E SPIRE COMMUNICATIONS INC
10-Q, 1999-05-17
TELEPHONE COMMUNICATIONS (NO RADIOTELEPHONE)
Previous: KNICKERBOCKER L L CO INC, 10-Q, 1999-05-17
Next: THRUSTMASTER INC, SC 13D/A, 1999-05-17





             

                     U.S. SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

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

                                    FORM 10-Q

      [X]   QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES
            EXCHANGE ACT OF 1934
            For the quarterly period ended: March 31, 1999
      [  ]  TRANSITION  REPORT  PURSUANT  TO  SECTION 13 OR
            15(D) OF THE  SECURITIES  EXCHANGE ACT OF 1934 For
            the   transition   period   from   __________   to
                              __________

                         COMMISSION FILE NUMBER 0-25314

                          e.spire COMMUNICATIONS, INC.
             (Exact name of registrant as specified in its charter)

                       Delaware                52-1947746
                      (State or other          (I.R.S.
                       jurisdiction of         Employer
                       incorporation or        Identification
                       organization)            No.)

                    133 National Business Parkway, Annapolis
                         Junction, MD 20701 (Address of
                          principal executive offices)

                                 (301) 361-4200
              (Registrant's telephone number, including area code)

    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 [X] No [ ]

    Indicate the number of shares outstanding of each of the issuer's classes of
common stock, as of the latest practicable date:
    The number of shares of e.spire Common Stock,  Par Value $0.01,  outstanding
on May 12, 1999 was 50,025,996.

<PAGE>



                          e.spire COMMUNICATIONS, INC.

                                  FORM 10 -- Q

                                      INDEX

                          PART I. FINANCIAL INFORMATION
Item 1. Financial Statements
        Condensed Consolidated Balance Sheets  -- March 31, 1999 (unaudited)
        and December 31, 1998                                                  3
        Condensed Consolidated Statements of Operations  -- 
        Three  Months  Ended March 31, 1999 and 1998 (unaudited)               4
        Condensed Consolidated  Statements  of  Cash  Flows  --
        Three  Months  Ended  March 31, 1999 and 1998 (unaudited)              5
        Notes to Unaudited Condensed Consolidated Interim Financial Statements 6
Item 2. Management's Discussion and Analysis of Financial Condition and
        Results of Operations                                                  8
Item 3. Quantitative and Qualitative Disclosures about Market Risk            15

                           PART II. OTHER INFORMATION
Item 1. Legal Proceedings                                                     16
Item 2. Changes in Securities                                                 16
Item 6. Exhibits and reports on Form 8-K                                      17
Signatures................................................................    18
Index of Exhibits.........................................................    19


<PAGE>


                                     PART I
                              FINANCIAL INFORMATION

ITEM 1 -- Financial Statements
                          e.spire COMMUNICATIONS, INC.
                      CONDENSED CONSOLIDATED BALANCE SHEETS
                       ($ in thousands, except share data)

                                                    March 31,      December 31,
                                                      1999             1998
                                                 --------------  ---------------
                                                          (unaudited)
                                     ASSETS

Current Assets:
  Cash and cash equivalents                         $216,276         $328,758
  Restricted cash and investments                     31,191           30,769
  Trade accounts receivable, net of allowance 
    for doubtful accounts of $10,325 and $5,581 
    at March 31, 1999 and December 31, 1998,          64,351           42,254
        respectively
  Unbilled revenue                                    10,947           12,093
  Other current assets                                 6,839            8,742
                                                 ------------    -------------
     Total current assets                            329,604          422,616
                                                 ------------    -------------

Networks, equipment and furniture, gross             625,791          561,954
 Less: accumulated depreciation and amortization     (94,266)         (76,020)
                                                 ------------    -------------
                                                     531,525          485,934
Deferred financing fees, net of accumulated 
   amortization of $9,106 and $7,855 at 
   March 31, 1999 and December 31, 1998,              41,303           42,184
   respectively
Intangible assets, net of accumulated amortization 
   of $5,823 and $3,897 at March 31, 1999 
   and December 31, 1998, respectively                12,831           14,743
Restricted cash and investments                            0           15,125
Other assets                                           2,449            2,355
                                                 -------------    -------------
    Total assets                                    $917,712         $982,957
                                                 ============    =============


                   LIABILITIES, REDEEMABLE STOCK AND OPTIONS,
                            AND STOCKHOLDERS' DEFICIT

Current Liabilities:
  Notes payable - current portion                  $   2,625         $  2,188
  Obligations under capital leases
    - current portion                                  4,420            3,607
  Accounts payable                                    39,610           66,647
  Accrued interest                                     6,302           13,864
  Accrued employee costs                               5,109            1,682 
  Other accrued liabilities                            8,381            8,894
                                                 ------------    -------------
    Total current liabilities                         66,447           96,882
                                                 ------------    -------------
Long Term Liabilities:
  Notes payable, less current portion                736,277          723,105
  Obligations under capital leases, 
   less current portion                               27,756           20,915
  Other long-term liabilities                          3,081            2,745
                                                 ------------    -------------
    Total liabilities                                833,561          843,647
                                                 ------------    -------------

Redeemable stock
  14 3/4% Redeemable Preferred Stock due 2008         74,169           70,136
  12 3/4% Junior Redeemable Preferred Stock 
   due 2009                                          176,555          170,908
                                                 ------------    -------------
    Total redeemable stock                           250,724          241,044

Stockholders equity (deficit):
 Common Stock, $0.01 par value, 125,000,000 
   shares authorized, 49,288,086 and
   48,446,064 shares, respectively, 
   issued and outstanding                                493              484
 Additional paid-in capital                          250,657          258,317
 Accumulated deficit                                (417,723)        (360,535)
                                                 ------------     -------------
Total stockholders' deficit                         (166,573)        (101,734)
                                                 -------------   -------------

Total liabilities, redeemable stock and 
options and stockholders' deficit                  $917,712          $982,957
deficit                                          ============     =============

See accompanying notes to consolidated financial statements.


<PAGE>


                          e.spire COMMUNICATIONS, INC.
                 CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
                       ($ in thousands, except share data)




                                     For the three months ended March 31,
                                   --------------------------------------
                                          1999                 1998
                                   -----------------    -----------------
                                                (unaudited)
Revenues:
   Telecommunications services          $ 40,033             $ 26,144
   Network technologies services          18,040                1,325
                                     -----------         -------------
Total revenues                            58,073               27,469

Cost of sales:
   Telecommunications services            28,134               19,118
   Network technologies services           9,103                  135
                                      ----------         ------------
Total cost of sales                       37,237               19,253

Gross margin:
   Telecommunications services            11,899                7,026
   Network technologies services           8,937                1,190
                                     ------------        ------------
Total gross margin                        20,836                8,216

Operating Expenses
   Selling, general and administrative    36,222               19,806
   Noncash compensation expense            3,049                1,633
   Depreciation and amortization          20,175                8,251
                                      ----------         ------------
Total Operating Expenses                  59,446               29,690

Loss from Operations                     (38,610)             (21,474)

Nonoperating income/expense
  Interest and other income               (4,267)              (4,376)
  Interest and other expense              22,845               14,997
                                     ------------         ------------

Net loss                                 (57,188)             (32,095)

Preferred stock dividends 
  and accretion                            9,697                8,493
                                     ------------          -----------

Net loss applicable to 
  common stockholders                   $(66,885)            $(40,588)
                                     ============         ==============

Basic and diluted net loss per
  common share                          $  (1.37)            $  (1.08)
                                     =============        ==============

Weighted average number of common
  shares outstanding                     48,687,218           37,709,282
                                     ===============      ===============

See accompanying notes to consolidated financial statements.



<PAGE>



                          e.spire COMMUNICATIONS, INC.
                 CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                ($ in thousands)

                                     For the three months ended March 31,
                                              1999                1998
                                          ------------        ------------


Cash flows from operating activities 
Net Loss                                  $ (57,188)             $  (32,095)
Adjustments to reconcile net loss to 
  net cash used in operating activities
    Depreciation and amortization            20,175                   7,487
    Interest deferral and accretion          14,046                   6,881
    Amortization of deferred 
     financing fees                           1,251                     764
    Noncash compensation                      3,049                   1,633
    Non-monetary revenue                     (5,621)                     -    
    Changes in operating assets 
      and liabilities:
        Trade accounts receivable           (15,330)                 (5,839)
        Other current assets                  1,903                   2,275
        Other assets                            (94)                     54
        Accounts payable                    (27,037)                  2,984
        Other accrued liabilities            (6,437)                 (3,724)
                                        --------------          -------------
Net cash used in operating activities       (71,283)                (19,580)

Cash flows from investing activities
   Payments for networks, equipment 
      and furniture                         (54,983)                (27,600)
                                         -------------          --------------
Net cash used in investing activities       (54,983)                (27,600)

Cash flows from financing activities
   Payment of dividends for 
     preferred stock                            (17)                       -
   Payment of notes payable                    (437)                       -
   Payment of lease obligation               (1,200)                       -
   Payment of deferred financing fees          (370)                (13,482)
   Restricted cash related to 
     financing activities                     14,703                  14,544
   Exercise of warrants, options and other     1,105                   1,932
                                         ------------            ------------
Net cash provided by financing 
   activities                                 13,784                   2,994

Net decrease in cash & cash 
   equivalents                              (112,482)                (44,186)
Cash and cash equivalents - 
   beginning of period                       328,758                 260,837
                                        ===============        ================
Cash and cash equivalents -
   end of period                          $  216,276               $ 216,651
                                        ===============        ================

Supplemental disclosure of cash flow information:
   Interest paid                          $  16,378               $  15,359
   Assets acquired under capital lease    $   8,854               $  27,604
   Dividends declared with 
     preferred stock                      $   9,680               $   8,493
   Increase in goodwill                   $      14               $      -
   Accrual of stock bonuses               $   2,100               $   1,009





<PAGE>



                          e.spire COMMUNICATIONS, INC.

                    NOTES TO UNAUDITED CONDENSED CONSOLIDATED
                          INTERIM FINANCIAL STATEMENTS

Note 1: Basis of Presentation

    The  condensed  consolidated  financial  statements  include the accounts of
e.spire  Communications,  Inc. ("e.spire" or the "Company") and its wholly-owned
subsidiaries.  All material  intercompany  accounts and  transactions  have been
eliminated in consolidation.

    The condensed consolidated balance sheet as of March 31, 1999, the condensed
consolidated  statements of operations for the three months ended March 31, 1999
and 1998, and the condensed consolidated  statements of cash flows for the three
months ended March 31, 1999 and 1998 have been prepared by the Company,  without
audit.  In the opinion of  management,  all  adjustments,  which include  normal
recurring  adjustments  necessary  to  present  fairly the  financial  position,
results of  operations  and cash flows at March 31,  1999,  and for all  periods
presented,  have been made.  Certain amounts in the 1998 condensed  consolidated
statements have been reclassified to conform to the 1999 presentation. Operating
results  for the  three  months  ended  March  31,  1999,  are  not  necessarily
indicative of the operating results for the full year.

    Certain information and footnote  disclosures normally included in financial
statements prepared in accordance with generally accepted accounting  principles
have been  condensed  or omitted.  The  Company  believes  that the  disclosures
provided are adequate to make the information  presented not  misleading.  These
financial  statements  should be read in conjunction with the audited  financial
statements and the related notes included in the Company's Annual Report on Form
10-K for the fiscal year ended December 31, 1998.


Note 2: Significant Accounting Policies

Restricted Cash and Investments

    The Company has provided  performance bonds and letters of credit in various
cities in connection  with its  operations,  resulting in a restriction  to cash
amounting to  approximately  $3,581,000  at March 31, 1999,  and  $2,081,000  at
December  31,  1998.  The face  amount  of all bonds  and  letters  of credit is
approximately  $13,678,000 as of March 31, 1999, and  $12,292,000 as of December
31,  1998.  In  addition,  as of March  31,  1999,  the  Company  currently  has
approximately  $27,610,000  in an escrow  account to fund the next two  interest
payments of its 13 3/4 % senior notes due 2007.  The escrow  account is invested
in cash equivalents consisting of government and commercial securities.

Use of Estimates

     The  preparation  of the  condensed  consolidated  financial  statements in
conformity with generally accepted accounting  principles requires management to
make estimates and  assumptions  that affect the reported  amounts of assets and
liabilities; and disclosure of contingent assets and liabilities at the dates of
the  consolidated  financial  statements and the reported amounts of revenue and
expenses  during the  reporting  period.  Actual  results  may differ from those
estimates.

Risks and Uncertainties

     The Company has  recorded  revenue of  approximately  $8.2 million and $2.4
million,  respectively,  for the three  months ended March 31, 1999 and 1998 for
reciprocal  compensation  relating to the  transport  and  termination  of local
traffic  primarily to Internet  service  providers  ("ISPs")  from  customers of
incumbent local exchange carriers ("ILECs") pursuant to various  interconnection
agreements.  These ILECs have not paid and have  disputed  the majority of these
charges,  based on the belief that such calls are not local traffic,  as defined
by the various  agreements and under state and federal laws and public policies.
The  resolution  of these  disputes  will be based on  rulings  by state  public
utility commissions ("PUCs"), the Federal Communications Commission ("FCC"), the
courts and/or commercial  arbitrators.  On February 26, 1999, the FCC ruled that
ISP-bound traffic is jurisdictionally  "interstate in nature",  but delegated to
state PUCs the decision of whether  reciprocal  compensation  must be paid under
the  terms of local  interconnection  agreements.  To date,  there  have been no
unfavorable final rulings concerning payment of past due reciprocal compensation
amounts for ISP traffic in states that e.spire  billed  reciprocal  compensation
through March 31, 1999. The Company has  outstanding  trade accounts  receivable
related to reciprocal  compensation of approximately  $22.8 million at March 31,
1999. Although, there can be no assurance that future regulatory rulings will be
favorable  to the Company,  and,  the timing of receipts  cannot be predicted at
this  time.  The  Company  believes  that all of these  amounts  are  ultimately
collectible.

     Certain of the  Company's  interconnection  agreements  with the ILECs have
expired or soon will expire.  The Company  believes  that there is risk that the
future rates for reciprocal  compensation under new interconnection  agreements,
some of which are  currently  in  negotiation,  may be  significantly  less than
current rates.


Note 3: Financing Activities

     To date,  the Company has funded the  construction  of its networks and its
operations with external  financings,  as described in the Liquidity and Capital
Resources section of Management's Discussion and Analysis of Financial Condition
and Results of Operations.


Note 4: New Accounting Pronouncements

     On March 4, 1998, the American  Institute of Certified  Public  Accountants
issued Statement of Position ("SOP") 98-1, "Accounting for the Costs of Computer
Software  Developed or Obtained for Internal Use." This SOP provides guidance on
capitalizing  certain costs related to computer  software  developed or obtained
for internal use. The SOP is effective for financial statements for fiscal years
beginning after December 15, 1998. The Company implemented SOP 98-1 in the first
quarter of 1999 and the effect was immaterial.

     In April 1998,  the  American  Institute of  Certified  Public  Accountants
issued SOP 98-5, "Reporting on the Costs of Start-up Activities." This statement
requires that the costs of start-up activities, including organization costs, be
expensed as incurred and is effective for fiscal years  beginning after December
15, 1998. The Company  implemented SOP 98-1 in the first quarter of 1999 and the
effect was immaterial.


Note 5: Segment Reporting

    During 1998, the Company adopted Statement of Financial  Accounting Standard
No. 131 ("SFAS No.  131"),  "Disclosures  about  Segments of an  Enterprise  and
Related  Information."  The  Company has  identified  two  reportable  segments:
Telecommunications  and Network  technologies.  The  Telecommunications  segment
provides special access,  local switched voice, data transmission,  and Internet
services,  over the Company's own facilities and on a resale basis.  The Network
Technologies  segment offers fiber optic network design,  project management and
construction  services. The Company's reportable segments are strategic business
units that offer different  products and services.  They are managed  separately
because  each  business  unit  requires   different   technology  and  marketing
strategies.

    The Company  evaluates  performance  based on revenue from third parties and
gross margin.  These are disclosed on the condensed consolidated statement of 
operations for each segment. The reportable total assets for Telecommunications 
services and Network technologies are approximately $889.8 million and $27.9 
million, respectively.





<PAGE>



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

INFORMATION REGARDING FORWARD-LOOKING STATEMENTS

Certain  statements  contained  in  "Management's  Discussion  and  Analysis  of
Financial  Condition  and  Results of  Operations"  and other  sections  herein,
including statements regarding the development of the Company's businesses,  the
markets for the  Company's  services and  products,  the  Company's  anticipated
capital   expenditures,   and  other  similar  statements  are   forward-looking
statements (as such term is defined in the Private Securities  Litigation Reform
Act of 1995)  which can be  identified  as any  statement  that does not  relate
strictly to historical or current  facts.  Forward-looking  statements  use such
words;  as plans,  expects,  will,  will likely  result,  are  expected to, will
continue, is anticipated,  estimate, project, believes, anticipates, intends and
expects,  may,  should,  continue,  seek,  could and other similar  expressions.
Although the Company  believes  that its  expectations  are based on  reasonable
assumptions,  it can give no assurance that its  expectations  will be achieved.
The important  factors that could cause actual results to differ materially from
those in the  forward-looking  statements  herein (the "Cautionary  Statements")
include,  without limitation,  the Company's degree of financial leverage, risks
associated with debt service requirements and interest rate fluctuations,  risks
associated  with  acquisitions  and  the  integration  thereof,  the  impact  of
restriction   under  the   Company's   financial   instruments,   dependence  on
availability of transmission  facilities,  regulation risks including the impact
of the  Telecommunications  Act of 1996, contingent  liabilities,  the impact of
competitive  services  and pricing,  the ability of the Company to  successfully
implement its  strategies,  as well as the other risks  referenced  from time to
time in the Company's  filings with the SEC,  including the Company's  Form 10-K
for  the  year  ended  December  31,  1998.  All  subsequent  written  and  oral
forward-looking  statements attributable to the Company or persons acting on its
behalf are expressly  qualified in their entirety by the Cautionary  Statements.
The Company does not undertake any obligation to release  publicly any revisions
to such forward-looking  statements to reflect events or circumstances after the
date hereof or to reflect the occurrence of unanticipated events.

    The following discussion and analysis should be read in conjunction with the
Company's condensed Consolidated Financial Statements and Notes thereto included
herewith, and with the Company's Management Discussion and Analysis of Financial
Condition  and  Results  of  Operations  and  audited   consolidated   financial
statements  and notes  thereto  for the years ended June 30,  1996,  for the six
months ended  December 31, 1996 and the years ended  December  31,1997 and 1998,
included in the Company's Form 10-K for the fiscal year ended December 31, 1998.

OVERVIEW

    e.spire  Communications,  Inc.,  formed  in  1993,  seeks  to  be a  leading
facilities-based  integrated  communications provider to small- and medium-sized
businesses.  The Company currently operates broadband local fiber-optic networks
in 35 markets,  as well as, a national broadband backbone network. By the end of
1997, the Company had  positioned  itself to combine the provision of dedicated,
local and long distance voice services with frame relay,  asynchronous  transfer
mode  ("ATM")  and  Internet   services.   Having   established  this  suite  of
telecommunications  products which emphasizes data capabilities,  in addition to
traditional  voice  products,  e.spire seeks to provide  customers with superior
service and  competitive  prices while  offering a single source for  integrated
communications  services  designed to meet its  business  customers'  needs.  In
August  1998,  the  Company  announced  its  plan  to  enter  the New  York  and
Philadelphia  local markets,  and to provide  long-haul  broadband  capabilities
between  New York and  Baltimore  through a  long-term  dark  fiber  lease  with
Metromedia   Fiber  Network,   Inc.  The  Company's   facilities-based   network
infrastructure  is designed to provide  broadband  services to  customers  on an
end-to-end basis, and, as of March 31, 1999, the Company's  facilities  included
1,781 route miles of fiber in its 35 local networks, 66 data points-of-presence,
25 Lucent 5ESS switches and approximately 26,000 backbone long-haul miles in its
data network.

    The Company  deployed its broadband data backbone  network in late 1996, and
recently joined the top Tier 1 Internet companies by completing initiatives that
enhance  customers' access to business  Internet  solutions and provide expanded
national  network  coverage.  The  Company  implemented  major  private  network
interconnections   and  enhancements   that  expand   bandwidth,   coverage  and
redundancy. e.spire's new private peering agreements augment its existing public
peering arrangements; it currently peers with over 43 Internet Service Providers
("ISPs") at MAE-East,  43 at MAE-West,  and 24 at the Ameritech  network  access
point.

    The Company acquired  CyberGate,  Inc., a Florida-based ISP in January 1997.
CyberGate  now has in excess of 85,000  subscribers  and  provides  web  hosting
services to customers in over 100 countries. The Company recently announced that
it will introduce  dial-up  Internet access services in 25 of its local markets.
In addition,  in the first quarter of 1999,  the Company also  announced that it
signed an agreement  with Covad  Communications,  Inc.  that enables it to offer
digital  subscriber  line  ("DSL")  service,  a  high-speed  connection  to  the
Internet.  DSL service will be available to e.spire's  customers in New York and
Washington, DC in the third quarter of 1999.

    The Company  introduced  local  switched  voice  services,  including  local
exchange services,  in late-1996 and long distance services in late-1997 through
a combination of both resale of ILECs' services and  facilities-based  services.
As of March 31,  1999,  e.spire had  installed  135,134  customer  access  lines
representing a significant increase over the 57,653 access lines installed as of
March 31,  1998.  In December  1998,  the Company  announced  plans to eliminate
switched local resale from its product  portfolio.  As part of this  initiative,
the Company  announced  in April 1999,  that it had  assigned  its  interests in
approximately 3,700 off-net customers with approximately  15,000 lines to Access
One  Communications,  Inc., a Florida-based  competitive  local exchange carrier
("CLEC")

    In 1998, the Company formed ACSI Network  Technologies,  Inc. ("ACSI NT") to
pursue  market   opportunities   within  the  fiber-optic   network  design  and
construction  arena  primarily  focused on  municipalities,  carriers  and large
end-user customers. ACSI NT provides full-service network development solutions,
including business planning, market analysis,  engineering,  project management,
construction and network-monitoring center design.

    The development of the Company's business and the construction,  acquisition
and  expansion of its  networks  require  significant  capital  expenditures,  a
substantial portion of which are incurred before realization of revenues.  These
expenditures,  together  with the  associated  early  operating  expenses,  have
resulted in a negative cash flow until an adequate customer base is established.
However,  as the  Company's  customer  base  grows,  the  Company  expects  that
incremental  revenues can be generated  with  decreasing  incremental  operating
expenses  as  a   facilities-based   provider,   which  will  provide   positive
contributions to cash flow. The Company has made specific strategic decisions to
build  high-capacity  networks  with  broad  market  coverage,  which  initially
increases its level of capital  expenditures and operating losses.  However, the
Company  believes  that over the long  term,  this  strategy  will  enhance  the
Company's financial performance by increasing the traffic flow over its network.

RESULTS OF OPERATIONS

REVENUES

    The Company  reported an increase  in total  revenues of $30.6  million,  or
111%, to $58.1 million for the three months ended March 31, 1999,  compared with
revenues  of $27.5  million  for the  three  months  ended  March 31,  1998,  as
discussed below.

Telecommunications services

    The Company reported an increase in telecommunications  services revenues of
$13.9  million,  or 53%, to $40.0  million for the quarter ended March 31, 1999,
compared  with  revenues of $26.1  million for the quarter ended March 31, 1998.
Included in Telecommunications  services are revenues from the dedicated access,
switched  local,  long  distance,   reciprocal  compensation  and  data/Internet
products.  The increase in revenues was attributable to the Company's  continued
greater presence and expansion in its markets.  Also,  service offerings such as
e.spire  Platinum and Gold have  contributed  to the  increase in revenues.  The
Company also  increased  the number of route miles,  fiber miles,  co-locations,
buildings connected and voice and data switches deployed. Between March 31, 1998
and March 31,  1999,  the Company  increased  route miles by 467 miles,  or 36%,
increased fiber miles by 45,129 or 40%, co-locations  increased by 35 or 60% and
buildings  connected  increased by 1,319, or 69%. Lucent 5ESS switches  deployed
increased to 25 as of March 31, 1999, from 17 as of March 31, 1998. In addition,
the growth is  attributable  to the Company's  leased  coast-to-coast  broadband
network  infrastructure  through  which it  delivers  both ATM and  frame  relay
products via its 66 data points-of-presence  ("POPs") with accessibility to more
than  300  POPs  on  a  national   level  through   various   network-to-network
interconnection arrangements.  The number of data POPs has increased to 66 as of
March 31, 1999,  from 47 as of March 31, 1998.  Access lines  installed,  net of
disconnects  resulting from the Company's previously announced plan to eliminate
switched resale, increased by 77,481, or 134% to 135,134 at March 31, 1999, from
57,653  at  March  31,  1998.  At March  31,  1999,  approximately  60% of total
installed lines were "on-net" versus approximately 27%, as of March 31, 1998.

    Included in telecommunications  services revenues is reciprocal compensation
of approximately $8.2 million and $2.4 million, for the three months ended March
31, 1999 and 1998,  respectively,  relating to the transport and  termination of
local  traffic  primarily  to ISPs  from ILEC  customers,  pursuant  to  various
interconnection  agreements.  These  ILECs have not paid and have  disputed  the
majority  of these  charges  based on the  belief  that such calls are not local
traffic as defined by the various agreements and under state and federal law and
public  policies.  The  resolution of these disputes will be based on rulings by
state PUCs, the FCC, the courts and/or commercial arbitrators.  The FCC recently
ruled that  ISP-bound  traffic is  jurisdictionally  "interstate  in nature" but
delegated to state PUCs the decision of whether reciprocal  compensation must be
paid under the terms of local  interconnection  agreements.  To date, there have
been no  unfavorable  final rulings  concerning  payment of past due  reciprocal
compensation  amounts  for  ISP  traffic  in  states  in  which  e.spire  billed
reciprocal  compensation  through  March  31,  1999.  Although  there  can be no
assurance that future  decisions  will be favorable to the Company,  the Company
believes  that all of these  amounts are  ultimately  collectible,  although the
timing of receipts cannot be predicted at this time.

Network technologies services

    Network  technologies  services revenues increased $16.7 million, or 1,262%,
to $18.0  million for the three  months  ended  March 31,  1999,  compared  with
revenues of $1.3 million for the three months ended March 31, 1998. The increase
in revenues is  attributable  to the increased  growth in the size and number of
construction  contracts in this  expanded  operation.  The network  technologies
segment offers fiber-optic  network design,  project management and construction
services  by ACSI NT.  Also,  included  in  network  technologies  revenues  are
revenues for  construction  contracts and grants of  indefeasible  rights of use
("IRUs") on portions of e.spire's  networks to Interexchange  Carriers  ("IXCs")
and other  customers.  The  Company  recognized  approximately  $5.6  million in
non-monetary  revenues  from  agreements  to exchange IRU multiple  fibers along
certain sections of e.spire's networks for dissimilar assets or for similar IRUs
plus  substantial  cash  payments.  Included in the three months ended March 31,
1999,  revenues was  approximately  $9.1 million derived from contracts with two
major customers. The Company expects to see continued increases in revenues from
network  technologies  due to  future  growth  and  expansion  in  this  line of
business.

COST OF SALES

    For the quarter ended March 31, 1999,  compared with the quarter ended March
31, 1998, total cost of sales increased $18.0 million,  or 93%, to $37.2 million
from $19.3  million for the three  months  ended March 31,  1998,  as  discussed
below.

Telecommunications services

    Cost of sales for  telecommunications  services  increased $9.0 million,  or
47%, to $28.1 million for the quarter  ended March 31, 1999,  from $19.1 million
for the same period of 1998. These increases relate to growth in the delivery of
switched,  data and special access  services and the addition of engineering and
operations personnel dedicated to supporting the network infrastructure.

    Included in cost of sales are costs of  telecommunications  services paid to
IXCs, ILECs and others for leased telecommunications  facilities, access charges
and services.  Such costs increased to approximately $21.2 million for the three
months  ended March 31, 1999,  from  approximately  $14.6  million for the three
months ended March 31, 1998. In addition,  network related  personnel costs such
as employee  salaries and benefits are also  included in cost of sales.  For the
three months ended March 31, 1999 and 1998, these costs were  approximately $6.9
million and $4.5 million, respectively.

Network technologies services

    Cost of sales for network  technologies  services increased $9.0 million, to
approximately  $9.1 million for the quarter ended March 31, 1999,  compared with
$0.1 million for the same period of 1998. Included in network  technologies cost
of sales are direct  materials and labor  associated  with the  construction  of
networks  and  costs  associated  with  contracted   services.   The  costs  are
attributable  to the increased  growth in this  expanded  line of business.  The
Company  expects  this  growth  to  continue  into  the  future  as the  network
technologies segment continues to expand.


<PAGE>



GROSS MARGIN

    For the quarter ended March 31, 1999,  total gross margins  increased $12.6 
million,  or 154%, to $20.8 million from $8.2 million for the quarter ended 
March 31, 1998.

Telecommunications services

    Telecommunications  services gross margin increased $4.9 million,  or 69% to
$11.9  million  for the quarter  ended March 31, 1999 from $7.0  million for the
same period of 1998.  This  increase  was due to the  increased  sales volume as
described  above.  Additionally,  as the Company  aggressively  exits the resale
business, as mentioned above, the Company expects to see improving gross margins
in this segment.

Network technologies services

    Network  technologies  services gross margin increased $7.7 million, or 651%
to $8.9  million for the three months ended March 31, 1999 from $1.2 million for
the three  months  ended March 31,  1998.  The  increase  was due to the sale of
broader range  projects  performed  during the period as well as, an increase in
the volume of construction sales activity during the first quarter of 1999.

OPERATING EXPENSES

Selling, General and Administrative

    For the quarter ended March 31, 1999,  selling,  general and  administrative
("SG&A") expenses  increased $16.4 million,  or 83%, to $36.2 million from $19.8
million for the same period of 1998.

    Included in SG&A  expenses are  personnel  costs such as employee  salaries,
benefits and  commissions.  Such costs increased $7.0 million,  to $14.4 million
for the quarter  ended March 31,  1999 from $7.4  million for the quarter  ended
March 31, 1998. Also, included in selling,  general and administrative  expenses
are operating  costs such as rent,  advertising and general  administrative  and
office expenses. These expenses increased $9.5 million, to $21.9 million for the
quarter  ended March 31, 1999 from $12.4 million for the quarter ended March 31,
1998.

    Increases in SG&A expenses are a result of the Company's efforts directed at
obtaining more "on-net" and "on-switch"  customers through direct sales, as well
as,  conversion  of customers  that are not  presently  served on the  Company's
facilities.  The primary  costs  associated  with the  increase in direct  sales
include  commissions  that have increased from 1998 and are expected to continue
to increase as the Company  continues to generate new customers.  Another factor
contributing to the increases in SG&A costs were backoffice  expenses which were
a result of increases in personnel and  professional  service  costs  associated
with the  Company's  rapid  growth  which was  necessary to maintain and improve
existing processes. In addition, the Company continues the implementation of its
operational support systems ("OSS") program over the next 12-18 months in which,
it will continue to invest capital.  As these systems are being  installed,  the
Company  will  continue to incur  backoffice  operating  expenses to support the
existing  processes.  The Company  also  continues to incur  increased  expenses
associated with its growth,  including  costs related to its increased  revenues
and the increase in number of office locations and facilities.

Non-Cash Stock Compensation

    Non-cash stock compensation  expense increased $1.4 million, or 87%, to $3.0
million for the quarter ended March 31, 1999,  from $1.6 million for the quarter
ended March 31,  1998.  Included in non-cash  compensation  are accruals for the
issuance of common stock in  connection  with  performance  bonuses and costs of
grants  of  employee  stock  options.  Costs  associated  with the  accrual  for
performance  bonuses  were  approximately  $2.1 million and $1.1 million for the
quarters  ended  March  31,  1999 and  1998,  respectively.  The  costs  for the
compensation  associated with stock option plans was approximately  $0.9 million
for the quarter  ended March 31,  1999,  and $0.5 million for the same period of
1998.


<PAGE>



Depreciation and Amortization

    Depreciation and amortization  expenses increased $11.9 million, or 145%, to
$20.2  million for the quarter  ended March 31, 1999,  from $8.3 million for the
quarter ended March 31, 1998.  These  increases were due to an increase in gross
capital assets to $625.8 million at March 31, 1999, compared with capital assets
of $337.4 million at March 31, 1998.

INTEREST AND OTHER INCOME

    Interest and other income decreased $0.1 million, or 3%, to $4.3 million for
the quarter ended March 31, 1999,  from $4.4 million for the quarter ended March
31, 1998. The decrease in interest and other income reflects the decrease in the
unrestricted  cash balance from March 31, 1998,  to March 31, 1999.  These funds
have been invested in commercial paper, U.S.
Government Securities and money market instruments.

INTEREST AND OTHER EXPENSE

    Interest and other expense increased $7.8 million,  or 52%, to $22.8 million
for the quarter  ended March 31, 1999,  from $15.0 million for the quarter ended
March 31,  1998.  The  increase  was  primarily  due to the  accrual of interest
related to the 10 5/8%  Senior  Discount  Notes due 2008 (the "2008  Notes") was
issued incurred in July,  1998. In addition,  the accrual of interest related to
the 13% Senior  Discount Notes due 2005 (the "2005  Notes"),  the 12 3/4% Senior
Discount Notes due 2006 (the "2006 Notes") and the interest  expense  associated
with the Company's  capital leases also  contributed to the increase in interest
expense.

EBITDA

    Earnings before interest,  taxes,  depreciation and amortization  ("EBITDA")
decreased by $3.8  million,  or 33%, to a loss of $15.4  million for the quarter
ended March 31, 1999,  from a loss of $11.6 million for the same period of 1998.
The decrease was due to the increases in cost of sales and SG&A  expenses  which
offset the increases in revenues as discussed above.

NET LOSS & NET LOSS APPLICABLE TO COMMON STOCKHOLDERS

    As a result of the  aforementioned  increases  in  revenues,  cost of sales,
operating  expenses,  depreciation  and  amortization,  and interest  income and
expense,  net loss  increased  $25.1  million,  or 78%, to $57.2 million for the
quarter ended March 31, 1999, from a loss of $32.1 million for the quarter ended
March 31, 1998. Further,  net loss applicable to common  stockholders  increased
$26.3  million,  or 65%, to $66.9  million for the quarter ended March 31, 1999,
from a loss of $40.6 million for the same period of 1998. These increases to net
loss  applicable  to  common  stockholders  are  attributable  to the  increases
mentioned  above,  as well as, an  increase in  preferred  stock  dividends  and
accretion  related  to the 14 3/4%  Preferred  Stock  and the 12 3/4%  Preferred
Stock.

LIQUIDITY AND CAPITAL RESOURCES

    The Company's further  development and enhancement of new services,  as well
as, the continued development,  construction, expansion, operation and potential
acquisition  of networks  will require  substantial  capital  expenditures.  The
funding of these  expenditures is dependent upon the Company's  ability to raise
substantial financing.  From the Company's inception through March 31, 1999, the
Company has raised net  proceeds of  approximately  $1.0  billion  from debt and
equity  financings.  The Company's  cash,  cash  equivalent and restricted  cash
decreased  $127.2  million for the three  months  ended March 31,  1999,  due to
capital expended for the expansion of the Company's  infrastructure and services
and to fund negative cash flow, including principal and interest payments. . The
Company expects to incur  additional  capital  expenditures for the expansion of
its infrastructure and services and to fund negative cash flow in the future. At
March 31,  1999,  the Company had  approximately  $247.5  million of cash,  cash
equivalents  and  restricted  cash  available  for such  purposes.  The  Company
continues to consider potential  acquisitions or other arrangements that may fit
the Company's  strategic plan. Any such  acquisitions  or arrangements  that the
Company  might  consider  are  likely  to  require  additional  equity  or  debt
financing,  which the Company will seek to obtain as required and which may also
require that the Company obtain the consent of its debt holders.

    Management  anticipates  that  the  Company's  current  cash  resources  are
sufficient  to fund the  Company's  continuing  negative  cash flow and required
capital  expenditures  into  the  first  half of 2000.  To meet  its  additional
remaining capital requirements and to successfully  implement its strategy,  the
Company  will be required to sell  additional  equity  securities,  increase its
existing  credit  facility,   acquire   additional  credit  facilities  or  sell
additional  debt  securities,  certain of which may  require  the consent of the
Company's debt holders. Accordingly,  there can be no assurance that the Company
will be able to obtain the  additional  financing  necessary to satisfy its cash
requirements  or to  implement  its  strategy  successfully,  in which event the
Company  will be unable  to fund its  ongoing  operations,  which  would  have a
material  adverse  effect on its business,  results of operations  and financial
condition.

    On November 14, 1995, the Company  completed a private  offering of the 2005
Notes and warrants from which the Company received  approximately  $96.1 million
in net proceeds.  The 2005 Notes will accrue to an aggregate principal amount of
$190.0 million by November 1, 2000, after which cash interest will accrue and be
payable on a semi-annual basis.

    On March 21,  1996,  the Company  completed  a private  offering of the 2006
Notes from which the  Company  received  net  proceeds  of  approximately  $61.8
million.  The 2006 Notes will accrue to an aggregate  principal amount of $120.0
million by April 1, 2001,  after which cash  interest will accrue and be payable
on a semi-annual basis.

    On July 10,  1997,  the Company  completed  the  issuance and sale of 75,000
units (the "Unit  Offering"),  consisting of 14 3/4% Redeemable  Preferred Stock
due 2008 and warrants (the "Unit  Warrants") from which the Company received net
proceeds of  approximately  $67.7  million.  Dividends on the 14 3/4%  Preferred
Stock accrue from the date of issuance, are cumulative and are payable quarterly
in arrears,  at a rate per annum of 14 3/4% of the  liquidation  preference  per
share.  Dividends on the 14 3/4% Preferred  Stock will be paid, at the Company's
option,  either  in cash or by the  issuance  of  additional  shares  of 14 3/4%
Preferred Stock; provided,  however, that after June 30, 2002, to the extent and
for so long as the Company is not precluded from paying cash dividends on the 14
3/4% Preferred  Stock by the terms of any then  outstanding  indebtedness or any
other agreement or instrument to which the Company is then subject,  the Company
shall pay dividends on the 14 3/4% Preferred Stock in cash.

    On July 23, 1997, the Company  completed the sale of the 2007 Notes.  Of the
total  net  proceeds  of  $204.3  million,  the  Company  placed  $70.0  million
representing  funds sufficient to pay the first 5 interest  payments on the 2007
Notes into an escrow account for the benefit of the holders thereof. Payments of
interest on the 2007 Notes are payable semi-annually, and began in January 1998.

    In October 1997, the Company  issued the 12 3/4% Preferred  Stock from which
the Company received net proceeds of approximately $146.0 million.  Dividends on
the 12 3/4% Preferred Stock accrue from the date of issuance, are cumulative and
are  payable  quarterly  in  arrears,  at a rate  per  annum  of 12  3/4% of the
liquidation  preference per share. Dividends on the 12 3/4% Preferred Stock will
be  paid,  at the  Company's  option,  either  in  cash  or by the  issuance  of
additional  shares of 12 3/4% Preferred  Stock;  provided,  however,  that after
October 15, 2002,  to the extent and for so long as the Company is not precluded
from paying cash  dividends on the 12 3/4%  Preferred  Stock by the terms of any
agreement or instrument governing any of its then outstanding indebtedness,  the
Company shall pay dividends on the 12 3/4% Preferred Stock in cash.

    On December 30, 1997, the Company entered into a credit facility with ("AT&T
Credit  Facility") for the  development and  construction  of fiber-optic  local
networks. The Company has financing commitments for $35.0 million under the AT&T
Credit  Facility,  of which,  $35 million had been  borrowed as of December  31,
1997.  Payments of principal  and interest on  borrowings  under the AT&T Credit
Facility are payable  quarterly,  commencing  in 1998.  The loans under the AT&T
Credit Facility are secured by the capital stock of the material subsidiaries of
the  Company  and the  promissory  notes (the  "Intercompany  Notes") of certain
subsidiaries  of the Company  evidencing the debt. In addition,  the AT&T Credit
Facility includes  covenants,  some of which impose certain  restrictions on the
Company and its material subsidiaries  including restrictions on the declaration
or payment of dividends, the conduct of certain activities, certain investments,
the creation of additional  liens or  indebtedness,  the  disposition of assets,
transactions with affiliates and extraordinary corporate transactions.

    On March 31, 1998, the Company  restructured  certain leases  resulting in a
change from operating to capital lease treatment.  This transaction  resulted in
capital lease obligations totaling $32.2 million,  being included in liabilities
as of March 31, 1999.

    On July 24,  1998,  the  Company  completed a private  placement  of 10 5/8%
Senior  Discount  Notes  due  2008  yielding  net  proceeds  to the  Company  of
approximately $225 million. The 2008 Notes will accrue to an aggregate principal
amount of $375 million by July 2008. The 2008 Notes will require payment of cash
interest semi-annually in arrears beginning January 1, 2004.

YEAR 2000 PROGRAM

    The Year 2000 problem is the result of computer programs being written using
two digits rather than four to define the applicable  year. Any of the Company's
computer programs that have  date-sensitive  software may recognize a date using
"00" as the year 1900 rather than the Year 2000.  This could  result in a system
failure or miscalculations causing disruptions of operations,  including,  among
other things, a temporary  inability to process  transactions,  send invoices or
engage in similar normal business activities.

    Based upon a  comprehensive  systems  assessment of its Year 2000 readiness,
which  assessed both hardware and software for the Company's  telecommunications
network and information  systems, the Company has determined that to the best of
its current knowledge,  70% of its hardware and software is Year 2000 compliant.
Accordingly,  the  Company  believes  that it will not be  required to modify or
replace a significant  portion of its software and hardware so that its computer
systems  will  function  properly  with  respect  to dates in the Year  2000 and
thereafter.  Additionally,  because the majority of the hardware and software in
use by the  Company is of the  commercial  off-the-shelf  variety  and  requires
minimal  customization,  the Company currently expects that its efforts to bring
100%  of the  software  and  hardware  that  it  uses  into  compliance  will be
manageable.  The Company has completed its overall planning phase, and currently
is well  into the  execution  phase of its Year  2000  program,  which  includes
verification  and updating of its initial  assessment,  and the  development and
execution  of  specific   initiatives  that  intend  to  upgrade  the  remaining
non-compliant  hardware  and  software  to Year 2000  compliance  not later than
October 31, 1999.

    The Company has  engaged a  consulting  firm  certified  by the  Information
Technology   Association   of  America  Year  2000  to  help  execute  its  Year
2000-readiness program in conjunction with e.spire staff.

    Based  upon  results  of the above  comprehensive  systems  assessment,  the
Company  believes that work  associated with bringing the Company into full Year
2000 compliance is limited to installing  available  compliant software upgrades
for commercial  off-the-shelf software, the remediation of the general ledger of
its  subsidiary  CyberGate,  and the  replacement  of a small number of personal
computers. If the replacement software is not in place before the year 2000, the
most reasonably  likely worst case scenario is that e.spire would not be able to
add new customers to its network using an automated system, although it would be
able to add new customers  manually for a limited time.  If the  remediation  of
CyberGate's  general  ledger is not  completed,  it may have to resort to manual
reporting  processes for that subsidiary.  The Company's Year 2000 plan includes
risk assessment and contingency  planning processes that are designed to provide
alternative  courses  of  action  for  the  Company  to  follow  if  any  of the
remediation efforts are not successful or if a supplier's  processes or products
are not Year 2000 ready. The full contingency  planning processes are planned to
be completed by the middle of August 1999.

    The Company is in ongoing communication with all of its significant hardware
and software  suppliers and has been in  communication  with large  customers to
determine the extent to which the Company's  interface systems are vulnerable to
those  third  parties'  failure to  remediate  their own Year 2000  issues.  The
Company's  total Year 2000 project cost and estimates to complete it include the
estimated  costs and time  associated  with the impact of third  party Year 2000
problems  based on presently  available  information.  However,  there can be no
guarantee that the software or systems of other companies on which the Company's
systems rely will be timely  converted  and would not have an adverse  effect on
the  Company's  systems.  The Company is working  with its vendors to remove any
non-compliant  installed  hardware and  software by October 31,  1999.  If third
party  vendors  do not  remediate  prior to the Year 2000,  the most  reasonably
likely  worst case  scenario is that the Company may have  significant  problems
associated  with service  fulfillment,  billing,  trouble  reporting and service
providing.  Contingency  plans will be developed as necessary if a vendor cannot
provide the  necessary  Year 2000  compliant  product on a timely  basis for the
Company to meet that date.

    The  Company  anticipates  completing  the Year 2000  project not later than
October 31,  1999,  which is prior to any  anticipated  impact on its  operating
systems.  As of March 31,  1999,  the Company has  incurred  approximately  $1.5
million  cumulatively  for the initial Year 2000  Assessment  Report,  inventory
database and validation,  and beginning  remediation  efforts. The total cost of
the Year 2000 project is  estimated to be $5-$6  million and will be expensed as
incurred and funded with existing cash  resources.  The costs of the project and
the  date  on  which  the  Company  believes  it will  complete  the  Year  2000
modifications are based on management's best estimates,  which were derived from
numerous assumptions of future events,  including the continued  availability of
certain resources,  third party  modification plans and other factors.  However,
there can be no guarantee  that these  estimates  will be  achieved,  and actual
results could differ materially from those anticipated.



Item 3. Quantitative and Qualitative Disclosures About Market Risk.

Not applicable



<PAGE>


PART II

OTHER INFORMATION

ITEM 1 -- Legal Proceedings

    The Company and its subsidiaries are currently parties to routine litigation
incidental to their business,  none of which,  individually or in the aggregate,
are expected to have a material  adverse effect on the Company.  The Company and
its subsidiaries are parties to various court appeals and regulatory arbitration
proceedings relating to certain of the Company's interconnection  agreements and
continue  to  participate  in  regulatory  proceedings  before the FCC and state
regulatory agencies concerning the authorization of services and the adoption of
regulations for local services.

ITEM 2 -- Changes in Securities

  On January 5, 1999,  the Company  issued  20,000 shares of Common Stock to two
employees of ACSI NT, pursuant to the Company's 1998 Restricted  Stock Plan (the
"Plan").  At the time of  issuance  of these  shares,  the Plan was  subject  to
approval by the Company's  stockholders.  The stockholders  approved the Plan at
the  Company's  annual  stockholders  meeting on May 12,  1999.  The shares were
issued pursuant to Section 4(2) of the Securities Act of 1933.




<PAGE>


ITEM 6 -- Exhibits and Reports On Form 8-K

(a)  Exhibits

         Exhibit
         Number                     Description
       ------------      -----------------------------------------------------
          10.1           Lease agreement between e.spire Communications, Inc. 
                            and B.F. Saul Real Estate Investment Trust for the  
                            Company's offices at 8201 Greensboro Dr., McLean, VA
          10.2           Lease agreement between e.spire Communications, Inc. 
                            and Dulles North Office Park II Corporation for the
                            Company's offices at 22685 Holiday Park Dr., 
                            Sterling, VA.
          11             Statement re computation of per share earnings
          27             Financial Data Schedule
          99             Supplemental Financial Information

(b) Reports on Form 8-K

     (a) On February  22,  1999,  e.spire  Communications,  Inc.  issued a press
         release announcing the appointment on that date of Dennis Kern as Chief
         Operating  Officer,   and  the  resignation  of  Ronald  E.  Spears  as
         President, effective July 1, 1999.


<PAGE>



                                   SIGNATURES

    In accordance with the requirements of the Securities  Exchange Act of 1934,
the registrant caused this report to be signed on its behalf by the undersigned,
thereunto duly authorized.

                                                e.spire Communications, Inc.
                                                (Registrant)



                                     /s/ Anthony J. Pompliano
                                     ------------------------
                                     Anthony J. Pompliano
May 14, 1999                         Chairman and Chief Executive Officer

                                     /s/ David L. Piazza
                                     -------------------
                                     David L. Piazza
May 14, 1999                         Chief Financial Officer


<PAGE>


                                INDEX OF EXHIBITS

EXHIBIT
NO.         DESCRIPTION                                            PAGE NO.
- ----        -----------                                            --------

10.1        Lease agreement between e.spire Communications,
              Inc.and B.F. Saul Real Estate Investment Trust 
              for the Company's offices at 8201 Greensboro Dr., 
              McLean, VA.                                             E-1
10.2        Lease aggrement between e.spire Communications, Inc.
              and Dulles North Office Park II Corporation for 
              the Company's offices at 22685 Holiday Park Dr., 
              Sterling, VA.                                           E-2
11          Statement re: computation of per-share earnings (loss)    E-3
27          Financial Data Schedules                                  E-4
99          Supplemental Financial Information                        E-5





EXHIBIT 10.1

                              8201 Greensboro Drive


                                      Lease


                                     Between


                          e.spire Communications, Inc.


                                       and


                     B. F. Saul Real Estate Investment Trust





<PAGE>


                       8201 GREENSBORO DRIVE OFFICE LEASE


         THIS LEASE, made this 9th day of February,  1999, by and between (i) B.
F. Saul Real Estate Investment Trust  (hereinafter  "Landlord") and (ii) e.spire
Communications, Inc., a Delaware corporation (hereinafter "Tenant").


                                   WITNESSETH:


 .        Premises.

         For and in  consideration  of the  rent  hereinafter  reserved  and the
mutual covenants  hereinafter  contained,  Landlord does hereby lease and demise
unto  Tenant,  and Tenant does hereby  hire,  lease and accept,  from  Landlord,
certain space and improvements  comprising  approximately  29,048 gross rentable
square feet, as measured in accordance with BOMA (Building, Owner and Management
Association)  standards, of office space (the "Gross Area") on the 11th floor of
the building known as 8201  Greensboro  Drive (the  "Building")  located at 8201
Greensboro  Drive,  McLean,  Fairfax  County,  Virginia,  all upon the terms and
conditions  hereinafter  set forth.  That portion of the Gross Area which Tenant
shall be entitled to occupy is hereinafter referred to as the "Premises", and is
outlined  in red on the floor  plan  attached  hereto  as  Exhibit A and by this
reference made a part hereof. It is specifically understood that for purposes of
calculating any payments or pro-rations hereunder,  the number of gross rentable
square feet set forth above shall control.

 .        Term.  The term of this lease shall commence on the date hereof 
(the "Lease Date") and shall end Eighty-four (84) months after the 
"Rent Commencement Date", as hereinafter defined.

 . The  "Rent  Commencement  Date"  shall  be the  first to occur of (i) the date
Tenant  actually  commences  occupancy of the Premises,  or (ii) forty (40) days
after  Landlord  delivers  the  Premises  to  Tenant.  In  the  event  the  Rent
Commencement  Date is a date other than the first day of a calendar  month,  the
term of the lease  shall run for the number of months  set forth  above from the
first day of the calendar month following the Rent Commencement  Date.  Landlord
and Tenant hereby agree to execute an agreement (the  "Commencement and Estoppel
Agreement"  attached hereto as Exhibit F) specifying the Rent  Commencement Date
hereof.

Rent.

         . Commencing  with the Rent  Commencement  Date,  Tenant shall pay (the
"Base Rent") for month one and two of the Lease the sum of  Thirty-six  Thousand
Seven and 42/100 Dollars  ($36,007.42).  Tenant shall pay as Base Rent for month
three of the Lease the sum of  Fifty-four  Thousand  Eleven and  12/100  Dollars
($54,011.12).  Tenant shall pay as Base Rent for months four  through  twelve of
the  Lease  the  sum  of  Seventy-two   Thousand  Fourteen  and  83/100  Dollars
($72,014.83).  All monthly  installments of rent shall be payable to Landlord or
its designated  agent, in advance,  without  previous notice or demand therefor,
and without recoupment,  deduction or setoff, with the first monthly installment
to be due and  payable  no  later  than  the  Rent  Commencement  Date  and each
subsequent  monthly  installment  to be due and payable on the first day of each
and every month following the Rent  Commencement Date during the term hereof. If
the Rent  Commencement  Date is a date other than the first day of a month, rent
for the period  commencing with and including the Rent  Commencement  Date until
the  first  day of the  following  month  shall  be  pro-rated  at the  rate  of
one-thirtieth (1/30th) of the fixed monthly rental per day.

                  ()  Beginning  in year two of the Lease,  Tenant  shall pay as
         annual rent for the Premises the sum of Eight Hundred  Ninety  Thousand
         One Hundred Three and 24/100 Dollars  ($890,103.24) per annum,  payable
         in equal  monthly  installments  of  Seventy-four  Thousand One Hundred
         Seventy-five and 27/100 Dollars ($74,175.27) each.

                  () Beginning  in year three of the Lease,  Tenant shall pay as
         annual rent for the Premises the sum of Ninety Hundred Sixteen Thousand
         Eight Hundred Six and 36/100 Dollars  ($916,806.36) per annum,  payable
         in equal monthly  installments of Seventy-six Thousand Four Hundred and
         53/100 Dollars ($76,400.53) each.

                  ()  Beginning  in year four of the Lease,  Tenant shall pay as
         annual  rent  for  the  Premises  the sum of  Nine  Hundred  Forty-four
         Thousand Three Hundred Ten and 60/100 Dollars  ($944,310.60) per annum,
         payable in equal monthly  installments  of  Seventy-eight  Thousand Six
         Hundred Ninety-two and 58/100 Dollars ($78,692.58) each.

                  ()  Beginning  in year five of the Lease,  Tenant shall pay as
         annual  rent  for the  Premises  the sum of  Nine  Hundred  Seventy-two
         Thousand Six Hundred  Thirty-nine and 96/100 Dollars  ($972,639.96) per
         annum,  payable in equal monthly  installments  of Eighty-one  Thousand
         Fifty-three and 33/100 Dollars ($81,053.33) each.

                  ()  Beginning  in year six of the Lease,  Tenant  shall pay as
         annual  rent  for  the  Premises  the  sum of One  Million  Eight-eight
         Thousand Nine Hundred  Sixty-three  and 16/100 Dollars  ($1,088,963.16)
         per annum,  payable in equal monthly  installments  of Ninety  Thousand
         Seven Hundred Forty-six and 93/100 Dollars ($90,746.93) each.

                  () Beginning  in year seven of the Lease,  Tenant shall pay as
         annual  rent  for the  Premises  the  sum of One  Million  One  Hundred
         Twenty-one   Thousand  Six  Hundred   Thirty-two   and  08/100  Dollars
         ($1,121,632.08)  per annum,  payable in equal monthly  installments  of
         Ninety-three  Thousand  Four  Hundred  Sixty-nine  and  34/100  Dollars
         ($93,469.34) each.

 . Letter of Credit. . Tenant has elected to deposit a with Landlord in lieu of a
cash security  deposit to secure the prompt  payment of Base Rent and Additional
Rent  under the Lease (the  "Lease  Liabilities")  Letter of Credit  Number , in
favor of Landlord as the  beneficiary,  issued by ________ in the initial amount
of One Hundred Forty-four Thousand Twenty-nine and 66/100 Dollars ($144,029.66),
together with all renewals and extensions  thereof and  substitutions  therefor,
and all cash  proceeds  thereof (all of the  foregoing  are herein  collectively
referred to as the ("Letter of Credit"). If Tenant fails to renew or replace the
Letter of Credit as provided in this Article 4,  Landlord may present the Letter
of Credit for  payment by the issuer  thereof,  and retain the  proceeds  of the
Letter of Credit as the  Security  Deposit  under this  Lease,  and, if Landlord
retains the proceeds of the Letter of Credit as the Security  Deposit,  Landlord
may commingle the deposit with its own funds. If Landlord receives cash proceeds
of the  Letter  of  Credit,  such  proceeds  shall be held as  security  for the
performance by Tenant or Tenant's covenants and obligations under this Lease, it
being  expressly  understood that the deposit shall not bear interest to Tenant,
and  shall not be  considered  an  advance  payment  of  rental or a measure  of
Landlord's damage in case of default by Tenant. Upon the occurrence of any event
of default by Tenant or breach by Tenant of Tenant's covenants under this Lease,
Landlord may, from time to time,  without prejudice to any other remedy, use the
security  deposit to the extent  necessary  to make good any  arrearage  of rent
and/or to correct or repair any damage,  injury,  expense or liability caused to
Landlord  by the event of  default  or breach of  covenant.  Any  balance of the
security deposit remaining after the full and complete  satisfaction of Tenant's
obligations to Landlord shall be returned by Landlord to Tenant upon termination
of this Lease;  provided,  however, that Landlord may retain all or a portion of
the  security  until  Landlord  makes the  final  annual  adjustments  of Annual
Operating  Costs and Real Estate  Taxes and  ascertains  Tenant's  share of such
amounts which accrued prior to the expiration of the term.

         . If Tenant  defaults in the payment of rent or in the  performance  or
observance of any other obligations to be performed on its part under this Lease
and does not cure such default within any notice and cure period provided for in
this Lease,  Landlord may present the Letter of Credit for payment by the issuer
thereof  and apply the  proceeds to payment or Base Rent or  Additional  Rent in
default,  and/or to the prepayment of the Base Rent for any subsequent period of
the term  and/or to any  amount to which  Landlord  may be  entitled  under this
Lease; and Tenant shall promptly  thereafter restore the Letter of Credit to the
original amount above specified.  The right of Landlord to apply the Proceeds of
the Letter of Credit as above  specified  shall not be construed as a limitation
upon Landlord's  right to invoke any other remedy  available under this Lease or
at law or equity for breach of this  Lease,  or to  collect  the full  amount of
damages  owing by Tenant on account of such  breach.  If, by reason of  Tenant's
default under this Lease, Landlord terminates this Lease at any time or reenters
the  Premises,  Landlord  may credit  against the  damages  which it suffers but
without waiving its rights to recovery of additional  damages to which it may be
entitled  and/or  apply it to the  monthly  installments  of Base Rent and other
amounts payable under this Lease hereunder in inverse order of accrual.

         .  The  Letter  of  Credit  shall  be  issued  to  Landlord,  shall  be
unconditional (i.e., without requirements or conditions for presentation,  honor
or payment),  except as expressly  provided for below,  and shall be irrevocable
during its stated term.  The Letter of Credit may state or require  that, at the
time that Landlord presents the Letter of Credit for payment,  such presentation
shall be accompanied by a written statement executed by any person purporting to
be an authorized officer of the general partner of Landlord as follows:

         "This shall certify that a default by Tenant in the payment of rent has
         occurred  and is  continuing  under  that  certain  Lease  dated by and
         between B. F. Saul Real  Estate  Investment  Trust,  as  Landlord,  and
         e.spire  Communications,  Inc.,  as  Tenant.  Any  notice or notices of
         default  required  by such  Shopping  Center  Lease  have been given by
         Landlord to Tenant and Tenant has not cured  within any period for cure
         provided for in the Lease.  Based upon the foregoing,  Landlord  hereby
         presents  Letter of Credit No. for payment and hereby  demands that the
         issuer  thereof  draw upon such Letter of Credit and remit the proceeds
         of the Letter of Credit to Landlord."

         . The Letter of Credit may provide by its terms that,  if Landlord  has
not  previously  notified the issuer of the occurrence of an event of default by
Tenant  under  this  Lease,  the amount  thereof  shall be reduced by the sum of
Seventy-two  Thousand  Fourteen and 83/100  Dollars  ($72,014.83)  on the fourth
anniversary of the Rent Commencement Date. The Letter of Credit shall state such
reduction in amount as specified in the  immediate  preceding  sentence.  In the
alternative, Tenant may provide an initial Letter of Credit in the amount of One
Hundred  Forty-four  Thousand  Twenty-nine  and  66/100  Dollars   ($144,029.66)
expiring on the third anniversary of the Rent Commencement Date, in which event,
Tenant shall not later than thirty (30) days prior to the third  anniversary  of
the Rent Commencement Date, provide Landlord with a replacement Letter of Credit
in the amount then  required to be maintained by Tenant under clause (i) or (ii)
of this Paragraph 4 (d), as applicable,  providing for an additional term of not
less than one (1) year.

         . Any  Letter  of  Credit  which has an  expiration  date  prior to the
expiration date of the term of this Lease  (including any Option Terms exercised
by Tenant) shall also provide that Landlord may present the Letter of Credit for
payment when accompanied by the following written statement:

         "Tenant  has failed to renew or  replace  the Letter of Credit ten (10)
         days before its expiration  date, and Landlord is accordingly  entitled
         to draw upon the Letter of Credit."

         . The Letter of Credit shall also expressly  state and provide that the
issuer is entitled to rely on any  statement in the forms  provided  above which
purports  on its face to be  executed  by an officer of  Landlord,  and that the
issuer is not  obligated  to verify the  authority of any such person to execute
any such  statement  on  Landlord's  behalf,  nor shall the  issuer or Tenant be
liable in any  manner  whatsoever  if any such  statement  is found to have been
improperly delivered by Landlord,  of if such statement is delivered by a person
not duly authorized to do so on Landlord's behalf.

         . In addition to all other rights available to it under applicable laws
or otherwise:  Landlord, in conjunction with the assignment, pledge, or transfer
of its  interest  as  Landlord  under the Lease,  shall have the right to assign
therewith Landlord's rights in the Letter of Credit, and any assignee,  pledgee,
or transferee  shall have the rights of Landlord  hereunder  with respect to the
Letter of Credit so assigned,  pledged,  or  transferred,  and Landlord shall be
thereafter  relieved  from all duties with respect to any such Letter of Credit,
provided  Landlord  provides Tenant with written  documentation  evidencing such
assignment, pledge or transfer.

 . Increases in Annual  Operating  Costs.  Tenant  agrees to pay to Landlord,  as
additional  rent, its Pro-Rata Share (as  hereinafter  defined) of any amount by
which the  total  Annual  Operating  Costs (as  hereinafter  defined),  for each
Adjustment Year (as hereinafter defined),  exceeds an amount equal to the Annual
Operating  Costs for the  Premises  incurred  in fiscal  year  October 1, 1998 -
September 30, 1999 (the "Base Annual Operating Cost").  For the purposes of this
lease,  the  Adjustment  Year shall mean the twelve month period  ending on each
September  30, the first such  Adjustment  Year  being the twelve  month  period
ending on the first September 30 occurring after the Rent Commencement Date.

         . Annually  during the term hereof,  Landlord shall furnish to Tenant a
statement (the "Annual Statement") of the actual Annual Operating Costs for each
Adjustment Year. Tenant shall,  within fifteen (15) business days of its receipt
of said Annual  Statement,  pay to Landlord its Pro-Rata Share of the difference
between the actual Annual  Operating  Cost  reflected on said  Statement and the
Base Annual  Operating  Cost set forth above (which  difference  is  hereinafter
referred to as the "Increase") or, if Tenant has paid an amount in excess of its
Pro-Rata  Share,  Landlord  will  refund  such  amount  to  Tenant.  Thereafter,
commencing on the first day of October immediately following the Adjustment Year
covered by said Annual  Statement,  Tenant shall pay to Landlord  monthly during
the term hereof,  as  additional  rent,  without  notice or demand  therefor and
without any  deduction  or setoff  whatsoever,  an amount  equal to  one-twelfth
(1/12th) of its Pro-Rata Share of such Increase.  Tenant's  monthly  payment set
forth above shall be adjusted as of the end of each  succeeding  Adjustment Year
to the actual increase set forth in each successive Annual  Statement,  and such
adjustment  shall be paid within  fifteen (15) business days of the date of said
Annual  Statement.  The  amount  of any  Increase  calculated  from time to time
pursuant  to any  Annual  Statement  shall be used as the basis for  calculating
Tenant's monthly payment for the next succeeding twelve (12) month period.

           . At any time or times prior to or during the first  Adjustment Year,
Landlord  may submit to Tenant a statement  of  Landlord's  estimate of Tenant's
Increase for such  Adjustment  Year. If such estimate is submitted  prior to the
first Adjustment Year, Tenant shall pay to Landlord one-twelfth (1/12th ) of the
amount so  estimated  on the first day of each month in advance,  commencing  on
October 1 of the Adjustment  Year. In case such estimate is submitted during the
first  Adjustment  Year,  Tenant shall,  (i) within  fifteen (15) days after the
delivery of such statement,  make a lump sum payment to Landlord equal to 1/12th
of Tenant's estimated Increase for such Adjustment Year multiplied by the number
of months in such  Adjustment  Year  that will have  elapsed  prior to the first
monthly  payment  required  by clause  (ii)  hereof,  and (ii)  begin  paying to
Landlord,  as additional  monthly rent, due and payable on the first day of each
month,  an  amount  equal  to  1/12th  of  Tenant's  Increase  as so  estimated.
Notwithstanding,  in no event shall Tenant pay (or be billed)  operating expense
pass-through costs until the commencement of the second lease year.

         .  For the purposes of this paragraph 5, the following provisions shall
control:

                  () All monthly  payments as may be required  hereunder for the
period from the first day of each Adjustment Year through the date of receipt of
the Annual Statement for the preceding Adjustment Year, shall be payable without
demand in full on the first day of the calendar month next following the date of
receipt of said Annual Statement,  but not less than ten (10) business days from
Tenant's receipt. Failure by the Landlord to timely provide any Annual Statement
shall not constitute a waiver by Landlord of its rights to payments due pursuant
to this paragraph, and the obligations hereunder shall survive the expiration or
other termination of this Lease.

                  () For any  applicable  Adjustment  Year that  ends  after the
expiration  date of this Lease,  the Increase for that  Adjustment Year shall be
apportioned on a per diem basis so that only that portion of such Increase as is
attributable  to the portion of such Adjustment Year that occurs during the term
of this Lease, shall be payable by Tenant.

         . Tenant's share of Annual Operating Costs ("Tenant's  Pro-Rata Share")
for each full or partial fiscal year selected by Landlord  during the Term shall
be computed by Landlord by multiplying the amount of Annual Operating Costs by a
fraction  obtained by dividing the total number of leasable square feet of space
contained  in the  Premises  by the total  leasable  area  contained  within the
Building from time to time.  Tenant's Pro-Rata Share is estimated to be 3.05% of
the Annual Operating Costs for the Building and the Property on the date of this
Lease.

         Annual  Operating  Costs as used  herein  shall  include  all  costs of
operation,  maintenance and repair of the Building and its  appurtenances  as an
office  building,  comparable to similar office  buildings and shall include the
following  by way of  illustration  but not  limitation:  Real Estate  Taxes (as
hereinafter defined), personal property taxes, insurance, and the cost of labor,
materials  and  services  for  the  operation,  maintenance  and  repair  of the
Building,  its appurtenances and parking areas (including  painting and papering
of common  areas  and  replacement  of carpet  and  flooring  in common  areas),
including,  but not  limited  to,  water and sewer  charges,  garbage  and waste
disposal,  license,  permit and inspection  fees, heat,  light,  power and other
utilities,  chillers,  air  conditioning  and  ventilation,   elevator  service,
plumbing  service,  window cleaning  service,  janitorial and cleaning  service,
maintenance and service contracts customarily  maintained for similar buildings,
landscaping  (including  upgrades and replacements  thereto),  security service,
watchmen, guards, and any other personnel engaged in the operation,  maintenance
or repair of the Building and its  appurtenances  together  with payroll  taxes,
insurance and employee benefits applicable thereto. Also included are management
expenses  and fees,  legal and  accounting  fees,  the  Landlord's  general  and
administrative expenses and a reserve for parking facilities and roof repairs of
two cents ($.02) per square foot of rentable area. In addition, Annual Operating
Costs shall include (i) depreciation for capital  expenditures  made by Landlord
to reduce operating  expenses if Landlord shall have reasonably  determined that
the annual reduction in operating expenses shall exceed  depreciation  therefor;
depreciation  shall be  determined by dividing the original cost of such capital
expenditure  by the number of years of useful life of the capital item  acquired
and the useful life shall be  reasonably  determined  by Landlord in  accordance
with  generally  accepted  accounting  principles and practices in effect at the
time  of  acquisition  of the  capital  item,  and  (ii)  the  cost  of  capital
improvements  made in  order to  comply  with  statutes,  rules,  regulation  or
directives  hereafter  promulgated by any governmental  authority after the Rent
Commencement  Date,  relating  to energy  conservation,  public  safety or other
reason. Any of the services,  supplies or materials which may be included in the
computation  of Annual  Operating  Expenses for the Property may be performed by
subsidiaries or affiliates of Landlord.  Expenses related to a specific tenant's
premises  which are not of general  benefit to the other tenants of the Building
and  legal  fees  incurred  in  connection  with  other  tenant's  leases or the
enforcement thereof shall not be included in Annual Operating Costs.

         . The term "Real Estate  Taxes" means all taxes rates and  assessments,
general and special,  levied or imposed with respect to the land,  buildings and
improvements  of which the Premises are a part,  including all taxes,  rates and
assessments,  general  and  special,  levied  or  imposed  for  schools,  public
betterment,  general or local  improvements  and operations and taxes imposed in
connection  with any  special  taxing  district.  If the  system of real  estate
taxation  shall be  altered or varied and any new tax or levy shall be levied or
imposed  on  said  land,   buildings  and   improvements,   and/or  Landlord  in
substitution  for real estate taxes  presently  levied or imposed on fixtures in
Fairfax County, Virginia, then any such new tax or levy shall be included within
the term "Real Estate Taxes".  Should any  governmental  taxing authority acting
under  any law or  regulation,  levy,  assess,  or impose a tax,  excise  and/or
assessment  however  described  (other  than an income or  franchise  tax) upon,
against,  on account of, or measured by, in whole or in part, the rent expressly
reserved hereunder, or upon the rent expressly reserved under any other lease or
leasehold  interests  in the  Premises,  the Building or the land upon which the
Building is located, as a substitute (in whole or in part) or in addition to any
existing  real estate  taxes on land with  buildings or  otherwise,  such tax or
excise on rents shall be included  within the term "Real Estate  Taxes".  Actual
and reasonable expenses  (consisting of reasonable  attorneys' fees,  consulting
fees, expert witness fees and similar costs) incurred by Landlord to monitor the
Real Estate  Taxes or in obtaining  or  attempting  to obtain a reduction of any
Real Estate  Taxes shall be added to and included in the amount of any such Real
Estate  Taxes.  Real Estate Taxes which are being  contested  by Landlord  shall
nevertheless  be included for purposes of the  computation  of the  liability of
Tenant under this paragraph,  provided,  however,  that in the event that Tenant
shall have paid any amount of increased  rent pursuant to this  paragraph e. and
the Landlord shall thereafter receive a refund of any portion of any Real Estate
Taxes on which such payments shall have been based, Landlord shall pay to Tenant
the Tenant's Pro-Rata Share of such refund. Landlord shall have no obligation to
contest,  object to or  litigate  the levying or  imposition  of any Real Estate
Taxes and may settle,  compromise,  consent to, waive or otherwise  determine in
its  discretion,  to abandon any contest  with respect to the amount of any Real
Estate Taxes without  consent or approval of the Tenant;  provided  however that
Tenant's  pro rata share of expenses  related to an appeal of Real Estate  Taxes
which is abandoned by Landlord shall not exceed Ten Thousand Dollars  ($10,000).
If under  Fairfax  County or Virginia  law or  regulations,  the Tax Assessor is
required to include  leasehold (real  property)  improvements in determining the
assessed value of the Building,  then to the extent that Tenant makes  leasehold
improvements  (including Tenant's original  installation and Tenant's subsequent
alterations,  additions,  substitutions and improvements) which are in excess of
the building  standards,  whether done prior to or after the commencement of the
term of this Lease,  Tenant shall pay the Real Estate Taxes  attributable to the
value of such excess  leasehold  improvements  throughout the term of this Lease
within thirty (30) days after being billed therefor by Landlord.

         . Notwithstanding  anything set forth in Article 5 to the contrary,  of
the average  occupancy level of the Building for any calendar is less than 100%,
the  Operating  Expenses  for  such  calendar  year  shall be  increased  by the
additional Operating Expenses,  as reasonably estimated by Landlord,  that would
have been incurred by Landlord in providing the same services provided to Tenant
(and  include in  Operating  Expenses)  if the  average  occupancy  level of the
Building for the  calendar  year had been 100%.  For  purposes of the  preceding
sentence, the "average occupancy of the Building" for any calendar year shall be
the arithmetic  average of the Building Rentable Area occupied by tenants on the
first day of each month during the calendar year.

         . Tenant,  upon not less than ten (10) days written notice to Landlord,
shall  have  reasonable  access  during  normal  business  hours  in  Landlord's
headquarters  office to inspect the books and  records of  Landlord  relating to
Annual  Operating  Costs  and/or  to have  such  books and  records  audited  or
reviewed, at Tenant's expense, for the purpose of verifying the Annual Operating
Costs  statement.  Tenant  shall  bear all costs  relating  to such  inspection,
including, but not limited to, costs of photocopies. Any discrepancy in Tenant's
Proportionate Share shall be promptly corrected by a payment of any shortfall to
Landlord by Tenant within thirty (30) days after the applicable  audit,  or by a
credit  against the next  payment(s)  of Annual  Operating  Costs due under this
Lease,  Tenant  shall keep the  results of any audit of Annual  Operating  Costs
confidential.

 . Additional  Rent. Any amounts  required to be paid by Tenant hereunder and any
charges or expenses  incurred by Landlord on behalf of Tenant under the terms of
this Lease shall be considered  additional rental payable in the same manner and
upon the same terms and conditions as the rent reserved  hereunder.  Any failure
on the part of Tenant to pay such  additional  rental when and as the same shall
become  due  shall  entitle  Landlord  to  the  remedies  available  to  it  for
non-payment of rent.

 . Laws and Ordinances.  . Tenant will, at its own cost, promptly comply with and
carry out all orders,  requirements or conditions now or hereafter  imposed upon
it by the ordinances,  laws and/or  regulations of the Commonwealth of Virginia,
whether required of Landlord or otherwise,  in the conduct of Tenant's business.
Tenant will indemnify and save Landlord harmless from all penalties, claims, and
demands resulting from Tenant's failure or negligence in this respect.

         . Landlord  shall comply with all laws and  regulations  with regard to
the Common Area of the Building and  structural  portions of the Building  which
Landlord is required to repair pursuant to the terms of this Lease. In addition,
Landlord shall cause the Common  Facilities to conform to all  applicable  legal
and  insurance  requirements,  including  the Americans  with  Disabilities  Act
("ADA"),  and the Board of Insurance  Underwriters.  Landlord will indemnify and
save Tenant  harmless  from all  penalties,  claims and demands  resulting  from
Landlord's failure or negligence in this respect.

 .        Furniture; Fixtures; Electrical Equipment.

         .  Tenant  shall  not  place a load  upon  the  floor  of the  Premises
exceeding  one hundred  (100)  pounds per square foot without  Landlord's  prior
written consent. Business machines, mechanical equipment and materials belonging
to  Tenant  which  cause  vibration,  noise,  cold,  heat or  fumes  that may be
transmitted  to the  Building  or to any other  leased  space  therein to such a
degree as to be objectionable to Landlord or to any other tenant in the Building
shall be placed,  maintained,  isolated,  stored  and/or vented by Tenant at its
sole expense so as to absorb and prevent such  vibration,  noise,  cold, heat or
fumes.  Tenant  shall  not keep  within  or about the  Premises  any  dangerous,
inflammable,  toxic or explosive  material  beyond  standard  office  materials,
except in strict  compliance  with law and in amounts  commonly  found in office
buildings similar to the Building.  Tenant shall indemnify  Landlord and hold it
harmless against any and all damage, injury, or claims resulting from the moving
of Tenant's equipment,  furnishings and/or materials into or out of the Premises
or from the storage or  operation  of the same.  Any and all damage or injury to
the Premises or the Building  caused by such moving,  storage or operation shall
be repaired by Tenant at Tenant's  sole cost.  If Tenant  fails to make any such
repairs,  Landlord may do so and Tenant agrees to immediately reimburse Landlord
for any expenses so incurred.

         . Tenant will not install or operate in the Premises  any  electrically
operated equipment,  mainframe computers or other machinery, other than electric
typewriters,  personal computers,  adding machines,  standard office duplicating
machines and such other small electrically  operated office equipment as is used
in modern  offices  without  first  obtaining  the prior  consent  in writing of
Landlord,  who may  condition  such consent upon the  installation,  at Tenant's
expense,  of separate  metering  devices and the payment by Tenant of additional
rent as compensation for such excess  consumption of water and/or electricity or
wiring as may be occasioned  by the operation of said  equipment or machinery or
the installation of additional  metering  devices;  nor shall Tenant install any
other  equipment   whatsoever   which  will  or  may  necessitate  any  changes,
replacements or additions to the water system,  plumbing system, heating system,
air  conditioning  system or the electrical  system of the Premises  without the
prior written consent of Landlord.

 .        Alterations.

         . Tenant shall make no alterations or changes, structural or otherwise,
except  for  non-structural  alterations  which are  cosmetic  in nature  (i.e.,
consisting  of  painting  and  carpeting)  to any part of the  Premises,  either
exterior or interior,  without Landlord's  written consent.  In the event of any
such  approved  changes,  Tenant  shall  have all work done at its own  expense.
Request  for such  consent  shall be  accompanied  by plans  stating  in  detail
precisely  what is to be done.  Tenant  shall  comply with the  building  codes,
regulations and laws now in force or hereafter enacted in Fairfax County and the
Commonwealth   of  Virginia   which  pertain  to  such  work.   Any   additions,
improvements,  alterations  and/or  installations  made by Tenant  (except  only
office furniture,  business and trade fixtures or any equipment  including,  but
not limited to,  telecommunications  equipment and related  wiring) shall become
and remain a part of the Building and be and remain Landlord's property upon the
termination of Tenant's occupancy of the Premises;  provided,  however,  that if
Landlord gives written  notice to Tenant at the expiration or other  termination
of this  Lease to such  effect  then,  it may  require  Tenant to  restore  said
Premises to the same  condition  which  existed on the date Tenant  occupied the
Premises for the conduct of business at Tenant's  sole cost and expense,  except
for ordinary wear and tear; provided,  however that unless Landlord shall advise
Tenant at the time of Landlord's consent to any such addition,  alteration, that
such  addition,  alteration,  etc. will be required to be removed by Tenant upon
the  expiration or  termination  of this Lease,  Tenant shall not be required to
remove any such alteration or addition. Tenant shall save Landlord harmless from
and against all expenses,  liens, claims or damages to either property or person
which  may or might  arise  by  reason  of the  making  of any  such  additions,
improvements,  alterations  and/or  installations.  If any alteration  requiring
Landlord's  consent is made  without  the prior  written  consent  of  Landlord,
Landlord may correct or remove the same,  and Tenant shall be liable for any and
all expenses incurred by Landlord in the performance of this work. It is further
understood  and agreed by  Landlord  and Tenant  that any  alterations  shall be
conducted  on behalf of Tenant  and not on  behalf of  Landlord.  It is  further
understood and agreed that in the event Landlord shall give its written  consent
to Tenant's making any alterations,  such written consent shall not be deemed to
be an  agreement  or consent by Landlord to subject  Landlord's  interest in the
Premises or the Building to any  mechanic's  liens which may be filed in respect
of any  alterations  made  by or on  behalf  of  Tenant.  If any  mechanic's  or
materialman's lien (or a petition to establish such lien) is filed in connection
with any Alteration,  then such lien (or petition) shall be discharged or bonded
by Tenant at  Tenant's  expense  within  ten (10) days  after  Tenant has notice
thereof by the  payment  thereof or the filing of a Letter of Credit  reasonably
acceptable to Landlord. If Tenant shall fail to discharge any such mechanic's or
materialman's lien,  Landlord may, at its option,  discharge such lien and treat
the cost thereof  (including  reasonable  attorneys' fees incurred in connection
therewith) as additional rent payable with the next monthly  installment of Base
Rent  falling  due; it being  expressly  agreed that such  discharge by Landlord
shall not be deemed to waive or release the default of Tenant in not discharging
such lien. Landlord reserves the right to change,  increase or reduce, from time
to time, the number,  composition,  dimensions or location of any parking areas,
signs,  the Building  name,  service areas,  walkways,  roadways or other common
areas or make  alterations or additions to the Building,  in its sole discretion
provided,  however,  that if such changes (i)  materially  and adversely  affect
Tenant's use of the Premises, or the parking or common areas, or (ii) materially
reduce the Building's level of common area finishes and services, Landlord shall
not make such  changes  without  Tenant's  prior  approval,  which  shall not be
unreasonably withheld, conditioned or delayed.

         . Notice of  Non-Liability.  Notice is hereby given that Landlord shall
not be liable for any labor or materials  furnished or to be furnished to Tenant
upon  credit,  and  that no  mechanics'  or other  lien  for any  such  labor or
materials shall attach to or affect the estate or interest of Landlord in and to
the Premises.  Whenever and as often as any lien arising out of or in connection
with any work performed,  materials  furnished or obligations  incurred by or on
behalf  of  Tenant  shall  have  been  filed  against  the  Premises,  or if any
conditional  bill of sale shall have been filed for or affecting any  materials,
machinery or fixtures used in the construction,  repair or operation thereof, or
annexed thereto by Tenant,  Tenant shall forthwith take such action by Letter of
Crediting,  deposit or payment as will remove or satisfy the lien or conditional
bill of sale  within  ten (10)  days of  Landlord's  written  request  therefor,
notwithstanding.  nothing contained herein shall limit Tenant's right to contest
such lien.

         .  No  approval  of  plans  by  Landlord   shall  be  deemed  to  be  a
representation  or warranty by Landlord that such plans or the work provided for
therein  will  comply  with  applicable  codes,  laws  or  regulations  or be in
conformance with any insurance or other  requirements which affect the Premises,
and  Tenant  shall  have  the sole  responsibility  of  complying  with all such
requirements notwithstanding Landlord's approval of Tenant's plans.

 .  Damage.  . If the  Premises  are  damaged by fire or other  cause  covered by
Landlord's  policy of fire  insurance  with extended  coverage or other property
damage insurance carried by Landlord, the damage shall be repaired by and at the
expense of Landlord and the rent until such  repairs  shall have been made shall
abate  pro-rata  according  to the part of the  Premises  which is  unusable  by
Tenant.  However,  if such damage was caused by the  negligence  of Tenant,  its
employees, agents, contractors, visitors or licensees, then all rentals shall be
payable by Tenant during such period. Due allowance shall be made for reasonable
delay which may arise by reason of adjustment of fire insurance by Landlord, and
for  personnel  delay on account of "labor  troubles"  or any other cause beyond
Landlord's control.  If, however,  the Premises are rendered wholly untenantable
by fire or other cause and Landlord  shall decide not to rebuild the same, or if
the entire  Building be so damaged that Landlord  shall decide to demolish it or
not to rebuild it, then or in any of such events,  Landlord  may, at its option,
cancel  and  terminate  this  Lease by giving  Tenant  notice in  writing of its
intention to cancel this lease, whereupon the term of this Lease shall terminate
upon the  thirtieth  (30th) day after  such  notice is given,  and Tenant  shall
vacate  the  Premises  and  surrender  the same to  Landlord.  In neither of the
certain  contingencies in this paragraph  mentioned shall there be any liability
on the part of  Landlord to Tenant  covering or in respect of any period  during
which the  occupation of said Premises by Tenant may not be possible  because of
the  matters  hereinabove  stated,  nor shall  Landlord be liable for any damage
incurred by Tenant other than  Landlord's  obligation  to repair the Premises as
aforesaid.

         . Notwithstanding  anything to the contrary contained in this Lease, if
the Premises are damaged or destroyed by fire,  accident,  the elements or other
casualty  (a  "Casualty")  to the extent that it will not be possible to rebuild
the  Premises  within  one  hundred  eighty  (180)  days  after  the date of the
Casualty,  Landlord  shall  notify  Tenant  within  thirty  (30) days after such
Casualty of  Landlord's  good faith  estimate  of the time  needed to  undertake
reconstruction of the Premises.  If (i) Tenant is not then in default under this
Lease beyond the expiration of any applicable  notice and cure period,  and (ii)
the damage was not caused by Tenant's negligence or willful  misconduct,  Tenant
shall have the right to  terminate  this Lease by giving to  Landlord  notice of
such termination within fifteen (15) days after Landlord provides notice of such
good faith  estimate.  In the event that  Landlord  or Tenant do not  exercise a
right of  termination  as  provided in this Lease,  Landlord  shall  commence to
repair the damage caused by such Casualty and, thereafter,  shall diligently and
continuously pursue completion of such repairs,  within the estimated completion
date as set forth in  Landlord's  notice.  If  Landlord  fails to  substantially
complete the repairs within the estimated completion date, Tenant shall have the
right and option, as its sole and exclusive remedy upon no less than thirty (30)
days prior notice to Landlord to terminate this Lease;  provided,  however, that
any  termination  of this  Lease by  Tenant  shall be null and void if  Landlord
substantially  completes  repairs  within  thirty  (30) days  after  receipt  of
Tenant's notice of termination.

 .        Condemnation

         .  If  the  Premises  or  any  part  thereof  shall  be  taken  by  any
governmental or  quasi-governmental  authority  pursuant to the power of eminent
domain,  or by  deed in lieu  thereof,  Tenant  agrees  to  make  no  claim  for
compensation in the proceedings, and hereby assigns to Landlord any rights which
Tenant may have to any portion of any award made as a result of such taking with
respect to the real property, including, without limitation, with respect to the
real  property  including,  without  limitation,  the  Building and the Tenant's
leasehold,  and this Lease shall  terminate  as to the  portion of the  Premises
taken by the  condemning  authority  and rental shall be adjusted to the date of
such taking,  but Tenant  shall be  permitted  to file a separate  claim for any
personal  property  of Tenant  which is taken.  The  foregoing  notwithstanding,
Tenant  shall be  entitled  to claim,  prove  and  receive  in the  condemnation
proceedings  such  awards as may be  allowed  for  relocation  expenses  and for
fixtures and other equipment installed by it which shall not, under the terms of
this Lease, be or become the property of Landlord at the termination hereof, but
only if such awards shall be made by the  condemnation  court in addition to and
stated  separately  from the award made by it for the land and the  building  or
part thereof so taken.  Tenant  shall have the right to terminate  this Lease if
the portion of the Property,  Building or Premises taken  materially  interferes
with Tenant's use of the Premises.

         . If the nature,  location or extent of any condemnation  affecting the
Building is such that  Landlord  elects in good faith to demolish the  Building,
then  Landlord  may  terminate  this  Lease by giving at least  sixty (60) days'
written notice of termination to Tenant at any time after such  condemnation and
this Lease shall terminate on the date specified in such notice.

 . Use of Premises.  The Premises shall be used and occupied by Tenant solely for
the  purpose of general  office use and as  permitted  in Article 56, and for no
other purpose  whatsoever.  Tenant shall permit  Landlord to transmit  heat, air
conditioning  and  electric  current  through  the  Premises  at  all  times  at
Landlord's discretion. The Premises shall not be used for any illegal purpose or
in violation of any valid regulation of any governmental  body, or in any manner
to (i) create any nuisance or trespass;  (ii) annoy or embarrass Landlord or any
other tenant of the  Property;  (iii) vitiate any  insurance;  or (iv) alter the
classification  or  increase  the rate of  insurance  on the  Building to a rate
greater than payable for similar buildings.

 . Repairs by Tenant.  Tenant  agrees to maintain  the  Premises and the fixtures
therein in good order and in a condition commensurate with comparable or similar
office buildings during the term of this Lease at its sole cost and expense, and
will, at the expiration or other  termination of the term hereof,  surrender and
deliver up the same and all keys, locks and other fixtures  connected  therewith
(except  only  office  furniture,   business   equipment,   trade  fixtures  and
telecommunications equipment, cable and wiring, but Tenant shall repair any such
damage caused by such  removal) in like good order and  condition  ordinary wear
and tear excepted. With respect to property damage only, Landlord will be liable
for  property  damage  caused by the  negligence  of  Landlord  or its agents or
employees, subject, however, to the waiver of subrogation set forth in paragraph
18.e.

 . Repairs by Landlord. Landlord shall have no duty to Tenant to make any repairs
or improvements to the Premises except  structural  repairs necessary for safety
and  tenantability,  and then only if not brought about by any act or neglect of
Tenant, its agents, employees or invitees.  Landlord shall not be liable for any
damage  (including  any  consequential  damages or lost  profits)  caused to the
property of Tenant,  its agents,  employees or invitees,  due to the Building or
any part of  appurtenances  thereof  being  improperly  constructed  or being or
becoming  out of repair,  or arising  from the leaking of gas,  water,  sewer or
steam pipes, or from electricity, or from any other cause whatsoever, and Tenant
agrees to look solely to its own insurance for  compensation for any such damage
or loss. Tenant agrees to endeavor to report  immediately in writing to Landlord
any defective condition in or about the Premises known to Tenant.

 .        Roof Rights.  Except as provided in Article 54, Landlord shall have the
exclusive right to use all or any portion of the roof of the Building for any 
purposes.

 . Landlord's  Remedies  Upon  Default.  In the event Tenant shall default in the
payment,  when  due,  of any  installment  of rent or  other  charges  or  money
obligation to be paid by Tenant hereunder (all of which monetary  obligations of
Tenant shall bear  interest at the highest rate  allowable by law, not to exceed
eighteen  percent (18%) per annum,  from the date due until paid in full) within
five (5) business days after the date any such amount is due; provided, however,
that Tenant  shall not be in default  with respect to the first two (2) monetary
payments  received  after  such five (5) day period in any Lease Year until five
(5) days after Tenant's  receipt of written  notice of such late payment;  or if
Tenant shall default in performing any of the covenants,  terms or provisions of
this Lease  (other  than the  payment,  when due,  of any of  Tenant's  monetary
obligations  hereunder)  or any of the Rules and  Regulations  now or  hereafter
established  by Landlord to govern the  operation  of the  building and fails to
cure such default  within 30 calendar  days after  written  notice  thereof from
Landlord;  provided, however, that, solely with respect to non-monetary defaults
which  cannot with due  diligence  and best  efforts be cured within such thirty
(30) day period if,  within  such thirty (30) day period  Tenant  commences  and
thereafter diligently pursues the cure of any such non-monetary default,  Tenant
shall be granted an additional reasonable period of time to effect a cure; or if
Tenant shall abandon the Premises and discontinue timely rental payments;  or if
Tenant is  adjudicated a bankrupt;  or if a permanent  receiver is appointed for
Tenant's  property;  or if, whether  voluntarily or involuntarily,  Tenant takes
advantage  of any debtor  relief  proceedings  under any  present or future law,
whereby  the rent or any part  thereof,  is or is  proposed  to be,  reduced  or
payment  thereof  deferred;  or if Tenant makes an assignment for the benefit of
creditors or if Tenant's  property or effects  should be levied upon or attached
under process against Tenant, not satisfied or dissolved within 10 calendar days
after  written  notice from Landlord to Tenant to obtain  satisfaction  thereof;
then, and in any of said events,  Landlord,  at its option may pursue any one or
more of the following remedies without any notice or demand whatsoever:

         .  Landlord,  at its  option,  may at once,  or at any time  thereafter
terminate this Lease by written notice to Tenant, whereupon this Lease shall end
concurrently with the receipt by Tenant of such notice. Upon such termination by
Landlord,  Tenant will at once surrender  possession of the Premises to Landlord
and remove  all of  Tenant's  effects  therefrom,  and  Landlord  may  forthwith
re-enter the Premises and repossess himself thereof,  and remove all persons and
effects therefrom, using such force as may be necessary, without being guilty of
trespass, forcible entry, detainer or other tort.

         . Landlord may,  without  terminating  this Lease,  enter upon and take
possession  of the Premises and expel or remove  Tenant and any other person who
may be occupying  the  Premises or any part  thereof,  without  being liable for
prosecution or any claim for damages therefor,  and, if Landlord so elects, make
such  alterations  and repairs as, in Landlord's  judgment,  may be necessary to
relet the  Premises,  and relet such space or any part thereof for such rent and
for such period of time and subject to such terms and conditions as Landlord may
deem advisable and receive the rent therefor. Upon each such reletting, all rent
received by Landlord from such  reletting  shall be applied first to the payment
of any  indebtedness  other than rent due  hereunder  from  Tenant to  Landlord,
including  interest  thereon;  second,  to the payment of any loss or expense of
such  reletting,   including   brokerage  fees,   reasonable   attorneys'  fees,
advertising and promotion expenses and the cost of such alterations and repairs;
third, to the payment of rent due and unpaid  hereunder,  together with interest
thereon as herein provided;  and the residue,  if any, shall be held by Landlord
and  applied in payment  of future  rent as the same may become due and  payable
hereunder.  Tenant agrees to pay to Landlord, on demand, any deficiency that may
arise by reason of such reletting.  Notwithstanding  any such reletting  without
termination,  Landlord may at any time thereafter  elect to terminate this Lease
for such prior default.

         . In the event Landlord  terminates  this Lease in accordance  with the
provisions of this  paragraph 16,  Landlord may, in addition to any other remedy
it may have, recover from Tenant all damages and expenses Landlord may suffer or
incur by reason of Tenant's default hereunder,  including,  without  limitation,
the cost of recovering.  the Premises,  reasonable attorneys' fees and the worth
at the time of such termination of the excess, if any, of the amount of rent and
charges  equivalent  to the rent reserved in this Lease for the remainder of the
stated  term  over the then  reasonable  rental  value of the  Premises  for the
remainder of the stated term based upon a reduction to present value calculation
at the rate of ten percent (10%), all of which sums shall become immediately due
and payable by Tenant to Landlord upon demand of Landlord.

         . Anything in this Lease to the contrary  notwithstanding,  in order to
cover the extra expense involved in handling delinquent  payments,  Tenant shall
pay a "late charge" of Two Hundred Fifty and No/100  Dollars  ($250.00) when any
installment of rent (basic or otherwise,  as may be considered additional rental
under this Lease) is paid more than seven (7)  business  days after the due date
thereof. It is hereby understood that this charge is for extra expenses incurred
by the  Landlord  in  processing  the  delinquency  and shall not be  considered
interest.

         . Pursuit of any or the foregoing  remedies shall not preclude Landlord
from pursuing any other  remedies  herein or at law or in equity  provided,  nor
shall pursuit of any remedy by Landlord constitute a forfeiture or waiver of any
rent due to Landlord  hereunder or of any damages accruing to Landlord by reason
of Tenant's violation of any of the covenants and provisions of this Lease.

 . Services of Landlord.  . Landlord shall furnish  reasonably  adequate electric
current,  elevator  service,  water and lavatory supplies during normal business
hours, and normal and usual cleaning and janitorial service for the Premises and
Building  Common Areas only after  business  hours.  Landlord  further agrees to
furnish heat and air  conditioning  in its  reasonable  judgment  sufficient  to
reasonably  cool or heat the  Premises  from 8:00  a.m.  to 6:00  p.m.,  Mondays
through  Fridays,  inclusive;  and from 9:00 a.m. to 1:00 p.m.,  Saturdays (said
services not being furnished on Sundays or legal holidays),  provided,  however,
that  Landlord  shall not be liable for failure to furnish or for  suspension or
delay in furnishing  such services  clue to  breakdown,  maintenance,  or repair
work,  strike,  riot,  civil commotion,  governmental  action or any other cause
beyond the reasonable  control of Landlord,  or for interruptions of service for
reasonable  periods in connection with  construction work being performed in the
Building,  notwithstanding,  Landlord shall use reasonable efforts not to affect
Tenant's  use  of  Building/Premises  as a  result  of  above.  Interruption  of
service(s) that continues beyond three (3) consecutive days shall entitle Tenant
to an abatement of rent.

         . If Landlord  defaults in its  obligations  to maintain and repair the
Premises in accordance  with the  provisions of this Lease,  and such failure of
Landlord will have a material  adverse effect on Tenant's ability to operate its
business in the Premises,  and any such failure continues for a period in excess
of Thirty (30) days after  Landlord  receives  Tenant's  written  notice of such
default,  then  Tenant  may,  at its  option and at its risk,  perform  any such
maintenance or repairs; provided,  however, that if any such default of Landlord
cannot  with due  diligence  and  commercially  reasonable  efforts  be cured by
Landlord within the thirty (30) day period after receipt of Tenant's notice, the
period for cure by Landlord  shall be extended  if,  within such thirty (30) day
period Landlord commences and thereafter diligently pursues the cure of any such
default.

         . If Tenant elects to cure a default of Landlord,  then the  reasonable
costs  incurred by Tenant in curing any default of Landlord in  accordance  with
paragraph (b) above shall be reimbursed to Tenant by Landlord within thirty days
after Landlord's receipt of (i) Tenant's invoice for such costs, and (ii) copies
of  paid  invoices  for all  such  work  or  expenses  incurred,  and  (iii)  if
applicable,  lien  waivers  from  all  contractors,   subcontractors,   material
suppliers or other parties  having lien rights  involved in the  performance  of
such work.  Tenant shall defend,  indemnify and save Landlord  harmless from and
against  any  and  all  claims,  actions,  damages,  liability  and  expense  in
connection  with loss of life,  personal injury and/or damage to or interference
with  property  or the  premises  of other  tenants  arising  from or out of any
exercise of any rights granted to Tenant under this Article 17.

         . Pursuit of any of the foregoing  remedies  shall not preclude  Tenant
from pursuing any other  remedies  herein or at law or in equity  provided,  nor
shall  pursuit of any remedy by Tenant  constitute a forfeiture or waiver of any
amount due to Tenant hereunder or of any damages accruing to Tenant by reason of
Landlord's violation of any of the covenants and provisions of this Lease.

         . If Landlord  defaults in its  obligations  to maintain and repair the
Building in accordance  with the  provisions of this Lease,  and such failure of
Landlord will have a material  adverse effect on Tenant's ability to operate its
business in the Premises,  and any such failure continues for a period in excess
of thirty (30) days after  Landlord  receives  Tenant's  written  notice of such
default,  then Tenant may pursue any remedy  available  at law or in equity with
respect to such default of Landlord; provided, however, that if any such default
of Landlord  cannot with due diligence and  commercially  reasonable  efforts be
cured by Landlord  within the thirty (30) day period  after  receipt of Tenant's
notice, the period for cure by Landlord shall be extended if, within such thirty
(30) day period Landlord commences and thereafter diligently pursues the cure of
any such default.

 .        Insurance.

         . Tenant agrees that it will indemnify and save Landlord  harmless from
any and all liabilities,  damages,  causes of action, suits, claims,  judgments,
costs  and  expenses  of any kind  (including  reasonable  attorneys'  fees) (i)
relating  to or  arising  from  or  in  connection  with  the  possession,  use,
occupation,  management,  repair,  maintenance or control of the Premises or any
portion thereof,  or (ii) arising from or in connection with any act or omission
or Tenant or Tenant's agents, employees or invitees, or (iii) resulting from any
injury to person or property or loss of life sustained in or about the Premises.
To assure such  indemnity,  Tenant shall carry and keep in full force and effect
at all times  during the term of this Lease for the  protection  of Landlord and
Tenant herein,  commercial  general liability  insurance with limits of at least
Two Million Dollars  ($2,000,000.00)  combined single limit for each occurrence,
with an approved insurance company,  and Tenant shall deliver to Landlord a copy
of said policy or a certificate  showing the same to be in full force and effect
prior to the Rent Commencement Date and at least annually thereafter.

         .  Throughout  the Lease  Term,  Tenant  shall  insure,  for their full
insurable value, the contents of the Premises,  including furnishings,  fixtures
and equipment  used or installed in the Premises by or on behalf of Tenant,  and
the other personal property of Tenant in the Premises,  against loss due to fire
and other casualties included in broad form property insurance policies, with an
agreed amount endorsement and replacement cost coverage.

         . Said public liability and property damage insurance  policies and any
other insurance  policies carried by Tenant with respect to the Premises,  shall
(i) be issued by good and solvent insurance  companies  qualified to do business
in the Commonwealth of Virginia and reasonably satisfactory to Landlord; (ii) be
written as primary policy coverage and not contributing with or in excess of any
coverage  which  Landlord may carry;  (iii)  provide for at least 30 days' prior
written  notice to  Landlord of any  cancellation  or other  expiration  of such
policy or any defaults  thereunder,  Tenant's  liability  insurance policy shall
name Landlord and Landlord's  managing  agent (and, if so requested,  Landlord's
mortgagee) as additional insureds.  Neither the issuance of any insurance policy
required hereunder,  nor the minimum limits specified herein with respect to the
Tenant's  insurance  coverage,  shall be deemed to limit or  restrict in any way
Tenant's liability arising under or out of this Lease.

         . Landlord shall maintain (i) public liability  insurance on the common
areas of the Building in amounts not less than those set forth in paragraph  (a)
of this Article 18 and (ii) Property  Insurance for full replacement cost of the
Building in an amount sufficient to avoid co-insurance.

         . () To the extent permitted by law, each of Landlord and Tenant hereby
releases the other,  to the extent of all  insurance  carried (or required to be
carried)  by each party under the terms of this Lease,  from  liability  for any
loss or  damage  caused  by fire or other  of the  extended  casualties  insured
against; provided,  however, that this release shall be in force and effect only
with  respect  to loss or damage  occurring  during  such time as the  releasing
party's  insurance  policy  contain a clause or clauses which provides that: (i)
the insurance  company  waives  subrogation  or consents to a waiver of right of
recovery,  and (ii) such waiver of subrogation or consent to a waiver of a right
of recovery does not adversely  affect or prejudice said policy or the releasing
party's right of full recovery  thereunder.  Landlord's  release of Tenant under
this  subparagraph  (e) is expressly  conditioned upon Tenant's full cooperation
with  Landlord's  insurance  carrier in inspections of the Premises and Tenant's
compliance with all requirements  imposed by Landlord's  insurance  carrier with
respect to any activities in or use of the Premises which  increases the risk of
loss to the Building, Property or the Premises.

         () If it party  advises  the  other  party  that a  clause  of the type
described in paragraph (1) above is (i) not obtainable,  or (ii) only obtainable
at additional  cost,  then such party shall not be obligated to obtain a waiver;
provided,  however,  that with respect to an inability to obtain a waiver due to
the imposition of additional  cost,  the party shall  promptly  notify the other
party of the amount of such  additional cost and, if the party desiring that the
other  party  obtain a waiver  agrees in writing to pay the  additional  cost of
obtaining  the waiver,  then,  upon  receipt of such  payment,  that party shall
obtain a waiver of subrogation  for the benefit of the other party, as described
in  paragraph  (1) above.  To the extent that either  party is permitted to self
insure as to its  personal  property  located in the  Premises,  that party will
nevertheless be deemed to be insured for such personal property for the purposes
of this  subparagraph  (e). . Property at Tenant's  Risk. It is  understood  and
agreed that all personal property in the Premises,  of whatever nature,  whether
owned by Tenant or any other  person,  shall be and remain at Tenant's sole risk
and  Landlord  shall not assume any  liability or be liable for any damage to or
loss of such  personal  property,  arising from the  bursting,  overflowing,  or
leaking  of the roof or of water,  sewer,  or steam  pipes,  or from  heating or
plumbing fixtures,  or from the handling of electric wires or fixtures,  or from
theft or  vandalism  or from any other cause  whatsoever,  unless such damage is
caused by negligence of Landlord, its agents or employees (but expressly subject
to the waiver of subrogation set forth in paragraph 18.e.)

 .  Assignment; Subletting.

         . Neither Tenant, nor any of its permitted successors or assigns, shall
transfer,  assign,  mortgage,  encumber,  or, by operation of law or  otherwise,
pledge,  hypothecate,  or assign all or any of its  interest in this  Lease,  or
subict  or permit  the  Premises,  or any part  thereof,  to be used by  others,
including, but not by way of limitation, concessionaires or licensees of Tenant,
without the prior written consent of Landlord,  in each instance,  which consent
Landlord  shall not  unreasonably  withhold,  condition or delay if Tenant fully
complies with the  requirements of this Article 20 and other  provisions of this
Lease.  Any such  subletting or assignment  shall be referred to as a "Transfer"
(as further defined in this Article 20,  subparagraph (b) below), and the person
to whom Tenant's interest is transferred shall be referred to as a "Transferee".

         .  For the purposes of this Article 20, the term "Transfer" shall also 
include the following circumstances:

         () if Tenant or any  guarantor  of this Lease is a  corporation  (other
than a  corporation,  the  outstanding  voting  stock of which  is  listed  on a
national  securities  exchange,  as defined in the  Securities  Exchange  Act of
1934), if the shares of such  corporation  are transferred by sale,  assignment,
bequest,  inheritance,   operation  of  law  or  otherwise  (including,  without
limitation,  a  transfer  to or by a  receiver  or  trustee  in federal or state
bankruptcy, insolvency or other proceeding), so as to result in or make possible
a change in the present control of such corporation;

         ()  if Tenant or any guarantor of this Lease is a partnership, any 
change in control or ownership of such partnership;

         () any transfer by sale, assignment, bequest, inheritance, operation of
law or other  disposition of all or substantially all of the assets of Tenant or
any guarantor which results in or makes possible a change in the present control
of the business of Tenant or any such guarantor;

         ()  any other change in ownership of Tenant, any guarantor of this 
Lease;

         ()  any subletting or assignment which occurs by operation of law, 
merger, consolidation, or reorganization; or

         ()  any sale of all, or substantially all, of Tenant's assets unless, 
in connection therewith, this Lease is assigned to the acquiring party, as 
provided in paragraph 20(i) below.

         In no event may Tenant assign this Lease, or sublease the Premises,  if
Tenant is in default under this Lease.

         . In the event that  Tenant  desires  to effect a  Transfer  hereunder,
Tenant shall give Landlord written notice (the "Transfer Notice") thereof. To be
effective,  the  Transfer  Notice after the initial  subleasing  effort shall be
accompanied by Tenant's check,  payable to the order of Landlord,  or Landlord's
Agent, in an amount equal to the greater of (i) $500.00 or (ii) one percent (1%)
of the Minimum Rent to compensate Landlord (not to exceed $1500.00) for the cost
of reviewing the proposed Transfer and specify the proposed Transferee,  and the
proposed terms of the Transfer,  and contain such information about the proposed
Transferee,  its experience,  its financial situation, its methods of operation,
and  provided  its  business  operation  being  consistent  with those  found in
comparable  office buildings,  as a prudent  businessman would require in making
the Transfer  decision.  Tenant  specifically  agrees to apprise Landlord of any
adverse or  negative  information  in its  possession  concerning  the  proposed
Transfer and the proposed  Transferee.  The Transfer Notice shall also contain a
certificate by Tenant (or an officer or general partner of Tenant if Tenant is a
corporation or partnership) of all "Transfer  Consideration"  (as defined below,
or payable in connection with the proposed Transfer. Within five (5) days during
the initial subleasing and forty-five (45) days thereafter of the receipt of the
Transfer Notice Landlord shall, by written notice to Tenant, elect (i) to permit
the proposed Transfer;  (ii) to terminate this Lease with respect to the portion
of the  Premises  proposed to be  Transferred,  but Tenant may,  within five (5)
business  days after receipt of Landlord's  notice of  termination,  rescind its
request for consent to a Transfer, in which event this Lease will not terminate;
(iii) to sublet with the right to further  sublet from Tenant for the balance of
the term of this Lease (a) all of the Premises, or (b) only so much of the Lease
Premises  as  Tenant  proposed  to  Transfer,  at the same  rental  as Tenant is
obligated to pay to Landlord hereunder;  or (iv) to deny consent to the proposed
Transfer,  in which event Tenant shall continue to occupy the Lease Premises and
comply  with  all  of the  terms  and  conditions  hereof.  Notwithstanding  the
foregoing, Landlord shall not have the options provided by (ii), (iii), and (iv)
of this subparagraph (c) with regard to the initial subletting of up to one-half
of the Premises as provided in accordance with the provisions of paragraph 20.h.
         . If this Lease is  Transferred  under the definition of a Transfer (as
defined in Article 20,  subparagraphs  (a) and (b)), the Transferee shall assume
by written  instrument  all of  Tenant's  obligations  under this Lease and such
Transferee,  at least five (5) days prior to the effective date of the permitted
Transfer,  shall  deliver to Landlord  the  proposed  sublease,  assignment  and
assumption  agreement  or  other  instrument  evidencing  the  Transfer  and the
Transferee's  undertaking  to perform  Tenant's  obligations  under this  Lease.
Except for the Transfer as permitted in this Article 20,  subparagraph i, all of
such documents shall be subject to Landlord's  prior written  approval not to be
unreasonably  withheld,  conditioned  or delayed.  In the event of any Transfer,
including a permitted  Transfer,  Tenant shall continue to be liable  hereunder,
and shall not be released from  performance  hereunder.  In addition to the Rent
reserved  hereunder,  except as provided in paragraph 20.h.  below and except in
the case of a Transfer  as  specified  in this  Article,  subparagraph  i below,
Tenant shall pay to Landlord all monies,  property  and other  consideration  of
every kind whatsoever paid or payable to Tenant in  consideration  of or related
to such Transfer and for all property  transferred to the Transferee,  as all or
part  of  the  consideration  including,  without  limitation,  fixtures,  other
Leasehold Improvements,  furniture, equipment and furnishings (collectively, all
of the foregoing monies,  property and other  consideration shall be referred to
as the "Transfer Consideration"), but excluding bona fide consideration paid for
transfer of Tenant's property.  Following an assignment of this Lease,  Landlord
shall send the named Tenant any notice of default by the approved Transferee.

         . Any Transfer,  except as provided in  subparagraph  i below,  without
Landlord's consent,  whether as a result of any act or omission of Tenant, or by
operation of law or  otherwise,  shall not be binding upon  Landlord,  and shall
confer no rights upon any third person.  Each such  unpermitted  Transfer shall,
without notice or grace period of any kind, constitute a default by Tenant under
this Lease.  The  acceptance  by Landlord of the payment of Rent  following  any
Transfer  prohibited  by this  Article 20 shall not be deemed to be a consent by
Landlord to any such Transfer,  an acceptance of the  Transferee as a tenant,  a
release of Tenant from the performance of any covenants herein  contained,  or a
waiver by Landlord of any remedy of Landlord under this Lease,  although amounts
actually   received  shall  be  credited  by  Landlord   against  Tenant's  rent
obligations.  Consent by Landlord to any one  Transfer  shall not  constitute  a
waiver of the  requirement  for consent to any other  Transfer.  No reference in
this Lease to  assignees,  concessionaires,  subtenants  or  licensees  shall be
deemed to be a consent by Landlord to the occupancy of the Lease Premises by any
such assignee, concessionaire, subtenant or licensee.

         . If Tenant is a corporation, limited liability company or partnership,
Tenant  represents  that the ownership and power to vote its entire  outstanding
capital stock or partnership  interests  belongs to and is vested in the persons
listed on Exhibit "E". The foregoing  provisions of this paragraph (f) shall not
apply to a publicly  held entity whose  outstanding  voting stock is listed on a
national securities exchange, as defined in the Securities Exchange Act of 1934.

         . If any sublease or assignment provides that the subtenant or assignee
is to pay any  amount in excess of the rent and  other  charges  due under  this
Lease, then whether such excess is in the form of an increased monthly or annual
rental, a lump sum payment (excluding a bona fide security deposit), payment for
the  sale,  transfer  or lease of  Tenant's  fixtures,  leasehold  improvements,
furniture and other personal  property,  but excluding  bona fide  consideration
paid for transfer of Tenant's property,  or any other form (and if the subleased
or assigned space does not constitute the entire Premises, the existence of such
excess  shall be  determined  on a pro rata  basis),  but  excluding  bona  fide
consideration  paid for  transfer  of  Tenant's  property,  Tenant  shall pay to
Landlord  any such excess as  additional  rent no later than ten (10) days after
Tenant's receipt thereof.

         .  Notwithstanding  anything  set  forth  in  this  Article  20 to  the
contrary,  if Tenant fully complies with the requirements and conditions of this
Article 20 and other provisions of this Lease,  then, on one (1) occasion during
the term of this Lease  (including  any Option  Terms),  Tenant may sublease one
half (1/2) or less of the floor area of the Premises,  to multiple tenants,  for
the purpose set forth in this Lease, provided,  however, that in any such event,
Tenant  shall  continue  to  remain  fully  liable  under  this  Lease  for  the
performance of all of the terms contained herein.  Notwithstanding  anything set
forth  herein to the  contrary,  with  respect to the first such  sublease  of a
portion of the  Premises  Landlord  shall not be  entitled to receive any of the
Transfer Consideration,  but after the first such Subletting,  one-half (1/2) of
all Transfer  Consideration  and all rental amounts and any additional  payments
arising  under any  sublease in excess of any rentals  contained  in this Lease,
shall be payable to Landlord. The liability of any Guarantor of this Lease shall
not be affected as a result or any assignment  permitted under this subparagraph
(h). Landlord's agreement to permit a sublease as provided for in this paragraph
shall not create any rights in the  subtenant  against  Landlord  or any privity
between  Landlord and the subtenant  named in the sublease.  In the event of any
conflict  between the provisions set forth in any sublease and the provisions of
this Lease,  the  provisions of this Lease shall control with respect the rights
and remedies of Landlord.  Notwithstanding anything in the foregoing document to
the  contrary,  any  sublease  shall  be  expressly  under  and  subject  to the
provisions  of this  Lease,  and the  sublease  shall not be  deemed  Landlord's
consent to (i) any action of the subtenant provided for in the sublease, or (ii)
the approved or acceptance  by Landlord of any terms or conditions  contained in
the  sublease,  or (iii) the  assumption  of any  obligations  by  Landlord  not
expressly provided for in this Lease.

         . Notwithstanding  anything contained herein to the contrary (including
the obligations any procedures as specified in this Article 20 subparagraphs (c)
or (g)  herein),  Tenant may,  without the prior  written  consent of  Landlord,
assign  this Lease for the use and  occupation  of the  Premises  solely for the
purpose set forth in Article 12 to the following:
         ()  Tenant's parent or subsidiary corporation or to a corporation under
common ownership with and controlled by the same persons who control Tenant, or

         ()  any party which acquires substantially all of the assets of Tenant,
or

         ()  to a corporation into which Tenant merges or consolidates, 
provided, however, that in each such event described in the above subparagraphs 
(i) through (iii):

         () such assignee shall assume in writing all of Tenant's obligations 
hereunder; and

         ()  Tenant  continues  to  remain  liable  under  this  Lease  for  the
performance of all of the terms  contained  herein  including but not limited to
the payment of Base Rent, and all Additional Rent due under this Lease;

         The provisions (i) through (iii) of this paragraph (i) shall not permit
a Transfer  in the event that  Tenant is  acquired  by another  corporation  and
becomes a subsidiary  thereof,  (x) unless Tenant  continues to be operated as a
separately  identified company,  substantially in the same manner as before such
acquisition, or (y) if, after such acquisition, or as a result thereof, Tenant's
net worth will decline by twenty-five percent (25%) or more, unless in such case
of  reduced  net  worth,  the  parent of the party  acquiring  Tenant  agrees to
guaranty  Tenant's  obligations under this Lease. The liability of any Guarantor
of this Lease  shall not be  affected  as a result of any  assignment  permitted
under this subparagraph (i).

         No  Transfer  will be  permitted  under this  subparagraph  (i) if such
Transfer would result in:

         () a  Transfer  of  this  Lease  or  the  ownership  interests  in  any
Transferee to an entity not affiliated with Tenant through common  ownership and
control  (except for a purchase  of  Tenant's  assets,  in  accordance  with the
provisions set forth above), or

         () a Transfer of this Lease to an entity  outside the ownership  family
to which Tenant belongs (except for a purchase of Tenant's assets, in accordance
with  the  provisions  set  forth  above)  as a means  of  defeating  the  other
provisions of this Article 20 which require Landlord's consent to a Transfer.

Liquidated Damages:

Tenant  acknowledges  that it is important to Landlord to know of the occurrence
of an assignment and the identity an assignee,  and that damage to Landlord will
be difficult to  ascertain if Tenant fails to notify  Landlord of an  assignment
permitted  under this  paragraph  20 (i).  Therefore,  if Tenant fails to notify
Landlord of any such  assignment,  Tenant shall be in default  under this Lease;
provided, however, that

(1) if Tenant's failure to notify is due to negligence or  inadvertence,  Tenant
shall pay to Landlord  liquidated damages equal to the lesser of (A) One Hundred
Dollars  ($100.00)  per day for  each  day  after  the  occurrence  of any  such
assignment until Landlord receives notice of the assignment or (B) Five Thousand
Dollars  ($5,000.00),  or (2) Tenant's  failure to notify is intentional  (which
Tenant may contest if Tenant  disputes  Landlord's  claim that such  failure was
intentional),  then  Landlord  shall be entitled to pursue any remedy  available
under this Lease or at law (in equity and/or collect liquidated damages equal to
the  amount  of One  Hundred  Dollars  ($100.00)  per day for each day after the
occurrence  of  any  such  assignment  until  Landlord  receives  notice  of the
assignment.

 .  Signs.

         . No sign, advertisement or notice shall be inscribed, painted, affixed
or displayed  on the windows or exterior  walls of the Premises or on any public
area of the Building, except the directories and the office doors, and then only
in such places, numbers, sizes, colors and style as are approved by Landlord and
which conform to all applicable laws and/or ordinances.

Landlord agrees to install at Tenant's cost signage on the Greensboro Drive side
of the building above the twelfth  (12th) floor parapet on the Greensboro  Drive
side of the building.  This signage shall be  illuminated  (if permitted by law)
and shall not exceed 100 square  feet and design and  location  of  installation
shall be subject to Landlord's approval.

 . Rules and  Regulations.  Tenant  shall at all times  comply with the rules and
regulations  set forth on  Exhibit C  attached  hereto,  and with any  additions
thereto and  modifications  thereof  adopted from time to time by Landlord,  and
each such rule or regulation  shall be deerned to be a covenant of this Lease to
be performed and observed by Tenant.

 .  Intentionally Deleted.

 . Parking.  Tenant may lease from  Landlord,  during the term of this Lease,  no
more than 87 parking  spaces in the  parking  garage  adjacent  to the  Building
without  Landlord's  consent.  All parking spaces are leased on a  non-exclusive
basis,  provided,  however,  Landlord  reserves the right to designate or assign
specific  parking  spaces  for  Tenant's  use or for the use of  other  Building
tenants in a non-discriminatory  manner, and the further right to redesignate or
relocate, from time-to-time,  any such designated or assigned spaces. During the
first Lease Year the monthly  rental for each parking  space leased to Tenant is
Forty  Dollars  ($40.00).  The  aforesaid  parking  space rental shall  escalate
annually by the same percentage,  in the same manner and at the same time as the
Initial Base Rent  escalates  pursuant to paragraph 4 above.  Monthly rental for
parking spaces shall be payable,  in advance,  at the same time that the Initial
Base Rent is  payable.  Tenant will not assign or  sublease  its parking  rights
hereunder, and any attempted assignment or sublease shall be deemed a prohibited
assignment  or sublease  pursuant to the terms of paragraph  20 above.  Landlord
reserves  the right to transfer  the  management  and  operation  of the parking
garage to a third party. Tenant agrees to comply with, and abide by, any and all
reasonable traffic and/or parking rules and regulations imposed by Landlord from
time-to-time   that  do  not  materially   adversely  affect  Tenant's  original
privileges.

 . Landlord  Access.  Landlord may enter the Premises  during business hours with
reasonable advance notice and at Tenant's option, Landlord may be accompanied by
a designated  representative  of Tenant  except in cases of emergency to exhibit
the same to  prospective  purchasers,  mortgagees  or  tenants,  to inspect  the
premises to see that Tenant is complying with all its obligations hereunder,  to
make repairs  required of Landlord  under the terms hereof or to make repairs to
Landlord's adjoining property.

 .  Subordination.

This Lease is subject and subordinate to all ground or underlying  leases and to
all mortgages or deeds of trust,  which may now or hereafter  affect or encumber
the Building or the real  property of which the Premises  form a part and to all
renewals,  modifications,  consolidations,  replacements or extensions  thereof.
This paragraph shall be selfoperative and no further instrument of subordination
shall be  required.  In  confirmation  of any such  subordination,  Tenant shall
execute  within  ten (10)  calendar  days  after  receipt,  any  certificate  or
agreement that Landlord may reasonably so request.  Tenant  covenants and agrees
to attorn  to  Landlord  or to any  successors  to  Landlord's  interest  in the
Premises, whether by sale, foreclosure or otherwise.

Notwithstanding the foregoing,  in the event any such ground lessor or mortgagee
shall  elect  to make  the lien of this  Lease  prior to the lien of its  ground
lease,  mortgage or doed of trust,  then,  upon such party giving Tenant written
notice to such  effect,  this  Lease  shall be deemed to be prior in lien to the
lien of such ground  lease,  mortgage or deed of trust,  whether  dated prior or
subsequent thereto.

 . Mortgagee  Protection.  Tenant agrees to give any Mortgagees and/or Trust Deed
Holders,  by  registered  mail,  a copy of any  Notice of  Default  served  upon
Landlord,  provided  that  prior to such  notice  Tenant has been  notified,  in
writing (by way of Notice of Assignment  of' Rents and Leases,  or otherwise) of
the address of such Mortgagees and/or Trust Deed Holders.  Tenant further agrees
that if Landlord shall have failed to cure such default within the time provided
for in this Lease,  then the Mortgagees  and/or Trust Deed Holders shall have an
additional  ten (10)  business days within which to cure such default or if such
default cannot be cured within that time,  then such  additional  time as may be
necessary if within such ten (10) business days, any such Mortgagee and/or Trust
Deed Flolder has commenced and is diligently  pursuing the remedies necessary to
cure such default  (including  but not limited to  commencement  of  foreclosure
proceedings,  if necessary to effect such cure), in which event this Lease shall
not be terminated  while such remedies are being so diligently  pursued.  Tenant
agrees that in the event of the sale of the property,  by foreclosure or deed in
lieu  thereof,  the  purchaser  at such sale shall only be  responsible  for the
return of any security  deposits paid by Tenant to Landlord in  connection  with
this Lease to the extent that such  purchaser  actually  receives  such security
deposit and acknowledges receipt thereof in writing.

 .  Contribution.  Landlord shall contribute an amount equal to the lesser of (1)
$290,480.00  or (ii) the actual cost of  alterations  of the Premises by Tenant.
Such alterations  shall be in accordance with Article 9 of this Lease.  Landlord
shall  reimburse  Tenant for the cost of such  alterations  upon receipt of paid
invoices and lien waivers from Tenant.

 .  Hold-Over.  If Tenant shall not  immediately  surrender  the Premises the day
after the end of the term hereby  created,  then Tenant shall, by virtue of (his
agreement,  become, at Landlord's option, either (a) a tenant at sufferance,  or
(b) a tenant  from  month-to-month.  In either  of such  events,  rent  shall be
payable at a monthly or daily rate, as the case may be, of 150% the Minimum Rent
and Additional  Rental payable by Tenant  immediately prior to the expiration or
termination  of the term,  with said  tenancy to commence on the first day after
the end of the term above  demised;  and said tenancy shall be subject to all of
the  conditions  and  covenants  of this  Lease  insofar as such  covenants  and
conditions  are  applicable  thereto.  Nothing  contained in this Lease shall be
construed  as a consent  by  Landlord  to the  occupancy  or  possession  of the
Premises  after the  expiration of the term of this Lease.  If Landlord fails to
make an  election  under  clause  (a) or (b)  within  ten (10)  days  after  the
expiration or termination of the term, the hold-over  tenancy shall be deemed to
be a tenancy from month-to-month.  If Tenant holds over a month-to-month tenant,
each party  hereto  shall give to the other at least  thirty (30) days'  written
notice to quit the Premises  (any right to a Ionger  notice  period being hereby
expressly  waived),  except in the event of non-payment of rent in advance or of
the other Additional Rents provided for herein when due, or of the breach of any
other  covenant by the said Tenant,  in which event Tenant shall not be entitled
to any  notice to quit,  the  usual  thirty  (30)  days'  notice  to quit  being
expressly waived;  provided,  however,  that in the event Tenant shall hold over
after  expiration of the term hereby  created,  and if Landlord  shall desire to
regain  possession  of said  Premises  promptly  at the  expiration  of the term
aforesaid,  then at any time prior to the date  Landlord  makes (or is deemed to
have made) its election  under  clause (b) of this  Article 29,  Landlord at its
option,  may re-enter and take  possession  of the Premises  forthwith,  without
process,  or by any legal  action or  process in force in the state in which the
Premises is located; provided,  however, that if Landlord have accepted rent for
any period  beyond the  expiration of the term and Tenant is not then in default
under any of the provisions of this Lease,  Landlord  shall  promptly  refund to
Tenant an amount equal to any excess rental received by Landlord with respect to
any period alter  Landlord  exercises  its right to re-enter the premises  under
this Article 29.

 . Estoppel Certificates.  Tenant agrees, at any time and from time to time, upon
not less than five (5) calendar  days' prior written  notice from  Landlord,  to
execute,  acknowledge  and deliver to Landlord  or to such  person(s)  as may be
designated by Landlord,  a statement in writing (i) certifying that Tenant is in
possession  of the  Premises,  has  unconditionally  accepted  the  same  and is
currently paying the rents reserved  hereunder,  (ii) certifying that this Lease
is unmodified and in full force and effect (or if there have been modifications,
that  the  Lease is in fall  force  and  effect  as  modified  and  stating  the
modifications),  (iii)  stating  the dates to which  the rent and  other  charge
hereunder have heen paid by Tenant, and (iv) stating whether or not, to the best
of  Tenant's  knowledge,  Landlord  is in  default  in  the  performance  of any
covenant, agreement or condition contained in this Lease, and, if so, specifying
each such  default in  detail.  If Tenant  fails to execute  and return any such
agreement to Landlord within such ten (10) day period,  then, in addition to any
other remedies  available  with respect to such default of Tenant,  Landlord may
elect to treat the information in the estoppel  certificate prepared by Landlord
as true and correct and such information shall be binding on Tenant as if Tenant
had signed such certificate. Any such statement, delivered (or deemed delivered)
pursuant  hereto  may be  relied  upon  by  any  owner,  prospective  purchaser,
mortgagee or  prospective  mortgagee of the Building or of  Landlord's  interest
therein.

 . Quiet  Enjoyment.  Landlord  warrants that it has the right to make this Lease
for the terrn  aforesaid and that it will put Tenant into complete and exclusive
possession of the Premises.  Landlord covenants that if Tenant pays the rent and
all other charges provided for herein,  performs all of its obligations provided
for hereunder and observes all of the other provisions  hereof,  Tenant shall at
all times during the term hereof  peaceably and quietly have, hold and enjoy the
Premises,  without any  interruption or disturbance  frorn  Landlord,  or anyone
claiming through or under Landlord, subject to the terms hereof.

 . Delay. In the event Landlord for any reason is unable to deliver possession of
the  Premises  to Tenant  within  thirty (30) days after the date of this Lease,
Tenant may, at its Option, upon written notice, terminate this Lease and, except
for the return of any security deposit or prepaid rent, the parties hereto shall
have no  further  obligation  or  liability  to each  othor.  In the event  that
Landlord  does not so  terminate  this Lease,  at such time as Landlord  tenders
possession of the Premises to Tenant in writing,  Tenant shall commence  payment
of rent pursuant to paragraph 3 hereof,  and the expiration  date of the term of
this Lease shall be extended for a period equal to the period of such delay.  In
the event of any such delay,  Landlord and Tenant shall  execute a  Commencement
and Estoppel  Agreement as provided in Article 2,  specifying  the date on which
possession of the Premises was tendered by Landlord.

 .  Intentionally Deleted.

 . Financial  Statements.  Tenant,  upon Lease  execution,  and  thereafter  upon
written  request by Landlord,  will provide  Landlord with a copy of its current
financial  statements,  consisting of a balance  sheet,  an earnings  statement,
statement  of changes in  financial  position,  statement of changes in Tenant's
equity,  and related  footnotes,  prepared in accordance with gencrally accepted
accounting  principles.  Such financial statements must be either certified by a
CPA or sworn to as to their  accuracy by Tenant's  most senior  official and its
chief financial officer.  The financial statements provided must be as of a date
not more than 12 months  prior to the date of request.  Landlord  shall  rertain
such  statements in confidence,  but may provide copies to lenders and potential
lenders. If Tenant is publiclytraded, Landlord will acceptTenant's 10-K and IO-Q
reports to the S.E.C.
in lieu of the above.

 . Modifications Due to Financing.  If, in connection with obtaining temporary or
permanent  financing  for the  Building  or the land upon which the  Building is
located, any such lender shall request reasonable modifications of this Lease as
a condition to stich financing,  Tenant agrees that Tenant will not unreasonably
withhold,  delay or defer the execution of an agreement (of modification of this
Lease,  provided such modifications do not increase the financial obligations of
Tenant hereunder or materially  adversely  affect the leasehold  interest hereby
created or Tenant's reasonable use and enjoyment of the Premises.

 . Attorneys' Fees. The non-prevailing party shall reimburse the prevailing party
upon  demand for any costs or  expenses,  including  reasonable  attorney  fees,
incurred in connection  with the enforcement of obligations  hereunder.  Any and
all costs or expenses  incurred by Landlord  pursuant to the  provisions  hereof
shall be considered as Additional Rent hereunder.  Tenant  acknowledges  that it
has engaged  counsel in connection  with the  negotiation of this Lease, or that
Tenant has freely decided to enter into this Lease without engaging the services
of counsel.

 . Notices. All notices reqidred or desired to be given hereunder by either party
to the other shall be sent, postage prepaid,  by certified or registered mail or
by national overnight  delivery service (with receipt  therefor).  All rents and
other monetary obligations arising hereunder,  and all notices to the respective
parties shall be addressed and sent as follows:

         If to Landlord:                          Rent Checks Payable to:

         B. F. Saul Real Estate Investment Trust  Travelers Insurance Co.
         c/o Franklin Property Company            RE: 501998
         8401 Connecticut Avenue                  P.O. Box 64205
         Chevy Chase, Maryland 20815              Baltimore, Maryland 21264-4205
         Attn: Philip D. Caraci,
         Senior Vice President and Secretary

         If Tenant:

         Real Estate Department (w/copy to General Counsel)
         e.spire Communications, Inc.
         133 National Business Parkway, Suite 200
         Annapolis Junction, MD 20701

 . Remedies Cumulative; No Waiver. All rights and remedies given herein and/or by
law or in equity to either party are separate,  distinct and cumulative,  and no
one of them, whether exercised or not, shall be deemed to be in exclusion of any
of the others.  No failure to exercise any power given  hereunder,  or to insist
upon strict compliance with obligations hereunder,  and no custom or practice of
the parties at variance  with the terms hereof shall  constitute a waiver of the
right to demand exact compliance with the terms hereof. Unless and to the extent
otherwise expressly provided to the contrary in this Lease, time shall be of the
essence with respect to all of the obligations of the parties under this Lease.

 . Modification.  This writing is intended by the parties as the final expression
of their  agreement  and as a  complete  and  exclusive  statement  of the terms
thereof, all negotiations,  discussions and representations  between the parties
having been incorporated herein. No course of prior dealings between the parties
or their  affiliates  shall be relevant or admissible to supplement,  explain or
vary any of the terms of this Lease. Acceptance of, or acquiescence in, a course
of performance rendered under this or any prior agreement between the parties or
their affiliates shall not be relevant or admissible to determine the meaning of
any of the terms of this Lease. No representations, understandings or agreements
have been made or relied  upon in the  making of this  Lease  other  than  those
specifically  set forth  heroin.  This lease can only be  modified  by a writing
signed by all of the parties hereto or their duly authorized agents.

 . Waiver of Jury Trial. Landlord and Tenant each hereby waive all right to trial
by jury in any claim, action, proceeding or counterclaim by either party against
the other on my matters  arising out of or in any way connected with this Lease,
the  relationship of Landlord and Tenant and/or Tenant's use of occupancy of the
Premises.

 .  Headings. The captions and headings contained herein are for convenience and 
reference only.

 .  Applicable Law. This Lease shall be construed under the laws of the 
Commonwealth of Virginia.

 . Rent Tax.  Tenant shall pay any rental,  sales,  use,  business and/or similar
taxes levied or imposed by the Commonwealth of Virginia,  the County of Fairfax,
or other  governmental  authority,  whether imposed or Tenant or Landlord,  such
payments  to be in addition to all other  payments  required  under the terms of
this Lease.

 .  Gender;  Assigns  and  Successors.  Feminine  or  neuter  pronouns  shall  be
substituted  for those of the masculine  form, and the plural may be substituted
for the singular number,  in any place or places herein in which the context may
require such substitution or substitutions.  The term "Landlord" as used in this
Lease,  means only the owner for the time being,  of the Landlord's  interest in
this  Lease.  This Lease  shall be binding  upon and inure to the benefit or the
parties hereto and their  respective  successors and permitted  assigns,  except
that only the original  Landlord  named  herein shall be liable for  obligations
accruing  before the beginning of the term hereof,  and  thereafter the original
Landlord named herein and each successive  owner of the Premises shall be liable
only for  obligations  accruing  during  the period of its  ownership.  Whenever
Landlord  conveys its interest in the Building,  Landlord shall be automatically
released  from the  further  performance  of  covenants  on the part of Landlord
herein contained, and from any and all further liability, obligations, costs and
expenses, demands, causes of action, claims or judgments arising from or growing
out of, or connected  with this Lease after the effective  date of said release.
The  effective  date of said release  shall be the date the assignee of Landlord
executes an  assumption  of such an  assignment  whereby the assignee  expressly
agrees to assume all of Landlord's  obligations,  duties,  responsibilities  and
liabilities with respect to this lease.

 .  Severability.  If any  term,  covenant  or  condition  of this  Lease  or the
application  thereof to any person or  circumstance  shall to any extent be held
invalid or unenforceable, the remainder of this Lease or the application of such
term,  covenant or condition to persons or circumstances  other than those as to
which it is held  invalid or  unenforceable,  shall not be affected  thereby and
each term,  covenant and  condition of this Lease shall be valid and enforced to
the fullest extent permitted by law.

 .  Interpretation.  Whenever  in this  Lease any  printed  portion,  or any part
thereof,  has been stricken out,  whether or not any  replacement  provision has
been  added,  this  Lease  shall be read and  construed  as if the  material  so
stricken out were never included herein,  and no implication shall be drawn from
the text of the material so stricken out which would be  inconsistent in any way
with the  construction  or  interpretation  which would be  appropriate  if such
material had never been contained herein. The Exhibits referred to in this Lease
and attached  hereto are a substantive  part of this Lease and are  incorporated
herein by reference.  In any legal proceeding  respecting this Lease, this Lease
will be construed  with equal weight for the rights of both  parties,  the terms
hereof  having  been  determined  by  free  and  fair   negotiation,   with  due
consideration  for the rights and  requirements  of both  parties.  Both parties
agree that they have had equal  input into the wording  and  phraseology  of the
provisions of this Lease, and that, therefore, no provision will be construed as
drafted by one party or the other,  without respect to whose draft of this Lease
the wording or phraseology  arises.  If any of the typewritten  portions of this
Lease conflict with any of the printed  provisions of this Lease, the provisions
set forth in the typewritten portions shall control; provided,  however, that to
the extent the printed portions of this Lease may be read in a manner which will
not  conflict  with  the  provisions  of the  typewritten  portions,  then  such
interpretation  shall  be  deemed  to  be  the  correct  interpretation  of  the
provisions of this Lease.

 . Landlord's  Liability.  Any agreement,  obligation or liability made,  entered
into or  incurred  by or on behalf of B. F. Saul Real  Estate  Investment  Trust
binds only its trust property and no  shareholder,  trustee,  officer,  agent or
employee of the Trust assumes or shall be held to any liability therefor. Tenant
agrees that Landlord shall have no personal liability with respect to any of the
provisions of this Lease and Tenant shall look solely to the estate and property
of Landlord in the land and buildings comprising the Building including, without
limitation,  the  collection  of any  judgment or the  enforcement  of any other
judicial  process  requiring  the payment or  expenditure  of money by Landlord,
subject,  however,  to he prior  rights of any holder of any mortgage or deed of
trust  covering  all or part of the  Building,  and no other  assets of Landlord
shall  be  subject  to  levy,  execution  or  other  judicial  process  for  the
satisfaction  of  Tenant's  claim and, in the event  Tenant  obtains a judgement
against  Landlord,  the judgment  docket shall be so noted.  This Section  shall
inure to the benefit of Landlord's  successors and assigns and their  respective
principals.

 .  Survival of Obligations. Tenant's liabilities existing as of the expiration 
or earlier termination of the Lease Term shall survive such expiration or 
earlier termination.

 . Entity Tenants.  If Tenan is a corporation;  partnership or limited  liability
company,  the persons  executing this Lease on behalf of Tenant hereby  covenant
and warrant that:  Tenant is duly constituted as such entity and is qualified to
do business in the state where the Premises are located;  all Tenant's franchise
and corporate taxes have been paid to date; all future forms,  reports, fees and
other  documents  necessary  for Tenant to comply with  applicable  laws will be
filed by Tenant when due; and such persons are duly  authorized  by the board of
directors, partnership agreement or other applicable authority of such entity to
execute and deliver this Lease and  certificate of good  standing,  dated within
sixty (60) days prior to the Lease  Date,  issued by the  jurisdiction  in which
Tenant  is  organized,   and  one  or  more  of  the  following  confirming  the
authorization  and due execution of this Lease by Tenant:  (1) a certificate  of
Tenant's Secretary if Tenant is a corporation;  or (ii) a consent of the general
partners if Tenant is a partnership or (iii) a certified copy of the Articles of
Organization,  operating  agreement or other evidence  satisfactory  to Landlord
evidencing the authority of the members of a limited liability company executing
this Lease on behalf' thereof. Notwithstanding the foregoing, Landlord agrees to
accept the written  opinion of Tenant's  in-house  counsel  with  respect to the
matters addressed in this Article.

 . The Building is a "No Smoking" building. No smoking is permitted in any tenant
premises or any public or common area within the Building. Landlord reserves the
right to designate  areas adjacent to the Building where smoking is permitted or
prohibited.  Persons smoking in areas adjacent to the Building shall deposit all
ashes and other trash in appropriate  ashtrays or trash  receptacles,  and shall
not leave any litter in such areas.

 . No Option,  The submission of this Lease for examination does not constitute a
reservation of or option for the Premises, and this Lease becomes effective only
upon  execution and delivery  thereof by Landlord.  Neither party shall have any
legal obligation to the other in the event that the lease contemplated herein is
not consummated for any reason.  Discussions  between the parties respecting the
proposed lease described herein,  shall not serve as a basis for a claim against
either party or any officer, director or agent or either party.

 . Special  Stipulations.  The terms,  covenants and  conditions set forth in any
Articles  of  this  Lease  numbered   higher  than  this  Article  52  ("Special
Stipulations")  are intended to  supplement  and, in certain  events,  modify or
vary, the other provisions set forth in the foregoing  provisions of this Lease.
If any of the Special Stipulations conflict with any of the foregoing provisions
of this  Lease,  the  provisions  set forth in the  Special  Stipulations  shall
control;  provided,  however,  that to the extent the preceding portions of this
Lease may be read in a manner which will not conflict  with the provision of the
Special Stipulations, then such interpretation shall be deemed to be the correct
interpretation of the provisions of this Lease and the Special Stipulations.

 .  Option Term.

         () Tenant shall have the option to renew the term of this Lease for one
(1)  additional  period(s) of five (5) years (the "Option  Term")  following the
expiration  of the initial  lease term provided that this lease is in full force
and  effect,  the Tenant  shall be in  possession  and  occupying  the  Premises
(subject  to  paragraph  20.h),  and Tenant  shall not be in default  beyond the
expiration  or any  applicable  notice  and cure  period in the  performance  or
observance of any of the terms,  conditions,  provisions and/or covenants of the
Lease.  All such rights of a renewal  shall be exercised by delivery to Landlord
of  written  notice of  Tenant's  intention  to renew the term at least nine (9)
months but not more than twelve (12) months prior to the  expiration of the then
applicable  term of the  lease.  The  Option  Term  shall be of the same  terms,
covenants and  conditions its the original lease except Base Rent for the Option
Term shall be the then  Prevailing  Market Rent of  comparable  space within the
McLean, Virginia, market area.

         () Within fifteen (15) business days after receipt (if Tenant's  notice
exercising  its option to extend the term of this Lease,  Landlord  shall notify
Tenant of  Landlord's  estimate of Prevailing  Market Rent. If Tenant  disagrees
with  Landlord's  estimate of  Prevailing  Market Rent,  Tenant may rescind such
renewal notice thereby  terminating its right of renewal provided by this lease,
or Tenant shall notify Landlord that it has elected to submit the  determination
of  Prevailing  Market Rent to  Arbitration,  in which event the  provisions  of
subparagraph  (b)(ii)(a)  of this  Article  55 shall  govern  the  selection  of
arbitrators and the  establishment of the Prevailing Market Rent payable for the
year of the then applicable Option Term; provided,  however, that if Tenant does
not elect to either rescind its renewal notice or to submit the determination of
Prevailing Market Rent to Arbitration during such fifteen (15) day period,  then
the Landlord's  estimate of Prevailing  Market Rent shall be deemed to be agreed
to by Tenant,  and shall be the Base Rent  payable by Tenant to Landlord  during
the first year of the then applicable Option Term.

         ()(i)  Definition:  As used herein,  the term 'Prevailing  Market Rent'
means the most probable rent (as determined  pursuant to the appraisal procedure
hereinafter set forth) at which the Premises would be leased in a comparable and
open market,  under all conditions  requisite to a fair lease,  the Landlord and
Tenant  each  acting  prudently,  knowledgeable,  and  assuming  the rent is not
affected by undue stimulus.  Implicit in this definition is the  consummation of
the lease of such space beginning on the  commencement  date of the lease of the
Premises under conditions whereby:

         A. Landlord and Tenant are typically motivated (i.e.,  neither party is
compelled  to enter into a lease and both  parties  are  willing to enter into a
lease).
         B. Both parties are well informed or well  advised,  and each acting in
what it considers its own best interest.

         C. A reasonable time is allowed for exposure in the open market.

         D. The  Prevailing  Market Rent shall be computed as an amount equal to
the then  prevailing  market  rental  rate of the  Premises,  as if vacant  with
Building standard  improvements,  and taking into account the annual adjustments
of Base Rent,  Tenant's  obligation  to pay  Tenant's  Pro-Rata  Share of Annual
Operating Costs and all existing market factors.

         E. All of the terms,  covenants  and  conditions  of the Lease  (except
terms respecting the amount of Base Rent) remain in effect throughout the term.

         (ii) In the event of a dispute as to determination of Prevailing Market
Rent referred to in this paragraph, such dispute shall be resolved in accordance
with the following:

         (a) If  Landlord  and Tenant fail to agree upon the  Prevailing  Market
Rent as referred to in this  paragraph,  within the time  periods  provided  for
herein,  then  Landlord  and Tenant each shall give notice to the other  setting
both the name  and  address  of a  licensed  real  estate  broker  or  appraiser
(hereinafter  `appraiser') who shall be a M.A.I.  Real Estate  professional with
substantial  experience in commercial real estate appraisal  designated by it to
make the determinations  hereafter required.  Each appraiser shall be instructed
to calculate  the  Prevailing  Market Rent as provided in each of the  foregoing
sections  which is the  subject of the  dispute  and is in  accordance  with the
criteria  referenced  therein. If either party shall fail to give notice of such
designations  within ten (10) days after  failing to agree  between  themselves,
then the appraisal  made by the  appraiser so designated  shall be the Appraisal
Prevailing  Market  Rent.  If two  appraisers  have  been  designated,  such two
appraisers   shall  consult  with  each  other  and,  within  thirty  (30)  days
thereafter,  issue their  determinations of Appraisal  Prevailing Market Rent in
writing,  and give notice  thereof to each other and to Landlord and Tenant.  If
such two  appraisers  shall  concur as to the  determination  of the  Prevailing
Market Rent and submit their  decision in writing to Landlord  and Tenant,  such
concurrence  shall be final and binding  upon  Landlord  and Tenant.  If the two
determinations  of  Prevailing  Market  Rent shall be within five  percent  (5%)
(measured from the higher  appraisal) of each other, the Prevailing  Market Rent
shall be deemed to be the  average of the two  appraisers'  determinations.  If'
such two appraisers'  determinations shall not so concur or coincide,  then such
two appraisers shall immediately (1) designate it third appraiser,  (ii) prepare
detailed  written  appraisals,  and (iii)  submit  copies of such  appraisal  to
Landlord,  Tenant and such third arbitrator. If the two appraisers shall fail to
agree upon the designation of such third appraiser  within eight (8) days of the
date on which the last  determination was rendered,  then either party may apply
to  the  American  Arbitration  Association  or  any  successor  thereto  having
jurisdiction,  for the designation of such appraiser.  All arbitrators  shall be
licensed real estate  appraisers or brokers who shall have had at least ten (10)
years  continuous  experience  in the business of  appraising  or managing  real
estate or acting as real estate agents or brokers in the McLean,  Virginia area.
The third  appraiser  shall conduct such hearings and  investigations  as he may
deem  appropriate  and  shall,  within  twenty  (20)  (lays  after  the  date of
designation  of the  third  appraiser,  choose  the  determination  of  the  two
appraisers  originally  selected  by the  parties  which is the  nearest  to the
determination  such third  appraiser  would have made acting alone anti applying
the  standards  set forth  therefor in this Lease,  and that choice by the third
appraiser  shall be binding upon  Landlord and Tenant.  Each party shall pay its
own counsel fees and expenses,  if any, in connection with any arbitration under
this Article, including the expenses and fees of any appraiser selected by it in
accordance  with the provisions of this  paragraph,  and the parties shall share
equally  all other  expenses  and fees of any such  arbitration,  including  the
expenses of the third appraiser.  The determination  rendered in accordance with
the  provisions  of this  paragraph  shall be final and  binding  in fixing  the
Prevailing Market Rent.

         However,  in no event  shall the Base Rent for the first  Lease Year of
the  Option  Term be less than the then Base Rent for the last Lease Year of the
initial Lease Term as escalated by three percent (3%).

 . Satellite Dish. Tenant may install one (1) satellite dish antenna of three (3)
feet or less in  diameter  and related  wiring and  facilities  (the  "Satellite
Dish") on the roof of the  Property in an area  approved by  Landlord,  upon the
following terms and conditions:

         () The  Satellite  Dish shall be installed at the sole cost and expense
of Tenant.  The exact  location of the Satellite Dish and all  construction  and
improvements related thereto are subject to Landlord's approval.

         () Tenant  agrees  to paint  the  Satellite  Dish a color  approved  by
Landlord  and to screen the  Satellite  Dish so that it is not visible  from the
common areas of the Building or adjoining public streets.

         () Tenant shall repair promptly,  at its own expense, any damage to the
Property, the Building or the roof caused by the use, maintenance, installation,
or removal of the  Satellite  Dish or by the  negligence  of Tenant or  Tenant's
employees,  agents,  contractors or subcontractors.  The Satellite Dish shall be
removed from the roof of the Property,  and the roof and adjacent areas shall be
surrendered  to Landlord at the  expiration  or sooner  termination  of the term
hereof, in as at least as good condition as existed on the Lease Date, excepting
only depreciation  caused by ordinary wear and tear. The Satellite Dish shall be
used solely in connection with Tenant's business operation in the Premises,  and
shall not be used by any other party.

         () Landlord  reserves  the right to relocate  the  Satellite  Dish,  at
Landlord's  expense,  at any time  during  the term of this  Lease,  to  another
location will not  unreasonably  interfere  with  satisfactory  operation of the
Satellite Dish.

         () Landlord  assumes no liability or  responsibility  for  interference
with the Satellite Dish caused by the  construction  of additional  buildings on
the Property.  Tenant agrees to assume all costs for relocation of the Satellite
Dish  required  if  such  relocation  is as a  result  of  the  construction  of
additional buildings on the Property.

         () The  Satellite  Dish  and  areas  of the  roof  used  by  Tenant  in
connection  therewith  shall be deemed to be a part of the Premises for purposes
of Articles 8, 9, 10, 13, 18, and 19 of this Lease and Tenant shall  include the
Satellite  Dish within the  coverage of all  insurance  policies  required to be
maintained by Tenant under this Lease.

         () Tenant shall pay to Landlord, as Additional Rent, and subject to the
Rent  Adjustment set forth in Article 55 of this Lease, an amount equal to Three
Thousand and 00/100  Dollars  ($3,000.00)  per annum,  payable in equal  monthly
installments of Two Hundred Fifty and 00/100 Dollars ($250.00) each.

 . Year 2000.  Landlord  believes that the computer hardware and software for the
portions of the Building and its systems  which are  operated or  maintained  by
Landlord will operate after January 1, 2000. The foregoing  information is based
upon a  republication,  as defined in the Year 2000  Information  and  Readiness
Disclosure  Act,  Public  Law  105-271  (the "Year 2000  Act"),  of  information
received  from  other  parties,  such as  manufacturers,  suppliers  or  service
vendors, which may or may not be intended to be Year 2000 Statements (as defined
in the  Year  2000  Act) by  such  parties.  Landlord  expressly  disclaims  any
liability for the failure of services  provided by any utility  company or other
private,  quasi-governmental  or governmental entities in providing any services
to the Building.

 .  Telecommunications  Access. If any tenant of the Building requests in writing
that   Landlord   permit   e.spire   Communications,   Inc.  or  its   permitted
successors/assigns,  to provide such tenant  telecommunications  access services
through optic fiber wiring  (hereinafter  referenced to as "Fiber Access") then,
Landlord  shall not  unreasonably  withhold  condition or delay its approval for
Tenant to install,  operate,  maintain, repair and replace fiber optic cable and
associated equipment (the "Facilities") within the Building (also referred to as
the  "Licensed  Premises")  to  provide  its public  utility  telecommunications
services  on a  non-exclusive  basis to or for the  benefit  of  tenants  of the
Building. In connection herewith:

         (i) Landlord  shall provide  Tenant  reasonable  access to vertical and
horizontal shafts to enable Tenant to provide its telecommunications services to
tenants of the Building.

         (ii) Following  notice to and approval of all plans and  specifications
by Landlord,  Tenant shall have right of access to the Building and the right to
construct,  where  necessary and at its expense,  building  entrance and conduct
facilities  associated  with  providing its  telecommunications  services in the
Building.

         (iii) Nothing contained herein shall be construed as granting to tenant
any property or ownership  rights in the Building or to create a partnership  or
joint venture between Landlord or Tenant.

         (iv) Tenant shall defend, indemnify and save Landlord harmless from and
against all claims, liabilities, suits, fines, penalties, damages, losses, fees,
costs and expenses, including attorney fees, which may be imposed upon, incurred
by, or served against Landlord by reason of:

                  ()  any work or thing done by or on behalf of the Tenant, or 
any of its agents, contractors, subcontractors, servants, employees or invitees,
in or about the Landlord's Building or any parts thereof;

                  () any use, occupation, condition, or operation by the Tenant,
or any of its agents, contractors, subcontractors, servants, employees, Tenants,
or invitees,  in or about the Premises or the Building or any part  thereof,  or
any  passageway or space adjacent  thereto,  or elsewhere in the Premises or the
Building;

                  ()  any act or omission on the part of the Tenant, or any of 
its agents, contractors, subcontractors, servants, employees, Tenants,
or invitees;

                  () any occurrence,  accident,  injury  (including  death),  or
damage,  directly  or  indirectly  caused by the  Tenant  or any of its  agents,
contractors,  subcontractors,  servants,  employees, Tenants, or invitees to any
person  or  property  carried  in, or about the  Licensed  Premises  or any part
thereof, or in or about the Premises or the Building;

                  ()  any lien arising as a result of any of Tenant's actions 
or omissions with respect to its activities on or with respect to the Licensed 
Premises or the Facilities; and
                  ()  failure of Tenant to vacate the Licensed Premises or to 
remove the Facilities as required
under this Lease.

The Facilities  shall be deemed to be a part of the Premises for all purposes of
the Lease including, without limitation, Articles 7, 8, 9, 13, 18 and 19.

         All  local,  state  or  federal  permits  necessary  for the use of the
Facilities shall be obtained by the Tenant at Tenant's sole cost and expense and
prior to the use herein contemplated. Tenant shall have its public liability and
other  insurance  policies  endorsed to include the  Facilities as a part of the
Premises.

         IN WITNESS  WHEREOF,  the parties hereto have executed this Lease under
seal on the day and year first above written.

WITNESS/ATTEST:                            TENANT: e.spire Communications, Inc.



___________________________                 BY:_________________________________
                                                     PRINTED NAME:______________
                                                     TITLE:_____________________
                                                     TAX IDENTIFICATION
                                                     OR SOCIAL SECURITY NUMBER__

ATTEST:                                     LANDLORD:

                                            B. F. SAUL ESTATE INVESTMENT TRUST

___________________________                 BY:_________________________________
Kim Brandon, Assistant Secretary


<PAGE>


                                    EXHIBIT B

                                 WORK AGREEMENT


                              INTENTIONALLY DELETED



<PAGE>


                                    EXHIBIT C

                              RULES AND REGULATIONS

         . No  advertisement,  or other notice,  shall be inscribed,  painted or
affixed on any part of the  outside or inside of the  Building,  except upon the
doors,  and of such  order,  size  and  style,  and at such  places  as shall be
designated by Landlord in writing.  Initial  Building  Standard Suite entry door
signs and  directory  listings  will be  supplied  for  tenants by  Landlord  at
Tenant's cost.

         . The  sidewalks,  entry  passages,  corridors,  halls,  elevators  and
stairways  shall not be obstructed  by tenants,  or used by them for any purpose
other than for ingress and egress.  The floors,  and  skylights and windows that
reflect or admit light into any place in said Building,  shall not be covered or
obstructed by tenant. The water closets and other water apparatus,  shall not be
used for any other  purpose  than those for which they were  constructed  and no
sweepings, rubbish, or other obstructing substances shall be thrown therein. Any
damage  resulting to them,  or to  associated  systems,  from  misuse,  shall be
repaired by tenants  who,  or whose  employees,  clerks,  agents,  invitees,  or
servants shall cause it.

         . No tenant shall do or permit to be done in said Premises, or bring or
keep  anything  therein,  which shall in any way obstruct or interfere  with the
rights of other  tenants  or in any way  injure or annoy  them.  Tenants,  their
clerks and servants,  shall  maintain  order in the Building,  shall not make or
permit any  improper  noise in the  Building or  interfere in any way with other
tenants or those having business with them.  Nothing shall be thrown by tenants,
their clerks or servants,  out of the windows or doors,  or down the passages or
skylights  of the  Building.  No rooms  shall be occupied or used as sleeping or
lodging  apartments at any time. No part of the Building shall be used or in any
way  appropriated  for  gambling,   immoral  or  other  unlawful  practices.  No
intoxicating liquor or liquors shall be sold in said Building without Landlord's
prior  written  consent.  At no time shall any firearms or other  weapons of any
kind be kept at the Premises.

         . Tenant  shall not  employ  any  person  other  than the  janitors  of
Landlord  (who will be provided  with passkeys into the offices) for the purpose
of cleaning or taking charge of said Premises.  It is understood and agreed that
the  Landlord  shall not be  responsible  to any tenant for any loss of property
from  rented  premises,  however  occurring,  or  from  any  damage  done to the
furniture or other effects of any tenant by the janitor or any of its employees.

         . No animals, birds, bicycles or other vehicles shall be allowed in the
office, halls, corridors, or elsewhere in the Building.

         . All  tenants and  occupants  shall  observe  strict care not to leave
their windows or doors open when it rains or snows, or while air conditioning or
heating  systems are in operation,  and, for any fault or carelessness in any of
these respects,  shall make good any injury  sustained by other tenants,  and to
Landlord  for  damage  to  paint,  plastering  or other  parts of the  Building,
resulting  from such default or  carelessness.  No painting  shall be done,  nor
shall any  alterations  be made,  to any part of the  Building  by putting up or
changing  any  partitions,  doors or windows,  nor shall  there be any  nailing,
except for decorating,  boring or screwing into the woodwork or plastering,  nor
shall any connection be made to the electric wires or electric fixtures, without
the prior  consent in writing on each  occasion of  Landlord  or its Agent.  All
glass,  locks,  and  trimmings  in or upon the doors and windows of the Building
shall be kept whole and, when any part hereof shall be broken, the same shall be
immediately replaced or repaired and put in order under the direction and to the
satisfaction  of  Landlord,  or its  Agent,  and shall be left whole and in good
repair. Tenant shall not injure,  overload or deface the Building,  the woodwork
or the  walls of the  premises,  nor  carry on upon the  Premises  any  noisome,
noxious, noisy, or offensive business.

         . Seventy-five (75) keys will be provided upon initial  occupancy.  The
charge for  additional  keys shall be Five Dollars  ($5.00)  each. No additional
locks or latches  shall be put upon any door without  prior  written  consent of
Landlord.  Tenants, at termination of their lease of the premises,  shall return
to Landlord all keys to doors in the Building.

         . Landlord in all cases  retains the power to prescribe  the weight and
position of iron safes or other heavy articles.  Tenants must make  arrangements
with the manager of the  Building  when the elevator is required for the purpose
of the carrying of any kind of freight.

         . The tenant shall not (without the Landlord's  prior written  consent)
install or operate any electric beating device, steam engine, boiler,  machinery
or stove upon the Premises,  or carry on any mechanical  business therein, or do
any  cooking  therein,  except  microwave,  or use or allow to be used  upon the
Premises,  oil,  burning  fluids,,  camphene,  gasoline or kerosene for heating,
warming or lighting. No article deemed extra hazardous on account of fire and no
explosives  shall be brought into said Premises.  No offensive  gases or liquids
will be permitted.

         . If tenants  desire  blinds or windows  covering  of any kind over the
windows,  they must be of such shape, color and material as may be prescribed by
Landlord,  and shall be erected with Landlord's prior consent and at the expense
of said tenants. No awnings shall be placed on said Building.

         .  Landlord reserves all vending rights. Request for such service will 
be made to Landlord. Tenant has rights to its own vending machines for its 
break room.

         .  Twenty-five  (75)  security  cards  will be  required  by Tenant and
famished  initially  by Landlord at no charge to enter the  building  during non
business  hours.  There  will be a  charge  of  $10.00  for each  security  card
replaced.  These  cards  remain  the  property  of and must be  returned  to the
Landlord upon expiration of the Lease, or upon Landlord's  request.  If any card
is not  returned,  or is  lost or  damaged  by  Tenant,  then  there  will be an
additional charge of $10.00 per card at Landlord's discretion.

         . Except for the storage of trash or rubbish in dumpsters or containers
provided by Landlord, Tenant shall not permit storage of any kind outside of the
Premises.

         . Canvassing, soliciting and peddling in the Building is prohibited and
each tenant  shall  cooperate  to prevent the same.  Tenant  shall be allowed to
offer its services to other  tenants in the building  provided  such offering is
handled in a professional manner.

         . The  elevators  in the  Building are not to be used by the tenants or
their agents,  for moving  furniture into the Premises,  incident to the initial
occupancy,  or moving furniture or freight out, incident to vacating without the
prior written consent of Landlord and, except during the hours from 6:00 p.m. to
8:00  a.m.,  or on  Saturdays  after the hour of 1:00 p.m.  unless  approved  in
advance in writing by the manager of the Building.

         . The  Landlord  reserves  the  right  to make  such  other  rules  and
regulations as in its judgment may, from time to time, be needed for the salary,
care and  cleanliness of the Premises,  and for the  preservation  of good order
therein.

         .  Violation  of these  rules,  or any  amendments  hereof or additions
hereto,  shall be sufficient  cause for a default of this Lease at the option of
Landlord.

              . The smoking and/or holding and/or carrying of any lit tobacco or
 tobacco-like  product shall be prohibited in, on or around all public areas in,
 around or about the building except in designated smoking areas.

<PAGE>


                                    EXHIBIT D
                              INTENTIONALLY DELETED

<PAGE>


                                    EXHIBIT E
               LIST OF TENANT'S SHAREHOLDERS, PARTNERS, OR MEMBERS
           OF A LIMITED LIABILITY COMPANY AND PERCENTAGE OF OWNERSHIP

<PAGE>


                                    EXHIBIT F

                            COMMENCEMENT AND ESTOPPEL

         THIS COMMENCEMENT AND ESTOPPEL AGREEMENT is made and entered into 
this __ day of _____, 19__, by and
between  ___________ ("Tenant") and B. F. SAUL REAL ESTATE INVESTMENT TRUST 
("Landlord").

         WHEREAS,  Landlord and Tenant have heretofore entered into that certain
Lease   Agreement   dated   ________   (the   "Lease"),    for   certain   space
at___________________________.

         WHEREAS,  paragraph  3 of the Lease  provides  for the  execution  of a
commencement  agreement  specifying  the  commencement  date of the  term of the
Lease;

         NOW,  THEREFORE,  in consideration of the premises,  and for other good
and  valuable  consideration,  the  receipt and  sufficiency  of which is hereby
acknowledged, each party hereby warrants and represents to the other as follows:

         1.       That Tenant is in full and complete possession of the Dernised
                  Premises,   such  possession  having  been  delivered  by  the
                  Landlord and having been accepted by the undersigned.

         2.       That  the  Landlord's  improvements,  if any,  and  the  space
                  required to be  furnished  by the terms of the Lease have been
                  completed  in all  respects  and are  open  for the use of the
                  Tenant, its customers, employees and invitees.

         3.       That  all  duties  of an  inducement  nature  required  of the
                  Landlord in said Lease have been fulfilled.

         4.       That said Lease is in full force and effect;  that there is no
                  existing  default  on the part of the  Landlord  in the  terms
                  thereof,  and that said Lease has not been amended,  modified,
                  supplemented or superseded.

         5.       That no rents have been  prepaid  except as  provided  by said
                  Lease; that Tenant does not now have or hold any claim against
                  Landlord  which  might be set off or credited  against  future
                  accruing rent.

         6.       That Tenant has received no notice of a prior sale,  transfer,
                  assignment,  hypothecation  or pledge of the said  Lease or of
                  the rents secured therein, except to Landlord.

         7.       That the Rent  Commencement Date for the Lease is the ____ day
                  of _______, 19__ and the Lease shall expire at midnight on the
                  ______ day of ________, 19__.

         8.       Any agreement,  obligation, or liability made, entered into or
                  incurred by or on behalf of B. F. SAUL REAL ESTATE  INVESTMENT
                  TRUST  binds  only its  Trust  property,  and no  shareholder,
                  trustee,  officer,  or agent of the Trust  assumes or shall be
                  held to any liability therefor.

         IN WITNESS WHEREOF, the parties hereto do hereby execute this Agreement
under seal on the day and year first above written.

ATTEST:                                     TENANT:

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

______________________                      By:______________________(SEAL)
Secretary                                            Printed Name:______________
                                                     Its:_______________________


ATTEST:                                     LANDLORD:
                                          B. F. SAUL REAL ESTATE INVESTMENT
                                              TRUST


______________________                      By:____________________________
                                                     Printed Name:_____________
                                            Its:____________________________

<PAGE>


                                    EXHIBIT A

                                DEMISED PREMISES




EXHIBIT 10-2                                  

                               OFFICE LEASE

                  THIS LEASE,  made this 5th day of April ,1999,  by and between
Dulles North Office Park II Corporation  (hereinafter  "Landlord");  and e.spire
Communications, Inc. a Delaware Corporation (hereinafter "Tenant").

WITNESSETH:

 . Premises.  For and in consideration  of the rent hereinafter  reserved and the
mutual covenants  hereinafter  contained,  Landlord does hereby lease and demise
unto  Tenant,  and Tenant does hereby  hire,  lease and accept,  from  Landlord,
approximately  25,460 gross rentable  square feet as measured in accordance with
BOMA (Building Owner and Management Association) standards, of space (the "Gross
Area")  located at 22685  Holiday Park Drive,  Sterling,  Virginia  20166,  (the
"Building"), all upon the terms and conditions hereafter set forth. That portion
of the Gross  Area  which  Tenant  shall be  entitled  to occupy is  hereinafter
referred to as the "Premises" or "Demised  Premises",  and is outlined in red on
the floor plan attached  hereto as Exhibit A and by this  reference  made a part
hereof.  It is  specifically  understood  that for purposes of  calculating  any
payments or pro-rations hereunder,  the number of gross rentable square feet set
forth above shall control.

 . Term.  The term of this Lease  shall  commence  on the date hereof (the "Lease
Date")  and  shall end one  hundred  and  twenty  (120)  months  after the "Rent
Commencement Date", as hereinafter  defined.  The "Rent Commencement Date" shall
be the first to occur of (i) the date Tenant actually commences occupancy of the
Premises,  or (ii) one  hundred  five  (105) days after  Landlord  delivers  the
Premises to Tenant with the work described in Exhibit C completed.  In the event
the Rent  Commencement  Date is a date  other  than the first day of a  calendar
month,  the term of the Lease shall run for the number of months set forth above
from the first day of the calendar month following the Rent  Commencement  Date.
The  parties  agree that they shall  execute an  agreement  specifying  the Rent
Commencement  Date and the date of  termination  of this  Lease  and such  other
matters as Landlord  may require  (the  "Commencement  and  Estoppel  Agreement"
attached hereto as Exhibit D). Tenant agrees, to execute and deliver to Landlord
said  agreement  within  fifteen (15)  calendar  days' after  receipt of written
notice from Landlord.

 .        Rent.

         ()  Commencing  with the Rent  Commencement  Date,  Tenant shall pay as
annual rent for the Premises the sum of Three Hundred Forty-three Thousand Seven
Hundred Ten and 00/100 Dollars ($343,710.00) per annum, payable in equal monthly
installments of Twenty-eight  Thousand Six Hundred  Forty-two and 50/100 Dollars
($28,642.50) each (the "Base Rent"). All such monthly installments of rent shall
be payable to Landlord at the address  specified in Article 33 of this Lease, in
advance,  without  previous notice or demand  therefor,  and without  deduction,
setoff or recoupment,  with the first monthly  installment to be due and payable
no later than the Rent Commencement Date and each subsequent monthly installment
to be due and  payable on the first day of each and every  month  following  the
Rent  Commencement Date during the term hereof. If the Rent Commencement Date is
a date other than the first day of a month,  rent for the period commencing with
and  including the Rent  Commencement  Date until the first day of the following
month  shall be  pro-rated  at the rate of  one-thirtieth  (l/30th) of the fixed
monthly rental per day.
                  () Tenant  shall pay Base Rent in the amount of Three  Hundred
Forty-three  Thousand  Seven Hundred Ten and 00/100  Dollars  ($343,710.00)  per
annum,  payable in equal  monthly  installments  of  Twenty-eight  Thousand  Six
Hundred Forty-two and 50/100 Dollars ($28,642.50) each for the period commencing
on the Rent  Commencement  Date and  ending on the last day of the  first  Lease
Year, inclusive;

                  () Tenant  shall pay Base Rent in the amount of Three  Hundred
Fifty-four  Thousand  Twenty-one  and 36/100  Dollars  ($354,021.36)  per annum,
payable in equal monthly  installments of Twenty-nine  Thousand Five Hundred One
and 78/100 Dollars  ($29,501.78) each for the period commencing on the first day
of the second  Lease Year and ending on the last day of the second  Lease  Year,
inclusive;

                  () Tenant  shall pay Base Rent in the amount of Three  Hundred
Sixty-four  Thousand Six Hundred Forty-one and 96/100 Dollars  ($364,641.96) per
annum,  payable in equal monthly  installments  of Thirty Thousand Three Hundred
Eighty-six and 83/100 Dollars ($30,386.83) each for the period commencing on the
first day of the third  Lease Year and ending on the last day of the third Lease
Year, inclusive;

                  () Tenant  shall pay Base Rent in the amount of Three  Hundred
Seventy-five  Thousand Five Hundred Eighty-one and 16/100 Dollars  ($375,581.16)
per annum,  payable in equal monthly  installments  of  Thirty-one  Thousand Two
Hundred  Ninety-eight  and  43/100  Dollars  ($31,298.43)  each  for the  period
commencing  on the first day of the fourth Lease Year and ending on the last day
of the fourth Lease Year, inclusive;

                  () Tenant  shall pay Base Rent in the amount of Three  Hundred
Eighty-six Thousand Eight Hundred  Forty-eight and 56/100 Dollars  ($386,848.56)
per annum,  payable in equal monthly  installments  of  Thirty-two  Thousand Two
Hundred  Thirty-seven  and  38/100  Dollars  ($32,237.38)  each  for the  period
commencing  on the first day of the fifth  Lease Year and ending on the last day
of the fifth Lease Year, inclusive;

                  () Tenant  shall pay Base Rent in the  amount of Four  Hundred
Thirty-six Thousand Six Hundred Forty-four and 00/100 Dollars  ($436,644.00) per
annum,  payable in equal  monthly  installments  of  Thirty-six  Thousand  Three
Hundred  Eighty-seven  and  00/100  Dollars  ($36,387.00)  each  for the  period
commencing  on the first day of the sixth  Lease Year and ending on the last day
of the sixth Lease Year, inclusive;

                  () Tenant  shall pay Base Rent in the  amount of Four  Hundred
Forty-Nine Thousand Seven Hundred  Forty-three and 32/100 Dollars  ($449,743.32)
per annum, payable in equal monthly  installments of Thirty-seven  Thousand Four
Hundred  Seventy-eight  and  61/100  Dollars  ($37,478.61)  each for the  period
commencing on the first day of the seventh Lease Year and ending on the last day
of the seventh Lease Year, inclusive;

                  () Tenant  shall pay Base Rent in the  amount of Four  Hundred
Sixty-three  Thousand Two Hundred  Thirty-five and 64/100 Dollars  ($463,235.64)
per annum,  payable in equal monthly  installments of Thirty-eight  Thousand Six
Hundred Two and 97/100 Dollars  ($38,602.97)  each for the period  commencing on
the first day of the eighth  Lease Year and ending on the last day of the eighth
Lease Year, inclusive;

                  () Tenant  shall pay Base Rent in the  amount of Four  Hundred
Seventy-seven  Thousand One Hundred Thirty-two and 72/100 Dollars  ($477,132.72)
per annum,  payable in equal monthly  installments of Thirty-nine Thousand Seven
Hundred Sixty-one and 06/100 Dollars ($39,761.06) each for the period commencing
on the first day of the ninth Lease Year and ending on the last day of the ninth
Lease Year, inclusive;

                  () Tenant  shall pay Base Rent in the  amount of Four  Hundred
Ninety-one Thousand Four Hundred Forty-six and 68/100 Dollars  ($491,446.68) per
annum,  payable in equal  monthly  installments  of Forty  Thousand Nine Hundred
Fifty-three and 89/100 Dollars  ($40,953.89)  each for the period  commencing on
the first day of the tenth  Lease Year and ending on the last day of the term of
this Lease.

         () () Landlord  hereby  acknowledges  receipt of  Thirty-five  Thousand
Sixty Hundred Sixty- five and 22/100 Dollars ($35,665.22) which shall constitute
prepayment  of the first full  month's  Base Rent,  Real Estate Taxes and Annual
Operating charge as set forth below.

                  ()  Landlord  hereby  acknowledges  receipt  of the  letter of
Credit  described  in Article 53 to be held as security for the  performance  by
Tenant of Tenant's  covenants and  obligations  under this Lease, it being expel
understood that the deposit shall not be considered an advance payment of rental
or a  measure  of  Landlord's  damage in case of  default  by  Tenant.  Upon the
occurrence  of any event of  default  by Tenant or breach by Tenant of  Tenant's
covenants under this Lease,  Landlord may, from time to time,  without prejudice
to any other remedy,  use the security  deposit to the extent  necessary to make
good any arrears of rent and/or any damage,  injury, expense or liability caused
to  Landlord  by the event of default or breach of  covenant.  In the event that
Tenant  shall fully and  faithfully  comply with all the terms,  conditions  and
covenants  of this  Lease,  any part of the  security  not used or  retained  by
Landlord  shall be returned to Tenant after the  expiration  date of the term of
this  Lease and after  delivery  of  exclusive  possession  of the  Premises  to
Landlord;  provided,  however,  that Landlord may retain all or a portion of the
security  for a period of not more than one  hundred  eighty  (180)  days  until
Landlord makes the final annual  adjustments of Annual  Operating Costs and Real
Estate Taxes and  ascertains  Tenant's share of such amounts which accrued prior
to the expiration of the term.

         () For all  purposes  of this  Lease,  the term  "Lease  Year" shall be
defined to mean a period of twelve (12) full  calendar  months.  The first Lease
Year shall  commence on the Rent  Commencement  Date (or on the first day of the
first calendar month following the Rent  Commencement Date if said date is other
than the first day of a calendar  month),  and each succeeding  Lease Year shall
commence on the anniversary date of the beginning of the first Lease Year.

         () The  amounts  set forth in this Lease for  payment of Minimum  Rent,
Annual Operating Costs and Real Estate Taxes (see Article 5) are predicated upon
the Premises  being the size  recited in Article 1.  Promptly  upon  delivery of
possession  of the  Premises  by  Landlord  to Tenant,  Landlord  will cause its
architect  to measure and certify to Tenant the square  footage of floor area of
the Premises,  and if said measurement indicates that the Premises are larger or
smaller than the size recited in this Lease,  the parties  hereto shall promptly
execute a supplemental instrument adjusting, as applicable,  the amounts payable
by Tenant for Minimum  Rent,  Annual  Operating  Costs and Real Estate  Taxes to
conform to such measurement.  If Tenant shall have made any payments to Landlord
prior to the determination of such exact measurement,  a prompt adjustment shall
be made in said payments to reflect the accurate figures.

 .        Rent Escalation.  (INTENTIONALLY DELETED)

 .        Annual Operating Costs.

         ()       Tenant  agrees to pay to  Landlord,  as  additional  rent,  
its  Pro-Rata  Share (as  hereinafter defined) of Annual Operating Costs 
(as hereinafter deemed).

         () Tenant  shall pay to Landlord on the Rent  Commencement  Date and on
the first day of each calendar month thereafter, as its estimated payment of the
Annual Operating  Costs,  the sum of $7,022.72,  calculated at the rate of $3.31
per square foot.  If the Rent  Commencement  Date is a date other than the first
day of the month,  Tenant's Pro-Rata share shall be pro-rated in the same manner
as Base Rent  under  Article 3 hereof  Within  one  hundred  eighty  (180)  days
following  each  September 30 during the term hereof,  Landlord  shall submit to
Tenant a statement (the "Annual  Statement") in reasonable  detail of the actual
Annual  Operating Costs for the twelve month period ending  September 30 of each
year ("Fiscal Year").  If such statement shows that Tenant's share of the actual
Annual  Operating Costs exceeded  Tenant's monthly  payments,  then Tenant shall
immediately pay the total amount of such  deficiency to Landlord,  or, if Tenant
has paid an amount in excess of its Pro-Rata  Share,  such overpaid amount shall
be applied to Tenant's next monthly payment or directly to Tenant if such occurs
after the  expiration  or earlier  termination  of the Lease.  Thereafter,  upon
receipt of such succeeding  Annual  Statement,  Tenant's monthly payments during
the period  covered by said  Annual  Statement  shall be  adjusted to the actual
Annual Operating Cost, and such adjustment shall be paid within thirty (30) days
of the date of said Statement.  The amount of the actual Annual  Statement shall
be used as the basis for  calculating  Tenant's  monthly  payments  for the next
succeeding t verve (12) month period.

         () All monthly  payments as may be required  hereunder shall be payable
in full on the first day of each of the calendar month.  Failure of the Landlord
to provide any Annual  Statement  within the said one hundred  eighty  (180) day
period  shall not  constitute  a waiver by  Landlord  or Tenant of its rights to
payments due  pursuant to this  Article,  and the  obligations  hereunder  shall
survive the expiration or other termination of this Lease.

         () For any  applicable  Fiscal  Year  that  begins  prior  to the  Rent
Commencement  Date or ends after the expiration  date of this Lease,  the amount
due for that Fiscal Year shall be  apportioned  on a per diem basis so that only
that portion  attributable to the portion of such Fiscal Year that occurs during
the term of this Lease, shall be payable by Tenant.

         () Tenant's share of Annual Operating Costs ("Tenant's Pro-Rata Share")
for each full or partial fiscal year selected by Landlord  during the Term shall
be computed by Landlord by multiplying the amount of Annual Operating Costs by a
fraction  obtained by dividing the total number of gross rentable square feet of
space  contained  in the  Premises by the total gross  rentable  area  contained
within the Building from time to time.  Tenant's  Pro-Rata Share is estimated to
be 32.2% of the Annual  Operating  Costs for the Building and the Property  upon
which said Building is situated (collectively called the "Property") on the date
of this Lease.

         ()  Annual  Operating  Costs as used  herein  shall  mean all  costs of
operation,  maintenance and repair of the Property, (except structural repairs),
and its  appurtenances,  and shall include the following by way of  illustration
but not  limitation:  Real Estate Taxes (as  hereinafter  defined),  the cost of
labor,  materials and services for the operation,  maintenance and repair of the
Building and its  appurtenances  (including  service  roads and parking  areas),
including but not limited to, water and sewer charges; heating,  ventilating and
air  conditioning  maintenance and repairs;  refuse and rubbish  disposal;  snow
removal; license, permits and inspection fees; maintenance and service contracts
customarily  maintained for similar buildings;  management fees; all landscaping
costs  (including  upgrades and  replacements  thereto);  parking lot  lighting;
watchman,  guards,  and any personnel  engaged in the operation,  maintenance or
repair of the Property and its  appurtenances  together  with payroll  taxes and
employee  benefits  applicable  thereto;  reserve for asphalt and roof  repairs;
Landlord's  administrative  costs equal to fifteen  percent  (15%) of the Annual
Operating Costs (excluding Real Estate Taxes);  and insurance.  Expenses related
to a specific  tenant's  premises  which are not a general  benefit to the other
tenants  of the  Building  and legal  fees  incurred  in  connection  with other
tenant's  leases or the  enforcement  thereof  shall not be  included  in Annual
Operating Costs.

         () The term "Real Estate Taxes" means all taxes, rates and assessments,
general and special,  levied or imposed with respect to the land,  buildings and
improvements   comprising   the  Property,   including  all  taxes,   rates  and
assessments,  general  and  special,  levied  or  imposed  for  schools,  public
betterment,  general or local  improvement  and  operations and taxes imposed in
connection  with any  special  taxing  district.  If the  system of real  estate
taxation  shall be  altered or varied and any new tax or levy shall be levied or
imposed on said land, buildings and improvements,  then any such new tax or levy
shall be included within the term "Real Estate Taxes".  Should any  governmental
taxing authority  acting under any regulation,  levy,  assess,  or impose a tax,
excise and/or  assessment  however  described (other than an income or franchise
tax) upon, against, on account of, or measured by, in whole or in part, the rent
expressly  reserved  hereunder,  or upon the rent  expressly  reserved under any
other leases or leasehold  interests in the Property,  as a substitute (in whole
or in  part)  or in  addition  to any  existing  real  estate  taxes on land and
buildings and  otherwise,  such tax or excise on rents shall be included  within
the  term  "Real  Estate  Taxes".  Actual  reasonable  expenses  (consisting  of
reasonable  attorneys' fees,  consulting  fees,  expert witness fees and similar
costs)  incurred by Landlord in obtaining or attempting to obtain a reduction of
any Real Estate  Taxes shall be added to and  included in the amount of any such
Real Estate Taxes. Real Estate Taxes which are being contested by Landlord shall
nevertheless  be included for purposes of the  computation  of the  liability of
Tenant  under this  Article,  provided,  however,  that in the event that Tenant
shall have paid any amount of increased  rent pursuant to this Article 5 and the
Landlord  shall  thereafter  receive a refund of any  portion of any Real Estate
Taxes on which such payment shall have been based,  Landlord shall pay to Tenant
the Pro Rata  portion  of such  refund.  Landlord  shall have no  obligation  to
contest,  object to or  litigate  the levying or  imposition  of any Real Estate
Taxes and may settle,  compromise,  consent to, waive or otherwise  determine in
its  discretion  to abandon any contest  with  respect to the amount of any Real
Estate Taxes without consent or approval of the Tenant; provided,  however, that
Tenant's  Pro-Rata  share of expenses  related to an appeal of Real Estate Taxes
which is abandoned by Landlord shall not exceed $20,000.00.

         () Notwithstanding  anything set forth in Article 5 to the contrary, if
the average  occupancy level of the Building for any calendar is less than 100%,
the  Operating  Expenses  for  such  calendar  year  shall be  increased  by the
additional Operating Expenses,  as reasonably estimated by Landlord,  that would
have been incurred by Landlord in providing the same services provided to Tenant
(and  included in  Operating  Expenses)  if the average  occupancy  level of the
Building for the  calendar  year had been 100%.  For  purposes of the  preceding
sentence, the "average occupancy of the Building" for any calendar year shall be
the arithmetic  average of the Building Rentable Area occupied by tenants on the
first day of each month during the calendar year.

         () Tenant, upon not less than ten (10) days written notice to Landlord,
shall  have  reasonable  access  during  normal  business  hours  in  Landlord's
headquarters  office to inspect the books and  records of  Landlord  relating to
Annual  Operating  Costs  and/or  to have  such  books and  records  audited  or
reviewed, at Tenant's expense, for the purpose of verifying the Annual Operating
Costs  statement.  Tenant  shall  bear all costs  relating  to such  inspection,
including, but not limited to, costs of photocopies. Any discrepancy in Tenant's
Proportionate Share shall be promptly corrected by a payment of any shortfall to
Landlord by Tenant within thirty (30) days after the applicable  audit,  or by a
credit  against the next  payment(s)  of Annual  Operating  Costs due under this
Lease.  Tenant  shall keep the  results of any audit of Annual  Operating  Costs
confidential.

 .        Additional Rent.

         () Tenant  shall (i) pay  directly  for all utility  services  directly
metered to the  Tenant,  including  all  charges  associated  with the  metering
therefor;  (ii) pay directly for all telephone charges; and (iii) be responsible
for the  prompt  and  sanitary  storage of  Tenant's  refuse and  rubbish in the
Premises.

         () Any amounts  required to be paid by Tenant hereunder and any charges
or expenses  incurred  by  Landlord on behalf of Tenant  under the terms of this
Lease shall be  considered  additional  rent payable in the same manner and upon
the same terms and conditions as the rent reserved hereunder. Any failure on the
part of Tenant to pay such  additional  rental when and as the same shall become
due shall entitle  Landlord to the remedies  available to it for  non-payment of
rent.  Tenant's failure to object to any statement,  invoice or billing rendered
by the Landlord  within a period of one hundred  twenty (120) days after receipt
thereof shall constitute  Tenant's  acquiescence with respect thereto,  and such
statement, invoice or billing shall thereafter be deemed to be correct and shall
be an account stated between Landlord and Tenant.

 .        Laws and Ordinances.

         () Tenant will, at its own cost, promptly comply with and carry out all
orders,  requirements  or  conditions  now or  hereafter  imposed upon it by the
ordinances, laws and/or regulations of the municipality,  county and/or state in
which the Premises are located,  whether  required of Landlord or otherwise,  in
the conduct of Tenant's  business,  including,  without  limitation,  all local,
state and federal laws and regulations respecting the storage,  handling and use
of any hazardous waste,  infectious waste or other hazardous  materials,  except
that  Landlord  shall  comply  with any orders  affecting  structural  walls and
columns  unless due to  Tenant's  particular  business  or use of the  Premises.
Tenant will indemnify and save Landlord harmless from all penalties, claims, and
demands resulting from Tenant's failure or negligence in this respect.

         () Landlord shall comply with all laws and  regulations  with regard to
the Common Area of the Building and  structural  portions of the Building  which
Landlord is required to repair pursuant to the terms of this Lease. In addition,
Landlord shall cause the Common  Facilities to conform to all  applicable  legal
and  insurance  requirements,  including  the Americans  with  Disabilities  Act
("ADA"),  and the Board of Insurance  Underwriters.  Landlord will indemnify and
save Tenant  harmless  from all  penalties,  claims and demands  resulting  from
Landlord's failure or negligence in this respect.

 .        Furniture; Fixtures; Electrical Equipment.

         ()  Tenant  shall  not  place a load  upon the  floor  of the  Premises
exceeding  two hundred  (200)  pounds per square foot without  Landlord's  prior
written consent. Business machines, mechanical equipment and materials belonging
to  Tenant  which  cause  vibration,  noise,  cold,  heat or  fumes  that may be
transmitted  to the  Building  or to any other  leased  space  therein to such a
degree as to be objectionable to Landlord or to any other tenant in the Building
shall be placed,  maintained,  isolated,  stored  and/or vented by Tenant at its
sole expense so as to absorb and prevent such  vibration,  noise,  cold, heat or
fumes.  Tenant  shall  not keep  within  or about the  Premises  any  dangerous,
flammable, toxic or explosive material beyond standard office materials,  except
in strict compliance with laws and in amounts actually  necessary for conduct of
Tenant's business.  Tenant shall indemnify Landlord and hold it harmless against
any and all  damage,  injury,  or claims  resulting  from the moving of Tenant's
equipment,  furnishings and/or materials into or out of the Premises or from the
storage or operation of the same.  Any and all damage or injury to the Premises,
the Building, or the Property caused by such moving,  storage or operation shall
be repaired by Tenant at Tenant's sole cost.

         () Tenant shall not install any equipment  whatsoever which will or may
necessitate any changes, replacements or additions to the water system, plumbing
system,  heating system, air conditioning system or the electrical system of the
Premises  without the prior written consent of Landlord,  such consent not to be
unreasonably  withheld,  conditioned or delayed.  Tenant shall, at its sole cost
and expense,  pay all charges for electricity used by the Tenant during the term
of this Lease,  including  that used for interior  lighting and the operation of
the heating and air conditioning system in the Premises.

 .        Alterations.

         ()  Tenant  shall  make  no  alterations  or  changes,   structural  or
otherwise,  except for  non-structural  alterations which are cosmetic in nature
(i.e., consisting of painting and carpeting) to any part of the Premises, either
exterior or interior, without Landlord's written consent (such consent not to be
unreasonably  delayed,  withheld in the case of Landlord's  improvements made in
accordance  with Article 26 below).  In the event of any such approved  changes,
Tenant  shall have all work done at its own  expense.  Request for such  consent
shall be  accompanied  by plans stating in detail  precisely what is to be done.
Tenant  shall  comply  with  the  building  codes,  regulations  and laws now or
hereafter to be made or enforced in the municipality, county and/or state, which
pertain  to  such  work.  Any  additions,   improvements,   alterations   and/or
installations  made by Tenant (except only office furniture,  business and trade
fixtures or any  equipment  including  but not limited  to,  Network  Operations
Equipment (as defined in Paragraph 12) and related  communication  and equipment
and wiring)  shall  become and remain a part of the  Building  and be and remain
Landlord's property upon the termination of Tenant's occupancy of said Premises,
unless  Landlord  shall advise Tenant at the time of  Landlord's  consent to any
such  addition or  alteration,  that such addition or  alteration,  etc. will be
required  to be removed by Tenant upon the  expiration  or  termination  of this
Lease,  Tenant shall not be required to remove any such  alteration or addition.
Tenant shall save Landlord harmless from and against all expenses, liens, claims
or damages to either  property  or person  which may or might arise by reason of
the   making   of  any  such   additions,   improvements,   alterations   and/or
installations.  Landlord reserves the right to change,  increase or reduce, from
time to time,  the number,  composition,  dimensions  or location of any parking
areas,  signs,  the Building name,  service areas,  walkways,  roadways or other
common  areas or make  alterations  or additions  to the  Building,  in its sole
discretion provided,  however, that if such changes (i) materially and adversely
affect  Tenant's use of the Premises,  or the parking or common  areas,  or (ii)
materially  reduce the  Building's  level of common area  finishes and services,
Landlord  shall not make such changes  without  Tenant's prior  approval,  which
shall not be unreasonably withheld,  conditioned or delayed. Landlord's approval
of  Tenant's  plans  and  specifications  under  this  Article  9 or  any  other
provisions  of this Lease is solely  for the  purpose  of  ascertaining  whether
Tenant's  proposed  alterations  will have an adverse  impact on the  structural
components or Common  Facilities of the Building and to insure the aesthetic and
architectural harmony of the Tenant's proposed alterations with the remainder of
the  Building.  No  approval  of  plans by  Landlord  shall  be  deemed  to be a
representation  or warranty by Landlord that such plans or the work provided for
therein  will  comply  with  applicable  codes,  laws  or  regulations  or be in
conformance with any insurance or other  requirements  which affect the Premises
or the Building, and Tenant shall have the sole responsibility of complying with
all such requirements notwithstanding Landlord's approval of Tenant's plans.

         () NOTICE IS HEREBY  GIVEN  THAT  LANDLORD  SHALL NOT BE LIABLE FOR ANY
LABOR OR MATERIALS  FURNISHED OR TO BE FURNISHED TO TENANT UPON CREDIT, AND THAT
NO MECHANICS'  OR OTHER LIEN FOR ANY SUCH LABOR OR MATERIALS  SHALL ATTACH TO OR
AFFECT  THE  ESTATE  OR  INTEREST  OF  LANDLORD  IN AND TO THE  PREMISES  OR THE
BUILDING. WHENEVER AND AS OFTEN AS ANY LIEN ARISING OUT OF OR IN CONNECTION WITH
ANY WORK PERFORMED,  MATERIALS FURNISHED OR OBLIGATIONS INCURRED BY OR ON BEHALF
OF TENANT SHALL HAVE BEEN FILED AGAINST THE PREMISES OR THE BUILDING,  OR IF ANY
CONDITIONAL  BILL OF SALE SHALL HAVE BEEN FILED FOR OR AFFECTING ANY  MATERIALS,
MACHINERY OR FIXTURES USED IN THE CONSTRUCTION,  REPAIR OR OPERATION THEREOF, OR
ANNEXED  THERETO BY TENANT,  TENANT SHALL FORTHWITH TAKE SUCH ACTION BY BONDING,
DEPOSIT OR PAYMENT AS WILL  REMOVE OR SATISFY  THE LIEN OR  CONDITIONAL  BILL OF
SALE  WITHIN  THIRTY  (30)  DAYS  OF  LANDLORD'S   WRITTEN   REQUEST   THEREFOR,
NOTWITHSTANDING  THE FOREGOING,  NOTHING  CONTAINED  HEREIN SHALL LIMIT TENANT'S
RIGHT TO CONTEST SUCH LIEN.

 .        Damage.

         () If the  Premises  are  damaged  by fire or other  cause  covered  by
Landlord's  policy of fire  insurance  with extended  coverage or other property
damage insurance carried by Landlord, the damage shall be repaired by and at the
expense of Landlord and the rent until such  repairs  shall have been made shall
abate  pro-rata  according  to the part of the  Premises  which is  unusable  by
Tenant.  However,  if such damage was caused by the  negligence  of Tenant,  its
employees, agents, contractors, visitors or licensees, then all rentals shall be
payable by Tenant during such period. Due allowance shall be made for reasonable
delay which may arise by reason of adjustment of fire insurance by Landlord, and
for  personnel  delay on account of "labor  troubles"  or any other cause beyond
Landlord's control.  If, however,  the Premises are rendered wholly untenantable
by fire or other cause and Landlord shall decide not to rebuild, the same, or if
the entire  Building be so damaged that Landlord  shall decide to demolish it or
not to rebuild it, then or in any of such events,  Landlord  may, at its option,
cancel and  terminate  Lease by giving Tenant notice in writing of its intention
to cancel this Lease,  whereupon the term of this Lease shall terminate upon the
thirtieth  (30th) day after such notice is given,  and Tenant  shall  vacate the
Premises  and  surrender  the  same  to  Landlord.  In  neither  of the  certain
contingencies  in this paragraph  mentioned  shall there be any liability on the
part of Landlord to Tenant covering or in respect of any period during which the
occupation of said Premises by Tenant may not be possible because of the matters
hereinabove  stated,  nor shall  Landlord  be liable for any damage  incurred by
Tenant  other than  Landlord's  obligation  to repair the  Premises as contained
herein.

         () Notwithstanding anything to the contrary contained in this Lease, if
the Premises are damaged or destroyed by fire,  accident,  the elements or other
casualty  (a  "Casualty")  to the extent that it will not be possible to rebuild
the  Premises  within  one  hundred  eighty  (180)  days  after  the date of the
Casualty,  Landlord  shall  notify  Tenant  within  thirty  (30) days after such
Casualty of  Landlord's  good faith  estimate  of the time  needed to  undertake
reconstruction of the Premises.  If (i) Tenant is not then in default under this
Lease beyond the expiration of any applicable  notice and cure period,  and (ii)
the damage was not caused by Tenant's negligence or willful  misconduct,  Tenant
shall have the right to  terminate  this Lease by giving to  Landlord  notice of
such termination within fifteen (15) days after Landlord provides notice of such
good faith  estimate.  In the event that  Landlord  or Tenant do not  exercise a
right of  termination  as  provided in this Lease,  Landlord  shall  commence to
repair the damage caused by such Casualty and, thereafter,  shall diligently and
continuously pursue completion of such repairs,  within the estimated completion
date as set forth in  Landlord's  notice.  If  Landlord  fails to  substantially
complete the repairs within the estimated completion date, Tenant shall have the
right and option, as its sole and exclusive remedy upon no less than thirty (30)
days prior notice to Landlord to terminate this Lease;  provided,  however, that
any  termination  of this  Lease by  Tenant  shall be null and void if  Landlord
substantially  completes  repairs  within  thirty  (30) days  after  receipt  of
Tenant's notice of termination.

 .  Condemnation.  If the  Premises  or any  part  thereof  shall be taken by any
governmental or  quasi-governmental  authority  pursuant to the power of eminent
domain,  or by  deed in lieu  thereof,  Tenant  agrees  to  make  no  claim  for
compensation in the proceedings, and hereby assigns to Landlord any rights which
Tenant may have to any portion of any award made as a result of such taking with
respect to the real property including, without limitation, the Building and the
Tenant's  leasehold,  and this Lease  shall  terminate  as to the portion of the
Premises taken by the condemning  authority and rental shall be adjusted to such
date,  but Tenant shall be  permitted to file a separate  claim for any personal
property of Tenant which is taken. The foregoing  notwithstanding,  Tenant shall
be entitled to claim,  prove and receive in the  condemnation  proceedings  such
awards as may be allowed for  relocation  expenses  and for  fixtures  and other
equipment  installed by it which shall not, under the terms of this Lease, be or
become the  property  of Landlord at the  termination  hereof,  but only if such
awards  shall  be made by the  condemnation  court  in  addition  to and  stated
separately  from the  award  made by it for the land  and the  Building  or part
thereof so taken.  Tenant  shall have the right to  terminate  this Lease if the
portion of the Property,  Building or Premises taken materially  interferes with
Tenant's use of the Premises. If the nature,  location or extent of any proposed
condemnation  affecting the Building is such that Landlord  elects in good faith
to demolish the Building,  then  Landlord may terminate  this Lease by giving at
least sixty (60) days' or such time as  permitted  by the  condemning  authority
written notice of termination to Tenant at any time after such  condemnation and
this Lease shall terminate on the date specified in such notice.

 . Use of Premises.  The Premises shall be used and occupied by Tenant solely for
the  following  uses:  (i)  operation,  installation,  maintenance,  repair  and
replacement of the  communications  equipment of Tenant and its customers,  (ii)
the location and operation of Network  Operations Center Equipment  (hereinafter
defined), (iii) general office use, (iv) receiving,  storing, light assembly and
selling  (other than retail)  products,  materials and  merchandise  make and/or
distributed  by  Tenant,   and  (v)  those  uses  as  permitted  in  Article  52
hereinbelow.  "Network Operations  Equipment" shall mean the following equipment
of Tenant (i)  telecommunications  switching  equipment and transport  nodes and
telecommunications  equipment  of  Tenant's  customers,  (ii)  AC and  DC  power
equipment,  sealed  batteries,  and  generators  (iii)  projection  and computer
equipment to facilitate network management and monitoring, and (iv) computer and
data processing  equipment.  The term "Network  Operations Center" shall mean an
area of the  Premises  used  for  the  location  and  operation  of the  Network
Operations  Center  Equipment.  The  Premises  shall not be used for any illegal
purpose or in violation of any valid regulation of any governmental  body, or in
any manner to (i) create  any  nuisance  or  trespass;  (ii) annoy or  embarrass
Landlord or any other tenant of the Property;  (iii) vitiate any  insurance;  or
(iv) alter the classification or increase the rate of insurance on the property.

 . Repairs by Tenant. Tenant shall be responsible for repairing,  maintaining and
cleaning the Premises and the fixtures  therein,  keeping same in good order and
condition  consistent with comparable Buildings during the term of this Lease at
its sole cost and expense,  and will, at the expiration or other  termination of
the term hereof, surrender and deliver up the same and all keys, locks and other
fixtures connected therewith (except only office furniture,  business equipment,
trade fixtures and Network Operations Equipment and related equipment, cable and
wiring, but Tenant shall repair any such damage caused by such removal) in safe,
clean,  sanitary, and non-hazardous  condition,  and otherwise in good order and
condition,  as the same were  required to be in on the date Tenant  occupied the
Premises for the conduct of Tenant's business,  ordinary wear and tear excepted.
With  respect to property  damage  only,  Landlord  will be liable for  property
damage caused by the negligence of Landlord or its agents or employees, subject,
however, to the waiver of subrogation set forth in paragraph 17.e.

 .        Repairs by Landlord.

         ()  Landlord  shall  have no duty to  Tenant  to make  any  repairs  or
improvements   to  the  interior  of  the  Premises  except  Landlord  shall  be
responsible  for  structural  repairs and any repairs  necessary  for safety and
tenantability,  and then  only if not  brought  about by any act or  neglect  of
Tenant, its agents, employees or invitees.  Landlord shall not be liable for any
damage caused to the property of Tenant, its agents,  employees or invitees, due
to the  Property or the  Building  or any part or  appurtenances  thereof  being
improperly  constructed or being or becoming out of repair,  or arising from the
leaking  of  water or  sewer,  or from  electricity,  or from  any  other  cause
whatsoever,  and  Tenant  agrees  to  look  solely  to  its  own  insurance  for
compensation  for any such damage or loss.  Tenant  agrees to endeavor to report
immediately  in writing to  Landlord  any  defective  condition  in or about the
Premises known to Tenant. Landlord shall not be liable for failure to furnish or
for  suspension  or  delay  in  furnishing   such  services  due  to  breakdown,
maintenance, or repair work, strike, riot, civil commotion,  governmental action
or  any  other  cause  beyond  the  reasonable  control  of  Landlord,   or  for
interruptions of service for reasonable  periods in connection with construction
work being performed in the Building;  notwithstanding  the foregoing,  Landlord
shall use reasonable efforts not to affect Tenant's use of  Building/Premises as
a result of work  described  above.  Interruption  of service(s)  that continues
beyond three (3)  consecutive  days as a result of Landlord's  negligence  shall
entitle Tenant to an abatement of rent.

         () If Landlord  defaults in its  obligations to maintain and repair the
Premises in accordance  with the  provisions of this Lease,  and such failure of
Landlord will have a material  adverse effect on Tenant's ability to operate its
business in the Premises,  and any such failure continues for a period in excess
of thirty (30) days after  Landlord  receives  Tenant's  written  notice of such
default,  then  Tenant  may,  at its  option and at its risk,  perform  any such
maintenance or repairs; provided,  however, that if any such default of Landlord
cannot  with due  diligence  and  commercially  reasonable  efforts  be cured by
Landlord within the thirty (30) day period after receipt of Tenant's notice, the
period for cure by Landlord  shall be extended  if,  within such thirty (30) day
period Landlord commences and thereafter diligently pursues the cure of any such
default.

         () If Tenant elects to cure a default of Landlord,  then the reasonable
costs  incurred by Tenant in curing any default of Landlord in  accordance  with
paragraph (b) above shall be reimbursed to Tenant by Landlord within thirty days
after Landlord's receipt of (i) Tenant's invoice for such costs, and (ii) copies
of  paid  invoices  for all  such  work  or  expenses  incurred,  and  (iii)  if
applicable,  lien  waivers  from  all  contractors,   subcontractors,   material
suppliers or other parties  having lien rights  involved in the  performance  of
such work.  Lien  waivers  shall not be required if Tenant  provides  proof that
contractors,  subcontractors  or other parties having lien rights have been paid
in full or, in the sole opinion of Landlord, the time period for perfecting such
liens has expired.  Tenant shall defend,  indemnify  and save Landlord  harmless
from and against any and all claims, actions, damages,  liability and expense in
connection  with loss of life,  personal injury and/or damage to or interference
with  property  or the  premises  of other  tenants  arising  from or out of any
exercise of any rights granted to Tenant under this Article 14.

         () Pursuit of any of the foregoing  remedies shall not preclude  Tenant
from pursuing any other  remedies  herein or at law or in equity  provided,  nor
shall  pursuit of any remedy by Tenant  constitute a forfeiture or waiver of any
amount due to Tenant hereunder or of any damages accruing to Tenant by reason of
Landlord's violation of any of the covenants and provisions of this Lease.

         () If Landlord  defaults in its  obligations to maintain and repair the
Building in accordance  with the  provisions of this Lease,  and such failure of
Landlord will have a material  adverse effect on Tenant's ability to operate its
business in the Premises,  and any such failure continues for a period in excess
of thirty (30) days after  Landlord  receives  Tenant's  written  notice of such
default,  then Tenant may pursue any remedy  available  at law or in equity with
respect to such default of Landlord; provided, however, that if any such default
of Landlord  cannot with due diligence and  commercially  reasonable  efforts be
cured by Landlord  within the thirty (30) day period  after  receipt of Tenant's
notice, the period for cure by Landlord shall be extended if, within such thirty
(30) day period Landlord commences and thereafter diligently pursues the cure of
any such default.

 .        Roof Rights.  Except as otherwise  provided in this Lease,  Landlord 
shall have the exclusive right to use all or any portion of the roof of the 
Building for any purposes.

 . Landlord's  Remedies  Upon  Default.  In the event Tenant shall default in the
payment,  when  due,  of any  installment  of rent or  other  charges  or  money
obligation to be paid by Tenant hereunder (all of which monetary  obligations of
Tenant shall bear  interest at the highest rate  allowable by law, not to exceed
eighteen  percent (18%) per annum,  from the date due until paid in full) within
five (5) business days after the date any such amount is due; provided, however,
that Tenant  shall not be in default  with respect to the first two (2) monetary
payments  received  after  such five (5) day period in any Lease Year until five
(5) days after Tenant's  receipt of written  notice of such late payment;  or if
Tenant shall default in performing any of the covenants,  terms or provisions of
this Lease  (other  than the  payment,  when due,  of any of  Tenant's  monetary
obligations  hereunder)  or any of the Rules and  Regulations  now or  hereafter
established  by Landlord to govern the  operation  of the  building and fails to
cure such default  within 30 calendar  days after  written  notice  thereof from
Landlord;  provided, however, that, solely with respect to non-monetary defaults
which  cannot with due  diligence  and best  efforts be cured within such thirty
(30) day period if,  within  such thirty (30) day period  Tenant  commences  and
thereafter diligently pursues the cure of any such non-monetary default,  Tenant
shall be granted an additional reasonable period of time to effect a cure; or if
Tenant shall abandon the Premises and discontinue timely rental payments;  or if
Tenant is  adjudicated a bankrupt;  or if a permanent  receiver is appointed for
Tenant's  property;  or if, whether  voluntarily or involuntarily,  Tenant takes
advantage  of any debtor  relief  proceedings  under any  present or future law,
whereby  the rent or any part  thereof,  is or is  proposed  to be,  reduced  or
payment  thereof  deferred,  or if Tenant makes an assignment for the benefit of
creditors or if Tenant's  property or effects  should be levied upon or attached
under process against Tenant, not satisfied or dissolved within 10 calendar days
after  written  notice from Landlord to Tenant to obtain  satisfaction  thereof;
then, and in any of said events,  Landlord,  at its option may pursue any one or
more of the following remedies without any notice or demand whatsoever:

         .  Landlord,  at its  option,  may at once,  or at any time  thereafter
terminate this Lease by written notice to Tenant, whereupon this Lease shall end
concurrently with the receipt by Tenant of such notice. Upon such termination by
Landlord,  Tenant will at once surrender  possession of the Premises to Landlord
and remove  all of  Tenant's  effects  therefrom,  and  Landlord  may  forthwith
re-enter the Premises and repossess himself thereof,  and remove all persons and
effects therefrom, using such force as may be necessary, without being guilty of
trespass, forcible entry, detainer or other tort.

         . Landlord may,  without  terminating  this Lease,  enter upon and take
possession  of the Premises and expel or remove  Tenant and any other person who
may be occupying  the  Premises or any part  thereof,  without  being liable for
prosecution or any claim for damages therefor,  and, if Landlord so elects, make
such  alterations  and repairs as, in Landlord's  judgment,  may be necessary to
relet the  Premises,  and relet such space or any part thereof for such rent and
for such period of time and subject to such terms and conditions as Landlord may
deem advisable and receive the rent therefor. Upon each such reletting, all rent
received by Landlord from such  reletting  shall be applied first to the payment
of any  indebtedness  other than rent due  hereunder  from  Tenant to  Landlord,
including  interest  thereon;  second,  to the payment of any loss or expense of
such  reletting,   including   brokerage  fees,   reasonable   attorneys'  fees,
advertising and promotion expenses and the cost of such alterations and repairs;
third, to the payment of rent due and unpaid  hereunder,  together with interest
thereon as herein provided;  and the residue,  if any, shall be held by Landlord
and  applied in payment  of future  rent as the same may become due and  payable
hereunder.  Tenant agrees to pay to Landlord, on demand, any deficiency that may
arise by reason of such reletting.  Notwithstanding  any such reletting  without
termination,  Landlord may at any time thereafter  elect to terminate this Lease
for such prior default.

         . In the event Landlord  terminates  this Lease in accordance  with the
provisions of this Article 16,  Landlord may, in addition to any other remedy it
may have,  recover from Tenant all damages and  expenses  Landlord may suffer or
incur by reason of Tenant's default hereunder,  including,  without  limitation,
the cost of recovering the Premises, reasonable attorneys' fees and the worth at
the time of such  termination  of the excess,  if any, of the amount of rent and
charges  equivalent  to the rent reserved in this Lease for the remainder of the
stated  term  over the then  reasonable  rental  value of the  Premises  for the
remainder of the stated term based upon a reduction to present value calculation
at the rate of ten percent (10%), all of which sums shall become immediately due
and payable by Tenant to Landlord upon demand of Landlord.

         . Anything in this Lease to the contrary  notwithstanding,  in order to
cover the extra expense involved in handling delinquent  payments,  Tenant shall
pay a "late charge" of Two Hundred Fifty and No/100  Dollars  ($250.00) when any
installment of rent (basic or otherwise,  as may be considered additional rental
under this Lease) is paid more than seven (7)  business  days after the due date
thereof. It is hereby understood that this charge is for extra expenses incurred
by the  Landlord  in  processing  the  delinquency  and shall not be  considered
interest.

         . Pursuit of any of the foregoing  remedies shall not preclude Landlord
from pursuing any other  remedies  herein or at law or in equity  provided,  nor
shall pursuit of any remedy by Landlord constitute a forfeiture or waiver of any
rent due to Landlord  hereunder or of any damages accruing to Landlord by reason
of Tenants violation of any of the covenants and provisions of this Lease.

 .        Insurance.

         . Tenant agrees that it will indemnify and save Landlord  harmless from
any and all liabilities,  damages,  causes of action, suits, claims,  judgments,
costs  and  expenses  of any kind  (including  reasonable  attorneys'  fees) (i)
relating  to or  arising  from  or  in  connection  with  the  possession,  use,
occupation,  management,  repair,  maintenance or control of the Premises or any
portion thereof,  or (ii) arising from or in connection with any act or omission
of Tenant or Tenant's agents, employees or invitees, or (iii) resulting from any
injury to person or property or loss of life sustained in or about the Premises.
To assure such  indemnity,  Tenant shall carry and keep in full force and effect
at all times  during the term of this Lease for the  protection  of Landlord and
Tenant herein,  commercial  general liability  insurance with limits of at least
Two Million Dollars  ($2,000,000.00)  combined single limit for each occurrence,
with an approved insurance company,  and Tenant shall deliver to Landlord a copy
of said policy or a certificate  showing the same to be in full force and effect
prior to the Rent Commencement Date and at least annually thereafter.

         .  Throughout  the Lease  Term,  Tenant  shall  insure,  for their full
insurable value, the contents of the Premises,  including furnishings,  fixtures
and equipment  used or installed in the Premises and Network  Operations  Center
(as  defined in Article  55) by or on behalf of Tenant,  including  the  Network
Operations  Equipment  defined in Article 12 and the other personal  property of
Tenant in the Premises,  against loss due to fire and other casualties  included
in broad form property insurance policies, with an agreed amount endorsement and
replacement  cost coverage.  Throughout the Lease Term,  Tenant shall also carry
business  interruption  insurance,  provided however,  that irrespective of such
business  interruption,  Tenant shall be entitled to rent abatement as described
in Articles 14 (a) and 56 herein.

         . Said public liability and property damage insurance  policies and any
other insurance  policies carried by Tenant with respect to the Premises,  shall
(i) be issued by good and solvent insurance  companies  qualified to do business
in the Commonwealth of Virginia and reasonably satisfactory to Landlord; (ii) be
written as primary policy coverage and not contributing with or in excess of any
coverage  which  Landlord may carry;  (iii)  provide for at least 30 days' prior
written  notice to  Landlord of any  cancellation  or other  expiration  of such
policy or any defaults  thereunder,  Tenant's  liability  insurance policy shall
name Landlord and Landlord's  managing  agent (and, if so requested,  Landlord's
mortgagee) as additional insureds.  Neither the issuance of any insurance policy
required hereunder,  nor the minimum limits specified herein with respect to the
Tenant's  insurance  coverage,  shall be deemed to limit or  restrict in any way
Tenant's liability arising under or out of this Lease.
         . Landlord shall maintain (i) public liability  insurance on the common
areas of the Building in amounts not less than those set forth in paragraph  (a)
of this Article 17 and (ii) Property  Insurance for full replacement cost of the
Building in an amount sufficient to avoid co-insurance.

         . () To the extent permitted by law, each of Landlord and Tenant hereby
releases the other, to the extent of all property insurance carried (or required
to be carried) by each party under the terms of this Lease,  from  liability for
any loss or damage  caused by fire or other of the extended  casualties  insured
against; provided,  however, that this release shall be in force and effect only
with  respect  to loss or damage  occurring  during  such time as the  releasing
party's  insurance  policy  contain a clause or clauses which provides that: (i)
the insurance  company  waives  subrogation  or consents to a waiver of right of
recovery,  and (ii) such waiver of subrogation or consent to a waiver of a right
of recovery does not adversely  affect or prejudice said policy or the releasing
party's right of full recovery  thereunder.  Landlord's  release of Tenant under
this  subparagraph  (e) is expressly  conditioned upon Tenant's full cooperation
with  Landlord's  insurance  carrier in inspections of the Premises and Tenant's
compliance with all requirements  imposed by Landlord's  insurance  carrier with
respect to any activities in or use of the Premises which  increases the risk of
loss to the Building, Property or the Premises.

                  () If a party  advises  the other  party  that a clause of the
type  described  in  paragraph  (1)  above is (i) not  obtainable,  or (ii) only
obtainable at additional  cost, then such party shall not be obligated to obtain
a waiver;  provided,  however,  that with  respect to an  inability  to obtain a
waiver due to the imposition of additional cost, the party shall promptly notify
the other party of the amount of such additional cost and, if the party desiring
that the other  party  obtain a waiver  agrees in writing to pay the  additional
cost of obtaining the waiver,  then,  upon receipt of such  payment,  that party
shall  obtain a waiver of  subrogation  for the benefit of the other  party,  as
described in paragraph  (1) above.  To the extent that either party is permitted
to self insure as to its personal  property located in the Premises,  that party
will  nevertheless  be deemed to be insured for such  personal  property for the
purposes of this subparagraph (e).

 . Property at  Tenant's  Risk.  It is  understood  and agreed that all  personal
property in the  Premises,  of whatever  nature,  whether owned by Tenant or any
other person,  shall be and remain at Tenant's sole risk and Landlord  shall not
assume any  liability  or be liable  for any damage to or loss of such  personal
property,  arising  from the  bursting,  overflowing,  leaking of the roof or of
water or sewer pipes, or from heating or plumbing  fixtures or from the handling
of electric  wires or fixtures or from any other cause  whatsoever,  unless such
damage is  caused by  negligence  of  Landlord,  its  agents or  employees  (but
expressly subject to the waiver of subrogation set forth in paragraph 17.e.).

 .        Assignment; Subletting.

         . Neither Tenant, nor any of its permitted successors or assigns, shall
transfer,  assign,  mortgage,  encumber,  or, by operation of law or  otherwise,
pledge,  hypothecate,  or assign all or any of its  interest in this  Lease,  or
sublet  or permit  the  Premises,  or any part  thereof,  to be used by  others,
including, but not by way of limitation, concessionaires or licensees of Tenant,
without the prior written consent of Landlord,  in each instance,  which consent
Landlord  shall not  unreasonably  withhold,  condition or delay if Tenant fully
complies with the  requirements of this Article 19 and other  provisions of this
Lease.  Any such  subletting or assignment  shall be referred to as a "Transfer"
(as further defined in this Article 19,  subparagraph (b) below), and the person
to whom Tenant's interest is transferred shall be referred to as a "Transferee".

         .        For the  purposes  of this  Article 19, the term  "Transfer"  
shall also  include  the  following circumstances:

                  () if Tenant or any  guarantor of this Lease is a  corporation
(other than a corporation,  the outstanding voting stock of which is listed on a
national  securities  exchange,  as defined in the  Securities  Exchange  Act of
1934), if the shares of such  corporation  are transferred by sale,  assignment,
bequest,  inheritance,   operation  of  law  or  otherwise  (including,  without
limitation,  a  transfer  to or by a  receiver  or  trustee  in federal or state
bankruptcy, insolvency or other proceeding), so as to result in or make possible
a change in the present control of such corporation;

                  () if  Tenant  or any  guarantor  of this  Lease is a 
partnership,  any  change  in  control  or ownership of such partnership;

                  () any  transfer by sale,  assignment,  bequest,  inheritance,
operation of law or other  disposition of all or substantially all of the assets
of Tenant or any guarantor  which  results in or makes  possible a change in the
present control of the business of Tenant or any such guarantor;

                  ()  any other change in ownership of Tenant, any guarantor of 
this Lease;

                  () any  subletting  or assignment  which occurs by operation 
of law,  merger,  consolidation,  or reorganization; or

                  () any sale of all, or  substantially  all, of Tenant's assets
unless,  in connection  therewith, this Lease is assigned to the acquiring 
party, as provided in paragraph 19(h) below.

         In no event may Tenant assign this Lease, or sublease the Premises,  if
Tenant is in default under this Lease.

         . In the event that  Tenant  desires  to effect a  Transfer  hereunder,
Tenant shall give Landlord written notice (the "Transfer Notice") thereof. To be
effective,  the Transfer Notice shall be accompanied by Tenant's check,  payable
to the order of Landlord, or Landlord's Agent, in an amount equal to the greater
of (i)  $500.00  or (ii) one  percent  (1%) of the  Minimum  Rent to  compensate
Landlord  (not to  exceed  $1500.00)  for the  cost of  reviewing  the  proposed
Transfer and specify the  proposed  Transferee,  and the  proposed  terms of the
Transfer,  and contain  such  information  about the  proposed  Transferee,  its
experience,  its financial situation, its methods of operation, and provided its
business operation being consistent with those found in comparable buildings, as
a prudent  businessman  would  require in making the Transfer  decision.  Tenant
specifically  agrees to apprise Landlord of any adverse or negative  information
in its possession  concerning the proposed Transfer and the proposed Transferee.
The Transfer Notice shall also contain a certificate by Tenant (or an officer or
general  partner of Tenant if Tenant is a  corporation  or  partnership)  of all
"Transfer  Consideration"  (as defined below) or payable in connection  with the
proposed  Transfer.  Within  forty-five (45) days of the receipt of the Transfer
Notice  Landlord shall,  by written notice to Tenant,  elect:  (i) to permit the
proposed  Transfer;  (ii) to terminate this Lease with respect to the portion of
the  Premises  proposed  to be  Transferred,  but Tenant  may,  within  five (5)
business  days after  receipt of Landlord s notice of  termination,  rescind its
request for consent to a Transfer, in which event this Lease will not terminate;
(iii) to sublet with the right to further  sublet from Tenant for the balance of
the term of this Lease only so much of the Lease Premises as Tenant  proposed to
Transfer,  at the  same  rental  as  Tenant  is  obligated  to  pay to  Landlord
hereunder;  or (iv) to deny  consent to the  proposed  Transfer,  in which event
Tenant  shall  continue to occupy the Lease  Premises and comply with all of the
terms and conditions hereof.

         . If this Lease is  Transferred  under the definition of a Transfer (as
defined in Article 19,  subparagraphs  (a) and (b)), the Transferee shall assume
by written  instrument  all of  Tenant's  obligations  under this Lease and such
Transferee,  at least five (5) days prior to the effective date of the permitted
Transfer,  shall  deliver to Landlord  the  proposed  sublease,  assignment  and
assumption  agreement  or  other  instrument  evidencing  the  Transfer  and the
Transferee's  undertaking  to perform  Tenant's  obligations  under this  Lease.
Except for the Transfer as permitted in this Article 19,  subparagraph h, all of
such documents shall be subject to Landlord's  prior written  approval not to be
unreasonably  withheld,  conditioned  or delayed.  In the event of any Transfer,
including a permitted  Transfer,  Tenant shall continue to be liable  hereunder,
and shall not be released from  performance  hereunder.  In addition to the Rent
reserved  hereunder,  and except in the case of a Transfer as  specified in this
Article 19,  subparagraph  h below,  Tenant  shall pay to  Landlord  all monies,
property and other  consideration  of every kind  whatsoever  paid or payable to
Tenant in  consideration  of or related to such  Transfer  and for all  property
transferred to the Transferee,  as all or part of the  consideration  including,
without limitation, fixtures, other Leasehold Improvements, furniture, equipment
and furnishings  (collectively,  all of the foregoing monies, property and other
consideration  shall  be  referred  to as  the  "Transfer  Consideration"),  but
excluding  bona fide  consideration  paid for  transfer  of  Tenant's  property.
Following an assignment of this Lease,  Landlord shall send the named Tenant any
notice of default by the approved Transferee.

         . Any Transfer,  except as provided in  subparagraph  h below,  without
Landlord's consent,  whether as a result of any act or omission of Tenant, or by
operation of law or  otherwise,  shall not be binding upon  Landlord,  and shall
confer no rights upon any third person.  Each such  unpermitted  Transfer shall,
without notice or grace period of any kind, constitute a default by Tenant under
this Lease.  The  acceptance  by Landlord of the payment of Rent  following  any
Transfer  prohibited  by this  Article 20 shall not be deemed to be a consent by
Landlord to any such Transfer,  an acceptance of the  Transferee as a tenant,  a
release of Tenant from the performance of any covenants herein  contained,  or a
waiver by Landlord of any remedy of Landlord under this Lease,  although amounts
actually   received  shall  be  credited  by  Landlord   against  Tenant's  rent
obligations.  Consent by Landlord to any one  Transfer  shall not  constitute  a
waiver of the  requirement  for consent to any other  Transfer.  No reference in
this Lease to  assignees,  concessionaires,  subtenants  or  licensees  shall be
deemed to be a consent by Landlord to the occupancy of the Lease Premises by any
such assignee, concessionaire, subtenant or licensee.

         . If Tenant is a corporation, limited liability company or partnership,
Tenant  represents  that the ownership and power to vote its entire  outstanding
capital stock or partnership  interests  belongs to and is vested in the persons
listed on Exhibit "E". The foregoing  provisions of this paragraph  (f)shall not
apply to a publicly  held entity whose  outstanding  voting stock is listed on a
national securities exchange, as defined in the Securities Exchange Act of 1934.

         . If any sublease or assignment provides that the subtenant or assignee
is to pay any  amount in excess of the rent and  other  charges  due under  this
Lease, then whether such excess is in the form of an increased monthly or annual
rental, a lump sum payment (excluding a bona fide security deposit), payment for
the  sale,  transfer  or lease of  Tenant's  fixtures,  leasehold  improvements,
furniture and other personal  property,  but excluding  bona fide  consideration
paid for transfer of Tenant's property,  or any other form (and if the subleased
or assigned space does not constitute the entire Premises, the existence of such
excess  shall be  determined  on a pro rata  basis),  but  excluding  bona  fide
consideration  paid for  transfer  of  Tenant's  property,  Tenant  shall pay to
Landlord  any such excess as  additional  rent no later than ten (10) days after
Tenant's receipt thereof.

         . Notwithstanding  anything contained herein to the contrary (including
the obligations and procedures as specified in this Article 19 subparagraphs (c)
or (g)  herein),  Tenant may,  without the prior  written  consent of  Landlord,
assign  this Lease for the use and  occupation  of the  Premises  solely for the
purpose set forth in Article 12 to the following:

                  () Tenant's  parent or subsidiary  corporation  or to a 
corporation  under common  ownership with and controlled by the same persons 
who control Tenant, or

                  ()  any party which acquires substantially all of the assets 
of Tenant, or

                  () to a corporation into which Tenant merges or  consolidates,
provided,  however,  that in each such event described in the above 
subparagraphs (i) through (iii):

                  ()       such assignee shall assume in writing all of Tenant's
obligations hereunder; and

                  ()       Tenant  continues to remain  liable under this Lease 
for the  performance  of all of the terms  contained  herein  including but not 
limited to, the payment of Base Rent, and all Additional Rent due under
this Lease;

         The provisions (i) through (iii) of this paragraph (i) shall not permit
a Transfer  in the event that  Tenant is  acquired  by another  corporation  and
becomes a subsidiary  thereof,  (x) unless Tenant  continues to be operated as a
separately  identified company,  substantially in the same manner as before such
acquisition, or (y) if, after such acquisition, or as a result thereof, Tenant's
net worth will decline by twenty-five percent (25%) or more, unless in such case
of  reduced  net  worth,  the  parent of the party  acquiring  Tenant  agrees to
guaranty  Tenant's  obligations under this Lease. The liability of any Guarantor
of this Lease  shall not be  affected  as a result of any  assignment  permitted
under this subparagraph (i).

         No  Transfer  will be  permitted  under this  subparagraph  (i) if such
Transfer would result in:

                  (i) a Transfer of this Lease or the ownership interests in any
Transferee to an entity not affiliated with Tenant through common  ownership and
control  (except for a purchase  of  Tenant's  assets,  in  accordance  with the
provisions set forth above), or

                  (ii) a  Transfer  of  this  Lease  to an  entity  outside  the
ownership  family to which  Tenant  belongs  (except  for a purchase of Tenant's
assets,  in  accordance  with the  provisions  set  forth  above)  as a means of
defeating  the other  provisions  of this  Article 19 which  require  Landlord's
consent to a Transfer.

Liquidated Damages:

Tenant  acknowledges  that it is important to Landlord to know of the occurrence
of an  assignment  and the identity of an assignee,  and that damage to Landlord
will be  difficult  to  ascertain  if  Tenant  fails to  notify  Landlord  of an
assignment permitted under this paragraph 20 (i). Therefore,  if Tenant fails to
notify  Landlord of any such  assignment,  Tenant shall be in default under this
Lease; provided, however, that

(1) if Tenant's failure to notify is due to negligence or  inadvertence,  Tenant
shall pay to Landlord  liquidated damages equal to the lesser of (A) One Hundred
Dollars  ($100.00)  per day for  each  day  after  the  occurrence  of any  such
assignment until Landlord receives notice of the assignment or (B) Five Thousand
Dollars ($5,000.00),  or (2) if Tenant's failure to notify is intentional (which
Tenant may contest if Tenant  disputes  Landlord's  claim that such  failure was
intentional),  then  Landlord  shall be entitled to pursue any remedy  available
under this Lease or at law or in equity and/or collect  liquidated damages equal
to the amount of One Hundred  Dollars  ($100.00)  per day for each day after the
occurrence  of  any  such  assignment  until  Landlord  receives  notice  of the
assignment.

 . Signs. No sign,  advertisement or notice shall be inscribed,  painted, affixed
or displayed  on the windows or exterior  walls of the Premises or on any public
area of the Building,  except  exterior suite door and standard  building tenant
identification  signs, and then only in such places,  numbers,  sizes, color and
style as are  approved  by Landlord  and which  confirm to all  applicable  laws
and/or ordinances. Any and all permitted signs shall be installed and maintained
by Landlord at Tenant's sole  expense.  During the period of six months prior to
the  expiration of this Lease or any renewal  thereof,  Landlord  shall have the
right to display on the exterior of the Premises a sign advertising the space as
available  "For Rent",  so long as such  display(s)  does not interfere with the
appearance of Tenant's sign(s).

 . Rules and  Regulations.  Tenant  shall at all times  comply with the rules and
regulations  set forth on  Exhibit B  attached  hereto,  and with any  additions
thereto and  modifications  thereof  adopted from time to time by Landlord,  and
each such rule or  regulation  shall be deemed to be a covenant of this Lease to
be performed and observed by Tenant.

 . Parking. Landlord grants Tenant the free and non-exclusive,  unassigned, right
to use the  parking  area at a ratio of not less than 3 spaces per 1,000  square
feet leased or areas designated by the Landlord from time to time. Tenant hereby
agrees to comply with all traffic and parking rules and  regulations  imposed by
Landlord  from time to time.  Notwithstanding,  Tenant  shall  have the right to
utilize the loading  areas of the Building  for  additional  parking  subject to
Landlord's reasonable judgement and approval.

 .  Landlord  Access.  Landlord  shall have the right to enter upon the  Premises
during  business hours with  reasonable  advance notice and at Tenant's  option,
Landlord may be accompanied by a designated  representative  of Tenant except in
cases of  emergency  for  purposes of (i) showing  the  Premises to  prospective
tenants;  (ii) to post the Premises with "For Rent" or other offering  signs, as
Landlord  may  deem  appropriate;  (iii)  to  exhibit  the  same to  prospective
purchasers or mortgagees; and (iv) to inspect the Premises to see that Tenant is
complying with all its obligations hereunder, or to make required repairs.

 .        Subordination

         () This  Lease is  subject  and  subordinate  to the lien of any ground
leases and to all  mortgages,  deeds of trust or deeds to secure  debt which may
now or hereafter  affect or encumber the Building or the real  property of which
the Premises form any part, and to all renewals, modifications,  consolidations,
replacements or extensions thereof.  This Article shall be self-operative and no
further  instrument of subordination  shall be required.  In confirmation of any
such  subordination,  Tenant shall  execute  within ten (10) calendar days after
receipt,  any  certificate  that  Landlord  may  reasonably  so request.  Tenant
covenants  and agrees to attorn to Landlord or to any  successor  to  Landlord's
interest  in  the  Premises,   whether  by  sale,   foreclosure   or  otherwise.
Notwithstanding the foregoing, in the event any ground lessor,  mortgagee or the
holder of any deed of trust or deed to secure  debt shall elect to make the lien
of this Lease prior to the lien of its ground lease or mortgage, then, upon such
party giving Tenant  written notice to such effect this Lease shall be deemed to
be prior in lien to the lien of such ground  lease or  mortgage,  whether  dated
prior or subsequent thereto.

 . Mortgagee  Protection.  Tenant agrees to give any Mortgagees and/or Trust Deed
Holders,  by  Registered  Mail,  a copy of any  Notice of  Default  served  upon
Landlord,  provided  that  prior to such  notice  Tenant has been  notified,  in
writing (by way of Notice of Assignment of Rents and Leases,  or otherwise),  of
the address of such Mortgagees and/or Trust Deed Holders.  Tenant further agrees
that if Landlord shall have failed to cure such default within the time provided
for in this Lease,  then the Mortgagees  and/or Trust Deed Holders shall have an
additional  ten (10)  business days within which to cure such default or if such
default cannot be cured within that time,  then such  additional  time as may be
necessary if within such ten (10) business days, any Mortgagee and/or Trust Deed
Holder has commenced and is diligently  pursuing the remedies  necessary to cure
such  default   (including  but  not  limited  to  commencement  of  foreclosure
proceedings,  if necessary to effect such cure), in which event this Lease shall
not be terminated  while such remedies are being so diligently  pursued.  Tenant
agrees that in the event of the sale of the Property,  by foreclosure or deed in
lieu  thereof,  the  purchaser  at such sale shall only be  responsible  for the
return of any  security  deposit paid by Tenant to Landlord in  connection  with
this Lease to the extent that such  purchaser  actually  receives  such security
deposit and acknowledge receipt thereof in writing.

 .  Construction  of Tenant  Improvements  by Landlord.  Landlord shall make such
improvements  in and to the Premises as designated on Exhibit C attached  hereto
and by this  reference  made a part hereof.  Any  improvements  other than those
shown on Exhibit C shall be subject to Landlord's  prior written  approval which
shall not to be unreasonably withheld, conditioned or delayed in accordance with
Article 9 and, shall be at the Tenant's sole expense, Landlord's sole obligation
with respect to the  improvements  set forth on Exhibit C is to  construct  such
improvements  in  accordance  with the  specifications  set forth on  Exhibit C.
Landlord  does not  represent  or warrant to Tenant that the work  described  on
Exhibit C is sufficient to make the Premises  suitable for Tenant's intended use
or that such work will be sufficient to enable Tenant to obtain a certificate of
occupancy for the Premises.

 .  Contribution.  Landlord shall contribute an amount equal to the lesser of (i)
$636,500.00  or (ii) the actual cost of  alterations  of the Premises by Tenant.
Such alterations  shall be in accordance with Article 9 of this Lease.  Landlord
shall  reimburse  Tenant for the cost of such  alterations  upon receipt of paid
invoices  and lien  waivers  from  Tenant.  No lien  waivers will be required if
Tenant  provides  proof that all parties  holding  lien rights have been paid in
full or, if in the sole opinion of Landlord, the time period for perfecting such
liens has expired.

 .  Hold-Over.  If Tenant shall not  immediately  surrender  the Premises the day
after the end of the term hereby  created,  then Tenant shall, by virtue of this
agreement,  become, at Landlord's option, either (a) a tenant at sufferance,  or
(b) a tenant  from  month-to-month.  In either  of such  events,  rent  shall be
payable at a monthly or daily rate, as the case may be, of one hundred and fifty
percent (150%) the Base Rent and Additional Rental payable by Tenant immediately
prior to the  expiration  or  termination  of the  term,  with said  tenancy  to
commence  on the first day after  the end of the term  above  demised;  and said
tenancy  shall be subject to all of the  conditions  and covenants of this Lease
insofar  as such  covenants  and  conditions  are  applicable  thereto.  Nothing
contained  in this Lease  shall be  construed  as a consent by  Landlord  to the
occupancy or possession of the Premises after the expiration of the term of this
Lease.  If Landlord fails to make an election under clause (a) or (b) within ten
(10) days after the expiration or termination of the term, the hold-over tenancy
shall be deemed to be a tenancy from  month-to-month.  If Tenant holds over as a
month-to-month tenant, each party hereto shall give to the other at least thirty
(30) days'  written  notice to quit the Premises  (any right to a longer  notice
period being hereby  expressly  waived),  except in the event of  non-payment of
rent in advance or of the other  Additional  Rents provided for herein when due,
or of the breach of any other covenant by the said Tenant, in which event Tenant
shall not be entitled to any notice to quit,  the usual thirty (30) days' notice
to quit being  expressly  waived;  provided,  however,  that in the event Tenant
shall hold over after  expiration  of the term hereby  created,  and if Landlord
shall desire to regain possession of said Premises promptly at the expiration of
the term  aforesaid,  then at any time prior to the date  Landlord  makes (or is
deemed to have made) its election under clause (b) of this Article 28,  Landlord
at its option,  may re-enter  and take  possession  of the  Premises  forthwith,
without  process,  or by any legal  action or  process  in force in the state in
which the Premises is located; provided,  however, that if Landlord has accepted
rent for any period beyond the  expiration of the term and Tenant is not then in
default  under any of the  provisions  of this Lease,  Landlord  shall  promptly
refund to Tenant an amount equal to any excess rental  received by Landlord with
respect  to any  period  after  Landlord  exercises  its right to  re-enter  the
Premises under this Article 28.

 . Estoppel Certificates.  Tenant agrees, at any time and from time to time, upon
not less than ten (10)  calendar  days' prior  written  notice by  Landlord,  to
execute,  acknowledge  and deliver to Landlord  or to such  person(s)  as may be
designated  by Landlord,  a statement in writing on a form  provided by Landlord
(i) certifying that Tenant is in possession of the Premises, has unconditionally
accepted the same and is currently  paying the rents  reserved  hereunder,  (ii)
certifying  that this  Lease is  unmodified  and in full force and effect (or if
there  have been  modifications,  that the Lease is in full  force and effect as
modified and stating the  modifications),  (iii)  stating the Rent  Commencement
Date and the dates to which the rent and other charges  hereunder have been paid
by Tenant  and (iv)  stating  whether  or not to the best  knowledge  of Tenant,
Landlord  is in  default  in the  performance  of  any  covenant,  agreement  or
condition  contained in this Lease,  and, if so, specifying each such default in
detail.  If Tenant  fails to execute and return any such  agreement  to Landlord
within  such ten (10) day  period,  then,  in  addition  to any  other  remedies
available  with respect to such  default of Tenant,  Landlord may elect to treat
the  information  in the estoppel  certificate  prepared by Landlord as true and
correct and such information  shall be binding on Tenant as if Tenant had signed
such  certificate.  Any such statement  delivered or deemed  delivered  pursuant
hereto may be relied  upon by any owner,  prospective  purchaser,  mortgagee  or
prospective mortgagee of the Building or of Landlord's interest therein.

 . Quiet  Enjoyment.  Landlord  warrants that it has the right to make this Lease
for the term  aforesaid  and that it will put Tenant into complete and exclusive
possession of the Premises.  Landlord covenants that if Tenant pays the rent and
all other charges provided for herein,  performs all of its obligations provided
for hereunder and observes all of the other provisions  hereof,  Tenant shall at
all times during the term hereof  peaceably and quietly have, hold and enjoy the
Premises,  without any  interruption  or disturbance  from  Landlord,  or anyone
claiming through or under Landlord, subject to the terms hereof.

 . Delay. In the event Landlord for any reason is unable to deliver possession of
the  Premises  to Tenant  within  thirty (30) days after the date of this Lease,
Tenant may, at its option upon written  notice to Landlord  terminate this Lease
and, except for the return of any security  deposit or prepaid rent, the parties
hereto shall have no further obligation or liability to each other. In the event
that Tenant does not so terminate this Lease,  at such time as Landlord  tenders
possession of the Premises to Tenant in writing,  Tenant shall commence  payment
of rent  pursuant to Article 3 hereof,  and the  expiration  date of the term of
this Lease shall be extended for a period equal to the period of such delay.  In
the event of any such delay,  Tenant shall execute a  Commencement  and Estoppel
Agreement as provided in Article 2,  specifying the date on which  possession of
the Premises was tendered by Landlord.

 . Modifications Due to Financing.  If, in connection with obtaining temporary or
permanent  financing  for the  Building  or the land upon which the  Building is
located, any such lender shall request reasonable modifications of this Lease as
a condition to such financing,  Tenant agrees that Tenant will not  unreasonably
withhold,  delay or defer the execution of any agreement of modification of this
Lease provided such  modifications do not increase the financial  obligations of
Tenant hereunder or materially  adversely  affect the leasehold  interest hereby
created or Tenant's reasonable use and enjoyment of the Premises.

 . Attorneys Fees. The non-prevailing  party shall reimburse the prevailing party
upon demand for any costs or  expenses,  including  attorney  fees,  incurred in
connection with the enforcement of obligations  hereunder.  Any and all costs or
expenses  incurred  by  Landlord  pursuant  to the  provisions  hereof  shall be
considered as Additional Rent hereunder. Tenant acknowledges that it has engaged
counsel in connection  with the  negotiation  of this Lease,  or that Tenant has
freely  decided  to enter into this  Lease  without  engaging  the  services  of
counsel.

 . Notices.  All notices,  rent or other payments required or desired to be given
hereunder  by  either  party to the  other  shall be sent by first  class  mail,
postage prepaid,  or by a reputable  commercial  messenger service,  except that
notices of default shall be sent by certified mail,  return receipt requested or
by a receipted commercial messenger service (such as Federal Express or Airborne
Express)  for  delivery  on the next  following  business  day.  Notices  to the
respective  parties,  and any amounts  required to be paid  hereunder,  shall be
addressed and sent as follows:

If to Landlord:  Notices and Correspondence       Rent, Payments, etc.
                 c/o Franklin Property Company    c/o Franklin Property Company
                 8401 Connecticut Avenue          P.O. Box 64772
                 Chevy Chase, Maryland 20815      Baltimore, Maryland 21264-4288
                 Attn:  Legal Department
If to Tenant:          Real Estate Department (w/copy to General Counsel)
                       e.spire Communications, Inc.
                       133 National Business Parkway
                       Suite 200
                       Annapolis Junction, MD 20701

Either party may designate a substitute address, from time to time, by notice in
writing sent in accordance with the provisions of this Article 34.

 .        Applicable  Law.  This  Lease  shall be  construed  under the laws of 
the State in which the  Premises  is located.

 . No  Reservation.  The  submission  of this  Lease  for  examination  does  not
constitute a reservation  of or option for the Premises,  and this Lease becomes
effective only upon full  execution by Landlord and Tenant.  Neither party shall
have any legal obligation to the other in the event that the Lease  contemplated
herein  is not  consummated  prior  to the  execution  thereof  for any  reason.
Discussions  between the parties respecting the proposed lease described herein,
shall not  serve as a basis for a claim  against  either  party or any  officer,
director or agent of either party.

 .  Parties;  Assigns  and  Successors.   Feminine  or  neuter  pronouns  may  be
substituted  for those of the masculine  form, and the plural may be substituted
for the singular number,  in any place or places herein in which the context may
require such substitution or substitutions.  The term "Landlord" as used in this
Lease,  means only the owner for the time being of the  Landlord's  interest  in
this Lease; and, in the event of the sale,  assignment or transfer by such owner
of the Landlord's interest in this Lease, such owner shall thereupon be released
and discharged of all covenants and obligations of Landlord hereunder thereafter
accruing except for ongoing disputes between the parties and disputes that arise
after the transfer of Landlord's  ownership  interest which nonetheless  accrued
prior to such transfer. Except as provided in the preceding sentence, all of the
covenants,  agreements,  terms, conditions,  provisions and undertakings in this
Lease shall inure to the  benefit of, and shall  extend to and be binding  upon,
the parties hereto and their respective heirs, executors, legal representatives,
successors  and assigns,  to the same extent as if they were in every case named
and  expressed.  If two or more  corporations,  partnerships  or other  business
associations  (or any  combination of two or more thereof) shall sign this Lease
as Tenant, the liability of each such corporation, partnership or other business
association  to pay rent and perform all other  obligations  hereunder  shall be
deemed to be joint and several and any notice required or permitted by the terms
of this  Lease may be given by or to any one  thereof,  and shall  have the same
force and effect as if given by or to all thereof. In like manner, if the Tenant
named in this Lease shall be a partnership  or other business  association,  the
members of which are, by virtue or statute or general  law,  subject to personal
liability,  the liability of each such member shall be joint and several, but no
personal  liability shall be imputed to the  individuals  execution on behalf of
the Tenant by the mere fact of such execution.

 .  Severability.  If any term,  or  condition  of this Lease or the  application
thereof to any  person or  circumstance  shall to any extent be held  invalid or
unenforceable,  the  remainder  of this Lease or the  application  of such term,
covenant or condition to persons or  circumstances  other than those as to which
it is held or  unenforceable,  shall  not be  affected  thereby  and each  term,
covenant and  condition of this Lease shall be valid and enforced to the fullest
extent permitted by law.

 . Rent Tax. If applicable in the  jurisdiction  where the Premises are situated,
Tenant  shall pay and be  liable  for all  rental,  sales and use taxes or other
similar taxes,  if any,  levied or imposed by any City,  State,  County or other
governmental body having authority, such payments to be in addition to all other
payments  required  to be paid to  Landlord  by  Tenant  under the terms of this
Lease. Any such payments shall be paid concurrently with the payment of the rent
upon which the tax is based as set forth above.

 . Acts of God.  Neither  party shall not be required to perform any  covenant or
obligation in this Lease other than  monetary  payments due Landlord from Tenant
hereunder,  or be  liable  in  damages  to  the  other  party,  so  long  as the
performance or nonperformance  of the covenant or obligation is delayed,  caused
by or prevented by an act of God or force majeure.

 .  Landlord's  Liability.  Tenant  agrees that  Landlord  shall have no personal
liability  with respect to any of the  provisions of this Lease and Tenant shall
look solely to the estate and  property  of  Landlord in the land and  buildings
comprising the Property of which the Premises forms a part for the  satisfaction
of Tenant's  remedies,  including,  without  limitation,  the  collection of any
judgement or the enforcement of any other judicial process requiring the payment
or expenditure of money by Landlord,  subject,  however,  to the prior rights of
any holder of any Mortgage  covering all or part of the  Property,  and no other
assets of Landlord shall be subject to levy, execution or other judicial process
for the  satisfaction  of  Tenant's  claim and,  in the event  Tenant  obtains a
judgement against Landlord, the judgement docket shall be so noted. This Section
shall  inure to the  benefit of  Landlord's  successors  and  assigns  and their
respective principals.

 . Remedies Cumulative; No Waiver. All rights and remedies given herein and/or by
law or in equity to either party are separate,  distinct and cumulative,  and no
one of them,  whether  exercised  by Landlord  or not,  shall be deemed to be in
exclusion  of any of the others.  No failure to exercise  any power given either
party hereunder, or to insist upon strict compliance with obligations hereunder,
and no custom or practice of the parties at variance with the terms hereof shall
constitute  a waiver  of the  right to demand  exact  compliance  with the terms
hereof.

 . Modification.  This writing is intended by the parties as the final expression
of their  agreement  and as a  complete  and  exclusive  statement  of the terms
thereof,  all  negotiations,  considerations  and  representations  between  the
parties having been incorporated herein. No course of prior dealings between the
parties or their  affiliates  shall be relevant  or  admissible  to  supplement,
explain or vary any of the terms of this Lease.  Acceptance of, or  acquiescence
in, a course of performance  rendered under this or any prior agreement  between
the parties or their affiliates shall not be relevant or admissible to determine
the   meaning  of  any  of  the  terms  of  this  Lease.   No   representations,
understandings or agreements have been made or relied upon in the making of this
Lease other than those  specifically  set forth  herein.  This Lease can only be
modified by a written  agreement  signed by all of the  parties  hereto or their
duly authorized agents.

 . Waiver of Jury Trial. Landlord and Tenant each hereby waive all right to trial
by jury in any claim, action, proceeding or counterclaim by either party against
the other on any matters arising out of or in any way connected with this Lease,
the  relationship of Landlord and Tenant and/or Tenant's use of occupancy of the
Premises.

 . Interpretation.  Captions and headings are for convenience and reference only.
Whenever  in this  Lease any  printed  portion,  or any part  thereof,  has been
stricken out,  whether or not any  replacement  provision  has been added,  this
Lease shall be read and  construed as if the material so stricken out were never
included herein, and no implication shall be drawn from the text of the material
so stricken out which would be inconsistent in any way with the  construction or
interpretation  which  would be  appropriate  if such  material  had never  been
contained herein. The Exhibits referred to in this Lease and attached hereto are
a  substantive  part of this  Lease and are  incorporated  herein by  reference.
Unless and to the extent  otherwise  expressly  provided to the contrary in this
Lease,  time shall be of the essence with respect to all of the  obligations  of
the parties under this Lease.  In any legal  proceeding  respecting  this Lease,
this Lease will be construed  with equal weight for the rights of both  parties,
the terms hereof having been determined by free and fair  negotiation,  with due
consideration  for the rights and  requirements  of both  parties.  Both parties
agree that they have had equal  input into the wording  and  phraseology  of the
provisions of this Lease, and that, therefore, no provision will be construed as
drafted by one party or the other,  without respect to whose draft of this Lease
the wording or phraseology  arises.  If any of the typewritten  portions of this
Lease conflict with any of the printed  provisions of this Lease, the provisions
set forth in the typewritten portions shall control; provided,  however, that to
the extent the printed portions of this Lease may be read in a manner which will
not  conflict  with  the  provisions  of the  typewritten  portions,  then  such
interpretation  shall  be  deemed  to  be  the  correct  interpretation  of  the
provisions of this Lease.

 . Financial  Statements.  Tenant,  upon Lease  execution,  and  thereafter  upon
written  request by Landlord,  will provide  Landlord with a copy of its current
financial  statements  consisting  of a balance  sheet,  an earnings  statement,
statement  of changes in  financial  position,  statement of changes in tenant's
equity,  and related  footnotes,  prepared in accordance with generally accepted
accounting  principles.  Such financial statements must be either certified by a
CPA or sworn to as to the  accuracy by Tenant's  most  senior  official  and its
chief financial officer.  The financial statements provided must be as of a date
not more than 12 months prior to the date of request. Landlord shall retain such
statements  in  confidence,  but may  provide  copies to lenders  and  potential
lenders.  If Tenant is publicly  traded,  Landlord will accept Tenant's 10-K and
10-Q reports to the S.E.C. in lieu of the above.

 . Special  Stipulations.  The terms,  covenants and  conditions set forth in any
Articles  of  this  Lease  numbered   higher  than  this  Article  46  ("Special
Stipulations")  are intended to  supplement  and, in certain  events,  modify or
vary, the other provisions set forth in the foregoing  provisions of this Lease.
If any of the Special Stipulations conflict with any of the foregoing provisions
of this  Lease,  the  provisions  set forth in the  Special  Stipulations  shall
control;  provided,  however,  that to the extent the preceding portions of this
Lease may be read in a manner which will not conflict with the provisions of the
Special Stipulations, then such interpretation shall be deemed to be the correct
interpretation of the provisions of this Lease and the Special Stipulations.

 .        Environmental Matters.

         () Tenant  represents  that the list attached hereto as Exhibit E, is a
complete  and accurate  list of chemicals  and  hazardous  materials,  including
approximate  quantities,  to be used and  stored in or about the  Premises.  The
amounts of  chemicals  and  hazardous  materials  will be limited to  quantities
necessary  for the  Tenant's day to day  operations.  Landlord is relying on the
list in  Exhibit  E in not  requiring  Gradual  Pollution  and/or  Contamination
Liability  Insurance.  Should  Tenant's  operation  change such that  additional
chemicals  and/or  quantities  significantly  larger  than those  stipulated  in
Exhibit E are required for Tenant's operation,  Tenant shall notify Landlord and
Landlord  reserves the right to require  Tenant to obtain and  maintain  Gradual
Pollution and/or Contamination  Insurance. The Tenant will, upon written request
from  Landlord,  provide the  Landlord  with an updated  list of  chemicals  and
hazardous materials with quantities located within the Premises.

         () Tenant shall use its best  efforts to obtain,  within 60 days of the
Lease Date,  Sudden and  Accidental  Pollution  and/or  Contamination  Liability
Insurance in a form  acceptable  to the  Landlord.  In the event that the Tenant
fails to obtain such insurance coverage,  the Tenant will reimburse Landlord the
reasonable costs of having the Landlord's environmental consultant inspect, on a
quarterly  basis,  the Tenant's  records and  procedures  regarding the Tenant's
storage,  use, and  disposal of chemicals  and  hazardous  materials  within the
Premises.  Such  reimbursement  will be due as  Additional  Rent pursuant to the
provisions  of this  Lease.  In the  event  that  the  Landlord's  environmental
consultant  finds that the Tenant is not in compliance  with any applicable law,
regulation,  or codes  regarding  the  storage,  use or disposal of chemicals or
hazardous  materials,  such non-compliance shall constitute a default under this
Lease.

         () Tenant shall defend,  indemnify,  and hold  Landlord and  Landlord's
agents, offers, directors,  employees, and contractors harmless against and from
any  and  all  injuries,   costs,  expenses,   liabilities,   losses,   damages,
injunctions, suits, actions, fines, penalties, and demands of any kind or nature
(including  reasonable  attorneys  fees)  occasioned  by or  arising  out  of or
relating to any environmental  pollution,  damage,  condition or problem arising
from the presence of any hazardous substances,  asbestos or other toxic waste as
deemed in any federal,  state, or municipal  governmental or  quasi-governmental
laws, rules,  regulations,  or ordinances in or about the Premises, the Building
or the  Property in  violation  of law that are  existing in the  Premises,  the
Building or the Property and only if caused by the acts, omissions or negligence
of Tenant, its agents, or employees.

         () Landlord  shall  defend,  indemnify,  and hold  Tenant and  Tenant's
agents,  officers,  directors,  employees,  and contractors harmless against and
from  any and all  injuries,  costs,  expenses,  liabilities,  losses,  damages,
injunctions, suits, actions, fines, penalties, and demands of any kind or nature
(including reasonable attorney fees) occasioned by or arising out of or relating
to any environmental  pollution,  damage,  condition or problem arising from the
presence of any hazardous  substances,  asbestos or other toxic waste as defined
in any federal,  state, or municipal  governmental or  quasi-governmental  laws,
rules,  regulations,  or  ordinances in or about the Premises or the Building or
the  Property in  violation  of law only if (i) such  hazardous  substances  are
existing in the  Premises  or the  Building  or the  Property  prior to Tenant's
occupancy of the Premises or (ii) caused by the acts, omissions or negligence of
Landlord, its agents, or employees and not caused by Tenant's acts, omissions or
use of the Premises.

 .        Option Term.

         () Tenant shall have the option to renew the term of this Lease for one
(1)  additional  period(s) of five (5) years (the "Option  Term")  following the
expiration  of the initial  lease term provided that this lease is in full force
and effect,  the Tenant or Tenant's  subsidiaries,  affiliates  or successors by
merger  or  acquisition  shall  be in  possession  and  occupying  of  at  least
seventy-five  percent  (75%) the  Premises,  and Tenant  shall not be in default
beyond  the  expiration  of  any  applicable  notice  and  cure  period  in  the
performance  or observance of any of the terms,  conditions,  provisions  and/or
covenants  of the Lease.  All such  rights of a renewal  shall be  exercised  by
delivery to Landlord of written  notice of Tenant's  intention to renew the term
at least nine (9)  months  but not more than  twelve  (12)  months  prior to the
expiration of the men applicable term of the Lease.  The Option Term shall be of
the same terms,  covenants and conditions as the original lease except Base Rent
for the Option Term shall be the then Prevailing Market Rent of comparable space
within the Sterling, Virginia, market area.

                  (i)  Within  fifteen  (15)  business  days  after  receipt  of
Tenant's notice exercising its option to extend the term of this Lease, Landlord
shall notify Tenant of Landlord's  estimate of Prevailing Market Rent. If Tenant
disagrees with Landlord's estimate of Prevailing Market Rent, Tenant may rescind
such renewal notice thereby  terminating  its right of renewal  provided by this
lease,  or Tenant  shall  notify  Landlord  that it has  elected  to submit  the
determination  of  Prevailing  Market  Rent to  Arbitration,  in which event the
provisions  of  subparagraph  (b)(ii)(a)  of this  Article  49 shall  govern the
selection of arbitrators  and the  establishment  of the Prevailing  Market Rent
payable for the year of the then applicable Option Term; provided, however, that
if Tenant does not elect to either  rescind its renewal  notice or to submit the
determination of Prevailing Market Rent to Arbitration  during such fifteen (15)
day period,  then the  Landlord's  estimate of  Prevailing  Market Rent shall be
deemed to be agreed to by Tenant,  and shall be the Base Rent  payable by Tenant
to Landlord during the first year of the then applicable Option Term.

         ()  ()Definition:  As used herein,  the term  'Prevailing  Market Rent'
means the most probable rent (as determined  pursuant to the appraisal procedure
hereinafter set forth) at which the Premises would be leased in a comparable and
open market,  under all conditions  requisite to a fair lease,  the Landlord and
Tenant  each  acting  prudently,  knowledgeable,  and  assuming  the rent is not
affected by undue stimulus.  Implicit in this definition is the  consummation of
the lease of such space beginning on the  commencement  date of the Lease of the
Premises under conditions whereby:

         A. Landlord and Tenant are typically motivated (i.e.,  neither party is
compelled  to enter into a lease and both  parties  are  willing to enter into a
lease).

         B. Both parties are well informed or well  advised,  and each acting in
what it considers its own best interest.

                  1.        A reasonable time is allowed for exposure in the 
open market.

D. The  Prevailing  Market Rent shall be computed as an amount equal to the then
prevailing  market  rental  rate of the  Premises,  as if vacant  with  Building
standard  improvements,  and taking into account the annual  adjustment  of Base
Rent,  Tenant's  obligation to pay Tenant's  Pro-Rata Share of Annual  Operating
Costs and all existing market factors.

E. All of the  terms,  covenants  and  conditions  of the  Lease  (except  terms
respecting the amount of Base Rent) remain in effect throughout the term.

         () In the event of a dispute as to determination  of Prevailing  Market
Rent referred to in this paragraph, such dispute shall be resolved in accordance
with the following:

(a) If  Landlord  and Tenant  fail to agree upon the  Prevailing  Market Rent as
referred to in this paragraph, within the time periods provided for herein, then
Landlord  and Tenant each shall give notice to the other  setting  both the name
and  address  of  a  licensed  real  estate  broker  or  appraiser  (hereinafter
'appraiser')  who shall be a M.A.I.  Real Estate  professional  with substantial
experience  in  commercial  real estate  appraisal  designated by it to make the
determinations  hereafter  required.  Each  appraiser  shall be to calculate the
Prevailing  Market Rent as provided in each of the foregoing  sections  which is
the subject of the dispute and is in  accordance  with the  criteria  referenced
therein.  If either party shall fail to give notice of such designations  within
ten (10) days after failing to agree between themselves, then the appraisal made
by the appraiser so designated shall be the Appraisal Prevailing Market Rent. If
two appraisers have been designated, such two appraisers shall consult with each
other and, within thirty (30) days  thereafter,  issue their  determinations  of
Appraisal  Prevailing  Market Rent in writing,  and give notice  thereof to each
other and to Landlord and Tenant.  If such two appraisers shall concur as to the
determination of the prevailing Market Rent and submit their decision in writing
to  Landlord  and  Tenant,  such  concurrence  shall be final and  binding  upon
Landlord and Tenant.  If the two  determinations of Prevailing Market Rent shall
be within five percent (5%) (measured from the higher  appraisal) of each other,
the  Prevailing  Market  Rent  shall  be  deemed  to be the  average  of the two
appraisers' determinations.  If such two appraisers' determinations shall not so
concur or coincide,  then such two appraisers shall  immediately (i) designate a
third  appraiser,  (ii) prepare detailed  written  appraisals,  and (iii) submit
copies of such appraisal to Landlord,  Tenant and such third arbitrator.  If the
two appraisers  shall fail to agree upon the designation of such third appraiser
within eight (8) days of the date on which the last  determination was rendered,
then  either  party may apply to the  American  Arbitration  Association  or any
successor  thereto having  jurisdiction,  for the designation of such appraiser.
All  arbitrators  shall be licensed real estate  appraisers or brokers who shall
have had at least  ten (10)  years  continuous  experience  in the  business  of
appraising or managing real estate or acting as real estate agents or brokers in
the Sterling, Virginia area. The third appraiser shall conduct such hearings and
investigations  as he may deem  appropriate  and shall,  within twenty (20) days
after the date of designation of the third appraiser,  choose the  determination
of the two appraisers originally selected by the parties which is the nearest to
the determination such third appraiser would have made acting alone and applying
the  standards  set forth  therefor in this Lease,  and that choice by the third
appraiser  shall be binding upon  Landlord and Tenant.  Each party shall pay its
own counsel fees and expenses,  if any, in connection with any arbitration under
this Article, including the expenses and fees of any appraiser selected by it in
accordance  with the provisions of this  paragraph,  and the parties shall share
equally  all other  expenses  and fees of any such  arbitration,  including  the
expenses of the third appraiser.  The determination  rendered in accordance with
the  provisions  of this  paragraph  shall be final and  binding  in fixing  the
Prevailing Market Rent.

However,  in no event shall the Base Rent for the first Lease Year of the Option
Term be less  than the then  Base Rent for the last  Lease  Year of the  initial
Lease Term as escalated by three percent (3%).

 .        Satellite  Dish.  Tenant may install one (1) satellite  dish antenna of
three (3) feet or less in diameter and related  wiring and  facilities  
(the  "Satellite  Dish") on the roof of the  Property  in an area  approved by
Landlord, upon the following terms and conditions:

() The Satellite Dish shall be installed at the sole cost and expense of Tenant.
The exact location of the Satellite Dish and all  construction  and improvements
related thereto are subject to Landlord's approval.

() Tenant agrees to paint the Satellite Dish a color approved by Landlord and to
screen the Satellite Dish so that it is not visible from the common areas of the
Building or adjoining public streets.

() Tenant shall repair promptly, at its own expense, any damage to the Property,
the  Building  or the roof  caused  by the use,  maintenance,  installation,  or
removal  of the  Satellite  Dish or by the  negligence  of  Tenant  or  Tenant's
employees,  agents,  contractors or subcontractors.  The Satellite Dish shall be
removed from the roof of the Property,  and the roof and adjacent areas shall be
surrendered  to Landlord at the  expiration  or sooner  termination  of the term
hereof, in as at least as good condition as existed on the Lease Date, excepting
only depreciation  caused by ordinary wear and tear. The Satellite Dish shall be
used solely in connection with Tenant's business operation in the Premises,  and
shall not be used by any other party.

() Landlord  reserves the right to relocate the  Satellite  Dish,  at Landlord's
expense, at any time during the term of this Lease, to another location will not
unreasonably interfere with satisfactory operation of the Satellite Dish.

() Landlord assumes no liability or  responsibility  for  interference  with the
Satellite Dish caused by the  construction  of the  additional  buildings on the
Property. Tenant agrees to assume all costs for relocation of the Satellite Dish
required if such  relocation  is as a result of the  construction  of additional
buildings on the Property.

() The  Satellite  Dish and  areas  of the roof  used by  Tenant  in  connection
therewith  shall be deemed to be a part of the Premises for purposes of Articles
8, 9, 10, 13, 18, and 19 of this Lease and Tenant  shall  include the  Satellite
Dish within the coverage of all insurance  policies required to be maintained by
Tenant under this Lease.

 . Year 2000.  Landlord  believes that the computer hardware and software for the
portions of the Building and its systems  which are  operated or  maintained  by
Landlord will operate after January 1, 2000. The foregoing  information is based
upon a  republication,  as defined in the Year 2000  Information  and  Readiness
Disclosure  Act,  Public  Law  105-271  (the "Year 2000  Act"),  of  information
received  from  other  parties,  such as  manufacturers,  suppliers  or  service
vendors, which may or may not be intended to be Year 2000 Statements (as defined
in the  Year  2000  Act) by  such  parties.  Landlord  expressly  disclaims  any
liability for the failure of services  provided by any utility  company or other
private,  quasi-governmental  or governmental entities in providing any services
to the Building.

 .  Telecommunications  Access. If any tenant of the Building or surrounding Park
(s) or Building  (s) owned or  controlled  by Landlord  requests in writing that
Landlord    permit    e.spire    Communications,    Inc.   or   its    permitted
successors/assigns,  to provide such tenant  telecommunications  access services
through optic fiber wiring  (hereinafter  referenced to as "Fiber Access") then,
Landlord  shall not  unreasonably  withhold  condition or delay its approval for
Tenant to install,  operate,  maintain, repair and replace fiber optic cable and
associated equipment (the "Facilities") within the Building (also referred to as
the  "Licensed  Premises")  to  provide  its public  utility  telecommunications
services  on a  non-exclusive  basis to or for the  benefit  of  tenants  of the
Building. In connection herewith:

         () Landlord  shall  provide  Tenant  reasonable  access to vertical and
horizontal shafts to enable Tenant to provide its telecommunications services to
tenants of the Building.

         () Following notice to and approval of all plans and  specifications by
Landlord.  Tenant  shall have right of access to the  Building  and the right to
construct,  where  necessary and at its expense,  building  entrance and conduit
facilities  associated  with  providing its  telecommunications  services in the
Building.

         () Nothing  contained  herein  shall be construed as granting to tenant
any property or ownership  rights in the Building or to create a partnership  or
joint venture between Landlord or Tenant.

         () Tenant shall defend,  indemnify and save Landlord  harmless from and
against all claims, liabilities, suits, fines, penalties, damages, losses, fees,
costs and expenses, including attorney fees, which may be imposed upon, incurred
by, or served against Landlord by reason of:

         ()  any  work  or  thing  done  by or on  behalf  of the  Tenant,  or  
any  of  its  agents,  contractors, subcontractors, servants, employees or 
invitees, in or about the Landlord's Building or any parts thereof;

         () any use, occupation,  condition,  or operation by the Tenant, or any
of its agents, contractors,  subcontractors,  servants,  employees,  Tenants, or
invitees,  in or about the Premises or the Building or any part thereof,  or any
passageway  or space  adjacent  thereto,  or  elsewhere  in the  Premises or the
Building;

         () any act or  omission  on the part of the Tenant,  or any of its  
agents,  contractors,  subcontractors,
servants, employees, Tenants, or invitees;

         () any  occurrence,  accident,  injury  (including  death),  or damage,
directly or indirectly  caused by the Tenant or any of its agents,  contractors,
subcontractors,  servants,  employees,  Tenants,  or  invitees  to any person or
property carried in, or about the Licensed  Premises or any part thereof,  or in
or about the Premises or the Building;

         () any lien  arising as a result of any of Tenant's  actions or 
omissions  with respect to its  activities on or with respect to the Licensed 
Premises or the Facilities; and

         () failure of Tenant to vacate the Licensed  Premises or to remove the
Facilities as required  under this Lease.

The Facilities  shall be deemed to be a part of the Premises for all purposes of
the Lease including, without limitation, Articles 7, 8, 9, 13, 17 and 18.

All local,  state or federal  permits  necessary  for the use of the  Facilities
shall be obtained  by the Tenant at Tenant's  sole cost and expense and prior to
the use herein  contemplated.  Tenant shall have its public  liability and other
insurance policies endorsed to include the Facilities as a part of the Premises.

 .        LETTER OF CREDIT.  For purposes of this Article 53 only,  the Rent 
Commencement  Date shall mean July 15, 1999.

() In order to secure the prompt  payment of Minimum  Rent and  Additional  Rent
under the Lease (the "Lease  Liabilities")  Tenant has on this date delivered to
Landlord a letter of credit Number  SB-902185-0101,  in favor of Landlord as the
beneficiary, issued by The First National Bank of Maryland in the initial amount
of Three Hundred Fifty Thousand and 00/100 Dollars ($350,000.00),  together with
all renewals and extensions  thereof and  substitutions  therefor,  and all cash
proceeds  thereof (all of the foregoing are herein  collectively  referred to as
the ("Letter of Credit").  The Letter of Credit shall provide by its Terms that,
if  Landlord  has not  notified  the  issuer  of the  occurrence  of an event of
default,  the amount  thereof shall be reduced by the sum of (i) Fifty  Thousand
Dollars and 00/100  Dollars  ($50,000.00)  on the third  anniversary of the Rent
Commencement Date; (ii) One Hundred Thousand and 00/100 Dollars ($100,000.00) on
the fourth anniversary of the Rent Commencement Date; (iii) One Hundred Thousand
and  00/100  Dollars   ($100,000.00)  on  the  fifth  anniversary  of  the  Rent
Commencement  Date;  (iv) Fifty Thousand and 00/100 Dollars  ($50,000.00) on the
sixth anniversary of the Rent  Commencement  Date. At no time during the term of
this Lease  (including  renewals)  shall the Letter of Credit be less than Fifty
Thousand 00/100 Dollars ($50,00.00).  In the alternative,  Tenant may provide an
initial  Letter of Credit in the  amount of Three  Hundred  Fifty  Thousand  and
00/100  Dollars  ($350,000.00)  expiring  on the third  anniversary  of the Rent
Commencement  Date,  in which event,  Tenant shall provide to Landlord not later
than thirty (30) days prior to such date, a replacement  Letter of Credit in the
amount then required to be maintained by Tenant under this Lease,  providing for
an  additional  term of not less than one (l) year.  If Tenant fails to renew or
replace the Letter of Credit as  aforesaid,  Landlord  may present the Letter of
Credit for payment by the issuer thereof,  and retain the proceeds of the Letter
of Credit as the Security Deposit under this Lease, and, if Landlord retains the
proceeds of the Letter of Credit as the Security Deposit, Landlord may commingle
the deposit with its own funds.  If Tenant defaults in the payment of rent or in
the  performance  or observance of any other  obligations to be performed on its
part under this Lease and does not cure such default  within any notice and cure
period provided for in this Lease, Landlord may present the Letter of Credit for
payment by the issuer  thereof and apply the proceeds to payment of Minimum Rent
or Additional Rent in default,  and/or to the prepayment of the Minimum Rent for
any subsequent  period of the term and/or to any amount to which Landlord may be
entitled  under this Lease;  and Tenant shall  promptly  thereafter  restore the
Letter of Credit to the original amount above  specified.  The right of Landlord
to apply the  Proceeds of the Letter of Credit as above  specified  shall not be
construed  as a  limitation  upon  Landlord's  right to invoke any other  remedy
available  under this Lease or at law or equity for breach of this Lease,  or to
collect  the full amount of damages  owing by Tenant on account of such  breach.
If, by reason of Tenant's  default under this Lease,  Landlord  terminates  this
Lease at any time or reenters the Premises,  Landlord may, at its option, either
retain the  Proceeds  of the Letter of Credit as  liquidated  damages  (applying
against the damages which it suffers but without  waiving its rights to recovery
of  additional  damages to which it may be  entitled) or apply it to the monthly
installments  of  Minimum  Rent and  other  amounts  payable  under  this  Lease
hereunder in inverse order of accrual.

() The  Letter of Credit  shall be issued to  Landlord,  shall be  unconditional
(i.e., without  requirements or conditions for presentation,  honor or payment),
except as expressly  provided  for below,  and shall be  irrevocable  during its
stated term.  The Letter of Credit may state or require  that,  at the time that
Landlord presents the Letter of Credit for payment,  such presentation  shall be
accompanied by a written  statement  executed by any person  purporting to be an
authorized officer of the general partner of Landlord as follows:

         This shall  certify that a default by Tenant in the payment of rent has
         occurred and is continuing under that certain Lease dated  ____________
         by and between  Dulles North Office Park II  Corporation,  as Landlord,
         and e.spire  Communications as Tenant. Any notice or notices of default
         required by such Lease have been given by Landlord to Tenant and Tenant
         has not cured  within any period  for cure  provided  for in the Lease.
         Based upon the foregoing,  Landlord  hereby  presents Letter Credit No.
         SB-902185-0101  for payment and hereby  demands that the issuer thereof
         draw upon such Letter of Credit and remit the proceeds of the Letter of
         Credit to Landlord."

() Any Letter of Credit  which has an  expiration  date prior to the  expiration
date of the term of this Lease  (including any Option Terms exercised by Tenant)
shall also  provide  that  Landlord may present the Letter of Credit for payment
when accompanied by the following written statement:

         "Tenant  has failed to renew or replace  the Letter of Credit  prior to
         ten (10) days before its  expiration  date, and Landlord is accordingly
         entitled to draw upon the Letter of Credit."

() The Letter of Credit shall also  expressly  state and provide that the issuer
is entitled to rely on any statement in the forms  provided above which purports
on its face to be executed by an officer of Landlord, and that the issuer is not
obligated  to  verify  the  authority  of any such  person to  execute  any such
statement  on  Landlord's  behalf,  nor shall the issuer be liable in any manner
whatsoever if any such statement is found to have been  improperly  delivered by
Landlord,  or if such statement is delivered by a person not duly  authorized to
do so on Landlord's behalf.

() In addition to all other  rights  available  to it under  applicable  laws or
otherwise: (a) Landlord, in conjunction with the assignment, pledge, or transfer
of its  interest  as  Landlord  under the Lease,  shall have the right to assign
therewith Landlord's rights in the Letter of Credit, and any assignee,  pledges,
or transferee  shall have the rights of Landlord  hereunder  with respect to the
Letter of Credit so assigned,  pledged,  or  transferred,  and Landlord shall be
thereafter  relieved  from all duties with respect to any such Letter of Credit;
provided  Landlord  provides Tenant with written  documentation  evidencing such
assignment, pledge or transfer.

 . Additional Area. Subject to the federal,  state and local laws, ordinances and
regulations,  Tenant may utilize an exterior area of not more than seven hundred
fifty (750)  square feet unless  approved by Landlord,  such  approval not to be
unreasonably  withheld or delayed  (hereinafter  referred to as the  "Additional
Area")  adjacent to the Building  which shall be located in an area to be agreed
upon by Landlord and Tenant  solely to install,  operate,  maintain,  repair and
replace during the term of this Lease, at its sole cost and expense, a generator
or generators of sufficient  capacity to provide  approximately  2,500 kilowatts
and an  appropriately  sized fossil fuel  storage  tank,  together  with related
wiring,  piping  and  equipment  including  pipes  and  conduit  to and from the
Premises to the generator,  and for no other purpose whatsoever.  Tenant, at its
sole cost and expense,  shall maintain the Additional Area in a safe,  clean and
orderly  condition.  All  work in the  Additional  Area  shall be  performed  in
accordance  with Article 9. The Additional  Area shall be deemed to be a part of
the  Premises  for all  purposes  of the  Lease  including  without  limitation,
Articles  7, 8, 9, 12, l 3, 17,  l8,  21 and 23.  All  local,  state or  federal
permits  necessary for the use of the Additional  Area shall be obtained for the
Tenant by Landlord at Tenant's sole cost and expense and prior to the use herein
contemplated.  Tenant  shall  have its  public  liability  and  other  insurance
policies endorsed to include the Additional Area as a part of the Premises.

Any parking  spaces  displaced  by the  Additional  Area shall be deducted  from
Tenant's parking  allotment under Article 22. Tenant shall install,  at its sole
cost and expense,  ballards or fencing with locks,  to secure same,  around this
Additional Area to protect its emergency generator and fuel storage tank.

 . Landlord  Wavier.  Landlord  waives any lien rights it may have concerning the
telecommunications   equipment,  cabling.  Wiring  and  related  equipment  (the
"Network  Operation  Center  Equipment")  which  are  deemed  Tenant's  personal
property and not fixtures,  and the Network  Operation  Center  Equipment may be
removed at any time  without  Landlord's  consent.  Landlord  acknowledges  that
Tenant has entered into a financing  arrangement  including promissory notes and
financial and security  agreements  for the  financing of the Network  Operation
Center Equipment (the "Network  Operation Center  Equipment") with a third party
financing  entity  (and  may in  the  future  enter  into  additional  financing
arrangements with other financing entities).  In connection therewith,  Landlord
(i) consents to the installation of the Network Operation Center Equipment; (ii)
disclaims any interest in the Network Operation Center Equipment, as fixtures or
otherwise;  and (iii)  agrees  that the Telecom  Equipment  shall be exempt from
execution,  foreclosure,  sale, levy,  attachment,  or distress for any Rent (or
additional rent) due or to become due.

 . Services of Landlord.  Landlord shall furnish reasonably adequate services and
management  for gardening  and  landscaping  of the  Property;  removal of snow,
trash,  rubbish,  garbage and other refuse and such other matters as fall within
the definition of Annual Operating Costs as defined in Subparagraph  5(f) above.
Notwithstanding  the above,  Landlord shall not be liable for failure to furnish
or for  suspension  or delay in furnishing  such  services or management  due to
breakdown,   maintenance  or  repair  work,   strike,   riot,  civil  commotion,
governmental  action  or any  other  cause  beyond  the  reasonable  control  of
Landlord,  or  for  the  interruption  of  service  for  reasonable  periods  in
connection with construction  work being performed on the Premises,  Building or
Property,  but Landlord shall use reasonable  efforts not to affect Tenant's use
of the  Premises,  Building  or Property as a result  thereof.  Interruption  of
service(s) that continues beyond three (3) consecutive days shall entitle Tenant
to an abatement of rent.



<PAGE>


IN WITNESS  WHEREOF,  the parties  hereto have executed this Lease under seal on
the day and year first above written.

ATTEST:                                  LANDLORD:
                                         Dulles North Office Park II Corporation

                                         By:

___________________________________      By:________________________________
(SEAL)
                                         Name (Print):________________________
                                         Title:_______________________________
ATTEST/WITNESS:                          TENANT:


___________________________________      By:________________________________
(SEAL)
                                         Name (Print):________________________
                                         Title:_______________________________

                                     Tenant's Tax I.d. Number or Social Security

                                     Number:_________-_________-_________




<PAGE>


                                    EXHIBIT A

                                DEMISED PREMISES



<PAGE>


                                    EXHIBIT B

                              RULES AND REGULATIONS

 . No advertisement,  or other notice, shall be inscribed,  painted or affixed on
any part of the outside or inside of said Building,  except of such order,  size
and style, and at such places as shall be designated by Landlord. All signs will
be supplied for tenants by Landlord,  the cost of the signs to be charged to and
paid for by tenants.

 . The sidewalks and entry passages  shall not be obstructed by tenants,  or used
by them for any  purpose  other than for ingress  and  egress.  The floors,  and
skylights  and  windows  that  reflect  or admit  light  into any  place in said
Building,  shall not be covered or  obstructed  by  tenants  without  Landlord's
approval which shall not be unreasonably  withheld or delayed. The water closets
and other water  apparatus,  shall not be used for any other  purpose than those
for which they were constructed and no sweepings,  rubbish, or other obstructing
substances  shall be  thrown  therein.  Any  damage  resulting  to  them,  or to
associated  systems,  from  misuse,  shall be  repaired  by tenant who, or whose
clerks, agents, invitees, or servants shall cause it.

 . No tenant  shall do or permit  to be done in said  Premises,  or bring or keep
anything  therein,  which shall in any way obstruct or interfere with the rights
of other tenants or in any way injure or annoy them.  Tenants,  their clerks and
servants,  shall  maintain  order in the Building,  shall not make or permit any
improper  noise in the Building or  interfere  in any way with other  tenants or
those  having  business  with them.  Nothing  shall be thrown by Tenants,  their
clerks or servants,  out of the windows,  doors or skylights of the Building. No
rooms shall be occupied or used as sleeping or lodging  apartments  at any time.
No part of the Building shall be used or in any way  appropriated  for gambling,
immoral or other unlawful practices, and no intoxicating liquor or liquors shall
be sold in said Building.

 .        It is  understood  and agreed that the  Landlord  shall not be  
responsible  to any tenant for any loss of property from rented premises, 
however occurring.

 .        No animals (other than guide dogs) shall be allowed in the office, 
halls,  corridors,  or elsewhere in the Building.

 . All tenants and occupants  shall observe  strict care not to leave their doors
open when it rains or snows,  and for any fault or  carelessness in this respect
shall make good any injury  sustained  by other  tenants,  and to  Landlord  for
damage to paint,  plastering or other parts of the Building  resulting from such
default  or  carelessness.  No  alterations  shall  be made  to any  part of the
Building by putting up or changing any partitions,  doors or windows,  nor shall
there be any  connection  made to the electric  wires or electric  fixtures,  or
plumbing lines nor shall there be any penetrations  through the walls,  floor or
roof  without the  consent in writing on each  occasion of Landlord or its Agent
except as otherwise  specifically  provided in the Lease.  All glass,  locks and
trimmings in or upon the doors and windows of the  Building  shall be kept whole
and,  when any part  thereof  shall be  broken,  the same  shall be  immediately
replaced  or  repaired  and  put  in  order  under  the  direction  and  to  the
satisfaction  of  Landlord,  or its  Agent,  and shall be left whole and in good
repair. Tenant shall not injure,  overload or deface the Building,  the woodwork
or the walls of the  Premises,  nor carry on upon the  Premises  any noise some,
noxious, noisy, or offensive business.

 . Fifty-five (55) keys will be provided upon initial  occupancy;  the charge for
additional  keys shall be Five Dollars  ($5.00)  each.  No  additional  locks or
latches shall be put upon any door without written consent of Landlord. Tenants,
at  termination  of their lease of the premises,  shall return to Landlord,  all
keys to doors in the Building.

 .        Landlord  in all cases  retains  the power to  prescribe  the weight 
and  position  of iron safes or other heavy articles.

 . The tenant shall not (without the Landlord's prior written consent) install or
operate any electric heating device,  steam engine,  boiler,  machinery or stove
upon the  Premises,  or carry on any  mechanical  business  thereon  subject  to
Landlord's approval,  or do any cooking thereon, or use or allow to be used upon
the Demised  Premises oil,  burning fluids,  camphene,  gasoline or kerosene for
heating,  warming or lighting.  No article deemed extra  hazardous on account of
fire and no explosives  shall be brought into said Premises.  No offensive gases
or liquids will be permitted.

 . If tenants  desire  blinds or window  covering,  other than those  provided by
Landlord,  if any,  they must be of such  shape,  color and  material  as may be
prescribed by Landlord,  and shall be erected with Landlord's  prior consent and
at the expense of said tenants. No awnings shall be placed on said Building.

 .        Except for the storage of trash or rubbish in  dumpsters  provided by  
Landlord,  Tenant  shall not permit storage of any kind outside of the Premises.

 .  Tenants  and  occupants  shall  observe  and obey  all  parking  and  traffic
regulations  as imposed  by  Landlord  on the  Property.  Landlord  in all cases
retains the power to designate "No Parking"  zones,  traffic right of ways,  and
general parking area procedures.

 .  Tenant  shall  instruct  all  delivery  companies  that any  vehicles  making
deliveries to the Demised  Premises shall use the truck access road provided for
such use and park only in designated loading areas.

 .        Unless  otherwise  agreed  upon,  in  writing,  Landlord  will  arrange
and  contract  for  all  heating, ventilating and air conditioning maintenance 
and repairs.

 . Except as otherwise  specifically  provided in the Lease,  neither Tenant, nor
Tenant's agents,  invitees, or contractors shall be permitted access to the roof
of the Building.

 . The Landlord reserves the right to make such other rules and regulations as in
its  judgement  may  from  time to time be  needed  for  the  safety,  care  and
cleanliness of the Premises,  and for the preservation of order therein Landlord
agrees that it will use diligent, commercially reasonable efforts to enforce the
rules and regulations in a non-discriminatory manner.

 . Violation  of these rules,  or any  amendments  thereof or additions  thereto,
which  continues  for twenty (20) days after  written  notice  from  Landlord to
Tenant, shall be sufficient cause for termination of this Lease at the option of
Landlord.



<PAGE>


                                    EXHIBIT C

                           OUTLINE OF LANDLORD'S WORK:
                                "COLD DARK SHELL"

Landlord shall perform the work described below in accordance Landlord's Plans.

 .        FRAME

         A structural frame of steel, concrete or masonry  construction,  or any
         combination of these,  with a floor design to carry and provide for 150
         psf load.  Clear  height  to the  bottom  of the roof  joists  shall be
         approximately  13'-6"  to  14'-6"  except  in  Tenant's   "Repository",
         approximately  6,000 sf in the rear of the  Premises,  which shall be a
         minimum of 16'-0".

 .        ROOF

         A  roof  system,  as  designed  by  Landlord  and  in  accordance  with
applicable building codes.

 .        EXTERIOR WALLS

         Exterior  building walls shall be of  non-combustible  construction  as
         provided by Landlord.  Landlord  will  provide a brick  exterior in the
         front of the building and a painted  block  (Standard  CMU) exterior at
         the rear of the building.

 .        FLOOR SYSTEM

         Landlord will provide a 5" thick concrete floor slab.

 .        PLUMBING

         Landlord  will  provide a 4" sanitary  waste line to the building to be
         shared by all tenants. Tenant shall be solely responsible for all costs
         of obtaining required water meter(s).

 .        ELECTRICAL SERVICE

         Landlord  will provide  2,000 Amps to the building via a 480/277  volt,
         3-phase, 4-wire electrical service, to be shared by all tenants.

         Tenant  shall  apply to the  local  utility  company  to have  electric
         service established in its name and shall be solely responsible for all
         costs of  obtaining  such  service and for all costs of  providing  and
         installing the required electric meter(s).

 .        FIRE PROTECTION

         Landlord  will  provide a complete,  automatic  wet  sprinkler  system,
         installed facing the underside of the roof deck.  Landlord will provide
         approximately  one sprinkler head per 150 sf of Premises with sprinkler
         heads turned up.

 .        STOREFRONT

         Landlord  will  construct  a  complete  storefront  including,  without
         limitation, glass and glazing and door(s).


<PAGE>


                                    EXHIBIT D

                            COMMENCEMENT AND ESTOPPEL


THIS COMMENCEMENT AND ESTOPPEL  AGREEMENT is made and entered into this ____ day
of   __,   19__,   by   and   between   ____________________    ("Tenant")   and
_________________ _________________________ ("Landlord").

WHEREAS,  Landlord and Tenant have  heretofore  entered into that certain  Lease
Agreement    dated    ________   (the    "Lease"),    for   certain   space   at
____________________ .

WHEREAS,   paragraph  ____  of  the  Lease  provides  for  the  execution  of  a
commencement  agreement  specifying  the  commencement  date of the  term of the
Lease;

NOW,  THEREFORE,  in  consideration  of the  premises,  and for  other  good and
valuable  consideration,   the  receipt  and  sufficiency  of  which  is  hereby
acknowledged, each party hereby warrants and represents to the other as follows:

 .        That Tenant is in full and complete possession of the Demised Premises,
         such  possession  having been delivered by the Landlord and having been
         accepted by the undersigned.

 .        That the Landlord's improvements,  if any, and the space required to be
         furnished by the terms of the Lease have been completed in all respects
         and are open for the use of the Tenant,  its  customers,  employees and
         invitees.

 .        That all duties of an inducement nature required of the Landlord in 
         said Lease have been fulfilled.

 .        That said Lease is in full force and effect;  that there is no existing
         default on the part of the  Landlord  in the terms  thereof;  and that,
         except as  hereinafter  set  forth,  said  Lease has not been  amended,
         modified,  supplemented  or  superseded:  ____________________  [insert
         "N/A" if not applicable].

 .        That no rents have been prepaid except as provided by said Lease;  that
         Tenant does not now have or hold any claim against Landlord which might
         be set off or credited against future accruing rent.

 .        That  Tenant  has  received  no  notice  of  a  prior  sale,  transfer,
         assignment,  hypothecation  or pledge of the said Lease or of the rents
         secured therein, except to Landlord.

 .        That the Rent  Commencement  Date for the  Lease is the ____ day of  
         ________,  19__ and the  Lease  shall
         expire at midnight on the ____ day of ________, 19__.

 .        Any agreement,  obligation, or liability made, entered into or incurred
         by  or  on  behalf  of  Landlord  binds  only  its  property,   and  no
         shareholder,  trustee,  officer,  or agent of the  Landlord  assumes or
         shall be held to any liability therefor.

IN WITNESS  WHEREOF,  the parties hereto do hereby execute this Agreement  under
seal on the day and year first above written.

ATTEST:                                    TENANT:

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

___________________________________         By:________________________________
Secretary                                   Printed Name:_______________________
                                            Its:________________________________
ATTEST:                                     LANDLORD:

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

___________________________________          By:________________________________
                                             Printed Name:______________________
                                             Its:_______________________________



<PAGE>


                                    EXHIBIT E

OPTION SPACE




                                   EXHIBIT 11

                          e.spire COMMUNICATIONS, INC.
              STATEMENT RE COMPUTATION OF PER SHARE EARNINGS (LOSS)
                     ($ in thousands, except per share data)

                                               Three months ended March 31,
                                            1999                   1998
                                     -------------------    --------------------

Net Loss                                 $ (57,188)              $(32,095)

Less: Preferred Stock Accretion              9,697                   8,493
                                     -------------------    --------------------

Net Loss to Common Stockholders            (66,885)                (40,588)

Add: Convertible Preferred 
     Dividends Saved                         9,697                   8,493

Net Loss to Common Stockholders,
    Dilutive Basis                       $ (57,188)              $(32,095)
                                     ===================    ====================


                     AVERAGE SHARES OUTSTANDING

Weighted Average Number of
  Common Shares Outstanding              48,687,218              37,709,282

Net additional shares assuming 
  stock options and warrants
  exercised and proceeds used 
  to purchase treasury stock              1,271,505              11,938,445
                                     -------------------    --------------------

Weighted average number of common and
  common equivalent shares outstanding   49,958,723              49,647,727
                                      ==================    ====================


                          PER SHARE AMOUNTS

Basic earnings per share                     $ (1.37)                $ (1.08)
                                      ==================    ====================

Diluted earnings per share                   $ (1.14)                $ (0.65)
                                      ==================    ====================


<TABLE> <S> <C>


<ARTICLE>                     5
<LEGEND>
     THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM 
     E.SPIRE COMMUNICATIONS, INC. FORM 10-Q FOR THE THREE MONTHS ENDED 3/31/99 
     AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS
</LEGEND>
<MULTIPLIER>                                   1,000
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                              DEC-31-1999
<PERIOD-START>                                 JAN-01-1999
<PERIOD-END>                                   DEC-31-1999
<CASH>                                         247,467
<SECURITIES>                                   0
<RECEIVABLES>                                  85,623
<ALLOWANCES>                                   (10,325)
<INVENTORY>                                    (6,839)
<CURRENT-ASSETS>                               329,604
<PP&E>                                         625,791
<DEPRECIATION>                                 (94,266)
<TOTAL-ASSETS>                                 917,712
<CURRENT-LIABILITIES>                           66,447
<BONDS>                                        736,277
                                0
                                    250,724
<COMMON>                                           493
<OTHER-SE>                                    (167,066)
<TOTAL-LIABILITY-AND-EQUITY>                   917,712
<SALES>                                              0
<TOTAL-REVENUES>                                58,073
<CGS>                                           37,237
<TOTAL-COSTS>                                   59,446
<OTHER-EXPENSES>                                (4,267)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              22,845
<INCOME-PRETAX>                                (57,188)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                            (57,188)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   (57,188)
<EPS-PRIMARY>                                    (1.37)
<EPS-DILUTED>                                    (1.37)
        


</TABLE>



EXHIBIT 99

e.spire COMMUNICATIONS, INC.
SUPPLEMENTAL FINANCIAL INFORMATION
YEAR TO DATE - MARCH 31, 1999
($'s in thousands)

<TABLE>
<CAPTION>
                         Networks          Networks        Networks      Networks
                          Placed            Placed          Placed        Placed
                        in Service       in Service       in Service     in Service
                      Prior to 12/31/95   During 1996     During 1997    During 1998
                      ----------------------------------------------------------------
<S>                        <C>              <C>              <C>          <C>    
Property, Plant &          $ 173,295        $ 123,996        $ 166,774    $  45,383
Equipment                                    

Revenues                   $  13,697        $   8,725        $   8,882    $   1,550

EBITDA                     $   5,109        $     196        $  (1,405)   $  (2,638)

EBIT                       $   2,812        $  (1,647)       $  (3,618)   $  (3,318)

Network Statistics (cumulative)
    Access Lines
      Installed                43,114          24,045           58,479        9,496
    Fiber Miles                45,119          40,085           47,482       24,528
    Route Miles                   759             460              410          152
    Buildings
      Connected                 1,647             684              890           10
    Voice Grade
      Equivalents             654,527         387,949          306,699        1,803


</TABLE>






© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission