

</TABLE>


<PAGE>


                                      -18-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                  1989
- - - ------------------------------------------------------------------------------


         (a)    The pole above the ground  line is in good  condition  and is of
                sufficient size to develop its required strength.

         (b)    The stub  should have a ground  line  circumference  at least as
                great as would be required for a new pole in the same location.

         (c)    The stub should be set to a depth at least as great as that
                required for the pole being stubbed. (See Paragraph G-4.)

         (d)    The stub should be  attached to the pole by a method  which will
                develop at all times the required strength of the pole.

G-10     Stubs  should,  in  general,  be set at the side of the pole in a plane
         perpendicular  to the direction of the line. Where the direction of the
         line changes at the pole being stub  reinforced,  the stub should be at
         the side of the pole in a plane  bisecting  the angle of the corner and
         in the  direction of the corner pull.  Where head guys are omitted,  as
         permitted in Paragraph Q-9, the stub should be set on the track side of
         the pole in line with the crossing span.

                            H-Crossarms and Brackets

H-1      Wood crossarms  supporting the crossing span should be of fir,  treated
         yellow  pine or other  suitable  timber.  They  should  have a  nominal
         cross-section of not less than the values given in Table H-1.

                                    Table H-1
                    Recommended Dimensions of Wood Crossarms

<TABLE>
<CAPTION>
Number    Nominal  Length       Nominal Cross-section
of Wires  (Feet)  (Inches)             (Inches)

<S>       <C>       <C>        <C>
 2          1        4-1/2      2-5/16 by 3-5/16
 4          3        4-1/2      2-5/16 by 3-5/16
 6          6        0          2-3/4  by 3-3/4
10          8        6          2-3/4  by 3-3/4
10         10        0              3  by 4
12*        10        0          3-1/4  by 4-1/4
16**       10        0          3-1/4  by 4-1/4
</TABLE>

*        Where crossarms are bored for 1/2-in. steel pins, 3-in. by 4-1/4 in.
         crossarms may be used.

** Permitted in medium and light loading districts only.


<PAGE>
                                      -19-
                        Association of American Railroads
                              Communication Manual
1989                                                                  Part 1-B-1
- - - ------------------------------------------------------------------------------


H-2      Galvanized  or painted iron or steel  crossarms  of strengths  equal to
         those of the wood crossarms specified in Table H-1 may be used.

H-3      Double  crossarms  should be provided  on  crossing  poles and shall be
         attached  to the pole by  means  of a  5/8-in.  crossarm  bolt.  Double
         crossarms  longer than two-pin  should be equipped  with double  arming
         bolts at a point near each end of the crossarms.

H-4      Wood pole brackets may only be used at crossings  over minor tracks and
         should be in  duplicate  so as to afford two points of support for each
         conductor.

H-5      Single metal  brackets,  drive hooks or fixtures may be used to support
         distributing wire at railroad  crossings  provided such bracket,  drive
         hook or fixture and the  attachment  of the wire  thereto is such as to
         withstand the ultimate breaking strength of the wire.

                                J-Crossarm Braces

J-1      Crossarms and buckarms,  except two-pin crossarms,  should be so braced
         as to safely  support the loads to which they may be  subjected in use,
         including lineman working on them. This strength may be obtained by the
         use of one pair of crossarm braces. Steel crossarm braces should have a
         cross  section of not less than  1/8-in.  by 1-1/8 in. and a length not
         less than 20 in.

J-2      The braces should be attached to the pole by a drive screw not less
         than 1/2-in. by 3 in. and to the crossarm by bolts 3/8-in. in
         diameter.

                                     K-Pins

K-1      Insulator  pins should have strength  sufficient to withstand the loads
         to  which  they may be  subjected.  Steel or iron  pins  should  have a
         diameter  of shank not less than 1/2 in.  Wood pins  shall be sound and
         straight grained with a diameter of shank not less than 1-1/4 in.

                                  L-Insulators

L-1      Each  insulator  should be of such pattern,  design and material  that,
         when mounted on its pin, it will withstand,  without injury and without
         being pulled off the pin, the ultimate  strength of the conductor which
         it supports.

L-2      Each conductor (not including paired wire) unless dead-ended, should be
         tied to two  supporting  insulators  in such a manner  that  they  will
         securely  hold  the  conductor  to its  supporting  insulators  at each
         crossing pole.


<PAGE>

                                      -20-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                  1989
- - - ------------------------------------------------------------------------------


                                   M-Tie Wires

M-1      A  type  of  tie  should  be  used  which  will  develop  the  greatest
         practicable holding power without injury to the line conductors.

                                  N-Conductors

N-1      Conductors  should be of material or  combinations  of materials  which
         will not corrode excessively under the prevailing conditions.

N-2      Conductors of material  other than those  specified in Table N-1 should
         be of such size and so erected  as to have a  mechanical  strength  not
         less than that of the sizes of copper conductors specified in Table N-1

N-3      The minimum  allowable  sizes of  conductors  in a span crossing over a
         railroad  which  does not in the  same  span  also  cross  over  supply
         conductors  in  excess of 750  volts to  ground,  should be as given in
         Table N-1.

                                 Table No. N-1
                         Recommended Minimum Wire Sizes

<TABLE>
<CAPTION>
                                                      Spans Exceeding 125 Ft.
   Conductor           Spans 125 Ft. or Less          up to 150 FT. (Note)

                                      Diameter                          Diameter
                       Gage           Inches          Gage              Inches
<S>                     <C>           <C>           <C>                <C>

   Copper,
   hard-drawn           10 AWG        0.102           9 AWG             0.114

   Steel,
   Galvanized:
       In general       10 BWG        0.134           8 BWG             0.165
       In rural
       districts
       of arid
       regions          12 BWG        0.109          10 BWG             0.134
</TABLE>

Note:    If spans in excess of 150 ft. are necessary, the size of conductors
         specified above, or the sags of the conductors, should be
         correspondingly increased.

N-4      Paired or single  distributing wires without a suspension strand should
         in no case be used for spans  longer  than 100 ft.  in a heavy  loading
         district,  125 ft. in the medium loading  district,  and 150 ft. in the
         light  loading  district.  Each  wire  of a  pair  not  supported  by a
         suspension strand should have an ultimate strength of not less than 170
         lb. Single distributing wires not supported by suspension strand should
         have an ultimate strength of not less than 340 lb.

<PAGE>
                                      -21-
                        Association of American Railroads
                              Communication Manual
1989                                                                  Part 1-B-1
- - - ------------------------------------------------------------------------------

N-5   Splices  should,  so far as  practicable,  be avoided in the  crossing and
      adjacent  spans,  unless  they are of such a type and so made as to have a
      strength  substantially  equal to that of the conductors in which they are
      placed. Taps should be avoided in the crossing span where practicable, but
      if  required,  they should be of a type which will not impair the strength
      of the conductors to which they are attached.

                                     P-Sags

P-1   Table P-1 specifies  recommended sags for wires shown in Table N-1. Where,
      however, the wires in the communication line are strung in accordance with
      recognized  practices,  the  stringing  tensions  employed  in  the  line,
      generally will be satisfactory in the crossing span.

                                    Table P-1
                         Recommended Wire Stringing Sags
                       Heavy and Medium Loading Districts

<TABLE>
<CAPTION>
Span Length                       Temperature Deg. F
  in Feet        100      80      60      40      20       0      -20
<S>             <C>      <C>     <C>     <C>     <C>      <C>     <C>

                                  Sag in inches

   70            5-1/2    4-1/2   3-1/2   2-3/4   2-1/4   1-3/4   1-1/2

   80            7-1/2    6       4-1/2   3-1/2   2-3/4   2-1/2   2

   90            9-1/2    7-1/2   5-1/2   4-1/2   3-1/2   3       2-1/2

  100           11-1/2    9       7       5-1/2   4-1/2   3-3/4   3-1/4

  110           14       11       8-1/2   6-1/2   5-1/2   4-1/2   4

  120           17       13      10       8       6-1/2   5-1/2   4-1/2

  130           20       15      12       9-1/2   7-1/2   6-1/2   5-1/2

  140           23       18      14      11       8-1/2   7-1/2   6-1/2

  150           26       20      16      13      10       8-1/2   7
</TABLE>




<PAGE>

                                      -22-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                  1989
- - - ------------------------------------------------------------------------------

                              Table P-1 (Continued)
                         Recommended Wire Stringing Sags
                             Light Loading District

<TABLE>
<CAPTION>
Span Length                       Temperature Deg. F
  in Feet        120       100     80      60      40      20       0
<S>            <C>       <C>      <C>     <C>     <C>      <C>     <C>

                                  Sag in inches

   90           7-1/2     6-1/2    5-1/2   4-1/2   3-1/2   3       1-1/2

  100           9-1/2     8        6-1/2   5-1/2   4-1/2   3-3/4   3-1/4

  110          11-1/2     9-1/2    8       6-1/2   5-1/2   4-1/2   4

  120          14        11-1/2    9       7-1/2   6-1/2   5-1/2   4-1/2

  130          16        13       11       9       7-1/2   6-1/2   5-1/2

  140          18        15       13      10-1/2   8-1/2   7-1/2   6-1/2

  150          21        18       15      12      10       8-1/2   7
</TABLE>

                                     Q-Guys

Q-1   Material:  Guys should be of galvanized  steel or other material that will
      not corrode excessively under the prevailing conditions.

Q-2   Side Guys:  Poles  supporting the crossing span should be side-guyed  with
      guys  having  strengths  specified  in  Appendix  B, except as provided in
      Paragraphs  Q-9 and Q-l0.  The strength  specified in this appendix may be
      obtained by using various combinations of standard guys, which, when taken
      together, will give strength at least as great as that specified.

Q-3   For the purpose of side-guying, aerial cables and their suspension strands
      should have the wire equivalents given in Table Q-1.

                                    Table Q-1
                          Recommended Wire Equiva1ents

<TABLE>
<CAPTION>
                                Equivalent Number of Open Wires

Diameter of Cable       Heavy Loading   Medium Loading   Light Loading
                        District        District         District
<S>                     <C>             <C>              <C>

Less than 1-1/4 in.           3               4                10
1-1/4 to 2-1/4 in.            4               5                15
Over 2-1/4 in.                5               6                20
</TABLE>


<PAGE>


                                      -23-
                        Association of American Railroads
                              Communication Manual
1989                                                                  Part 1-B-1
- - --------------------------------------------------------------------------------

Q-4   Head Guys: Poles supporting the crossing span should be head-guyed away
      from the crossing span with guys having strengths specified in Appendix C,
      except as provided in Paragraph Q-9. The strength specified in this
      appendix may be obtained by using various combinations of standard guys,
      which, when taken together, will give strength at least as great as that
      specified. For lines carrying both open wire and aerial cable, head guying
      need be provided only for the number of wires in excess of 10 if the cable
      is supported by a 6,000-lb. suspension strand or for the number of wires
      in excess of 20 if the suspension strand is 10,000-lb. or stronger.

Q-5   Head  guys  should  be  installed  so as not to  increase  tension  in the
      crossing span. In order to facilitate the installation of the head guys, a
      section of 6,000-lb. strand may be placed between the crossing poles so as
      to provide an additional support for pulling up the head guys.

Q-6   Guying at Corners  and  Terminals:  Where the line  terminates  or changes
      direction or has substantially unbalanced tension at any crossing support,
      such additional guying as may be necessary should be provided to take care
      of the additional load.

Q-7   Where a line crossing a railroad  changes  direction more than ten degrees
      at either crossing  support,  the side guy within the angle may be omitted
      and the head guy, if  required,  should be placed in the  direction of the
      adjacent  span unless the angle of turn is greater than 60 degrees.  Where
      the angle is greater  than 60 degrees,  the head guy should be placed in a
      direction away from the crossing span.

Q-8   Corner guys  should  conform to standard  guying  requirements  unless the
      guying  prescribed  in  Appendix  B is  greater,  in which case the latter
      guying shall be provided.

Q-9   Omission of Guys: Guys may be omitted in the following cases:

      (a)   Side  guys  may be  omitted  where  the  poles  when new will not be
            stressed  to  more  than  25%  of  their  ultimate  strengths,  when
            subjected to the  transverse  load  specified in Paragraph  F-3 (a),
            except as otherwise  permitted in Paragraph Q-10. The maximum number
            of wires  which can be carried  by poles of various  classes to meet
            this requirement is given in Appendix D.

      (b)   Head  guys  may be  omitted  where  the  poles  when new will not be
            stressed  to more than  66-2/3%  of their  ultimate  strengths  when
            subjected to the longitudinal load

<PAGE>
                                      -24-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                 1989
- - -------------------------------------------------------------------------------

        specified in Paragraph  F-3 (b). The maximum  number of wires of various
        sizes  which can be  carried  by poles of  various  classes to meet this
        requirement is given in Appendix F.

Q-1O    Where a communication line paralleling a railroad track on the
        right-of-way of the railroad crosses any of the minor tracks listed
        under Subparagraphs (a), (c), (d) and (e) of Paragraph B-9, the side
        guys may be omitted, provided the crossing poles when new will not be
        stressed to more than 33-1/3% of their ultimate strengths when
        subjected to the transverse load specified in Paragraph F-3 (a). The
        maximum number of wires which can be carried by poles of various classes
        to meet this requirement is given in Appendix E.

Q-11    If, however,  under the conditions stated in Paragraph Q-l0, there is an
        angle in the line at either  crossing  pole,  corner guys  sufficient to
        withstand the  unbalanced  load on such poles should be installed.  Head
        guys may be omitted unless conductor tensions are not balanced at one or
        both poles due to the dead-ending of any of the wires.  Where conductors
        are  dead-ended,  guys of  strengths  specified  in Appendix C should be
        provided.


Q-12    Guying in Special Cases: Where, on account of physical conditions, it
        is impracticable to side guy the crossing poles, as specified in
        Paragraph Q-2, or to provide the strength of an unguyed pole specified
        in Paragraphs Q-9 and Q-l0, the requirements may be met by head-guying
        and side-guying the line as near as practicable to the crossing,
        provided the line is approximately straight and the intermediate poles
        are not of a class lower than those specified in Paragraph G-2 and that
        a strand of strength equivalent to the load in pounds for which
        head-guying is required, is run between the two guyed poles. Where such
        guying is employed, it should meet the requirements of paragraphs Q-2
        to Q-5, inclusive, and should be applied at a distance not exceeding
        500 ft. from the nearest crossing pole. The strand should be attached
        to the guyed poles close to the point at which the head guys are
        attached, and should be securely attached to every pole between the
        guyed poled.

Q-13    Guy Leads: Guy anchors should, where practicable, be located so that the
        horizontal  distance  from the ground line of the pole to the guy or guy
        rod will be not less than the height above ground of the  attachment  of
        the guy to the poles for head  guys,  and not less than  one-third  that
        height for side guys.  The guys should be attached as near to the center
        of the load as  practicable.  (See Figure  1B1-2 for method of measuring
        guy lead and height.)


<PAGE>


                                      -25-
                        Association of American Railroads
                              Communication Manual
1989                                                                 Part 1-B-1
- - -------------------------------------------------------------------------------

Q-14    Methods of Anchoring  Guys: The anchorage for guys shall in all cases be
        adequate to develop the required  strength of the guys attached to them.
        Guys should preferably be attached to anchors set in earth or secured in
        rock.  Where this is  impracticable,  guys may be  attached  to stubs or
        poles which are properly  anchor guyed,  or to buildings or other secure
        structures. Guys should not be attached to trees.

Q-15    Guy Rods: Guy rods not smaller than those  specified in Table Q-2 should
        be employed.  The length of guy rods should be  sufficient so that where
        the  anchor  is set to  adequate  depth,  the eye of the rod will not be
        below the surface of the ground.

                                    Table 0-2
                      Recommended Minimum Size of Guy Rods

<TABLE>
<CAPTION>
           Size of Guy                                         Diameter of Guy Rod
            (Pounds)                                                (Inches)
<S>                                                            <C>
             2,200                                                      1/2
             4,000                                                      1/2
             6,000                                                      5/8
            10,000                                                      3/4
            16,000                                                      7/8
</TABLE>

Q-16    Anchors:  Where  expandable  or screw anchors or screw anchors are used,
        manufacturer's  specifications  must be followed as to depth and size of
        anchor.

Q-17    Method of Securing Guy Strand: In securing guys,  clamps,  strand clamps
        or guy-grip  dead-ends of suitable  strength  should be employed.  A guy
        strand may be attached to the pole either by the  wrapping  method or by
        attachment to suitable eye bolts or approved connector.  The size of the
        eye bolt or  approved  connector  should be  sufficient  to develop  the
        required strength of the guy.

Q-18    Guards  for Guys:  When  anchor  guys are  located  so that  persons  or
        livestock  may come into  accidental  contact with them,  they should be
        equipped with suitable guards.

Q-19    Pole Braces:  Pole braces may be used in the place of guys called for in
        Paragraphs Q-2 to Q-8, inclusive, to provide equivalent strength.

                               R-Suspension Strand
R-1     Material:  Suspension  strands  should be of  galvanized  steel or other
        material  that  will  not  corrode   excessively  under  the  prevailing
        conditions.


<PAGE>



                                      -26-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                 1989
- - -------------------------------------------------------------------------------

R-2      Sizes:  For spans of 150 ft. or less, Table R-l gives the minimum
         sizes of suspension strand to be used for supporting different sizes
         of serial cable.

                                    Table R-1
                 Recommended Minimum Sizes of Suspension Strand
<TABLE>
<CAPTION>
        Weights of Cable in                                 Suspension Strand (Nominal
          Pounds per Foot                                   Ultimate Strength in Pounds)
<S>                                                                  <C>
        Less than 2.25                                                  6,000
        2.25 to 5                                                      10,000
        Exceeding 5 and less than 8.5                                  16,000
</TABLE>

R-3     For spans  exceeding 150 ft. or for heavier  cables,  a  proportionately
        larger  suspension  strand or other  proportionately  stronger  means of
        support should be used.

R-4     Attachment to Poles: The suspension strand should be attached to the
        pole by means of standard cable suspension clamp secured by a bolt not
        less than 5/8 in. in diameter extending through the pole. Three-bolt
        suspension clamps should be used with 10,000 and 16,000 lb. suspension
        strand; single-bolt suspension clamps may be used for 6,000 lb.
        suspension strand.

R-5     Where one or both of the crossing  poles is a corner pole and the corner
        pull is in excess of 5 ft.,  suspension  clamps with  flared  grooves or
        other  means that will  prevent  sharp  bends in the  suspension  strand
        should be  employed.  Where the cable is  carried  on the  inside of the
        corner,  reinforcing links or other equivalent means should also be used
        where the corner pull exceeds the values given in Table R-2.

                                    Table R-2
<TABLE>
<CAPTION>
             Size of
        Suspension Strand                                                     Pull on Corner
<S>                                                                           <C>
                6M                                                            15 ft. or over
               lOM                                                            15 ft. or over
               16M                                                            10 ft. or over
</TABLE>

R-6     Safety  straps,  grade  clamps,  reinforcing  bands or other  equivalent
        devices which will prevent progressive  stripping of cable from entering
        the  crossing  span  should be placed at each  crossing  pole for cables
        1-1/2 in. in diameter or larger.

R-7     Where the suspension  strand is dead-ended on a crossing pole, it may be
        attached by the  wrapping  method or by  attaching  it to a suitable eye
        bolt or approved connector.
<PAGE>

                                      -27-
                        Association of American Railroads
                              Communication Manual

1989                                                                  Part 1-B-1
- - - ------------------------------------------------------------------------------

        The size of the eye bolt should be  sufficient  to develop the  required
        strength of the suspension strand.

R-8     Sags: Suspension strands for aerial cables should be strung so that when
        the  cables  are in place the sags will be not less than  given in Table
        R-3.

                    S-Cable Attachments to Suspension Strands

S-1     Cables should be attached to the suspension  strand in the crossing span
        by means of suitable  metal rings or spirally  wound  lashing wire which
        will resist  corrosion.  The spacing of rings should not be greater than
        indicated  in Table S-1. The spirals of lashing wire should be so spaced
        that they will safely support the cable and prevent  appreciable sagging
        between points of support.  The metal rings or lashing wire should be so
        installed that the protective coating will not be damaged.

                                    Table S-1
                       Recommended Spacing of Cable Rings

<TABLE>
<CAPTION>
                  Weight of Cable in                                    Spacing of Cable Rings
                  Pounds per Foot                                            in Inches
                  <S>                                                           <C>
                      Less than 5                                                20
                      5 to 8.5                                                   15
</TABLE>

                         Part II - Underbridge Crossings
                                    T-General

T-1     Avoidance of Attachments:  The line preferably  should be so graded that
        it will be unnecessary to make attachment to the bridge  structure.  If,
        for any reason,  it is impracticable to grade a cable line to pass under
        a bridge and it is  undesirable  to attach to the bridge,  vertical runs
        may be made on poles adjacent to the bridge.

T-2     Attachments:  Unless  approved by the railroad  company,  attachments to
        railroad  steel  bridges  should not be made by devices that require the
        drilling  or cutting of the bridge  structure  or the removal of rivets,
        and the attachments should be so made that wires,  cables and suspension
        strand will not be in metallic contact with the bridge structure.

T-2     Clearance from  Abutments:  The clearance of any conductor from the face
        of the abutment,  when not attached  thereto,  should be not less than 3
        ft.  for steel  bridges.  Cables or  paired  wires and their  suspension
        strand may be attached  directly to the face of the  abutment if located
        not less than 24 in. below the  elevation  of the bridge seat,  and they
        should provide suitable  clearance for pedestrians,  vehicles,  etc., as
        may be necessary.


<PAGE>




                                      -28-
                        Association of American Railroads
                              Communication Manual

Part 1-B-1                                                                  1989
- - - ------------------------------------------------------------------------------

                                    Table R-3
                    Recommended Minimum Sags in Aerial Cables
                            (No Ice or Wind Loading)

<TABLE>
<CAPTION>
Average Weight of              Size of                                Sags in inches for Spans
Cables in Pounds       Temp.   Strand       90       100       110        120       130        140        150
per Foot               F.                   Ft.       Ft.       Ft.        Ft.       Ft.        Ft.        Ft.
<S>                   <C>     <C>           <C>      <C>       <C>     <C>          <C>         <C>       <C>
                        20                    5         6         7          8        10         11         13
Up to .6                60      6,000         5         7         8         10        11         13         15
                       100                    6         8        10         12        14         16         18

Exceeding .6 but        20                    6         7         9         10        12         14         16
not exceeding .8        60      6,000         6         8        10         12        14         16         18
                       100                    8         9        11         13        16         18         21

Exceeding .8 but        20                    7         9        11         13        15         17         20
not exceeding 1.1       60      6,000         8        10        12         14        17         19         22
                       100                    9        11        13         15        18         21         24

Exceeding 1.1 but       20                    9        11        13         16        19         22         25
not exceeding 1.4       60      6,000        10        12        15         17        20         24         27
                       100                   10        13        16         19        22         25         29

Exceeding 1.4 but       20                   10        13        16         19        22         25         29
not exceeding 1.8       60      6,000        11        14        17         20        23         27         31
                       100                   12        15        18         21        25         29         33

Exceeding l.8 but       20                   12        14        17         20        24         28         32
not exceeding 2.25      60      6,000        12        15        18         22        26         30         34
                       100                   13        16        20         24        28         32         37

Exceeding 2.25 but      20                    8        10        12         15        17         20         23
not exceeding 2.8       60     10,000         9        11        13         16        19         22         25
                       100                   10        12        15         17        20         24         27

Exceeding 2.8 but       20                   10        13        16         19        22         25         29
not exceeding 3.9       60     10,000        11        14        17         20        23         27         31
                       100                   12        15        18         21        25         29         33

Exceeding 3.9 but       20                   12        14        17         20        24         28         32
not exceeding 4.4       60     10,000        12        15        18         22        26         30         34
                       100                   13        16        19         23        27         31         36

Exceeding 4.4 but       20                   13        16        19         23        27         31         36
not exceeding 5.0       60     10,000        14        17        20         24        29         33         38
                       100                   14        18        22         26        30         35         40
</TABLE>

<PAGE>



                                      -29-
                        Association of American Railroads
                              Communication Manual

1989                                                                  Part 1-B-1

                              Table R-3 (Continued)

<TABLE>
<CAPTION>
Average Weight of              Size of                                Sags in inches for Spans
Cables in Pounds       Temp.   Strand       90       100       110        120       130        140        150
per Foot               F.                   Ft.       Ft.       Ft.        Ft.       Ft.        Ft.        Ft.
<S>                   <C>     <C>           <C>      <C>       <C>       <C>        <C>         <C>       <C>
                        20                   11        13       16          19       23         26         30
Up to 5.0 but           60     16,000        12        14       17          20       24         28         32
not exceeding 6.3      100                   12        15       18          22       26         30         24

Exceeding 6.3 but       20                   12        14       17          20       24         28         32
not exceeding 7.2       60     16,000        12        15       18          22       26         30         34
                       100                   13        16       20          24       28         32         37

Exceeding 7.2 but       20                   13        16       19          22       26         31         35
not exceeding 8.1       60     16,000        13        16       19          23       27         31         36
                       100                   14        17       20          24       29         33         38

Exceeding 8.1 but       20                   13        16       20          24       28         32         37
not exceeding 8.6       60     16,000        14        17       20          24       29         33         38
                       100                   14        18       22          26       30         35         40
</TABLE>





T-4     Clearance  from Bridge  Structure:  The clearance  between any conductor
        attached  to the  bridge in open  construction,  and any  portion of the
        bridge  structure  should  preferably  be not less than 6 in., but in no
        case less than 3 in. The clearance between any conductor not attached to
        the bridge and any portion of the bridge structure should  preferably be
        not less than 1 ft., but in no case less than 6 in.

                        Part III - Underground Crossings
                                    U-General

U-1     Arrangement for Work: The work should be done at such time and in such a
        manner as not to interfere with the proper and safe use or operation of
        the property and tracks of the railroad company, previous arrangements
        having been made with the duly authorized representative of the
        railroad company for date and time of commencement. Where iron or mild
        steel pipes are used, as permitted in Paragraph U-7(d), consideration
        should be given to forcing or driving them under the roadbed instead of
        laying in an open trench.

U-2     Location:  The underground  system on the railroad property should be so
        located as to be subject to the least practicable  disturbance.  Railway
        tracks and underground  structures,  including catch basins,  gas pipes,
        etc., should be avoided where practicable. The manholes, pull boxes, and
        terminals should, where practicable, be located away from the roadbed.

<PAGE>
                                      -30-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                  1989
- - - ------------------------------------------------------------------------------

U-3     Side Clearance from Rail: Where underground conduit construction
        terminates at terminal poles, the side clearance of such poles from the
        nearest track rail should be as provided in Paragraph E-2. Where
        manholes, handholes, etc., are employed, which project above the surface
        of the ground, the side clearance, unless physical conditions prevent,
        shall be not less than 17 ft. from the nearest track rail, except that
        at sidings, a clearance of 7 ft. may be allowed. At loading sidings,
        sufficient space shall be left for a driveway.

U-4     Clearance Below Base of Rail: The top of all conduit protection,  except
        as specified in Paragraph U-8 should  generally be located at a depth of
        not  less  than  48  in.   below  the  base  of  rail.   Where  this  is
        impracticable,  or for other  reasons,  this clearance may be reduced by
        agreement between the parties concerned. In no case, however, should the
        top of the  conduit  protection  extend  higher  than the  bottom of the
        ballast section which is subject to working or cleaning.

U-5     Where unusual  conditions  exist or where  proposed  construction  would
        interfere  with existing  construction,  a greater depth than  specified
        above may be required.

U-6     Arrangement of Conduit  System:  The arrangement of ducts in the conduit
        system contemplated under this specification  should consist of not more
        than four ducts of vitrified clay, four impregnated fiber ducts or three
        creosoted   wood  ducts  in  width.   Where   other   arrangements   are
        contemplated,  additional strength of construction and protection may be
        required.

U-7     Protection of Ducts:  Ducts  extending  under the roadbed section of the
        right-of-way  should be protected under the roadbed section as specified
        below and for a distance of at least 6 ft.  beyond each outside rail. In
        other sections of the right-of-way,  concrete,  creosoted plank or other
        forms of protection should be provided where necessary to prevent injury
        to the conduit system.

        (a)      Vitrified Clay Ducts: The ducts should be laid on at least 4
                 in. of concrete with at least 3 in. of concrete on the top and
                 sides.

        (b)      Impregnated Fiber and Other Tubular Composition Ducts: The
                 ducts should be completely encased in concrete. The encasement
                 should be at least 4 in. thick on bottom and at least 3 in.
                 thick on top and sides.

        (c)      Creosoted Wood Ducts: The ducts should be protected on the top
                 and bottom by means of creosoted wood plank not less than 1-1/2
                 in. in thickness or by 3 in. of concrete.



<PAGE>
                                      -31-
                        Association of American Railroads
                              Communication Manual
1989                                                                  Part 1-B-1
- - - ------------------------------------------------------------------------------

        (d)      Iron or Mild Steel Pipes: Such pipes should normally be encased
                 in concrete as provided in (b) above.  However,  where physical
                 or chemical conditions will permit, a conduit system consisting
                 of a group of not more than four iron or mild  steel  pipes not
                 more than 4 in. in  diameter  may be laid  beneath  the roadbed
                 without any form of protection.

U-8     Where physical and chemical conditions will permit, a conduit consisting
        of not more than two iron pipes, not exceeding 4 in. in diameter, or two
        creosoted wood ducts not exceeding 6 in. square, or one or more cables
        of a type designed for burying directly in the earth may be laid in the
        ground beneath railroad tracks without any form of protection at a
        minimum depth of 48 in. below the base of the rail, unless the worked
        ballast section of the roadbed exceeds 18 in., in which case the conduit
        shall be laid below the ballast section. Cables under main line tracks
        should preferably be installed in conduit to prevent disturbance to the
        roadbed at times of replacement.

U-9     Excavation:  The  excavated  material  shall  be so  placed  as  not  to
        interfere  with  traffic.  Ballast  material  excavated  should  be kept
        separate and free from earth.

U-10    Shoring:  Where necessary to prevent caving,  the sides of trench should
        be supported with suitable  planks and bracing.  No bracing shall extend
        above  the base of the rail or be  attached  in any way to the  rails or
        ties.

U-ll    Grading and Drainage: The trench should be so graded that it will have a
        fall of at least 3 in. in l00 ft. toward the lower manhole or terminal,
        or from an intermediate point toward both manholes or terminals, and the
        bottom of the trench should be graded evenly. Where conditions require,
        a sump or other suitable drainage should be provided for manholes.

U-12    Backfilling:  The trench should be backfilled with earth to the subgrade
        line  and  tamped.  Track  ballast  shall  be  replaced  under  railroad
        supervision.

U-13    Removing Surplus Material: All surplus material remaining after the work
        has been  finished  should be removed,  and if disposed of upon railroad
        property, it should be under railroad supervision.

U-14    Concrete:  All concrete employed should be such that when tested in 6 by
        12 inch cylinders after 28 days, it should  withstand a compressive test
        of not less than 2,000 lb./sq. in. square inch without rupture. Concrete
        should be thoroughly tamped.


<PAGE>
                                      -32-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                  1989
- - - ------------------------------------------------------------------------------


                        Appendix A: District Loading Map




                        [DISTRICT LOADING MAP DIAGRAM]
<PAGE>

                                      -33-
                        Association of American Railroads
                              Communication Manual

1989                                                                  Part 1-B-1
- - - ------------------------------------------------------------------------------


                                   Appendix B
             Recommended Strength of Side Guys Required, in Pounds
                (Combinations of Standard Size Guys May Be Used)

            Average of Crossing and Adjacent Spans 100 Feet or Less

<TABLE>
<CAPTION>
Number    Ratio of Guy Lead to Height Not less than
of        1           2/3            1/2           1/3
Wires
                         Heavy Loading
                         -------------
<S>      <C>         <C>            <C>           <C>
  2       2,200       2,200          2,200         2,200
  4       2,200       2,200          2,200         2,200
  6       2,200       2,200          2,200         4,000
 10       2,200       2,200          4,000         4,000
 20       4,000       4,000          4,000         6,000
 30       4,000       4,000          6,000        10,000
 40       4,000       6,000         10,000        10,000
 50       6,000      10,000         10,000        12,000
 60       6,000      10,000         10,000        16,000
 70      10,000      10,000         12,000        16,000
 80      10,000      10,000         16,000        20,000
</TABLE>

<PAGE>

                                      -34-
                        Association of American Railroads
                              Communication Manual

1989                                                                  Part 1-B-1
- - - ------------------------------------------------------------------------------


                             Appendix B (Continued)
             Recommended Strength of Side Guys Required, in Pounds
                (Combinations of Standard Size Guys May Be Used)

            Average of Crossing and Adjacent Spans 100 Feet or Less

<TABLE>
<CAPTION>
Number    Ratio of Guy Lead to Height Not less than
of        1           2/3            1/2           1/3
Wires
                         Medium Loading
                         --------------
<S>       <C>         <C>           <C>           <C>
  2       2,200       2,200          2,200         2,200
  4       2,200       2,200          2,200         2,200
  6       2,200       2,200          2,200         2,200
 10       2,200       2,200          2,200         2,200
 20       4,000       4,000          4,000         4,000
 30       4,000       4,000          4,000         6,000
 40       4,000       4,000          4,000         6,000
 50       4,000       4,000          6,000        10,000
 60       4,000       6,000          6,000        10,000
 70       4,000       6,000         10,000        10,000
 80       6,000       6,000         10,000        10,000
</TABLE>

<PAGE>

                                      -35-
                        Association of American Railroads
                              Communication Manual

1989                                                                  Part 1-B-1
- - - ------------------------------------------------------------------------------


                             Appendix B (Continued)

            Average of Crossing and Adjacent Spans 100 Feet or Less

<TABLE>
<CAPTION>
Number    Ratio of Guy Lead to Height Not less than
of        1           2/3            1/2           1/3
Wires
                         Light Loading
                         -------------
<S>       <C>         <C>           <C>           <C>
  2       2,200       2,200          2,200         2,200
  4       2,200       2,200          2,200         2,200
  6       2,200       2,200          2,200         2,200
 10       2,200       2,200          2,200         2,200
 20       4,000       4,000          4,000         4,000
 30       4,000       4,000          4,000         6,000
 40       4,000       4,000          4,000         6,000
 50       4,000       4,000          6,000         6,000
 60       4,000       4,000          6,000        10,000
 70       4,000       6,000          6,000        10,000
 80       4,000       6,000         10,000        10,000
</TABLE>
<PAGE>
                                      -36-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                 1989
- - - -----------------------------------------------------------------------------

                             Appendix B (Continued)
              Recommended Strength of Side Guys Required, in Pounds
                (Combinations of Standard Size Guys May Be Used)

             Average of Crossing and Adjacent Spans 100 to 125 Feet

<TABLE>
<CAPTION>
Number          Ratio of Guy Lead to Height Not less than
of             1            2/3           1/2           1/3
Wires
                                  Heavy Loading
                               -------------
<S>           <C>          <C>           <C>           <C>
  2            2,200        2,200         2,200         2,200
  4            2,200        2,200         2,200         2,200
  6            2,200        2,200         2,200         4,000
 10            2,200        4,000         4,000         6,000
 20            4,000        4,000         4,000         6,000
 30            4,000        6,000         6,000        10,000
 40            6,000       10,000        10,000        12,000
 50            6,000       10,000        10,000        16,000
 60           10,000       10,000        12,000        16,000
 70           10,000       12,000        16,000        20,000
 80           10,000       16,000        16,000        26,000
</TABLE>



<PAGE>


                                      -37-
                        Association of American Railroads
                              Communication Manual


1989                                                                 Part 1-B-1
- - - -----------------------------------------------------------------------------

                             Appendix B (Continued)

            Average of Crossing and Adjacent Spans 100 to 125 Feet

<TABLE>
<CAPTION>
Number         Ratio of Guy Lead to Height Not less than
of             1             2/3           1/2           1/3
Wires
                                 Medium Loading
                               --------------
<S>           <C>          <C>           <C>           <C>
  2            2,200         2,200         2,200         2,200
  4            2,200         2,200         2,200         2,200
  6            2,200         2,200         2,200         2,200
 10            2,200         2,200         2,200         4,000
 20            4,000         4,000         4,000         4,000
 30            4,000         4,000         4,000         6,000
 40            4,000         4,000         6,000        10,000
 50            4,000         6,000         6,000        10,000
 60            6,000         6,000        10,000        10,000
 70            6,000        10,000        10,000        12,000
 80            6,000        10,000        10,000        16,000
</TABLE>


<PAGE>


                                      -38-
                        Association of American Railroads
                              Communication Manual

Part 1-B-1                                                                 1989
- - - -----------------------------------------------------------------------------

                             Appendix B (Continued)
              Recommended Strength of Side Guys Required in Pounds
                (Combinations of Standard Size Guys May Be Used)

             Average of Crossing and Adjacent Spans 100 to 125 Feet

<TABLE>
<CAPTION>
Number             Ratio of Guy Lead to Height Not less than
of             1            2/3           1/2           1/3
Wires
                                  Light Loading
                               -------------
<S>           <C>          <C>           <C>           <C>
  2            2,200        2,200         2,200         2,200
  4            2,200        2,200         2,200         2,200
  6            2,200        2,200         2,200         2,200
 10            2,200        2,200         2,200         2,200
 20            4,000        4,000         4,000         4,000
 30            4,000        4,000         4,000         6,000
 40            4,000        4,000         6,000         6,000
 50            4,000        6,000         6,000        10,000
 60            4,000        6,000         6,000        10,000
 70            6,000        6,000        10,000        10,000
 80            6,000        6,000        10,000        12,000
</TABLE>



<PAGE>

                                      -39-
                        Association of American Railroads
                              Communication Manual
1989                                                                  Part 1-B-1
- - - ------------------------------------------------------------------------------


                             Appendix B (Continued)

             Average of Crossing and Adjacent Spans 125 to 150 Feet

<TABLE>
<CAPTION>
Number          Ratio of Guy Lead to Height Not less than
of                1          2/3        1/2         1/3
Wires

                              Heavy Loading
                              -------------

<S>             <C>        <C>        <C>         <C>
 2               2,200      2,200      2,200       2,200

 4               2,200      2,200      2,200       4,000

 6               2,200      2,200      4,000       4,000

10               4,000      4,000      4,000       6,000

20               4,000      4,000      6,000      10,000

30               6,000      6,000     10,000      10,000

40               6,000     10,000     10,000      16,000

50              10,000     10,000     12,000      16,000

60              10,000     12,000     16,000      20,000

70              10,000     16,000     16,000      26,000

80              12,000     16,000     20,000      26,000
</TABLE>


<PAGE>


                                      -40-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                  1989
- - - ------------------------------------------------------------------------------


                             Appendix B (Continued)
             Recommended Strength of Side Guys Required, in Pounds
                (Combinations of Standard Size Guys May Be Used)

             Average of Crossing and Adjacent Spans 125 to 150 Feet


<TABLE>
<CAPTION>
Number          Ratio of Guy Lead to Height Not less than
of                1          2/3        1/2         1/3
Wires

                             Medium Loading
                             --------------

<S>             <C>        <C>        <C>         <C>
 2               2,200      2,200      2,200       2,200

 4               2,200      2,200      2,200       2,200

 6               2,200      2,200      2,200       2,200

10               2,200      2,200      2,200       4,000

20               4,000      4,000      4,000       4,000

30               4,000      4,000      6,000       6,000

40               4,000      4,000      6,000      10,000

50               6,000      6,000     10,000      10,000

60               6,000     10,000     10,000      12,000

70               6,000     10,000     10,000      16,000

80              10,000     10,000     12,000      16,000
</TABLE>


<PAGE>

                                      -41-
                        Association of American Railroads
                              Communication Manual
1989                                                                  Part 1-B-1
- - - ------------------------------------------------------------------------------


                             Appendix B (Continued)


             Average of Crossing and Adjacent Spans 125 to 150 Feet


<TABLE>
<CAPTION>
Number          Ratio of Guy Lead to Height Not less than
of                1          2/3        1/2         1/3
Wires

                             Light Loading
                             -------------

<S>             <C>        <C>        <C>         <C>
 2              2,200       2,200      2,200       2,200

 4              2,200       2,200      2,200       2,200

 6              2,200       2,200      2,200       2,200

10              2,200       2,200      2,200       2,200

20              4,000       4,000      4,000       4,000

30              4,000       4,000      4,000       6,000

40              4,000       4,000      6,000      10,000

50              4,000       6,000      6,000      10,000

60              6,000       6,000     10,000      10,000

70              6,000      10,000     10,000      12,000

80              6,000      10,000     10,000      16,000
</TABLE>

<PAGE>

                                      -42-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                  1989
- - - ------------------------------------------------------------------------------


                             Appendix B (Continued)
             Recommended Strength of Side Guys Required, in Pounds
                (Combinations of Standard Size Guys May Be Used)


             Average of Crossing and Adjacent Spans 150 to 175 Feet


<TABLE>
<CAPTION>
Number          Ratio of Guy Lead to Height Not less than
of                1          2/3        1/2         1/3
Wires

                             Heavy Loading
                             -------------

<S>             <C>        <C>        <C>         <C>
 2              2,200       2,200      2,200       2,200

 4              2,200       2,200      2,200       4,000

 6              2,200       2,200      4,000       4,000

10              4,000       4,000      6,000       6,000

20              4,000       6,000      6,000      10,000

30              6,000      10,000     10,000      12,000

40             10,000      10,000     12,000      16,000

50             10,000      12,000     16,000      20,000

60             10,000      16,000     16,000      26,000

70             12,000      16,000     20,000      30,000

80             16,000      20,000     26,000      30,000
</TABLE>


<PAGE>

                                      -43-
                        Association of American Railroads
                              Communication Manual

1989                                                                  Part 1-B-1
- - - ------------------------------------------------------------------------------

                             Appendix B (Continued)

             Average of Crossing and Adjacent Spans 150 to 175 Feet

<TABLE>
<CAPTION>
     Number                  Ratio of Guy Lead to Height Not less than
     of                  1               2/3             1/2             1/3
     Wires
                                    Medium Loading
                                    --------------
<S>                    <C>            <C>            <C>              <C>
         2               2,200           2,200           2,200           2,200
         4               2,200           2,200           2,200           2,200
         6               2,200           2,200           2,200           4,000
        10               2,200           2,200           4,000           4,000
        20               4,000           4,000           4,000           6,000
        30               4,000           4,000           6,000          10,000
        40               4,000           6,000          10,000          10,000
        50               6,000          10,000          10,000          12,000
        60               6,000          10,000          10,000          16,000
        70              10,000          10,000          12,000          16,000
        80              10,000          10,000          16,000          20,000

</TABLE>


<PAGE>


                                      -44-
                        Association of American Railroads
                              Communication Manual

Part 1-B-1                                                                  1989
- - - ------------------------------------------------------------------------------

                             Appendix B (Continued)

             Recommended Strength of Side Guys Required, in Pounds
                (Combinations of Standard Size Guys May Be Used)

             Average of Crossing and Adjacent Spans 150 to 175 Feet

<TABLE>
<CAPTION>
     Number                  Ratio of Guy Lead to Height Not less than
     of                  1               2/3             1/2             1/3
     Wires
                                  Light Loading
                                 -------------
<S>                    <C>            <C>            <C>              <C>
         2               2,200           2,200           2,200           2,200
         4               2,200           2,200           2,200           2,200
         6               2,200           2,200           2,200           2,200
        10               2,200           2,200           2,200           4,000
        20               4,000           4,000           4,000           4,000
        30               4,000           4,000           6,000           6,000
        40               4,000           6,000           6,000          10,000
        50               6,000           6,000          10,000          10,000
        60               6,000          10,000          10,000          12,000
        70               6,000          10,000          10,000          16,000
        80              10,000          10,000          10,000          16,000
</TABLE>




<PAGE>


                                      -45-
                        Association of American Railroads
                              Communication Manual

1989                                                                  Part 1-B-1
- - --------------------------------------------------------------------------------

                             Appendix B (Continued)

             Average of Crossing and Adjacent Spans 175 to 200 Feet

<TABLE>
<CAPTION>
     Number                  Ratio of Guy Lead to Height Not less than
     of                  1               2/3             1/2             1/3
     Wires
                                  Heavy Loading
                                 -------------
<S>                    <C>            <C>            <C>              <C>
         2               2,200           2,200           2,200           2,200
         4               2,200           2,200           2,200           4,000
         6               2,200           4,000           4,000           6,000
        10               4,000           4,000           6,000          10,000
        20               4,000           6,000          10,000          10,000
        30               6,000          10,000          10,000          16,000
        40              10,000          10,000          16,000          20,000
        50              10,000          16,000          16,000          26,000
        60              12,000          16,000          20,000          26,000
        70              16,000          20,000          26,000          30,000
        80              16,000          20,000          26,000          40,000
</TABLE>


<PAGE>


                                      -46-
                        Association of American Railroads
                              Communication Manual

Part 1-B-1                                                                  1989
- - --------------------------------------------------------------------------------

                             Appendix B (Continued)

             Recommended Strength of Side Guys Required, in Pounds
                (Combinations of Standard Size Guys May Be Used)

             Average of Crossing and Adjacent Spans 175 to 200 Feet

<TABLE>
<CAPTION>
     Number                  Ratio of Guy Lead to Height Not less than
     of                  1               2/3             1/2             1/3
     Wires
                                 Medium Loading
                                 --------------
<S>                    <C>            <C>            <C>              <C>
         2               2,200           2,200           2,200           2,200
         4               2,200           2,200           2,200           2,200
         6               2,200           2,200           2,200           4,000
        10               2,200           2,200           4,000           4,000
        20               4,000           4,000           4,000           6,000
        30               4,000           6,000           6,000          10,000
        40               6,000           6,000          10,000          10,000
        50               6,000          10,000          10,000          16,000
        60              10,000          10,000          12,000          16,000
        70              10,000          10,000          16,000          20,000
        80              10,000          12,000          16,000          20,000
</TABLE>
<PAGE>

                                      -47-
                        Association of American Railroads
                              Communication Manual
1989                                                                  Part 1-B-1
- - --------------------------------------------------------------------------------


                             Appendix B (Continued)

             Average of Crossing and Adjacent Spans 175 to 200 Feet

<TABLE>
<CAPTION>
Number          Ratio of Guy Lead to Height Not less than
of                1          2/3        1/2         1/3
Wires

                              Light Loading
                              -------------

<S>             <C>        <C>        <C>         <C>
 2               2,200      2,200      2,200       2,200

 4               2,200      2,200      2,200       2,200

 6               2,200      2,200      2,200       2,200

10               2,200      2,200      2,200       4,000

20               4,000      4,000      4,000       6,000

30               4,000      4,000      6,000      10,000

40               4,000      6,000      6,000      10,000

50               6,000      6,000     10,000      12,000

60               6,000     10,000     10,000      16,000

70              10,000     10,000     10,000      16,000

80              10,000     10,000     12,000      16,000
</TABLE>


<PAGE>


                                      -48-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                  1989
- - --------------------------------------------------------------------------------


                                   Appendix C
             Recommended Strength of Head Guys Required, in Pounds
                (Combinations of Standard Size Guys May Be Used)


<TABLE>
<CAPTION>
Number               Ratio of Guy Lead to Height Not less than
of
Wires             1-1/4       1         3/4        2/3        1/2

                                  Heavy Loading
                                   -------------

<S>             <C>        <C>        <C>         <C>        <C>
 2               4,000      4,000      4,000       4,000      4,000

 6               4,000      4,000      4,000       4,000      6,000

10               6,000      6,000      6,000      10,000     10,000

20              10,000     10,000     12,000      16,000     16,000

30              16,000     16,000     20,000      20,000     26,000

40              20,000     20,000     26,000      26,000     32,000

50              20,000     20,000     30,000      32,000     42,000

60              26,000     30,000     36,000      36,000     48,000

70              30,000     30,000     40,000      48,000     60,000

80              36,000     40,000     48,000      60,000     70,000

                                 Medium Loading
                                   --------------

 2               4,000      4,000      4,000       4,000      4,000

 6               4,000      4,000      4,000       4,000      4,000

10               4,000      4,000      6,000       6,000      6,000

20               6,000     10,000     10,000      10,000     12,000

30              10,000     10,000     12,000      16,000     16,000

40              12,000     16,000     16,000      16,000     20,000

50              16,000     16,000     20,000      20,000     26,000

60              20,000     20,000     26,000      26,000     30,000

70              20,000     20,000     26,000      30,000     36,000

80              26,000     26,000     30,000      32,000     40,000
</TABLE>


<PAGE>

                                      -49-
                        Association of American Railroads
                              Communication Manual
1989                                                                  Part 1-B-1
- - --------------------------------------------------------------------------------


                             Appendix C (Continued)

<TABLE>
<CAPTION>
Number               Ratio of Guy Lead to Height Not less than
of
Wires             1-1/4       1         3/4        2/3        1/2

                                  Light Loading
                                   -------------

<S>             <C>        <C>        <C>         <C>        <C>

 2               4,000      4,000      4,000       4,000      4,000

 6               4,000      4,000      4,000       4,000      4,000

10               4,000      4,000      4,000       4,000      4,000

20               4,000      6,000      6,000       6,000     10,000

30               6,000     10,000     10,000      10,000     12,000

40              10,000     10,000     10,000      12,000     16,000

50              10,000     10,000     16,000      16,000     20,000

60              12,000     16,000     16,000      16,000     20,000

70              16,000     16,000     20,000      20,000     26,000

80              16,000     20,000     20,000      26,000     30,000
</TABLE>


<PAGE>


                                      -50-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                  1989
- - --------------------------------------------------------------------------------

                                   Appendix D

                Recommended Maximum Number of Wires Which can be
               Supported by Poles of Various Classes Without
                Side Guys at Crossings over Railroad Tracks

        (For the Special Case Covered By Paragraph Q-10, See Appendix E)

<TABLE>
Class          Average of Crossing and Adjacent Spans - Feet
of
Pole       100          125          150        175          200

                             Heavy Loading District
                           ----------------------

<S>        <C>          <C>          <C>        <C>          <C>
1           28          22           18          15           13

2           22          18           14          12           11

3           17          14           11          10            8

4           13          11            9           8            7

5           10           8            7           6            5

6            8           6            5           4            4

7            6           5            4           3            3

<CAPTION>
Class          Average of Crossing and Adjacent Spans - Feet
of
Pole       100          125          150        175          200

                             Medium Loading District
                           -----------------------

<S>        <C>          <C>          <C>        <C>          <C>
 1          53          41           33          28           24

 2          41          32           26          22           19

 3          32          25           21          17           15

 4          24          19           16          14           12

 5          18          15           12          10            9

 6          14          11            9           8            7

 7          10           8            7           6            5
</TABLE>

<PAGE>
                                      -51-
                        Association of American Railroads
                              Communications Manual
1989                                                                 Part 1-B-1
- - -------------------------------------------------------------------------------

                             Appendix D (Continued)


       (For the Special Case Covered By Paragraph Q-1O,  See Appendix E)

<TABLE>
<CAPTION>
Class     Average of Crossing and Adjacent Spans - Feet
 of
Pole        100      125         150      175      200

                      Light Loading District
                      ----------------------
<S>        <C>        <C>         <C>      <C>      <C>
1           --        82          65       54       46

2           81        61          49       41       35

3           58        45          37       31       27

4           42        33          27       23       20

5           29        23          19       15       14

6           19        15          13       11        9

7           10        10           8        7        6
</TABLE>




<PAGE>


                                      -52-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                  1989
- - --------------------------------------------------------------------------------

                                   Appendix E
                Recommended Maximum Number of Wires Which can be
                 Supported by Poles of Various Classes Without
                 Side Guys at Crossings Over Minor Tracks Under
                   the Conditions Specified in Paragraph Q-10

<TABLE>
<CAPTION>
Class              Average of Crossing and Adjacent Spans - Feet
 of
Pole            100       125       150         175        200
                             Heavy Loading District
                           ----------------------
<S>            <C>       <C>       <C>         <C>        <C>
1               62        48        39          33         28

2               48        38        31          26         23

3               38        29        24          20         18

4               29        23        19          16          9

5               22        17         9           8          7

6               16         9         8           7          6

7                8         7         6           5          4
</TABLE>


<TABLE>
<CAPTION>
Class              Average of Crossing and Adjacent Spans - Feet
 of
Pole            100       125       150         175        200

                             Medium Loading District
                           -----------------------
<S>            <C>       <C>       <C>         <C>        <C>
1               --        90        76          63         54

2               --        74        59          50         42

3               75        56        45          39         33

4               55        42        35          29         25

5               40        32        26          22         19

6               20        20        20          17          9

7               10        10        10           8          7
</TABLE>


<PAGE>




                                      -53-
                        Association of American Railroads
                              Communication Manual
1989                                                                  Part 1-B-1
- - --------------------------------------------------------------------------------

                             Appendix E (Continued)



<TABLE>
<CAPTION>
Class            Average of Crossing and Adjacent Spans - Feet
 of
Pole            100       125       150         175        200

                             Light Loading District
                          -----------------------
<S>            <C>       <C>       <C>         <C>        <C>
1              --        --        --           81         68

2              --        --        75           61         52

3              --        70        55           46         39

4              65        50        40           34         30

5              45        35        29           24         21

6              31        25        20           17         15

7              10        10        10           10         10
</TABLE>



<PAGE>




                                      -54-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                  1989
- - --------------------------------------------------------------------------------

                                   Appendix F
                Recommended Maximum Number of Wires Which can be
             Supported by Poles of Various Classes Without Head Guys
<TABLE>
<CAPTION>
                                   Ultimate                       Class of Pole
    Wire              Diameter     Strength
Gage & Material       (Inches)     (Pounds)       1      2      3      4      5     6      7

                                                           Heavy Loading District
                                                           ----------------------
<S>                    <C>          <C>          <C>    <C>    <C>    <C>    <C>   <C>    <C>
10 AWG Copper          0.102          530         11     9      7      6      4     3      2

 9 AWG Copper          0.114          660          8     7      6      4      3     3      2

 8 AWG Copper          0.128          826          7     5      4      4      3     2      1

 8 BWG Copper          0.165        1,325          4     3      3      2      2     1      1

10 BWG Steel           0.134        1,200          4     4      3      2      2     1      1

 8 BWG Steel           0.165        1,710          3     2      2      2      1     1      0
</TABLE>



<TABLE>
<CAPTION>
                                   Ultimate                       Class of Pole
    Wire              Diameter     Strength
Gage & Material       (Inches)     (Pounds)       1      2      3      4      5     6      7

                                                           Medium Loading District
                                                           -----------------------
<S>                    <C>          <C>          <C>    <C>    <C>    <C>  <C>    <C>    <C>
10 AWG Copper          0.102          530         16     13     11    8     6       5     4

 9 AWG Copper          0.114          660         13     11      9    6     5       4     3

 8 AWG copper          0.128          826         10      8      7    5     4       3     2

 8 BWG Copper          0.165        1,325          5      5      4    3     3       2     1

10 BWG Steel           0.134        1,200          7      6      5    4     4       2     1

 8 BWG Steel           0.165        1,700          5      4      3    2     2       2     1
</TABLE>


    Where wires of other sizes or having  other  ultimate  strengths,  as in the
case of various grades of steel, are used, the number of wires can be determined
by  selecting  the wire in the table which has the nearest to the same  ultimate
strength as the wire under consideration.



<PAGE>

                                      -55-
                        Association of American Railroads
                              Communication Manual
1989                                                                  Part 1-B-1
- - --------------------------------------------------------------------------------

                             Appendix F (Continued)

<TABLE>
<CAPTION>
                                   Ultimate                       Class of Pole
    Wire              Diameter     Strength
Gage & Material       (Inches)     (Pounds)       1      2      3      4      5     6      7

                                                            Light Loading District
                                                            ----------------------
<S>                    <C>       <C>             <C>    <C>    <C>    <C>    <C>   <C>    <C>
10 AWG Copper          0.102        530           24     21     16     13     10    8      6

 9 AWG Copper          0.114        660           20     16     13     10      8    7      5

 8 AWG Copper          0.128        826           16     13     10      8      6    5      4

 8 BWG Copper          0.165      1,325           10      8      6      5      4    3      2

10 BWG Steel           0.134      1,200           10      8      7      5      4    3      2

 8 BWG Steel           0.165      1,710            7      6      5      4      3    2      2
</TABLE>

     Where wires of other sizes or having other  ultimate  strengths,  as in the
case of various grades of steel, are used, the number of wires can be determined
by  selecting  the wire in the table which has the nearest to the same  ultimate
strength as the wire under consideration.
<PAGE>
                                      -56-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                  1989
- - --------------------------------------------------------------------------------



                                   Appendix G
       Recommended Ground Line Circumference of Poles of Various Classes
                     and Species which have Deteriorated to
                       Two-Thirds their Strength when New

   Northern White Cedar and Other Species of Poles Having A Fiber Strength of
         3,600 Pounds per Square Inch. (See Group No. 1 in Appendix H)


<TABLE>
<CAPTION>
Length                                                              Class of Pole
of Pole           1               2                 3                  4                    5                6                7
Feet                                                    Ground Line Circumference - Inches

<S>            <C>              <C>               <C>               <C>                    <C>            <C>               <C>
20             34-1/2           32-1/2            30-1/2            28-1/2                 26-1/2          24-1/2            22-1/2

25             38               35-1/2            33-1/2            30-1/2                 29              27                25

30             41-1/2           38-1/2            36                33-1/2                 31              28-1/2            27

35             44               41                38-1/2            35-1/2                 33              30                28

40             46-1/2           43-1/2            40-1/2            37-1/2                 35              32-1/2            ------

45             48-1/2           45-1/2            42-1/2            39-1/2                 36-1/2          ------            ------

50             50-1/2           47-1/2            44-1/2            41                     38              ------            ------

55             52-1/2           49                46                42-1/2                 39-1/2          ------            ------

60             54               51                47-1/2            44                     40-1/2          -------           ------
</TABLE>


<PAGE>
                                      -57-
                        Association of American Railroads
                              Communications Manual
1989                                                                 Part 1-B-1
- - -------------------------------------------------------------------------------


                             Appendix G (Continued)

   Western Red Cedar and Other Species of Poles Having a Fiber Strength of
         5,600 Pounds per Square Inch. (See Group No. 2 in Appendix H)


<TABLE>
<CAPTION>
Length                                                          Class of Pole
of Pole       1                 2                 3                   4                      5               6                7
Feet                                                 Ground Line Circumference - Inches

<S>          <C>                <C>               <C>               <C>                    <C>               <C>           <C>
20           30                 28                26-1/2            24-1/2                 22-1/2            21            19-1/2

25           32-1/2             31                29                26-1/2                 25                23            21-1/2

30           35-1/2             33-1/2            31                28-1/2                 26-1/2            25            23-1/2

35           37-1/2             35-1/2            33-1/2            30-1/2                 28-1/2            26-1/2        24-1/2

40           40                 37-1/2            35                32-1/2                 30-1/2            27-1/2        ------

45           42                 39                37                34                     31-1/2            ------        ------

50           43-1/2             41                38-1/2            35                     32-1/2            ------        ------

55           45-1/2             42-1/2            39-1/2            37                     34                ------        ------

60           46-1/2             43-1/2            41                38                     -------           -------       ------

65           48-1/2             45                42                39-1/2                 -------           -------       ------

70           50                 46-1/2            43-1/2            40-1/2                 -------           -------       ------

75           50-1/2             47-1/2            44-1/2            41-1/2                 -------           -------       ------

80           52                 48-1/2            45-1/2            42                     -------           -------       ------

85           53                 49-1/2            46-1/2            -------                -------           -------       ------

90           56                 52-1/2            47-1/2            -------                -------           -------       ------
</TABLE>






<PAGE>


                                      -58-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                  1989
- - --------------------------------------------------------------------------------


                             Appendix G (Continued)
      Recommended Ground Line Circumference of Poles of Various Classes
                    and Species which have Deteriorated to
                       Two-Thirds their Strength when New

        Chestnut Poles - Fiber Strength, 6,000 Pounds per Square Inch

<TABLE>
<CAPTION>
Length                                                         Class of Pole
of Pole       1                 2                 3                  4                     5                  6            7
Feet                                                  Ground Line Circumference - Inches

<S>          <C>                <C>               <C>               <C>                    <C>               <C>           <C>
20           29                 27-1/2            25-1/2            24                     22                20-1/2        19-1/2

25           32-1/2             30-1/2            28-1/2            26                     24-1/2            22-1/2        21

30           34-1/2             32-1/2            30-1/2            28-1/2                 26                24            22-1/2

35           37                 34-1/2            32-1/2            30-1/2                 28                25-1/2        24-1/2

40           39                 36-1/2            34-1/2            31-1/2                 29-1/2            27            25-1/2

45           41                 38-1/2            36                33-1/2                 31                28-1/2        26-1/2

50           42-1/2             40                37-1/2            34-1/2                 32-1/2            30            27-1/2

55           44                 41-1/2            38-1/2            36                     33-1/2            30-1/2        ------

60           45-1/2             43                40                37                     -------           -------       ------

65           47                 44                41                38-1/2                 -------           -------       ------

70           48                 45-1/2            -------           -------                -------           -------       ------
</TABLE>


<PAGE>
                                      -59-
                        Association of American Railroads
                              Communications Manual
1989                                                                 Part 1-B-1
- - -------------------------------------------------------------------------------

                             Appendix G (Continued)

        Lodgepole Pine - Fiber Strength of 6,600 Pounds per Square Inch


<TABLE>
<CAPTION>
Length                                                           Class of Pole
of Pole          1                 2                 3                4                    5                  6            7
Feet                                                         Ground Line Circumference - Inches

<S>          <C>                <C>               <C>               <C>                    <C>               <C>           <C>
20           28-1/2             26-1/2            25                23                     21-1/2            20            19

25           31-1/2             29-1/2            27-1/2            25                     24                21-1/2        20-1/2

30           33-1/2             31-1/2            29-1/2            27-1/2                 25-1/2            23-1/2        22

35           35-1/2             33-1/2            31-1/2            29-1/2                 27                24-1/2        23-1/2

40           38                 35-1/2            33-1/2            30-1/2                 28-1/2            26-1/2        24-1/2

45           39-1/2             37                35                32-1/2                 30                27-1/2        25-1/2

50           41-1/2             38-1/2            36-1/2            33-1/2                 31-1/2            29            27

55           42-1/2             40                37-1/2            35                     32-1/2            30            ------

60           44                 41-1/2            39                36                     33                30-1/2        ------

65           45-1/2             42-1/2            40                37                     34-1/2            -------       ------

70           47                 43-1/2            41                38                     35-1/2            -------       ------

75           48                 45                42                39                     -------           -------       ------

80           49                 46                43                40                     -------           -------       ------

85           50-1/2             47                44                -------                -------           -------       ------

90           53                 49-1/2            45                -------                -------           -------       ------
</TABLE>


<PAGE>


                                      -60-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                  1989
- - --------------------------------------------------------------------------------


                                   Appendix G (Continued)
       Recommended Ground Line Circumference of Poles of Various Classes
                     and Species which have Deteriorated to
                       Two-Thirds their Strength when New

  Southern Pine, Douglas Fir and Other Species of Poles Having a Fiber Strength
        of 7,400 Pounds per Square Inch. (See Group No. 5 in Appendix H)

<TABLE>
<CAPTION>
Length                                                          Class of Pole
of Pole        1                 2                 3                  4                   5                  6            7
Feet                                                 Ground Line Circumference - Inches

<S>          <C>                <C>               <C>               <C>                    <C>               <C>           <C>
20           27-1/2             25-1/2            24                22-1/2                 20-1/2            19            18

25           30                 28                26-1/2            24                     23                21            19-1/2

30           32-1/2             30-1/2            28-1/2            26-1/2                 24-1/2            22-1/2        21

35           34-1/2             32                30-1/2            28-1/2                 26                24-1/2        22-1/2

40           36-1/2             34                32                29-1/2                 27-1/2            25-1/2        24

45           38-1/2             35-1/2            33-1/2            31                     29                26-1/2        25

50           40                 37                35                32-1/2                 30                28            26

55           41-1/2             39                36                33-1/2                 31                29            ------

60           42-1/2             40                37-1/2            35                     32                29-1/2        ------

65           44                 41                38-1/2            35-1/2                 ------            -------       ------

70           45                 42                39-1/2            36-1/2                 ------            -------       ------

75           46-1/2             43                40-1/2            ------                 -------           -------       ------

80           47                 44                41-1/2            ------                 -------           -------       ------

85           48                 45                ------            -------                -------           -------       ------

90           51                 48                ------            -------                -------           -------       ------
</TABLE>


<PAGE>
                                      -61-
                        Association of American Railroads
                              Communication Manual

1989                                                                  Part 1-B-1
- - --------------------------------------------------------------------------------

                                   Appendix H
             Recommended Ultimate Fiber Stress (Modulus of Rupture)
                        of Various Species of Wood Poles

<TABLE>
<CAPTION>
       Group No. 1                                  (Pounds per Square Inch)
       -----------
<S>                                                          <C>
       *Northern White Cedar                                  3,600
       Eastern White Cedar                                    3,600
       Red Wood                                               3,600

       Group No. 2
       -----------
       *Western Red Cedar                                     5,600
       Southern Red Cedar                                     5,600
       Washington Cedar                                       5,600
       Idaho Cedar                                            5,600
       Port Oxford Cedar                                      5,600
       Cypress                                                5,000

       Group No. 3
       -----------
       *Chestnut                                              6,000

       Group No. 4
       -----------
       *Lodgepole Pine                                        6,600

       Group No. 5
       -----------
       *Douglas Fir                                           7,400
       *Southern Pine, creosoted                              7,400
</TABLE>

   *American National Standards Institute (ANSI)
Standard 05.1-1987 (Specifications & Dimensions
of Wood Poles




<PAGE>

                                      -62-
                        Association of American Railroads
                              Communication Manual


Part 1-B-1                                                                 1989
- - -------------------------------------------------------------------------------

                                   Appendix J
           Recommended  Dimensions for New Poles of Various Species as Specified
           in ANSI Specifications 05.1 to 05.6, inclusive,
                  of the American National Standards Institute

                              Northern White Cedar

                 Fiber Strength, 3,600 Pounds per Square Inch.
                               From ANSI 05.1-1979

<TABLE>
<S>                           <C>      <C>       <C>       <C>        <C>        <C>        <C>
Class of Pole                  1        2         3         4          5          6          7
Minimum Top
Circumference (Inches)         27       25        23        21         19         17         15
</TABLE>

<TABLE>
<CAPTION>
Length    Ground
of        Line Distance                  Minimum Circumference at Six Feet from Butt
Pole      from Butt                                       (inches)
Feet      Feet
<S>      <C>                <C>        <C>       <C>       <C>       <C>         <C>        <C>
16        3-l/2              ----       ----      ----      ----       26.0       24.0       22.0

18        3-1/2              ----       ----      32.5      30.0       28.0       25.5       23.5

20        4                  39.5       37.0      34.0      31.5       29.0       27.0       25.0

22        4                  41.0       38.5      36.0      33.0       30.5       28.0       26.0

25        5                  43.5       41.0      38.0      35.5       32.5       30.0       28.0

30        5-1/2              47.5       44.5      41.5      38.5       35.5       33.0       30.5

35        6                  50.5       47.5      44.0      41.0       38.0       35.0       32.5

40        6                  53.5       50.0      46.5      43.5       40.0       37.0       ----

45        6-1/2              56.0       52.5      49.0      45.5       42.0       ----       ----

50        7                  58.5       55.0      51.5      47.5       44.0       ----       ----

55        7-1/2              61.0       57.5      53.5      49.5       46.0       ----       ----

60        8                  63.5       59.5      55.5      51.5       ----       ----       ----
</TABLE>



<PAGE>
                                      -63-
                        Association of American Railroads
                              Communication Manual

1989                                                                  Part 1-B-1
- - --------------------------------------------------------------------------------

                             Appendix J (Continued)


                               Western Red Cedar
                 Fiber Strength, 5,600 Pounds per Square Inch.
                               From ANSI 05.1-1979

<TABLE>
<S>                        <C>      <C>       <C>       <C>        <C>        <C>        <C>
Class of Pole               1        2         3         4          5          6          7
Minimum Top
Circumference (Inches)      27       25        23        21         19         17         15
</TABLE>

<TABLE>
<CAPTION>
Length    Ground
of        Line Distance               Minimum Circumference at Six Feet from Butt
Pole      from Butt                                    (Inches)
Feet      Feet
<S>      <C>               <C>      <C>       <C>       <C>        <C>        <C>        <C>
16        3-1/2             ----     ----      ----      ----       23.0       21.5       19.5

18        3-1/2             ----     ----      28.5      26.5       24.5       22.5       21.0

20        4                 34.5     32.0      30.0      28.0       25.5       23.5       22.0

22        4                 36.0     33.5      31.5      29.0       27.0       25.0       23.0

25        5                 38.0     35.5      33.0      30.5       28.5       26.0       24.5

30        5-1/2             41.0     38.5      35.5      33.0       30.5       28.5       26.5

35        6                 43.5     41.0      38.0      35.5       32.5       30.5       28.0

40        6                 46.0     43.5      40.5      37.5       34.5       32.0       ----

45        6-1/2             48.5     45.5      42.5      39.5       36.5       ----       ----

50        7                 50.5     47.5      44.5      41.0       38.0       ----       ----

55        7-1/2             52.5     49.5      46.0      42.5       39.5       ----       ----

60        8                 54.5     51.0      47.5      44.0       ----       ----       ----

65        8-1/2             56.0     52.5      49.0      45.5       ----       ----       ----

70        9                 57.5     54.0      50.5      47.0       ----       ----       ----

75        9-1/2             59.5     55.5      52.0      48.5       ----       ----       ----

80        10                61.0     57.0      53.5      49.5       ----       ----       ----

85        10-1/2            62.5     58.5      54.5      ----       ----       ----       ----

90        11                63.5     60.0      56.0      ----       ----       ----       ----
</TABLE>

<PAGE>
                                      -64-

                        Association of American Railroads
                              Communication Manual
 Part 1-B-1                                                                1989
- - --------------------------------------------------------------------------------

                             Appendix J (Continued)

           Recommended Dimensions for New Poles of Various Species as
            Specified in ANSI Specifications 05.1 to 05.6. inclusive,
                  of the American National Standards Institute

                                    Chestnut

                  Fiber Strength, 6,000 Pounds per Square Inch.
                               From ANSI 05.1-1979
<TABLE>
<CAPTION>

<S>                                      <C>       <C>        <C>        <C>        <C>        <C>       <C>
      Class of Pole                        1          2          3          4          5         6          7
      Minimum Top
      Circumference (inches)              27         25         23         21         19        17         15

</TABLE>

<TABLE>
<CAPTION>

      Length          Ground
      of              Line Distance             Minimum Circumference at Six Feet from Butt
      Pole            from Butt                                  (inches)
      Feet            Feet

     <S>              <C>                <C>        <C>       <C>        <C>       <C>       <C>         <C>
      16              3-1/2               -----      -----      -----      -----      22.5      21.0       19.5

      18              3-1/2               -----      -----      28.0       26         24.0      22.0       20.5

      20              4                   33.5       31.5       29.5       27.0       25.0      23.0       21.5

      22              4                   35.0       33.0       30.5       28.5       26.5      24.5       22.5

      25              5                   37.0       34.5       32.5       30.0       28.0      25.5       24.0

      30              5-1/2               40.0       37.5       35.0       32.5       30.0      28.0       26.0

      35              6                   42.5       40.0       37.5       34.5       32.0      30.0       27.5

      40              6                   45.0       42.5       39.5       36.5       34.0      31.5       29.5

      45              6-1/2               47.5       44.5       41.5       38.5       36.0      33.0       31.0

      50              7                   49.5       46.5       43.5       40.0       37.5      34.5       32.0

      55              7-1/2               51.5       48.5       45.0       42.0       39.0      36.0      -----

      60              8                   53.5       50.0       46.5       43.5      -----     -----      -----

      65              8-1/2               55.0       51.5       48.0       45.0      -----     -----      -----

      70              9                   56.5       53.0      -----      -----      -----     -----      -----

</TABLE>

<PAGE>

                                      -65-
                        Association of American Railroads
                              Communication Manual

1989                                                                  Part 1-B-1
- - --------------------------------------------------------------------------------
                             Appendix J (Continued)

                                 Lodgepole Pine

                 Fiber Strength, 6,600 Pounds per Square Inch
                               From ANSI 05.1-1979
<TABLE>
<CAPTION>

<S>                                 <C>       <C>       <C>    <C>      <C>       <C>   <C>
      Class of Pole                 1         2         3      4        5         6     7
      Minimum Top
      Circumference (Inches)        27        25        23     21       19        17    15

</TABLE>


<TABLE>
<CAPTION>

      Length       Ground
      of           Line Distance              Minimum Circumference at Six Feet from Butt
      Pole         from Butt                                    (inches)
      Feet         Feet

      <S>         <C>         <C>          <C>        <C>          <C>        <C>       <C>      <C>
      16           3-1/2       -----        -----       -----       -----      22.0      20.5     19.0

      18           3-1/2       -----        -----        27.5        25.5      23.5      21.5     20.0

      20           4            32.5         30.5        28.5        26.5      24.5      22.5     21.0

      22           4            34.0         32.0        30.0        27.5      25.5      23.5     22.0

      25           5            36.0         33.5        31.0        29.0      27.0      25.0     23.0

      30           5-1/2        39.0         36.5        34.0        31.5      29.0      27.0     25.0

      35           6            41.5         38.5        36.0        33.5      31.0      28.5     26.5

      40           6            44.0         41.0        38.0        35.5      33.0      30.5     28.0

      45           6-1/2        46.0         43.0        40.0      . 37.0      34.5      32.0     29.5

      50           7            48.0         45.0        42.0        39.0      36.0      33.5     31.0

      55           7-1/2        49.5         46.5        43.5        40.5      37.5      34.5     -----

      60           8            51.5         48.0        45.0        42.0      38.5      -----    -----

      65           8-1/2        53.0         49.5        46.0        43.0      -----     -----    -----

      70           9            54.5         51.0        47.5        -----     -----     -----    -----

      75           9-1/2        56.0         52.5       -----        -----     -----     -----    -----

</TABLE>


<PAGE>





                                      -66-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                 1989
- - --------------------------------------------------------------------------------
                             Appendix J (Continued)

           Recommended  Dimensions for New Poles of Various Species as Specified
           in ANSI Specifications 05.1 to 05.6, inclusive,
                  of the American National Standards Institute

             Southern Pine (Creosoted) and Douglas Fir (Creosoted)

                  Fiber Strength, 7,400 Pounds per Square inch.
                               From ANSI 05.1-1979
<TABLE>
<CAPTION>

<S>                                       <C>    <C>   <C>   <C>   <C>   <C> <C>
Class of Pole                             1      2     3     4     5     6   7
Minimum Top
Circumference (inches)                    27     25    23    21    19    17  15

</TABLE>


<TABLE>
<CAPTION>

     Length        Ground
     of            Line Distance                        Minimum Circumference at Six Feet from Butt
     Pole          from Butt                                              (inches)
     Feet          Feet

     <S>          <C>                  <C>               <C>        <C>              <C>          <C>        <C>        <C>
     16            3-1/2                -----             -----      ------            -----      21.5       19.5       18.0

     18            3-1/2                -----             -----       26.5             24.5       22.5       21.0       19.0

     20            4                    31.5              29.5        27.5             25.5       23.5       22.0       20.0

     22            4                    33.0              31.0        29.0             26.5       24.5       23.0       21.0

     25            5                    34.5              32.5        30.0             28.0       26.0       24.0       22.0

     30            5-1/2                37.5              35.0        32.5             30.0       28.0       26.0       24.0

     35            6                    40.0              37.5        35.0             32.0       30.0       27.5       25.5

     40            6                    42.0              39.5        37.0             34.0       31.5       29.0       27.0

     45            6-1/2                44.0              41.5        38.5             36.0       33.0       30.5       28.5

     50            7                    46.0              43.0        40.0             37.5       34.5       32.0       29.5

     55            7-1/2                47.5              44.5        41.5             39.0       36.0       33.5       -----

     60            8                    49.5              46.0        43.0             40.0       37.0       34.5       -----

     65            8-1/2                51.0              47.5        44.5             41.5       38.5       -----      -----

     70            9                    52.5              49.0        46.0             42.5       39.5       -----      -----

     75            9-1/2                54.0              50.5        47.0             44.0        -----     -----      -----

     80            10                   55.0              51.5        48.5             45.0        -----     -----      -----

     85            10-1/2               56.5              53.0        49.5            -----        -----     -----      -----

     90            11                   57.5              54.0        50.5            -----        -----     -----      -----


</TABLE>
<PAGE>

                                      -67-
                        Association of American Railroads
                              Communication Manual

1989                                                                 Part 1-B-1
- - -------------------------------------------------------------------------------

                                   Appendix K
Here  is an  example  of  computation  of  clearance  between  power  wires  and
communication  wires where an  open-wire  communication  line  crosses  over the
tracks of a railroad and under an open-wire power line in the same span.

Assume the case in which the power line carries a single-phase, two-wire circuit
of 6,900 volts between wires, the wires attached to pin-type  insulators on wood
crossarms  and that each wire  consists of two  strands of solid  copper and one
strand of  copper-covered  steel,  the  overall  diameter  of which is 0.230 in.
Assume also that the crossing is located in the heavy loading  district and that
the length of the power line span concerned is 255 ft. The method of determining
the  required   clearance   between  the  lowest  power  wire  and  the  highest
communication wire consists of the following steps:

1.      Referring to Table E-2; the power line takes the  classification of open
        supply wires, 750 to 8,700 volts and the basic clearance is,  therefore,
        4 ft.

2.      Referring to Paragraph E-6(a); since the crossing is located in the
        heavy loading district, and the power line span exceeds 175 ft. in
        length, an increase in clearance is required. Referring to the second
        table in Subparagraph (1) of Paragraph E-6(a), the wire used in this
        example takes the classification of a "small conductor" since it is
        stranded, is other than all-copper and has an overall diameter less than
        0.275 in. Referring now to the first table in this same subparagraph, it
        will be seen that the amount of clearance increase for a "small
        conductor" in the heavy loading district is 0.30 ft. for each 10 ft. by
        which the span length exceeds 175 ft. The span length of 255 ft. exceeds
        175 ft. by 80 ft., so that the clearance increase is 8 multiplied by
        0.30 ft., or 2.4 ft. The total clearance is, therefore, the sum of 4 and
        2.4, or 6.4 ft.

3.      This clearance is applicable if the communication line crosses under
        the power line at or near the middle of the power line span where the
        sags of the power wires will be greatest when they are loaded with ice.
        Since the increased sag of the power wires caused by ice loading is less
        near the power poles than at mid-span, the clearance need not be as
        great as 6.4 ft. if the point where the communication line crosses under
        the power line (crossing point) is other than at the middle of the power
        line span. To take account of this permissible decrease, another step is
        necessary.


<PAGE>

                                      -68-
                        Association of American Railroads
                              Communication Manual

Part 1-B-1                                                                 1989
- - -------------------------------------------------------------------------------

4.       Referring to Table E-4; assume that the distance from the nearest
         power pole to the center line of the communication line is 51 ft. or
         20% of the length of the power line span. The corresponding reduction
         factor given in the table for a basic clearance of 4 ft. is 0.71.
         Multiplying this by 6.4 gives a net clearance of 4.5 ft. which is the
         clearance that should be provided under the conditions assumed. If
         this clearance had been less than 4 ft., the basic clearance of 4 ft.
         should have been provided in accordance with the requirements of
         Subparagraph (2) of Paragraph E-6 (a).

5.       The above assumes that the supply wires cross over the communication
         wires at a distance of more than 6 ft. horizontally from the nearest
         communication line pole. In accordance with Note (e) of Table E-2, if
         this horizontal distance is less than 6 ft., the basic clearance used
         in the above computations should be 6 ft. and the clearance under the
         conditions assumed above would be 8.4 ft. at mid-span or 6.6 ft. at
         the 20% point.

6.       The above takes care of the clearance increase required by Paragraph
         E-6 (a). The next step is to determine the further increase required by
         the voltage of the power circuit as given in Paragraph E-6 (b). In the
         case assumed, since the voltage is less than 50,000 volts, no increase
         is required and the clearance as determined in Step (d) or (e) above
         would meet the combined requirements of Paragraphs E-6 (a) and E-6(b).
         Had the voltage been 69,000 instead of 6,900 volts, the basic clearance
         from Table E-2 would have been 6 ft., the clearance due to span length
         would have been that determined in Step (e) above to which would be
         added 1/2 in. for each 1,000 volts that the voltage exceeds 50,000
         volts. This increase would amount to 9-1/2 in., or 0.8 ft., and the
         total clearance would have been 9.2 ft. at mid-span, or 7.4 ft. at the
         20% point.

7.       The final factor which enters into the determination of the clearance
         is the method of support of the power conductors as given in Paragraph
         E-6(c). The object of this clearance increase is to insure that a total
         clearance is provided such that at least the basic clearance called for
         in Table E-2 will be maintained in the event that the power conductor
         is broken in the span adjacent to the crossing in those situations
         where the conductor is more or less rigidly supported at one crossing
         structure and at the other crossing structure is supported by
         suspension or other type insulators which are free to swing and thereby
         permit a large increase in the sag of the power wire in the crossing
         span. Where the power conductor is supported by pin-type insulators at
         both crossing structures, as assumed


<PAGE>

                                      -69-
                        Association of American Railroads
                              Communication Manual

1989                                                                 Part 1-B-1
- - -------------------------------------------------------------------------------

         in the  example in this  appendix,  this  effect is not  present and no
         increase in clearance is required for this item.  The same result would
         have obtained had the power conductor been supported by suspension-type
         insulators at both crossing  structures.  This effect is important only
         where the method of  supporting  the power  conductor is such as not to
         permit the same  freedom of movement of the  conductor  at one crossing
         structure  as at the other.  The  determination  of the increase in sag
         which would  result from such  dissimilar  supporting  arrangements  is
         complicated and since it is a type of construction which will rarely be
         encountered where this specification is involved,  it will generally be
         found  preferable to obtain the  information  from the engineers of the
         company owning the power line rather than attempt to compute it.
<PAGE>

                                      -70-
                        Association of American Railroads
                              Communication Manual

Part 1-B-1                                                                  1989
- - --------------------------------------------------------------------------------

                                   Appendix L
           Recommended Typical Communication Line Crossing Data Sheet

     A data sheet of the type illustrated below shall be filled out by the party
planning to erect wires across the railroad and forwarded to the  Superintendent
of Communications or other designated officer,  together with the plan and other
pertinent information, as a part of the notice required by Paragraph C-1.

Name of party desiring crossing...............................................
Location of proposed crossing.................................................

 1. Poles - Kind of timber - Treated or untreated.............................
 2. Poles - Class and length..................................................
 3. Poles - Depth of setting..................................................
 4. Poles - Poles - Setting - Kind of earth, i.e., rock, firm
    earth or swampy ground....................................................
 5. Guys, Side - Number, kind and size........................................
 6. Guys, Side - Nominal breaking strength....................................
 7. Guys, Head - Number, kind and size........................................
 8. Guys, Head - Nominal breaking strength....................................
 9. Guy Clamps - Kind and size................................................
10. Guy Clamps - Number at pole end...........................................
11. Guy Clamps - Number at guy rod end........................................
12. Guy Rods - Kind and size..................................................
13. Anchors - Kind and size...................................................
14. Anchors - Depth of setting................................................
15. Crossarms - Number, immediate construction................................
16. Crossarms - Number, future construction...................................
17. Crossarms - Material......................................................
18. Crossarms - Size..........................................................
19. Crossarms - Number of pins per arm........................................
20. Pins - Material...........................................................
21. Pins - Type...............................................................
22. Pins - Size...............................................................
23. Pins - If metal, state if galvanized......................................
24. Insulators - Material.....................................................
25. Insulators - Type.........................................................
26. Wires - Material and number...............................................
27. Wires - Size and gage.....................................................
28. Wires, supply, involved in crossing - Voltage.............................
29. Suspension Strand - Kind and size.........................................
30. Suspension Strand - Nominal breaking strength.............................
31. Suspension Strand Attachment - Kind and size of through
    bolt......................................................................
32. Suspension Strand Attachment - Type of suspension clamp...................




<PAGE>

                                      -71-
                        Association of American Railroads
                              Communication Manual

1989                                                                  Part 1-B-1
- - --------------------------------------------------------------------------------

33. Suspension Strand Attachment - Type of safety strap.........................
34. Suspension Strand Attachment - Kind and size of safety
    strap bolt..................................................................
35. Suspension Strand Attachment - Type of reinforcing links....................
36. Suspension Strand Attachment - Kind and size of reinforcing
    link bolts..................................................................
37. Cable, if any, diameter, inches.............................................
38. Cable, if any, weight, pounds, per foot.....................................
39. Cable Rings - Material......................................................
40. Cable Rings - Type..........................................................
41. Cable Rings - Spacing.......................................................
42. Cable Lashing Wires, Size...................................................
<PAGE>
                                      -72-
                        Association of American Railroads
                              Communications Manual

Part 1-B-1                                                                  1989
- - --------------------------------------------------------------------------------

Figure 1B1-1: Typical Drawing for Communication Lines Crossing over Railroads

        [COMMUNICATION LINES CROSSING OVER RAILROADS DIAGRAM]
<PAGE>
                                      -73-
                        Association of American Railroads
                              Communication Manual

1989                                                                  Part 1-B-1
- - --------------------------------------------------------------------------------

Figure 1B1-2: Guy Lead and Height and their Ratio

                         [GUY LEAD AND HEIGHT DIAGRAM]
<PAGE>
                                      -74-
                        Association of American Railroads
                              Communication Manual

Part 1-B-1                                                                  1989
- - --------------------------------------------------------------------------------

Figure 1B1-3: Typical Arrangement of Underground Crossing

                 [ARRANGEMENT OF UNDERGROUND CROSSING DIAGRAM]
<PAGE>
                                      -75-
                        Association of American Railroads
                              Communication Manual

1989                                                                  Part 1-B-1
- - --------------------------------------------------------------------------------

Figure 1B1-4:  Typical Drawing for Communication Line Crossing Under Bridges

              [COMMUNICATION LINE CROSSING UNDER BRIDGES DIAGRAM]
<PAGE>
                                      -76-
                        Association of American Railroads
                              Communication Manual
Part 1-B-1                                                                 1989
- - -------------------------------------------------------------------------------

Figure 1B1-5:  Typical Arrangement of Conduits for Underground Crossing

                  [CONDUITS FOR UNDERGROUND CROSSING DIAGRAM]
<PAGE>


                                    EXHIBIT G

                        SPECIFICATION FOR THE ATTACHMENT
                          OF CABLES TO RAILROAD BRIDGES

I.   AVOIDANCE OF ATTACHMENTS

     The cable system preferably should be so graded that it will be unnecessary
     to make attachments to railroad bridge structures.

II.  ATTACHMENTS TO FIXED BRIDGES

     Unless separate  written approval of the Railroad's Chief Engineer has been
     obtained,  cable will be encased in steel conduit, and attachments to steel
     bridges  shall be made with  devices  that do not require  the  drilling or
     cutting of the bridge  structure or the removal of rivets.  Attachments  to
     each individual  bridge shall be in accordance with drawings prepared by or
     for Utility and approved by the Railroad.  Typical attachment  drawings may
     be prepared for those types of bridges whose design and  construction  lend
     themselves  to repetition of  attachment  method and detail.  However,  the
     Railroad  shall make final  determination  as to the  applicability  of any
     typical attachment drawings to an individual bridge.

III. ATTACHMENTS TO MOVABLE BRIDGES

     All attachments to movable bridges require separate written approval of the
     Railroad's Chief Engineer and will be made in accordance with  requirements
     prescribed for that particular bridge by the Railroad.

IV.  TEMPORARY RELOCATION OF ATTACHMENTS

     Temporary  relocation  of cable  systems  attached to bridges  will be made
     promptly  and  without  cost to Railroad  when  necessary  for  Railroad to
     perform  bridge  maintenance.  Notification  will not be less  than 30 days
     prior  to  date  that  relocation  must  be  complete,  except  in  case of
     emergency.  The  attachment  requirements  set forth by the  Railroad  will
     locate the attachment,  to the extent possible, such that the occurrence of
     such temporary relocations will be minimized.

V.   NEW BRIDGES

     In the event that new  railroad  bridges  are to be  constructed  along the
     right-of-way  occupied by Utility  and Utility  desires to locate its cable
     facility on such bridges,  provision for Utility cable will be incorporated
     into the  bridge  design.  Costs of  design,  construction,  and  materials
     attributable solely to Utility's use of the structure,  as well as costs of
     any   temporary   relocation   of  Utility's   facilities   during   bridge
     construction, will be paid by Utility.



<PAGE>


                                    EXHIBIT H

                        EMERGENCY AND DISASTER RESPONSES

In the event of an  emergency  or  disaster  which  results in actual  damage to
Facilities or System or to Railroad's  facilities  or  operations,  or creates a
situation  wherein  it is  reasonably  possible  that  such  damage  may  occur,
immediate contact shall be established between Railroad's Operations Center, and
applicable  division  personnel,  and Utility's  Operation Center and applicable
Area  Representatives.  Detailed procedures  effectuating the above notification
shall be mutually established.

Railroad and Utility will fully  cooperate with each other and coordinate  their
efforts to jointly and severally  restore operation of their respective rail and
communication systems, with each being solely responsible for all costs incurred
in repairing its own facilities.  In the event such  cooperation  results in one
party  incurring  costs that are for the  benefit of the other  (e.g.,  Railroad
providing railroad equipment to Utility), such costs shall be subsequently fully
reimbursed.

Utility  will  maintain  emergency  material  and repair kits at various  points
throughout its System.

Railroad  shall have the right to establish  priorities for making repairs which
impact upon rail operations,  but shall permit Utility to move forward in making
repairs to Utility's  System or  Facilities  when to do so would not impair rail
operations.


<PAGE>
                                                                       EXHIBIT I



                                       CSX
                                 TRANSPORTATION


Specifications for crossings of wires or cables of Telegraph, Telephone, Signal,
        and other Circuits of Similar character over CSXT Rights of Way,
                 Tracks, or Lines of wires of the same classes.



1.  PURPOSE.

     The purpose of these specifications is to describe the general requirements
of construction and maintenance of  communication  lines crossing the tracks and
associated parallel communication lines of railroads. They are based on National
Electrical Safety Code and A.A.R.  communications section.  Specification 1 3 1.
For further details, see complete specifications.

     Wires covered by these  specifications  shall not carry more than 400 volts
to ground.

2.  DRAWINGS.

     Complete  drawings shall be furnished in duplicate  before  construction is
commenced.  These  drawings  shall  show the  general  plan of the right of way,
tracks and wires to be crossed  and the  construction  proposed,  including  the
locations of the poles  supporting the crossing span and the adjoining  spans on
either side of the crossing  span, the number,  kind and size of wires,  and the
proposed clearances of the existing tracks and wires.

3.  LOCATION OF POLES.

     Spans crossing railroad rights of way,  preferably should be supported upon
poles placed outside of the right of way.

     The crossing span shall, where practicable, not exceed 175 ft. in the heavy
loading  district,  250 ft. in the medium loading  district,  and 350 ft. in the
light loading district.  Where practicable,  the adjacent spans shall not exceed
the length of the  crossing by more than 50%.  Wherever  practicable,  the poles
supporting  the crossing span and the adjoining  span on each side thereof shall
be in a straight line.

4.  CLEARANCES.

     General.  The condition under which all clearances are specified are
60(degrees)F. and no wind. Clearances shall be measured between the nearest
parts of the objects concerned. The clearances required by this section shall
be maintained at not less than the specified values.

     Side  Clearance  From Rails.  Poles or towers  supporting the crossing span
shall,  where  practicable,  be so located  as to  provide a minimum  horizontal
clearance  of twelve (12) feet from the nearest  track rail (except at sidings a
clearance  of not  less  than  eight  (8)  feet may be  allowed)  and a  minimum
horizontal  clearance of eight (8) feet  between the nearest  track rail and any
crossarm, guy, or other attachments. Where it is impracticable or undesirable to
provide  these  clearances,  they  may be  reduced  if the  approval  of CSXT is
obtained.  Where necessary to provide safe operating  conditions,  which require
uninterrupted view along the tracks for signals,  signs, etc., the parties shall
cooperate to provide greater clearances than those specified above.

     Vertical  Clearance Above Rails for Fixed Supports.  The vertical clearance
between  the lowest  wire,  guy,  or cable and the top of rail shall not be less
than the Table below:

                         VERTICAL CLEARANCE ABOVE RAILS

<TABLE>
<CAPTION>
                                   Vertical Clearance
                                        in Feet
                                   ------------------

<S>                                       <C>
For wires                                  27

For guys or cables
  carried on suspension
  strands                                  25

</TABLE>

Vertical Clearances Between Wires Not on the Same Supporting Structures.

     The  vertical  clearances  between  conductors  of the  crossing  span  and
conductors  of  other  lines  shall be not less  than  the  values  shown in the
following Table.
<PAGE>
                   Minimum Vertical Clearance in Feet Between
                         Wires not on the same structure


     (All     voltages are between wires,  except where otherwise  stated or for
              trolley contact wires where voltages are to ground.)



<TABLE>
<CAPTION>
                                                            Nature of Wires at High Level

                                                                   Open supply of wires,
                                                                   0-750 volts, supply                                      Guys,
                                             Communication         cables, all voltages                                  span wires,
         Nature of                           wires, cables          having effectively             Open supply            lightning
       wires crossed                         and suspension        grounded metal sheath            wires and            protection
            over                                 strand            or suspension strand            service drops            wires

                                                                                                750 to     8,700 to
                                                                 Line wires        Service       8,700      50,000
                                                                 and cables         drops        Volts       Volts
<S>                                             <C>                 <C>             <C>          <C>        <C>              <C>

Communication
  wires, cables and
  suspension strand                               2                   4               2            4           6               2

Guys and span wires,
  lightning protection wires,
  supply service drops of
  0 to 750 volts                                  4                   2               2             2          4               2

</TABLE>




                               LOADING ASSUMPTIONS

     Three  degrees of severity are  recognized  on the Railroad for the loading
due to weather conditions and are designated,  respectively,  as Heavy,  Medium,
and Light Loading:

     (a)  Heavy Loading Territory:  All lines north of Virginia-North Carolina
          State Line.
     (b)  Medium Loading Territory:  All lines south of Virginia-North Carolina
          State Line and north of a parallel of latitude passing through
          Charleston, S.C., Fairfax, S.C., Woodbury, Ga, and LaGrange, Ga.
     (c)  Light Loading Territory:  All lines south of territory designated in
          (b) above.

5.  POLES

     Material.  Wood poles shall be of suitable and selected timber free from
observable defects that would decrease the strength of durability.

     Sizes.  Creosoted Southern Pine--Poles shall be of a size not less than the
class specified in Table for the corresponding  number of wires carried. If guys
are  omitted,  poles must be of  sufficient  strength  to meet the  requirements
specified in paragraph Q-9 of A.A.R. Specification 131.

                                  MINIMUM SIZES


<TABLE>
<CAPTION>
                                    Over 40 wires              21 to 40 wires           11 to 20 wires       10 wires or less
<S>                                 <C>                        <C>                     <C>                   <C>

Medium Loading Territory
Minimum top Cir. (in.)               21 (class 4)               19 (class 5)             17 (class 6)          15 (Class 7)
Light Loading Territory
Minimum Top Cir. (in.)               19 (class 5)               17 (class 6)             17 (class 6)          15 (Class 7)

</TABLE>

     Gains.  Gains shall not be cut to a depth of more than one-half inch.

     Setting.  Following Table specifies the minimum depth of setting for
unguyed poles in average soil and in rock.

                   MINIMUM DEPTH OF SETTING FOR UNGUYED POLES


<TABLE>
<CAPTION>
Length of       Depth in feet in average soil for different classes of poles     Depth in feet in
 pole in                                                                           Rock For all
   feet               Class 4          Class 5 and 6         Class 7                  classes
<S>                 <C>                  <C>                <C>                      <C>

    16                   --                4                  3 3/4                    3
    18                   --                4 1/4              4                        3 1/4
    20                 4 1/2               4 1/4              4                        3 1/4
    22                 4 3/4               4 1/2              4 1/4                    3 1/2
    25                 5 1/4               4 3/4              4 1/2                    3 3/4
    27                 5 1/2               5                  4 3/4                    4
    30                 5 3/4               5 1/4              5                        4 1/4
    35                 6                   5 1/2              5 1/4                    4 1/2
    40                 6 1/4               5 3/4              5 1/2                    4 3/4
    45                 6 1/2               6                  5 3/4                    5
    50                 6 3/4               6 1/4              6                        5 1/4
    55                 7                   6 1/2                --                     5 1/2
    60                 7 1/4               6 3/4                --                     5 3/4

</TABLE>

     Where soil  conditions  are such that the above  depths of setting will not
develop the strength of the pole,  the pole shall be set to an additional  depth
or other means used to properly secure the pole.

     Spliced Poles.  Spliced poles shall not be used to support the crossing
span.
<PAGE>
6.  CROSSARMS AND BRACKETS.

     Wood crossarms supporting the crossing span shall be of fir, treated yellow
pine or other suitable  timber.  They shall have a nominal  cross-section on not
less than the value given in Table below.

                          DIMENSIONS OF WOOD CROSSARMS


<TABLE>
<CAPTION>

 Number                    Nominal Length                  Nominal Cross-Section
of wires               (Feet)        (Inches)                    (Inches)
<S>                    <C>           <C>                    <C>
    2                     1            4 1/2                  2 5/16 by 3 5/16
    4                     3            4 1/2                  2 5/16 by 3 5/16
    6                     6            0                      2 3/4  by 3 3/4
   10                     8            6                      2 3/4  by 3 3/4
   10                    10            0                      3      by 4
   12*                   10            0                      3 1/4  by 4 1/4
   16**                  10            0                      3 1/4  by 4 1/4

</TABLE>

 * Where  crossarms  are bored  for 1/2 inch  steel  pine,  3 inch by 4 1/4 inch
   crossarms may be used.
** Permitted in medium and light loading districts only.

     Galvanized or painted iron or steel crossarms of strength equal to those of
the wood crossarms specified in above Table may be used.

     Double  crossarms shall be provided on crossing poles and shall be attached
to the pole by means of a 5/8 inch crossarm bolt.  Double  crossarms longer than
two-pin  shall be  equipped  with double  arming  bolts,  or spacing  blocks and
crossarm  bolts,  at a point near each end of the crossarms.  Each wire shall be
attached to each insulator of its pair upon the double arm.

     Wood pole  brackets  may only be used at  crossings  over minor  tracks and
shall be in duplicate so as to afford two points of support for each conductor.

7.  HARDWARE.

     All pole line hardware shall be galvanized.

8.  PINS.

     Insulator  pins shall have  strength  sufficient  to withstand the loads to
which they may be  subjected.  Steel or iron pins shall have a diameter of shank
not less than 1/2 inch.  Wood pins shall be sound and  straight  grained  with a
diameter of shank not less than 1 3/4 inches.

9.  INSULATORS.

     Each insulator  shall be of such pattern,  design and material  that,  when
mounted on its pin, it will withstand,  without injury, and without being pulled
off the pin, the ultimate strength of the conductor which it supports.

10.  CONDUCTORS.

     Conductors  shall be of material or combination of materials which will not
corrode excessively under the prevailing conditions.

     Conductors of material  other than those  specified in Table below shall be
of such size and so erected as to have mechanical strength not less than that of
the sizes of copper conductors specified.

     The  minimum  allowable  sizes  of  conductors  in a span  crossing  over a
railroad  which does not in the same span also cross over supply  conductors  in
excess of 750 volts to ground, shall be as given in following Table.

                               MINIMUM WIRE SIZES


<TABLE>
<CAPTION>
                                                                    Spans exceeding 125 feet up to
  Conductor                      Spans 125 feet or less                     150 feet (Note)

                               Gage          Diameter Inches          Gage        Diameter Inches
<S>                          <C>                <C>                 <C>              <C>
  Copper, Hard Drawn          10 AWG              0.102               9 AWG            0.114

  Steel Galvanized:
  In general                  10 BWG              0.134               8 BWG            0.165

  In rural districts
  or arid regions             12 BWG              0.109              10 BWG            0.134

</TABLE>

     NOTE:--If Spans in excess of 150 ft. are necessary,  the size of conductors
specified  above,  or the  sags  of the  conductors,  shall  be  correspondingly
increased.

11.  GUYS.

     Poles  supporting the crossing span shall be side guyed in both directions,
if  practicable,  and shall be head guyed away from the  crossing  span when the
construction  of the crossing span places undue stress on crossing  poles.  Guys
shall be of galvanized steel wire or stranded steel cable.
<PAGE>
12.  SUSPENSION STRAND.

     Material.  Suspension strands shall be of galvanized steel or other
material that will not corrode excessively under the prevailing conditions.

     Size. For spans of 150 feet or less, the following  Table gives the minimum
sizes of suspension  strand to be used for supporting  different sizes of aerial
cable.

                       MINIMUM SIZES OF SUSPENSION STRAND

<TABLE>
<CAPTION>

Weights of cable in                     Suspension Strand (Nominal Ultimate
 pounds per foot                                Strength in Pounds)
<S>                                                 <C>
Less than 2.25                                         6.000
2.25 to 5                                             10.000
Exceeding 5 and less than 8.5                         16.000

</TABLE>

13.  INSPECTION.

     The construction shall be subject to the inspection of the railroad company
and  shall  comply  with the  requirements  of these  specifications.  Defective
material shall be rejected and replaced with acceptable material.

14.  MAINTENANCE.

     The crossing shall be maintained in safe condition.  The poles,  crossarms,
insulators,  guys, wires, and other parts and materials used in the structure of
the crossing shall be periodically inspected,  and all defects shall be promptly
repaired by the owner of the line.  The guys and anchors  shall be maintained so
that the guys are kept taut and serve the purpose  for which they are  intended.
The line wires  shall be kept to the proper  sag.  Underbrush,  grass,  or other
inflammable material shall be kept removed by the crossing owner, from the poles
for a sufficient distance to reduce the fire hazard to the minimum.

<PAGE>

                                    EXHIBIT J

CSX TRANSPORTATION - EB2 PUBLICATION SCHEDULE OF LABOR OVERHEAD RATES USED FOR
BILLING OUTSIDE PARTIES OTHER THAN GOVERNMENT AGENCIES AND RAILROADS

ITEM 1. SUMMARY OF LABOR SURCHARGES TO BE APPLIED TO DIRECT LABOR EFFECTIVE
1/1/97:

<TABLE>
<CAPTION>
                                                                                                                          NON-
DESCRIPTION                            MOW              SIG            M OF E           TRANS           GOB/SS          CONTRACT
- - - -----------                            ----             ---            ------           -----           ------          --------
<S>                                <C>               <C>            <C>              <C>             <C>             <C>
Vacation and other                     8.35%            6.42%           7.59%           10.60%          12.82%            5.74%
Holiday                                3.97%            3.65%           3.87%            0.69%           3.46%            0.00%
RRUI                                  27.01%           26.48%          26.48%           24.76%          26.64%           18.46%
Suppl. Annuity Tax                     1.86%            1.64%           1.74%            1.60%           1.66%            0.00%
Suppl. Sick Ins.                       1.07%            0.88%           1.21%            0.00%           0.00%            0.00%
Health & Welfare                      16.13%           15.81%          16.01%           15.99%          16.70%            7.44%
Small tools                            2.00%            2.00%           0.00%            0.00%           0.00%            0.00%
Safety/Training                        4.00%            4.00%           4.00%            3.00%           0.00%            0.00%
Supervision                           67.10%           61.33%          32.23%           31.98%          19.32%            0.00%
Force Acct. Ins.                      23.00%           23.00%          23.00%           23.00%           0.00%            0.00%
Funded Pension                         0.00%            0.00%           0.00%            0.00%           0.00%            7.36%

Composite Rate                       154.49%          145.21%         116.13%          111.62%          80.60%           39.00%
</TABLE>

*  Other  included  sick  leave,   personal  leave,   jury  duty,   bereavement,
compassionate leave.

Note: The rates above do not include the surcharge of 24.6% for Signal Shop
Labor

<PAGE>

                                    EXHIBIT K

                 ARBITRATION OR MEDIATION RESOLUTION PROCEDURES

     A. In the event of any  controversy,  claim or dispute  between Utility and
Railroad  referred  to  arbitration  or  mediation  pursuant  to this  Agreement
(hereinafter  referred to as "Dispute"),  the parties agree to use the procedure
herein.

     B. The parties  agree that the only  circumstances  in which a Dispute will
not be subject to the  provisions of this Exhibit are: (i) where a party makes a
good  faith  determination  that a breach of the terms of the  Agreement  by the
other party will cause  irreparable  damage to the complaining party unless such
breach is enjoined by a court of competent jurisdiction; or (ii) where one party
has been  made a party  to a  judicial  proceeding,  and the  other  party is an
appropriate additional party to such proceeding. Breach of the Agreement will be
deemed to cause irreparable damage if it is incapable of adequate redress if not
promptly enjoined, so that a temporary or preliminary restraining order or other
immediate  injunctive  relief is the only adequate remedy.  If one party files a
pleading seeking injunctive relief, and such pleading is challenged by the other
party, and the injunctive  relief sought is not awarded in substantial part, the
party filing the pleading seeking immediate  injunctive relief shall pay all the
costs,  attorneys' fees and expenses of the party  successfully  challenging the
pleading.

          1.  Notice  of  Arbitration  or  Mediation.  If the  parties  have not
succeeded in  negotiating a resolution of a Dispute  within thirty (30) business
days  following  the  Trigger  Notice  (which  period may be  extended by mutual
agreement of the parties),  arbitration  or mediation  shall be conducted as set
forth below. The Trigger Notice shall specify in reasonable detail the nature of
the Dispute and comply with the procedures set forth in Paragraph 2 or Paragraph
3.

          2.  Arbitration   Procedures.   Arbitration   shall  be  conducted  in
accordance with the then-current  CPR  Non-Administered  Arbitration  Rules (the
"Rules").  The  provisions of the Agreement  shall control if they conflict with
the Rules.  Arbitration shall be before three (3) arbitrators.  Each party shall
appoint one (1)  arbitrator  within  fifteen (15)  business  days  following the
commencement  of the  procedure by Trigger  Notice  above  (which  period may be
extended by mutual agreement). Within fifteen (15) business days following their
appointment,  the two (2)  arbitrators  so  selected  shall  appoint  the  third
arbitrator,  who shall serve as Chairman of the arbitration  panel. The Chairman
shall be an  attorney  at law  admitted  to  practice  in the United  States and
experienced  in  arbitration.   The  arbitrators   shall  determine   issues  of
arbitrability  in  accordance  with federal  law,  but may not limit,  expand or
otherwise  modify the terms of the Agreement.  Arbitration  shall be governed by
the United States Arbitration Act, 9 U.S.C. Sections 1-16, and judgment upon the
award may be entered by any court having jurisdiction thereof. In addition,  the
following shall apply with respect to any arbitration conducted pursuant to this
Appendix:

             (a)  Costs/Fees.  If either party submits a matter to  arbitration,
     and  provided  that  one  of the  parties  prevails  over  the  other,  the
     arbitrators  may  award  such  prevailing  party  an  amount  equal  to its
     reasonable   attorneys'  fees  and  expenses,   experts'  fees,  and  other
     reasonable  costs and expenses that it has incurred in connection  with the
     arbitration.  Otherwise,  each party shall be responsible  for its own fees
     and expenses.

             (b) Remedies.  Upon a showing of material  breach of the Agreement,
     the  arbitrators  are  empowered to award actual or  compensatory  damages,
     unless prohibited by applicable state law or the Agreement. The arbitrators
     may not award  consequential,  punitive  or multiple  damages;  the parties
     expressly waiving any entitlement to such relief.

             (c) Location of Arbitration. The place of the arbitration shall be
     Jacksonville, Florida.

             (d)  Confidentiality.   The  parties,  their  representatives,  the
     arbitrators and any other  participants in the arbitration  shall treat all
     aspects of the  arbitration as  confidential,  including but not limited to
     all documents,  testimony,  information or other things produced, inspected
     or otherwise


                                        1
<PAGE>


     made available in connection with the arbitration.  Neither the parties nor
     the  arbitrators  may  disclose  the  existence,  content or results of the
     arbitration,   except  as  necessary  to  comply  with  applicable  law  or
     regulatory  requirements.  Before  making  any such  disclosure,  the party
     seeking  disclosure shall give written notice to the other party, and shall
     afford such party a reasonable opportunity to protect its interests.  In no
     event  shall a  disclosure  necessary  to comply  with legal or  regulatory
     requirements  be deemed to waive the  confidential  nature of the disclosed
     information.

             (e) Discovery.  The  arbitrators  shall permit and facilitate  such
     discovery in accordance with Federal Rules of Evidence and Federal Rules of
     Civil  Procedure,   as  they  shall  determine  is  appropriate  under  the
     circumstances,  taking into account the needs of the parties, the relevance
     of  the  requested   discovery  to  the  matter  in  controversy   and  the
     desirability  of  making  discovery  expeditious  and  cost-effective.  The
     parties  agree  that the  following  information  shall not be  subject  to
     discovery  in  connection  with  the  arbitration  unless  it is  expressly
     authorized by the  arbitrators  upon a showing of  substantial  need by the
     party seeking discovery:  (i) information relating to Railroad's agreements
     with any customers;  (ii) information relating to Utility's cost structure,
     contribution  or  profits  under  third  party  usages  allowed  under  the
     Agreement.

          3. Mediation  Procedures.  Mediation is a voluntary process in which a
neutral  third  party,   who  lacks  authority  to  impose  a  solution,   helps
participants  reach their own agreement for resolving a dispute or  transaction.
Utility and Railroad  agree to act in good faith  negotiation,  with the jointly
appointed mediator,  to reach an agreement,  utilizing the following basic roles
of the mediator in the Dispute resolution:

               - urging  participants  to agree to talk; - helping  participants
               understand the mediation  process;  - carrying  messages  between
               parties;  - helping  participants agree upon an agenda; - setting
               an agenda; - providing a suitable environment for negotiation;  -
               maintaining   order;  -  helping   participants   understand  the
               problem(s);  -  defusing  unrealistic  expectations;   -  helping
               participants develop their own proposals;  - helping participants
               negotiate;  -  persuading  participants  to  accept a  particular
               solution.

             (a) Mediation shall be held in Jacksonville, Florida.

             (b) Each party shall be responsible for its own attorney
     fees, and costs (including exhibits, witness fees, etc.), and shall each
     pay one-half (1/2) of the Mediator's fee(s).

             (c) The mediator shall be jointly selected as follows:

                 (1) Railroad shall designate five (5) members from the listed
                 panel of the U.S. District Court, Middle District of Florida as
                 a Potential Mediation Panel;

                 (2) Utility shall select one (1) of such Panel as the mediator;

                 (3) If the  selected  mediator  does not accept  the  mediation
                 appointment,   Utility  shall  designate  an  alternative,  and
                 continue  until  a  selected  mediator  accepts  the  mediation
                 appointment;

                 (4) If none of the Panel accepts the appointment, Utility shall
                 designate a new Potential  Mediation Panel of five (5) from the
                 list in Paragraph  2.(b)(1),  and Railroad shall select one (1)
                 of such Panel, as in Paragraphs (2) and (3).

             (d) The form of the Agreement to Mediate shall be as follows:


                                        2
<PAGE>


                              AGREEMENT TO MEDIATE

          Railroad and Utility,  through  their  respective  counsel,  stipulate
     that:

          1. The Dispute embodied in the Agreement stated is hereby submitted to
     mediation.

          2. The parties have selected _________________________ to be the
     mediator in this case.

          3. Parties  agree to meet with the mediator at _________ on _________,
     and continue to engage in the mediation process thereafter, if appropriate,
     as agreed to by the parties.

          4. The mediator shall be paid an hourly fee of $__________, with said
     fee apportioned equally among the parties.

          5. The mediation shall be private, unless the parties and the mediator
     otherwise  agree.  No  session  shall be  recorded,  and there  shall be no
     stenographic record maintained.

          6. Parties and counsel agree that the  mediator's  work product,  case
     file and any communication  made in the course of the mediation (other than
     the final signed Mediation Agreement) shall be confidential and not subject
     to  disclosure  in  any  subsequent  judicial,  administrative  or  private
     proceeding.

          7.  Parties  and  counsel  agree  that any  information,  writings  or
     disclosures  made during the mediation  process are governed by Rule 408 of
     the  Federal  Rules  of  Evidence,  and  shall  not  be  admissible  in any
     subsequent proceedings unless otherwise discoverable.

          8. Parties and counsel agree to participate fully in the mediation
     process and to do so in good faith.

          9. The mediator shall not be liable to any party for any act or
     omission in connection with the mediation conducted in this case.

          10. If possible, officers of the parties with full authority to settle
     the  Dispute  shall be present at the  Mediation.  Should  officers  of the
     parties, for whatever reason, not be present, counsel for each party agrees
     to attend the mediation  and have full and  immediate  access to the person
     authorized to settle during the entire course of the mediation.

          11. An agreement shall be executed by the parties if the Dispute is
     resolved.

          12. The mediation shall commence at the offices of __________________,
     on ____________________, at ____________________.

     RAILROAD:  By:___________________________ Date:___________________________

     RAILROAD ATTORNEY:_______________________________________

     UTILITY:   By:___________________________ Date:___________________________

     UTILITY ATTORNEY:________________________________________

     Accepted by Mediator:____________________ Date:___________________________

    4. Modification. These procedures may be modified by the parties hereto
without necessity of amending the Agreement.


                                        3
<PAGE>


                                    EXHIBIT L

                    AUTHORIZATION FOR FIBER OPTIC CABLE WORK

       FOR __________________________________________________ ("UTILITY")

CSX TRANSPORTATION, INC.
EXPENDITURES BILLING - J686
6735 Southpoint Drive, S
Jacksonville, FL 32216-6177

ATTENTION: GAIL A. LYCETT
(904) 279-6667 - FAX

THIS NOTICE CONFIRMS  UTILITY'S  AUTHORIZATION FOR FIBER OPTIC CABLE MAINTENANCE
OR EMERGENCY REPAIRS ON CSXT RIGHT-OF-WAY.

CSXT COST COLLECTION NUMBER (OSP):______________________________________________

EFFECTIVE DATE:_________________________________________________________________

LOCATION (S): CITY_____________________________________________  STATE__________

MILEPOST (S):___________________________________________________________________

UTILITY'S PROJECT NUMBER:_______________________________________________________

WORK DESCRIPTION:_______________________________________________________________

- - --------------------------------------------------------------------------------

- - --------------------------------------------------------------------------------

- - --------------------------------------------------------------------------------

BEGINNING/ENDING DATES:  1.  START________________________________________

                         2.  END  ________________________________________

IF YOU HAVE ANY ADDITIONAL QUESTIONS, PLEASE CALL      _________________________

                                          Utility Representative's Phone Number)

               APPROVED:

               ---------------------------------  ------------------------------
               NAME                               TITLE

CC:  L. L. GALBREATH - CSXT (904)245-1030FAX

<PAGE>
                                                                       EXHIBIT M



                                                                     MWI 1905-01
                                                    FIBER OPTIC INSTALLATION SOP
[CSX TRANSPORTATION]                             ISSUED: 6/30/98   INITIAL ISSUE
                                                                     PAGE 1 OF 9

- - --------------------------------------------------------------------------------

PURPOSE:            To provide a Standard Operating Procedure for all fiber
                    optic installations.

SAFETY:             Observe all applicable Safety, and Operating Rules and
                    Regulations; and Safe Job Procedures. The CSXT Fiber Optic
                    Safety Program Requirements are included in this MWI.

LOCATION:           All CSXT tracks.

ENVIRONMENTAL:      Observe all applicable Federal, State and Local
    MSDS:           environmental rules and regulations.


I.   DISCUSSION

There are three previously issued MWIs concerning Fiber Optic projects. This MWI
is intended to supplement and support those MWIs. The previous MWIs are:

     -  MWI 1902, Fiber Optic Maintenance Projects,
     -  MWI 1903,  Protection  and/or  Relocation  of Fiber Optic Cable for CSXT
        Purposes or Installation of Side Tracks Serving CSXT Shippers, and
     -  MWI 1904, New Installation Projects for Fiber Optic Telecommunications.

II.  PROCEDURE

The following  procedure is the CSXT Standard Operating  Procedure (SOP) for all
fiber optic  installations  on CSXT properties and will be included in all fiber
optic specifications for construction.

     A. Quarterly Oversight Meetings:

        The  Director - Budget  and  Contracts  will  schedule  these  oversight
        meetings  once per quarter.  Additional  meetings may be  scheduled,  if
        required by the volume of  activity.  The  meetings  will be attended by
        representatives  from all concerned Fiber Optic Companies (FOC) and CSXT
        Management, Real Property and Engineering.  The meetings will review the
        scopes of work and schedules of all current and future projects, as well
        as planning, pre-bid,  pre-construction and construction requirements as
        described below.
<PAGE>
MWI 1905-01
6/30/98
Page 2 of 9

     B. Plan Review Meeting:

        The  Director - Budget and  Contracts  will  schedule  these Plan Review
        meetings as necessary.  The meeting will be attended by  representatives
        from the  concerned  FOC,  CSXT  Engineering  and the  CSXT  engineering
        consultant  for the  project.  The  meeting  will review the pre-bid and
        scheduling,  pre-construction  and construction  requirements  described
        below.

     C. Pre-Bid and Scheduling Meeting:

        The FOC will schedule the Pre-Bid and  Scheduling  meeting.  The meeting
        will be attended by representatives  from the concerned FOC, Contractors
        and CSXT Engineering (and/or CSXT Consultant).  This meeting will assign
        the Point Of  Contact  (POC)  for the FOC and for the  CSXT,  as well as
        clarify the safety and manpower requirements.

          1. Project Points of Contact

               a) The POC will be assigned for the CSXT Subdivision on which the
                  project  is  located.  There  will  be a  single  POC  for the
                  Railroad  and  another   designated  by  the  FOC.  These  two
                  individual  will be the contact points and decision makers for
                  the project. All calls,  questions or problems will be handled
                  with the assigned POC. This will  eliminate  many  unnecessary
                  calls.

               b) The CSXT POC will be responsible for:

                    -  All contacts within CSXT,  including  coordination of all
                       departments   involved  with  the   pre-construction  and
                       construction portions of the project.

                    -  All CSXT Transportation,  Engineering,  and Train Control
                       decisions during construction.

               c) The CSXT POC and the FOC POC will coordinate all aspects of
                  construction.

          2. Requirements for Safety and Manpower:

               a) Safety Requirements include:

                    - Daily job briefing and updates as required.

                    -  All workers on CSXT property must comply with CSXT Safety
                       Requirements including wear all required safety equipment
                       (see Safety Requirements, page 5).

                    -  CSXT will train one FOC  employee  in safety.  The FOC is
                       responsible  for ensuring all FOC employees & contractors
                       on site are properly trained.


<PAGE>
MWI 1905-01
6/30/98
Page 3 of 9


               b) Notification for Flagman and Signalman:

                    -  Because of manpower  demands and/or labor  agreements,  a
                       minimum  of 6  weeks  notice  is  preferred,  for  either
                       position.  Less than six weeks  notice  may result in job
                       delays.

                    -  Because of safety concerns and customer obligations, a 10
                       mile work limit per RR Subdivision is necessary.

          3. Emergency Contact Procedures:

                    - All emergencies will be reported to both POCs.

                    -  In event  the  POCs  cannot  be  reached,  the  emergency
                       information  will be reported the CSX Police  operator at
                       1-800-232-0144.  The POCs must be  notified  of  existing
                       situation ASAP.

     D. Pre-Construction Meeting:

        The FOC will schedule the Pre-Construction meeting. FOC will provide two
        (2) weeks written notice prior to Pre-Construction  Meeting to CSXT POC,
        CSXT Director - Budget and Contracts,  CSX Real  Property,  & CSXT Train
        Control  (Jacksonville).  The  meeting  will be  attended  by both POCs,
        representatives  from  Contractors  and CSXT  Engineering  (and/or  CSXT
        Consultant) and field supervisors, as necessary. The meeting will review
        the pre-bid and scheduling requirements described above.

     E. Construction Meeting:

        The FOC will  schedule  the  Construction  meeting.  The meeting will be
        attended  by  both  POCs,  representatives  from  Contractors  and  CSXT
        Engineering   (and/or  CSXT  Consultant)  and  field   supervisors,   as
        necessary.   The  meeting   will  review  the  pre-bid  and   scheduling
        requirements,  as  well  as  the  results  of the  construction  meeting
        described above.

          1. The project  schedule  will be  reviewed  in detail.  The CSXT POC,
             after consultation with the Division Engineer's office, will advise
             the FOC POC of all work times and locations.

          2. Track roadbed and ballast protection will be highlighted to the FOC
             and its  contractors.  The FOC and/or its contractors will maintain
             (at  all  times)  sufficient  ballast  rock  on the  job  site  for
             necessary  ballast  section  repairs  and/or  backfill,   including
             appropriate machinery for placement and compaction.

          3. All excavation will be shored in accordance with CSXT Safe Way Rule
             E-2 and restored as required above.
<PAGE>
MWI 1905-01
6/30/98
Page 4 of 9


          4. All construction and site restoration will be performed to the
             satisfaction of the Division Engineer and approved by the CSXT POC.


III. REFERENCES

     A. The CSX Transportation Fiber Optic Program Safety Requirements are
        included for easy reference. It begins on page five.

     B. The services provided by the consultants provide by CSXT are identified
        in the CSX Transportation Inspection and Supervision of Installation of
        Fiber Optic Conduit System. It begins on page six.
<PAGE>
MWI 1905-01
6/30/98
Page 5 of 9


                               CSX TRANSPORTATION
                               FIBER OPTIC PROGRAM
                               SAFETY REQUIREMENTS


GENERAL

- - -  - All fiber optic  workers must receive  CSXT SAFETY  AWARENESS  training and
   have a verification  card and/or hard hat sticker.  All CSXT Safety Rules and
   Contractor Policies will apply to fiber optic workers.

- - -  - All personnel  must wear CSXT  approved  Personal  Protection  Equipment in
   accordance  with "The CSX Safe Way" book,  which  includes  hard hat,  safety
   glasses,  steel toed shoes, hearing protection,  and others as specified,  by
   work type or local  supervision,  WHEN  WORKING  CLOSER THAN 25 FEET FROM THE
   NEAREST RAIL OF A MAIN TRACK.  When  working  beyond 25 feet from the nearest
   rail of a main track,  hard hats,  safety  glasses,  and laced work boots (no
   tennis shoes or street shoes) will be required.

- - -  - All "FRA Bridge  Worker  Safety"  rules will apply to fiber  optic  workers
   performing bridge attachments, including proper fall protection rules.

- - -  - All test  holes or pits  less  than 15 feet  from  the  centerline  of main
   tracks, will be filled or covered prior to passing of trains. No open pits or
   holes will be left over night. All pits and trenches will be shored according
   to OSHA requirements.

- - - - No dirt or debris will be allowed to foul the ballast section of the tracks.

- - - - No markings will be made on the rail or ties.

- - -  - All  excavation  or  plow  trenches  will  be  back  filled  and  compacted
   immediately after the work is done.

- - -  - All public  utilities,  CSXT  Engineering,  and the Railroad  Train Control
   Office, will be notified prior to any construction.

- - -  - Job Briefings  will be conducted  each morning and  throughout the day when
   conditions or job scope changes.


WORKING ON OR AROUND TRACKS

- - -  - All work in the FRA Red Zone (4 feet from  outside rail on each side of the
   track) will be done only with a CSXT,  FRA  qualified  flagman or watchman as
   specified by the local Engineering representative.

- - -  - All work  beyond 4 feet  from the  outside  rails,  must be done  under the
   supervision of a CSXT qualified inspector or flagman.

- - -  - Certain  types of work done  beyond 25 feet from the  outside of the rails,
   and with equipment that will not reach beyond this point, may be done without
   flagging  protection  or a watchman,  IF  APPROVED  BY THE LOCAL  ENGINEERING
   REPRESENTATIVE, AND PROTECTED BY A CONSTRUCTION FENCE.

- - - - All work must be stopped while trains are passing within the work zone.

- - -  - All workers will remain off the tracks. If necessary to perform the work on
   track, protection will be provided as stated above.

ANY  VIOLATION  OF ANY CSXT  SAFETY  RULES OR  POLICY,  MAY RESULT IN REMOVAL OF
CONTRACTOR OR PERSONEL FROM THE RIGHT OF WAY.



                              CSXT/LLG Rev. 06-12-98  Approved by Manager Safety
<PAGE>
MWI 1905-01
6/30/98
Page 6 of 9


                               CSX TRANSPORTATION
                             ENGINEERING DEPARTMENT
                                JACKSONVILLE, FL
                          INSPECTION AND SUPERVISION OF
                   INSTALLATION OF FIBER OPTIC CONDUIT SYSTEM


    CSXT has  retained  (consultant)  as an  engineering  consultant  to perform
    certain professional services,  which primarily entail intellectual work and
    professional   judgment,   and  may  or  may  not  require  supervision  and
    performance of some ancillary tasks or use of equipment such as instruments,
    tools, or machinery.



                      SCOPE OF ENGINEERING SERVICES SUMMARY

    GENERAL

    The  engineering  services  described  herein are  intended  to protect  the
    interests  of CSXT  during the  installation  of  conduit  systems by system
    owners and their installers on CSXT right-of-way. These engineering services
    will be performed by (consultant), Inc., hereinafter called "Consultant".

    The fiber  conduit  system will not be owned nor installed by CSXT (CSXT may
    acquire conduits or cables after installation). Plans and specifications for
    the  installation  of the conduit  system will be prepared by conduit system
    owners or their designated representatives. Plans and specifications will be
    subject to the review and  approval  of CSXT.  Installation  of the  conduit
    system will be performed by system owners or their contracted installers.

    SAFETY

    The Consultant's  employees that enter CSXT right-of-way shall be trained in
    Railroad  Safety  Awareness,  knowledgeable  of "FRA On Track Worker  Safety
    Rules",  and shall at all times wear required  safety  equipment  (steel toe
    shoes,  hard hat,  safety  glasses with side  shields or goggles,  and other
    items as specified by CSXT supervisors).

    SUMMARY OF SERVICES

    Engineering services shall include, but not be limited to, the following:

     -    PLAN REVIEW SERVICES

     Review  plans and  specifications  submitted  by Fiber Optic  Communication
     companies,  or their  installers,  and provide other support as directed by
     CSXT. The tasks assigned may include the following:

          Perform plan reviews and on-site  inspections in accordance  with CSXT
          Standards, and verify the terms of the installation agreements.

          Obtain and  coordinate  input from other CSXT units such as Design and
          Construction,  Real Estate Properties,  Division Engineering Units, or
          their designated representatives.

<PAGE>
MWI 1905-01
6/30/98
Page 7 of 9


          Prepare   marked  up  plans   together   with  reports  that  identify
          recommended actions and/or changes.

          Communicate  with the Fiber  Optics  Communications  companies  and/or
          their installers with regard to changes, revisions and approvals.

          Coordinate with other utility and/or fiber optic companies who already
          have  facilities and  installations  in place on CSXT right of way, or
          plan future installations.

          Coordinate the scheduling of High Rail  Inspections of projects during
          the planning and design phases.

          Obtain final plan approvals from the Division Engineering Units.

     -    CONSTRUCTION SERVICES

     Provide Construction Engineering and Inspection Services as follows:

          Promote safety at the work site by verifying that the owners and their
          installers comply with instructions of CSXT's flagmen, watchmen, etc.,
          and with CSXT  Safety  and FRA On Track  Worker  Safety  Requirements.
          (CSXT will provide a flagman to provide warning and protect the tracks
          for the movement of trains, when required).

          Provide  engineering  representation  on  behalf  of  CSXT  at  on-and
          off-site  meetings,   pre-bid  meetings,   pre-construction  meetings,
          progress meetings, final inspection, etc.

          Represent  CSXT in meetings  with state and local  agencies  regarding
          entry and disturbance of road crossings and other public facilities by
          the owners or installers.

          Confirm that the owners or their  installers  have notified the owners
          of  underground  facilities on CSXT property  which may be affected by
          the proposed work, and confirm that they have coordinated the proposed
          work with them.

          For each inspection  location,  maintain daily  communication (or more
          frequent  if  required)  with CSXT  Division  Engineer  or  designated
          representative  or D & C Project  Manager  as may be  directed  by the
          office of the Assistant  Chief  Engineer D & C via fax and/or  e-mail,
          and cell phone.

          Provide  daily  on-site  observation  at  all  work  locations  on  or
          immediately adjacent to CSXT property during installation of the fiber
          optic conduit systems.

          Verify that the owners and/or their  installers are in compliance with
          the  requirements  for Federal,  State,  Local and CSXT  environmental
          regulations, permits, etc., and coordinate with the CSXT Environmental
          Department.

          Monitor the installation of the conduit system for compliance with the
          approved plans and specifications.  Consultant will have the authority
          to  act  on   behalf  of  CSXT  and  the   Chief   Engineer,   or  his
          representative, to insure such compliance.
<PAGE>
MWI 1905-01
6/30/98
Page 8 of 9


          Approve minor  adjustments or deviations from the plan,  provided such
          adjustments or deviations are consistent  with the criteria  furnished
          by CSXT and used for Consultant's review of the plans.

          Promptly  report any  disputes,  major  deviations  and other items of
          concern to the designated CSXT Division Engineer, CSXT Project Manager
          or any  environmental  concerns to the designated  CSXT  Environmental
          Officer.

          Confirm the actual horizontal and vertical location of the fiber optic
          cable conform to the plans and specifications by physical  measurement
          at regular  intervals  and where  otherwise  required in  Consultant's
          judgment.  This  work  shall  be  coordinated  with the  owner  and/or
          installer, and CSXT as required.

          Ensure prompt clean up and  restoration of CSXT property by the owners
          and/or  installers  following  installation  of the fiber  optic cable
          systems,  to the  satisfaction of the  Division/Service  Lane/Business
          Unit engineering representative.

      STAFFING

          Upon notice of project  authorization,  (consultant) will assign, as a
          minimum, one Senior Construction Inspector to each project. Additional
          inspectors may be assigned to large, urban, or highly complex projects
          when specified by CSXT. The inspectors  will be equipped with suitable
          transportation, cell phones, portable computers and other equipment as
          may be required on the  project.  The  inspectors  will based near the
          site,  and be available  during the normal hours worked by the owner's
          and/or installer's forces.

      REPORTS

- - - -    PLAN REVIEW SERVICES

          Prepare marked up plans and reports  documenting  recommended  actions
          and/or proposed changes.

- - - -    CONSTRUCTION SERVICES

          Maintain  a daily  diary or log of  events  including  items  such as:
          supervisory  personnel  employed by the owners or their  installers at
          the  work  site;  type,   number  and  condition  of  the  owner's  or
          installer's equipment;  time of arrival and departure of CSXT flagmen,
          watchmen,  signal inspectors and other personnel;  time of arrival and
          departure of work trains and other CSXT  furnished  equipment;  "track
          time" allowed for work; the owners or their installers  production and
          progress; and any unusual occurrences.

          Provide detailed weekly status reports for all work locations.



Approved:      signed by R. K. Beckham

Date:          June 5, 1998



                                                          CSXT/LLG-Rev. 06-04-98
<PAGE>
MWI 1905-01
6/30/98
Page 9 of 9




Prepared by:   L. L. Galbreath




Reviewed:      /s/  ILLEGIBLE
               -------------------------------------------
               Director - Standards & Testing



Approved:      /s/ ILLEGIBLE
               -------------------------------------------
               AVP - Equipment & Track Systems Engineering



Office of the Assistant Vice President - Equipment and Track Systems Engineering
Jacksonville, Florida
MWI 1905-01, June 30, 1998


                                                                   Exhibit 10.10

                       ASSIGNMENT AND ACCEPTANCE AGREEMENT

         THIS ASSIGNMENT AND ACCEPTANCE AGREEMENT (this "Agreement"),dated as of
March 30, 2000, is by and between  Pathnet,  Inc., a Delaware  corporation  (the
"Seller")  and Pathnet  Telecommunications,  Inc., a Delaware  corporation  (the
"Purchaser").

                                   WITNESSETH:

         WHEREAS, Seller currently holds certain assets relating to the fiber
portion of its digital network;

         WHEREAS,  Purchaser  desires to purchase,  and Seller  desires to sell,
such assets,  and, as part of such purchase and sale,  Seller desires to assign,
and the Purchaser  desires to assume,  all of the  obligations  and  liabilities
relating to such assets,  subject,  in each case, to the  exemptions,  terms and
conditions set forth herein;

         NOW  THEREFORE,  in  consideration  of  the  premises  and  the  mutual
representations,  warranties and covenants and agreements hereinafter set forth,
and upon the terms and subject to the conditions  hereinafter set forth,  Seller
and Purchaser hereby agree as follows:

                                    ARTICLE I
                                   DEFINITIONS

         1.1 Certain Definitions. As used in this Agreement, the following terms
shall have the respective  meanings set forth below (such meanings to be equally
applicable to both the singular and the plural forms of the terms defined).

         (a)      Affiliate: As defined in Section 8.1.

         (b)      Agreement: As defined in the preamble.

         (c)      Closing: As defined in Article VII.

         (d)      Colonial Contribution Agreement: Shall mean that certain
Contribution Agreement, dated as of November 2, 1999, by and among the
Purchaser, the Seller and Colonial Pipeline Company, a Delaware and Virginia
corporation.

         (e) Contribution  Agreements:  Shall mean (i) that certain Contribution
Agreement,  dated as of November 2, 1999, by and among the Purchaser, the Seller
and The Burlington  Northern Santa Fe Railway Company,  a Delaware  corporation,
(ii) that certain Contribution  Agreement,  dated as of November 2, 1999, by and
among the  Purchaser,  the  Seller  and CSX  Transportation,  Inc.,  a  Virginia
corporation,  (iii) that certain Contribution Agreement, dated as of November 2,
1999, by and among the Purchaser,  the Seller and the preferred  stockholders of
the Purchaser, (iv) that certain


                                       -1-
<PAGE>
Contribution  Agreement,  dated  as of  November  2,  1999,  by  and  among  the
Purchaser,  the Seller and certain common stockholders of the Purchaser, and (v)
that certain  Contribution  Agreement,  dated November 4, 1999, by and among the
Purchaser, the Seller and David Schaeffer.

         (f)      Contribution Agreement Closing: As defined in Section 6.1(e).

         (e)      Fiber Assets:     As defined in Section 2.1.

         (f)      Indemnified Persons:      As defined in Section 8.1

         (g)      Indemnifying Persons:     As defined in Section 8.1.

         (h)      Purchaser: As defined in the preamble.

         (i)      Purchased Assets: As defined in Section 2.1.

         (j)      Purchase Price:   As defined in Section 4.1.

         (k)      Seller: As defined in the preamble.

         (l)      Survival Date:    As defined in Section 8.4.

                                   ARTICLE II
                              ASSETS TO BE ACQUIRED

         2.1 Acquisition and Transfer of Assets.  At the Closing (as hereinafter
defined),  upon the terms and subject to the conditions  hereinafter  set forth,
Seller  shall  sell,  assign,  transfer,  convey and deliver to  Purchaser,  and
Purchaser  shall purchase,  acquire and accept from Seller all right,  title and
interest of Seller in and to the certain assets relating to the fiber portion of
Seller's digital network,  including,  without limitation,  in and to all of the
assets,  properties,  rights,  contracts and claims  employed in connection with
such assets, wherever located, whether tangible or intangible, as the same shall
exist as of the  Closing.  The assets,  properties,  contracts  and claims to be
purchased pursuant to this Agreement are hereinafter collectively referred to as
the "Fiber  Assets." The Fiber Assets shall  include,  without  limitation,  all
right,  title and interest of Seller and its  Subsidiaries in and to the assets,
properties,  rights,  contracts and claims described in the following paragraphs
(a) through (g) but in each case, only to the extent  exclusively  used in, held
for exclusive use in or exclusively related to the Fiber Assets:

         (a) all rights in, to and under all contracts, commitments and other
agreements of Seller set forth below:

         (i)      Agreement between Pacific Fiber Link, LLC (A/K/A Worldwide
                  Fiber, Inc.) and Pathnet, Inc., dated March 31, 1999 as
                  amended by Letter, dated


                                       -2-
<PAGE>
                  June 28, 1999 and the Marketing Agreement between Pacific
                  Fiber Link, LLC (A/K/A Worldwide Fiber, Inc.) and Pathnet,
                  dated March 31, 1999.

         (ii)     Dark Fiber Network Agreement by and between Pathnet, Inc.,
                  Tri-State Generation and Transmission Association, Inc. and
                  other Participating Members Systems named therein, dated
                  August 5, 1999, Letter Agreement between Pathnet, Inc. and
                  Tri-State Generation and Transmission Association, Inc. dated
                  December 31, 1999 and Letter Agreement between Pathnet, Inc.
                  and Tri-State Generation and Transmission Association, Inc.
                  dated January 17, 2000, including the associated right of way
                  pursuant to Fiber Optic Cable Construction and Use Agreement
                  between Public Service Company of New Mexico and Pathnet, Inc.
                  dated June 9, 1999 and Fiber Optic Cable License Agreement
                  between Public Service Company of New Mexico and Pathnet, Inc.
                  dated December 23, 1999.

         (iii)    Agreement between CapRock Telecommunications Corp and Pathnet,
                  Inc. dated November 18, 1999 and Joint Marketing Agreement
                  between Pathnet, Inc. and CapRock Telecommunications, Corp,
                  dated November 18, 2999 and Letter Agreement between Pathnet,
                  Inc. and CapRock Telecommunications, Inc., dated January 17,
                  2000.

         (b)  all  inventories  of  work-in-progress,  raw  materials,  finished
products,  supplies, spare parts and other materials relating to the fiber route
under construction between Chicago, Illinois and Aurora, Colorado;

         (c)      all rights in and to insurance and indemnity claims relating
to the Fiber Assets;

         (d)      all prepaid expenses, advances and deposits relating to the
Fiber Assets;

         (e)      all rights, choses in action and claims, (known or unknown,
matured or unmatured, accrued or contingent) against third parties relating to
the Fiber Assets;

         (f)      all goodwill and going concern rights associated with the
items listed above; and

         (h)      a license to the intellectual property of Seller as set forth
in the License of Marks attached hereto as Exhibit A.

For convenience of reference,  the assets,  properties,  interests in properties
and rights that are to be sold, transferred,  conveyed and assigned to Purchaser
pursuant  to this  Section  2.1  are  collectively  referred  to  herein  as the
"Purchased Assets."

         2.2 Instrument of Conveyance and Transfer, Etc. At the Closing, Seller
shall deliver (or cause to be delivered) to Purchaser such deeds, bills of sale,
endorsements, assignments and other instruments of transfer, conveyance and
assignment as shall be


                                       -3-
<PAGE>
necessary to transfer,  convey and assign the Purchased Assets to the Purchaser.
Simultaneously therewith,  Seller shall take all steps as may be required to put
the Purchaser in possession of the Purchased Assets.

         2.3 Right of  Endorsement,  Etc.  Effective  upon the  Closing,  Seller
hereby constitutes and appoints Purchaser,  its successors and assigns, the true
and lawful attorney of the Seller with full power of  substitution,  in the name
of  Purchaser,  or the name of  Seller,  on  behalf  of and for the  benefit  of
Purchaser,  to collect all accounts and notes  receivable  and other items being
transferred,  conveyed and assigned to Purchaser as provided herein, to endorse,
without recourse,  checks, notes and other instruments in the name of Seller, to
institute and  prosecute,  in the name of Seller or otherwise,  all  proceedings
which  Purchaser  may deem  proper in order to  collect,  assert or enforce  any
claim,  right or title of any kind in or to the Purchased  Assets, to defend and
compromise  any and all actions,  suits or  proceedings in respect of any of the
Purchased  Assets,  and to do all such acts and  things in  relation  thereto as
Purchaser  may deem  advisable.  Seller  agrees  that the  foregoing  powers are
coupled  with an  interest  and shall be  irrevocable  by  Seller,  directly  or
indirectly,  whether  by the  dissolution  of Seller or in any manner or for any
reason.

         2.4 Further Assurances; Etc. Seller shall pay to Purchaser promptly any
amounts  which shall be received by Seller  after the Closing  which are, or are
received in connection with, Purchased Assets.  Seller at any time and from time
to time after the Closing,  upon the request of Purchaser  and at the expense of
Seller, shall do, execute,  acknowledge,  deliver and file, or shall cause to be
done, executed, acknowledged,  delivered or filed, all such further acts, deeds,
transfers,  conveyances,  assignments  or  assurance  as may be required for the
better  transferring,  conveying,  assigning and assuring to  Purchaser,  or for
aiding  and  assisting  in  the  collection  of or  reducing  to  possession  by
Purchaser, any of the assets, properties or rights being purchased hereunder.

         2.5 Assignment of Contracts,  Rights,  Etc. Anything  contained in this
Agreement to the contrary  notwithstanding,  this Agreement shall not constitute
an  agreement  or  attempted  agreement  to  transfer,  sublease  or assign  any
contract,  license, lease, sales order, purchase order or other agreement or any
claim or right of any benefit arising  thereunder or resulting  therefrom or any
permit or operating authority if an attempted  transfer,  sublease or assignment
thereof,  without the consent of any other party  thereto,  would  constitute  a
breach thereof or in any way affect the rights of Purchaser  thereunder.  Seller
and Purchaser shall use their respective best efforts,  and shall cooperate with
each other, to obtain the consent of such third party to any of the foregoing to
the  assignment  or  transfer  thereof to  Purchaser  in all cases in which such
consent is required for assignment or transfer. If such consent is not obtained,
Seller shall cooperate with Purchaser in any arrangements necessary or desirable
to provide for Purchaser the benefits thereunder, including, without limitation,
enforcement for the benefit of Purchaser of any and all rights of Seller thereof
against the other party thereto  arising out of the  cancellation  by such other
party or otherwise.


                                       -4-
<PAGE>
                                   ARTICLE III
                            ASSUMPTION OF LIABILITIES

         On  the  terms  and  subject  to  the  conditions  of  this  Agreement,
simultaneously with the transfer,  conveyance and assignment to Purchaser of the
Purchased Assets,  Purchaser shall assume all of the liabilities and obligations
relating to the Purchased Assets as such liabilities and obligations shall exist
immediately prior to the Closing.

                                   ARTICLE IV
                           PURCHASE PRICE OF PURCHASED
                               ASSETS; ALLOCATION

         4.1 Purchase  Price.  The aggregate  purchase  price to be paid for the
Purchased  Assets shall be $70,000,000 (the "Purchase  Price").  At the Closing,
against  delivery to the  Purchaser  of  appropriate  instruments  of  transfer,
conveyance and assignment  with respect to the Purchased  Assets,  the Purchaser
shall deliver to the Seller,  a Promissory  Note in the form attached  hereto as
Exhibit B in the principal amount of $70,000,000.

                                    ARTICLE V
                         REPRESENTATIONS AND WARRANTIES

         5.1 Representations and Warranties of the Seller. The Seller hereby
represents and warrants to the Purchaser as follows:

             (a)  Organization,  Standing and Power. The Seller is a corporation
         duly organized, validly existing and in good standing under the laws of
         the  State  of  Delaware  and has all  requisite  corporate  power  and
         authority to own,  lease and operate its properties and to carry on its
         business  as now being  conducted;  and the  Seller  has all  requisite
         corporate  power and  authority  and to enter into this  Agreement,  to
         perform its  obligations  hereunder and to consummate the  transactions
         contemplated  hereby.  Seller is duly qualified and in good standing to
         do  business  in every  jurisdiction  in which  such  qualification  is
         necessary.

             (b) Authority. The execution and delivery of this Agreement and the
         consummation of the transactions contemplated hereby have been duly and
         validly authorized by all necessary corporate action and on the part of
         the  Seller  and  this  Agreement   constitutes  a  valid  and  binding
         obligation  of the Seller  enforceable  in  accordance  with its terms.
         Neither the execution,  delivery and  performance of this Agreement nor
         the consummation by the Seller of the transactions  contemplated hereby
         nor compliance by the Seller with any of the provisions hereof will (i)
         conflict with or result in a breach of any provision of the Certificate
         of Incorporation or Bylaws of the Seller, (ii) cause a default (or give
         rise to any right of termination,  cancellation or acceleration)  under
         any of the terms,  conditions or provisions of any note,  bond,  lease,
         mortgage,  indenture, license or other instrument or agreement to which
         the Seller,  or by which the Seller, or any of its properties or assets
         is or may be bound or (iii) violate any law,


                                       -5-
<PAGE>
         statute,  rule or regulation or order,  writ,  judgment,  injunction or
         decree applicable to the Seller, or any of its properties or assets.


         5.2 Representations and Warranties of the Purchaser. The Purchaser
hereby represents and warrants to the Seller as follows:

                  (a)  Organization,  Standing  and Power.  The  Purchaser  is a
         corporation duly organized, validly existing and in good standing under
         the laws of the State of Delaware and has all requisite corporate power
         and authority to own, lease and operate its properties, to carry on its
         business  as now being  conducted,  to enter  into this  Agreement,  to
         perform its  obligations  hereunder and to consummate the  transactions
         contemplated hereby.

                  (b)  Authority.  The execution and delivery of this  Agreement
         and the consummation of the transactions  contemplated hereby have been
         duly and validly  authorized by all necessary  corporate  action on the
         part of the  Purchaser  and  this  Agreement  constitutes  a valid  and
         binding obligation of the Purchaser, enforceable in accordance with its
         terms.  Neither  the  execution,   delivery  and  performance  of  this
         Agreement nor the consummation of the transactions  contemplated hereby
         nor compliance by the Purchaser with any of the provisions  hereof will
         (i)  conflict  with or  result  in a  breach  of any  provision  of its
         Certificate of Incorporation  or Bylaws,  (ii) cause a default (or give
         rise to any right of termination,  cancellation or acceleration)  under
         any of the terms,  conditions or provisions of any note,  bond,  lease,
         mortgage,  indenture, license or other instrument or agreement to which
         the  Purchaser is a party,  or by which it or its  properties or assets
         may be bound, or (iii) violate any law, statute,  rule or regulation or
         order, writ, injunction or decree applicable to the Purchaser or any of
         its properties or assets.
                                   ARTICLE VI
                              CONDITIONS OF CLOSING

         6.1 Conditions of Obligations of the Purchaser.  The obligations of the
Purchaser  to perform  this  Agreement  are subject to the  satisfaction  of the
following conditions unless waived by the Purchaser:

                  (a)  Representations  and Warranties.  The representations and
         warranties  of the Seller set forth in Section 5.1 hereof shall be true
         and correct in all material  respects as of the date of this  Agreement
         and as of the Closing Date (as  hereinafter  defined) as though made on
         and as of the Closing Date.

                  (b)  Authorization.  All action  necessary to  authorized  the
         execution, delivery and performance of this Agreement by the Seller and
         the  consummation of the  transactions  contemplated  hereby shall have
         been duly and validly taken.


                                       -6-
<PAGE>
                  (c) Instruments of Transfer, Conveyance and Assignment. The
         Purchaser shall have received duly executed instruments of transfer,
         conveyance and assignment as contemplated by Section 2.2 hereof.

                  (d) Consents and Approvals.  The Purchaser shall have received
         duly executed  copies of all consents and approvals  required for or in
         connection  with the  execution  and  delivery  by the  Seller  of this
         Agreement and the consummation of the transactions  contemplated hereby
         including  the consent of the holders of the  Seller's 12 -1/4%  Senior
         Notes in accordance with the Indenture by and between Pathnet, Inc. and
         The Bank of New York, dated April 8, 1998.

                  (e) Closing  under  Contribution  Agreements.  The Closing (as
         defined in the  Contribution  Agreements)  and the Initial  Closing (as
         defined in the Colonial  Contribution  Agreement)  shall have  occurred
         (together, such occurrences, the "Contribution Agreement Closing").

         6.2  Conditions of Obligations  of the Seller.  The  obligations of the
Seller  to  perform  this  Agreement  are  subject  to the  satisfaction  of the
following conditions unless waived by the Seller:

                  (a)  Representations  and Warranties.  The representations and
         warranties  of the  Purchaser  set forth in Section 5.2 hereof shall be
         true  and  correct  in all  material  respects  as of the  date of this
         Agreement  and as of the  Closing  Date as though made on and as of the
         Closing Date.

                  (b)  Authorization.  All action  necessary  to  authorize  the
         execution,  delivery and performance of this Agreement by the Purchaser
         and the consummation of the transactions contemplated hereby shall have
         been duly and validly taken by the Board of Directors of the Purchaser.

                  (c) Closing under Contribution Agreements. The Contribution
         Agreement Closing shall have occurred.

                                   ARTICLE VII
                                     CLOSING

         The closing (the "Closing") for the  consummation  of the  transactions
contemplated  by  this  Agreement  shall  take  place   immediately   after  the
Contribution Agreement Closing shall have occurred.


                                  ARTICLE VIII
                                 INDEMNIFICATION

         8.1  Definitions.  As used in this Article VIII,  the  following  terms
shall have the following respective meanings:


                                       -7-
<PAGE>
                  (a)  "Affiliate"  shall mean a person or entity that directly,
         or  indirectly  through  one or more  intermediaries,  controls,  or is
         controlled  by, or is under common  control  with,  any other person or
         entity.

                  (b) "Indemnified Persons" shall mean and include the
         Purchaser, all Affiliates of the Purchaser, and the successors and
         assigns of the foregoing; and

                  (c) "Indemnifying Persons" shall mean the Seller and its
         successors and assigns.

         8.2  Indemnification.  The  Indemnifying  Persons  shall,  jointly  and
severally,  indemnify  and  save  the  Indemnified  Persons,  and  each of them,
harmless from, against, for and in respect of the following:

                  (a) any and all liabilities and obligations of the Seller not
         assumed by the Purchaser pursuant to this Agreement;

                  (b)  any  liabilities  and  obligations  of  the  Indemnifying
         Persons for fees, costs and expenses  relating to or arising out of the
         execution,   delivery  and   performance  of  this  Agreement  and  the
         consummation  of  the  transactions   contemplated  hereby,  including,
         without  limitation,  legal and accounting  fees and expenses and taxes
         incurred by the Indemnifying Persons;

                  (c) any damages,  losses,  obligations,  liabilities,  claims,
         actions or causes of action  sustained  or suffered by the  Indemnified
         Persons,   or  any  of  them,   and  arising   from  a  breach  of  any
         representation,  warranty,  covenant or agreement  of the  Indemnifying
         Persons  contained  in or made  pursuant  to this  Agreement  or in any
         certificate,  instrument or agreement  delivered by any of such parties
         pursuant  hereto or in connection  with the  transactions  contemplated
         hereby, or any facts or circumstances constituting such breach;

                  (d) all damages,  losses,  obligations,  liabilities,  claims,
         actions or causes of action  sustained  or suffered by the  Indemnified
         Persons,  or any of them, as a result of  non-compliance  by the Seller
         with the  provisions of the "bulk sales laws" of any state which may be
         applicable to the transactions contemplated hereby;

                  (e) all damages,  losses,  obligations,  liabilities,  claims,
         actions or causes of action  sustained  or suffered by the  Indemnified
         Persons,  or any of them,  as a result of the  failure  to  obtain  any
         consent or provide  any benefit  under any  contract,  license,  lease,
         sales order, purchase order or other agreement, claim, right, permit or
         operating authority; and

                  (f) all reasonable costs and expenses (including, without
         limitation reasonable attorney's, accountants' and other professional
         fees and expenses)


                                       -8-
<PAGE>
         incurred by the Indemnified Persons, or any of them, in connection with
         any action, suit, proceeding,  demand,  assessment or judgment incident
         to any of the matters indemnified against under Section 8.2(a), Section
         8.2(b), Section 8.2 (c), Section 8.2 (d) and Section 8.2 (e) hereof.

No  claim,  demand,  suit or  cause  of  action  shall be  brought  against  the
Indemnifying   Persons  under  or  pursuant  to  this  Section  8.2  unless  the
Indemnified  Persons, or any of them, at any time prior to the Survival Date (as
defined in Section 8.4 hereof),  give the  Indemnifying  Persons written notice,
with reasonable specificity, of the existence of any such claim, demand, suit or
cause of action under this Agreement.  Upon the giving of such written notice as
aforesaid,  the  Indemnified  Persons,  or any of them,  shall have the right to
commence legal  proceedings  within one year subsequent to the Survival Date for
the enforcement of its or their rights under this Agreement.

         8.3  Third  Party  Claims.  The  obligations  and  liabilities  of  the
Indemnifying  Persons  hereunder  with  respect  to  claims  resulting  from the
assertion of liability by third parties shall be subject to the following  terms
and conditions:

                  (a) The  Indemnified  Persons shall give prompt written notice
         to the  Indemnifying  Persons of any  assertion of liability by a third
         party  which  might  give  rise to a claim by the  Indemnified  Persons
         against  the  Indemnified  Persons  based on the  indemnity  agreements
         contained  in Section 8.2 hereof,  stating the nature and basis of said
         assertion and the amount thereof, to the extent known.

                  (b) In the event any  action,  suit or  proceeding  is brought
         against the Indemnified Persons, with respect to which the Indemnifying
         Persons may have liability under the indemnity  agreement  contained in
         Section 8.2 hereof,  the action,  suit or  proceeding  shall,  upon the
         written  agreement of the Indemnifying  Persons that they are obligated
         to indemnify  under the  indemnity  agreement  contained in Section 8.2
         hereof, be defended  (including all proceedings on appeal or for review
         which  counsel  for  the  defendant  shall  deem  appropriate)  by  the
         Indemnifying  Persons.  The Indemnified Persons shall have the right to
         employ  its or their own  counsel  in any such  case,  but the fees and
         expenses of such  counsel  shall be at the expense of such  Indemnified
         Persons  unless  (i) the  employment  of such  counsel  shall have been
         authorized by the  Indemnifying  Persons in connection with the defense
         of such action, suit or proceeding, (ii) the Indemnifying Persons shall
         not  have  agreed,  promptly  after  the  notice  to them  provided  in
         subsection  (a) above,  that they are obligated to indemnify  under the
         indemnity  agreement  contained  in  Section  8.2  hereof or (iii) such
         Indemnified  Person shall have  reasonably  concluded that such action,
         suit or proceeding  involves to a significant extent matters beyond the
         scope of the indemnity  agreement  contained in Section 8.2 hereof,  or
         that  there  may be  defenses  available  to it  (or  them)  which  are
         different  from or  additional to those  available to the  Indemnifying
         Persons, in any of which events the Indemnifying Persons shall not have
         the right to direct the defense of such action,  suit or  proceeding on
         behalf of the  Indemnified  Persons  and that  portion of such fees and
         expenses reasonably


                                       -9-
<PAGE>
         related to matters  covered by the  indemnity  agreement  contained  in
         Section  8.2 hereof  shall be borne by the  Indemnifying  Persons.  The
         Indemnified  Persons shall be kept fully informed of such action,  suit
         or  proceeding  at  all  stages  thereof  whether  or not  they  are so
         represented.  The  Indemnifying  Persons  shall make  available  to the
         Indemnified  Persons and their  attorneys and accountants all books and
         records of the  Indemnifying  Persons  relating to such  proceedings or
         litigation  and the parties  hereto  agree to render to each other such
         assistance  as they may  reasonably  require  of each other in order to
         ensure the  proper and  adequate  defense of any such  action,  suit or
         proceeding.

                  (c) The Indemnifying  Persons shall not make any settlement of
         any claims without the written consent of the Indemnified Persons.

         8.4 Survival.  All  representations  and  warranties  contained in this
Agreement shall survive the Closing hereunder until the second  anniversary (the
"Survival  Date") of the date  hereof,  at which time such  representations  and
warranties shall expire and be terminated and extinguished.

         8.5 Remedies Cumulative. The remedies provided for in this Article VIII
shall be cumulative and shall not preclude assertion by the Indemnified  Persons
of  any  other  rights  or  the  seeking  of  any  other  remedies  against  the
Indemnifying Persons.

                                   ARTICLE IX
                       AMENDMENT, MODIFICATION AND WAIVER

         This  Agreement  shall  not be  altered  or  otherwise  amended  except
pursuant  to an  instrument  in writing  signed by each of the  parties  hereto,
except that any party to this Agreement may waive any  obligation  owed to it by
another party under this  Agreement.  The waiver by any party hereto of a breach
of any  provisions  of this  Agreement  shall not operate or be  construed  as a
waiver of any subsequent breach.

                                    ARTICLE X
                                  MISCELLANEOUS

         10.1 Bulk Sales  Compliance.  Subject to Section 8.2(d),  the Purchaser
hereby waives  compliance  by the Seller with the  provisions of the "bulk sales
laws" (i.e., Article 6 of the Uniform Commercial Code) of any state which may be
applicable to the transactions contemplated hereby.

         10.2 Entire  Agreement.  This  Agreement and the Exhibits and Schedules
attached hereto contain the entire  agreement among the Purchaser and the Seller
with respect to the  transactions  contemplated  hereby and  supersede all prior
agreements or understandings among the parties with respect thereto.


                                      -10-
<PAGE>
         10.3 Descriptive Headings. Descriptive headings are for convenience
only and shall not control or affect the meaning or construction of any
provision of this Agreement.

         10.4  Counterparts.  This  Agreement  may be  executed in any number of
counterparts, and each such counterpart hereof shall be deemed to be an original
instrument,  but  all  such  counterparts  together  shall  constitute  but  one
agreement.

         10.5 Governing Law. This Agreement shall be governed by and construed
in accordance with the laws of the State of Delaware.

         10.6  Benefits  of  Agreements.  All the terms and  provisions  of this
Agreement  shall be binding upon and inure to the benefit of the parties  hereto
and their respective  successors and assigns.  Anything  contained herein to the
contrary  notwithstanding,  this Agreement  shall not be assignable by any party
hereto without the consent of the other party hereto.

         IN WITNESS WHEREOF, each of the parties has caused this Agreement to be
executed on its behalf as of the day and year first above written.

                                PATHNET, INC.


                                By: /s/ Mary McDermott
                                   -------------------------------------
                                Name: Mary McDermott
                                Title: Senior Vice President, General Counsel
                                        and Secretary


                                PATHNET TELECOMMUNICATIONS, INC.


                                By: /s/ Mary McDermott
                                   -------------------------------------
                                Name: Mary McDermott
                                Title: Senior Vice President, General Counsel
                                        and Secretary



                                      -11-
<PAGE>
                                                                       EXHIBIT A


                                LICENSE OF MARKS

                  WHEREAS,  Pathnet, Inc., a Delaware corporation having offices
at 1015 31st Street, N.W.,  Washington,  D.C., 20007 ("Licensor"),  has adopted,
used and is using trademarks, service marks, logos and designs including without
limitation the "A NETWORK OF OPPORTUNITIES"  and "PATHNET" service marks and the
Pathnet logo (all such  trademarks,  service  marks,  logos and designs shall be
collectively referred to herein as the "Marks"); and

                  WHEREAS, Pathnet Telecommunications, Inc., a Delaware
corporation having offices at 1015 31st Street, N.W., Washington, D.C., 20007
("Licensee"), is desirous of a license to use the Marks;

                  NOW, THEREFORE,  for good and valuable consideration,  receipt
of which is hereby acknowledged, the parties hereto agree as follows:

         1. License. Licensor does hereby grant to Licensee the perpetual,
non-exclusive right and license to use the Marks on a royalty-free basis in
connection with Licensee's telecommunications business; provided, however, that
Licensee shall retain the right to use the Marks.

         2.  Ownership  of Marks.  Licensee  acknowledges  and  agrees  that (a)
Licensor  is the owner of the entire  right,  title and  interest  in and to the
Marks and the Marks, or any form or embodiment  thereof (as well as the goodwill
now or  hereafter  attached to the same) are the property of and all use thereof
shall inure to the benefit of Licensor, and (b) Licensee shall have no rights to
the Marks other than those set forth in this License of Marks.

         3. Approvals/Quality Control. Licensee shall, upon request of Licensor,
submit  representative  samples  of  Licensee's  use of the  Marks to  Licensor,
without charge to Licensor, and Licensor shall have a period of ten (10) days to
notify Licensee of their acceptance or rejection.

         4.  Representations,  Warranties  and  Covenants of Licensor.  Licensor
represents  and  warrants  that it is the owner of the Marks and the  registrant
therefor, that Licensor has the full power and authority to license the right to
use the Marks,  that  Licensor has not entered into any  agreements  in conflict
with this License of Marks, and that there are no actions,  suits or proceedings
pending or, to Licensor's knowledge, threatened against Licensor with respect to
the Marks.  Licensor agrees to take all such further actions, and to execute any
and all such further documents and instruments, as may be necessary or desirable
to confirm the license executed hereby.

         5. Assignment. Neither party may assign any or all of its rights or
delegate any of its duties under this Agreement without the consent of the other
party, provided,


                                      -12-
<PAGE>
that either party hereto may assign its rights, but not its obligations,  to any
Affiliate  without  the  consent of the other  party.  For the  purposes of this
Section 5, an  "Affiliate"  of a party shall mean a subsidiary  of such party or
other entity under common ownership or control.

                  IN  WITNESS  WHEREOF,  this  LICENSE  OF  MARKS  is  made  and
effective as of the 30th of March, 2000.



                                       PATHNET, INC.


                                       By: ___________________________________
                                      Name:
                                     Title:


                                       PATHNET TELECOMMUNICATIONS, INC.


                                       By: ___________________________________
                                      Name:
                                     Title:


                                      -13-
<PAGE>
                                                                       Exhibit B

                                     FORM OF
                                 PROMISSORY NOTE

     $70,000,000.00                                               March 30, 2000


         FOR VALUE  RECEIVED,  PATHNET  TELECOMMUNICATIONS,  INC., a corporation
duly  organized  under  the laws of the  State of  Delaware  (the  "Purchaser"),
promises to pay to Pathnet,  Inc., a Delaware corporation,  at 1015 31st Street,
Washington,  DC 20007  ("Seller"),  or at such other place as the holder of this
Note may from time to time designate in writing, the principal amount of SEVENTY
MILLION  AND NO/100  DOLLARS  ($70,000,000.00),  together  with  interest on the
unpaid  principal  amount  of this Note  computed  from the date of  Closing  as
defined  in  the  Assignment  and  Acceptance  Agreement  (the  "Assignment  and
Acceptance")  by and between  Purchaser  and Seller,  dated the date hereof,  as
amended from time to time, until the entire indebtedness is paid, at the rate of
twelve and one quarter percent (12-1/4%) per annum. The principal amount of this
Note shall be due and payable on March 31, 2010. Accrued interest  calculated on
the outstanding  principal  amount as described above shall be payable yearly on
the last day of each year  commencing with the year ended December 31, 2000. All
payments  hereunder  shall be made in  lawful  money  of the  United  States  of
America.

         The unpaid  principal amount of this Note may be prepaid in whole or in
part at any time.

         The entire  unpaid  principal  amount of this Note or any  extension or
renewal hereof,  together with accrued interest and all charges owing under this
Note or the Assignment and Acceptance,  shall immediately become due and payable
at the  option of the holder of this Note,  without  demand or notice,  upon the
occurrence of any of the following Events of Default:

         (a) Purchaser  fails to pay the principal  amount of this Note when the
same  becomes  due and  payable  (whether  on the date on which  such  principal
becomes due or upon acceleration or otherwise); or

         (b)  Purchaser  fails to pay any interest when the same becomes due and
payable  hereunder  and such failure to pay continues for ten (10) business days
after the date on which such payment of interest was due.

         If this Note, after maturity,  whether by acceleration or otherwise, is
placed in the hands of an attorney  for  collection,  whether suit is brought on
the same or not,  Purchaser  shall pay to the holder of this Note all attorneys'
fees as are incurred for the purposes of collection hereof.


                                      -14-
<PAGE>
         Each  Obligor  under this Note  (which  term shall  include all makers,
guarantors,  endorsers and other persons assuming  obligations  pursuant to this
Note) hereby waives presentment,  protest,  demand, notice of dishonor,  and all
other  notices,  and all defenses and pleas on the grounds of any  extensions of
the time of payments or the due dates of this Note, in whole or in part,  before
or after maturity, with or without notice. No renewal or extension of this Note,
no release or surrender of any  collateral  given as security for this Note,  no
release  of any  Obligor,  and no  delay  in  enforcement  of  this  Note  or in
exercising  any right or power  hereunder,  shall  affect the  liability  of any
Obligor.

         This  Note  may not be  changed  orally,  but only by an  agreement  in
writing  which is signed by the party  against whom  enforcement  of any waiver,
change, modification or discharge is sought.

         IN WITNESS WHEREOF,  Purchaser has caused this Note to be duly executed
on its behalf as of the date set forth at the beginning of this Note, as the act
and deed of Purchaser.


                                    PATHNET TELECOMMUNICATIONS, INC.


                                    By:     ____________________________________
                                            Name:
                                            Title:



                                      -15-


                                                                   Exhibit 10.11

                       ASSIGNMENT AND ACCEPTANCE AGREEMENT

         THIS ASSIGNMENT  AND  ACCEPTANCE  AGREEMENT (this  "Agreement"),  dated
March 30, 2000, is by and between Pathnet Fiber Optics,  LLC, a Delaware limited
liability  corporation (the "Seller") and Pathnet,  Inc., a Delaware corporation
(the "Purchaser").

                                   WITNESSETH:

         WHEREAS,  Seller  currently  holds  certain  fiber optic  cable  assets
purchased  pursuant  to the  Amended and  Restated  Fiber  Optic Cable  Purchase
Agreement between Seller and Lucent  Technologies, Inc., dated October 14, 1999,
as  amended  by  that  certain   Amendment  No.1,   between  Seller  and  Lucent
Technologies, Inc., dated February 24, 2000 (the "Lucent Agreement");

         WHEREAS,  Purchaser  desires to purchase,  and Seller  desires to sell,
such assets,  and, as part of such purchase and sale,  Seller desires to assign,
and the Purchaser  desires to assume,  all of the  obligations  and  liabilities
relating to such assets,  subject,  in each case, to the  exemptions,  terms and
conditions set forth herein;

         NOW  THEREFORE,  in  consideration  of  the  premises  and  the  mutual
representations,  warranties and covenants and agreements hereinafter set forth,
and upon the terms and subject to the conditions  hereinafter set forth,  Seller
and Purchaser hereby agree as follows:

                                    ARTICLE I
                                   DEFINITIONS

         1.1 Certain Definitions. As used in this Agreement, the following terms
shall have the respective  meanings set forth below (such meanings to be equally
applicable to both the singular and the plural forms of the terms defined).

         (a) Affiliate: As defined in Section 8.1.

         (b) Agreement: As defined in the preamble.

         (c) Closing: As defined in Article VII.

         (d)   Colonial   Contribution   Agreement:   Shall  mean  that  certain
Contribution  Agreement,  dated as of  November 2, 1999,  by and among PTI,  the
Purchaser and Colonial Pipeline Company, a Delaware and Virginia corporation.

         (e) Contribution  Agreements:  Shall mean (i) that certain Contribution
Agreement, dated as of November 2, 1999, by and among PTI, the Purchaser and The
Burlington Northern Santa Fe Railway Company, a Delaware corporation,  (ii) that
certain Contribution Agreement,  dated as of November 2, 1999, by and among PTI,
the Purchaser and CSX Transportation,  Inc., a Virginia corporation,  (iii) that
certain Contribution Agreement,  dated as of November 2, 1999, by and among PTI,
the

                                       -1-
<PAGE>
Purchaser and the preferred  stockholders  of the  Purchaser,  (iv) that certain
Contribution  Agreement,  dated as of  November 2, 1999,  by and among PTI,  the
Purchaser and certain common stockholders of the Purchaser, and (v) that certain
Contribution Agreement,  dated November 4, 1999, by and among PTI, the Purchaser
and David Schaeffer.

         (f) Contribution Agreement Closing: As defined in Section 6.1(d).

         (g) Fiber Assets: As defined in Section 2.1.

         (h) Indemnified Persons: As defined in Section 8.1

         (i) Indemnifying Persons: As defined in Section 8.1.

         (j) Lucent Agreement: As defined in the preamble.

         (k) PTI: Shall mean Pathnet Telecommunications, Inc., a Delaware
corporation.

         (l) Purchaser: As defined in the preamble.

         (m) Purchase Price: As defined in Section 4.1.

         (n) Seller: As defined in the preamble.

         (o) Survival Date: As defined in Section 8.4.

                                   ARTICLE II
                              ASSETS TO BE ACQUIRED

         2.1 Acquisition and Transfer of Assets.  At the Closing (as hereinafter
defined),  upon the terms and subject to the conditions  hereinafter  set forth,
Seller  shall  sell,  assign,  transfer,  convey and deliver to  Purchaser,  and
Purchaser  shall purchase,  acquire and accept from Seller (i) all right,  title
and interest of Seller in and to all the fiber optic cable  purchased  under the
Lucent  Agreement,  and (ii) all  rights of Seller  in, to and under  the Lucent
Agreement (collectively referred to herein as the "Fiber Assets").

         2.2 Instrument of Conveyance and Transfer,  Etc. At the Closing, Seller
shall deliver (or cause to be delivered) to Purchaser such deeds, bills of sale,
endorsements,  assignments  and other  instruments  of transfer,  conveyance and
assignment as shall be necessary to transfer, convey and assign the Fiber Assets
to the Purchaser.  Simultaneously therewith,  Seller shall take all steps as may
be required to put the Purchaser in possession of the Fiber Assets.

         2.3      Right of Endorsement, Etc. Effective upon the Closing, Seller
hereby constitutes and appoints Purchaser, its successors and assigns, the true
and lawful attorney of the Seller with full power of substitution, in the name
of Purchaser, or the

                                       -2-
<PAGE>
name of Seller,  on behalf of and for the benefit of  Purchaser,  to collect all
accounts and notes  receivable and other items being  transferred,  conveyed and
assigned to Purchaser as provided herein, to endorse, without recourse,  checks,
notes and other  instruments in the name of Seller,  to institute and prosecute,
in the name of Seller or otherwise,  all  proceedings  which  Purchaser may deem
proper in order to collect,  assert or enforce any claim,  right or title of any
kind in or to the Fiber Assets,  to defend and  compromise  any and all actions,
suits or proceedings  in respect of any of the Fiber Assets,  and to do all such
acts and things in relation  thereto as  Purchaser  may deem  advisable.  Seller
agrees  that the  foregoing  powers are coupled  with an  interest  and shall be
irrevocable  by Seller,  directly or indirectly,  whether by the  dissolution of
Seller or in any manner or for any reason.

         2.4 Further Assurances; Etc. Seller shall pay to Purchaser promptly any
amounts  which shall be received by Seller  after the Closing  which are, or are
received in connection with,  Fiber Assets.  Seller at any time and from time to
time after the  Closing,  upon the  request of  Purchaser  and at the expense of
Seller, shall do, execute,  acknowledge,  deliver and file, or shall cause to be
done, executed, acknowledged,  delivered or filed, all such further acts, deeds,
transfers,  conveyances,  assignments  or  assurance  as may be required for the
better  transferring,  conveying,  assigning and assuring to  Purchaser,  or for
aiding  and  assisting  in  the  collection  of or  reducing  to  possession  by
Purchaser, any of the assets, properties or rights being purchased hereunder.

         2.5 Assignment of Contracts,  Rights,  Etc. Anything  contained in this
Agreement to the contrary  notwithstanding,  this Agreement shall not constitute
an  agreement  or  attempted  agreement  to  transfer,  sublease  or assign  any
contract,  license, lease, sales order, purchase order or other agreement or any
claim or right of any benefit arising  thereunder or resulting  therefrom or any
permit or operating authority if an attempted  transfer,  sublease or assignment
thereof,  without the consent of any other party  thereto,  would  constitute  a
breach thereof or in any way affect the rights of Purchaser  thereunder.  Seller
and Purchaser shall use their respective best efforts,  and shall cooperate with
each other, to obtain the consent of such third party to any of the foregoing to
the  assignment  or  transfer  thereof to  Purchaser  in all cases in which such
consent is required for assignment or transfer. If such consent is not obtained,
Seller shall cooperate with Purchaser in any arrangements necessary or desirable
to provide for Purchaser the benefits thereunder, including without, limitation,
enforcement for the benefit of Purchaser of any and all rights of Seller thereof
against the other party thereto  arising out of the  cancellation  by such other
party or otherwise.

                                   ARTICLE III
                            ASSUMPTION OF LIABILITIES

         On  the  terms  and  subject  to  the  conditions  of  this  Agreement,
simultaneously with the transfer,  conveyance and assignment to Purchaser of the
Fiber Assets,  Purchaser  shall assume all of the  liabilities  and  obligations
relating to the Fiber Assets as such  liabilities  and  obligations  shall exist
immediately prior to the Closing.

                                       -3-
<PAGE>
                                   ARTICLE IV
                           PURCHASE PRICE OF PURCHASED
                               ASSETS; ALLOCATION

         4.1 Purchase  Price.  The aggregate  purchase  price to be paid for the
Fiber  Assets  shall  be  equal  to all  purchase  orders  submitted  to  Lucent
Technologies,  Inc.  under the  Lucent  One  Million  Dollars  ($1,000,000))(the
"Purchase  Price").  At  the  Closing,  against  delivery  to the  Purchaser  of
appropriate  instruments of transfer,  conveyance and assignment with respect to
the Fiber Assets,  the Purchaser shall deliver to the Seller,  a Promissory Note
in the form attached hereto as Exhibit A in the principal amount of $1,000,000.

                                    ARTICLE V
                         REPRESENTATIONS AND WARRANTIES

         5.1      Representations and Warranties of the Seller. The Seller
hereby represents and warrants to the Purchaser as follows:

                  (a) Organization,  Standing and Power. The Seller is a limited
         liability company duly organized, validly existing and in good standing
         under the laws of the State of Delaware and has all requisite corporate
         power and  authority to own,  lease and operate its  properties  and to
         carry on its  business as now being  conducted;  and the Seller has all
         requisite  corporate  power  and  authority  and  to  enter  into  this
         Agreement,  to perform its obligations  hereunder and to consummate the
         transactions  contemplated hereby. Seller is duly qualified and in good
         standing  to  do  business   in  every   jurisdiction   in  which  such
         qualification is necessary.

                  (b)  Authority.  The execution and delivery of this  Agreement
         and the consummation of the transactions  contemplated hereby have been
         duly and validly  authorized by all necessary  corporate  action and on
         the part of the  Seller  and this  Agreement  constitutes  a valid  and
         binding  obligation of the Seller  enforceable  in accordance  with its
         terms.  Neither  the  execution,   delivery  and  performance  of  this
         Agreement  nor  the  consummation  by the  Seller  of the  transactions
         contemplated  hereby  nor  compliance  by the  Seller  with  any of the
         provisions  hereof will (i) conflict  with or result in a breach of any
         provision of the organizational  documents of the Seller,  (ii) cause a
         default  (or give rise to any  right of  termination,  cancellation  or
         acceleration)  under any of the terms,  conditions or provisions of any
         note, bond, lease, mortgage,  indenture, license or other instrument or
         agreement  to which the Seller,  or by which the Seller,  or any of its
         properties  or  assets  is or may be bound or  (iii)  violate  any law,
         statute,  rule or regulation or order,  writ,  judgment,  injunction or
         decree applicable to the Seller, or any of its properties or assets.

                                       -4-
<PAGE>
         5.2      Representations and Warranties of the Purchaser. The Purchaser
hereby represents and warrants to the Seller as follows:

                  (a)  Organization,  Standing  and Power.  The  Purchaser  is a
         corporation duly organized, validly existing and in good standing under
         the laws of the State of Delaware and has all requisite corporate power
         and authority to own, lease and operate its properties, to carry on its
         business  as now being  conducted,  to enter  into this  Agreement,  to
         perform its  obligations  hereunder and to consummate the  transactions
         contemplated hereby.

                  (b)  Authority.  The execution and delivery of this  Agreement
         and the consummation of the transactions  contemplated hereby have been
         duly and validly  authorized by all necessary  corporate  action on the
         part of the  Purchaser  and  this  Agreement  constitutes  a valid  and
         binding obligation of the Purchaser, enforceable in accordance with its
         terms.  Neither  the  execution,   delivery  and  performance  of  this
         Agreement nor the consummation of the transactions  contemplated hereby
         nor compliance by the Purchaser with any of the provisions  hereof will
         (i)  conflict  with or  result  in a  breach  of any  provision  of its
         Certificate of Incorporation  or Bylaws,  (ii) cause a default (or give
         rise to any right of termination,  cancellation or acceleration)  under
         any of the terms,  conditions or provisions of any note,  bond,  lease,
         mortgage,  indenture, license or other instrument or agreement to which
         the  Purchaser is a party,  or by which it or its  properties or assets
         may be bound, or (iii) violate any law, statute,  rule or regulation or
         order, writ, injunction or decree applicable to the Purchaser or any of
         its properties or assets.


                                   ARTICLE VI
                              CONDITIONS OF CLOSING

         6.1 Conditions of Obligations of the Purchaser.  The obligations of the
Purchaser  to perform  this  Agreement  are subject to the  satisfaction  of the
following conditions unless waived by the Purchaser:

                  (a)  Representations  and Warranties.  The representations and
         warranties  of the Seller set forth in Section 5.1 hereof shall be true
         and correct in all material  respects as of the date of this  Agreement
         and as of the Closing Date (as  hereinafter  defined) as though made on
         and as of the Closing Date.

                  (b)  Authorization.  All action  necessary to  authorized  the
         execution, delivery and performance of this Agreement by the Seller and
         the  consummation of the  transactions  contemplated  hereby shall have
         been duly and validly taken.

                  (c)      Instruments of Transfer, Conveyance and Assignment.
         The Purchaser shall have received duly executed instruments of
         transfer, conveyance and assignment as contemplated by Section 2.2
         hereof.

                                       -5-
<PAGE>
                  (d) Closing  under  Contribution  Agreements.  The Closing (as
         defined in the  Contribution  Agreements)  and the Initial  Closing (as
         defined in the Colonial  Contribution  Agreement)  shall have  occurred
         (together, such occurrences, the "Contribution Agreement Closing").

         6.2  Conditions of Obligations  of the Seller.  The  obligations of the
Seller  to  perform  this  Agreement  are  subject  to the  satisfaction  of the
following conditions unless waived by the Seller:

                  (a)  Representations  and Warranties.  The representations and
         warranties  of the  Purchaser  set forth in Section 5.2 hereof shall be
         true  and  correct  in all  material  respects  as of the  date of this
         Agreement  and as of the  Closing  Date as though made on and as of the
         Closing Date.

                  (b)  Authorization.  All action  necessary  to  authorize  the
         execution,  delivery and performance of this Agreement by the Purchaser
         and the consummation of the transactions contemplated hereby shall have
         been duly and validly taken by the Board of Directors of the Purchaser.

                  (c)      Closing under Contribution Agreements. The
         Contribution Agreement Closing shall have occurred.

                                   ARTICLE VII
                                     CLOSING

         The closing (the "Closing") for the  consummation  of the  transactions
contemplated  by  this  Agreement  shall  take  place   immediately   after  the
Contribution Agreement Closing shall have occurred.


                                  ARTICLE VIII
                                 INDEMNIFICATION

         8.1     Definitions. As used in this Article VIII, the following terms
shall have the following respective meanings:

                  (a)  "Affiliate"  shall mean a person or entity that directly,
         or  indirectly  through  one or more  intermediaries,  controls,  or is
         controlled  by, or is under common  control  with,  any other person or
         entity.

                  (b)      "Indemnified Persons" shall mean and include the
         Purchaser, all Affiliates of the Purchaser, and the successors and
         assigns of the foregoing; and

                  (c)      "Indemnifying Persons" shall mean the Seller and its
         successors and assigns.


                                       -6-
<PAGE>
         8.2  Indemnification.  The  Indemnifying  Persons  shall,  jointly  and
severally,  indemnify  and  save  the  Indemnified  Persons,  and  each of them,
harmless from, against, for and in respect of the following:

                  (a)      any and all liabilities and obligations of the Seller
         not assumed by the Purchaser pursuant to this Agreement;

                  (b)  any  liabilities  and  obligations  of  the  Indemnifying
         Persons for fees, costs and expenses  relating to or arising out of the
         execution,   delivery  and   performance  of  this  Agreement  and  the
         consummation  of  the  transactions   contemplated  hereby,  including,
         without  limitation,  legal and accounting  fees and expenses and taxes
         incurred by the Indemnifying Persons;

                  (c) any damages,  losses,  obligations,  liabilities,  claims,
         actions or causes of action  sustained  or suffered by the  Indemnified
         Persons,   or  any  of  them,   and  arising   from  a  breach  of  any
         representation,  warranty,  covenant or agreement  of the  Indemnifying
         Persons  contained  in or made  pursuant  to this  Agreement  or in any
         certificate,  instrument or agreement  delivered by any of such parties
         pursuant  hereto or in connection  with the  transactions  contemplated
         hereby, or any facts or circumstances constituting such breach;

                  (d) all damages,  losses,  obligations,  liabilities,  claims,
         actions or causes of action  sustained  or suffered by the  Indemnified
         Persons,  or any of them, as a result of  non-compliance  by the Seller
         with the  provisions of the "bulk sales laws" of any state which may be
         applicable to the transactions contemplated hereby;

                  (e) all damages,  losses,  obligations,  liabilities,  claims,
         actions or causes of action  sustained  or suffered by the  Indemnified
         Persons,  or any of them,  as a result of the  failure  to  obtain  any
         consent or provide  any benefit  under any  contract,  license,  lease,
         sales order, purchase order or other agreement, claim, right, permit or
         operating authority; and

                  (f) all  reasonable  costs and  expenses  (including,  without
         limitation reasonable  attorney's,  accountants' and other professional
         fees and expenses) incurred by the Indemnified Persons, or any of them,
         in connection with any action, suit, proceeding,  demand, assessment or
         judgment  incident  to any of the  matters  indemnified  against  under
         Section 8.2(a),  Section 8.2(b),  Section 8.2 (c),  Section 8.2 (d) and
         Section 8.2 (e) hereof.

No  claim,  demand,  suit or  cause  of  action  shall be  brought  against  the
Indemnifying   Persons  under  or  pursuant  to  this  Section  8.2  unless  the
Indemnified  Persons, or any of them, at any time prior to the Survival Date (as
defined in Section 8.4 hereof),  give the  Indemnifying  Persons written notice,
with reasonable specificity, of the existence of any such claim, demand, suit or
cause of action under this Agreement.  Upon the giving of such written notice as
aforesaid, the Indemnified Persons, or any of them, shall have the

                                       -7-
<PAGE>
right to commence legal  proceedings  within one year subsequent to the Survival
Date for the enforcement of its or their rights under this Agreement.

         8.3      Third Party Claims. The obligations and liabilities of the
Indemnifying Persons hereunder with respect to claims resulting from the
assertion of liability by third parties shall be subject to the following terms
and conditions:

                  (a) The  Indemnified  Persons shall give prompt written notice
         to the  Indemnifying  Persons of any  assertion of liability by a third
         party  which  might  give  rise to a claim by the  Indemnified  Persons
         against  the  Indemnified  Persons  based on the  indemnity  agreements
         contained  in Section 8.2 hereof,  stating the nature and basis of said
         assertion and the amount thereof, to the extent known.

                  (b) In the event any  action,  suit or  proceeding  is brought
         against the Indemnified Persons, with respect to which the Indemnifying
         Persons may have liability under the indemnity  agreement  contained in
         Section 8.2 hereof,  the action,  suit or  proceeding  shall,  upon the
         written  agreement of the Indemnifying  Persons that they are obligated
         to indemnify  under the  indemnity  agreement  contained in Section 8.2
         hereof, be defended  (including all proceedings on appeal or for review
         which  counsel  for  the  defendant  shall  deem  appropriate)  by  the
         Indemnifying  Persons.  The Indemnified Persons shall have the right to
         employ  its or their own  counsel  in any such  case,  but the fees and
         expenses of such  counsel  shall be at the expense of such  Indemnified
         Persons  unless  (i) the  employment  of such  counsel  shall have been
         authorized by the  Indemnifying  Persons in connection with the defense
         of such action, suit or proceeding, (ii) the Indemnifying Persons shall
         not  have  agreed,  promptly  after  the  notice  to them  provided  in
         subsection  (a) above,  that they are obligated to indemnify  under the
         indemnity  agreement  contained  in  Section  8.2  hereof or (iii) such
         Indemnified  Person shall have  reasonably  concluded that such action,
         suit or proceeding  involves to a significant extent matters beyond the
         scope of the indemnity  agreement  contained in Section 8.2 hereof,  or
         that  there  may be  defenses  available  to it  (or  them)  which  are
         different  from or  additional to those  available to the  Indemnifying
         Persons, in any of which events the Indemnifying Persons shall not have
         the right to direct the defense of such action,  suit or  proceeding on
         behalf of the  Indemnified  Persons  and that  portion of such fees and
         expenses  reasonably  related  to  matters  covered  by  the  indemnity
         agreement  contained  in  Section  8.2  hereof  shall  be  borne by the
         Indemnifying  Persons.  The  Indemnified  Persons  shall be kept  fully
         informed  of such  action,  suit or  proceeding  at all stages  thereof
         whether or not they are so represented.  The Indemnifying Persons shall
         make  available  to the  Indemnified  Persons and their  attorneys  and
         accountants all books and records of the Indemnifying  Persons relating
         to such  proceedings  or  litigation  and the parties  hereto  agree to
         render to each other such assistance as they may reasonably  require of
         each other in order to ensure the  proper and  adequate  defense of any
         such action, suit or proceeding.

                                       -8-
<PAGE>
                  (c)      The Indemnifying Persons shall not make any
         settlement of any claims without the written consent of the Indemnified
         Persons.

         8.4 Survival.  All  representations  and  warranties  contained in this
Agreement shall survive the Closing hereunder until the second  anniversary (the
"Survival  Date") of the date  hereof,  at which time such  representations  and
warranties shall expire and be terminated and extinguished.

         8.5 Remedies Cumulative. The remedies provided for in this Article VIII
shall be cumulative and shall not preclude assertion by the Indemnified  Persons
of  any  other  rights  or  the  seeking  of  any  other  remedies  against  the
Indemnifying Persons.

                                   ARTICLE IX
                       AMENDMENT, MODIFICATION AND WAIVER

         This  Agreement  shall  not be  altered  or  otherwise  amended  except
pursuant  to an  instrument  in writing  signed by each of the  parties  hereto,
except that any party to this Agreement may waive any  obligation  owed to it by
another party under this  Agreement.  The waiver by any party hereto of a breach
of any  provisions  of this  Agreement  shall not operate or be  construed  as a
waiver of any subsequent breach.

                                    ARTICLE X
                                  MISCELLANEOUS

         10.1 Bulk Sales  Compliance.  Subject to Section 8.2(d),  the Purchaser
hereby waives  compliance  by the Seller with the  provisions of the "bulk sales
laws" (i.e., Article 6 of the Uniform Commercial Code) of any state which may be
applicable to the transactions contemplated hereby.

         10.2 Entire  Agreement.  This  Agreement and the Exhibits and Schedules
attached hereto contain the entire  agreement among the Purchaser and the Seller
with respect to the  transactions  contemplated  hereby and  supersede all prior
agreements or understandings among the parties with respect thereto.

         10.3     Descriptive Headings. Descriptive headings are for convenience
only and shall not control or affect the meaning or construction of any
provision of this Agreement.

         10.4  Counterparts.  This  Agreement  may be  executed in any number of
counterparts, and each such counterpart hereof shall be deemed to be an original
instrument,  but  all  such  counterparts  together  shall  constitute  but  one
agreement.

         10.5     Governing Law. This Agreement shall be governed by and
construed in accordance with the laws of the State of Delaware.

                                       -9-
<PAGE>
         10.6  Benefits  of  Agreements.  All the terms and  provisions  of this
Agreement  shall be binding upon and inure to the benefit of the parties  hereto
and their respective  successors and assigns.  Anything  contained herein to the
contrary  notwithstanding,  this Agreement  shall not be assignable by any party
hereto without the consent of the other party hereto.

                                      -10-
<PAGE>
         IN WITNESS WHEREOF, each of the parties has caused this Agreement to be
executed on its behalf as of the day and year first above written.

                                PATHNET, INC.


                                 By: /s/ Mary McDermott
                                   -------------------------------------
                                Name: Mary McDermott
                                Title: Senior Vice President, General Counsel
                                        and Secretary


                                PATHNET TELECOMMUNICATIONS, INC.


                                By: /s/ Mary McDermott
                                   -------------------------------------
                                Name: Mary McDermott
                                Title: Senior Vice President, General Counsel
                                        and Secretary



                                      -11-
<PAGE>
                                                                       Exhibit A
                                     FORM OF
                                 PROMISSORY NOTE

$1,000,000                                                        March 30, 2000


         FOR VALUE RECEIVED,  PATHNET,  INC., a corporation duly organized under
the laws of the State of Delaware (the "Purchaser"),  promises to pay to Pathnet
Fiber Optics,  LLC, a Delaware limited liability  company,  at 1015 31st Street,
Washington,  DC 20007  ("Seller"),  or at such other place as the holder of this
Note may from time to time  designate in writing,  the  principal  amount of ONE
MILLION  DOLLARS  ($1,000,000),  together with interest on the unpaid  principal
amount  of this  Note  computed  from  the date of  Closing  as  defined  in the
Assignment and Acceptance  Agreement (the "Assignment and  Acceptance"),  by and
between  Purchaser  and Seller,  dated the date hereof,  as amended from time to
time,  until the  entire  indebtedness  is paid,  at the rate of twelve  and one
quarter percent  (12-1/4%) per annum. The principal amount of this Note shall be
due  and  payable  on  March  31,  2010.  Accrued  interest  calculated  on  the
outstanding  principal  amount as described above shall be payable yearly on the
last day of each year  commencing  with the year ended  December 31,  2000.  All
payments  hereunder  shall be made in  lawful  money  of the  United  States  of
America.

         The unpaid  principal amount of this Note may be prepaid in whole or in
part at any time.

         The entire  unpaid  principal  amount of this Note or any  extension or
renewal hereof,  together with accrued interest and all charges owing under this
Note or the Assignment and Acceptance,  shall immediately become due and payable
at the  option of the holder of this Note,  without  demand or notice,  upon the
occurrence of any of the following Events of Default:

         (a) Purchaser  fails to pay the principal  amount of this Note when the
same  becomes  due and  payable  (whether  on the date on which  such  principal
becomes due or upon acceleration or otherwise); or

         (b)  Purchaser  fails to pay any interest when the same becomes due and
payable  hereunder  and such failure to pay continues for ten (10) business days
after the date on which such payment of interest was due.

         If this Note, after maturity,  whether by acceleration or otherwise, is
placed in the hands of an attorney  for  collection,  whether suit is brought on
the same or not,  Purchaser  shall pay to the holder of this Note all attorneys'
fees as are incurred for the purposes of collection hereof.

         Each  Obligor  under this Note  (which  term shall  include all makers,
guarantors,  endorsers and other persons assuming  obligations  pursuant to this
Note) hereby waives

                                      -12-
<PAGE>
presentment, protest, demand, notice of dishonor, and all other notices, and all
defenses and pleas on the grounds of any  extensions  of the time of payments or
the due dates of this Note, in whole or in part, before or after maturity,  with
or without notice. No renewal or extension of this Note, no release or surrender
of any  collateral  given as security for this Note,  no release of any Obligor,
and no delay in  enforcement  of this Note or in  exercising  any right or power
hereunder, shall affect the liability of any Obligor.

         This  Note  may not be  changed  orally,  but only by an  agreement  in
writing  which is signed by the party  against whom  enforcement  of any waiver,
change, modification or discharge is sought.

         IN WITNESS WHEREOF,  Purchaser has caused this Note to be duly executed
on its behalf as of the date set forth at the beginning of this Note, as the act
and deed of Purchaser.


                               PATHNET, INC.


                               By:     ______________________________________
                                      Name:
                                     Title:




                                      -13-

                                                                   Exhibit 10.12


                                LICENSE OF MARKS

                  WHEREAS,  Pathnet, Inc., a Delaware corporation having offices
at 1015 31st Street, N.W.,  Washington,  D.C., 20007 ("Licensor"),  has adopted,
used and is using certain trademarks, service marks, logos and designs including
without  limitation the "A NETWORK OF OPPORTUNITIES" and "PATHNET" service marks
and the Pathnet  logo (all such  trademarks,  service  marks,  logos and designs
shall be collectively referred to herein as the "Marks"); and

                  WHEREAS,   Pathnet   Telecommunications,   Inc.,   a  Delaware
corporation having offices at 1015 31st Street,  N.W.,  Washington,  D.C., 20007
("Licensee"), is desirous of a license to use the Marks;

                  NOW, THEREFORE,  for good and valuable consideration,  receipt
of which is hereby acknowledged, the parties hereto agree as follows:

1. LICENSE. Licensor does hereby grant to Licensee the perpetual,  non-exclusive
right and license to use the Marks on a  royalty-free  basis in connection  with
Licensee's  telecommunications  business; PROVIDED, HOWEVER, that Licensor shall
retain the right to use the Marks.

2. OWNERSHIP OF MARKS. Licensee acknowledges and agrees that (a) Licensor is the
owner of the entire right, title and interest in and to the Marks and the Marks,
or any form or  embodiment  thereof (as well as the  goodwill  now or  hereafter
attached to the same) are the property of and all use thereof shall inure to the
benefit of Licensor,  and (b)  Licensee  shall have no rights to the Marks other
than those set forth in this License of Marks.

3. APPROVALS/QUALITY  CONTROL.  Licensee shall, upon request of Licensor, submit
representative  samples  of  Licensee's  use of the Marks to  Licensor,  without
charge to Licensor,  and Licensor shall have a period of ten (10) days to notify
Licensee of their acceptance or rejection.

4.  REPRESENTATIONS,  WARRANTIES AND COVENANTS OF LICENSOR.  Licensor represents
and warrants that it is the owner of the Marks and the registrant therefor, that
Licensor has the full power and authority to license the right to use the Marks,
that Licensor has not entered into any  agreements in conflict with this License
of Marks,  and that there are no actions,  suits or  proceedings  pending or, to
Licensor's  knowledge,  threatened  against  Licensor with respect to the Marks.
Licensor  agrees to take all such  further  actions,  and to execute any and all
such  further  documents  and  instruments,  as may be necessary or desirable to
confirm the license executed hereby.

5. ASSIGNMENT. Neither party may assign any or all of its rights or delegate any
of its duties  under this  Agreement  without  the  consent of the other  party,
provided,  that  either  party  hereto  may  assign  its  rights,  but  not  its
obligations,  to any Affiliate  without the consent of the other party.  For the
purposes of this Section 5, an "Affiliate" of a party shall mean a subsidiary of
such party or other entity under common ownership or control.

                  IN  WITNESS  WHEREOF,  this  LICENSE  OF  MARKS  is  made  and
effective as of the 30th of March, 2000.



                                PATHNET, INC.

                                By: /s/ Mary McDermott
                                   -------------------------------------
                                Name: Mary McDermott
                                Title: Senior Vice President, General Counsel
                                        and Secretary


                                PATHNET TELECOMMUNICATIONS, INC.


                                By: /s/ Mary McDermott
                                   -------------------------------------
                                Name: Mary McDermott
                                Title: Senior Vice President, General Counsel
                                        and Secretary



                                                                   Exhibit 10.13

                                 PROMISSORY NOTE

$70,000,000.00                                                    March 30, 2000


         FOR VALUE  RECEIVED,  PATHNET  TELECOMMUNICATIONS,  INC., a corporation
duly  organized  under  the laws of the  State of  Delaware  (the  "Purchaser"),
promises to pay to Pathnet,  Inc., a Delaware corporation,  at 1015 31st Street,
Washington,  DC 20007  ("Seller"),  or at such other place as the holder of this
Note may from time to time designate in writing, the principal amount of SEVENTY
MILLION  AND NO/100  DOLLARS  ($70,000,000.00),  together  with  interest on the
unpaid  principal  amount  of this Note  computed  from the date of  Closing  as
defined  in  the  Assignment  and  Acceptance  Agreement  (the  "Assignment  and
Acceptance")  by and between  Purchaser  and Seller,  dated the date hereof,  as
amended from time to time, until the entire indebtedness is paid, at the rate of
twelve and one quarter percent (12-1/4%) per annum. The principal amount of this
Note shall be due and payable on March 31, 2010. Accrued interest  calculated on
the outstanding  principal  amount as described above shall be payable yearly on
the last day of each year  commencing with the year ended December 31, 2000. All
payments  hereunder  shall be made in  lawful  money  of the  United  States  of
America.

         The unpaid  principal amount of this Note may be prepaid in whole or in
part at any time.

         The entire  unpaid  principal  amount of this Note or any  extension or
renewal hereof,  together with accrued interest and all charges owing under this
Note or the Assignment and Acceptance,  shall immediately become due and payable
at the  option of the holder of this Note,  without  demand or notice,  upon the
occurrence of any of the following Events of Default:

         (a) Purchaser  fails to pay the principal  amount of this Note when the
same  becomes  due and  payable  (whether  on the date on which  such  principal
becomes due or upon acceleration or otherwise); or

         (b)  Purchaser  fails to pay any interest when the same becomes due and
payable  hereunder  and such failure to pay continues for ten (10) business days
after the date on which such payment of interest was due.

         If this Note, after maturity,  whether by acceleration or otherwise, is
placed in the hands of an attorney  for  collection,  whether suit is brought on
the same or not,  Purchaser  shall pay to the holder of this Note all attorneys'
fees as are incurred for the purposes of collection hereof.


                                      -14-
<PAGE>
         Each  Obligor  under this Note  (which  term shall  include all makers,
guarantors,  endorsers and other persons assuming  obligations  pursuant to this
Note) hereby waives presentment,  protest,  demand, notice of dishonor,  and all
other  notices,  and all defenses and pleas on the grounds of any  extensions of
the time of payments or the due dates of this Note, in whole or in part,  before
or after maturity, with or without notice. No renewal or extension of this Note,
no release or surrender of any  collateral  given as security for this Note,  no
release  of any  Obligor,  and no  delay  in  enforcement  of  this  Note  or in
exercising  any right or power  hereunder,  shall  affect the  liability  of any
Obligor.

         This  Note  may not be  changed  orally,  but only by an  agreement  in
writing  which is signed by the party  against whom  enforcement  of any waiver,
change, modification or discharge is sought.

         IN WITNESS WHEREOF,  Purchaser has caused this Note to be duly executed
on its behalf as of the date set forth at the beginning of this Note, as the act
and deed of Purchaser.


                                PATHNET TELECOMMUNICATIONS, INC.


                                By: /s/ Mary McDermott
                                   -------------------------------------
                                Name: Mary McDermott
                                Title: Senior Vice President, General Counsel
                                        and Secretary




                                      -15-


                                                                   EXHIBIT 10.14


                                 PROMISSORY NOTE

$50,000,000.00                                                    March 30, 2000


         FOR VALUE  RECEIVED,  PATHNET  TELECOMMUNICATIONS,  INC., a corporation
duly  organized  under  the laws of the  State  of  Delaware  (the  "Borrower"),
promises to pay to Pathnet,  Inc., a Delaware corporation,  at 1015 31st Street,
N.W., Washington,  DC 20007 (the "Lender"), or at such other place as the holder
of this Note may from time to time designate in writing, the principal amount of
FIFTY MILLION AND NO/100 DOLLARS ($50,000,000.00), together with interest on the
unpaid  principal  amount  of this Note  computed  from the date of  Closing  as
defined in that  certain  Assignment  and  Acceptance  Agreement  by and between
Borrower and Lender,  dated the date hereof, as amended from time to time, until
the entire  indebtedness  is paid, at the rate of twelve and one quarter percent
(12-1/4%) per annum.  The principal amount of this Note shall be due and payable
on March 31, 2010.  Accrued  interest  calculated on the  outstanding  principal
amount as described  above shall be payable  yearly on the last day of each year
commencing  with the year ended December 31, 2000. All payments  hereunder shall
be made in lawful money of the United States of America.

         This Note may be prepaid at any time and from time to time, in whole or
in part,  without premium or penalty.  Any prepayment  shall be applied first to
any  accrued  and  unpaid  interest  and  then to  principal.  In the  event  of
prepayment of this Note in part only, a new Note for the unpaid  portion  hereof
shall be issued in the name of the  person or entity in whose  name this Note is
registered upon the cancellation hereof.

         The entire  unpaid  principal  amount of this Note or any  extension or
renewal hereof,  together with accrued interest and all charges owing under this
Note,  shall  immediately  become due and payable at the option of the holder of
this Note, without demand or notice, upon the occurrence of any of the following
Events of Default:

         (a) Borrower  fails to pay the  principal  amount of this Note when the
same  becomes  due and  payable  (whether  on the date on which  such  principal
becomes due or upon acceleration or otherwise); or

         (b) Borrower  fails to pay any  interest  when the same becomes due and
payable  hereunder  and such failure to pay continues for ten (10) business days
after the date on which such payment of interest was due.

         If this Note, after maturity,  whether by acceleration or otherwise, is
placed in the hands of an attorney  for  collection,  whether suit is brought on
the same or not,  Borrower  shall pay to the holder of this Note all  attorneys'
fees as are incurred for the purposes of collection hereof.

         Each  Obligor  under this Note  (which  term shall  include all makers,
guarantors,  endorsers and other persons assuming  obligations  pursuant to this
Note) hereby waives presentment,  protest,  demand, notice of dishonor,  and all
other  notices,  and all  defenses

<PAGE>

and  pleas on the  grounds  of any
extensions of the time of payments or the due dates of this Note, in whole or in
part, before or after maturity,  with or without notice. No renewal or extension
of this Note,  no release or surrender of any  collateral  given as security for
this Note, no release of any Obligor,  and no delay in  enforcement of this Note
or in exercising any right or power hereunder, shall affect the liability of any
Obligor.

         This  Note  may not be  changed  orally,  but only by an  agreement  in
writing  which is signed by the party  against whom  enforcement  of any waiver,
change,  modification or discharge is sought. This Note is made under, and shall
be governed by and  construed in accordance  with,  the laws of the State of New
York applicable to contracts made and to be performed entirely within such State
and without giving effect to choice of law principles of such State.

         IN WITNESS  WHEREOF,  Borrower has caused this Note to be duly executed
on its behalf as of the date set forth at the beginning of this Note, as the act
and deed of Borrower.


                                PATHNET TELECOMMUNICATIONS, INC.


                                By: /s/ Mary McDermott
                                   -------------------------------------
                                Name: Mary McDermott
                                Title: Senior Vice President, General Counsel
                                        and Secretary



                                        2

<TABLE> <S> <C>



<ARTICLE> 5
<LEGEND>
The schedule contains summary financial information extracted from the Company's
balance  sheet as of March 31, 2000 and the  Statements  of  Operations  for the
three  months ended March 31, 2000 and is qualified in its entirety by reference
to such financial statements.
</LEGEND>
<CIK>                      0001099231
<NAME>                     Pathnet Telecommunications, Inc.
<MULTIPLIER>      1,000

<S>                             <C>
<PERIOD-TYPE>     3-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START>    JAN-01-2000
<PERIOD-END>               MAR-31-2000

<CASH>                                       118,599
<SECURITIES>                                  33,768
<RECEIVABLES>                                  1,611
<ALLOWANCES>                                       0
<INVENTORY>                                        0
<CURRENT-ASSETS>                               1,408
<PP&E>                                       167,872
<DEPRECIATION>                                 9,507
<TOTAL-ASSETS>                               542,674
<CURRENT-LIABILITIES>                         40,533
<BONDS>                                      346,724
                         37,872
                                      244
<COMMON>                                          32
<OTHER-SE>                                   109,279
<TOTAL-LIABILITY-AND-EQUITY>                 542,674
<SALES>                                        1,927
<TOTAL-REVENUES>                               1,927
<CGS>                                          4,269
<TOTAL-COSTS>                                  4,269
<OTHER-EXPENSES>                                   0
<LOSS-PROVISION>                                   0
<INTEREST-EXPENSE>                             9,743
<INCOME-PRETAX>                             (20,231)
<INCOME-TAX>                                       0
<INCOME-CONTINUING>                         (20,231)
<DISCONTINUED>                                     0
<EXTRAORDINARY>                                    0
<CHANGES>                                          0
<NET-INCOME>                                (20,231)
<EPS-BASIC>                                   (6.59)
<EPS-DILUTED>                                 (6.59)



</TABLE>


                                                                    EXHIBIT 99.1

FOR IMMEDIATE RELEASE
                                                   Contact: Becky Haight
                                                            Investor Relations
                                                            Pathnet
                                                            877 227-5600
                                                            [email protected]

                                                            Patti Kelly
                                                            Media Relations
                                                            Pathnet
                                                            703 390-2868
                                                            [email protected]

                     PATHNET ANNOUNCES FIRST QUARTER RESULTS

RESTON, VA, MAY 9, 2000-- Pathnet Telecommunications,  Inc., a `next generation'
carrier's  carrier of long-haul  transport and competitive local access services
to under-served markets, today announced its financial and operating results for
the quarter ending March 31, 2000.

First  quarter  revenue  doubled to $1.9  million as compared to revenue of $0.8
million in the first quarter of 1999,  and was up almost 90%  sequentially  from
$1.0 million in the prior quarter.  As expected,  given the expenses relating to
the  company's  recent   reorganization,   earnings  before   interest,   taxes,
depreciation  and  amortization  (EBITDA) for the quarter  resulted in a loss of
$10.0 million, up from a loss of $4.6 million for the year-ago quarter.

After  performing a thorough  review and  evaluation of the  company's  proposed
transaction with Colonial Pipeline,  BNSF and CSX, Pathnet bondholders  provided
the necessary consent to enable the transaction to go forward.  This affirmative
action  paved  the  way  for  the  subsequent  closing  of  Pathnet's  strategic
investment  agreements with these companies  valued at $250 million.  As part of
these agreements, Pathnet received the right to develop over 12,000 miles of the
investors' right-of-way holdings.

"It was clearly a landmark  quarter for us," said president and chief  executive
officer Richard Jalkut.  "We almost tripled our services  backlog to $15 million
during the quarter, bringing our total backlog to $61 million when combined with
our infrastructure  and construction sales backlog of $46 million.  In addition,
we  strengthened  ourselves  financially  with a major equity  infusion into the
company and strategically with the addition of three prominent partners."

Pathnet  increased  its gross plant and equipment by $29 million in the quarter,
bringing total plant and equipment acquired to $168 million at quarter-end.  The
company also completed 100 route miles of network and 25 collocations,  bringing
its total network to 6,900 route miles and a total of 65 collocations in over 40
cities. The company continues to target 150 collocations in 80 cities by the end
of the year.

"Our  network  rollout is on track - we have 6,900  miles of network  with 1,200
miles under construction.  In addition, we recently signed a swap deal that will
extend our network another 1,300 miles," said Bob Rouse, Pathnet chief operating
officer.  "With 65 collocations in over 40 cities available for TDM services, we
continue  to  rollout  new  collocations  every  week  and  expect  to have  our
collocations  xDSL and PRI  service-ready  within the next several months.  Both
these products are part of our unique VPOP Plus Service, which bundles Pathnet's
low cost access and transport into an unprecedented value for its customers."

FIRST QUARTER HIGHLIGHTS AND RECENT DEVELOPMENTS

o    Closed transaction for strategic investments valued at over $250 million

o    The  above  transaction  added  $43  million  in cash and $187  million  in
     intangible  ROW  to  Pathnet's  balance  sheet  and is  expected  to add an
     additional $25 million in the second quarter

o    Completed  25  collocations,  bringing  cumulative  total to 65 o Increased
     sales  backlog to $61  million o Achieved  CLEC  approval  in a total of 16
     states o Signed swap agreement  with another  carrier for 1,300 route miles
     of network

o    Announced  purchase  agreement with Nortel  Networks and Hekimian for their
     OPTera and TestDSLTM products, respectively

Pathnet is a `next generation'  carrier's  carrier  providing  competitive local
access services and high capacity, digital transport to under-served and second-
and third-tier U.S. cities. Pathnet provides service to inter-exchange carriers,
local exchange  carriers,  Internet service  providers,  Regional Bell Operating
Companies,  cellular operators and resellers.  Pathnet currently has 6,900 route
miles of completed network and 1,200 route miles of network under  construction.
Additional  information about Pathnet can be found on the company's web site at:
WWW.PATHNET.NET.

THE  STATEMENTS  MADE BY PATHNET  AND PATHNET  TELECOMMUNICATIONS  IN THIS PRESS
RELEASE MAY BE  FORWARD-LOOKING IN NATURE. NO ASSURANCE CAN BE GIVEN THAT FUTURE
RESULTS  WILL BE  ACHIEVED;  ACTUAL  RESULTS  MAY DIFFER  MATERIALLY  FROM THOSE
PROJECTED IN  FORWARD-LOOKING  STATEMENTS.  PATHNET AND PATHNET  TELECOM BELIEVE
THAT THEIR  PRIMARY  RISK  FACTORS  INCLUDE,  BUT ARE NOT  LIMITED  TO:  SIGNING
ADDITIONAL  AGREEMENTS  WITH  PRIVATE  NETWORK  OPERATORS  AND OTHERS;  OFFERING
SERVICES  TO  TELECOMMUNICATION  SERVICE  PROVIDERS;  ENTERING  INTO  PARTNERING
ARRANGEMENTS;  BUILDING A DIGITAL  NETWORK;  MEETING  MARKET DEMAND AND CUSTOMER
SERVICE EXPECTATIONS; AND OBTAINING ADDITIONAL FINANCING. ADDITIONAL INFORMATION
CONCERNING  THESE AND OTHER  POTENTIALLY  IMPORTANT  FACTORS CAN BE FOUND WITHIN
PATHNET TELECOM'S  REGISTRATION  STATEMENT AND PATHNET'S  PERIODIC REPORTS FILED
WITH THE U.S.  SECURITIES AND EXCHANGE  COMMISSION UNDER THE FEDERAL  SECURITIES
LAWS. STATEMENTS IN THIS RELEASE SHOULD BE EVALUATED IN LIGHT OF THESE IMPORTANT
FACTORS.


<PAGE>



                        PATHNET TELECOMMUNICATIONS, INC.
                      CONSOLIDATED STATEMENTS OF OPERATIONS
                      (IN THOUSANDS EXCEPT PER SHARE DATA)
 .

<TABLE>
<CAPTION>

                                                      FOR THE THREE MONTHS ENDED
                                                              MARCH 31,
                                                         2000            1999
                                                         ----            ----
                                                      (UNAUDITED)   (UNAUDITED)
<S>                                                <C>             <C>

Revenue                                            $       1,927   $        826
                                                  --------------   ------------
Expenses:
    Cost of revenue                                        4,269          2,651
    Selling, general and administrative                    6,244          2,795
    Contribution & Reorganization expenses                 1,408             --
    Depreciation                                           2,558            538
                                                  --------------   ------------
      Total expenses                                      14,479          5,984
                                                  --------------   ------------
Net operating loss                                       (12,552)        (5,158)
Interest expense                                          (9,742)       (10,271)
Interest income                                            2,235          3,815
Other                                                       (172)            88
                                                  --------------   ------------
      Net loss                                     $     (20,231)  $    (11,526)
                                                  ==============   ============
Basic and diluted loss per
    Common share                                  $        (6.59)  $      (3.97)
                                                  ==============   ============
Weighted average number of
    Common shares outstanding                             3,068           2,903
                                                  ==============   ============

Other Data:
    EBITDA (1)                                    $      (9,994)   $     (4,620)
                                                  =============    ============

</TABLE>




<PAGE>





                        PATHNET TELECOMMUNICATIONS, INC.
                           CONSOLIDATED BALANCE SHEETS
                     (IN THOUSANDS, EXCEPT STATISTICAL DATA)
<TABLE>
<CAPTION>

                                                                            MARCH 31,          DECEMBER 31,
                                                                              2000                 1999
                                                                              ----                 ----
                                                                            (UNAUDITED)
<S>                                                                     <C>                  <C>

                                         ASSETS
Cash and cash equivalents                                               $      118,599       $      90,662
Marketable securities available for sale, at market                             11,675              42,652
Other current assets                                                             3,020               2,486
                                                                        --------------       -------------
     Total current assets                                                      133,294             135,800
Property and equipment, net                                                    158,365             131,928
Intangible assets                                                              187,275                  --
Restricted cash and marketable securities available for sale, at market         25,817              21,541
Pledged marketable securities held to maturity                                  21,550              21,265
Other assets                                                                    16,373              10,002
                                                                        --------------       -------------
       Total assets                                                     $      542,674       $     320,536
                                                                        ==============       =============
                           LIABILITIES, MANDATORILY REDEEMABLE
                   PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT)
Total current liabilities                                                       40,533              30,588
Bonds payable, net of unamortized bond discount of $3,276 and $3,378           346,724             346,622
Other non-current liabilities                                                    7,991               3,093
Total mandatorily redeemable preferred stock                                    37,872              35,970
Total stockholders' equity (deficit)                                           109,554             (95,737)
                                                                        --------------       -------------
       Total liabilities, mandatorily redeemable preferred stock and
       stockholders' equity (deficit)                                   $      542,674       $     320,536
                                                                        ==============       =============


Selected statistical data:
       Route miles complete                                                      6,900                6,800
       Route miles under construction                                            1,200                  700
       Collocations                                                                 65                   40

</TABLE>



                                                                  ###


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