GST TELECOMMUNICATIONS INC
S-4, 1998-08-04
TELEPHONE COMMUNICATIONS (NO RADIOTELEPHONE)
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     As filed with the Securities and Exchange Commission on August 4, 1998
                                                 Registration No. 333-
                                                 Registration No. 333-
                                                 Registration No. 333-


                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

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


                                    FORM S-4
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933
                      ------------------------------------


                            GST NETWORK FUNDING, INC.
                                  GST USA, INC.
                          GST TELECOMMUNICATIONS, INC.
           (Exact name of Registrants as specified in their charters)

<TABLE>
<CAPTION>

<S>                                    <C>                                                     <C>
           DELAWARE                                      4813                                     13-4001870
           DELAWARE                    (Primary Standard Industrial Classification                83-0310464
           CANADA                                   Code Number)                               Not Applicable
   (State or other jurisdiction                                                               (I.R.S. Employer
of incorporation or organization)                                                             Identification No.)
</TABLE>

                            GST NETWORK FUNDING, INC.
                                  GST USA, INC.
                          GST TELECOMMUNICATIONS, INC.
                                4001 MAIN STREET
                           VANCOUVER, WASHINGTON 98663
                                 (360) 906-7100

   (Address and telephone number of registrants' principal executive offices)

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


                               DANIEL L. TRAMPUSH
                            GST NETWORK FUNDING, INC.
                                  GST USA, INC.
                          GST TELECOMMUNICATIONS, INC.
                             CHIEF FINANCIAL OFFICER
                                4001 MAIN STREET
                           VANCOUVER, WASHINGTON 98663
                            TELEPHONE: (360) 906-7100
                            FACSIMILE: (360) 906-7150
    (Name, address and telephone number of agent for service for registrants)

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


                                    Copy to:

                              DAVID J. ADLER, ESQ.
                     OLSHAN GRUNDMAN FROME & ROSENZWEIG LLP
                                 505 PARK AVENUE
                            NEW YORK, NEW YORK 10022
                            TELEPHONE: (212) 753-7200
                            FACSIMILE: (212) 755-1467

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


         APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED EXCHANGE OFFER: As soon as
practicable after this Registration Statement becomes effective.

         If the  securities  being  registered on this Form are being offered in
connection  with the formation of a holding company and there is compliance with
General Instruction G, check the following box. / /

         If this form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the  Securities  Act,  check the following box and
list the Securities Act registration  statement number of the earlier  effective
registration statement for the same offering. / /

         If this  form is a post  effective  amendment  filed  pursuant  to Rule
462(d) under the Securities Act, check the following box and list the Securities
Act registration number of the earlier effective  registration statement for the
same offering. / /

<PAGE>

<TABLE>
<CAPTION>

                                              CALCULATION OF REGISTRATION FEE
==================================================================================================================================
                                                                                         Proposed Maximum
        Title of Each Class of                Amount to be        Proposed Maximum      Aggregate Offering         Amount of
      Securities to be Registered              Registered     Offering Price Per Note         Price            Registration Fee
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                           <C>                  <C>                    <C>                      <C>
10 1/2% Senior Secured Discount Exchange      $302,281,818         $604.56(2)             $302,281,818(2)          $89,173.14
Notes Due 2008(1)
==================================================================================================================================
</TABLE>

(1)      The  conditional  assumption  of,  and  the  conditional  guarantee  of
         principal and interest on, the Notes is also being  registered  hereby.
(2)      Represents  Accreted  Value  of  a  Note  and  of  all  of  the  Notes,
         respectively, at May 31, 1998.


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


         THE REGISTRANTS  HEREBY AMEND THIS REGISTRATION  STATEMENT ON SUCH DATE
OR DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE  DATE UNTIL THE  REGISTRANTS
SHALL FILE A FURTHER AMENDMENT WHICH SPECIFICALLY  STATES THAT THIS REGISTRATION
STATEMENT SHALL  THEREAFTER  BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
THE  SECURITIES  ACT OF 1933 OR UNTIL THE  REGISTRATION  STATEMENT  SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION,  ACTING PURSUANT TO SAID SECTION 8(A),
MAY DETERMINE.

<PAGE>
Information   contained  herein  is  subject  to  completion  or  amendment.   A
registration  statement  relating  to these  securities  has been filed with the
Securities  and Exchange  Commission.  These  securities may not be sold nor may
offers to buy be accepted prior to the time the registration  statement  becomes
effective.  This prospectus shall not constitute an offer to buy nor shall there
be any sale of these  securities in any state in which such offer,  solicitation
or sale would be  unlawful  prior to  registration  or  qualification  under the
securities laws of any such state.

PROSPECTUS (Subject to Completion)
DATED AUGUST 4, 1998

                                OFFER TO EXCHANGE
             10 1/2% SENIOR SECURED DISCOUNT EXCHANGE NOTES DUE 2008
                                       FOR
                                 ALL OUTSTANDING
                 10 1/2% SENIOR SECURED DISCOUNT NOTES DUE 2008
   ($302,281,818 MILLION AGGREGATE ACCRETED VALUE OUTSTANDING AT MAY 31, 1998)

                                       OF

                            GST NETWORK FUNDING, INC.

     WHICH, UNDER CERTAIN CIRCUMSTANCES, MAY BE ASSUMED BY GST USA, INC. AND
                   GUARANTEED BY GST TELECOMMUNICATIONS, INC.


                               THE EXCHANGE OFFER
                  WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME
                     ON __________ __, 1998, UNLESS EXTENDED


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


         SEE "RISK FACTORS"  IMMEDIATELY  FOLLOWING THE PROSPECTUS SUMMARY FOR A
DISCUSSION OF CERTAIN  INFORMATION  THAT SHOULD BE CONSIDERED IN CONNECTION WITH
THE EXCHANGE OFFER AND AN INVESTMENT IN THE NEW NOTES.

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

          THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE
          SECURITIES AND EXCHANGE COMMISSION OR BY ANY STATE SECURITIES
          COMMISSION NOR HAS THE SECURITIES AND EXCHANGE COMMISSION OR
           ANY STATE SECURITIES COMMISSION PASSED UPON THE ACCURACY OR
             ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE
                         CONTRARY IS A CRIMINAL OFFENSE.

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

                   THE DATE OF THIS PROSPECTUS IS _____, 1998

                                                        (CONTINUED ON NEXT PAGE)

<PAGE>
(COVER PAGE CONTINUED)

         GST Network  Funding,  Inc., a Delaware  corporation  ("GST  Network"),
hereby  offers,  upon the terms and subject to the  conditions set forth in this
Prospectus and the accompanying Letter of Transmittal (the "Exchange Offer"), to
exchange  $1,000  principal  amount at maturity  of its 10 1/2%  Senior  Secured
Discount  Exchange  Notes Due 2008 (the "New  Notes") for each $1,000  principal
amount at maturity of its outstanding 10 1/2% Senior Secured  Discount Notes Due
2008 (the "Old Notes"). The offer and sale of the New Notes are being registered
under the Securities Act of 1933, as amended (the "Securities Act"), pursuant to
the  Registration  Statement  (as  defined  herein)  of  which  this  Prospectus
constitutes a part. As of May 31, 1998, $302.3 million Accreted Value of the Old
Notes was outstanding. The Exchange Offer is being made pursuant to the terms of
the registration  rights agreement (the  "Registration  Rights Agreement") dated
May 4,  1998,  by and  among  GST  Network,  GST  USA,  Inc.  ("GST  USA"),  GST
Telecommunications, Inc. ("GST"), and Morgan Stanley & Co. Incorporated ("Morgan
Stanley"), Bear, Stearns & Co. Inc. ("Bear Stearns"), Credit Suisse First Boston
Corporation  ("Credit  Suisse First  Boston")  and SBC Warburg  Dillon Read Inc.
("Warburg Dillon Read" and together with Morgan Stanley, Bear Stearns and Credit
Suisse First Boston,  the "Placement  Agents") as Placement Agents,  pursuant to
the terms of the  Placement  Agreement  dated April 29,  1998,  by and among GST
Network,  GST and the  Placement  Agents.  The New  Notes  and the Old Notes are
collectively  referred  to  herein  as the  "Notes."  As used  herein,  the term
"Holder" means a holder of the Notes.

         THE NOTES ARE SENIOR,  SECURED OBLIGATIONS OF GST NETWORK,  AND WILL BE
UNCONDITIONALLY AND IRREVOCABLY ASSUMED BY GST USA AND GUARANTEED BY GST, ON MAY
1,  2003,  OR  EARLIER  IF  PERMITTED  UNDER  THE  TERMS OF GST  USA'S AND GST'S
OUTSTANDING  INDEBTEDNESS.  Neither  GST USA  will be  liable  on,  nor will GST
guarantee  the Notes until they are assumed by GST USA.  There is a  substantial
risk that GST USA may be unable to assume  the Notes by May 1,  2003.  See "Risk
Factors -- Possible  Inability of GST USA to Assume,  GST to  Guarantee  and GST
Network to Redeem the Notes."

         If and when the Notes are assumed by GST USA, the Notes will be senior,
secured  indebtedness of GST USA and GST USA's  obligations under the Notes will
be fully and unconditionally  guaranteed on an unsubordinated  basis by GST (the
"Note Guarantee").  The Note Guarantee will be senior, unsecured indebtedness of
GST. At June 30, 1998, GST Network had no outstanding  borrowings other than the
Notes. GST Network is a wholly-owned,  special purpose finance subsidiary of GST
USA, and GST USA and GST are each holding  companies.  GST USA is a wholly-owned
subsidiary of GST that owns,  directly or  indirectly,  the capital stock of all
but one of GST's operating subsidiaries.

         GST  Network  will accept for  exchange  any and all Old Notes that are
validly tendered and not withdrawn on or prior to 5:00 p.m., New York City time,
on the date the Exchange  Offer  expires,  which will be __________ __, 1998 [20
BUSINESS DAYS AFTER  COMMENCEMENT  OF THE EXCHANGE  OFFER],  unless the Exchange
Offer is extended (the "Expiration Date"). Tenders of Old Notes may be withdrawn
at any time prior to 5:00 p.m., New York City time, on the Expiration  Date. The
Exchange Offer is not conditioned upon any aggregate minimum principal amount of
Old Notes being tendered for exchange. However, the Exchange Offer is subject to
certain  conditions,  which may be waived by GST  Network,  and to the terms and
provisions of the Registration Rights Agreement.  Old Notes may be tendered only
in denominations  of $1,000 aggregate  principal amount at maturity and integral
multiples  thereof.  GST Network has agreed to pay the  expenses of the Exchange
Offer. See "The Exchange Offer."

         Any waiver,  extension or  termination  of the  Exchange  Offer will be
publicly  announced  by GST  Network  through  a release  to the Dow Jones  News
Service and as otherwise required by applicable law or regulations.

         The Notes were issued in a private placement (the "May Offering") under
an  indenture  (the  "Indenture"),  dated as of May 4,  1998,  by and  among GST
Network,  GST,  GST USA and  United  States  Trust  Company of New York (in such
capacity,  the  "Trustee").  The New Notes will be  obligations  of GST  Network
(until  such time as they may be  assumed  by GST USA) and are  entitled  to the
benefits of the Indenture.  The Indenture provides that GST Network must use all
of the net  proceeds of the May  Offering  (in  addition to any cash on hand) to
purchase United States government securities (the "Pledged Securities") and must
pledge the Pledged Securities to the Trustee


<PAGE>
for the benefit of the Holders.  In addition,  in consideration  for GST Network
making the financing  through the May Offering  available to GST USA and for GST
Network facilitating the purchase of GST USA's equipment,  GST USA has agreed to
reimburse  GST  Network  for any fees or  expenses  incurred  by GST  Network in
connection  therewith and to pay GST Network a commitment fee in an amount equal
to 4.5% per  annum of the  amount  by which the  aggregate  principal  amount at
maturity of the Notes exceeds the aggregate principal amount of all Intercompany
Notes  (as  hereinafter  defined)  then held as  security  for the  Notes.  Such
commitment  fee  shall  be paid  semiannually,  in  arrears,  on each  May 1 and
November  1,  commencing  November  1, 1998,  by GST USA  issuing to GST Network
promissory notes (the "Fee Notes") guaranteed by GST. The Notes are secured by a
first priority security  interest in the Pledged  Securities and in the accounts
established  therefor (the "Pledge  Account") and by a first  priority  security
interest in the Fee Notes. Upon written request from GST Network to the Trustee,
Pledged  Securities will be released from the Pledge Account in order to finance
the  cost  (including,  without  limitation,  the cost of  design,  development,
construction,  acquisition,  installation or integration) of Acquired  Equipment
(the "Acquired Equipment Cost"); provided that the cost of design,  development,
construction,  installation and integration of the Acquired  Equipment shall not
exceed  50% of the  aggregate  Acquired  Equipment  Cost.  Immediately  upon the
acquisition of any Acquired  Equipment,  GST Network must grant a first priority
security  interest in such Acquired  Equipment to the Trustee for the benefit of
the holders of the Notes. GST USA will purchase the Acquired  Equipment from GST
Network  for an amount  equal to the  Acquired  Equipment  Cost and will issue a
senior  secured  promissory  note  guaranteed  by GST in an amount  equal to the
Acquired  Equipment Cost payable to GST Network (an "Intercompany  Note").  Each
Intercompany  Note will mature on May 1, 2003.  GST  Network  will grant a first
priority  security  interest  in all  Intercompany  Notes to the Trustee for the
benefit of the  holders of the Notes.  The  Trustee and the holders of the Notes
will be entitled to foreclose upon the Fee Notes, the Intercompany Notes and the
Acquired  Equipment  upon the occurrence of an Event of Default under the Notes.
See "Risk Factors--Insufficiency of Acquired Equipment to Satisfy the Notes upon
Liquidation."

         The form and  terms of the New  Notes  are  identical  in all  material
respects to the form and terms of the Old Notes,  except that the offer and sale
of the New Notes have been  registered  under the Securities  Act. Any Old Notes
not tendered and accepted in the Exchange Offer will remain outstanding and will
be  entitled  to all the  rights  and  preferences  and will be  subject  to the
limitations  applicable thereto under the Indenture.  Following  consummation of
the Exchange Offer,  the Holders of Old Notes will continue to be subject to the
existing restrictions upon transfer thereof and GST Network will have no further
obligation to such Holders to provide for the registration  under the Securities
Act of the  offer  and  sale  of the  Old  Notes  held by  them.  Following  the
completion  of the  Exchange  Offer,  none of the Notes will be  entitled to the
contingent  increase  in interest  rate  provided  pursuant to the  Registration
Rights Agreement. See "The Exchange Offer."

         The Notes will  mature on May 1,  2008.  The Old Notes were and the New
Notes are being sold at a substantial  discount from their principal  amount and
there will not be any  accrual of  interest  thereon  prior to November 1, 2003.
Each Note will have a principal amount at maturity of $1,000 and had an Accreted
Value of $604.56 at May 31, 1998.  Interest on the Notes will be paid in cash at
a rate of 10 1/2% per annum on each May 1 and November 1, commencing November 1,
2003.

         The Notes will be  redeemable  at the option of GST USA, in whole or in
part,  at any time or from time to time,  on or after May 1, 2003,  initially at
105.250%  of their  principal  amount  at  maturity,  plus  accrued  and  unpaid
interest,  declining ratably to 100% of their principal amount at maturity, plus
accrued and unpaid  interest on or after May 1, 2006. If on May 1, 2003, GST USA
is prohibited by its  outstanding  indebtedness  from assuming all of the Notes,
GST Network  will redeem,  upon not less than 10 nor more than 30 days'  notice,
the portion of the Notes that cannot be assumed,  at 105.250% of their principal
amount at maturity plus accrued and unpaid  interest to the date of  redemption.
In addition,  upon a Change of Control (as hereinafter defined),  GST Network or
GST USA, as the case may be,  will be required to make an offer to purchase  the
Notes at a purchase price equal to 101% of their  principal  amount plus accrued
interest.  See "Description the New Notes -- Mandatory Redemption," "-- Optional
Redemption," and "-- Repurchase of Notes Upon Change of Control."

         Based upon no-action  letters issued by the staff of the Securities and
Exchange  Commission (the  "Commission") to Exxon Capital  Holdings  Corporation
(available May 13, 1988), Morgan Stanley & Co.  Incorporated  (available June 5,
1991) and Shearman & Sterling  (available  July 2, 1993),  GST Network  believes
that New Notes issued  pursuant to this Exchange Offer in exchange for Old Notes
may be offered for resale,  resold and otherwise transferred by a Holder thereof
other than (i) a broker-dealer who purchased such Old Notes directly from

<PAGE>
GST  Network to resell  pursuant to Rule 144A or any other  available  exemption
under the  Securities  Act or (ii) a person that is an  "affiliate"  (within the
meaning  of Rule  405 of the  Securities  Act) of GST  Network,  GST USA or GST,
without compliance with the registration and prospectus  delivery  provisions of
the Securities  Act,  provided that the Holder is acquiring the New Notes in the
ordinary course of its business and is not participating, and has no arrangement
or understanding with any person to participate,  in the distribution of the New
Notes.  Holders of Old Notes who tender in the Exchange Offer with the intention
to participate in a distribution of the New Notes may not rely upon the position
of the staff of the  Commission  enunciated  in the  above-referenced  no-action
letters, and, in the absence of an exemption,  must comply with the registration
and prospectus delivery  requirements of the Securities Act in connection with a
secondary resale transaction. Holders of Old Notes wishing to participate in the
Exchange Offer must  represent to GST Network in the Letter of Transmittal  that
such conditions have been met.

         Each broker-dealer  (other than an "affiliate" of GST Network,  GST USA
or GST) that  receives  New Notes for its own account  pursuant to the  Exchange
Offer  must  acknowledge   that  it  will  deliver  a  prospectus   meeting  the
requirements  of the  Securities  Act in connection  with any resale of such New
Notes.  The  Letter  of  Transmittal  states  that  by so  acknowledging  and by
delivering a prospectus,  a broker-dealer will not be deemed to admit that it is
an "underwriter"  within the meaning of the Securities Act. This Prospectus,  as
it may be  amended  or  supplemented  from  time  to  time,  may  be  used  by a
broker-dealer  in connection  with resales of New Notes received in exchange for
Old Notes where such Old Notes were acquired by such  broker-dealer  as a result
of market-making activities or other trading activities.  GST Network has agreed
that, for a period of 180 days after the  consummation of the Exchange Offer, it
will make this Prospectus  available to any  broker-dealer for use in connection
with any such resale.  See "Plan of  Distribution."  Any broker-dealer who is an
affiliate of GST Network,  GST or GST USA may not rely on such no-action letters
and must comply with the  registration and prospectus  delivery  requirements of
the Securities Act in connection with a secondary resale transaction.

         The New Notes  constitute a new issue of securities with no established
trading market.  GST Network does not intend to list the New Notes on any United
States  securities  exchange  or to seek  approval  for  quotation  through  any
automated quotation system. GST Network has been advised by the Placement Agents
that,  following completion of the Exchange Offer, they currently intend to make
a market in the New Notes; however, the Placement Agents are not obligated to do
so and  any  market-making  activities  with  respect  to the New  Notes  may be
discontinued at any time. The Placement  Agents may act as principal or agent in
such  transactions.  There can be no assurance that an active trading market for
the New Notes  will  develop.  To the  extent  that Old Notes are  tendered  and
accepted in the Exchange Offer, a Holder's  ability to sell untendered Old Notes
could be adversely affected.

         This Prospectus, together with the Letter of Transmittal, is being sent
to all registered Holders of Old Notes as of _____________ __, 1998.

         GST Network will not receive any proceeds from this Exchange  Offer. No
dealer-manager is being used in connection with this Exchange Offer. See "Use of
Proceeds" and "Plan of Distribution."

         No person has been  authorized to give any  information  or to make any
representations in connection with the Exchange Offer other than those contained
in this  Prospectus  and the Letter of Transmittal  and, if given or made,  such
information or representation  must not be relied upon as having been authorized
by GST Network,  GST USA, GST or the Exchange  Agent (as defined  herein).  This
Prospectus does not constitute an offer to sell or a solicitation of an offer to
buy the New Notes in any  jurisdiction  to any person to whom it is  unlawful to
make such offer or  solicitation  in such  jurisdiction.  The  delivery  of this
Prospectus shall not, under any  circumstances,  create any implication that the
information herein is correct at any time subsequent to its date.

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


<PAGE>



                                TABLE OF CONTENTS

                                                                         PAGE
                                                                         ----

AVAILABLE INFORMATION.......................................................1
INCORPORATION OF CERTAIN DOCUMENTS
    BY REFERENCE............................................................2
PROSPECTUS SUMMARY..........................................................4
RISK FACTORS...............................................................14
THE EXCHANGE OFFER.........................................................30
USE OF PROCEEDS............................................................36
SELECTED FINANCIAL DATA....................................................37
MANAGEMENT'S DISCUSSION AND
    ANALYSIS OF FINANCIAL CONDITION
    AND RESULTS OF OPERATIONS..............................................42
BUSINESS...................................................................57
CERTAIN RELATIONSHIPS AND RELATED
    TRANSACTIONS...........................................................72
DESCRIPTION OF THE NEW NOTES...............................................74
DESCRIPTION OF INDEBTEDNESS AND
 REDEEMABLE PREFERRED SHARES..............................................105
CERTAIN UNITED STATES FEDERAL
 INCOME TAX CONSIDERATIONS................................................111
CERTAIN CANADIAN TAX
 CONSIDERATIONS...........................................................115
PLAN OF DISTRIBUTION......................................................117
LEGAL MATTERS.............................................................118
EXPERTS...................................................................118
INDEX TO FINANCIAL STATEMENTS.............................................F-1

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

                              AVAILABLE INFORMATION

         GST  Network,  GST  USA  and GST  have  filed  with  the  Commission  a
Registration  Statement on Form S-4 under the Securities Act with respect to the
New Notes  offered in the  Exchange  Offer.  For the purposes  hereof,  the term
"Registration  Statement" means the original Registration  Statement and any and
all  amendments  thereto.  In accordance  with the rules and  regulations of the
Commission, this Prospectus does not contain all of the information set forth in
the  Registration  Statement  and  the  schedules  and  exhibits  thereto.  Each
statement made in this  Prospectus  concerning a document filed as an exhibit to
the  Registration  Statement  is  qualified in its entirety by reference to such
exhibit for a complete  statement  of its  provisions.  For further  information
pertaining  to GST  Network,  GST  USA,  GST and the New  Notes  offered  in the
Exchange Offer, reference is made to such Registration Statement,  including the
exhibits and schedules thereto and the financial statements, notes and schedules
filed as a part  thereof.  The  Registration  Statement  (and the  exhibits  and
schedules  thereto)  may  be  inspected  and  copied  at  the  public  reference
facilities  maintained by the  Commission  at its principal  office at Judiciary
Plaza,  450 Fifth Street,  N.W.,  Room 1024,  Washington,  D.C. 20549, or at its
regional offices at 500 West Madison Street, Suite 1400, Chicago, Illinois 60661
and at Seven  World Trade  Center,  Suite 1300,  New York,  New York 10048.  Any
interested  party may obtain  copies of all or any  portion of the  Registration
Statement and the exhibits thereto at prescribed rates from the Public Reference
Section of the Commission at its principal  office at Judiciary Plaza, 450 Fifth
Street, Room 1024, Washington, D.C. 20549. In addition,  registration statements
and  other  filings  made  with  the  Commission  through  its  Electronic  Data
Gathering,  Analysis  and  Retrieval  ("EDGAR")  system are  publicly  available
through  the  Commission's  site on the  Internet's  World Wide Web,  located at
http://www.sec.gov.

         GST  and GST USA  are,  and  upon  effectiveness  of this  Registration
Statement GST Network will be, subject to the informational  requirements of the
Securities  Exchange  Act of 1934,  as  amended  (the  "Exchange  Act"),  and in
accordance  therewith file or will file reports and other  information  with the
Commission.  Such reports and other  information  can be inspected and copied at
the public reference facilities maintained by the Commission at Judiciary Plaza,
450 Fifth Street, N.W.,  Washington,  D.C. 20549; 500 West Madison Street, Suite
1400, Chicago,


<PAGE>
Illinois  60661;  and Seven World Trade Center,  Suite 1300,  New York, New York
10048. Copies of such material can be obtained from the Public Reference Section
of the Commission at Judiciary Plaza, 450 Fifth Street, N.W.,  Washington,  D.C.
20549, at prescribed rates.

         The  Indenture  requires GST Network,  or GST USA if and when the Notes
are assumed, and GST to file with the Commission the annual, quarterly and other
reports required by Sections 13(a) and 15(d) of the Exchange Act,  regardless of
whether such Sections are applicable to GST Network, GST USA or GST. GST Network
or GST USA, as the case may be, and GST will supply  without cost to each Holder
of Notes,  and file with the Trustee under the Indenture,  copies of the audited
financial  statements,  quarterly  reports and other reports that GST Network or
GST USA, as the case may be, and GST are  required  to file with the  Commission
pursuant to Sections 13(a) and 15(d) of the Exchange Act.

                 INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

         GST's Transition  Report on Form 10-K for the period ended December 31,
1997,  Annual Report on Form 10-K for the fiscal year ended  September 30, 1997,
Quarterly  Report on Form 10-Q for the three month period ending March 31, 1998,
and the Current  Reports on Form 8-K dated June 15, 1998, May 4, 1998,  February
27, 1998 and January 6, 1998 are  incorporated  by reference in this  Prospectus
and shall be deemed to be a part hereof.

         GST USA's Transition  Report on Form 10-K for the period ended December
31,  1997,  as  amended,  Annual  Report on Form 10-K for the fiscal  year ended
September  30,  1997,  Quarterly  Report on Form 10-Q for the three months ended
March  31,  1998,  and the  Current  Reports  on Form 8-K  dated May 4, 1998 and
February 27, 1998 are  incorporated by reference in this Prospectus and shall be
deemed to be a part hereof.

         All subsequent reports filed by the Company on Forms 10-K, 10-Q, 8-K or
otherwise,  prior  to  the  termination  of  this  offering,  are  deemed  to be
incorporated  by reference in this  Prospectus  and shall be deemed to be a part
hereof from the date of filing of such documents.

         GST and GST USA  hereby  undertake  to provide  without  charge to each
person to whom a copy of this Prospectus has been  delivered,  on the written or
oral request of any such person, a copy of any or all of the documents  referred
to above which have been or may be incorporated in this Prospectus by reference,
other than exhibits to such documents.  Written  requests for such copies should
be directed to GST  Telecommunications,  Inc.  at 4001 Main  Street,  Vancouver,
Washington 98663,  Attention:  Chief Financial Officer.  Oral requests should be
directed to such individual (telephone number (360) 906-7100).

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

         No dealer,  salesman or other  person has been  authorized  to give any
information or to make any  representations  other than those  contained in this
Prospectus in connection with the offer made hereby, and, if given or made, such
information or representations must not be relied upon as having been authorized
by GST Network,  GST USA or GST. This Prospectus does not constitute an offer to
sell, or a solicitation of an offer to buy, the securities offered hereby to any
person in any state or other jurisdiction in which such offer or solicitation is
unlawful.  The  delivery  of this  Prospectus  at any time does not  imply  that
information contained herein is correct as of any time subsequent to its date.

THE EXCHANGE OFFER IS NOT BEING MADE TO, NOR WILL GST NETWORK ACCEPT  SURRENDERS
FOR  EXCHANGE  FROM,  HOLDERS  OF OLD  NOTES IN ANY  JURISDICTION  IN WHICH  THE
EXCHANGE  OFFER OR THE  ACCEPTANCE  THEREOF WOULD NOT BE IN COMPLIANCE  WITH THE
SECURITIES OR BLUE SKY LAWS OF SUCH JURISDICTION.

                                       -2-

<PAGE>
         THIS  PROSPECTUS  INCORPORATES  DOCUMENTS  BY  REFERENCE  THAT  ARE NOT
PRESENTED  HEREIN OR DELIVERED  HEREWITH.  THESE  DOCUMENTS ARE  AVAILABLE  UPON
REQUEST FROM GST  TELECOMMUNICATIONS,  INC. AT 4001 MAIN STREET,  VANCOUVER,  WA
98663,  ATTENTION:  CHIEF FINANCIAL OFFICER,  (360) 906-7100. IN ORDER TO ENSURE
TIMELY  DELIVERY  OF THE  DOCUMENTS,  ANY  REQUEST  SHOULD  BE MADE ON OR BEFORE
________,  1998  [FIVE  BUSINESS  DAYS  PRIOR  TO THE DATE ON  WHICH  THE  FINAL
INVESTMENT DECISION MUST BE MADE].

                                       -3-

<PAGE>
                               PROSPECTUS SUMMARY

         THE FOLLOWING SUMMARY IS QUALIFIED IN ITS ENTIRETY BY THE MORE DETAILED
INFORMATION  AND FINANCIAL  STATEMENTS,  INCLUDING THE NOTES THERETO,  APPEARING
ELSEWHERE IN THIS PROSPECTUS.  UNLESS THE CONTEXT OTHERWISE  REQUIRES,  THE TERM
"COMPANY"   MEANS  THE   CONSOLIDATED   BUSINESS   OPERATIONS  OF  GST  AND  ITS
SUBSIDIARIES,  INCLUDING GST USA AND GST NETWORK; THE TERMS "FISCAL" AND "FISCAL
YEAR" REFER TO THE COMPANY'S  FISCAL YEARS,  INCLUDING THE THIRTEEN MONTHS ENDED
SEPTEMBER 30, 1994  ("FISCAL  1994"),  THE FISCAL YEAR ENDED  SEPTEMBER 30, 1995
("FISCAL 1995"),  THE FISCAL YEAR ENDED SEPTEMBER 30, 1996 ("FISCAL 1996"),  THE
FISCAL YEAR ENDED  SEPTEMBER  30, 1997 ("FISCAL  1997"),  THE FISCAL YEAR ENDING
DECEMBER 31, 1998 ("FISCAL  1998") AND THE FISCAL YEAR ENDING  DECEMBER 31, 1999
("FISCAL  1999");  "1997 THREE MONTH  PERIOD"  REFERS TO THE THREE  MONTHS ENDED
DECEMBER 31, 1997 AND "1996 THREE MONTH PERIOD" REFERS TO THE THREE MONTHS ENDED
DECEMBER 31, 1996; AND, UNLESS  OTHERWISE  INDICATED,  ALL DOLLAR AMOUNTS ARE IN
U.S.  DOLLARS.  ALL FINANCIAL  STATEMENTS  HAVE BEEN PREPARED IN ACCORDANCE WITH
U.S. GENERALLY ACCEPTED  ACCOUNTING  PRINCIPLES.  INDUSTRY FIGURES WERE OBTAINED
FROM REPORTS PUBLISHED BY THE FEDERAL COMMUNICATIONS COMMISSION (THE "FCC"), THE
U.S. DEPARTMENT OF COMMERCE AND OTHER INDUSTRY SOURCES, ALL OF WHICH THE COMPANY
HAS NOT INDEPENDENTLY  VERIFIED.  AS USED IN THIS PROSPECTUS,  THE TERM "ISSUER"
MEANS GST  NETWORK  UNTIL  SUCH TIME AS GST USA MAY  BECOME  THE  OBLIGOR ON THE
NOTES,  AFTER  WHICH  THE  TERM  "ISSUER"  MEANS  GST USA.  CERTAIN  INFORMATION
CONTAINED  IN  THIS  SUMMARY  AND  ELSEWHERE  IN  THIS   PROSPECTUS,   INCLUDING
INFORMATION UNDER  "MANAGEMENT'S  DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
AND RESULTS OF OPERATIONS"  AND  INFORMATION  WITH REGARD TO THE COMPANY'S PLANS
AND  STRATEGY  FOR ITS  BUSINESS  AND  RELATED  FINANCING,  ARE  FORWARD-LOOKING
STATEMENTS.  SEE "RISK FACTORS" FOR A DISCUSSION OF IMPORTANT FACTORS THAT COULD
CAUSE ACTUAL RESULTS TO DIFFER MATERIALLY FROM THE FORWARD-LOOKING STATEMENTS.

                                   THE COMPANY

         The  Company  provides a broad range of  integrated  telecommunications
products and services,  primarily to business  customers  located in California,
Hawaii and other western continental  States. As a facilities-based  competitive
local exchange carrier ("CLEC"), the Company operates state-of-the-art,  digital
telecommunications  networks that represent an  alternative  to incumbent  local
exchange carriers ("ILECs").  The Company's full line of products, which offer a
"one-stop"   customer-focused   solution  to  the  telecommunications   services
requirements of its customers, include local dial tone, long distance, Internet,
data transmission and private line services.

         The Company's  digital networks  currently serve 40 markets in Arizona,
California,  Hawaii, Idaho, New Mexico, Texas and Washington.  In addition,  the
Company has networks under construction  which, when completed,  will expand its
regional  footprint to Oregon.  The Company's 14 high capacity  digital switches
enable it to  deliver  switched  local  services  and as of March  31,  1998 the
Company had sold over 76,000 access lines.

         The Company also  constructs,  markets and manages longhaul fiber optic
facilities in Arizona, California and Hawaii. The Company's longhaul fiber optic
facilities  currently extend over 900 route miles and approximately  1,700 route
miles are under construction and expected to become operational over the next 12
months.

         Management  believes  that  the  formation  of an  integrated  regional
network through the  interconnection of the Company's  individual  networks with
longhaul  fiber  optic  facilities  will  provide  significant  competitive  and
economic  advantages.  In  addition  to  providing  the  Company  with a  larger
addressable market, the interconnection of its networks is expected to allow the
Company  to carry a portion  of its  intra-regional  telecommunications  traffic
on-net,  thereby  improving  operating  margins by  reducing  payments  to other
carriers for use of their  facilities.  In addition,  increasing demand for high
bandwidth  capacity has created  opportunities  for the Company to sell or lease
capacity on its network to other communications carriers.

         The  Company  plans  to build  specific  network  segments  or to lease
capacity as economically  justified and as the demands of its customers warrant.
Management believes that pursuing this "smart-build"  approach should permit the
Company to provide for ongoing  capital  expenditures  on a "success  basis" and
allow the  Company to build its  customer  base  through an  increased  focus on
sales, marketing and operations support systems. "Smart builds" also provide the
Company  with the  ability  to  address  attractive  service  areas  selectively
throughout its targeted markets.

                                       -4-

<PAGE>
TELECOMMUNICATIONS SERVICES STRATEGY

         In conjunction with its network expansion,  the Company has developed a
strategy to leverage its existing facilities and  infrastructure,  customer base
and  experience  by  providing  a broad range of  integrated  telecommunications
services to meet the voice and data needs of its end-user customers. The Company
focuses   on   medium  to   large-sized   businesses   that   have   significant
telecommunications  requirements.  The Company,  through its  established  sales
channels, offers: (i) bundled telecommunications services; (ii) flexible pricing
and  customized  products and services;  and (iii) an enhanced level of customer
service.  To  meet  its  customers'  needs,  the  Company  offers  a  number  of
telecommunications services, including:

         LOCAL SERVICES. Where authorized,  the Company offers both switched and
dedicated local service. Dedicated local service involves a fixed communications
link,   usually   between   an   end-user   and  a   long   distance   carrier's
point-of-presence  ("POP").  With a switch,  it is  possible  for the Company to
direct  traffic to any  end-user  or long  distance  carrier  provided  that the
Company has an  interconnection  agreement  with the  connecting  carriers.  The
Company  plans to  continue  to  install  switching  equipment  in its  targeted
markets.  Once  a  switch  is  operational,   where  regulatory  conditions  and
interconnection agreements permit, the Company intends to offer local dial tone,
in addition to enhanced  services such as integrated  services  digital  network
("ISDN"), Centrex, voice mail and other custom calling features.

         LONG  DISTANCE  SERVICES.  The Company  offers basic and enhanced  long
distance  services,  such as toll free,  and calling  card  services,  targeting
primarily business customers purchasing between $200 and $15,000 of services per
month as well as resellers and other carriers.  Currently,  the Company provides
these services by reselling the services of certain major long distance carriers
and intends to carry an increasing  portion of this traffic over its own network
facilities.  In April  1998,  the Company  acquired  ICON  Communications  Corp.
("ICON"), a switch-based reseller of long distance and local services located in
Seattle, Washington, for approximately $23.8 million in cash. In March 1998, the
Company    acquired   KLP,   Inc.    (d/b/a   Call    America-Phoenix)    ("Call
America-Phoenix"),  a reseller  of long  distance  service  located in  Phoenix,
Arizona, for approximately $3.8 million in cash.

         DATA SERVICES.  The Company  offers  national and  international  frame
relay  services  on its own frame  relay  network  and  through  interconnection
agreements  with other data  service  providers.  Under  these  agreements,  the
Company and such data service  providers have agreed to link their data networks
and  terminate  one  another's  traffic.  The Company has  deployed  frame relay
switches in 21 markets in the western United  States.  Such switches can provide
both frame  relay and  Internet  services.  The Company  offers data  networking
services such as asynchronous transfer mode ("ATM"), high speed LAN connectivity
service, frame relay and high capacity access to the Internet and plans to offer
video conferencing and multi-media networking in the future. The Company has one
ATM  switch  commercially  operational  in  each  of Los  Angeles  and  Ontario,
California.

         INTERNET  SERVICES.  The  Company  presently  offers   Internet-related
services in most of its markets,  such as dedicated  Internet  access,  Web site
development and hosting,  provides local exchange service and upstream transport
for local Internet Service Providers  ("ISPs") and electronic  commerce services
and is in the process of developing various Internet software applications.  The
Company also offers dial-up  Internet access to customers in Portland  (Oregon),
Vancouver  (Washington),  the State of Hawaii and select  markets in California,
including San Francisco,  and intends to begin offering such services in the Los
Angeles  and  Houston  metropolitan  areas in 1998.  In March  1998 the  Company
acquired  the  business of Whole Earth  Networks,  LLC  ("Whole  Earth"),  a San
Francisco-based full-service ISP, for approximately $9.0 million in cash and the
assumption of certain liabilities.

RECENT DEVELOPMENTS

         In February  1998,  the Company sold its remaining 63% interest in NACT
Telecommunications,  Inc.  ("NACT")  for net  proceeds  of  approximately  $85.0
million (the "NACT Sale"). NACT produces advanced  telecommunications  switching
platforms  with  integrated  applications  software  and network  telemanagement
capabilities.

         In May 1998, GST Network sold $500,000,000 principal amount at maturity
of the Old Notes in the May  Offering.  The net  proceeds of the May Offering of
approximately   $288.9  million  will  be  used  to  finance  the  purchase  and
installation of Acquired Equipment.  Until such time as purchases are made, such
net proceeds have been invested in United States government  securities in which
the holders of the Notes have been granted a first priority  security  interest.
See "Description of the New Notes."

                                       -5-

<PAGE>
         On June 15, 1998 the Company  announced  that John Warta had retired as
Chairman of the Board and Chief  Executive  Officer of the  Company.  Mr.  Warta
remains a director of the  Company.  The Board of  Directors  of the Company has
appointed  Robert  Ferchat,  a director of the  Company and the  Chairman of the
Board and Chief  Executive  Officer of BCE Mobile  Communications,  Inc.  to the
position of Chairman of the Board of the  Company and Joseph  Basile,  Jr.,  the
President,  Chief  Operating  Officer and a director of the  Company,  as acting
Chief Executive Officer.

FINANCING PLAN

         The Company plans capital  expenditures of approximately $325.0 million
and $300.0 million for Fiscal 1998 and Fiscal 1999,  respectively.  The majority
of these  expenditures  will be made to  continue to fund the  expansion  of the
Company's   infrastructure,   including  the  development  and  construction  of
additional  networks and longhaul  fiber optic  facilities  and the purchase and
installation of switches and related  equipment.  The Company  believes that the
cash on hand,  including the proceeds  from the May Offering  (which may be used
solely for the purchase and installation of Acquired Equipment) will provide the
Company with sufficient funds to expand its business as presently planned and to
fund its  operating  expenses  through  October  1999.  Thereafter,  the Company
expects to require  additional  financing.  The extent of  additional  financing
required will depend upon the rate of the Company's expansion and the success of
its  business.  There can be no  assurance  that  additional  financing  will be
available to the Company,  or if available that it can be obtained on acceptable
terms or within the limitations contained in the Company's financing agreements.
See "Risk  Factors--Significant  Capital  Requirements,"  "Use of Proceeds," and
"Management's  Discussion  and  Analysis of Financial  Condition  and Results of
Operations--Liquidity and Capital Resources."



                                       -6-

<PAGE>
                   SUMMARY OF THE TERMS OF THE EXCHANGE OFFER

The Exchange Offer..................  Pursuant to the Exchange Offer,  New Notes
                                      will be issued in exchange for outstanding
                                      Old  Notes   validly   tendered   and  not
                                      withdrawn.  The Accreted  Value of the New
                                      Notes  will  be  equal  to that of the Old
                                      Notes  and New  Notes  will be  issued  in
                                      denominations   of  $1,000  in   principal
                                      amount  at  maturity   and  any   integral
                                      multiple of $1,000 in excess thereof.  GST
                                      Network  will issue New Notes to tendering
                                      Holders  of  Old  Notes  as   promptly  as
                                      practicable after the Expiration Date.

Resale   ..........................   Based upon an  interpretation by the staff
                                      of the  Commission  set forth in no-action
                                      letters  issued  to  third  parties,   GST
                                      Network believes that the New Notes issued
                                      pursuant to the Exchange Offer in exchange
                                      for Old Notes may be offered  for  resale,
                                      resold and  otherwise  transferred  by any
                                      Holder thereof (other than broker-dealers,
                                      as set forth  below,  and any such  Holder
                                      that is an "affiliate," within the meaning
                                      of Rule 405 under the  Securities  Act, of
                                      GST  Network,  GST  USA  or  GST)  without
                                      compliance  with  the   registration   and
                                      prospectus   delivery  provisions  of  the
                                      Securities  Act,  provided  that  such New
                                      Notes are acquired in the ordinary  course
                                      of such  Holder's  business  and that such
                                      Holder has no arrangement or understanding
                                      with  any  person  to  participate  in the
                                      distribution  of  such  New  Notes.   Each
                                      broker-dealer  (other than an affiliate of
                                      GST Network, GST USA or GST) that receives
                                      New Notes for its own  account in exchange
                                      for Old  Notes  that  were  acquired  as a
                                      result of  market-making  or other trading
                                      activity  must  acknowledge  that  it will
                                      deliver a prospectus  in  connection  with
                                      any resale of such New  Notes.  The Letter
                                      of   Transmittal   states   that   by   so
                                      acknowledging and delivering a prospectus,
                                      such  broker-dealer  will not be deemed to
                                      admit that it is an  "underwriter"  within
                                      the meaning of the  Securities  Act.  This
                                      Prospectus,   as  it  may  be  amended  or
                                      supplemented  from  time to  time,  may be
                                      used by such  broker-dealer  in connection
                                      with  resales  of New  Notes  received  in
                                      exchange  for Old  Notes  where  such  New
                                      Notes were acquired by such  broker-dealer
                                      as a result of market-making activities or
                                      other trading activities.  GST Network has
                                      agreed  that,  for a  period  of 180  days
                                      after the  Expiration  Date,  it will make
                                      this  Prospectus  available  to  any  such
                                      broker-dealer  for use in connection  with
                                      any   such    resale.    See    "Plan   of
                                      Distribution."  Any Holder who  tenders in
                                      the Exchange  Offer with the  intention to
                                      participate,   or  for  the   purpose   of
                                      participating,  in a  distribution  of the
                                      New  Notes or who is an  affiliate  of GST
                                      Network,  GST USA or GST  may not  rely on
                                      the   position   of  the   staff   of  the
                                      Commission  enunciated  in  EXXON  CAPITAL
                                      HOLDINGS  CORPORATION  (available  May 13,
                                      1988),  MORGAN STANLEY & CO.  INCORPORATED
                                      (available  June 5,  1991) and  SHEARMAN &
                                      STERLING  (available July 2, 1993) and, in
                                      the  absence  of an  exemption  therefrom,
                                      must  comply  with  the  registration  and
                                      prospectus  delivery  requirements  of the
                                      Securities   Act  in  connection   with  a
                                      secondary resale  transaction.  Failure to
                                      comply  with  such  requirements  in  such
                                      instance   may   result  in  such   Holder
                                      incurring liabilities under

                                       -7-

<PAGE>
                                      the Securities Act for which the Holder is
                                      not indemnified by GST Network, GST USA or
                                      GST.

                                      The  Exchange  Offer is not being made to,
                                      nor will GST Network accept surrenders for
                                      exchange from, Holders of Old Notes in any
                                      jurisdiction  in which this Exchange Offer
                                      or the acceptance  thereof would not be in
                                      compliance with the securities or blue sky
                                      laws of such jurisdiction.

Expiration Date...................    5:00 p.m.,  New York City time, on _______
                                      __,   1998   [20   BUSINESS   DAYS   AFTER
                                      COMMENCEMENT   OF  THE  EXCHANGE   OFFER],
                                      unless the Exchange Offer is extended,  in
                                      which  case  the  term  "Expiration  Date"
                                      means  the  latest  date and time to which
                                      the  Exchange   Offer  is  extended.   Any
                                      extension,   if  made,  will  be  publicly
                                      announced  through  a  release  to the Dow
                                      Jones  News   Service  and  as   otherwise
                                      required by applicable law or regulations.

Conditions to the
  Exchange Offer.................     The  Exchange  Offer is subject to certain
                                      conditions,  which  may be  waived  by GST
                                      Network.   See  "The  Exchange   Offer  --
                                      Conditions  to the  Exchange  Offer."  The
                                      Exchange Offer is not conditioned upon any
                                      minimum  principal  amount at  maturity of
                                      Old Notes being tendered.

Procedures for Tendering Old
 Notes............................    Each Holder of Old Notes wishing to accept
                                      the Exchange Offer must complete, sign and
                                      date  the  Letter  of  Transmittal,  or  a
                                      facsimile thereof,  in accordance with the
                                      instructions contained herein and therein,
                                      and mail or  otherwise  deliver the Letter
                                      of  Transmittal,  or a facsimile  thereof,
                                      together   with   the  Old   Notes  to  be
                                      exchanged    and   any   other    required
                                      documentation   to  United   States  Trust
                                      Company of New York, as Exchange Agent, at
                                      the address set forth  herein and therein.
                                      By executing a Letter of Transmittal, each
                                      Holder will represent to GST Network,  GST
                                      USA and GST that, among other things,  the
                                      New  Notes   acquired   pursuant   to  the
                                      Exchange  Offer are being  obtained in the
                                      ordinary  course of business of the person
                                      receiving  such New Notes,  whether or not
                                      such  person is the Holder,  that  neither
                                      the Holder  nor any such other  person has
                                      any arrangement or understanding  with any
                                      person to participate in the  distribution
                                      of such New  Notes  and that  neither  the
                                      Holder  nor any such  other  person  is an
                                      "affiliate,"  as defined in Rule 405 under
                                      the  Securities  Act, of GST Network,  GST
                                      USA or GST.

Special Procedures for
  Beneficial Owners...............    Any  beneficial  owner whose Old Notes are
                                      registered   in  the  name  of  a  broker,
                                      dealer,  commercial bank, trust company or
                                      other  nominee and who wishes to tender in
                                      the  Exchange  Offer  should  contact such
                                      registered  Holder  promptly  and instruct
                                      such  registered  Holder to tender on such
                                      beneficial   owner's   behalf.   If   such
                                      beneficial  owner  wishes to tender on his
                                      own behalf,  such  beneficial  owner must,
                                      prior  to  completing  and  executing  the
                                      Letter of  Transmittal  and delivering his
                                      Old   Notes,   either   make   appropriate
                                      arrangements to register  ownership of the
                                      Old Notes in such

                                       -8-

<PAGE>
                                      owner's   name  or   obtain   a   properly
                                      completed  bond power from the  registered
                                      Holder.   The   transfer   of   registered
                                      ownership may take  considerable  time and
                                      may not be able to be  completed  prior to
                                      the Expiration Date.

Guaranteed Delivery Procedures......  Holders  of Old  Notes  who wish to tender
                                      such Old Notes and whose Old Notes are not
                                      immediately   available   or  who   cannot
                                      deliver  their Old  Notes  and a  properly
                                      completed  Letter  of  Transmittal  or any
                                      other documents  required by the Letter of
                                      Transmittal to the Exchange Agent prior to
                                      the  Expiration  Date may tender their Old
                                      Notes according to the guaranteed delivery
                                      procedures  set  forth  in  "The  Exchange
                                      Offer -- Procedures for Tendering."

Acceptance of Old Notes and
  Delivery of New Notes............   Subject   to   certain    conditions   (as
                                      described  more  fully  in  "The  Exchange
                                      Offer  --   Conditions   to  the  Exchange
                                      Offer"),   GST  Network  will  accept  for
                                      exchange  any and all Old  Notes  that are
                                      properly  tendered in the  Exchange  Offer
                                      and not withdrawn, prior to 5:00 p.m., New
                                      York City time,  on the  Expiration  Date.
                                      The  New  Notes  issued  pursuant  to  the
                                      Exchange   Offer  will  be   delivered  as
                                      promptly  as  practicable   following  the
                                      Expiration Date.

Withdrawal Rights................     Subject  to  the   conditions   set  forth
                                      herein,   tenders  of  Old  Notes  may  be
                                      withdrawn  at any time prior to 5:00 p.m.,
                                      New  York  City  time,  on the  Expiration
                                      Date.   See   "The   Exchange   Offer   --
                                      Withdrawal of Tenders."

Certain United States
  Federal Income Tax
  Considerations.................     The  exchange  pursuant  to  the  Exchange
                                      Offer  should  not  constitute  a  taxable
                                      exchange for United States  federal income
                                      tax  purposes.  Each  New Note  should  be
                                      treated as having been  originally  issued
                                      at  the  time   the  Old  Note   exchanged
                                      therefor  was   originally   issued.   See
                                      "Certain  United States Federal Income Tax
                                      Considerations."

Exchange Agent...................     United  States Trust  Company of New York,
                                      the  Trustee  under  the   Indenture,   is
                                      serving as exchange  agent (the  "Exchange
                                      Agent") in  connection  with the  Exchange
                                      Offer. For information with respect to the
                                      Exchange Offer,  the telephone  number for
                                      the Exchange  Agent is (800)  548-6565 and
                                      the  facsimile  number  for  the  Exchange
                                      Agent is (212) 780-0592.


SEE "THE EXCHANGE OFFER" FOR MORE DETAILED  INFORMATION  CONCERNING THE TERMS OF
THE EXCHANGE OFFER.

                                       -9-

<PAGE>
                      SUMMARY DESCRIPTION OF THE NEW NOTES

         The Exchange Offer applies to $302.3 million  aggregate  Accreted Value
of Old Notes as of May 31, 1998. The form and terms of the New Notes will be the
same in all  material  respects  as the form and terms of the Old Notes,  except
that the offer and sale of the New Notes will be registered under the Securities
Act and, therefore, the New Notes will not bear legends restricting the transfer
thereof.  Upon  consummation  of the Exchange  Offer,  none of the Notes will be
entitled to registration rights under the Registration Rights Agreement. The New
Notes will  evidence  the same debt as the Old Notes,  will be  entitled  to the
benefits of the Indenture and will be treated as a single class  thereunder with
any Old Notes that remain outstanding. See "Description of the New Notes."

Issuer   .....................     GST    Network.    The    Notes    will    be
                                   unconditionally  and  irrevocably  assumed by
                                   GST USA  and  guaranteed  by  GST,  on May 1,
                                   2003, or earlier if permitted under the terms
                                   of   GST   USA's   and   GST's    outstanding
                                   indebtedness.   See  "Risk  Factors--Possible
                                   Inability  of  GST  USA  to  Assume,  GST  to
                                   Guarantee  and  GST  Network  to  Redeem  the
                                   Notes"   and    "Description   of   the   New
                                   Notes--Structure and Security."

Securities Offered............     $302.3 million aggregate Accreted Value of 10
                                   1/2% Senior Secured  Discount  Exchange Notes
                                   due 2008 as of May 31, 1998.

Maturity .....................     May 1, 2008.

Yield and Interest............     The Old  Notes  were  sold  at a  substantial
                                   discount  from  their  principal   amount  at
                                   maturity,  and there will not be any  payment
                                   of interest on the Notes prior to November 1,
                                   2003.  For a discussion of the federal income
                                   tax treatment of the Notes under the original
                                   issue  discount  rules,  see "Certain  United
                                   States  Federal  Income Tax  Considerations."
                                   The Notes will fully accrete to face value on
                                   May 1, 2003.  From and after May 1, 2003, the
                                   Notes  will  bear  interest,  which  will  be
                                   payable  in  cash,  at a rate of 10 1/2%  per
                                   annum   on  each  May  1  and   November   1,
                                   commencing November 1, 2003.

Security.....................      The  New  Notes  will  be  identical  in  all
                                   material  respects  to the forms and terms of
                                   the  corresponding  Old Notes.  The Indenture
                                   provides  that as of the  Closing  Date,  GST
                                   Network  must use all of the net  proceeds of
                                   the  May   Offering   to   purchase   Pledged
                                   Securities and pledge the Pledged  Securities
                                   to the Trustee for the benefit of the holders
                                   of the Notes. In addition,  as of the Closing
                                   Date, in consideration for GST Network making
                                   the  financing   through  this  May  Offering
                                   available  to GST USA  and  for  GST  Network
                                   facilitating   the   purchase  of  GST  USA's
                                   equipment,  GST USA has  agreed to  reimburse
                                   GST Network for any fees or expenses incurred
                                   by GST Network in connection therewith and to
                                   pay GST Network a commitment fee in an amount
                                   equal to 4.5%  per  annum  of the  amount  by
                                   which  the  aggregate   principal  amount  at
                                   maturity of the Notes  exceeds the  aggregate
                                   principal  amount of all  Intercompany  Notes
                                   then held as  security  for the  Notes.  Such
                                   commitment fee shall be paid semiannually, in
                                   arrears,  on  each  May  1  and  November  1,
                                   commencing  November  1,  1998,  by  GST  USA
                                   issuing to GST Network  Fee Notes  guaranteed
                                   by GST.  The Notes will be secured by a first
                                   priority  security  interest  in the  Pledged
                                   Securities,  the Pledge  Account  and the Fee
                                   Notes.

                                   GST Network has used the net  proceeds of the
                                   May Offering to purchase  Pledged  Securities
                                   which,  upon written request from GST Network
                                   to the  Trustee,  will be  released  from the
                                   Pledge  Account in order to finance  the cost
                                   (including,  without limitation,  the cost of
                                   design,      development,       construction,
                                   acquisition,  installation or integration) of
                                   Acquired  Equipment (the "Acquired  Equipment
                                   Cost");  provided  that the  cost of  design,
                                   development,  construction,  installation and
                                   integration of the Acquired  Equipment  shall
                                   not exceed 50% of

                                      -10-

<PAGE>
                                   the  aggregate   Acquired   Equipment   Cost.
                                   Immediately   upon  the  acquisition  of  any
                                   Acquired Equipment,  GST Network must grant a
                                   first  priority  security  interest  in  such
                                   Acquired  Equipment  to the  Trustee  for the
                                   benefit of the holders of the Notes.  GST USA
                                   will purchase the Acquired Equipment from GST
                                   Network for an amount  equal to the  Acquired
                                   Equipment   Cost  and  will  issue  a  senior
                                   secured  promissory note guaranteed by GST in
                                   an  amount  equal to the  Acquired  Equipment
                                   Cost payable to GST Network (an "Intercompany
                                   Note"). Each Intercompany Note will mature on
                                   May 1, 2003.  GST Network  will grant a first
                                   priority    security    interest    in    all
                                   Intercompany  Notes  to the  Trustee  for the
                                   benefit  of the  holders  of the  Notes.  The
                                   Trustee  and the holders of the Notes will be
                                   entitled to foreclose upon the Fee Notes, the
                                   Intercompany Notes and the Acquired Equipment
                                   upon the  occurrence  of an Event of  Default
                                   under      the      Notes.      See     "Risk
                                   Factors--Insufficiency  of Acquired Equipment
                                   to Satisfy the Notes upon Liquidation."

Optional Redemption................The Notes are redeemable at the option of GST
                                   USA, in whole or in part, at any time or from
                                   time  to  time,  on or  after  May  1,  2003,
                                   initially  at  105.250%  of  their  principal
                                   amount at  maturity,  plus accrued and unpaid
                                   interest,  declining ratably to 100% of their
                                   principal  amount at  maturity,  plus accrued
                                   and unpaid  interest on or after May 1, 2006.
                                   See   "Description  of  the   Notes--Optional
                                   Redemption."

Mandatory Redemption...............If on May 1,  2003 GST USA is  prohibited  by
                                   the terms of any indebtedness  outstanding on
                                   the  Closing  Date from  assuming  all of the
                                   Notes, GST Network will redeem, upon not less
                                   than 10 nor more  than 30 days'  notice,  the
                                   portion of the Notes that  cannot be assumed,
                                   at  105.250%  of their  principal  amount  at
                                   maturity plus accrued and unpaid  interest to
                                   the  date  of  redemption.  There  can  be no
                                   assurance   that  GST   Network   will   have
                                   sufficient funds to make such redemption. See
                                   "Risk Factors--Possible  Inability of GST USA
                                   to Assume,  GST to Guarantee  and GST Network
                                   to Redeem the Notes."

Additional Amounts.................Any payments in respect of the Fee Notes, the
                                   Intercompany Notes, or after May 1, 2003, the
                                   Notes,  made  by GST  will  be  made  without
                                   withholding  or deduction for Canadian  taxes
                                   except   as    required   by   law   or   the
                                   interpretation or administration  thereof, in
                                   which  case  GST  will  pay  such  additional
                                   amounts as may be  necessary  so that the net
                                   amount received by GST Network or the holders
                                   of the Notes,  as the case may be, after such
                                   withholding  or  deduction  will  not be less
                                   than the amount that would have been received
                                   in  the  absence  of  such   withholding   or
                                   deduction.   See   "Description  of  the  New
                                   Notes--Additional Amounts."

Redemption for
  Changes in Canadian
  Withholding Taxes................After GST USA has become  the  obligor on the
                                   Notes,  in the  event  that,  as a result  of
                                   certain    changes     affecting     Canadian
                                   withholding  taxes, GST becomes  obligated to
                                   pay additional amounts in accordance with the
                                   Indenture, the Notes will be redeemable, as a
                                   whole but not in part,  at the  option of GST
                                   at any time at 100% of their principal amount
                                   plus accrued  interest.  See  "Description of
                                   the New Notes--Optional Redemption."

Change of Control..................Upon a Change of Control  (as  defined in the
                                   Indenture),  GST  Network or GST USA,  as the
                                   case  may  be,  will be  required  to make an
                                   offer to  purchase  the  Notes at a  purchase
                                   price equal to 101% of their  Accreted  Value
                                   on  the  date  of   purchase   plus   accrued
                                   interest.  There can be no assurance that GST
                                   Network or GST USA will have sufficient funds
                                   available  at  the  time  of  any  Change  of
                                   Control  to make any  required  debt  payment
                                   (including repurchases of the Notes).

                                      -11-

<PAGE>
                                   See "Description of the New Notes--Repurchase
                                   of Notes upon a Change of Control."

Ranking  ..................        The Notes are secured, senior indebtedness of
                                   GST  Network  and,  once  assumed by GST USA,
                                   will be secured,  senior  indebtedness of GST
                                   USA.  The  Note   Guarantee  will  be  senior
                                   unsecured  indebtedness  of GST.  As of March
                                   31,   1998,   GST  had   $796.9   million  of
                                   indebtedness outstanding,  GST USA had $623.1
                                   million of  indebtedness  outstanding and GST
                                   Network  had no  indebtedness.  After GST USA
                                   assumes  the  Notes,  the  Notes and the Note
                                   Guarantee will be effectively subordinated to
                                   all  liabilities  of GST USA's  subsidiaries,
                                   including  trade  payables.  As of March  31,
                                   1998, the  subsidiaries of GST USA other than
                                   GST Network had approximately  $442.2 million
                                   of   liabilities   (excluding    intercompany
                                   payables),   including   $401.0   million  of
                                   indebtedness.  See "Risk Factors--Substantial
                                   Indebtedness,"   "--Possible   Inability   to
                                   Service     Debt;     Refinancing     Risks,"
                                   "--Structure of GST Network, GST USA and GST;
                                   Secured  Indebtedness;  Ranking of Notes" and
                                   "Description  of  Certain   Indebtedness  and
                                   Redeemable Preferred Shares."

Certain Covenants..................The  Indenture   contains  certain  covenants
                                   which,  among  other  things,   prohibit  GST
                                   Network from incurring any indebtedness other
                                   than the  Notes and from  creating  any liens
                                   other  than  liens  for  the  benefit  of the
                                   holders  of  the  Notes.  In  addition,   the
                                   Indenture  restricts  the  ability of GST and
                                   its  Restricted  Subsidiaries  (including GST
                                   USA)  to:  incur   additional   indebtedness;
                                   create   liens;   engage  in   sale-leaseback
                                   transactions;    pay    dividends   or   make
                                   distributions  in  respect  of their  capital
                                   stock; make investments or make certain other
                                   restricted  payments;   sell  assets;  create
                                   restrictions  on the  ability  of  Restricted
                                   Subsidiaries to make certain payments;  issue
                                   or   sell   capital   stock   of   Restricted
                                   Subsidiaries;  enter into  transactions  with
                                   shareholders or affiliates;  and consolidate,
                                   merge  or sell  all or  substantially  all of
                                   their  assets.  See  "Description  of the New
                                   Notes--Covenants."

Conditional Guarantee..............If and when the Notes are assumed by GST USA,
                                   GST USA's obligations under the Notes will be
                                   fully and  unconditionally  guaranteed  on an
                                   unsubordinated  basis  by GST.  However,  the
                                   Note  Guarantee   shall  not  be  enforceable
                                   against GST in an amount in excess of the net
                                   worth of GST at the time  that  determination
                                   of such net worth is, under  applicable  law,
                                   relevant to the  enforceability  of such Note
                                   Guarantee.  Such net worth shall  include any
                                   claim   of   GST    against   GST   USA   for
                                   reimbursement and any claim against any other
                                   guarantor for contribution.

Settlement at DTC..................Transfers of Notes  between  participants  in
                                   The Depository  Trust Company ("DTC") will be
                                   effected in the  ordinary  way in  accordance
                                   with  DTC  rules  and  will  be   settled  in
                                   next-day funds.

Book-Entry;
  Delivery and
  Form   ..........................Notes sold in  reliance  on Rule 144A will be
                                   represented by one or more  permanent  global
                                   Notes in definitive,  fully  registered form,
                                   deposited  with the Trustee as custodian for,
                                   and  registered  in the name of a nominee of,
                                   DTC. Notes sold in offshore  transactions  in
                                   reliance on  Regulation  S initially  will be
                                   represented by one or more  temporary  global
                                   Notes in definitive,  fully  registered form,
                                   deposited  with the Trustee as custodian for,
                                   and  registered  in the name of a nominee of,
                                   DTC for the accounts of  Euroclear  and Cedel
                                   Bank.  The  temporary  global  Notes  will be
                                   exchangeable  for  permanent  global Notes 40
                                   days    after   the    Closing    Date   upon
                                   certification  that the beneficial  interests
                                   in such  global  Notes are owned by  non-U.S.
                                   persons.  Institutional  Accredited Investors
                                   that are not Qualified  Institutional  Buyers
                                   will receive certificates for the Notes

                                      -12-

<PAGE>
                                   owned by them,  which  cannot  then be traded
                                   through  the  facilities  of DTC,  except  in
                                   connection  with a  transfer  to a  Qualified
                                   Institutional Buyer or a transfer pursuant to
                                   Regulation  S.  See  "Description  of the New
                                   Notes-- Book-Entry; Delivery and Form."

                                  RISK FACTORS

         See "Risk  Factors"  beginning at page 14 for a  discussion  of certain
factors relating to an investment in the Notes,  including risks relating to the
Company's historical and anticipated operating losses and negative EBITDA.


                                      -13-

<PAGE>
                                  RISK FACTORS

         AN  INVESTMENT IN THE NOTES  OFFERED  HEREBY  INVOLVES A HIGH DEGREE OF
RISK. THE FOLLOWING RISK FACTORS,  TOGETHER WITH THE OTHER INFORMATION SET FORTH
IN THIS  PROSPECTUS,  SHOULD BE CONSIDERED  WHEN EVALUATING AN INVESTMENT IN THE
NOTES.

HISTORICAL AND ANTICIPATED FUTURE OPERATING LOSSES AND NEGATIVE EBITDA

         The Company has  incurred  and expects to continue to incur  increasing
operating  losses and  negative  EBITDA while it expands its business and builds
its customer  base. The Company has incurred  significant  increases in expenses
associated with these  activities and there can be no assurance that an adequate
customer  base with  respect to any or all of its  services  will be achieved or
sustained. The Company does not expect to achieve a significant market share for
any of its services.  The Company had net income of approximately $19.5 million,
an operating loss of  approximately  $24.8 million and negative  EBITDA of $14.8
million for the three months  ended March 31, 1998, a net loss of  approximately
$39.6  million,  an operating loss of  approximately  $21.9 million and negative
EBITDA  of $12.0  million  for the 1997  Three  Month  Period  and a net loss of
approximately  $113.3 million,  an operating loss of approximately $86.5 million
and negative EBITDA of $51.9 million for Fiscal 1997.  There can be no assurance
that the Company  will  achieve or sustain  profitability  or generate  positive
EBITDA.  In February 1998, the Company  consummated the NACT Sale,  yielding net
proceeds of  approximately  $85.0 million.  Without NACT, the Company would have
had a net loss of $40.4  million and  negative  EBITDA of $14.4  million for the
1997 Three Month Period and a net loss of $117.8 million and negative  EBITDA of
$59.0 million for Fiscal 1997.  EBITDA consists of loss before interest,  income
taxes,  depreciation and  amortization  and other income and non-cash  expenses.
EBITDA   is   provided   because   it  is  a  measure   commonly   used  in  the
telecommunications  industry. It is presented to enhance an understanding of the
Company's  operating  results  and is not  intended  to  represent  cash flow or
results  of  operations  in  accordance  with  generally   accepted   accounting
principles  for  the  periods  indicated.  See  "Selected  Financial  Data"  and
"Management's  Discussion  and  Analysis of Financial  Condition  and Results of
Operations."

         At  December  31,  1997,  the  Company had a U.S.  net  operating  loss
carryforward of  approximately  $130.4 million and a Canadian net operating loss
carryforward of approximately Cdn. $11.1 million.  While such loss carryforwards
are available to offset future taxable  income of the Company,  the Company does
not expect to  generate  sufficient  taxable  income so as to  utilize  all or a
substantial  portion  of such  loss  carryforwards  prior to  their  expiration.
Further,  the  utilization  of net operating loss  carryforwards  against future
taxable income is subject to limitation if the Company experiences an "ownership
change" as  defined in Section  382 of the  Internal  Revenue  Code of 1986,  as
amended (the "Code"), and the analogous provision of the Income Tax Act (Canada)
(the "Canada Act").

DEVELOPMENT AND EXPANSION RISK AND POSSIBLE INABILITY TO MANAGE GROWTH

         The Company is in the early  stages of its  operations.  Certain of its
networks have only recently become commercially  operational and the Company has
only  recently  begun to deploy  switches  in its  networks.  The success of the
Company will depend,  among other things,  upon the Company's  ability to "smart
build" and assess potential  markets,  design fiber backbone routes that provide
ready access to a substantial  customer base, secure financing,  obtain required
rights-of-way,  building access and  governmental  permits,  implement  expanded
interconnection  and  collocation  with  facilities  owned by  ILECs,  achieve a
sufficient  customer  base,  service  customers it has targeted using its "smart
build"  approach,  and  upon  subsequent   developments  in  state  and  federal
regulations.  The Company has begun to target Tier 1 cities and  competition  in
such markets is expected to be significantly greater than in the Tier 2 and Tier
3 cities in which the Company is currently operating.  There can be no assurance
that any  networks to be  developed  or further  developed  will be completed on
schedule,   at  a   commercially   reasonable   cost  or  within  the  Company's
specifications.  In  addition,  the  expansion  of the  Company's  business  has
involved and is expected to continue to involve acquisitions, which could divert
the resources and management  time of the Company and require  integration  with
the Company's existing  operations.  There can be no assurance that any acquired
business will be successfully  integrated into the Company's  operations or that
any such  business will meet the Company's  expectations.  The Company's  future
performance  will  depend,  in part,  upon its  ability  to  manage  its  growth
effectively,  which will  require it to  continue to  implement  and improve its
operating,  financial and accounting  systems,  to expand,  train and manage its
employee base and to effectively manage the integration of acquired  businesses.
These factors and others could  adversely  affect the expansion of the Company's
customer base and

                                      -14-
<PAGE>
service offerings.  The Company's  inability either to expand in accordance with
its plans or to manage its growth  could have a material  adverse  effect on its
business, financial condition and results of operations. See "Business."

SIGNIFICANT CAPITAL REQUIREMENTS

         The  Company   estimates   that  its  capital   expenditures   will  be
approximately  $325.0  million in Fiscal 1998 and $300.0 million in Fiscal 1999.
The Company believes that the proceeds of the May Offering and its cash on hand,
including the remaining  proceeds from the NACT Sale,  the public  offering (the
"1997 Public  Offering") of 6,440,000  common  shares,  without par value of GST
(the "Common Shares") at $12 per share and $144.0 million principal amount of 12
3/4% Senior Subordinated  Accrual Notes due 2007 (the "Accrual Notes"), the sale
(the "Secured Notes Offering") by GST Equipment Funding of $265.0 million of its
13 1/4% Senior Secured Notes due 2007 (the "Secured  Notes") (which,  other than
the amount pledged to fund the first six interest payments on the Secured Notes,
is being used to purchase  equipment)  and  borrowings  expected to be available
under a credit  facility (the "Tomen  Facility") with Tomen America Inc. and its
affiliates  ("Tomen") and an equipment  financing agreement with Siemens Telecom
Networks  ("Siemens"),  will provide  sufficient funds for the Company to expand
its business as presently  planned and to fund its  operating  expenses  through
October 1999.  Thereafter,  the Company expects to require additional financing.
In the  event  that the  Company's  plans or  assumptions  change or prove to be
inaccurate,  or the foregoing  sources of funds prove to be insufficient to fund
the Company's growth and operations, or if the Company consummates acquisitions,
the  Company  may be required  to seek  additional  capital (or seek  additional
capital  sooner than  currently  anticipated).  Sources of financing may include
public or private debt or equity  financing by the Company or its  subsidiaries,
sales of assets or other financing arrangements.  There can be no assurance that
additional financing would be available to the Company,  or, if available,  that
it could be obtained on acceptable terms or within the limitations  contained in
the Company's  financing  arrangements.  Failure to obtain such financing  could
result in the delay or abandonment  of some or all of the Company's  development
and expansion plans and expenditures and could have a material adverse effect on
the Company.  Such  failure  could also limit the ability of the Company to make
principal and interest payments on its outstanding  indebtedness,  including the
Notes.  The Company has no material  working  capital or other  credit  facility
under  which it may borrow  for  working  capital  and other  general  corporate
purposes.  There can be no assurance  that such a facility  will be available to
the  Company in the future or that if such a facility  were  available,  that it
would be  available  on terms and  conditions  acceptable  to the  Company.  See
"Management's  Discussion  and  Analysis of Financial  Condition  and Results of
Operations--Liquidity and Capital Resources."

SUBSTANTIAL INDEBTEDNESS

         At March 31, 1998, the Company had outstanding on a consolidated  basis
approximately  $796.9 million of  indebtedness  and $54.6 million of mandatorily
redeemable  preferred  stock.  In  addition,  the  accretion  of original  issue
discount will cause a $106.9  million  increase in  liabilities  by December 15,
2000  relating  to the 13 7/8%  Senior  Discount  Notes due 2005 of GST USA (the
"Senior Notes") and the 13 7/8% Convertible Senior  Subordinated  Discount Notes
due 2005 of GST (the "Convertible Notes" and together with the Senior Notes, the
"1995 Notes") sold in December  1995, a $116.2  million  increase in liabilities
relating to the Accrual Notes by November 15, 2002 and a $200.0 million increase
in liabilities by May 1, 2003 relating to the Notes. The indentures  relating to
the 1995 Notes (the "1995  Indentures"),  the indenture  relating to the Secured
Notes (the "Secured  Notes  Indenture"),  the indenture  relating to the Accrual
Notes (the "Accrual Notes  Indenture")  and the indenture  relating to the Notes
(the  "Indenture"  and  together  with the 1995  Indentures,  the Secured  Notes
Indenture and the Accrual Notes Indenture,  the "Indentures")  limit, but do not
prohibit, the incurrence of additional indebtedness by the Company. At March 31,
1998, the Company had $30.5 million of availability  under the Tomen Facility to
finance the development and construction of additional  networks,  if and to the
extent that  proposals for funding  projects are approved by Tomen.  The Company
expects to incur substantial additional  indebtedness in the future. The Company
has entered into an agreement with Siemens (the "Siemens Loan  Agreement")  that
provides  for up to an aggregate of $226.0  million in equipment  financing,  of
which $116.0  million is  presently  available to the Company (and of which $7.9
million had been provided at March 31,  1998).  The Company may seek to increase
the amount available up to $226.0 million on an as-needed basis,  subject to the
negotiation and execution of mutually  satisfactory  documentation.  The Company
also  entered into an agreement  (the "NTFC Loan  Agreement")  with NTFC Capital
Corp.  for up to $50.0 million of additional  equipment  financing (all of which
had been  provided  at March  31,  1998).  There  can be no  assurance  that any
additional  financing will be available to the Company on acceptable terms or at
all. See "Description of Certain Indebtedness and Redeemable Preferred Shares."

                                      -15-
<PAGE>
         The  level  of  the  Company's   indebtedness   could  have   important
consequences to its future prospects,  including the following: (i) limiting the
ability  of the  Company  to obtain any  necessary  financing  in the future for
working  capital,  capital  expenditures,  debt  service  requirements  or other
purposes;  (ii) requiring that a substantial  portion of the Company's cash flow
from  operations,  if any,  be  dedicated  to the  payment of  principal  of and
interest  on  its  indebtedness  and  other  obligations;   (iii)  limiting  its
flexibility  in planning for, or reacting to changes in, its business;  (iv) the
Company will be more highly  leveraged than some of its  competitors,  which may
place it at a competitive disadvantage;  and (v) increasing its vulnerability in
the event of a  downturn  in its  business.  See  "Management's  Discussion  and
Analysis of Financial Condition and Results of Operations."

POSSIBLE INABILITY TO SERVICE DEBT; REFINANCING RISKS

         In  connection  with the buildout of its networks and expansion of CLEC
services,  the Company has been  experiencing  increasing  negative EBITDA.  The
Company's earnings before fixed charges were insufficient to cover fixed charges
for the three months ended March 31, 1998,  the 1997 Three Month Period,  Fiscal
1997 and Fiscal 1996 by $46.7 million,  $42.0 million,  $127.0 million and $62.9
million,  respectively,  and the Company's EBITDA minus capital expenditures and
interest expense for the three months ended March 31, 1998, the 1997 Three Month
Period,  Fiscal 1997 and Fiscal 1996 was negative $77.9 million,  negative $77.6
million,  negative  $315.3 million and negative  $152.7  million,  respectively.
There can be no assurance  that the Company will be able to improve its earnings
before fixed  charges or EBITDA or that it will be able to meet its debt service
obligations. As the Company does not currently have a revolving credit facility,
if a shortfall occurs, alternative financing would be necessary in order for the
Company to meet its liquidity  requirements  and there can be no assurance  that
such  financing  would be  available.  In such  event,  the  Company  could face
substantial liquidity problems.  In addition,  the Company anticipates that cash
flow from  operations  will be  insufficient to pay interest in cash on both the
1995 Notes when such  interest  becomes  payable in June 2001 and on the Secured
Notes  starting in November  2000 once the amount  pledged to fund the first six
interest  payments on the Secured Notes is paid and to repay the 1995 Notes, the
Secured  Notes,  the  Accrual  Notes  and the  Notes at  maturity  and that such
indebtedness  will need to be  refinanced.  There can be no  assurance  that the
Company will be able to effect such refinancings.  The ability of the Company to
meet its  obligations  and to effect such  refinancings  will be dependent upon,
among other things, the future performance of the Company, which will be subject
to prevailing economic conditions and to financial,  business and other factors,
including  factors beyond the control of the Company.  Failure by the Company to
meet its obligations  could result in a default on its  indebtedness,  including
the 1995 Notes, the Secured Notes, the Accrual Notes and the Notes,  which would
permit  the  holders  of  substantially  all of the  Company's  indebtedness  to
accelerate the maturity  thereof.  In such event, the Company may not be able to
meet its obligations on the Notes. See "Management's  Discussion and Analysis of
Financial  Condition  and Results of  Operations"  and  "Description  of Certain
Indebtedness and Redeemable Preferred Shares."

INSUFFICIENCY OF ACQUIRED EQUIPMENT TO SATISFY THE NOTES UPON LIQUIDATION

         In the event that GST Network (or upon the  assumption  of the Notes by
GST USA,  GST USA)  were to be  unable  to pay  amounts  due under the Notes and
(following the assumption of the Notes by GST USA) GST were to default under the
Note  Guarantee,  holders of the Notes  would be entitled  to  foreclose  on the
Pledged  Securities,  Acquired  Equipment,  Fee Notes and the Intercompany Notes
(collectively,  the  "Collateral")  to satisfy  indebtedness  under the Notes. A
substantial  portion of the value of the Acquired  Equipment will consist of the
cost of designing,  constructing,  acquiring,  installing and  integrating  such
equipment.  In addition,  because the telecommunications  industry is subject to
rapidly changing technologies and frequent new product introductions,  the value
of the  Acquired  Equipment  may decline  over time.  The value of the  Acquired
Equipment  may also  decline  due to the  availability  and  price of  competing
products  and   technologies,   evolving   industry   standards  and  regulatory
requirements  and  depreciation.  Further,  a foreclosure will not result in the
realization of the full fair market value of the Acquired Equipment because such
value may be affected by the removal from an integrated  network of the Acquired
Equipment and because of costs associated with such foreclosure.  Therefore,  in
the event of foreclosure,  the value of the Acquired  Equipment will not satisfy
the Notes in full.

         Further,  the right of the  Trustee  to  repossess  and  dispose of the
Collateral  upon the  occurrence  of a  default  under the Notes is likely to be
significantly  impaired by applicable  bankruptcy law if a bankruptcy proceeding
were to be  commenced  by or  against  GST  Network  or,  after  the sale of any
Acquired  Equipment to GST USA, GST USA, prior to the Trustee's  having disposed
of the  Collateral.  Under Title XI of the United  States Code (the  "Bankruptcy
Code"),  a secured  creditor such as the Trustee is prohibited from disposing of
security repossessed from a debtor in a bankruptcy case without bankruptcy court
approval. Moreover, the Bankruptcy Code prohibits

                                      -16-

<PAGE>
a secured  creditor from  disposing of  collateral  even though the debtor is in
default under the applicable debt  instruments if the secured  creditor is given
"adequate  protection."  The meaning of the term "adequate  protection" may vary
according to  circumstances,  but it is intended in general to protect the value
of the secured  creditor's  interest  in the  collateral  and may  include  cash
payments or the  granting of  additional  security,  if and at such times as the
court in its  discretion  determines,  for any  diminution  of the  value of the
collateral  as a result of the stay of  disposition  during the  pendency of the
bankruptcy  case.  In  view of the  lack of a  precise  definition  of the  term
"adequate  protection" and the broad discretionary powers of a bankruptcy court,
it is  impossible  to predict how long payment  under the Notes could be delayed
following  commencement of a bankruptcy case,  whether or when the Trustee could
dispose of the Collateral or whether or to what extent holders of Notes would be
compensated for any delay in payment or loss of value of the Collateral  through
the requirement of "adequate protection."

         In addition,  notwithstanding anything to the contrary described above,
unless an event of  default  under the  Indenture  shall  have  occurred  and be
continuing,  GST  Network or GST USA, as the case may be, will have the right to
remain in possession  and retain  exclusive  control of the Acquired  Equipment,
will have the right to freely  utilize the Acquired  Equipment and will have the
right to collect, invest and dispose of any income thereon.

MAINTENANCE OF SECURITY INTEREST IN COLLATERAL

         Under the terms of a Collateral  Pledge and Security  Agreement made by
GST Network to the  Trustee  for the  benefit of the  holders of the Notes,  GST
Network  and,  upon the sale of the  Acquired  Equipment to GST USA, GST USA are
required  to secure  the  Notes and the  Intercompany  Notes,  respectively,  by
granting liens on the Acquired  Equipment.  GST Network and GST USA are required
to file UCC-1  Financing  Statements in each state in which  Acquired  Equipment
will be located  and to  maintain  such  security  filings  in effect  under the
relevant  provisions  of the Uniform  Commercial  Code as in effect in each such
state.  Although  failure to do so may  result in an event of default  under the
Notes,  such failure may allow other creditors of GST Network or, after the sale
of the  Acquired  Equipment  to GST USA,  GST USA,  or owners or  mortgagees  of
property on which  Acquired  Equipment is  installed,  to obtain  rights in such
Acquired  Equipment  that are equal or  superior  to those of the holders of the
Notes.  This could result in some or all of the value of the Acquired  Equipment
not being  available  to the  holders of the Notes to  satisfy  the Notes in the
event of a default.  Such failure could arise,  among other reasons,  because of
the failure to file  continuation  statements  prior to the  expiration  of each
five-year period after the initial filing.

POSSIBLE  INABILITY OF GST USA TO ASSUME,  GST TO  GUARANTEE  AND GST NETWORK TO
REDEEM THE NOTES

         The  Indenture  provides  that GST USA will  assume and become a direct
obligor on the Notes and GST will guarantee the Notes on May 1, 2003, or earlier
if permitted  under the 1995  Indentures,  the Secured  Notes  Indenture and the
Accrual Notes Indenture.  The Indenture  provisions requiring GST USA to assume,
and GST to guarantee,  the Notes,  unless consents are obtained,  require GST to
repay all  indebtedness  then  outstanding that by its terms would prohibit such
assumption or guarantee.  The failure of GST USA to assume the Notes,  or of GST
to  guarantee  the  Notes,  would  result in a  default  under the Notes and the
Intercompany  Notes.  See  "Description of the New  Notes--Events of Default." A
default  under the Notes and the  Intercompany  Notes could  result in a default
under other  indebtedness of the Company,  including the 1995 Notes, the Secured
Notes and the Accrual Notes, which would permit the holders of substantially all
of the Company's indebtedness to accelerate the maturity thereof.

         In the  event  of a  default  on the  Notes  prior  to the time GST USA
becomes a direct obligor on the Notes, and in the event the holders of the Notes
or  the  Trustee  foreclose  on the  collateral  securing  the  Notes  and  such
collateral is insufficient to pay all amounts due on the Notes, the holders will
not have a claim against GST USA or GST under the Notes or the Notes  Guarantee,
other than under the Fee Notes and the Intercompany  Notes pledged to secure the
Notes and to the extent GST  Network is  otherwise a creditor of GST USA or GST.
However,  the  obligations  of GST USA under the Fee Notes and the  Intercompany
Notes, and of GST under the guarantee thereof, may be less than the principal of
and accrued  interest on the Notes. To the extent there is a shortfall,  GST USA
and GST will not be liable to holders of the Notes for  amounts due on the Notes
prior to the time that GST USA becomes a direct  obligor.  GST Network will have
no assets other than the collateral  securing the Notes, which, upon foreclosure
after a default upon the Notes,  may not be  sufficient to repay all amounts due
on the Notes. See  "--Insufficiency  of Acquired  Equipment to Satisfy the Notes
upon Liquidation."

                                      -17-

<PAGE>
FINANCIAL AND OPERATING RESTRICTIONS IMPOSED BY EXISTING INDEBTEDNESS

         The Company's financing  arrangements impose significant  operating and
financial  restrictions on the Company. Such restrictions affect, and in certain
cases  significantly  limit or prohibit,  among other things, the ability of the
Company to incur additional  indebtedness or to create liens on its assets, sell
assets, engage in mergers or acquisitions or make investments. Failure to comply
with any such covenant could result in a default thereunder,  which could result
in  an  acceleration  of  such   indebtedness.   See   "Description  of  Certain
Indebtedness and Redeemable Preferred Shares."

STRUCTURE  OF GST NETWORK,  GST USA AND GST;  SECURED  INDEBTEDNESS;  RANKING OF
NOTES

         GST and GST USA are each holding  companies and none of GST, GST USA or
GST Network conducts any operations.  The principal assets of GST consist of the
common  stock of GST USA,  and the  principal  asset of GST USA  consists of the
common stock of its subsidiaries.  Neither GST USA nor GST will be liable on the
Notes until they are assumed by GST USA.  GST USA must rely upon  payments  from
its  subsidiaries  to  generate  the funds  necessary  to meet its  obligations,
including  the  payment of  principal  of and  interest on the Fee Notes and the
Intercompany Notes and, after its assumption  thereof,  the Notes. GST must rely
upon  dividends  and other  payments  from GST USA's  subsidiaries  should it be
required  to make any  payments  under  the Note  Guarantee.  The  subsidiaries,
however,  are legally distinct from GST and GST USA and such  subsidiaries  will
have no obligation,  contingent or otherwise, to pay amounts due pursuant to the
Notes  or the Note  Guarantee  or to make  funds  available  for  such  payment,
although  GST USA will be  obligated  to make  payments on the Fee Notes and any
Intercompany  Notes.  See  "--Possible  Inability  of GST USA to Assume,  GST to
Guarantee and GST Network to Redeem the Notes." GST USA's  subsidiaries will not
guarantee the Notes. The ability of GST USA's subsidiaries to make such payments
to GST USA will be subject to, among other things,  the  availability  of funds,
the terms of such subsidiaries' indebtedness and applicable state laws. Pursuant
to credit agreements under the Tomen Facility,  GST USA's  subsidiaries that own
and operate the Southern California,  Tucson and Albuquerque and Hawaii networks
may not pay any  dividends or make any  distributions  on their  capital  stock.
Subsequent network financings,  if any, under the Tomen Facility are expected to
include similar prohibitions.

         As of March 31,  1998,  the  Company  and its  subsidiaries  had $405.8
million of secured  indebtedness  outstanding,  including  the Secured Notes and
indebtedness  under the Tomen Facility,  the Siemens Loan Agreement and the NTFC
Loan Agreement.  The Secured Notes are secured by all of the equipment purchased
with the proceeds  thereof as well as certain  intercompany  notes issued by GST
USA.  The  indebtedness  under the Tomen  Facility is secured by the stock,  and
substantially  all of the assets,  of the  Company's  subsidiaries  that own the
Southern  California,  Tucson,  Albuquerque  and Hawaii  networks and subsequent
financings,  if any,  under the Tomen  Facility  are expected to be secured in a
similar manner.  The indebtedness  under the Siemens Loan Agreement and the NTFC
Loan  Agreement  are each secured by the equipment  purchased  with the proceeds
thereof. In addition,  the Indentures permit the Company and its subsidiaries to
incur additional secured indebtedness.  See "Description of Certain Indebtedness
and Redeemable Preferred Shares." In the event that a default were to occur with
respect to any secured indebtedness  incurred by the Company or its subsidiaries
and the holders thereof were to foreclose on the collateral, the holders of such
indebtedness  would  be  entitled  to  payment  out of  the  proceeds  of  their
collateral prior to any holders of any other indebtedness,  including the Notes.
In the event of any bankruptcy, liquidation or reorganization of GST, holders of
secured indebtedness would have a claim, prior to the claim of the holder of the
Notes, on the assets of GST and its subsidiaries securing such indebtedness.  In
addition,  to the extent that the value of such  collateral is  insufficient  to
satisfy  such  secured   indebtedness,   holders  of  amounts  of  such  secured
indebtedness  remaining  outstanding  would be entitled to share pari passu with
holders  of the  Notes  with  respect  to  any  other  assets  of  GST  and  its
subsidiaries  (other than Acquired Equipment and any Intercompany Notes or other
assets securing the Notes). Assets remaining after satisfaction of the claims of
the holders of secured  indebtedness may not be sufficient to pay amounts due on
any or all of the Notes then outstanding.

         Claims  of  creditors  of  GST  USA's  subsidiaries,   including  trade
creditors,  will generally  have priority as to the assets of such  subsidiaries
over the claims of GST Network, GST USA and the holders of GST Network's and GST
USA's  indebtedness,  including the Notes, the Fee Notes, the Intercompany Notes
and the Note  Guarantee.  Accordingly,  after GST USA becomes the obligor on the
Notes, the Notes and the Note Guarantee will be effectively  subordinated to the
liabilities  (including  trade payables) of the  subsidiaries of GST USA, except
with respect to any Acquired  Equipment.  At March 31, 1998, the subsidiaries of
GST USA other than GST Network had  approximately  $442.2 million of liabilities
(excluding intercompany payables), including $401.0 million of indebtedness, all
of which was  secured.  After GST USA becomes  the obligor on the Notes,  to the
extent the Acquired  Equipment is foreclosed  upon and is  insufficient to repay
all amounts due with respect to the Notes, the holders of the Notes would have a
general, unsecured, unsubordinated claim against GST USA for the shortfall.

                                      -18-

<PAGE>
See   "--Insufficiency   of  Acquired   Equipment  to  Satisfy  the  Notes  upon
Liquidation"  and "--Possible  Inability of GST to Assume,  GST to Guarantee and
GST Network to Redeem the Notes."

DIFFICULTIES IN IMPLEMENTING LOCAL AND ENHANCED SERVICES

         The Company has deployed and plans to continue to deploy high  capacity
digital  switches  in the  cities  in which  it  operates  or  plans to  operate
networks,  as well as in  certain  cities  where the  Company  will rely on ILEC
facilities  for  transmission.  This  enables  the Company to offer a variety of
switched  access  services,  enhanced  services and local dial tone. The Company
expects  negative  EBITDA from its switched  services  during the 24 to 36 month
period after a switch is deployed.  For switches  operating in conjunction  with
the Company's networks,  the Company expects operating margins to improve as the
network is expanded and larger  volumes of traffic are carried on the  Company's
network.  For  switches  operating  in cities  where the Company  relies on ILEC
facilities  for  transmission,  the Company  will  experience  lower or negative
operating  margins.  The ILECs will be required to  unbundle  local  tariffs and
permit the Company to purchase only the origination and termination  services it
needs,  thereby decreasing  operating  expenses.  There can be no assurance that
such  unbundling  will be  effected  in a timely  manner  and  result  in prices
favorable to the Company.  In addition,  the Company's  ability to  successfully
implement  its switched and enhanced  services will require the  negotiation  of
resale   agreements   with  ILECs  and  other  CLECs  and  the   negotiation  of
interconnection  agreements with ILECs, which can take considerable time, effort
and expense.

         In August  1996,  the FCC  released  a decision  (the  "Interconnection
Decision")  implementing the interconnection  portions of the Telecommunications
Act  of  1996  (the  "Telecommunications  Act").  The  Interconnection  Decision
establishes rules for negotiating  interconnection agreements and guidelines for
review of such  agreements by state public  utilities  commissions.  On July 18,
1997, the Court of Appeals for the Eighth Circuit (the "Eighth Circuit") vacated
certain  portions  of  the  Interconnection   Decision,   including   provisions
establishing  a pricing  methodology  for  unbundled  elements  and a  procedure
permitting  new  entrants  to "pick and  choose"  among  various  provisions  of
existing  interconnection  agreements  between ILECs and their  competitors.  On
October 14, 1997 the Eighth  Circuit issued a decision  vacating  additional FCC
rules that will likely have the effect of  increasing  the cost of obtaining the
use of combinations of an ILEC's unbundled network elements.  The Eighth Circuit
decision  creates  uncertainty  about the  rules  governing  pricing,  terms and
conditions  of  interconnection  agreements,  and  could  make  negotiating  and
enforcing  such  agreements  more  difficult  and  protracted  and  may  require
renegotiation  of existing  agreements.  The Company had  negotiated a number of
interconnection  agreements  with ILECs  prior to the Eighth  Circuit  decision.
There  can  be  no   assurance   that  the  Company   will  be  able  to  obtain
interconnection agreements on terms acceptable to the Company. The Supreme Court
has accepted for review the Eighth Circuit decisions. See "--Competition."

         The Company will generally be dependent on ILECs for provision of local
telephone  service  through access to local loops,  termination  service and, in
some markets,  central office switches of such carriers. In addition, in certain
markets the Company intends to obtain the local  telephone  services of the ILEC
on a wholesale basis and resell that service to end users. Any successful effort
by the ILEC to deny or  substantially  limit the Company's  access to the ILEC's
network  elements or wholesale  services could have a material adverse effect on
the  Company's  ability  to  provide  local  telephone  services.  Although  the
Telecommunications Act imposes  interconnection  obligations on ILECs, there can
be no assurance  that the Company will be able to obtain  access to such network
elements  or  services at rates,  and on terms and  conditions,  that permit the
Company  to  offer  local  services  at  rates  that  are  both  profitable  and
competitive. As discussed above, the Eighth Circuit recently struck down certain
FCC rules intended to govern such rates, terms and conditions.

         Many new carriers,  including  the Company,  have  experienced  certain
difficulties with respect to provisioning,  interconnection  and the operational
support systems used by new carriers to order and receive  network  elements and
wholesale  services from the ILECs. These systems are necessary for new carriers
such as the  Company  to provide  local  service  to  customers  on a timely and
competitive basis. In addition,  the  Telecommunications  Act creates incentives
for  Regional  Bell  Operating  Companies  ("RBOCs")  to permit  access to their
facilities  by denying  such  carriers  the  ability to  provide  long  distance
services in their regions until they have met specified  conditions  opening the
market to competition at the local level.  However,  the U.S. District Court for
the Northern District of Texas has found these provisions unconstitutional,  but
this order has been stayed pending  appeal.  The RBOCs in the Company's  markets
have indicated their intent to seek authority to provide in-region long distance
services but are not yet permitted to do so. U S WEST Communications, Inc. ("U S
WEST") recently entered into a marketing  arrangement with Qwest  Communications
International  Inc.  ("Qwest")  under which U S WEST would  market  Qwest's long
distance services and would be compensated by Qwest. A number of

                                      -19-

<PAGE>
telecommunications  companies,  including the Company,  have filed suit claiming
that the  arrangement  would  effectively  allow U S WEST to offer long distance
services  before local  competition  had developed in the states it serves.  The
U.S.  District Court enjoined U S WEST's engaging in such marketing  pending the
outcome of an FCC investigation of the  arrangements.  There can be no assurance
that the RBOCs will be  accommodating  to the Company once they are permitted to
offer  in-region long distance  service.  Should the Company be unable to obtain
the  cooperation  of an ILEC in a  region,  whether  or not  such  ILEC has been
authorized to offer in-region long distance  service,  the Company's  ability to
offer local services in such region on a timely and  cost-effective  basis would
be adversely affected.

         The  Company is a recent  entrant  into the newly  created  competitive
local telecommunications  services industry. The local dial tone services market
was opened to competition due to the passage of the  Telecommunications  Act and
related  state and federal  regulatory  rulings.  There are  numerous  operating
complexities  associated with providing these services.  The Company is required
to develop new  products,  services  and  systems  and to develop new  marketing
initiatives to sell these services.

         The Company's  switched  services may not be  profitable  due to, among
other factors, lack of customer demand, inability to secure access to facilities
of ILECs at acceptable rates,  competition from other CLECs and pricing pressure
from the ILECs.  The  Company has very  limited  experience  providing  switched
access  and local  dial tone  services  and there can be no  assurance  that the
Company  will  be able to  successfully  implement  its  switched  and  enhanced
services strategy. See "Business--Telecommunications Services Strategy."

RECENT COMMENCEMENT OF INTEGRATED MARKETING EFFORT

         The Company has only recently begun an integrated  marketing  effort of
its telecommunication service offerings.  Historically, the Company has marketed
its  access  services  primarily  to  long  distance  carriers  and  significant
end-users of  telecommunications  services,  and its long  distance  services to
small businesses and consumers. Although the Company expects to market a variety
of  telecommunications  services  to  all  of  its  customers,  there  can be no
assurance  that the Company will be able to attract and retain new  customers or
retain and sell additional services to existing customers.

DEPENDENCE ON KEY CUSTOMERS

         The  Company's  five  largest  telecommunications   services  customers
accounted  for  approximately  20.5%,  16.8%,  20.8% and 46.9% of the  Company's
consolidated  telecommunications  services  revenues  for the three months ended
March 31,  1998,  the 1997 Three  Month  Period,  Fiscal  1997 and Fiscal  1996,
respectively.  It is anticipated  that during the early stages of development of
individual networks,  before obtaining a sufficient amount of end-user revenues,
the Company will be dependent on a limited number of long distance  carriers for
a significant  portion of its local revenues.  While long distance carriers have
high volume  requirements and have utilized CLECs, they generally are more price
sensitive than end-users. The loss of, or decrease of business from, one or more
significant  customers  could have a material  adverse  effect on the  business,
financial condition and results of operations of the Company.  See "Management's
Discussion and Analysis of Financial Condition and Results of Operations."

RISKS RELATING TO LONG DISTANCE BUSINESS

         For the three months ended March 31, 1998, the 1997 Three Month Period,
Fiscal 1997 and Fiscal 1996, long distance  represented 53.0%,  49.4%, 59.2% and
56.0%  of  the  Company's  consolidated  telecommunications  services  revenues,
respectively.  The long distance  business is extremely  competitive  and prices
have  declined  substantially  in recent  years and are  expected to continue to
decline.  In addition,  the long distance  industry has  historically had a high
average churn rate, as customers  frequently  change long distance  providers in
response  to  the  offering  of  lower  rates  or   promotional   incentives  by
competitors.  See  "--Competition."  The  Company  relies on other  carriers  to
provide  transmission  and  termination  services  for a  majority  of its  long
distance traffic.  The Company has resale agreements with long distance carriers
to provide it with transmission services.  Such agreements typically provide for
the resale of long distance  services on a per minute basis with minimum  volume
commitments. Negotiation of these agreements involves estimates of future supply
and demand for transmission capacity as well as estimates of the calling pattern
and traffic levels of the Company's future  customers.  In the event the Company
fails  to meet  its  minimum  volume  commitments,  it may be  obligated  to pay
underutilization  charges  and in the  event  it  underestimates  its  need  for
transmission  capacity,  the Company may be required to obtain capacity  through
more

                                      -20-

<PAGE>
expensive  means.  See  "Management's   Discussion  and  Analysis  of  Financial
Condition and Results of Operations-- Overview."

         Charges for access service for the  origination and termination of long
distance  traffic have made up a significant  portion of the  Company's  overall
cost of providing long distance service. In May 1997, the FCC adopted changes to
its  interstate  access rules that among other things reduce  per-minute  access
charges and  substitute  new per-line  flat rate monthly  charges.  The FCC also
approved  reductions  in overall  access  rates,  and  established  new rules to
recover subsidies to support  universal  service and other public policies.  The
impact on these changes on the Company or its competitors is not yet clear.  The
Company  could be  adversely  affected  if it does not  experience  access  cost
reductions  proportionally  equivalent to those of its  competitors.  Insofar as
Internet-based  competitors continue to be exempt from these charges, they could
enjoy a significant cost advantage in this area. See "Business-- Regulation."

PRICING PRESSURES AND RISKS OF INDUSTRY OVER-CAPACITY

         The  long   distance   transmission   industry   has   generally   been
characterized by over-capacity and declining prices since shortly after the AT&T
Corp.  ("AT&T")  divestiture  in 1984.  The Company  believes  that, in the last
several years,  increasing  demand has  ameliorated the  over-capacity  and that
pricing pressure has been reduced.  However, the Company anticipates that prices
for its  wholesale  longhaul  services  will  continue to decline  over the next
several  years.  While demand  continues to increase,  the Company is aware that
certain long distance  carriers are expanding  their  capacity and believes that
other long distance carriers, as well as potential new entrants to the industry,
are constructing new fiber optic and other long distance  transmission  networks
in the  United  States.  Since  the cost of the  actual  fiber  (as  opposed  to
construction  costs) is a relatively  small  portion of the cost of building new
transmission lines, persons building such lines are likely to install fiber that
provides  substantially more transmission  capacity than will be needed over the
short or medium term. Further,  recent technological advances may greatly expand
the capacity of existing and new fiber optic cable.  Although such technological
advances  may enable the Company to increase  its  capacity,  an increase in the
capacity of the  Company's  competitors  could  adversely  affect the  Company's
business.  If industry expansion results in capacity that exceeds overall demand
along any of the Company's  routes,  severe  additional  pricing  pressure could
develop. In addition,  strategic alliances or similar transactions,  such as the
long distance capacity  purchasing alliance among certain RBOCs announced in the
spring of 1996,  could result in  additional  pricing  pressure on long distance
carriers.  Furthermore,  the marginal cost of carrying an  additional  call over
existing  fiber optic cable is extremely  low. As a result,  within a few years,
there may be dramatic and substantial price reductions. See "--Competition."

DEPENDENCE ON BILLING,  CUSTOMER  SERVICES AND  INFORMATION  SYSTEMS;  YEAR 2000
ISSUES

         Sophisticated  information  and  processing  systems  are  vital to the
Company's  growth and its ability to monitor costs,  bill  customers,  provision
customer  orders and achieve  operating  efficiencies.  Billing and  information
systems  for the  Company's  historical  lines of  business  have been  produced
largely  in-house with partial  reliance on third-party  vendors.  These systems
have generally met the Company's needs due in part to the low volume of customer
billing. As the Company transitions to the provisioning of local services and as
its long  distance  and  Internet  operations  continue to expand,  the need for
sophisticated  billing and  information  systems will continue to increase.  The
Company's plans for the development  and  implementation  of its billing systems
rely, for the most part, on the delivery of products and services by third party
vendors. Similarly, the Company is developing customer call centers to provision
service  orders.  Information  systems  are  vital  to the  success  of the call
centers,  and the  information  systems for these call centers are largely being
developed by third party vendors.  Failure of these vendors to deliver  proposed
products and services in a timely and effective manner and at acceptable  costs,
failure  of the  Company  to  adequately  identify  all of its  information  and
processing  needs,  failure of the Company's  related  processing or information
systems,  or the failure of the Company to upgrade  systems as  necessary  could
have a  material  adverse  effect on the  ability  of the  Company  to reach its
objectives, its financial condition and its results of operations.

         Many  computer  systems will  experience  difficulty  processing  dates
beyond  the year  1999  and will  need to be  modified  prior to the year  2000.
Failure  to  make  such  modifications   could  result  in  system  failures  or
miscalculations  causing  disruptions of operations,  including  among others an
inability to process  transactions,  send invoices or engage in normal  business
activities.  The  Company's  core  internal  systems  that  have  been  recently
implemented  are year 2000  compliant.  The remaining core internal  systems are
scheduled  to be replaced by the second  quarter of 1999 and are  expected to be
year 2000 compliant when installed. The Company is also completing

                                      -21-

<PAGE>
a  preliminary  assessment  of year 2000 issues not related to its core systems,
including  issues  surrounding  systems that  interface  with those  operated by
unrelated parties. Based on its initial evaluation, the Company does not believe
that the cost of remedial  actions  will have a material  adverse  effect on the
Company's  results  of  operations  and  financial  condition.  There  can be no
assurance,  however,  that  there  will not be a delay  in, or  increased  costs
associated with, the  implementation of changes as the program  progresses,  and
failure to implement such changes could have an adverse effect on future results
of operations.

COMPETITION

         The telecommunications industry is highly competitive. In most markets,
the Company's  principal  competitor for local exchange  services is the RBOC or
GTE  Corporation   and  its  affiliated   companies   (collectively,   the  "GTE
Companies").  Other competitors may include other CLECs, microwave and satellite
carriers,  wireless  telecommunications  providers and private networks built by
large end-users. Potential competitors (using similar or different technologies)
include cable  television  companies,  utilities and RBOCs outside their current
local service areas. In addition,  the Company  anticipates  future  competition
from large long distance carriers, such as AT&T, MCI Communications  Corporation
("MCI") and Sprint Corporation ("Sprint"),  which have begun to offer integrated
local and long distance telecommunications services. AT&T also has announced its
intention  to offer local  services  using a new  wireless  technology.  Several
companies have begun to offer  telecommunications  services over the Internet at
rates  substantially  below  current long  distance  rates.  Companies  offering
telecommunications  services over the Internet  could enjoy a  significant  cost
advantage  because  at this  time  they do not pay  carrier  access  charges  or
universal service fees. The influx of competitors into the Company's markets and
into  markets  that the  Company  may  subsequently  enter  may  result  in more
participants than can ultimately be successful in a given market.  Consolidation
of telecommunications  companies and the formation of strategic alliances within
the telecommunications industry, as well as the development of new technologies,
could give rise to significant  new competitors to the Company.  In addition,  a
continuing  trend toward business  combinations  and strategic  alliances in the
telecommunications  industry  may  further  enhance  competition.  For  example,
WorldCom Inc. ("WorldCom") acquired MFS Communications Company, Inc. ("MFS") and
Brooks Fiber  Properties Inc.  ("Brooks") and has agreed to acquire MCI, each of
which  compete  with the  Company in several of the markets in which the Company
operates.  AT&T has  agreed  to  acquire  Teleport  Communications  Group,  Inc.
("Teleport"), a CLEC that also competes with the Company in several markets. The
Company  cannot  determine  what  effect  such  acquisitions  will  have  on the
Company's business, financial condition and results of operations.

         As a  recent  entrant  in the  integrated  telecommunications  services
industry,  the  Company  has not  achieved  and does not  expect  to  achieve  a
significant market share for any of its services. In particular,  the RBOCs, the
GTE  Companies  and  other  local   telephone   companies   have   long-standing
relationships  with their  customers,  have  financial,  technical and marketing
resources substantially greater than those of the Company, have the potential to
subsidize  competitive  services with revenues from a variety of businesses  and
currently  benefit from certain  existing  regulations that favor the ILECs over
the Company in certain  respects.  While recent  regulatory  initiatives,  which
allow CLECs such as the Company to interconnect  with ILEC  facilities,  provide
increased  business   opportunities  for  the  Company,   such   interconnection
opportunities  have been  accompanied by increased  pricing  flexibility for and
relaxation of regulatory  oversight of the ILECs.  For example,  the FCC granted
ILECs additional  flexibility in pricing their  interstate  special and switched
access services on a central office  specific basis.  Under this pricing scheme,
ILECs may  establish  pricing zones based on access  traffic  density and charge
different  prices for central offices in each zone. On February 8, 1997, new FCC
rules became effective  allowing ILECs to file  streamlined  tariffs on 15 days'
notice for rate increases and seven days' notice for rate decreases.  Unless the
FCC acts during the notice period, such tariffs become effective at its end. The
Company has begun to target  Tier 1 cities and  competition  in such  markets is
expected to be  significantly  greater than in Tier 2 and Tier 3 cities in which
the Company is currently operating.

         To the extent the Company  interconnects with and uses ILEC networks to
service its  customers,  the Company will be dependent  upon the  technology and
capabilities  of the  ILECs  to meet  certain  telecommunications  needs  of the
Company's  customers  and to maintain  its service  standards.  The Company will
become increasingly dependent on interconnection with ILECs as switched services
become a greater percentage of the Company's  business.  The  Telecommunications
Act imposes interconnection  obligations on ILECs, but there can be no assurance
that the  Company  will be able to obtain the  interconnection  it  requires  at
rates,  and on terms and  conditions,  that permit the Company to offer switched
services at rates that are  simultaneously  competitive and profitable.  See "--
Difficulties in Implementing Local and Enhanced Services." In the event that the
Company experiences difficulties

                                      -22-

<PAGE>
in obtaining  high  quality,  reliable and  reasonably  priced  service from the
ILECs, the  attractiveness  of the Company's  services to its customers could be
impaired.

         The  long   distance   telecommunications   industry   has   relatively
insignificant  barriers  to  entry,  numerous  entities  competing  for the same
customers  and a high average churn rate,  as customers  frequently  change long
distance  providers  in response to the  offering of lower rates or  promotional
incentives by  competitors.  The Company  competes  with major  carriers such as
AT&T,  MCI,  Sprint and  WorldCom,  as well as other  national and regional long
distance  carriers and resellers,  many of whom are able to provide  services at
costs that are lower than the Company's current costs. Many of these competitors
have greater financial,  technological and marketing resources than the Company.
In addition, as a result of the  Telecommunications  Act, the RBOCs are expected
to become  competitors  in the long  distance  telecommunications  industry both
outside  of  their  service  territory  and  upon the  satisfaction  of  certain
conditions,  within their service  territory.  U S WEST recently  entered into a
marketing  arrangement with Qwest under which U S WEST would market Qwest's long
distance   services   and  would  be   compensated   by   Qwest.   A  number  of
telecommunications  companies,  including the Company,  have filed suit claiming
that the  arrangement  would  effectively  allow U S WEST to offer long distance
services  before local  competition  had developed in the states it serves.  The
U.S.  District Court enjoined U S WEST's engaging in such marketing  pending the
outcome  of  an  FCC  investigation  of  the  arrangements.  SBC  Communications
Corporation  ("SBC") has  challenged  the  constitutionality  of the  provisions
conditioning RBOC entry into in-region long distance service.  The U.S. District
Court has  determined  that the  provision  of the  Telecommunications  Act that
prohibits RBOC entry into long distance markets is  unconstitutional.  A stay of
that decision has been granted  pending a decision by the United States Court of
Appeals  for  the  Fifth  Circuit  (the  "Fifth   Circuit").   See   "Business--
Regulation."

         The Company believes that the principal  competitive  factors affecting
its long distance  operations are pricing,  customer service,  accurate billing,
clear pricing policies and, to a lesser extent, variety of services. The ability
of the Company to compete  effectively will depend upon its continued ability to
maintain high quality,  market driven  services at prices  generally equal to or
below those charged by its competitors. To maintain its competitive posture, the
Company  believes that it must be in a position to reduce its prices in order to
meet reductions in rates, if any, by others. Any such reductions could adversely
affect the Company.

         The Company's longhaul business is subject to intense competition.  See
"--Pricing Pressures and Risks of Industry Over-Capacity."

         The  Internet  services  market  is  highly  competitive.  There are no
substantial  barriers to entry,  and the Company expects that  competition  will
continue to intensify. The Company's competitors in this market include Internet
service providers, other telecommunications companies, online services providers
and  Internet  software  providers.  Many  of  these  competitors  have  greater
financial,  technological  and marketing  resources than those  available to the
Company.

         On February 25, 1998, U S WEST  petitioned the FCC to allow it to build
and operate packet- and cell-switched  data networks across LATA boundaries,  to
permit it to carry  interLATA data traffic  incident to its provision of digital
subscriber  line  services,  to not  require  it to  make  those  data  services
available  on a  discounted  resale  basis  and to not  require  it to make  the
non-bottleneck  elements of such services  available on an unbundled  basis.  On
June 9, 1998,  SBC filed a similar  petition with the FCC. The Company  provides
certain  services with which U S WEST and SBC's proposed  services would compete
if the petitions were granted by the FCC.

         The   World   Trade    Organization    ("WTO")   agreement   on   basic
telecommunications   services  could  increase  the  Company's  competition  for
telecommunication  services both  domestically and  internationally.  Under this
agreement,  the United States and other members of the WTO committed  themselves
to opening their telecommunications markets to competition and foreign ownership
and  to   adopting   regulatory   measures   to  protect   competitors   against
anticompetitive  behavior by dominant  telephone  companies,  effective  in some
cases  as  early  as   January   1,  1998.   See   "Business--Competition"   and
"--Regulation."

         The Company believes that providers of wireless  services  increasingly
will offer,  in  addition to products  that  supplement  a  customer's  wireline
communications,  wireline  replacement  products  that may  result  in  wireless
services becoming the customer's primary mode of communication. Competition with
providers of wireless services may be intense.  Many of the Company's  potential
wireless competitors have substantially greater financial, technical, marketing,
sales,  manufacturing and distribution resources than the Company.  Furthermore,
the FCC has

                                      -23-

<PAGE>
made spectrum  available  through public auction over the past several years for
use in  wireless  communications  and  began  offering  additional  spectrum  in
February 1998.  This  additional  spectrum is intended by the FCC to be used for
broadband,  data and video  transmission  but its use in wireless  local loop is
also possible.

GOVERNMENT REGULATION

         The  Company's  networks and the provision of switched and private line
services are subject to significant  regulation at the federal,  state and local
levels.  Delays in receiving required  regulatory  approvals or the enactment of
new adverse  regulation or regulatory  requirements  may have a material adverse
effect upon the Company.  The FCC exercises  jurisdiction  over the Company with
respect to interstate  and  international  services.  Additionally,  the Company
files tariffs with the FCC. On October 29, 1996,  the FCC approved an order that
eliminates the tariff filing  requirements for interstate domestic long distance
service provided by non-dominant  carriers such as the Company.  On February 13,
1997,  the United  States Court of Appeals for the District of Columbia  Circuit
stayed  the  FCC  order.  In  addition,   the  Company  must  obtain  prior  FCC
authorization  for installation  and operation of  international  facilities and
international  long distance  services.  State regulatory  commissions  exercise
jurisdiction over the Company to the extent it provides intrastate services.  As
such a provider,  the Company is  required  to obtain  regulatory  authorization
and/or  file  tariffs  at  state  agencies  in most of the  states  in  which it
operates.  Certificates  of  authority  to provide  services  can  generally  be
conditioned,  modified,  cancelled,  terminated or revoked for failure to comply
with rules and regulations. Fines and other penalties may also be imposed. Local
authorities  regulate  the  Company's  access to  municipal  rights-of-way.  The
networks are also subject to numerous local  regulations  such as building codes
and  licensing.  Such  regulations  vary on a city by city and  county by county
basis.  See  "Business--Regulation."  There can be no assurance  that the FCC or
state  commissions  will grant required  authority or refrain from taking action
against the Company if it is found to have provided  services without  obtaining
the necessary authorizations. If authority is not obtained or if tariffs are not
filed,  or are not  updated,  or  otherwise  do not fully comply with the tariff
filing  rules  of  the  FCC or  state  regulatory  agencies,  third  parties  or
regulators  could  challenge  these  actions.  Such  challenges  could cause the
Company to incur substantial legal and administrative expenses.

         The Telecommunications  Act provides for a significant  deregulation of
the domestic  telecommunications  industry,  including the local exchange,  long
distance and cable television  industries.  The  Telecommunications  Act remains
subject to judicial review and additional FCC and state rulemakings, and thus it
is difficult to predict what effect the legislation will have on the Company and
its operations.  There are currently many regulatory  actions underway and being
contemplated by federal and state authorities regarding  interconnection pricing
and other  issues  that could  result in  significant  changes  to the  business
conditions in the  telecommunications  industry.  There can be no assurance that
these changes will not have a material adverse effect upon the Company.

         In addition to requirements placed on ILECs, the Telecommunications Act
subjects  the  Company  to  certain  federal  regulatory  requirements  upon the
Company's  provision of local exchange service in a market.  All ILECs and CLECs
must  interconnect  with other  carriers,  provide  nondiscriminatory  access to
rights-of-way,  offer  reciprocal  compensation  for  termination of traffic and
provide dialing parity and telephone number portability.  The Telecommunications
Act also requires all telecommunications  carriers to ensure that their services
are accessible to and usable by persons with disabilities.

         On May 8, 1997, the FCC released an order  establishing a significantly
expanded  federal  telecommunications  subsidy  regime.  For  example,  the  FCC
established  new  subsidies  for  services  provided to  qualifying  schools and
libraries with an annual cap of $2.25 billion and for services provided to rural
health care providers with an annual cap of $400 million.  The FCC also expanded
the  federal  subsidies  to  low-income   consumers.   Providers  of  interstate
telecommunications  service,  such as the  Company,  as well  as  certain  other
entities,  must pay for these  programs.  The  Company's  share of these federal
subsidy funds will be based on its share of certain  defined  telecommunications
end-user  revenues.  The  revenues for the high cost and low income fund are the
Company's estimated quarterly  interstate and gross end-user  telecommunications
revenues.  The revenues for the schools and libraries and rural health care fund
are the Company's estimated quarterly  intrastate,  interstate and international
gross end-user  telecommunications  revenues. The contribution factors issued by
the FCC for the first,  second and third  quarters of 1998 are 3.19%,  3.14% and
3.14%,  respectively,  for the high cost and low income fund and .72%,  .76% and
 .75%,  respectively,  for the schools,  libraries and rural healthcare fund. The
amounts contributed may be billed to customers.  The Company has been billed for
such  contributions  and on an annualized  basis,  the amounts billed would have
represented  less than 1% of total  revenues  for  Fiscal  1997.  In the May 8th
order, the FCC also announced that it will soon revise its rules for subsidizing
service provided to consumers in

                                      -24-

<PAGE>
high cost areas.  Several parties have appealed the May 8th order.  Such appeals
have been  consolidated  and  transferred  to the Fifth  Circuit  where they are
currently pending. In addition,  on July 3, 1997, several ILECs filed a petition
for stay of the May 8th order with the FCC. That petition is pending.

         The FCC released a Report to Congress on April 10, 1998  concerning its
implementation   of   the   telecommunications   subsidy   provisions   of   the
Telecommunications   Act.  The  FCC   clarified   that   entities  that  provide
transmission    capacity   to   Internet   service   providers   are   providing
telecommunications  services  subject  to  contribution  requirements.  The  FCC
indicated that it would address the issue of whether ISPs would  contribute to a
universal  service  fund  based on the  utilization  of their  own  transmission
facilities   at  a  later  date  and  whether   certain  ISP  services  such  as
phone-to-phone IP telephony are telecommunications services subject to universal
service fund contribution and access charge payments.

         In a  combined  Report  and Order and  Notice  of  Proposed  Rulemaking
released on December 24, 1996, the FCC made changes and proposed further changes
in the  interstate  access charge  structure.  In the Report and Order,  the FCC
removed  restrictions  on ILECs'  ability to lower access prices and relaxed the
regulation  of new switched  access  services in those  markets  where there are
other providers of access services. If this increased pricing flexibility is not
effectively  monitored by federal  regulators,  it could have a material adverse
effect on the  Company's  ability  to  compete in  providing  interstate  access
services.  On May 16, 1997, the FCC released an order revising its access charge
rate  structure.  The new rules  substantially  increase  the costs  that  ILECs
subject to the FCC's price cap rules ("price cap LECs") recover through monthly,
non-traffic  sensitive access charges and substantially  decrease the costs that
price cap LECs recover through traffic sensitive access charges. In the May 16th
order,  the FCC also announced its plan to bring  interstate  access rate levels
more in line with cost.  The plan will  include  rules that grant price cap LECs
increased pricing flexibility upon  demonstrations of increased  competition (or
potential  competition)  in  relevant  markets.  The  manner  in  which  the FCC
implements  this approach to lowering access charge levels could have a material
effect on the  Company's  ability  to  compete in  providing  interstate  access
services.  Several parties have appealed the May 16th order.  Those appeals have
been  consolidated and transferred to the United States Court of Appeals for the
Eight Circuit where they are currently pending.

         In  addition,   federal  regulations  impose  restrictions  on  foreign
ownership of  communications  service  providers  utilizing  radio  frequencies,
including  microwave radio facilities,  and cellular and personal  communication
service ("PCS")  facilities.  The operations of GST Telecom  Hawaii,  Inc. ("GST
Hawaii"), a wholly-owned  subsidiary of GST that conducts the Company's business
in Hawaii, use, among other transmission facilities,  microwave radio facilities
operating pursuant to FCC licenses granted to Pacwest Network,  Inc. ("PNI"), an
entity  that is  controlled  by John  Warta,  a director  of the Company and the
Company's former Chairman of the Board and Chief Executive Officer.  As a result
of changes in federal  policies,  it is the  intention of the Company and PNI to
reach an agreement to transfer such microwave facilities and associated licenses
to the Company,  subject to FCC approval. The FCC also has the authority,  which
it is not presently  exercising,  to impose restrictions on foreign ownership of
communications  service providers not utilizing radio frequencies.  In the event
the FCC exercises such authority, it could have a material adverse effect on the
Company's CLEC and other businesses. See "Business-- Regulation."

NEED TO ADAPT TO TECHNOLOGICAL CHANGE

         The  telecommunications  industry  is subject to rapid and  significant
changes  in  technology,  with the  Company  relying  on third  parties  for the
development of and access to new technology. The effect of technological changes
on the business of the Company  cannot be  predicted.  The Company  believes its
future  success will depend,  in part,  on its ability to anticipate or adapt to
such  changes  and to offer,  on a timely  basis,  services  that meet  customer
demands.

LITIGATION RISKS

         The  Company is involved in various  legal  proceedings.  An action was
commenced against NACT alleging that its telephone systems incorporating prepaid
debit card features  infringe upon a patent issued in 1987.  The Company and GST
USA were added as defendants to such action in August 1997.  Concurrent with the
NACT Sale, the Company and World Access,  Inc. entered into an agreement whereby
the Company  generally  will bear 50% of any  damages in the  action,  including
reasonable  attorneys'  fees,  losses,  liabilities,   claims  and  assessments,
royalties and license fees provided that if a court  determines  that the patent
is valid and that it has been infringed, the Company's liability associated with
future royalties, license fees, refunds and cost of product replacement or

                                      -25-

<PAGE>
modification is limited to $2.0 million. An unfavorable  decision in such action
could have a material adverse effect on the Company.  Other legal proceedings to
which the Company is a party could have an adverse  effect on the  Company.  See
"Business--Legal Proceedings."

POSSIBLE INABILITY TO RECOVER PAYMENTS MADE TO MAGNACOM

         Magnacom  Wireless,  L.L.C.  ("Magnacom"),  a company 99% owned by PNI,
which is controlled  by John Warta,  a director of the Company and the Company's
former Chairman of the Board and Chief Executive  Officer,  has acquired various
PCS licenses. Magnacom holds 30 MHz (C Block) PCS licenses for eleven markets in
Arizona,  Arkansas, New Mexico, Oregon and Utah. Magnacom was the winning bidder
for 10 MHz licenses in the FCC's F Block in 13 markets in Hawaii,  Idaho, Oregon
and  Washington in an FCC auction.  Magnacom has obtained  authority to effect a
reorganization with PCS Plus Holdings Corporation ("PCS Plus Holdings"), another
company  controlled by Mr. Warta (the  "Reorganization")  and of which Mr. Warta
and Stephen  Irwin,  Vice  Chairman of the Board and  Secretary  of the Company,
serve as officers and directors.

         Magnacom  and the  Company  have  entered  into a master  services  and
facilities agreement (the "Magnacom Services Agreement") with an initial term of
five years pursuant to which (i) the Company has been designated a non-exclusive
reseller of PCS telephone services in the markets in which Magnacom has obtained
licenses,  and (ii) Magnacom has granted the Company a right of first refusal to
provide   switched   local  and  long  distance   services  and  other  enhanced
telecommunications services, to all of Magnacom's resellers in markets where the
Company has  operational  networks  provided that the Company's  rates and other
terms of service are competitive. Magnacom has agreed to sell PCS minutes to the
Company at $.05 per  minute,  subject to downward  adjustment  to equal the most
favorable rates offered to Magnacom's other resellers (but in no event less than
Magnacom's  cost). In connection  with the Magnacom  Services  Agreement,  as of
March 31, 1998,  the Company had paid  Magnacom  approximately  $14.4 million as
prepayments for future PCS services. In addition,  the Company has made advances
to  Magnacom  aggregating  $818,000  at July  28,  1998 on  account  of  certain
operating expenses of Magnacom.

         The  Company has been  granted an option to acquire up to PNI's  entire
interest in Magnacom (currently 99%). The exercise of the option will be subject
to compliance with all applicable FCC regulations  relating to prior approval of
any transfer of control of PCS  licenses,  including  those  relating to foreign
ownership or control and  requirements  regarding the ownership of C and F block
licenses and interests in C and F block licensees.  Accordingly, until such time
as FCC regulations or administrative  action permit the Company to own in excess
of 25% of  Magnacom,  the option by its terms is limited  to a 24%  interest  in
Magnacom  and the option is to be  modified  to provide  that the Company own no
more than a 25% interest in Magnacom or PCS Plus Holdings upon exercise thereof.
The Company,  Magnacom,  PNI and a prospective financing source are currently in
negotiations  with respect to the modification of existing  arrangements.  There
can be no assurance that such negotiations will result in such a modification or
that such a modification will be more favorable to the Company.

         In  addition,  the  Company may issue a warrant to purchase up to 4% of
the then outstanding Common Shares in connection with financing for Magnacom. If
such warrant is issued, the Company will record a one-time noncash charge, in an
amount  equal to the value of the  warrant.  See  "Management's  Discussion  and
Analysis of Financial Condition and Results of Operations."

         The provision of wireless  telecommunications  service by Magnacom will
be dependent upon its ability to obtain the financing necessary to make payments
to the FCC under the terms of its  licenses,  to obtain  working  capital and to
build the required  facilities,  including  the  purchase of  telecommunications
equipment. There can be no assurance that Magnacom will obtain such financing or
be able to provide PCS  services.  In such event,  the Company  would  likely be
unable to recover its payments to Magnacom. See "Business--Magnacom."

DEPENDENCE ON KEY PERSONNEL

         The efforts of a small number of key management and operating personnel
will largely determine the Company's success and the loss of any of such persons
could adversely  affect the Company.  The success of the Company also depends in
part upon its ability to hire and retain highly skilled and qualified operating,
marketing,  financial and technical  personnel.  The  competition  for qualified
personnel in the telecommunications industry is intense and, accordingly,  there
can be no assurance  that the Company  will be able to hire or retain  necessary
personnel.

                                      -26-

<PAGE>
DEPENDENCE ON RIGHTS-OF-WAY AND OTHER THIRD PARTY AGREEMENTS

         The Company must obtain  easements,  rights-of-way,  entry to premises,
franchises  and licenses  from various  private  parties,  actual and  potential
competitors  and state and local  governments  in order to construct and operate
its  networks.   There  can  be  no  assurance  that  the  Company  will  obtain
rights-of-way  and franchise  agreements on acceptable  terms or that current or
potential  competitors  will not  obtain  similar  rights-of-way  and  franchise
agreements  that will allow them to compete  against the Company.  If any of the
existing  franchise or license agreements were terminated or not renewed and the
Company  were forced to remove its fiber optic cables or abandon its networks in
place, such termination could have a material adverse effect on the Company. See
"Business--Legal Proceedings" and "--Regulation."

RISK OF JOINT INVESTMENTS

         The  Company  has  invested  in one joint  venture  and may enter  into
additional  joint ventures in the future.  There are risks in  participating  in
joint ventures,  including the risk that the other joint venture partners may at
any  time  have  economic,  business  or  legal  interests  or  goals  that  are
inconsistent  with those of the joint  venture or the Company.  The risk is also
present that a joint venture partner may be unable to meet its economic or other
obligations  to the venture and that the Company may be required to fulfill some
or all of those  obligations.  In  addition,  to the  extent  that  the  Company
participates in  international  joint ventures,  the operations of such ventures
will be  subject  to  various  additional  risks not  present  in the  Company's
domestic  joint  ventures,  such as  fluctuations  in currency  exchange  rates,
nationalization or expropriation of assets,  import/export  controls,  political
instability,  limitations on foreign investment,  restrictions on the ability to
convert currencies and the additional  expenses and risks inherent in conducting
operations in geographically distant locations with customers speaking different
languages and having different cultural approaches to the conduct of business.

         As of February 28, 1998,  the Company had invested  approximately  $3.7
million  to  acquire  3.6  million  shares  and  warrants  to  purchase  750,000
additional  shares  in  a  publicly-traded  Canadian  corporation  (subsequently
renamed GST Global  Telecommunications Inc., "Global"). At that date, Global had
approximately 14.7 million shares outstanding (approximately 28.7 million shares
on a fully diluted basis,  excluding any additional shares that may be issued to
the Company as discussed below).  The Company asserts that Global is to issue to
the Company a minimum of  3,000,000  and up to an  additional  5,000,000  common
shares of Global,  subject  to  regulatory  approval  in  consideration  for the
transfer by the Company to Global of its rights to acquire a  telecommunications
project in Mexico (the "Bestel  Project").  Global has asserted that the Company
is only entitled to receive up to 3,000,000  additional common shares of Global,
subject to the approval of its board of directors and  regulatory  approval.  To
date,  Global has not issued any common shares to the Company in respect of such
transfer. See "Business--GST Global Telecommunications Inc."

RISKS OF INVESTMENT IN A CANADIAN CORPORATION

         GST  is  a   corporation   incorporated   under  the  Canada   Business
Corporations  Act.  Certain  of the  directors  and the  Company's  professional
advisors are residents of Canada or otherwise  reside outside of the U.S. All or
a  substantial  portion  of the  assets of such  persons  are or may be  located
outside of the U.S. It may be difficult for U.S.  noteholders  to effect service
of  process  within  the  United  States  upon  GST or upon  such  directors  or
professional  advisors or to realize in the U.S. upon  judgments of U.S.  courts
predicated  upon civil  liability  of GST or such  persons  under  U.S.  federal
securities laws. GST has been advised that there is doubt as to whether Canadian
courts would (i) enforce  judgments of U.S. courts obtained  against GST or such
directors or professional  advisors predicated solely upon the civil liabilities
provisions  of U.S.  federal  securities  laws,  or (ii) impose  liabilities  in
original  actions  against  GST or  such  directors  and  professional  advisors
predicated  solely  upon  such  U.S.  laws.  However,  a  judgment  against  GST
predicated  solely  upon  civil  liabilities  provisions  of such  U.S.  federal
securities  laws may be  enforceable  in Canada if the U.S.  court in which such
judgment was obtained has a basis for  jurisdiction in that matter that would be
recognized by a Canadian court. In addition,  GST's status as a Canadian company
could, under certain  circumstances  limit the ability of GST to hold or control
radio frequency licenses in the United States.

ORIGINAL ISSUE DISCOUNT;  POSSIBLE  UNFAVORABLE TAX AND OTHER LEGAL CONSEQUENCES
FOR HOLDERS OF THE NOTES AND THE COMPANY

         The Notes were issued at a substantial  discount  from their  principal
amount and there will be no  periodic  payments in cash of interest on the Notes
prior to November 1, 2003. Consequently,  purchasers of the Notes generally will
be required to include  amounts in gross income for United States federal income
tax  purposes in advance of receipt of the cash  payments to which the income is
attributable.

                                      -27-

<PAGE>
         If a  bankruptcy  case  under  the  U.S.  Bankruptcy  Code  were  to be
commenced by or against GST Network  after the issuance of the Notes,  the claim
of a holder of Notes  might be limited to an amount  equal to the sum of (i) the
initial offering price for the Notes and (ii) that portion of the original issue
discount  that  would not be  deemed  to  constitute  "unmatured  interest"  for
purposes of the U.S.  Bankruptcy  Code. Any original issue discount that was not
amortized  as of the  time  of  any  such  bankruptcy  filing  would  constitute
"unmatured interest."

FORWARD-LOOKING STATEMENTS AND ASSOCIATED RISKS

         This  Prospectus   contains   forward-looking   statements,   including
statements  regarding the Company's  expected financial  position,  business and
financing plans.  These  forward-looking  statements reflect the Company's views
with respect to future events and financial performance.  The words,  "believe,"
"expect,"   "plans"   and   "anticipate"   and  similar   expressions   identify
forward-looking statements.  Although the Company believes that the expectations
reflected in such  forward-looking  statements  are  reasonable,  it can give no
assurance  that such  expectations  will prove to have been  correct.  Important
factors  that  could  cause  actual  results  to  differ  materially  from  such
expectations  (the  "Cautionary  Statements")  are disclosed in this Prospectus,
including,   without   limitation,   in  conjunction  with  the  forward-looking
statements  included in this Prospectus and under "Risk Factors." All subsequent
written and oral  forward-looking  statements  attributable to the Company,  its
subsidiaries or persons acting on the Company's  behalf are expressly  qualified
in their  entirety by the  Cautionary  Statements.  Readers are cautioned not to
place undue reliance on these forward-looking statements, which speak only as of
their dates.  The Company  undertakes no obligation to publicly update or revise
any forward-looking statements,  whether as a result of new information,  future
events or otherwise.

EXCHANGE OF NOTES

         Under  current  United  States  tax  laws,  no  gain  or  loss  will be
recognized by an exchanging Holder upon an exchange of the Old Notes for the New
Notes.  A Holder's basis in the New Notes will be the same as the Holder's basis
in the Old Notes,  and the Holder's holding period in the New Notes will include
the  period  during  which the Old Notes  had been  held by the  Holder.  If the
exchange of the Old Notes for the New Notes were deemed by the Internal  Revenue
Service (the  "Service") to constitute  the exchange of a debt  instrument for a
modified  instrument  that  differed  materially  either  in kind or in  extent,
additional  original  issue discount  could arise.  However,  under the relevant
regulations  issued  by the  Service,  the New  Notes  should  not be  deemed to
constitute a  modification  of the Old Notes,  inasmuch as the New Notes reflect
all of the  terms and  conditions  of the Old Notes in  registered  form,  which
registration  results  from the  original  terms of the Old Notes.  See "Certain
United States Federal Income Tax Considerations."

LACK OF A PUBLIC MARKET

         The New  Notes  will  constitute  a new  issue  of  securities  with no
established trading market. GST Network does not intend to list the New Notes on
any United States securities  exchange or to seek approval for quotation through
any automated  quotation  system.  GST Network has been advised by the Placement
Agents that following  completion of the Exchange  Offer,  the Placement  Agents
intend to make a market in the New Notes.  However, the Placement Agents are not
obligated  to do so and any  market-making  activities  with  respect to the New
Notes may be discontinued at any time without notice.  Accordingly, no assurance
can be given that an active  public or other  market  will  develop  for the New
Notes or as to the  liquidity of or the trading  market for the New Notes.  If a
trading market does not develop or is not  maintained,  Holders of the New Notes
may  experience  difficulty  in reselling the New Notes or may be unable to sell
them at all. If a market for the New Notes  develops,  any such market may cease
to continue at any time. If a public trading market  develops for the New Notes,
future trading  prices of the New Notes will depend on many factors,  including,
among  other  things,  prevailing  interest  rates,  the  Company's  results  of
operations and the market for similar  securities  and other factors,  including
the financial condition of the Company.


                                      -28-

<PAGE>
CONSEQUENCES OF THE EXCHANGE OFFER TO NON-TENDERING HOLDERS OF THE OLD NOTES

         In the event the Exchange Offer is consummated, GST Network will not be
required to register  any Old Notes not  tendered  and  accepted in the Exchange
Offer. In such event, Holders of Old Notes seeking liquidity in their investment
would have to rely on  exemptions  to the  registration  requirements  under the
Securities Act. Following the Exchange Offer, none of the Notes will be entitled
to the  contingent  increase in interest  rate  provided  for (in the event of a
failure to consummate  the Exchange  Offer in  accordance  with the terms of the
Registration Rights Agreement) pursuant to the Registration Rights Agreement.

POSSIBLE TREATMENT OF THE NOTES AS EQUITY

         Although  the  Company  believes  that the Notes  should be  treated as
indebtedness  for United  States  income tax  purposes,  it is possible that the
Notes may be treated as equity.  In the unlikely  event the Notes are treated as
equity, the amount of any actual or constructive  distributions on any such Note
would  first be taxable to the  holder as  dividend  income to the extent of the
issuer's current and accumulated earnings and profits, and next would be treated
as a return of capital to the extent of the holder's tax basis in the Note, with
any remaining amount treated as gain from the sale of a Note. As a result, until
such time as the issuer has earnings and profits as determined for United States
federal income tax purposes, distributions on any Note treated as equity will be
a  nontaxable  return of capital and will be applied  against and in the case of
actual  distributions reduce the adjusted tax basis of such Note in the hands of
its holder  (but not below  zero).  Further,  payments  on the Notes  treated as
equity to Non-U.S.  Holders (as  hereinafter  defined) would not be eligible for
the  portfolio  interest  exception  from United  States  withholding  tax,  and
dividends  thereon would be subject to United States  withholding  tax at a flat
rate of 30% (or lower applicable  treaty rate) and gain from their sale or other
taxable disposition might also be subject to United States tax. In addition,  in
the event of equity treatment,  neither GST Network nor GST USA, as the case may
be,  would ever be  entitled to deduct  interest on the Notes for United  States
federal income tax purposes.

                                      -29-

<PAGE>
                               THE EXCHANGE OFFER

PURPOSE AND EFFECT OF THE EXCHANGE OFFER

         The Old Notes were sold by GST Network on May 4, 1998 to the  Placement
Agents,  which  placed the Old Notes with  certain  institutional  investors  in
reliance  on Section  4(2) of,  and Rule 144A  under,  the  Securities  Act.  In
connection  with  the  sale of the Old  Notes,  GST  Network  entered  into  the
Registration  Rights Agreement,  pursuant to which GST Network,  GST USA and GST
agreed to use their best  efforts to  consummate  an offer to  exchange  the Old
Notes for the New Notes  pursuant to an effective  registration  statement on or
before  November  4,  1998.  Unless the  context  requires  otherwise,  the term
"Holder"  with respect to the Exchange  Offer means any person in whose name Old
Notes are  registered  on the books of GST  Network or any other  person who has
obtained a properly  completed  bond power from the  registered  Holder,  or any
person whose Old Notes are held of record by DTC who desires to deliver such Old
Notes by book-entry transfer at DTC.

         GST  Network  has not  requested,  and does not intend to  request,  an
interpretation  by the staff of the  Commission  with respect to whether the New
Notes issued pursuant to the Exchange Offer in exchange for the Old Notes may be
offered  for  sale,  resold  or  otherwise  transferred  by any  Holder  without
compliance  with the  registration  and  prospectus  delivery  provisions of the
Securities  Act. Based upon  interpretations  by the staff of the Commission set
forth in no-action  letters issued to third parties,  GST Network  believes that
New Notes issued pursuant to the Exchange Offer in exchange for Old Notes may be
offered for resale,  resold and otherwise  transferred by any Holder of such New
Notes (other than any such Holder that is an "affiliate" of GST Network, GST USA
or GST within the meaning of Rule 405 under the Securities Act and except in the
case  of  broker-dealers,  as set  forth  below)  without  compliance  with  the
registration and prospectus  delivery provisions of the Securities Act, provided
that  such New Notes  are  acquired  in the  ordinary  course  of such  Holder's
business and such Holder has no arrangement or understanding  with any person to
participate in the distribution of such New Notes. Any Holder who tenders in the
Exchange Offer for the purpose of  participating  in a  distribution  of the New
Notes or who is an affiliate of GST Network, GST USA or GST may not rely on such
interpretation  by  the  staff  of the  Commission  and  must  comply  with  the
registration  and  prospectus  delivery  requirements  of the  Securities Act in
connection  with any  secondary  resale  transaction.  Each  broker-dealer  that
receives New Notes for its own account in exchange for Old Notes, where such Old
Notes  were  acquired  by  such  broker-dealer  as  a  result  of  market-making
activities or other trading activities,  must acknowledge that it will deliver a
prospectus  in  connection  with any  resale  of such New  Notes.  See  "Plan of
Distribution."

         By  tendering  in the  Exchange  Offer,  each  Holder of Old Notes will
represent to GST Network,  GST USA and GST that, among other things, (i) the New
Notes acquired pursuant to the Exchange Offer are being obtained in the ordinary
course of business of the person  receiving such New Notes,  whether or not such
person is such Holder,  (ii) neither the Holder of Old Notes, nor any such other
person,  has an arrangement or  understanding  with any person to participate in
the distribution of such New Notes,  (iii) if the Holder is not a broker-dealer,
or is a  broker-dealer  but will not  receive  New Notes for its own  account in
exchange  for Old Notes,  neither  the  Holder,  nor any such other  person,  is
engaged in or intends to participate in the  distribution  of such New Notes and
(iv)  neither  the  Holder nor any such other  person is an  "affiliate"  of GST
Network,  GST USA or GST within the meaning of Rule 405 under the Securities Act
or, if such  Holder is an  "affiliate,"  that such  Holder  will comply with the
registration and prospectus  delivery  requirements of the Securities Act to the
extent applicable.

         Following the consummation of the Exchange Offer,  Holders of Old Notes
not  tendered  will not have any further  registration  rights and the Old Notes
will continue to be subject to certain  restrictions  on transfer.  Accordingly,
the liquidity of the market for the Old Notes could be adversely affected.

TERMS OF THE EXCHANGE OFFER

         Upon  the  terms  and  subject  to the  conditions  set  forth  in this
Prospectus and in the Letter of Transmittal, GST Network will accept any and all
Old Notes validly  tendered and not withdrawn  prior to 5:00 p.m., New York City
time, on the Expiration Date. Subject to the minimum  denomination  requirements
of the New Notes,  GST Network will issue $1,000 principal amount at maturity of
New  Notes  in  exchange  for  each  $1,000  principal  amount  at  maturity  of
outstanding Old Notes accepted in the Exchange Offer. Holders may tender some or
all of their Old

                                      -30-

<PAGE>
Notes pursuant to the Exchange Offer. However, Old Notes may be tendered only in
integral multiples of $1,000 principal amount at maturity.

         The forms and terms of the New Notes will be  identical in all material
respects to the forms and terms of the corresponding Old Notes,  except that the
offer and sale of the New Notes will have been  registered  under the Securities
Act and, therefore, the New Notes will not bear legends restricting the transfer
thereof.  The  Exchange  Offer is not  conditioned  upon any  minimum  aggregate
principal amount at maturity of Old Notes being tendered for exchange. As of May
31,  1998,  $302.3  million  aggregate  Accreted  Value  of the  Old  Notes  was
outstanding. This Prospectus,  together with the Letter of Transmittal, is being
sent to all Holders as of ________,  1998.  Holders of Old Notes do not have any
appraisal or  dissenters'  rights under the  Indenture  in  connection  with the
Exchange Offer.  GST Network intends to conduct the Exchange Offer in accordance
with the applicable  requirements  of the Exchange Act and the applicable  rules
and regulations of the Commission thereunder.

         GST Network shall be deemed to have accepted validly tendered Old Notes
when,  as and if GST  Network  has given oral or written  notice  thereof to the
Exchange Agent.  The Exchange Agent will act as agent for the tendering  Holders
for the purpose of receiving the New Notes from GST Network. If any tendered Old
Notes are not accepted for exchange because of an invalid tender, the occurrence
of certain other events set forth herein or otherwise, such unaccepted Old Notes
will be returned,  without expense,  to the tendering Holder thereof as promptly
as practicable after the Expiration Date.

         Holders who tender Old Notes in the Exchange Offer will not be required
to pay brokerage  commissions  or fees or,  subject to the  instructions  in the
Letter of Transmittal,  transfer taxes with respect to the exchange of Old Notes
pursuant to the Exchange  Offer.  GST Network will pay all charges and expenses,
other than certain  applicable taxes, in connection with the Exchange Offer. See
" -- Fees and Expenses."

EXPIRATION DATE; EXTENSIONS; AMENDMENTS

         The term "Expiration Date" shall mean 5:00 p.m., New York City time, on
_____________,  1998 [20 BUSINESS  DAYS AFTER THE  COMMENCEMENT  OF THE EXCHANGE
OFFER],  unless GST Network in its sole discretion,  extends the Exchange Offer,
in which case the term "Expiration  Date" shall mean the latest date and time to
which the  Exchange  Offer is  extended.  Although  GST  Network  has no current
intention to extend the Exchange Offer, GST Network reserves the right to extend
the  Exchange  Offer at any time and from time to time by giving oral or written
notice to the Exchange  Agent and by timely  public  announcement  communicated,
unless otherwise  required by applicable law or regulation,  by making a release
to the Dow Jones News Service.  During any extension of the Exchange Offer,  all
Old Notes previously  tendered  pursuant to the Exchange Offer and not withdrawn
will remain subject to the Exchange  Offer.  The date of the exchange of the New
Notes for Old  Notes  will be the  first  Nasdaq  National  Market  trading  day
following the Expiration Date.

         GST Network expressly  reserves the right to (i) terminate the Exchange
Offer and not accept for  exchange  any Old Notes if any of the events set forth
below under " -- Conditions to the Exchange Offer" shall have occurred and shall
not have been  waived by GST  Network  and (ii) amend the terms of the  Exchange
Offer in any manner that, in its good faith  judgment,  is  advantageous  to the
Holders of the Old Notes, whether before or after any tender of the Old Notes.

PROCEDURES FOR TENDERING

         The tender to GST Network of Old Notes by a Holder thereof  pursuant to
one of the procedures set forth below will constitute an agreement  between such
Holder  and GST  Network  in  accordance  with  the  terms  and  subject  to the
conditions  set forth  herein  and in the Letter of  Transmittal  signed by such
holder.  A Holder  of the Old Notes may  tender  such Old Notes by (i)  properly
completing  and  signing a Letter of  Transmittal  or a facsimile  thereof  (all
references  in this  Prospectus  to a Letter of  Transmittal  shall be deemed to
include  a  facsimile  thereof)  and  delivering  the  same,  together  with any
corresponding  certificate  or  certificates  representing  the Old Notes  being
tendered (if in certificated form) and any required signature guarantees, to the
Exchange Agent at its address set forth in the Letter of Transmittal on or prior
to the Expiration Date (or complying with the procedure for book-entry  transfer
described  below) or (ii)  complying  with the  guaranteed  delivery  procedures
described below.

                                      -31-

<PAGE>
         If tendered Old Notes are  registered  in the name of the signer of the
Letter of Transmittal and the New Notes to be issued in exchange therefor are to
be issued (and any  untendered  Old Notes are to be reissued) in the name of the
registered holder (which term, for the purposes described herein,  shall include
any participant in DTC whose name appears on a security  listing as the owner of
Old Notes),  the signature of such signer need not be  guaranteed.  In any other
case,  the  tendered  Old Notes  must be  endorsed  or  accompanied  by  written
instruments of transfer in form satisfactory to GST Network and duly executed by
the  registered  Holder and the  signature on the  endorsement  or instrument of
transfer must be guaranteed by a member firm of a registered national securities
exchange  or  of  the  National  Association  of  Securities  Dealers,  Inc.,  a
commercial bank or trust company having an office or correspondent in the United
States or an "eligible  guarantor  institution" as defined by Rule 17Ad-15 under
the Exchange Act (any of the foregoing  hereinafter  referred to as an "Eligible
Institution").  If the New Notes  and/or the Old Notes not  exchanged  are to be
delivered to an address other than that of the  registered  Holder  appearing on
the register for the Old Notes,  the signature in the Letter of Transmittal must
be guaranteed by an Eligible Institution.

         THE METHOD OF  DELIVERY  OF OLD NOTES,  LETTER OF  TRANSMITTAL  AND ALL
OTHER  DOCUMENTS IS AT THE ELECTION AND RISK OF THE HOLDER.  IF SUCH DELIVERY IS
BY MAIL, IT IS RECOMMENDED THAT REGISTERED MAIL,  PROPERLY INSURED,  WITH RETURN
RECEIPT REQUESTED,  BE USED. IN ALL CASES,  SUFFICIENT TIME SHOULD BE ALLOWED TO
ASSURE TIMELY DELIVERY.  NO LETTER OF TRANSMITTAL OR OLD NOTES SHOULD BE SENT TO
GST NETWORK.

         GST Network  understands  that the  Exchange  Agent will make a request
promptly after the date of this  Prospectus to establish an account with respect
to the Old Notes at DTC for the purpose of facilitating  the Exchange Offer, and
subject  to the  establishment  thereof,  any  financial  institution  that is a
participant in DTC's system may make book-entry delivery of Old Notes by causing
DTC to transfer such Old Notes into the Exchange Agent's account with respect to
the Old Notes in accordance  with DTC's  procedure for such  transfer.  Although
delivery of the Old Notes may be effected through  book-entry  transfer into the
Exchange  Agent's account at DTC, an appropriate  Letter of Transmittal with any
required  signature  guarantee and all other revised documents must in each case
be transmitted to and received or confirmed by the Exchange Agent at the address
set forth in the Letter of Transmittal  on or prior to the Expiration  Date, or,
if the guaranteed delivery procedures  described below are complied with, within
the time period provided under such procedures.

         If the Holder  desires to accept the  Exchange  Offer and time will not
permit a Letter of  Transmittal  or Old Notes to reach the Exchange Agent before
the Expiration Date or the procedure for book-entry transfer cannot be completed
on a timely basis,  a tender may be effected if the Exchange  Agent has received
at its  office,  on or prior to the  Expiration  Date,  a  letter,  telegram  or
facsimile  transmission from an Eligible  Institution setting forth the name and
address  of the  tendering  Holder,  the  name(s)  in which  the Old  Notes  are
registered and the  certificate  number(s) of the Old Notes to be tendered,  and
stating  that the tender is being made  thereby and  guaranteeing  that,  within
three Nasdaq  National  Market  trading days after the date of execution of such
letter, telegram or facsimile transmission by the Eligible Institution, such Old
Notes, in proper form for transfer (or a confirmation of book-entry  transfer of
such Old Notes into the Exchange  Agent's  account at DTC), will be delivered by
such Eligible  Institution  together with a properly completed and duly executed
Letter of Transmittal (and any other required documents). Unless Old Notes being
tendered by the  above-described  method are deposited  with the Exchange  Agent
within the time  period set forth above  (accompanied  or preceded by a properly
completed Letter of Transmittal and any other required  documents),  GST Network
may,  at its  option,  reject  the  tender.  Copies  of a Notice  of  Guaranteed
Delivery,  which may be used by Eligible Institutions for the purposes described
in this paragraph, are available from the Exchange Agent.

         A tender  will be deemed to have been  received as of the date when (i)
the tendering  Holder's properly completed and duly signed Letter of Transmittal
accompanied by the Old Notes (or a confirmation  of book-entry  transfer of such
Old Notes into the Exchange Agent's account at DTC), is received by the Exchange
Agent or (ii) a Notice of Guaranteed  Delivery or letter,  telegram or facsimile
transmission to similar effect (as provided above) from an Eligible  Institution
is received by the  Exchange  Agent.  Issuances of New Notes in exchange for Old
Notes tendered pursuant to a Notice of Guaranteed  Delivery or letter,  telegram
or facsimile transmission to similar effect

                                      -32-

<PAGE>
(as  provided  above)  by an  Eligible  Institution  will be made  only  against
submission  of a duly  signed  Letter of  Transmittal  (and any  other  required
documents) and deposit of the tendered Old Notes.

         All questions as to the validity,  form, eligibility (including time of
receipt)  and  acceptance  for  exchange  of any  tender  of Old  Notes  will be
determined by GST Network,  whose  determination will be final and binding.  GST
Network  reserves the absolute  right to reject any or all tenders not in proper
form or the  acceptance  for  exchange  of  which  may,  in the  opinion  of GST
Network's counsel, be unlawful.  GST Network also reserves the absolute right to
waive any of the conditions of the Exchange Offer or any defect or  irregularity
in the tender of any Old Notes.  None of GST Network,  the Exchange Agent or any
other  person  will be under any duty to give  notification  of any  defects  or
irregularities  in tenders or will incur any  liability  for failure to give any
such  notification.  Any Old Notes  received by the Exchange  Agent that are not
validly  tendered  and as to which the defects or  irregularities  have not been
cured or waived, or if Old Notes are submitted in an aggregate  principal amount
at maturity greater than the aggregate principal amount at maturity of Old Notes
being tendered by such tendering Holder,  will be returned by the Exchange Agent
to  the  tendering   holders,   unless  otherwise  provided  in  the  Letter  of
Transmittal, as soon as practicable following the Expiration Date.

         In addition,  GST Network reserves the right in its sole discretion (i)
to purchase or make offers for any Old Notes that remain outstanding  subsequent
to the Expiration  Date and (ii) to the extent  permitted by applicable  law, to
purchase Old Notes in the open market, in privately  negotiated  transactions or
otherwise.  The terms of any such purchases or offers will differ from the terms
of the Exchange Offer.

TERMS AND CONDITIONS OF THE LETTER OF TRANSMITTAL

         The Letter of Transmittal  contains,  among other things, the following
terms and conditions, which are part of the Exchange Offer.

         The  party   tendering  Old  Notes  for  exchange  (the   "Transferor")
exchanges,  assigns and transfers  the Old Notes to GST Network and  irrevocably
constitutes  and  appoints  the  Exchange  Agent as the  Transferor's  agent and
attorney-in-fact  to  cause  the  Old  Notes  to be  assigned,  transferred  and
exchanged.  The  Transferor  represents  and warrants that it has full power and
authority to tender, exchange,  assign and transfer the Old Notes and to acquire
New Notes issuable upon the exchange of such tendered Old Notes,  and that, when
the  same  are  accepted  for  exchange,  GST  Network  will  acquire  good  and
unencumbered  title to the  tendered  Old  Notes,  free and clear of all  liens,
restrictions, charges and encumbrances and not subject to any adverse claim. The
Transferor  also  warrants that it will,  upon request,  execute and deliver any
additional  documents  deemed by GST Network to be  necessary  or  desirable  to
complete the exchange, assignment and transfer of tendered Old Notes or transfer
ownership  of such  Old  Notes  on the  account  books  maintained  by DTC.  All
authority  conferred by the  Transferor  will survive the death,  bankruptcy  or
incapacity of the  Transferor  and every  obligation of the  Transferor  will be
binding upon the heirs, legal representatives,  successors,  assigns,  executors
and administrators of such Transferor.

         By  executing  a Letter of  Transmittal,  each  Holder will make to GST
Network, GST USA and GST the representations set forth above under the heading "
- -- Purpose and Effect of the Exchange Offer."

WITHDRAWAL OF TENDERS

         Tenders of Old Notes  pursuant to the Exchange  Offer are  irrevocable,
except that Old Notes  tendered  pursuant to the Exchange Offer may be withdrawn
at any time prior to 5:00 p.m., New York City time, on the Expiration Date.

         To be  effective,  a written,  telegraphic  or  facsimile  transmission
notice  of  withdrawal  must be timely  received  by the  Exchange  Agent at the
address set forth in the Letter of Transmittal prior to 5:00 p.m., New York City
time on the  Expiration  Date.  Any such notice of  withdrawal  must specify the
holder  named in the Letter of  Transmittal  as having  tendered Old Notes to be
withdrawn, the certificate numbers and designation of Old Notes to be withdrawn,
the principal amount of Old Notes delivered for exchange,  a statement that such
Holder is  withdrawing  his election to have such Old Notes  exchanged,  and the
name of the  registered  Holder  of such Old  Notes,  and must be  signed by the
Holder in the same manner as the original signature on the Letter of Transmittal

                                      -33-

<PAGE>
(including  any required  signature  guarantees)  or be  accompanied by evidence
satisfactory to GST Network that the person withdrawing the tender has succeeded
to the beneficial ownership of the Old Notes being withdrawn. The Exchange Agent
will return the  properly  withdrawn  Old Notes  promptly  following  receipt of
notice of withdrawal.  If Old Notes have been tendered pursuant to the procedure
for  book-entry  transfer,  any notice of  withdrawal  must specify the name and
number of the  account at DTC to be  credited  with the  withdrawn  Old Notes or
otherwise comply with DTC procedure. All questions as to the validity of notices
of withdrawal, including time of receipt, will be determined by GST Network, and
such determination will be final and binding on all parties.

CONDITIONS TO THE EXCHANGE OFFER

         Notwithstanding  any other  provision  of the  Exchange  Offer,  or any
extension of the Exchange  Offer,  GST Network will not be required to issue New
Notes in exchange for any properly  tendered Old Notes not theretofore  accepted
and may terminate  the Exchange  Offer,  or, at its option,  modify or otherwise
amend the Exchange Offer, if either of the following events occur:

         (i) any statute,  rule or regulation  shall have been  enacted,  or any
         action  shall  have been taken by any court or  governmental  authority
         which,  in the  reasonable  judgment of GST  Network,  would  prohibit,
         restrict or  otherwise  render  illegal  consummation  of the  Exchange
         Offer, or

         (ii) there shall occur a change in the  current  interpretation  by the
         staff of the Commission  which, in GST Network's  reasonable  judgment,
         might  materially  impair GST  Network's  ability  to proceed  with the
         Exchange Offer.

         GST Network  expressly  reserves  the right to  terminate  the Exchange
Offer and not accept for exchange any Old Notes upon the occurrence of either of
the foregoing  conditions (which represent all of the material conditions to the
acceptance by GST Network of properly tendered Old Notes).

         The  foregoing  conditions  are for the sole benefit of GST Network and
may be waived by GST Network, in whole or in part, in its reasonable discretion.
The foregoing conditions must be either satisfied or waived prior to termination
of the Exchange  Offer.  Any  determination  made by GST Network  concerning  an
event,  development or circumstance described or referred to above will be final
and binding on all parties.

EXCHANGE AGENT

         United States Trust Company of New York has been  appointed as Exchange
Agent for the Exchange Offer.  Questions and requests for  assistance,  requests
for additional  copies of this  Prospectus or of the Letter of  Transmittal  and
requests for Notices of Guaranteed  Delivery  should be directed to the Exchange
Agent addressed as follows:

BY MAIL (REGISTERED OR CERTIFIED MAIL RECOMMENDED):

         United States Trust Company of New York
         P.O. Box 844
         Cooper Station
         New York, New York 10276-0844


BY OVERNIGHT COURIER:

         United States Trust Company of New York
         770 Broadway, 13th Floor
         Corporate Trust Operations Department
         New York, New York 10003


BY HAND DELIVERY:

         United States Trust Company of New York
         111 Broadway, Lower Level
         New York, New York 10006
         Attn: Corporate Trust Services


                                      -34-

<PAGE>

BY FACSIMILE:     (212) 780-0592 Confirm by Telephone: (800) 548-6565

                  (For Eligible Institutions Only)

FEES AND EXPENSES

         The expense of  soliciting  tenders will be borne by GST  Network.  The
principal solicitation is being made by mail; however,  additional solicitations
may be made by telegraph,  telephone or other means of electronic  communication
or in  person  by  officers  and  regular  employees  of  GST  Network  and  its
affiliates.  No  additional  compensation  will be paid to any such officers and
employees who engage in soliciting tenders.

         GST Network has not retained  any  dealer-manager  or other  soliciting
agent in  connection  with the Exchange  Offer and will not make any payments to
brokers,  dealers or others  soliciting  acceptances of the Exchange Offer.  GST
Network,  however, will pay the Exchange Agent reasonable and customary fees for
its services and will reimburse it for its reasonable  out-of-pocket expenses in
connection  therewith.  GST  Network  may also pay  brokerage  houses  and other
custodians,  nominees and  fiduciaries  the  reasonable  out-of-pocket  expenses
incurred  by  them in  forwarding  copies  of this  Prospectus,  the  Letter  of
Transmittal and related  documents to the beneficial owners of the Old Notes and
in handling or forwarding tenders for exchange.

         The  expenses to be incurred in  connection  with the  Exchange  Offer,
including fees and expenses of the Exchange Agent and Trustee and accounting and
legal fees of GST Network, will be paid by GST Network.

         GST Network  will pay all transfer  taxes,  if any,  applicable  to the
exchange of Old Notes pursuant to the Exchange Offer. If, however, New Notes, or
Old Notes for principal amounts not tendered or accepted for exchange, are to be
delivered  to, or are to be issued in the name of,  any  person  other  than the
registered  Holder of the Old Notes tendered or if a transfer tax is imposed for
any reason other than the exchange of Old Notes pursuant to the Exchange  Offer,
then the amount of any such transfer  taxes  (whether  imposed on the registered
Holder or any  other  persons)  will be  payable  by the  tendering  Holder.  If
satisfactory  evidence of payment of such taxes or  exemption  therefrom  is not
submitted with the Letter of Transmittal, the amount of such transfer taxes will
be billed directly to such tendering Holder.

ACCOUNTING TREATMENT

         The New Notes will be  recorded at the same  carrying  value as the Old
Notes  as  reflected  in GST  Network's  accounting  records  on the date of the
exchange  because  the  exchange  of the Old  Notes  for the  New  Notes  is the
completion of the selling process contemplated in the issuance of the Old Notes.
Accordingly,  no gain or loss for accounting  purposes will be  recognized.  The
expenses  of the  Exchange  Offer and the  unamortized  expenses  related to the
issuance of the Old Notes will be amortized over the term of the New Notes.

OTHER

         Participation  in the Exchange  Offer is voluntary  and Holders  should
carefully  consider  whether  to  accept.  Holders of the Old Notes are urged to
consult  their  financial and tax advisors in making their own decisions on what
action to take.

         No person has been  authorized to give any  information  or to make any
representations in connection with the Exchange Offer other than those contained
in this Prospectus. If given or made, such information or representations should
not be relied upon as having been  authorized  by GST  Network,  GST USA or GST.
Neither the delivery of this  Prospectus nor any exchange made hereunder  shall,
under any  circumstances,  shall create any  implication  that there has been no
change in the affairs of GST Network,  GST USA or GST since the respective dates
as of which information is given herein. The Exchange Offer is not being made to
(nor will tenders be accepted  from or on behalf of) Holders of Old Notes in any
jurisdiction in which the making of the Exchange Offer or the acceptance thereof
would not be in  compliance  with the laws of such  jurisdiction.  However,  GST
Network  may, at its  discretion,  take such action as it may deem  necessary to
make the Exchange Offer in any such  jurisdiction  and extend the Exchange Offer
to Holders of Old Notes in such jurisdiction.

                                      -35-

<PAGE>
         As a result of the making of the Exchange Offer,  GST Network,  GST USA
and GST will have  fulfilled a covenant  contained  in the  Registration  Rights
Agreement.  Holders  of the Old Notes who do not  tender  their Old Notes in the
Exchange  Offer will continue to hold such Old Notes and will be entitled to all
the rights and limitations applicable thereto under the Indenture except for any
such rights  under the  Registration  Rights  Agreement  and except that the Old
Notes will not be entitled to the contingent  increase in interest rate provided
for in the Old Notes.  All  untendered  Old Notes will continue to be subject to
the  restrictions  on transfer set forth in the Indenture and the Old Notes.  To
the extent that Old Notes are tendered and accepted in the Exchange  Offer,  the
trading market, if any, for untendered Old Notes could be adversely affected.

                                 USE OF PROCEEDS

         GST Network will not receive any cash proceeds from the issuance of the
New  Notes  offered  hereby.  In  consideration  for  issuing  the New  Notes as
contemplated in this Prospectus,  GST Network will receive in exchange Old Notes
in like  principal  amount,  the terms of which are  identical  in all  material
respects to the New Notes, except that the offer and sale of such New Notes will
be registered  under the  Securities Act and,  therefore,  will not bear legends
restricting  the transfer  thereof.  Old Notes  surrendered  in exchange for New
Notes will be retired and canceled and cannot be reissued. Accordingly, issuance
of the New Notes will not result in a change in the indebtedness of GST Network.

         The net proceeds  received by GST Network  from the May  Offering  were
approximately $288.9 million. GST Network intends to use the net proceeds of the
May Offering to finance the cost  (including,  without  limitation,  the cost of
design, development, construction,  acquisition, installation or integration) of
Acquired Equipment for the continued expansion of the Company's  infrastructure,
including the development and  construction of additional  networks and longhaul
fiber  optic  facilities;   provided  that  the  cost  of  design,  development,
construction,  installation and integration of the Acquired  Equipment shall not
exceed 50% of the aggregate Acquired Equipment Cost. GST Network will thereafter
sell such  Acquired  Equipment  to GST USA for  Intercompany  Notes equal to the
Acquired Equipment Cost.

                                      -36-

<PAGE>
                             SELECTED FINANCIAL DATA

GST NETWORK

         The selected  financial  data set forth below for the period from April
16,  1998 (date of  inception)  to May 31,  1998 is derived  from the  unaudited
financial  statements of GST Network. The selected financial data should be read
in conjunction with "Management's Discussion and Analysis of Financial Condition
and Results of  Operations"  and the financial  statements and the notes thereto
included elsewhere in this Prospectus.


                                               Period from April 16, 1998 (date
                                                of inception) to May 31, 1998
                                                     (in thousands)
                                               ---------------------------------



STATEMENT OF OPERATIONS DATA:

Interest income....................................... $1,075

Commitment fee income.................................  1,688

Interest expense......................................  2,472

Income tax expense....................................    939
                                                      -------

Net loss..............................................  (648)
                                                      =======




                                                      May 31, 1998
                                                      -------------


BALANCE SHEET DATA (AT END OF PERIOD):

Restricted cash and investments........................$292,570

Total assets........................................... 305,173

Long term debt......................................... 302,282

Common shares and additional paid-in-capital...........   2,000

Accumulated deficit....................................    (648)
                                                       ---------

Shareholder's equity......................................1,352


                                      -37-

<PAGE>
GST USA

         The selected  financial  data set forth below for Fiscal  1994,  Fiscal
1995,  Fiscal 1996, Fiscal 1997 and the 1997 Three Month Period are derived from
the audited  consolidated  financial  statements  of the GST USA.  The  selected
consolidated  financial data for the three months ended December 31, 1996, March
31, 1997 and 1998 is unaudited, but in the opinion of the management of GST USA,
reflects  all  adjustments  (consisting  only of normal  recurring  adjustments)
necessary  for a fair  presentation  of results for interim  periods.  Operating
results for  interim  periods are not  necessarily  indicative  of results to be
expected for the full fiscal  year.  The selected  consolidated  financial  data
should be read in  conjunction  with  "Management's  Discussion  and Analysis of
Financial Condition and Results of Operations" and the financial  statements and
the notes thereto incorporated by reference in this Prospectus.

<TABLE>
<CAPTION>

                                Thirteen
                                 Months                   Year Ended                   Three Months Ended       Three Months Ended
                                  Ended                 September 30,                     December 31,              March 31,
                                September   ------------------------------------ ---------------------------------------------------
                                   30
                                 1994(a)        1995       1996(b)      1997(b)      1996(b)        1997(b)     1997(b)      1998
                               ----------   ------------  ---------  ----------- --------------  -----------------------------------
                                                                                 (in thousands)

STATEMENT OF OPERATIONS DATA:
Revenues:
<S>                            <C>         <C>            <C>        <C>           <C>            <C>         <C>        <C>
 Telecommunication and other   
 services....................  $   112     $ 11,118       $ 31,726   $ 80,234      $ 18,437       $ 25,940    $ 19,621   $ 27,522
 Telecommunication products..    5,889        7,563          9,573     21,982         4,780          7,300       5,073          0
                               -------      -------      ---------    -------       -------        -------     -------    -------
   Total revenues............    6,001       18,681         41,299    102,216        23,217         33,240      24,694     27,522
Operating loss................    (975)     (10,261)       (40,116)   (76,424)      (17,432)       (20,930)    (17,312)   (23,533)
Other expenses (income):
 Interest income..............     (89)        (241)        (4,927)    (6,315)         (693)        (4,077)       (383)    (4,909)
 Interest expense(c)..........      27          805         18,334     34,168         4,646         15,853       4,513     15,430
 Other, net...................   1,877          820          2,289     (7,237)           81            139      (7,492)   (61,248)
Income tax expense............     502(d)       166(d)         157        903             0            850         118          0
                                --------   ----------      --------   --------      --------       --------    --------   --------
Net income (loss)(e).......... $(3,492)     $(9,447)      $(55,558)  $(98,555)     $(21,413)      $(34,167)   $(14,108)   $ 27,194
                               ========     ========      =========  =========     =========      =========   =========   ========
Ratio of earnings to fixed          
charges(f)...................       --           --             --         --            --             --          --          --

OTHER DATA:
Capital expenditures..........  $ 1,429    $ 33,905       $ 97,561   $225,743      $ 58,047       $ 46,663    $ 62,543    $ 41,760
EBITDA(g)...................... $  (591)   $ (7,532)      $(31,462)  $(50,257)     $(12,661)      $(11,809)   $(12,743)   $(14,271)

BALANCE SHEET DATA (AT END OF
PERIOD):
Cash, cash equivalents and
investments....................  $1,310    $  3,894       $ 46,717   $ 57,943                     $204,927                $237,025
Restricted cash and investments      --          --         16,000    171,750                      144,450                 135,197
Property and equipment.........   4,593      39,556        134,274    384,549                      433,110                 472,241
Accumulated depreciation.......    (222)     (1,545)        (6,777)   (20,620)                     (26,670)                (31,456)
Investment in joint ventures(h)   3,552       2,859          1,364          0                            0                       0
Total assets...................  18,887      71,421        277,673    710,875                      879,016                 929,493
Current portion of long-term de
  and capital lease obligationsbt   134         745          5,346      9,284                        9,498                   7,818
Long term debt and capital leas
  obligations (excluding current
  portion).....................      --      19,495        211,907    601,280                      605,807                 615,316
Common Shares..................  16,340      47,909         69,957     78,373                       78,462                  78,462
Accumulated deficit............  (3,678)    (13,125)       (68,683)  (167,238)                    (201,405)               (174,211)
Shareholders' equity...........  12,662      34,784          1,274    (88,865)                    (122,943)                (95,749)
</TABLE>

                                      -38-
<PAGE>
- --------------------
(a)      GST USA was formed in August 1994 at which time the Company transferred
         all  operating  subsidiaries  to GST USA.  The  consolidated  financial
         statements as of and for the thirteen  months ended  September 30, 1994
         reflect the results of operations, financial position and cash flows of
         the operating subsidiaries using the "as if" pooling of interests basis
         of  accounting,  as the entities were under common  control  during the
         period.

(b)      Effective  January 1, 1998, the Company  transferred  GST Call America,
         Inc.   ("GST  Call   America")   and  TotalNet   Communications,   Inc.
         ("TotalNet"),   previously  direct  wholly-owned  subsidiaries  of  the
         Company,  to GST USA.  The  financial  results  have been  restated  to
         reflect the  operations of GST Call America and TotalNet from the dates
         such subsidiaries  were acquired by the Company.  The financial results
         have been restated in order to conform with the Company's  presentation
         as the entities are under common control.

(c)      Excludes  capitalized  interest  of $291 for  Fiscal  1995,  $2,316 for
         Fiscal 1996,  $15,170 for Fiscal 1997,  $2,549 for the 1996 Three Month
         Period,  $3,726 for the 1997 Three Month  Period,  $3,648 for the three
         months ended March 31, 1997 and $4,848 for the three months ended March
         31, 1998.  During the construction of GST USA's networks,  the interest
         costs related to construction  expenditures are considered to be assets
         qualifying  for interest  capitalization  under FASB  Statement  No. 34
         "Capitalization of Interest Cost."

(d)      During  Fiscal 1994 and the first eight months of Fiscal 1995,  GST USA
         owned less than 80% of GST Telecom and was  therefore  unable to deduct
         for tax purposes the losses incurred by GST Telecom.

(e)      Includes minority interest in (income) loss of subsidiaries of ($2) for
         Fiscal 1994,  $2,364 for Fiscal 1995, $411 for Fiscal 1996,  $(612) for
         Fiscal 1997,  $53 for the 1996 Three Month Period,  $(472) for the 1997
         Three Month Period, $(40) for the three months ended March 31, 1997 and
         $0 for the three months ended March 31, 1998.

(f)      The ratio of earnings to fixed  charges is computed by dividing  pretax
         income from  continuing  operations  before fixed  charges  (other than
         capitalized  interest)  by fixed  charges.  Fixed  charges  consist  of
         interest  charges and  amortization  of debt  expense  and  discount or
         premium related to  indebtedness,  whether  expensed or capitalized and
         that   portion  of  rental   expense   the   Company   believes  to  be
         representative of interest.  For Fiscal 1994, Fiscal 1995, Fiscal 1996,
         Fiscal 1997, the 1996 Three Month Period,  the 1997 Three Month Period,
         the three  months ended March 31, 1997 and the three months ended March
         31, 1998,  earnings  were  insufficient  to cover fixed charges by $2.8
         million, $11.9 million,  $58.1 million,  $119.6 million, $24.0 million,
         $36.6 million, $25.0 million and $38.9 million, respectively.

(g)      EBITDA consists of loss before interest, income taxes, depreciation and
         amortization and other income and noncash  expense.  EBITDA is provided
         because it is a measure commonly used in the industry.  It is presented
         to enhance an understanding  of GST USA's operating  results and is not
         intended to represent  cash flow or results of operations in accordance
         with  generally   accepted   accounting   principles  for  the  periods
         indicated.

(h)      Represents principally GST USA's then 50% ownership interest in Phoenix
         Fiber, the owner and operator of the Phoenix network.  GST USA acquired
         the remaining 50% interest in Phoenix Fiber  effective as of October 1,
         1996.

                                      -39-

<PAGE>
THE COMPANY

         The  selected  consolidated  financial  data set forth below for Fiscal
1994,  Fiscal 1995, Fiscal 1996, Fiscal 1997 and the 1997 Three Month Period are
derived from the audited  consolidated  financial statements of the Company. The
selected  consolidated  financial  data for the 1996 Three Month  Period and the
three months ended March 31, 1997 and 1998 is  unaudited,  but in the opinion of
the  management of the Company,  reflects all  adjustments  (consisting  only of
normal recurring  adjustments)  necessary for a fair  presentation of such data.
The selected  consolidated  financial  data should be read in  conjunction  with
"Management's  Discussion  and  Analysis of Financial  Condition  and Results of
Operations" and the financial  statements and the notes thereto  incorporated by
reference in this Prospectus.  The selected consolidated financial data includes
information  with  respect to NACT.  In  February  1998,  the  Company  sold its
remaining 63% interest in NACT in the NACT Sale.

<TABLE>
<CAPTION>

                                THIRTEEN MONTHS            YEAR ENDED                THREE MONTHS ENDED      THREE MONTHS ENDED
                                ENDED SEPTEMBER           SEPTEMBER 30,                 DECEMBER 31,             MARCH 31,
                                     30,        --------------------------------    --------------------    --------------------
                                   1994(A)      1995           1996      1997        1996        1997(A)       1997       1998
                                   -------      ----           ----      ----        ----        -------       ----       ----
                                                         (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
STATEMENT OF OPERATIONS DATA:
Revenues:
<S>                               <C>         <C>           <C>        <C>         <C>          <C>          <C>         <C>     
  Telecommunication and other
       services...............    $   112     $ 11,118      $ 31,726   $  82,593   $  18,437    $  27,552    $ 19,619    $ 29,180
  Telecommunication products..      5,889        7,563         9,573      23,374       4,780        8,706       5,073         864
                                  -------     --------      --------   ---------   ---------    ---------   ---------    --------
       Total revenues.........      6,001       18,681        41,299     105,967      23,217       36,258      24,692      30,044
Operating loss..................   (1,337)     (11,631)      (42,597)    (86,543)    (17,988)     (21,855)    (17,708)    (24,807)
Other expenses (income):
  Interest income.............       (254)        (303)       (5,549)     (7,026)       (839)      (4,101)       (538)     (4,935)
  Interest expense(b).........         27          838        21,224      37,665       5,434       18,948       5,384      21,275
  Other, net..................      1,877        1,347         2,360      (5,359)        104        1,569      (6,928)    (60,635)
Income tax expense..............      502(c)       166(c)        157         903          --          850         118           0
                                  -------      -------      --------   ---------    --------    ---------   ---------     -------
Net income (loss)(d)............  $(3,491)    $(11,315)    $(60,378)  $(113,338)  $ (22,634)    $ (39,593)  $ (15,784)    $19,488
                                  =======      ========     ========   =========   =========    =========   =========     ========
Net income (loss) per share:
  Basic(e)....................    $  (.35)    $   (.82)    $  (3.18)  $   (4.71)  $   (1.02)    $   (1.39)  $   (0.68)    $   0.56
                                  =======     =========    =========  ==========  ==========   ==========  ==========      =======
  Diluted(e)..................    $  (.35)    $   (.82)    $  (3.18)  $   (4.71)  $   (1.02)    $   (1.39)  $   (0.68)    $   0.46
                                  =======     =========    =========  ==========  ==========   ==========   ==========      =======
Weighted average number of
 Common Shares outstanding:
   Basic.......................     9,879       13,781       18,988      24,703      22,237        30,804      23,158       35,035
   Diluted.....................     9,879       13,781       18,988      24,703      22,237        30,804      23,158       44,715
OTHER DATA:
Capital expenditures............  $ 1,486     $ 33,922     $ 97,561   $ 225,743   $  58,047     $  46,663   $  62,543     $ 41,760
EBITDA(f).......................     (779)      (8,807)     (33,936)    (51,881)    (13,208)      (12,032)    (13,137)     (14,820)
Ratio of earnings to fixed
 charges(g).....................        -            -            -           -           -             -           -            -
BALANCE SHEET DATA (AT END OF
    PERIOD):
Cash, cash equivalents and
  investments...................  $ 5,062     $  6,895     $ 66,519   $  59,184                $ 206,672                  $240,277
Restricted cash and investments.       --           --       16,000     171,750                  144,450                   135,197
Property and equipment..........    4,805       39,583      134,714     385,252                  433,680                   472,290
Accumulated depreciation........     (221)      (1,550)      (7,139)    (20,738)                 (26,785)                  (31,630)
Investment in joint
  ventures(h)...................    3,552        2,859        1,364          --          --           --                        --
Total assets....................   26,769       73,125      301,701     728,405                  898,174                   948,121
Current portion of long-term
  debt and capital lease
  obligations...................       --          959        5,554      10,656                   10,865                     9,181
Long term debt and capital
  lease obligations (excluding
 current portion)...............       --       19,746      234,127     628,043                  777,286                   787,686
Redeemable Preferred Shares.....       --           --           --      51,756                   54,635                    54,635
Common Shares and commitment
    to issue Common Shares(i)...   25,075       51,660       98,101     149,880                  221,709                   239,914
Accumulated deficit.............   (4,640)     (15,955)     (76,333)   (189,671)                (229,264)                 (209,776)
Shareholders' equity (deficit)..   20,435       35,705       21,768     (39,791)                  (7,555)                   30,138
</TABLE>

                                      -40-

<PAGE>
- -------------------
(a)      The Company  changed its fiscal year end to September 30,  effective in
         1994.  As a result,  amounts  reported  for Fiscal  1994 are for the 13
         months ended  September  30, 1994.  Results for Fiscal 1994 include the
         acquisition of 60% of GST Telecom, the Company's subsidiary that is the
         owner and operator of each of the Company's  networks,  and, at various
         times  during  Fiscal 1994,  an  aggregate of 80% of NACT.  The Company
         changed  its fiscal  year end from  September  30th to  December  31st,
         effective  in  1998,  in  order  to  align  financial   reporting  with
         regulatory  reporting  and to the  reporting of others in the Company's
         industry sector.

(b)      Excludes  capitalized  interest of $.3 million  for Fiscal  1995,  $2.3
         million for Fiscal 1996,  $15.2  million for Fiscal 1997,  $2.5 million
         for the 1996 Three Month Period,  $3.7 million for the 1997 Three Month
         Period,  $3.6  million for the three month  period ended March 31, 1997
         and $4.8  million for the three  month  period  ended  March 31,  1998.
         During the construction of the Company's  networks,  the interest costs
         related  to  construction  expenditures  are  considered  to be  assets
         qualifying  for interest  capitalization  under FASB  Statement  No. 34
         "Capitalization of Interest Cost."

(c)      During  Fiscal  1994 and the first  eight  months of Fiscal  1995,  the
         Company owned less than 80% of GST Telecom and was therefore  unable to
         deduct for tax purposes the losses incurred by GST Telecom.

(d)      Includes  minority  interest in (income) loss of subsidiaries of $0 for
         Fiscal 1994, $2.4 million for Fiscal 1995, $.4 million for Fiscal 1996,
         $(.6) million Fiscal 1997, $.1 million for the 1996 Three Month Period,
         $(.5) million for the 1997 Three Month Period,  $0 for the three months
         ended March 31, 1997 and $0 for the three months ended March 31, 1998.

(e)      Net loss per share also reflects the accretion of the  liquidation  and
         redemption prices of the outstanding  Series A Preference Shares of GST
         (the "Redeemable  Preferred  Shares")  totaling $3.0 million for Fiscal
         1997 and $3.1 million for the 1997 Three Month Period.

(f)      EBITDA consists of loss before interest, income taxes, depreciation and
         amortization,  other  income and non-cash  expense.  EBITDA is provided
         because it is a measure commonly used in the industry.  It is presented
         to enhance an understanding of the Company's  operating  results and is
         not  intended  to  represent  cash flow or  results  of  operations  in
         accordance  with  generally  accepted  accounting  principles  for  the
         periods indicated.

(g)      The ratio of earnings to fixed  charges is computed by dividing  pretax
         income from  continuing  operations  before fixed  charges  (other than
         capitalized  interest)  by fixed  charges.  Fixed  charges  consist  of
         interest  charges and  amortization  of debt  expense  and  discount or
         premium related to indebtedness,  whether expensed or capitalized,  and
         that   portion  of  rental   expense   the   Company   believes  to  be
         representative of interest.  For Fiscal 1995, Fiscal 1996, Fiscal 1997,
         the 1996 Three Month  Period,  the 1997 Three Month  Period,  the three
         months  ended March 31, 1997 and the three months ended March 31, 1998,
         earnings were  insufficient  to cover fixed  charges by $13.8  million,
         $62.9 million,  $134.4  million,  $25.2 million,  $42.0 million,  $26.7
         million and $46.7 million, respectively.

(h)      Represents  principally  the Company's  then 50% ownership  interest in
         Phoenix Fiber Access, Inc. ("Phoenix Fiber"), the owner and operator of
         the Phoenix network. The Company acquired the remaining 50% interest in
         Phoenix Fiber effective as of October 1, 1996.

(i)      At March 31,  1998,  the  Company  was  committed  to issue a number of
         Common  Shares with a market  value of $.3  million,  based on the then
         market  value of the  Common  Shares and  payable  at various  times in
         Fiscal  1998  to  the  former  shareholders  of  Tri-Star   Residential
         Communications Corp. ("Tri-Star").


                                      -41-

<PAGE>
                      MANAGEMENT'S DISCUSSION AND ANALYSIS
                OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

                                   GST NETWORK

OVERVIEW

         GST Network was formed on April 16, 1998 for the purpose of issuing the
Old Notes and financing the purchase of Acquired Equipment.  GST Network acts as
purchasing  agent for GST USA and sells to GST USA the  equipment  it  purchases
with the  proceeds  from  the May  Offering.  GST  Network  has  only a  limited
operating history.

         As of May 31, 1998, GST Network holds  restricted  cash and investments
of approximately $292.6 million restricted for the acquisition of equipment. All
of such  equipment will be sold to GST USA in exchange for  Intercompany  Notes.
Ultimately,  such  equipment  is  leased  by GST  USA to the  various  operating
subsidiaries of the Company.

OPERATIONS

         The operations of GST Network are limited to (i) purchasing  equipment,
(ii) selling equipment,  (iii) receiving payments under Intercompany Notes, (iv)
making  payments of interest and principal on the Notes,  and (v) fulfilling its
obligations  under the  Indenture,  the Pledge  Agreement  and the  Registration
Rights Agreement.

LIQUIDITY AND CAPITAL RESOURCES

         On May 4, 1998, GST Network  completed the May Offering,  consisting of
$500.0 million  aggregate  principal  amount at maturity of Old Notes. As of May
31,  1998,  the net  proceeds  from the  issuance of the Notes of  approximately
$288.9 million had been used to purchase  government  securities.  The Indenture
governing the Notes includes  restrictive  covenants  which,  among other items,
limit or restrict additional indebtedness incurred by the Company, investment in
certain subsidiaries and the payment of dividends.


                                      -42-

<PAGE>
                                     GST USA

         GST USA was  formed  to hold  the  capital  stock  of the  consolidated
operating  subsidiaries  of GST. In December  1995,  GST USA issued in a private
placement its Senior Notes, which are unconditionally guaranteed by GST, and GST
issued its Convertible Notes, which are  unconditionally  guaranteed by GST USA.
The net  proceeds  from the sale of the 1995  Notes  were  used to fund  capital
expenditures and for working capital.

         GST USA also purchases equipment from its wholly-owned subsidiary,  GST
Equipment  Funding,  Inc.  ("GST  Funding")  and leases  such  equipment  to the
operating  subsidiaries  of GST and GST USA.  GST USA is obligated to assume GST
Funding's Secured Notes as soon as GST USA is permitted to do so pursuant to the
terms  of the  indenture  relating  to the  Senior  Notes.  At such  time GST is
obligated to guarantee the Secured  Notes.  GST Funding issued the Secured Notes
in the Secured Notes Offering in May 1997. Of the $255.8 million of net proceeds
from the  Secured  Notes  Offering,  as of March 31,  1998  approximately  $93.8
million  had been  used to  purchase  securities  pledged  to fund the first six
interest  payments on the Secured Notes (the first such payment of $16.4 million
having been made in November  1997) and  approximately  $115.7  million had been
used to purchase  telecommunications  equipment ($41.5 million of which was used
to refinance intercompany indebtedness).

         Effective January 1, 1998, the Company transferred GST Call America and
TotalNet,  previously direct  wholly-owned  subsidiaries of the Company,  to GST
USA. The financial  results have been restated to reflect the  operations of GST
Call America and TotalNet from the dates such  subsidiaries were acquired by the
Company.  The financial  results have been restated in order to conform with the
Company's presentation as the entities are under common control.

RESULTS OF OPERATIONS

THREE MONTHS ENDED MARCH 31, 1998 TO THREE MONTHS ENDED MARCH 31, 1997

         REVENUES.  Total  revenue  for the three  months  ended  March 31, 1998
increased  $2.8 million,  or 11.5%,  to $27.5 million from $24.7 million for the
three months ended March 31, 1997.  Telecommunications  services revenue for the
three months ended March 31, 1998  increased  $7.9 million,  or 40.3%,  to $27.5
million  from $19.6  million  for the three  months  ended March 31,  1997.  The
increase  in   telecommunications   services  revenue  resulted  primarily  from
increased  local  service  revenue  generated  by GST  USA's  networks  and from
increased long distance  service  revenue.  To a lesser extent,  the increase in
telecommunications  services  revenue  resulted from the acquisition of the Guam
operations of Sprint in October 1997. Product revenue for the three months ended
March 31, 1998 was $0 compared to $5.1  million for the three months ended March
31, 1997 due to the sale of GST USA's remaining 63% interest in NACT.

         OPERATING EXPENSES. Total operating expenses for the three months ended
March 31, 1998  increased  $9.1 million,  or 21.5%,  to $51.1 million from $42.0
million for the three  months  ended March 31,  1997.  Network  expenses,  which
include direct local and long distance circuit costs, increased $3.2 million, or
18.7%, to $20.1 million, or 73.0% of telecommunications services revenue for the
three  months  ended  March 31,  1998  compared  to $16.9  million,  or 86.3% of
telecommunications  services  revenue for the three months ended March 31, 1997.
The primary reason for the decrease in network  expenses as a percent of revenue
is the  increase in  revenues  for  traffic  carried on GST USA's  networks as a
percent of total revenues.  Facilities  administration and maintenance  expenses
(consisting  primarily  of costs  related to  personnel  providing  maintenance,
monitoring and technical  assistance  for the GST USA's  networks) for the three
months ended March 31, 1998 increased $.5 million, or 17.4%, to $3.4 million, or
12.3% of telecommunications services revenue, compared to $2.9 million, or 14.7%
of  telecommunications  services  revenue,  for the three months ended March 31,
1997.

         Cost of product  revenues and research and development  costs were both
$0 for the three months ended March 31, 1998 due to the sale of NACT.

                                      -43-

<PAGE>
         Selling, general and administrative expenses for the three months ended
March 31, 1998  increased  $4.1 million,  or 26.4%,  to $19.3 million from $15.2
million for the three months  ended March 31,  1997.  The increase is due to the
expansion of GST USA's CLEC and enhanced services operations, the acquisition of
three  companies  between  October  1997  and  March  1998 and the  hiring  of a
significant number of marketing,  management  information and sales personnel to
implement the GST USA's integrated services strategy. Such increases were offset
by a decrease of $1.2 million resulting from the disposition of NACT.

         Depreciation and amortization for the three months ended March 31, 1998
increased  $3.8  million,  or 85.8%,  to $8.3  million from $4.5 million for the
three months ended March 31, 1997.  Depreciation  and  amortization was 30.2% of
total  revenue for three months  ended March 31, 1998  compared to 18.1% for the
three  months  ended  March  31,  1997.   The  increase  was   attributable   to
newly-constructed   networks  becoming   operational  and  the  amortization  of
intangible  assets  related  to GST USA's  acquisitions.  GST USA  expects  that
depreciation  will  continue to increase as it expands its networks and longhaul
fiber optic facilities and installs additional switches.

         OTHER  EXPENSES/INCOME.  For the three months ended March 31, 1998, net
other income  increased $47.5 million to $50.7 million from $3.2 million for the
three  months ended March 31,  1997.  The primary  reason for the increase was a
$61.3 million gain from the sale of GST USA's  remaining  interest in NACT. Such
increase was partially offset by increased  interest expense  resulting from the
issuance of the Secured Notes in May 1997.  For the three months ended March 31,
1998, minority interest and income tax expense were $0 due to the disposition of
NACT.

1997 THREE MONTH PERIOD COMPARED TO THE UNAUDITED 1996 THREE MONTH PERIOD

         REVENUES.  Total  revenue for the three months ended  December 31, 1997
increased  $10.0 million,  or 43.2%, to $33.2 million from $23.2 million for the
three months ended December 31, 1996.  Telecommunications  services  revenue for
the three months ended December 31, 1997 increased  $7.5 million,  or 40.7%,  to
$25.9 million from $18.4  million for the three months ended  December 31, 1996.
The increase in  telecommunications  services  revenue  resulted  primarily from
increased  local  and long  distance  service  revenue  generated  by GST  USA's
networks.  Additionally,  during the three months ended  December 31, 1997,  the
Company completed a $1.5 million longhaul conduit sale. To a lesser extent,  the
increase in revenue  resulted  from the  acquisition  of the Guam  operations of
Sprint in October 1997.  Product revenue for the three months ended December 31,
1997 increased $2.5 million, or 52.7%, to $7.3 million from $4.8 million for the
three months ended December 31, 1996. The increase in product  revenue  resulted
primarily from increased unit sales of NACT's STX switch.

         OPERATING EXPENSES. Total operating expenses for the three months ended
December 31, 1997 increased $13.5 million, or 33.3%, to $54.2 million from $40.7
million for the three months ended December 31, 1996.  Network  expenses,  which
include direct local and long distance circuit costs, increased $3.6 million, or
23.8%, to $18.4 million, or 70.8% of telecommunications services revenue for the
three months  ended  December 31, 1997  compared to $14.8  million,  or 80.4% of
telecommunications  services  revenue for the three  months  ended  December 31,
1996.  The primary  reason for the decrease in network  expenses as a percent of
revenue is the increase in on-net  revenues  generated at GST USA's network as a
percent of total revenues.  Facilities  administration and maintenance  expenses
(consisting  primarily  of costs  related to  personnel  providing  maintenance,
monitoring and technical assistance for GST USA's networks) for the three months
ended  December 31, 1997  decreased $.2 million,  or 6.7%,  to $2.9 million,  or
11.2% of telecommunications services revenue, compared to $3.1 million, or 16.9%
of telecommunications  services revenue, for the three months ended December 31,
1996.

         Cost of product  revenue,  which  represents the costs  associated with
product  revenue of NACT,  increased $.5 million,  or 27.8%, to $2.3 million for
the three months ended  December 31, 1997 from $1.8 million for the three months
ended December 31, 1996.  Cost of product  revenue was 31.9% of product  revenue
for the three  months ended  December  31, 1997  compared to 38.1% for the three
months ended December 31, 1996. The

                                      -44-

<PAGE>

decrease in cost of product revenue as a percentage of product revenue  resulted
primarily  from economies of scale related to increased unit sales of NACT's STX
switch.  Research and development  costs for the three months ended December 31,
1997  increased $.3 million,  or 82.0%,  to $.7 million from $.4 million for the
three  months ended  December 31, 1996.  The increase was due to the addition of
personnel  to enhance the current  switch  product  line and to  facilitate  the
development of new switching products and applications.

         Selling, general and administrative expenses for the three months ended
December 31, 1997 increased $5.5 million,  or 35.0%, to $21.3 million from $15.8
million for the three months ended December 31, 1996. The increase is due to the
expansion of GST USA's CLEC and enhanced services operations and the hiring of a
significant number of marketing,  management  information and sales personnel to
implement  GST  USA's  integrated  services  strategy.   Selling,   general  and
administrative  expenses  were 64.1% of total revenue for the three months ended
December 31, 1997  compared to 68.0% of total revenue for the three months ended
December 31, 1996.

         Depreciation  and  amortization for the three months ended December 31,
1997 increased $3.8 million, or 81.8%, to $8.5 million from $4.7 million for the
three  months  ended  December  31,  1996.  The  increase  was  attributable  to
newly-constructed   networks   becoming   operational.   GST  USA  expects  that
depreciation  will  continue to increase as it expands its networks and longhaul
fiber optic  facilities  and  installs  additional  switches.  Depreciation  and
amortization  was 25.6% of total revenue for the three months ended December 31,
1997 compared to 20.2% for the three months ended December 31, 1996.

         OTHER  EXPENSES/INCOME.  For the three months ended  December 31, 1997,
net other expenses increased $9.2 million, or 232.5%, to $13.2 million, or 39.8%
of total revenue,  from $4.0 million,  or 17.1% of total revenue,  for the three
months  ended  December 31,  1996.  The primary  reason for the increase was the
inclusion of interest expense associated with the Secured Notes. The increase in
interest  expense  was  partially  offset  by  interest  income  earned  on  the
investment of a portion of the proceeds of the sale of the Secured  Notes.  To a
lesser extent,  net other expenses increased due to NACT's income tax expense as
well as minority interest in the income of NACT.

FISCAL 1997 COMPARED TO FISCAL 1996

         REVENUES.  Total revenue for Fiscal 1997 increased  $60.9  million,  or
147.5%, to $102.2 million from $41.3 million for Fiscal 1996. Telecommunications
services  revenue for Fiscal 1997 increased $48.5 million,  or 152.9%,  to $80.2
million from $31.7 million for Fiscal 1996.  The increase in  telecommunications
services  revenue  resulted  from the  inclusion  of a full year of revenue from
strategic  acquisitions,  including  GST Call America and  TotalNet,  as well as
increased  CLEC service  revenue  generated by GST USA's  networks.  To a lesser
extent,  the  increase in  telecommunications  services  revenue  resulted  from
increased Internet, shared tenant and data services.  Product revenue for Fiscal
1997 increased $12.4 million,  or 129.6%, to $22.0 million from $9.6 million for
Fiscal 1996. The increase in product revenue  resulted from the  introduction in
April 1996 of NACT's STX switch and subsequent increased unit sales.

         OPERATING EXPENSES.  Total operating expenses for Fiscal 1997 increased
$97.2 million,  or 119.4%, to $178.6 million from $81.4 million for Fiscal 1996.
Network  expenses,  which include direct local and long distance  circuit costs,
increased $38.1 million, or 143.6%, to $64.7 million for Fiscal 1997 compared to
$26.6  million  for  Fiscal  1996.  Facilities  administration  and  maintenance
expenses   (consisting   primarily  of  costs  related  to  personnel  providing
maintenance,  monitoring and technical  assistance  for GST USA's  networks) for
Fiscal 1997 increased  $1.3 million,  or 12.9%,  to $11.6  million,  or 14.5% of
telecommunications  services  revenue,  compared to $10.3  million,  or 32.5% of
telecommunications services revenue, for Fiscal 1996. The primary reason for the
decrease in facilities  administration and maintenance  expenses as a percent of
telecommunications  services  revenue  was the  inclusion  of revenue  from 1996
strategic acquisitions, a significant portion of which was generated off-net.

         Cost of  product  revenue,  which are  costs  associated  with  product
revenue of NACT,  increased $3.1 million,  or 79.7%,  to $7.1 million for Fiscal
1997 from $4.0 million for Fiscal 1996. Cost of product revenue was 32.5%

                                      -45-

<PAGE>
of product  revenue  for Fiscal  1997  compared  to 41.5% for Fiscal  1996.  The
decrease in cost of product revenue as a percentage of product revenue  resulted
from  economies of scale  related to increased  unit sales of NACT's STX switch.
Research and development costs for Fiscal 1997 increased $1.0 million, or 69.3%,
to $2.3 million  from $1.3 million for Fiscal 1996.  The increase was due to the
addition of NACT  personnel  to enhance the current  switch  product line and to
facilitate the development of new switching products and applications.

         Selling,  general and administrative expenses for Fiscal 1997 increased
$38.3 million,  or 123.8%,  to $69.2 million from $30.9 million for Fiscal 1996.
The increase is due to the  expansion  of GST USA's CLEC and  enhanced  services
operations  and the  hiring of a  significant  number of  marketing,  management
information  and sales  personnel to  implement  GST USA's  integrated  services
strategy.  Selling,  general  and  administrative  expenses  were 67.7% of total
revenue for Fiscal 1997 compared to 74.8% of total revenue for Fiscal 1996.

         Depreciation  and amortization for Fiscal 1997 increased $15.4 million,
or 185.5%,  to $23.7 million from $8.3 million for Fiscal 1996. The increase was
attributable  to  newly-constructed  networks  becoming  operational  and to the
amortization   of  intangible   assets   related  to  GST  USA's   acquisitions.
Depreciation  and  amortization  was  23.2% of total  revenue  for  Fiscal  1997
compared to 20.1% for Fiscal 1996.

         OTHER  EXPENSES/INCOME.  For Fiscal 1997, net other expenses  increased
$6.7 million, or 43.3%, to $22.1 million, or 21.7% of total revenue,  from $15.4
million,  or 37.4% of total  revenue,  for Fiscal  1996.  Fiscal  1997 net other
expenses  included a $7.4 million gain  recognized on the sale of one million of
GST USA's shares of NACT in February 1997. If the gain had been excluded,  other
expenses for Fiscal 1997 would have  increased  $14.1  million over Fiscal 1996.
Such increase  primarily  resulted from  increased  interest  expense due to the
issuance  of the 1995 Notes in  December  1995 and the  issuance  of the Secured
Notes in May 1997. To a lesser extent,  other  expenses  increased due to income
tax  expense  attributable  to income of NACT,  which as of March 1, 1997 was no
longer consolidated for tax purposes.

FISCAL 1996 COMPARED TO FISCAL 1995

         REVENUES.  Total revenues for Fiscal 1996 increased  $22.6 million,  or
121.1%, to $41.3 million from $18.7 million for Fiscal 1995.  Telecommunications
services  revenues for Fiscal 1996 increased $20.6 million,  or 185.4%, to $31.7
million from $11.1 million for Fiscal 1995.  The increase in  telecommunications
services   revenues  resulted  from  the  continuing  growth  of  long  distance
(including revenues  associated with Fiscal 1995 and 1996 acquisitions),  local,
Internet  and  data  services.   Acquisitions   (primarily  the  acquisition  of
International Telemanagement Group, Inc. but also the acquisitions of businesses
of  Reservations,  Inc.  d/b/a/ Hawaii On Line ("Hawaii On Line") and Texas-Ohio
Communications,  Inc. and  affiliated  companies  (collectively,  "Texas-Ohio"))
accounted for $15.1 million of the increase in such revenues. Telecommunications
products revenues for Fiscal 1996 increased $2.0 million,  or 26.6%, over Fiscal
1995. The increase in  telecommunications  products  revenues  resulted from the
introduction  by NACT of the STX  product  line in the third  quarter  of Fiscal
1996.

         OPERATING EXPENSES.  Total operating expenses for Fiscal 1996 increased
$52.5 million,  or 181.3%,  to $81.4 million from $28.9 million for Fiscal 1995.
Network  expenses,  which include direct local and long distance  circuit costs,
increased $16.5 million to $26.6 million from $10.1 million for Fiscal 1995, due
to  an  expanded   customer  base  and  increased  usage.  As  a  percentage  of
telecommunications  services revenues, network expenses decreased from 90.9% for
Fiscal 1995 to 83.8% for Fiscal 1996. Facilities  administration and maintenance
expenses  for Fiscal 1996  increased  $8.2  million to $10.3  million  from $2.1
million  for  Fiscal  1995.  As  a  percentage  of  telecommunications  services
revenues,  facilities  administration  and maintenance  expenses  increased from
18.9%  for  Fiscal  1995 to 32.5% for  Fiscal  1996.  The  increase  related  to
additional   personnel  and  facility  costs  required  by  continuing   network
expansion, a substantial portion of which are incurred before the realization of
revenues.

         Cost of product  revenues at NACT for Fiscal 1996 increased $.9 million
to  $4.0  million  from  $3.1  million  for  Fiscal  1995.  As a  percentage  of
telecommunications products revenues for Fiscal 1996, cost of product revenues

                                      -46-

<PAGE>
increased  nominally  as compared to Fiscal  1995 due to initial  lower  margins
resulting  from the  discontinuance  of NACT's former switch  product line as it
began to offer the new STX to existing customers. Research and development costs
increased  nominally for Fiscal 1996 relative to Fiscal 1995 as GST USA moved to
more rapidly develop an improved  billing system product and to maintain ongoing
research and  development  of GST USA's existing  hardware and software  product
lines.

         Selling,  general and administrative  expenses increased $20.9 million,
or 208.8%, to $30.9 million from $10.0 million for Fiscal 1995. The increase was
due to the expansion of GST USA's CLEC and enhanced services operations,  and to
a lesser  extent,  the  acquisitions  during  Fiscal  1996 of  Tri-Star  and the
businesses of Hawaii On Line and  Texas-Ohio.  The  implementation  of GST USA's
integrated  services strategy has resulted in additional  marketing,  management
information and sales staff.

         Depreciation and amortization for Fiscal 1996 increased $5.9 million to
$8.3 million  from $2.4  million for Fiscal 1995 due to  increased  depreciation
resulting from newly  constructed  networks  becoming  operational.  To a lesser
extent,  the increase in depreciation and amortization was also due to increased
amortization of intangible assets resulting from acquisitions.

              OTHER EXPENSES/INCOME. Net other expenses (income) for Fiscal 1996
increased $16.2 million to $15.4 million from $(.8) million for Fiscal 1995. The
increase was principally the result of additional interest expense associated
with the 1995 Notes, offset by interest income resulting from the investment of
the proceeds of the sale of the 1995 Notes.

                                   THE COMPANY

OVERVIEW

         The  Company  provides a broad range of  integrated  telecommunications
products  and  services,   primarily  to  business   customers  located  in  the
California,  Hawaii and other western  continental States. The Company's digital
networks currently serve 40 markets in Arizona,  California,  Hawaii, Idaho, New
Mexico,  Texas and  Washington.  In  addition,  the Company has  networks  under
construction  which,  when  completed,  will expand its  regional  footprint  to
Oregon.  The Company also  constructs,  markets and manages longhaul fiber optic
facilities in Arizona, California and Hawaii. The Company's longhaul fiber optic
facilities  currently extend over 900 route miles and approximately  1,700 route
miles are under construction and expected to become operational over the next 12
months.  The  Company's  full  line  of  products,   which  offer  a  "one-stop"
customer-focused solution to the telecommunications services requirements of its
customers,  include local dial tone, long distance, Internet, data transmission,
and private line services.

         The  Company  plans  to build  specific  network  segments  or to lease
capacity as economically  justified and as the demands of its customers warrant.
Management believes that pursuing this "smart-build"  approach should permit the
Company to provide for ongoing  capital  expenditures  on a "success  basis" and
allow the  Company to build its  customer  base  through an  increased  focus on
sales, marketing and operations support systems. "Smart builds" also provide the
Company  with the  ability  to  address  attractive  service  areas  selectively
throughout its targeted markets.

         The Company has invested  significant  capital and effort in developing
its  telecommunications   business.  This  capital  has  been  invested  in  the
development of the Company's  networks and longhaul fiber optic facilities,  for
the hiring and  development of an experienced  management  team, the development
and installation of operating systems,  the introduction of services,  marketing
and sales efforts and for  acquisitions.  The Company expects to make increasing
capital  expenditures to expand its networks and longhaul fiber optic facilities
and broaden its service  offerings and may consummate  additional  acquisitions.
Proper  management of the Company's  growth will require the Company to maintain
quality  control  over  its  services  and  to  expand  the  Company's  internal
management,

                                      -47-

<PAGE>
technical  and  accounting  systems,  all  of  which  will  require  substantial
investment.  See "Risk  Factors--Development  and  Expansion  Risk and  Possible
Inability to Manage Growth,"  "--Significant Capital Requirements,"  "Dependence
on Billing,  Customer  Services and Information  Systems;  Year 2000 Issues" and
"--Liquidity and Capital Resources."

         The Company changed its fiscal year end from September 30th to December
31st in order to align financial reporting with regulatory  reporting and to the
reporting of others in the Company's  industry sector.  The Company has provided
investors audited financial information for the 1997 Three Month Period and will
provide audited financial information for the subsequent 12-month periods ending
December  31st.  As a result of the limited  revenues and  significant  expenses
associated with the expansion and development of its networks and services,  the
Company's operating results could vary significantly from period to period.

         LOCAL SERVICES.  The Company's 14 high capacity digital switches enable
it to deliver  switched  local services and as of March 31, 1998 the Company had
sold over  76,000  access  lines.  The  Company  plans to  continue  to  install
switching  equipment  in  its  operational  networks,  in  markets  where  it is
constructing networks and in certain other cities where the Company will rely on
ILEC facilities for transmission. Once a switch is operational, where regulatory
conditions and  interconnection  agreements permit, the Company intends to offer
local dial tone, in addition to enhanced services such as ISDN,  Centrex,  voice
mail and other custom calling features.

         The Company expects  negative EBITDA from its switched  services during
the 24 to 36 month period after a switch is deployed.  For switches operating in
conjunction with the Company's  networks,  the Company expects operating margins
to improve as the network is expanded and larger  volumes of traffic are carried
on the  Company's  network.  For switches  operating in cities where the Company
relies on ILEC facilities for transmission, the Company will experience lower or
negative  operating  margins under current ILEC pricing tariffs.  Although under
the Telecommunications Act the ILECs will be required to unbundle local tariffs,
permitting the Company to purchase only the origination and termination services
it needs, thereby decreasing operating expenses,  there can be no assurance that
such  unbundling  will be  effected  in a timely  manner  and  result  in prices
favorable to the Company.

         LONG  DISTANCE  SERVICES.  The Company  offers basic and enhanced  long
distance  services,  such as toll free,  and calling  card  services,  targeting
primarily business customers purchasing between $200 and $15,000 of services per
month as well as resellers and other carriers.  Currently,  the Company provides
these services by reselling the services of certain major long distance carriers
and intends to carry an increasing  portion of this traffic over its own network
facilities.  As part of its strategy,  the Company has acquired a number of long
distance  carriers  and  intends  to  continue  to pursue  acquisitions  of long
distance  carriers  in the future.  In May 1997,  the  Company  acquired  Action
Telcom, Co. ("Action Telcom"),  a  facilities-based  telecommunications  company
located in Abilene, Texas that operates its own network and switching equipment,
originating and terminating its own traffic  principally in Texas. Action Telcom
also manufactures the Network Analysis Management System ("NAMS"),  a UNIX based
software and hardware platform that provides automated  real-time billing record
collection,  fraud  protection  and network  design.  In April 1998, the Company
acquired  ICON, a  switch-based  reseller of long  distance  and local  services
located in Seattle,  Washington,  for  approximately  $23.8  million in cash. In
March  1998,  the Company  acquired  Call  America--Phoenix,  a reseller of long
distance service located in Phoenix,  Arizona, for approximately $3.8 million in
cash.  The  Company  is  obligated  to satisfy  certain  minimum  monthly  usage
requirements  of an  aggregate  of $3.3  million per month as of March 31, 1998,
increasing to a maximum of $6.1 million per month over the next three years.  If
such  requirements  are not  satisfied,  the  Company  may be required to pay an
underutilization fee in addition to its monthly bill.

         DATA SERVICES.  The Company  offers  national and  international  frame
relay  services  on its own frame  relay  network  and  through  interconnection
agreements  with other data  service  providers.  Under  these  agreements,  the
Company and such data service  providers have agreed to link their data networks
and  terminate  one  another's  traffic.  The Company has  deployed  frame relay
switches in 21 markets in the western United  States.  Such switches can provide
both frame  relay and  Internet  services.  The Company  offers data  networking
services such as ATM,

                                      -48-

<PAGE>
high  speed  LAN  connectivity,  frame  relay  and high  capacity  access to the
Internet and plans to offer video conferencing and multimedia  networking in the
future. The Company has one ATM switch  commercially  operational in each of Los
Angeles and Ontario, California.

         INTERNET  SERVICES.  The  Company  presently  offers   Internet-related
services in most of its markets,  such as dedicated  Internet  access,  Web site
development and hosting,  provides local exchange service and upstream transport
for  local  ISPs and  electronic  commerce  services  and is in the  process  of
developing  various  Internet  software  applications.  The Company  also offers
dial-up   Internet   access  to  customers  in  Portland   (Oregon),   Vancouver
(Washington),  the State of Hawaii and select markets in  California,  including
San  Francisco,  and intends to begin  offering such services in the Los Angeles
and Houston  metropolitan areas in 1998. In March 1998, the Company acquired the
business  of  Whole  Earth,  a  San   Francisco-based   full-service   ISP,  for
approximately $9.0 million in cash and the assumption of certain liabilities.

         NETWORK OPERATIONS. The development,  construction and expansion of the
Company's  networks requires  significant  capital,  a large portion of which is
invested  before  any  revenue is  generated.  See "Risk  Factors--  Significant
Capital  Requirements." The Company has experienced,  and expects to continue to
experience,  increasing  negative EBITDA and losses while it expands its network
operations  and builds its  customer  base.  See "Risk  Factors--Historical  and
Anticipated  Future Operating Losses and Negative EBITDA." None of the Company's
existing  networks is  generating  EBITDA.  There can be no  assurance  that the
Company will be able to establish a sufficient  revenue-generating customer base
or achieve EBITDA in any particular market or on a consolidated basis.

         Management  estimates that the total costs associated with the purchase
and  installation  of fiber optic cable and high-speed  electronic  transmission
equipment,  including  capitalized  engineering  costs,  will  range  from $10.0
million to $25.0  million  per  network,  depending  upon the size of the market
served  and the scope  and  complexity  of the  network.  Actual  costs may vary
significantly  from this range. The amounts and timing of these expenditures are
subject to a variety of factors that may vary  significantly  by the  geographic
and  demographic   characteristics  of  each  market.  In  addition  to  capital
expenditure  requirements,  upon  commencement  of the  construction  phase of a
network,  the Company begins to incur direct  operating  costs for such items as
salaries  and rent.  As network  construction  progresses,  the  Company  incurs
rights-of-way costs and increased sales and marketing  expenses.  Certain direct
preoperating  costs for new networks are  capitalized  until the network becomes
operational and are thereafter expensed as incurred.

         The  initial  development  of a network may take as long as six months,
depending  upon the size and complexity of the network and a variety of factors,
including  the time  required  to obtain  rights-of-way  and other  governmental
approvals, such as franchise agreements.  Once actual construction commences, it
may take from two to six months to complete  the initial  backbone  segment of a
network.  The time  required  during  the  construction  phase is  significantly
influenced  by the  number of route  miles  involved,  the mix of aerial  versus
underground  fiber  deployment,  possible delays in receiving fiber optic cable,
electronic equipment and required permits and other factors.

         The Company has  entered  into the  Magnacom  Services  Agreement  with
Magnacom,  a company 99% owned by PNI which is in turn controlled by John Warta,
a director  of the Company and the  Company's  former  Chairman of the Board and
Chief  Executive  Officer,  pursuant  to which  the  Company  has paid  Magnacom
approximately  $14.4 million as prepayments  for future PCS services as of March
31, 1998.  In addition,  the Company has made  advances to Magnacom  aggregating
$818,000 at July 28, 1998 on account of certain operating  expenses of Magnacom.
The Company has been granted an option to acquire up to PNI's entire interest in
Magnacom  (currently  99%),  conditioned  upon compliance with FCC  regulations.
Until such time as FCC regulations or  administrative  action permit the Company
to own in excess of 25% of Magnacom, the option by its terms is limited to a 24%
interest  in  Magnacom  and the option is to be  modified  to  provide  that the
Company own no more than a 25%  interest in Magnacom or PCS Plus  Holdings  upon
exercise thereof. The Company,  Magnacom, PNI and a prospective financing source
are  currently  in  negotiations  with respect to the  modification  of existing
arrangements.  There can be no assurance that such  negotiations  will result in
such a modification  or that such a  modification  will be more favorable to the
Company. See "Business--Magnacom."


                                      -49-

<PAGE>
         In  addition,  the  Company may issue a warrant to purchase up to 4% of
the then outstanding  Common Shares in connection with financing for Magnacom at
an  exercise  price of 120% of the  market  price  thereof.  If such  warrant is
issued,  the Company will record a one-time noncash charge in an amount equal to
the value of the  warrant.  Although  there  can be no  assurance,  the  Company
believes that the value of such a warrant could be between $5.0 million and $6.0
million, depending on the terms of the warrant.

         RECENT DEVELOPMENTS. In a series of transactions between 1993 and 1995,
the  Company  acquired  100% of the  outstanding  capital  stock of NACT,  which
produces  advanced   telecommunications   switching  platforms  with  integrated
applications  software and network  telemanagement  capabilities.  The aggregate
consideration  paid by the  Company  for its  100%  interest  in NACT  was  $8.9
million, consisting of $4.1 million in cash and notes payable and 956,283 Common
Shares  valued at $4.8  million.  In March 1997,  the  Company  sold one million
shares of NACT common stock for net proceeds of $9.0 million.  In February 1998,
the Company sold its remaining 63% interest in NACT in the NACT Sale,  resulting
in net proceeds of  approximately  $85.0  million.  Excluding the  operations of
NACT,  revenues,  operating  loss, net loss and EBITDA would have totalled $78.3
million,  $(92.3) million,  $(117.8) million and $(59.0) million for Fiscal 1997
and $27.6 million,  $(23.8) million, $(40.4) million and $(14.4) million for the
1997 Three Month Period.

RESULTS OF OPERATIONS

THREE MONTHS ENDED MARCH 31, 1998 COMPARED TO THE THREE MONTHS ENDED MARCH 31,
1997

         REVENUES.  Total  revenue  for the three  months  ended  March 31, 1998
increased  $5.3 million,  or 21.7%,  to $30.0 million from $24.7 million for the
three months ended March 31, 1997.  Telecommunications  services revenue for the
three months ended March 31, 1998  increased  $9.6 million,  or 48.7%,  to $29.2
million  from $19.6  million  for the three  months  ended March 31,  1997.  The
increase  in   telecommunications   services  revenue  resulted  primarily  from
increased  local service  revenue  generated by the Company's  networks and from
increased long distance  service  revenue.  To a lesser extent,  the increase in
telecommunications  services  revenue  resulted from the  acquisitions of Action
Telcom in May 1997 and the Guam  operations of Sprint in October  1997.  Product
revenue for the three months ended March 31, 1998  decreased  $4.2  million,  or
83.0%,  to $.9 million  from $5.1  million for the three  months ended March 31,
1997. The decrease in product  revenues  resulted from the sale of the Company's
63% interest in NACT.

         OPERATING EXPENSES. Total operating expenses for the three months ended
March 31, 1998 increased  $12.5 million,  or 29.4%,  to $54.9 million from $42.4
million for the three  months  ended March 31,  1997.  Network  expenses,  which
include direct local and long distance circuit costs, increased $4.2 million, or
24.8%, to $21.1 million, or 72.4% of telecommunications services revenue for the
three  months  ended  March 31,  1998  compared  to $16.9  million,  or 86.3% of
telecommunications  services  revenue for the three months ended March 31, 1997.
The primary reason for the decrease in network  expenses as a percent of revenue
is the increase in revenues for traffic  carried on the Company's  networks as a
percent of total revenues.  Facilities  administration and maintenance  expenses
(consisting  primarily  of costs  related to  personnel  providing  maintenance,
monitoring and technical  assistance  for the Company's  networks) for the three
months ended March 31, 1998 increased $.9 million, or 26.8%, to $4.0 million, or
13.6% of telecommunications services revenue, compared to $3.1 million, or 15.9%
of  telecommunications  services  revenue,  for the three months ended March 31,
1997.

         Cost of product  revenues and research and development  costs decreased
$1.2  million,  or 63%, to $.7 million  from $1.9  million for the three  months
ended March 31, 1997 as a result of the sale of NACT. For the three months ended
March 31, 1998, cost of product  revenues  consists of the costs associated with
product  revenue of Action  Telcom.  The  decrease in research  and  development
costs,  from $.6 million for the three months ended March 31, 1997 to $0 for the
three months ended March 31, 1998 also resulted from the sale of NACT.

                                      -50-

<PAGE>
         Selling, general and administrative expenses for the three months ended
March 31, 1998  increased  $5.0 million,  or 32.6%,  to $20.4 million from $15.4
million,  or 62.3% of total revenue,  for the three months ended March 31, 1997.
The increase is due to the expansion of the Company's CLEC and enhanced services
operations,  the  acquisition of four companies  between May 1997 and March 1998
and the hiring of a significant number of marketing,  management information and
sales personnel to implement the Company's  integrated  services strategy.  Such
increases  were  offset  by a  decrease  of  $1.2  million  resulting  from  the
disposition of NACT.

         Depreciation and amortization for the three months ended March 31, 1998
increased  $4.2  million,  or 93.5%,  to $8.7  million from $4.5 million for the
three  months  ended  March  31,  1997.   The  increase  was   attributable   to
newly-constructed  networks  becoming  operational  and to the  amortization  of
intangible  assets related to the Company's  acquisitions.  The Company  expects
that  depreciation  will  continue to increase  as it expands its  networks  and
longhaul fiber optic facilities and installs additional  switches.  Depreciation
and amortization was 28.9% of total revenue for the three months ended March 31,
1998 compared to 18.1% for the three months ended March 31, 1997.

         OTHER  INCOME/EXPENSE.  For the three months ended March 31, 1998,  net
other income  increased $42.4 million to $44.3 million from $1.9 million for the
three  months ended March 31,  1997.  The primary  reason for the increase was a
$61.3  million gain from the sale of the Company's  remaining  interest in NACT.
Such increase was partially offset by increased  interest expense resulting from
the issuance in May 1997 of $265.0  million of Secured Notes and the issuance in
November  1997 of $144.0  million of Accrual  Notes.  For the three months ended
March 31,  1998,  minority  interest  and income tax expense  were $0 due to the
disposition of NACT.

1997 THREE MONTH PERIOD COMPARED TO THE UNAUDITED 1996 THREE MONTH PERIOD

         REVENUES. Total revenue for the 1997 Three Month Period increased $13.1
million,  or 56.2%, to $36.3 million from $23.2 million for the 1996 Three Month
Period.  Telecommunications  services  revenue for the 1997 Three  Month  Period
increased  $9.1 million,  or 49.4%,  to $27.6 million from $18.4 million for the
1996 Three Month Period.  The increase in  telecommunications  services  revenue
resulted  primarily  from  increased  local  service  revenue  generated  by the
Company's networks and from increased long distance service revenue. To a lesser
extent,  the increase in revenue resulted from the acquisitions of Action Telcom
in May 1997 and the Guam  operations  of Sprint in October  1997.  Additionally,
during the 1997  Three  Month  Period,  the  Company  completed  a $1.5  million
longhaul conduit sale. Product revenue for the 1997 Three Month Period increased
$3.9  million,  or 82.1%,  to $8.7  million from $4.8 million for the 1996 Three
Month Period.  The increase in product  revenues  resulted from  increased  unit
sales of NACT's STX switch  and, to a lesser  extent,  the  inclusion  of Action
Telcom's sales of NAMS.  Excluding NACT,  product revenue  totalled $1.4 million
and $0 for the  1997  Three  Month  Period  and the  1996  Three  Month  Period,
respectively.

         OPERATING  EXPENSES.  Total operating expenses for the 1997 Three Month
Period  increased  $16.9 million,  or 41.0%, to $58.1 million from $41.2 million
for the 1996 Three Month Period.  Network  expenses,  which include direct local
and long distance  circuit  costs,  increased $3.7 million,  or 23.5%,  to $19.4
million,  or 70.5% of  telecommunications  services  revenue  for the 1997 Three
Month Period compared to $15.7 million, or 85.3% of telecommunications  services
revenue for the 1996 Three Month Period.  The primary reason for the decrease in
network  expenses  as a percent of revenue is the  increase  in on-net  revenues
generated  for traffic  carried on the  Company's  network as a percent of total
revenues.   Facilities   administration  and  maintenance  expenses  (consisting
primarily of costs related to personnel  providing  maintenance,  monitoring and
technical assistance for the Company's networks) for the 1997 Three Month Period
increased $.2 million, or 5.6%, to $3.5 million, or 12.7% of  telecommunications
services  revenue,  compared  to $3.3  million,  or 18.0% of  telecommunications
services revenue, for the 1996 Three Month Period.

         Cost of product  revenue,  which  includes  the costs  associated  with
product revenue of NACT and Action Telcom,  increased $1.3 million, or 70.4%, to
$3.1 million for the 1997 Three Month Period from $1.8 million for

                                      -51-

<PAGE>
the 1996  Three  Month  Period.  Cost of  product  revenue  was 35.6% of product
revenue  for the 1997 Three  Month  Period  compared to 38.1% for the 1996 Three
Month Period. The decrease in cost of product revenue as a percentage of product
revenue  resulted  primarily  from  economies of scale related to increased unit
sales of NACT's STX switch. Excluding NACT, cost of product revenue totalled $.8
million and $0 for the 1997 Three Month Period and the 1996 Three Month  Period,
respectively.  Research  and  development  costs for the 1997 Three Month Period
increased  $.4 million,  or 90.5%,  to $.8 million from $.4 million for the 1996
Three Month Period. The increase was due to the addition of personnel to enhance
NACT's switch  product line and to facilitate  the  development of new switching
products and applications.

         Selling,  general and administrative  expenses for the 1997 Three Month
Period increased $7.2 million, or 47.2%, to $22.4 million from $15.2 million for
the 1996  Three  Month  Period.  The  increase  is due to the  expansion  of the
Company's  CLEC  and  enhanced  services  operations,  the  acquisition  of  two
companies between May and October 1997 and the hiring of a significant number of
marketing, management information and sales personnel to implement the Company's
integrated services strategy.  Selling, general and administrative expenses were
61.9% of total  revenue  for the 1997 Three  Month  Period  compared to 65.6% of
total revenue for the 1996 Three Month Period.

         Depreciation and amortization for the 1997 Three Month Period increased
$4.2  million,  or 89.0%,  to $8.9  million from $4.7 million for the 1996 Three
Month  Period.  The  increase was  attributable  to  newly-constructed  networks
becoming operational and to the amortization of intangible assets related to the
Company's  acquisitions.  The Company expects that depreciation will continue to
increase as it expands its  networks  and longhaul  fiber optic  facilities  and
installs additional  switches.  Depreciation and amortization was 24.4% of total
revenue  for the 1997 Three  Month  Period  compared to 20.2% for the 1996 Three
Month Period.

         OTHER  EXPENSES/INCOME.  For the 1997  Three  Month  Period,  net other
expenses increased $13.1 million, or 281.8%, to $17.7 million, or 48.9% of total
revenue,  from $4.6 million, or 20.0% of total revenue, for the 1996 Three Month
Period.  The  primary  reason for the  increase  was the  inclusion  of interest
expense  associated  with the Secured Notes and Accrual  Notes.  The increase in
interest  expense  was  partially  offset  by  interest  income  earned  on  the
investment  of a portion of the proceeds of the sale of such notes.  To a lesser
extent,  net other  expenses  increased due to the  Company's  share of Global's
losses and to NACT's  income tax  expense as well as  minority  interest  in the
income of NACT.

FISCAL 1997 COMPARED TO FISCAL 1996

         REVENUES.  Total revenue for Fiscal 1997 increased  $64.7  million,  or
156.6%, to $106.0 million from $41.3 million for Fiscal 1996. Telecommunications
services  revenue for Fiscal 1997 increased $50.9 million,  or 160.3%,  to $82.6
million from $31.7 million for Fiscal 1996.  The increase in  telecommunications
services  revenue  resulted  from the  inclusion  of a full year of revenue from
strategic  acquisitions,  including  GST Call America and  TotalNet,  as well as
increased CLEC service revenue generated by the Company's networks.  To a lesser
extent,  the  increase in  telecommunications  services  revenue  resulted  from
increased Internet, shared tenant and data services.  Product revenue for Fiscal
1997 increased $13.8 million,  or 144.2%, to $23.4 million from $9.6 million for
Fiscal  1996.  The  increase  in product  revenue  resulted  primarily  from the
introduction  in April 1996 of NACT's STX switch and  subsequent  increased unit
sales.  To a lesser  extent,  the  increase  in  product  revenue  is due to the
inclusion of sales of network  management and fraud protection systems by Action
Telcom, which was acquired on May 31, 1997.

         OPERATING EXPENSES.  Total operating expenses for Fiscal 1997 increased
$108.6 million, or 129.5%, to $192.5 million from $83.9 million for Fiscal 1996.
Network  expenses,  which include direct local and long distance  circuit costs,
increased   $39.7  million,   or  149.2%,   to  $66.3   million,   or  80.2%  of
telecommunications  services  revenue for Fiscal 1997 compared to $26.6 million,
or 83.8% of  telecommunications  services  revenue for Fiscal  1996.  Facilities
administration and maintenance expenses  (consisting  primarily of costs related
to personnel providing maintenance,  monitoring and technical assistance for the
Company's networks) for Fiscal 1997 increased

                                      -52-

<PAGE>
$2.0  million,  or  19.3%,  to $12.3  million,  or  14.9% of  telecommunications
services  revenue,  compared to $10.3  million,  or 32.5% of  telecommunications
services  revenue,  for Fiscal  1996.  The  primary  reason for the  decrease in
facilities   administration   and   maintenance   expenses   as  a  percent   of
telecommunications  services  revenue  was the  inclusion  of revenue  from 1996
strategic acquisitions, a significant portion of which was generated off-net.

         Cost of product  revenue,  which  includes  the costs  associated  with
product revenue of NACT and Action Telcom, increased $4.0 million, or 101.1%, to
$8.0 million for Fiscal 1997 from $4.0 million for Fiscal 1996.  Cost of product
revenue  was 34.2% of product  revenue  for Fiscal  1997  compared  to 41.5% for
Fiscal 1996. The decrease in cost of product  revenue as a percentage of product
revenue  resulted  primarily  from  economies of scale related to increased unit
sales of NACT's STX  switch.  Research  and  development  costs for Fiscal  1997
increased $1.0 million,  or 71.3%,  to $2.3 million from $1.3 million for Fiscal
1996.  The  increase  was due to the  addition of NACT  personnel to enhance the
current switch  product line and to facilitate the  development of new switching
products and applications.

         Selling,  general and administrative expenses for Fiscal 1997 increased
$46.1 million,  or 138.2%,  to $79.5 million from $33.4 million for Fiscal 1996.
The increase is due to the expansion of the Company's CLEC and enhanced services
operations,  the  acquisition  of four companies from September 1996 to May 1997
and the hiring of a significant number of marketing,  management information and
sales  personnel to implement the Company's  integrated  services  strategy.  In
addition,  $7.4 million of the increase in selling,  general and  administrative
expense was  attributable to a one-time  non-cash charge recorded in Fiscal 1997
when 750,000  Common Shares were  released from escrow upon the  resolution of a
contingency.  See "Certain  Relationships  and Related  Transactions."  Selling,
general and administrative  expenses were 75.0% of total revenue for Fiscal 1997
compared to 80.8% of total revenue for Fiscal 1996.

         Depreciation  and amortization for Fiscal 1997 increased $15.9 million,
or 191.1%,  to $24.2 million from $8.3 million for Fiscal 1996. The increase was
attributable  to  newly-constructed  networks  becoming  operational  and to the
amortization  of  intangible  assets  related  to  the  Company's  acquisitions.
Depreciation  and  amortization  was  22.8% of total  revenue  for  Fiscal  1997
compared to 20.1% for Fiscal 1996.

         OTHER  EXPENSES/INCOME.  For Fiscal 1997, net other expenses  increased
$9.0 million, or 50.7%, to $26.8 million, or 25.3% of total revenue,  from $17.8
million,  or 43.1% of total  revenue,  for Fiscal  1996.  Fiscal  1997 net other
expenses  included a $7.4 million gain  recognized on the sale of one million of
the Company's  shares of NACT in February  1997. If the gain had been  excluded,
other  expenses for Fiscal 1997 would have  increased  $16.4 million over Fiscal
1996. Such increase  primarily  resulted from increased  interest expense due to
the issuance of the 1995 Notes in December  1995 and the issuance of the Secured
Notes in May 1997. To a lesser extent,  other  expenses  increased due to income
tax expense attributable to income of NACT.

FISCAL 1996 COMPARED TO FISCAL 1995

         REVENUES.  Total revenues for Fiscal 1996 increased  $22.6 million,  or
121.0%, to $41.3 million from $18.7 million for Fiscal 1995.  Telecommunications
services  revenues for Fiscal 1996 increased  $20.6  million,  or 185%, to $31.7
million from $11.1 million for Fiscal 1995.  The increase in  telecommunications
services   revenues  resulted  from  the  continuing  growth  of  long  distance
(including revenues  associated with Fiscal 1995 and 1996 acquisitions),  local,
Internet and data services.  Acquisitions  (primarily the acquisition of ITG but
also the  acquisitions  of GST Call America and the businesses of Hawaii On Line
and  Texas-Ohio  accounted for $15.1  million of the increase in such  revenues.
Telecommunications  products revenues for Fiscal 1996 increased $2.0 million, or
26.6%,  over Fiscal 1995. The increase in  telecommunications  products revenues
resulted  from the  introduction  by NACT of the STX  product  line in the third
quarter of Fiscal 1996.

         OPERATING EXPENSES.  Total operating expenses for Fiscal 1996 increased
$53.6 million,  or 176.8%,  to $83.9 million from $30.3 million for Fiscal 1995.
Network expenses, which include direct local and long distance

                                      -53-

<PAGE>
circuit costs,  increased  $16.5 million to $26.6 million from $10.1 million for
Fiscal  1995,  due to an  expanded  customer  base  and  increased  usage.  As a
percentage of telecommunications  services revenues,  network expenses decreased
from 90.9% for Fiscal 1995 to 83.8% for Fiscal 1996.  Facilities  administration
and maintenance expenses for Fiscal 1996 increased $8.2 million to $10.3 million
from $2.1  million  for  Fiscal  1995.  As a  percentage  of  telecommunications
services revenues,  facilities administration and maintenance expenses increased
from 18.9% for Fiscal 1995 to 32.5% for Fiscal  1996.  The  increase  related to
additional   personnel  and  facility  costs  required  by  continuing   network
expansion, a substantial portion of which are incurred before the realization of
revenues.

         Cost of product  revenues at NACT for Fiscal 1996 increased $.9 million
to  $4.0  million  from  $3.1  million  for  Fiscal  1995.  As a  percentage  of
telecommunications  products  revenues for Fiscal 1996, cost of product revenues
increased  nominally  as compared to Fiscal  1995 due to initial  lower  margins
resulting  from the  discontinuance  of NACT's former switch  product line as it
began to offer the new STX to existing customers. Research and development costs
increased nominally for Fiscal 1996 relative to Fiscal 1995 as the Company moved
to more  rapidly  develop an  improved  billing  system  product and to maintain
ongoing research and development of the Company's existing hardware and software
product lines.

         Selling,  general and administrative  expenses increased $22.0 million,
or 193.5%, to $33.4 million from $11.4 million for Fiscal 1995. The increase was
due to the expansion of the Company's CLEC and enhanced services operations, and
to a lesser extent, the acquisitions  during Fiscal 1996 of GST Call America and
Tri-Star,   and  the   businesses  of  Hawaii  On  Line  and   Texas-Ohio.   The
implementation  of the Company's  integrated  services  strategy has resulted in
additional marketing, management information and sales staff.

         Depreciation and amortization for Fiscal 1996 increased $5.9 million to
$8.3 million  from $2.4  million for Fiscal 1995 due to  increased  depreciation
resulting from newly  constructed  networks  becoming  operational.  To a lesser
extent,  the increase in depreciation and amortization was also due to increased
amortization of intangible assets resulting from acquisitions.

         OTHER  EXPENSES/INCOME.  Net other  expenses for Fiscal 1996  increased
$18.1 million to $17.8 million from $(.3) million for Fiscal 1995.  The increase
was principally the result of additional  interest  expense  associated with the
1995 Notes,  offset by interest  income  resulting  from the  investment  of the
proceeds of the sale of the 1995 Notes.

LIQUIDITY AND CAPITAL RESOURCES

         The  Company has  incurred  significant  operating  and net losses as a
result of the  development  and operation of its networks.  The Company  expects
that such  losses  will  continue as the  Company  emphasizes  the  development,
construction  and expansion of its networks and builds its customer  base.  Cash
provided  by the  Company's  operations  will  not be  sufficient  to  fund  the
expansion of its networks, longhaul fiber optic facilities and services.

         The  Company's  net cash  provided by (used in) operating and investing
activities  was $28.7  million and $(49.7)  million for the three  months  ended
March 31, 1998 and 1997,  respectively.  During the three months ended March 31,
1998,  the Company  completed the sale of its remaining 63% interest in NACT for
net proceeds of  approximately  $85.0  million.  Net cash  provided by financing
activities  from borrowings and equity  issuances to fund capital  expenditures,
acquisitions  and  operating  losses was $12.2 million and $73.4 million for the
three months ended March 31, 1998 and 1997, respectively.

         Capital expenditures for the three months ended March 31, 1998 and 1997
were $41.8  million  and $62.5  million,  respectively.  The  Company  estimates
capital  expenditures  for Fiscal  1998 and Fiscal  1999 of  approximately  $325
million and $300 million,  respectively.  The majority of these  expenditures is
expected to be made for the  construction  of network and  longhaul  fiber optic
facilities and the purchase of switches and related  equipment to facilitate the
offering of the Company's services.  Continued  significant capital expenditures
are expected to be made

                                      -54-

<PAGE>

thereafter.  In  addition,  the Company  expects to continue to incur  operating
losses  while it expands  its  business  and builds its  customer  base.  Actual
capital  expenditures  and  operating  losses will  depend on numerous  factors,
including the extent of future  expansion,  acquisition  opportunities and other
factors   beyond  the  Company's   control,   including   economic   conditions,
competition, regulatory developments and the availability of capital.

         In addition to the Company's capital  expenditures,  in March 1998, the
Company  acquired  Call  America--  Phoenix,  a  Phoenix-based  reseller of long
distance,  for  approximately  $3.8  million in cash and the  business  of Whole
Earth, a San Francisco-based ISP, for approximately $9.0 million in cash and the
assumption of certain  liabilities.  In April 1998, the Company acquired ICON, a
switch-based reseller of long distance and local service located in Seattle, for
approximately $23.8 million in cash.

         In November  1997,  the Company  completed the 1997 Public  Offering of
6,440,000  Common Shares at $12 per share and $144.0  million of Accrual  Notes.
Semi-annual  cash  interest  payments on the 1997  Accrual  Notes will not begin
until May 2003.

         In May 1998,  the Company  completed the May Offering of $500.0 million
principal amount at maturity of Old Notes. The Notes fully accrete to face value
on May 1, 2003. From and after May 1, 2003, the Notes bear interest,  which will
be payable in cash,  at a rate of 10.5% per annum on each May 1 and  November 1,
commencing  November  1, 2003.  The net  proceeds  from the sale of the Notes of
approximately    $288.9   million   are   restricted   for   the   purchase   of
telecommunications equipment and network infrastructure.  The Indenture includes
restrictive  covenants which,  among other items,  limit or restrict  additional
indebtedness incurred by the Company,  investment in certain  subsidiaries,  the
sale of assets and the payment of dividends.

         At March 31,  1998,  the Company had  approximately  $796.9  million of
indebtedness  outstanding and $54.6 million of mandatorily redeemable preference
shares.  In  addition,  as of March 31, 1998,  the Company had $30.5  million of
availability  under the Tomen Facility and $108.1 million of availability  under
the Siemens Loan Agreement.  Although the Company's  liquidity was substantially
improved as a result of proceeds  received from the sale of the 1995 Notes,  the
Secured  Notes,  the  Accrual  Notes  and  the  Notes,  the  Company  will  have
significant  debt  service  obligations.  The  Company  will be required to make
principal and interest  payments of approximately  $52.5 million (of which $35.1
million will be made from funds  securing the Secured  Notes,  $63.3 million (of
which $35.1 million will be made from funds securing the Secured  Notes),  $66.1
million (of which $17.6  million  will be made from funds  securing  the Secured
Notes),  $115.9 million and $114.2 million in the remainder of 1998 and in 1999,
2000, 2001 and 2002,  respectively.  In addition,  the Company  anticipates that
cash flow from  operations  will be insufficient to pay interest in cash on both
the 1995  Notes  when  such  interest  becomes  payable  in June 2001 and on the
Secured  Notes  starting  in November  2000 once the amount  pledged to fund the
first six scheduled  interest payments on the Secured Notes is paid and to repay
the 1995 Notes,  the Secured  Notes and the Accrual  Notes in full and that such
notes will need to be  refinanced.  The  ability of the  Company to effect  such
refinancings will be dependent upon the future performance of the Company, which
will be subject to prevailing economic conditions and to financial, business and
other factors beyond the control of the Company.  There can be no assurance that
the Company  will be able to improve its  operating  results or that the Company
will be able to meet its debt service obligations.

         At March  31,  1998,  the  Company  had  cash,  cash  equivalents,  and
investments,  including  restricted cash and investments of approximately $375.5
million.  The  Company  believes  that the  amounts  on hand  together  with the
proceeds  from the May Offering  restricted  for the  purchase of equipment  and
borrowings  expected to be  available  under the Tomen  Facility and the Siemens
Loan  Agreement,  will  provide  sufficient  funds for the Company to expand its
business as presently planned and to fund its operating expenses through October
1999.  Thereafter,  the Company  expects to require  additional  financing.  The
extent of additional  financing will depend on, among other things,  the rate of
the Company's expansion and the success of the Company's business.  In the event
that the Company's plans or assumptions change or prove to be inaccurate, or its
cash   resources,   together  with  borrowings   under  the  current   financing
arrangements  prove  to  be  insufficient  to  fund  the  Company's  growth  and
operations,  or if the Company consummates additional acquisitions,  the Company
may be required to seek additional

                                      -55-

<PAGE>
sources  of  capital  (or  seek   additional   capital   sooner  than  currently
anticipated).  The  Company  may also seek to raise  additional  capital to take
advantage  of  favorable  conditions  in the  capital  markets.  There can be no
assurance  that  additional  financing  will be  available to the Company or, if
available, that it can be concluded on terms acceptable to the Company or within
the limitations contained within the Company's financing  arrangements.  Failure
to obtain such financing could result in the delay or abandonment of some or all
of the  Company's  development  or  expansion  plans and could  have a  material
adverse  effect on the  Company's  business.  Such failure  could also limit the
ability  of  the  Company  to  make  principal  and  interest  payments  on  its
outstanding  indebtedness.  The Company has no material working capital or other
credit  facility under which it may borrow for working capital and other general
corporate  purposes.  There can be no  assurance  that such a  facility  will be
available  to the  Company  in the  future  or  that  if  such a  facility  were
available,  that it would be available on terms and conditions acceptable to the
Company.

INCOME TAXES AND ADOPTION OF NEW ACCOUNTING STANDARDS

         At  December  31,  1997,  the  Company had a U.S.  net  operating  loss
carryforward of  approximately  $130.4 million and a Canadian net operating loss
carryforward of approximately Cdn. $11.1 million.  While such loss carryforwards
are available to offset future taxable  income of the Company,  the Company does
not expect to  generate  sufficient  taxable  income so as to  utilize  all or a
substantial  portion  of such  loss  carryforwards  prior to  their  expiration.
Further,  the  utilization  of net operating loss  carryforwards  against future
taxable income is subject to limitation if the Company experiences an "ownership
change" as defined in Section 382 of the Code and the analogous provision of the
Canada Act.

         In June  1997,  the  FASB  issued  Statement  of  Financial  Accounting
Standard  ("SFAS")  No.  130,  "Reporting  Comprehensive  Income."  SFAS No. 130
established  standards for the reporting and display of comprehensive income and
its components in the financial statements. The Company is required to adopt the
provisions of SFAS No. 130 in 1998, however,  the Company believes that adopting
this  new  accounting   standard  will  not  materially  impact  the  manner  of
presentation of its financial statements as currently and previously reported.

         In June 1997, the FASB issued SFAS No. 131,  "Disclosure about Segments
of an  Enterprise  and  Related  Information",  which  changes  the  way  public
companies report  information about operating  segments.  SFAS No. 131, which is
based on the management approach to segment reporting,  establishes requirements
to report  selected  segment  information  quarterly  and to report  entity-wide
disclosures  about  products and  services,  major  customers,  and the material
countries in which the entity holds assets and reports  revenue.  The Company is
required to adopt the  provisions  of SFAS No. 131 in 1998.  The Company has not
yet completed its analysis of the impact on the financial  statements  that will
be caused by the adoption of this accounting standard.

YEAR 2000 PROGRAM

         Many  computer  systems will  experience  difficulty  processing  dates
beyond  the year  1999  and will  need to be  modified  prior to the year  2000.
Failure  to  make  such  modifications   could  result  in  system  failures  or
miscalculations  causing  disruptions of operations,  including  among others an
inability to process  transactions,  send invoices or engage in normal  business
activities.  The  Company's  core  internal  systems  that  have  been  recently
implemented  are year 2000  compliant.  The remaining core internal  systems are
scheduled  to be replaced by the second  quarter of 1999 and are  expected to be
year 2000 compliant when installed. The Company is also completing a preliminary
assessment of year 2000 issues not related to its core systems, including issues
surrounding  systems that interface  with those  operated by unrelated  parties.
Based on its initial  evaluation,  the Company does not believe that the cost of
remedial actions will have a material adverse effect on the Company's results of
operations and financial  condition.  There can be no assurance,  however,  that
there  will  not  be a  delay  in,  or  increased  costs  associated  with,  the
implementation  of changes as the program  progresses,  and failure to implement
such changes could have an adverse effect on future results of operations.

                                      -56-

<PAGE>
                                    BUSINESS

OVERVIEW

         The  Company  provides a broad range of  integrated  telecommunications
products and services,  primarily to business  customers  located in California,
Hawaii and other western  continental  States. As a  facilities-based  CLEC, the
Company  operates  state-of-the-art,  digital  telecommunications  networks that
represent an  alternative to ILECs.  The Company's full line of products,  which
offer a "one-stop"  customer-focused solution to the telecommunications services
requirements of its customers, include local dial tone, long distance, Internet,
data transmission and private line services.

         The Company's  digital networks  currently serve 40 markets in Arizona,
California,  Hawaii, Idaho, New Mexico, Texas and Washington.  In addition,  the
Company has networks under construction  which, when completed,  will expand its
regional  footprint to Oregon.  The Company's 14 high capacity  digital switches
enable it to  deliver  switched  local  services  and as of March  31,  1998 the
Company had sold over 76,000 access lines.

         The Company also  constructs,  markets and manages longhaul fiber optic
facilities in Arizona, California and Hawaii. The Company's longhaul fiber optic
facilities  currently extend over 900 route miles and approximately  1,700 route
miles are under construction and expected to become operational over the next 12
months.

         Management  believes  that  the  formation  of an  integrated  regional
network through the  interconnection of the Company's  individual  networks with
longhaul  fiber  optic  facilities  will  provide  significant  competitive  and
economic  advantages.  In  addition  to  providing  the  Company  with a  larger
addressable market, the interconnection of its networks is expected to allow the
Company  to carry a portion  of its  intra-regional  telecommunications  traffic
on-net,  thereby  improving  operating  margins by  reducing  payments  to other
carriers for use of their  facilities.  In addition,  increasing demand for high
bandwidth  capacity has created  opportunities  for the Company to sell or lease
capacity on its network to other communications carriers.

         The  Company  plans  to build  specific  network  segments  or to lease
capacity as economically  justified and as the demands of its customers warrant.
Management believes that pursuing this "smart-build"  approach should permit the
Company to provide for ongoing  capital  expenditures  on a "success  basis" and
allow the  Company to build its  customer  base  through an  increased  focus on
sales, marketing and operations support systems. "Smart builds" also provide the
Company  with the  ability  to  address  attractive  service  areas  selectively
throughout its targeted markets.

TELECOMMUNICATIONS SERVICES STRATEGY

         In conjunction with its network expansion,  the Company has developed a
strategy to leverage its existing facilities and  infrastructure,  customer base
and  experience  by  providing  a broad range of  integrated  telecommunications
services to meet the voice and data needs of its end-user customers. The Company
focuses   on   medium  to   large-sized   businesses   that   have   significant
telecommunications  requirements.  The Company,  through its  established  sales
channels, offers: (i) bundled telecommunications services; (ii) flexible pricing
and  customized  products and services;  and (iii) an enhanced level of customer
service.  To  meet  its  customers'  needs,  the  Company  offers  a  number  of
telecommunications services, including:

         LOCAL SERVICES. Where authorized,  the Company offers both switched and
dedicated local service. Dedicated local services involve a fixed communications
link,  usually  between an end-user and a long  distance  carrier's  POP. With a
switch, it is possible for the Company to direct traffic to any end-user or long
distance carrier provided that the Company has an interconnection agreement with
the  connecting  carriers.  The Company  plans to continue to install  switching
equipment  in  its  targeted  markets.  Once  a  switch  is  operational,  where
regulatory

                                      -57-

<PAGE>
conditions and  interconnection  agreements permit, the Company intends to offer
local dial tone, in addition to enhanced services such as ISDN,  Centrex,  voice
mail and other custom calling features.

         LONG  DISTANCE  SERVICES.  The Company  offers basic and enhanced  long
distance  services,  such as toll free,  and calling  card  services,  targeting
primarily business customers purchasing between $200 and $15,000 of services per
month as well as resellers and other carriers.  Currently,  the Company provides
these services by reselling the services of certain major long distance carriers
and intends to carry an increasing  portion of this traffic over its own network
facilities. In April 1998, the Company acquired ICON, a switch-based reseller of
long  distance  and  local   services   located  in  Seattle,   Washington   for
approximately  $23.8 million in cash. In March 1998,  the Company  acquired Call
America--Phoenix,  a reseller  of long  distance  services  located in  Phoenix,
Arizona for approximately $3.8 million in cash.

         DATA SERVICES.  The Company  offers  national and  international  frame
relay  services  on its own frame  relay  network  and  through  interconnection
agreements  with other data  service  providers.  Under  these  agreements,  the
Company and such data service  providers have agreed to link their data networks
and  terminate  one  another's  traffic.  The Company has  deployed  frame relay
switches in 21 markets in the western United  States.  Such switches can provide
both frame  relay and  Internet  services.  The Company  offers data  networking
services such as ATM, high speed LAN connectivity service,  frame relay and high
capacity  access to the  Internet  and  plans to offer  video  conferencing  and
multi-media   networking  in  the  future.   The  Company  has  one  ATM  switch
commercially operational in each of Los Angeles and Ontario, California.

         INTERNET  SERVICES.  The  Company  presently  offers   Internet-related
services in most of its markets,  such as dedicated  Internet  access,  Web site
development and hosting,  provides access and upstream  transport for local ISPs
and  electronic  commerce  services and is in the process of developing  various
Internet software applications.  The Company also offers dial-up Internet access
to customers in Portland (Oregon),  Vancouver (Washington),  the State of Hawaii
and select markets in California,  including San Francisco, and intends to begin
offering  such  services in the Los Angeles  and Houston  metropolitan  areas in
1998.  In March 1998,  the Company  acquired the business of Whole Earth,  a San
Francisco-based full-service ISP, for approximately $9.0 million in cash and the
assumption of certain liabilities.

         SHARED TENANT  SERVICES.  The Company offers shared tenant  services to
large  apartment and  residential  communities  in Arizona,  Idaho,  New Mexico,
Oregon, Utah and Washington. Shared tenant services bundle local, long distance,
Internet access, cable television and home alarm service.

         The  Company  provides  local dial tone  service  to its shared  tenant
customers  within each apartment  complex through on-site PBX telephone  systems
connected  to the ILEC.  As the Company  expands its network and central  office
switching  facilities,  PBXs will be replaced  with central  office access nodes
originating  within the  Company's own dial tone  facilities,  which the Company
expects to provide significant cost savings and customer feature capability.  In
addition,  the Company is in the process of connecting apartment  communities to
its own fiber network, thereby permitting the Company to realize additional cost
savings for transport.

         The  Company is  expanding  its  telecommunications  services  business
through  internal  development  and will continue to explore  opportunities  for
further expansion by acquisitions and joint ventures.

TELECOMMUNICATIONS NETWORKS AND FACILITIES

         The Company's networks comprise fiber optic cables,  microwave or other
wireless facilities, integrated switching facilities, advanced electronics, data
switching equipment, transmission equipment and associated wiring and equipment.
The  Company  typically  designs  its  networks  with a ring  architecture  with
connectivity to the ILEC's central offices,  POPs of long distance  carriers and
large concentrations of telecommunication intensive end-users.


                                      -58-

<PAGE>
         The Company's  digital networks  currently serve 40 markets in Arizona,
California,  Hawaii, Idaho, New Mexico, Texas and Washington.  In addition,  the
Company has networks under construction  which, when completed,  will expand its
regional  footprint to Oregon.  The Company's 14 high capacity  digital switches
enable it to deliver  switched  local  services.  The following  table  presents
information  as of March 31, 1998  concerning  the  Company's  networks that are
operational  and  under   construction  and  the  Company's  switches  that  are
operational:

<TABLE>
<CAPTION>

                                                                        DATE NETWORK             CURRENT               DATE SWITCH
                                                                        COMMERCIALLY        OPERATIONAL ROUTE         COMMERCIALLY
LOCATION                                    SERVICE AREA               OPERATIONAL(1)            MILES(2)              OPERATIONAL
- --------                                    ------------               --------------            --------              -----------

<S>                                <C>                              <C>                                <C>        <C>
Arizona.........................   Phoenix                          February 1994(3)                   11         August 1997
                                   Tucson                           September 1995                     27         September 1997

California                         Concord, Oakland, San            September 1997                     79         November 1997
    Northern California.........   Francisco,Walnut Creek,                                                        March 1998
                                   Livermore
                                   Hayward, San Ramon               September 1997                     11
                                   Mare Island                      January 1997                       12
                                   Pleasanton                       August 1996                        42

Southern California.............   Loma Linda, Rialto,              April 1995                        106         July 1997
                                   Riverside, San Bernardino,
                                   Monterey Park
                                   City of Industry, Ontario        August 1995                       203
                                   Los Angeles                      December 1996                      --(4)      March 1998
                                   Palm Springs                     2nd Quarter 1998(5)

San Joaquin Valley..............   Fresno, Bakersfield              November 1996                      44         March 1998
Central Coast..................    San Luis Obispo                  January 1998                        5         December 1997
                                   Santa Barbara,                   2nd Quarter 1998
                                   Goleta

Hawaii..........................   Honolulu (Oahu)                  February 1997                      20         February 1997
                                   Kauai                            December 1997                      36

Idaho...........................   Boise                            May 1997                            4         March 1998

New Mexico......................   Albuquerque                      January 1996                       67         September 1997

Oregon..........................   Portland                         2nd Quarter 1998                              March 1998

Texas...........................   Abilene                          June 1997                           6
                                   Houston                                                                        March 1998

Washington......................   Spokane                          September 1996                      3         December 1997
                                   Vancouver                        November 1996                       6
</TABLE>

- ---------------
(1)      Refers to the first month during  which the  Company's  network  became
         commercially  operational  or the  quarter  during  which  the  Company
         expects a network under construction to become operational. The Company
         deems a network to be  commercially  operational  when its fiber  optic
         cable and related electronics permit the Company to provide service.

(2)      Includes owned and leased miles.

(3)      The Company  acquired 100%  ownership of Phoenix  Fiber,  the owner and
         operator of the Phoenix Network,  in October 1996.  Prior thereto,  the
         Company held a 50% interest in and did not manage this network.

(4)      The network in Los Angeles interconnects longhaul traffic with the POPs
         of other carriers.

                                      -59-

<PAGE>
(5)      The fiber  lease and fiber  are in  place,  however  the  system is not
         operational  and no lease  payments  are  being  made on  account  of a
         dispute between Southern  California Edison Company ("SCE") and various
         property owners regarding SCE's power line right-of-way.

         The  Company's  networks are  monitored by its network  control  center
located at the Company's corporate  headquarters in Vancouver,  Washington.  The
control  center is staffed by 24 employees  and provides  network  monitoring 24
hours a day, seven days a week.  Advanced  monitoring systems allow personnel to
diagnose and resolve  problems,  generally  before customers detect a meaningful
deterioration in service quality.

         The Company  constructs,  markets and  maintains  longhaul  fiber optic
facilities in Arizona, California and Hawaii. The Company's longhaul fiber optic
facilities  currently extend over 900 route miles and approximately  1,700 route
miles are under construction and expected to become operational over the next 12
months.  The  Company  plans to  continue  to  develop  and expand its local and
longhaul network infrastructure to ultimately assemble, through a combination of
owned and leased facilities and joint ventures,  an integrated  regional network
for the on-net  provision of CLEC  services.  By building and  utilizing its own
network,  the Company reduces its reliance on the facilities of other providers,
such as the ILECs,  enhances  service to its  customers  and reduces its cost of
providing   services.   Unlike  most  fiber-based  CLECs,  which  typically  use
facilities  leased from  interexchange  carriers to carry the  majority of their
long distance  telecommunications traffic, the Company anticipates enhancing its
operating margins by routing an increasing portion of its intraregional  traffic
over its own network.

COMPETITION

         The telecommunications industry is highly competitive. In most markets,
the Company's  principal  competitor for local exchange  services is the RBOC or
the GTE  Companies.  Other  competitors  may include other CLECs,  microwave and
satellite carriers, wireless  telecommunications  providers and private networks
built by large  end-users.  Potential  competitors  (using  similar or different
technologies)  include cable television  companies,  utilities and RBOCs outside
their  current  local  service  areas.  In  addition,  the  Company  anticipates
competition  from large long distance  carriers,  such as AT&T,  MCI and Sprint,
which have begun to offer integrated local and long distance  telecommunications
services.  AT&T also has announced its intention to offer local services using a
new   wireless    technology.    Several   companies   have   begun   to   offer
telecommunications  services  over the  Internet  at rates  substantially  below
current long distance rates. Companies offering telecommunications services over
the Internet could enjoy a significant cost advantage  because at this time they
do not pay carrier  access  charges or universal  service fees.  The Company has
begun to target Tier 1 cities and  competition in such markets is expected to be
significantly  greater  than in Tier 2 and Tier 3 cities in which the Company is
currently  operating.  The influx of competitors into the Company's  markets and
into  markets  that the  Company  may  subsequently  enter  may  result  in more
participants than can ultimately be successful in a given market.  Consolidation
of telecommunications  companies and the formation of strategic alliances within
the telecommunications industry, as well as the development of new technologies,
could give rise to significant  new competitors to the Company.  In addition,  a
continuing  trend toward business  combinations  and strategic  alliances in the
telecommunications  industry  may  further  enhance  competition.  For  example,
WorldCom  acquired  MFS and  Brooks and  agreed to  acquire  MCI,  each of which
compete  with the  Company  in  several  of the  markets  in which  the  Company
operates. AT&T has announced its intention to acquire Teleport, a CLEC that also
competes with the Company in several markets.  The Company cannot determine what
effect  such  acquisitions  will  have  on  the  Company's  business,  financial
condition and results of operations.

         As a  recent  entrant  in the  integrated  telecommunications  services
industry,  the  Company  has not  achieved  and does not  expect  to  achieve  a
significant market share for any of its services. In particular,  the RBOCs, the
GTE  Companies  and  other  local   telephone   companies   have   long-standing
relationships  with their  customers,  have  financial,  technical and marketing
resources substantially greater than those of the Company, have the potential to
subsidize  competitive  services with revenues from a variety of businesses  and
currently  benefit from certain  existing  regulations that favor the ILECs over
the Company in certain  respects.  While recent  regulatory  initiatives,  which
allow CLECs such as the Company to interconnect  with ILEC  facilities,  provide
increased business opportunities

                                      -60-

<PAGE>
for the Company,  such  interconnection  opportunities  have been accompanied by
increased pricing flexibility for and relaxation of regulatory  oversight of the
ILECs.  For example,  the FCC granted ILECs  additional  flexibility  in pricing
their  interstate  special and  switched  access  services  on a central  office
specific  basis.  Under this pricing scheme,  ILECs may establish  pricing zones
based on access traffic density and charge  different prices for central offices
in each zone. On February 8, 1997, new FCC rules became effective allowing ILECs
to file  streamlined  tariffs on 15 days'  notice for rate  increases  and seven
days' notice for rate  decreases.  Unless the FCC acts during the notice period,
such tariffs become effective at its end.

         To the extent the Company  interconnects with and uses ILEC networks to
service its  customers,  the Company will be dependent  upon the  technology and
capabilities  of the  ILECs  to meet  certain  telecommunications  needs  of the
Company's  customers  and to maintain  its service  standards.  The Company will
become increasingly dependent on interconnection with ILECs as switched services
become a greater percentage of the Company's  business.  The  Telecommunications
Act imposes interconnection  obligations on ILECs, but there can be no assurance
that the  Company  will be able to obtain the  interconnection  it  requires  at
rates,  and on terms and  conditions,  that permit the Company to offer switched
services at rates that are  simultaneously  competitive and  profitable.  In the
event that the Company  experiences  difficulties  in  obtaining  high  quality,
reliable and reasonably priced service from the ILECs, the attractiveness of the
Company's services to its customers could be impaired.

         The  long   distance   telecommunications   industry   has   relatively
insignificant  barriers  to  entry,  numerous  entities  competing  for the same
customers  and a high average churn rate,  as customers  frequently  change long
distance  providers  in response to the  offering of lower rates or  promotional
incentives by  competitors.  The Company  competes  with major  carriers such as
AT&T,  MCI,  Sprint and  WorldCom,  as well as other  national and regional long
distance  carriers and resellers,  many of whom are able to provide  services at
costs that are lower than the Company's current costs. Many of these competitors
have greater financial,  technological and marketing resources than the Company.
In addition, as a result of the  Telecommunications  Act, the RBOCs are expected
to become  competitors  in the long  distance  telecommunications  industry both
outside  of  their  service  territory  and  upon the  satisfaction  of  certain
conditions,  within their service  territory.  U S WEST recently  entered into a
marketing  arrangement with Qwest under which U S WEST would market Qwest's long
distance   services   and  would  be   compensated   by   Qwest.   A  number  of
telecommunications  companies,  including the Company,  have filed suit claiming
that the  arrangement  would  effectively  allow U S WEST to offer long distance
services  before local  competition  had developed in the states it serves.  The
U.S.  District Court enjoined U S WEST's engaging in such marketing  pending the
outcome of an FCC  investigation  of the  arrangements.  SBC has  challenged the
constitutionality of the provisions  conditioning RBOC entry into in-region long
distance  service.  The district court has determined  that the provision of the
Telecommunications  Act that prohibits RBOC entry into long distance  markets is
unconstitutional. A stay of that decision has been granted pending a decision by
the Fifth Circuit.

         The Company believes that the principal  competitive  factors affecting
its long distance  operations are pricing,  customer service,  accurate billing,
clear pricing policies and, to a lesser extent, variety of services. The ability
of the Company to compete  effectively will depend upon its continued ability to
maintain high quality,  market driven  services at prices  generally equal to or
below those charged by its competitors. To maintain its competitive posture, the
Company  believes that it must be in a position to reduce its prices in order to
meet reductions in rates, if any, by others. Any such reductions could adversely
affect the Company.

         The Company's longhaul business is subject to intense competition.  See
"Risk Factors--Pricing Pressures and Risks of Industry Over-Capacity."

         The  Internet  services  market  is  highly  competitive.  There are no
substantial  barriers to entry,  and the Company expects that  competition  will
continue to intensify. The Company's competitors in this market include Internet
service providers, other telecommunications companies, online services providers
and  Internet  software  providers.  Many  of  these  competitors  have  greater
financial,  technological  and marketing  resources than those  available to the
Company.


                                      -61-

<PAGE>
         On February 25, 1998, U S WEST  petitioned the FCC to allow it to build
and operate packet- and cell-switched  data networks across LATA boundaries,  to
permit it to carry  interLATA data traffic  incident to its provision of digital
subscriber  line  services,  to not  require  it to  make  those  data  services
available  on a  discounted  resale  basis  and to not  require  it to make  the
non-bottleneck  elements of such services  available on an unbundled  basis.  On
June 9, 1998,  SBC filed a similar  petition with the FCC. The Company  provides
certain  services with which U S WEST and SBC's proposed  services would compete
if the petitions were granted by the FCC.

         The recent WTO  agreement on basic  telecommunications  services  could
increase  the  Company's   competition  for   telecommunication   services  both
domestically and  internationally.  Under this agreement,  the United States and
other   members   of   the   WTO   committed   themselves   to   opening   their
telecommunications  markets to competition and foreign ownership and to adopting
regulatory measures to protect competitors against  anticompetitive  behavior by
dominant  telephone  companies,  effective  in some cases as early as January 1,
1998.

         The Company believes that providers of wireless  services  increasingly
will offer,  in  addition to products  that  supplement  a  customer's  wireline
communications,  wireline  replacement  products  that may  result  in  wireless
services becoming the customer's primary mode of communication. Competition with
providers of wireless services may be intense.  Many of the Company's  potential
wireless competitors have substantially greater financial, technical, marketing,
sales,  manufacturing and distribution resources than the Company.  Furthermore,
the FCC has made spectrum available through public auction over the past several
years for use in wireless  communications and began offering additional spectrum
in February 1998. This additional spectrum is intended by the FCC to be used for
broadband,  data and video  transmission  but its use in wireless  local loop is
also possible.

SALES CHANNELS AND CUSTOMER SUPPORT

         The Company markets its services through five sales channels  including
a direct sales force, an inside sales (telemarketing)  group, alternate channels
including  referral  partners,  independent  agents and resellers,  a government
systems  group and a wholesale  carrier  group.  As of December  31,  1997,  the
Company had 305 sales and  marketing  employees  in 18 cities and  utilized  233
agents and independent contractors.

         The Company's  direct sales  personnel offer the Company's full line of
products  including  long  distance,  private  line,  Internet,  local  and data
transmission  services.  Sales compensation is  incentive-based  and designed to
facilitate both the acquisition and retention of customers.

         Teams of sales  engineers  and local  service  experts are available to
support the sales force in complex or more  technical  applications.  The inside
sales and  telemarketing  group and referral partner programs generate leads for
the direct sales force.  These groups also focus on smaller  customers  that may
use the full array of products but do not require extensive technical or on-site
support.

         Local  customer  service  representatives  are  assigned to  particular
customers and are supplemented by local technical sales support  personnel and a
centralized  group of customer service  representatives  located in call centers
who respond to after-hours customer inquiries and perform account maintenance.

         As of March 31, 1998, the Company had  approximately  82,000 customers,
including  approximately  47,000 long distance,  6,500 local dial tone customers
and 30,000 Internet customers (substantially all of whom are dial-up customers).
Approximately  13,000 of such customers  purchase more than one of the Company's
services.

REGULATION

         The  Company's  telecommunications  services  business  is  subject  to
varying degrees of federal, state and local regulation.


                                      -62-

<PAGE>
  FEDERAL REGULATION

         The  FCC  regulates  interstate  and  international  telecommunications
services. The Company provides service either on a private carrier basis or on a
common  carrier  basis.  In the interstate  market,  the primary  distinguishing
factor between  private  carriers and common carriers is that the former provide
customized  services to select  customers  pursuant to  individually  negotiated
contracts.  Common carriers, on the other hand, hold themselves out to serve the
public generally. The FCC imposes certain regulations on common carriers such as
the RBOCs that have some degree of market power. The FCC imposes less regulation
on common carriers without market power including, to date, CAPs/CLECs.  The FCC
requires  common carriers to receive an  authorization  to construct and operate
telecommunications  facilities  between  the  United  States  and  international
points.

         In August  1996,  the FCC released its  Interconnection  Decision.  The
Interconnection  Decision establishes rules implementing the  Telecommunications
Act requirements  that ILECs negotiate  interconnection  agreements and provides
guidelines for review of such agreements by state public utilities  commissions.
On  July  18,  1997,  the  Eighth  Circuit  vacated  certain   portions  of  the
Interconnection   Decision,   including   provisions   establishing   a  pricing
methodology  and a procedure  permitting new entrants to "pick and choose" among
various  provisions  of existing  interconnection  agreements  between ILECs and
their  competitors.  On October 14, 1997,  the Eighth  Circuit issued a decision
vacating additional FCC rules that will likely have the effect of increasing the
cost of  obtaining  the  use of  combinations  of an  ILEC's  unbundled  network
elements. The Company had negotiated a number of interconnection agreements with
ILECs  prior to the July  18th  Eighth  Circuit  decision.  The  Eighth  Circuit
decisions  create  uncertainty  about the  rules  governing  pricing,  terms and
conditions  of  interconnection  agreements,  and  could  make  negotiating  and
enforcing  such  agreements  more  difficult  and  protracted  and  may  require
renegotiation of existing agreements. There can be no assurance that the Company
will be able to obtain or enforce interconnection agreements on terms acceptable
to the Company.  The Supreme  Court has  accepted for review the Eighth  Circuit
decisions.

         In October 1996,  the FCC adopted an order in which it  eliminated  the
requirement that non-dominant  interstate  carriers such as the Company maintain
tariffs  on file  with the FCC for  domestic  interstate  services.  This  order
applies to all non-dominant interstate carriers,  including AT&T. The order does
not  apply to the RBOCs or other  local  exchange  providers.  The FCC order was
issued pursuant to authority granted to the FCC in the Telecommunications Act to
"forbear" from regulating any  telecommunications  services  provider if the FCC
determines  that  the  public  interest  will  be  served.  After  a  nine-month
transition period, relationships between interstate carriers and their customers
will be set by contract.  At that point long  distance  companies  may no longer
file with the FCC  tariffs for  interstate,  domestic,  interexchange  services.
Carriers have the option to immediately  cease filing  tariffs.  Several parties
have  filed  notices  for  reconsideration  of the FCC order  and other  parties
appealed the decision.  On February 13, 1997, the United States Court of Appeals
for the District of Columbia Circuit stayed the implementation of the FCC order.

         If  the  stay  is  lifted   and  the  FCC  order   becomes   effective,
telecommunications  carriers  such as the Company will no longer be able to rely
on the  filing  of  tariffs  with  the FCC as a means  of  providing  notice  to
customers of prices,  terms and conditions on which they offer their  interstate
services.  The  obligation to provide  non-discriminatory,  just and  reasonable
prices remains unchanged under the  Communications  Act of 1934, as amended (the
"Communications  Act").  While tariffs  provided a means of providing  notice of
prices,  terms and  conditions,  the Company has always relied  primarily on its
sales force and direct  marketing to provide such  information  to its customers
and expects to continue to do so in the future.

         The Telecommunications Act is intended to increase competition. The act
opens the local services market by requiring ILECs to permit  interconnection to
their networks and establishing ILEC obligations with respect to:


                                      -63-

<PAGE>
         RECIPROCAL COMPENSATION. Requires all ILECs and CLECs to complete calls
originated by competing  carriers under reciprocal  arrangements at prices based
on a reasonable  approximation of incremental cost or through mutual exchange of
traffic without explicit payment.

         RESALE.  Requires  all  ILECs  and  CLECs  to  permit  resale  of their
telecommunications  services without unreasonable restrictions or conditions. In
addition,  ILECs are required to offer wholesale versions of all retail services
to other  telecommunications  carriers for resale at discounted rates,  based on
the costs avoided by the ILEC in the wholesale offering.

         INTERCONNECTION.   Requires   all  ILECs  and  CLECs  to  permit  their
competitors to interconnect with their facilities.  Requires all ILECs to permit
interconnection  at any  technically  feasible point within their  networks,  on
nondiscriminatory terms, at prices based on cost (which may include a reasonable
profit).  At the option of the carrier seeking  interconnection,  collocation of
the  requesting  carrier's  equipment  in the ILECs'  premises  must be offered,
except  where the ILEC can  demonstrate  space  limitations  or other  technical
impediments to collocation.

         UNBUNDLED  ACCESS.  Requires  all  ILECs to  provide  nondiscriminatory
access to unbundled network elements (including, network facilities,  equipment,
features,  functions, and capabilities) at any technically feasible point within
their networks,  on nondiscriminatory  terms, at prices based on cost (which may
include a reasonable profit).

         NUMBER  PORTABILITY.  Requires  all ILECs and CLECs to permit  users of
telecommunications   services  to  retain  existing  telephone  numbers  without
impairment  of quality,  reliability  or  convenience  when  switching  from one
telecommunications carrier to another.

         DIALING  PARITY.  Requires  all ILECs and CLECs to  provide  "1+" equal
access to competing  providers of telephone  exchange  service and toll service,
and to provide nondiscriminatory access to telephone numbers, operator services,
directory  assistance,  and  directory  listing,  with no  unreasonable  dialing
delays.

         ACCESS  TO  RIGHTS-OF-WAY.  Requires  all  ILECs  and  CLECs to  permit
competing  carriers  access to  poles,  ducts,  conduits  and  rights-of-way  at
regulated prices.

         ILECs are required to negotiate in good faith with carriers  requesting
any or all of the above arrangements.  If the negotiating  carriers cannot reach
agreement  within  a  prescribed  time,   either  carrier  may  request  binding
arbitration of the disputed issues by the state regulatory commission.  Where an
agreement  has  not  been  reached,  ILECs  remain  subject  to  interconnection
obligations  established  by the  FCC  and  state  telecommunication  regulatory
commissions.

         On May 8, 1997, the FCC released an order  establishing a significantly
expanded  federal  telecommunications  subsidy  regime.  For  example,  the  FCC
established  new  subsidies  for  services  provided to  qualifying  schools and
libraries with an annual cap of $2.25 billion and for services provided to rural
health care providers with an annual cap of $400 million.  The FCC also expanded
the  federal  subsidies  to  low-income   consumers.   Providers  of  interstate
telecommunications  service,  such as the  Company,  as well  as  certain  other
entities,  must pay for these  programs.  The  Company's  share of these federal
subsidy funds will be based on its share of certain  defined  telecommunications
end-user  revenues.  The  revenues for the high cost and low income fund are the
Company's estimated quarterly  interstate and gross end-user  telecommunications
revenues.  The revenues for the schools and libraries and rural health care fund
are the Company's estimated quarterly  intrastate,  interstate and international
gross end-user  telecommunications  revenues. The contribution factors issued by
the FCC for the first,  second and third  quarters of 1998 are 3.19%,  3.14% and
3.14%,  respectively  for the high cost and low income  fund and .72%,  .76% and
 .75%,  respectively  for the schools,  libraries and rural  healthcare fund. The
amounts contributed may be billed to customers.  The Company has been billed for
such  contributions  and on an annualized  basis,  the amounts billed would have
represented  less than 1% of total  revenues  for  Fiscal  1997.  In the May 8th
order, the FCC also announced that it will soon revise its rules for subsidizing
service provided to consumers in

                                      -64-

<PAGE>
high cost areas.  Several parties have appealed the May 8th order.  Such appeals
have been consolidated and transferred to the United States Court of Appeals for
the Fifth  Circuit  where they are currently  pending.  In addition,  on July 3,
1997, several ILECs filed a petition for stay of the May 8th order with the FCC.
That petition is pending.

         The FCC released a Report to Congress on April 10, 1998  concerning its
implementation   of   the   telecommunications   subsidy   provisions   of   the
Telecommunications   Act.  The  FCC   clarified   that   entities  that  provide
transmission    capacity   to   Internet   service   providers   are   providing
telecommunications  services  subject  to  contribution  requirements.  The  FCC
indicated that it would address the issue of whether ISPs would  contribute to a
universal  service  fund  based on the  utilization  of their  own  transmission
facilities  at a later date and whether ISP services such as  phone-to-phone  IP
telephony  are  telecommunications  services  subject to universal  service fund
contribution and access charge payments.

         The  Telecommunications  Act also  codifies the ILECs' equal access and
nondiscrimination  obligations and preempts  inconsistent state regulation.  The
Telecommunications  Act also contains special provisions that eliminate the AT&T
Antitrust  Consent  Decree  (and  similar  antitrust  restrictions  on  the  GTE
Companies)  restricting  the RBOCs from  providing  long  distance  services and
engaging in telecommunications equipment manufacturing.  These provisions permit
a RBOC to enter the long distance market in its  traditional  service area if it
satisfies several procedural and substantive  requirements,  including obtaining
FCC approval upon a showing that facilities-based  competition is present in its
market,  that the RBOC has  entered  into  interconnection  agreements  in those
states in which it seeks long distance relief,  the  interconnection  agreements
satisfy a  14-point  "checklist"  of  competitive  requirements,  and the FCC is
satisfied  that the  RBOC's  entry into long  distance  markets is in the public
interest.  SBC,  the RBOC  serving  some of the  states  served by the  Company,
applied to the FCC for such  authority  which was  denied.  On  appeal,  the FCC
decision  was  upheld.  U S WEST,  an RBOC  serving  some  states  served by the
Company,  has  announced  its intention to seek such  authority  this year.  The
Telecommunications  Act  permits  the  RBOCs to  enter  the  out-of-region  long
distance market immediately upon its enactment.

         Under  the   Telecommunications   Act,  any  entity,   including  cable
television   companies   and   electric  and  gas   utilities,   may  enter  any
telecommunications  market,  subject to reasonable  state  regulation of safety,
quality   and   consumer    protection.    Because    implementation    of   the
Telecommunications   Act  is  subject  to  numerous  federal  and  state  policy
rulemaking proceedings and judicial review there is still uncertainty as to what
impact such legislation will have on the Company.

         Pursuant  to  authority  granted by the FCC,  the  Company  resells the
international  telecommunications  services of other common carriers between the
United  States and  international  points.  In connection  with such  authority,
certain of the  Company's  subsidiaries  have filed  tariffs  stating the rates,
terms and conditions for their  international  services.  The FCC has determined
that call  reorigination  service  using  uncompleted  call  signaling  does not
violate  United  States or  international  law, but has held that United  States
companies  providing such services must comply with the laws of the countries in
which they operate as a condition of such companies' Section 214 authorizations.

         With respect to its domestic service offerings, various subsidiaries of
the  Company  have filed  tariffs  with the FCC  stating  the  rates,  terms and
conditions for their interstate  services.  To the extent that such subsidiaries
provide intrastate services, they may be required to obtain authority from state
regulatory authorities prior to providing such services.  Such subsidiaries have
been granted intrastate toll authority in 46 states and the District of Columbia
and the  Company  is  applying  for  such  authority  in the  remaining  states,
excluding Alaska.  There can be no assurance that such state authorizations will
be granted.  In addition,  the Company has obtained  authority to provide  local
exchange  services  on a resale or  facilities-based  basis in 10 states and the
Northern Marianas Islands.

         Except in certain  designated  geographically  competitive  zones,  the
current policy of the FCC for most special access  services  dictates that ILECs
charge  all  customers  the same  price for the same  service.  Thus,  the ILECs
generally  cannot lower prices to those  customers  likely to contract for their
services  without also lowering charges for the same service to all customers in
the same geographic area, including those whose

                                      -65-

<PAGE>
telecommunications  requirements would not justify the use of such lower prices.
The FCC may, however,  alleviate this constraint on the ILECs and permit them to
offer  special rate  packages to very large  customers,  as it has done in a few
cases, or permit other forms of rate flexibility.  The FCC has adopted proposals
that  significantly   lessen  the  regulation  of  ILECs  that  are  subject  to
competition  in their  service  areas and  provide  such ILECs  with  additional
flexibility in pricing their interstate switched and special access on a central
office specific basis.

         In a  combined  Report  and Order and  Notice  of  Proposed  Rulemaking
released on December 24, 1996, the FCC made changes and proposed further changes
in the  interstate  access charge  structure.  In the Report and Order,  the FCC
removed  restrictions  on ILECs'  ability to lower access prices and relaxed the
regulation  of new switched  access  services in those  markets  where there are
other providers of access services. If this increased pricing flexibility is not
effectively  monitored by federal  regulators,  it could have a material adverse
effect on the  Company's  ability  to  compete in  providing  interstate  access
services.  On May 16, 1997, the FCC released an order revising its access charge
rate  structure.  The new rules  substantially  increase  the costs  that  ILECs
subject to the FCC's price cap rules ("price cap LECs") recover through monthly,
non-traffic  sensitive access charges and substantially  decrease the costs that
price cap LECs recover through traffic sensitive access charges. In the May 16th
order,  the FCC also announced its plan to bring  interstate  access rate levels
more in line with cost.  The plan will  include  rules that grant price cap LECs
increased pricing flexibility upon  demonstrations of increased  competition (or
potential  competition)  in  relevant  markets.  The  manner  in  which  the FCC
implements  this approach to lowering access charge levels could have a material
effect on the  Company's  ability  to  compete in  providing  interstate  access
services.  Several parties have appealed the May 16th order.  Those appeals have
been consolidated and transferred to the Eighth Circuit where they are currently
pending.

         Under the  Communications  Act and other federal  regulations,  foreign
nationals may not own more than 20% of a company, or have more than a 20% voting
interest in a company,  that directly holds a common carrier radio license.  The
Communications Act also prohibits foreign nationals from owning 25% or more of a
company which, in turn,  controls a company holding a radio license,  if the FCC
finds that such alien participation  would not serve the public interest.  Under
the WTO agreement,  the United States agreed to permit foreign  nationals to own
up to 100% of a company that directly holds a common  carrier radio license.  On
November 25, 1997, the FCC adopted rules  implementing  the WTO policies for WTO
member states to acquire up to a 100% indirect interest in a U.S. radio license.
Prior  approval  will still be  required,  however  the  application  process is
streamlined. The operations of GST Hawaii use among other facilities,  microwave
radio  facilities  operating  pursuant to FCC licenses granted to PNI, an entity
controlled  by John Warta,  a director of the Company and the  Company's  former
Chairman  of the Board and Chief  Executive  Officer.  As a result of changes in
federal  policies,  it is the  intention  of the  Company  and PNI to  reach  an
agreement to transfer such microwave  facilities and associated  licenses to the
Company,  subject to FCC approval.  The FCC also has the authority,  which it is
not  presently  exercising,  to impose  restrictions  on  foreign  ownership  of
communications  service  providers not  utilizing  radio  frequencies,  which if
exercised  could have a material  adverse effect on the Company's  business.  In
addition,  the Company may  subsequently  need to obtain radio licenses to "fill
in" certain customers in the networks that are not practical to reach by wire.

  STATE REGULATION

         The  Telecommunications  Act is intended to increase competition in the
telecommunications  industry,  especially  in the local  exchange  market.  With
respect to local services,  ILECs are required to allow interconnection to their
networks and to provide  unbundled  access to network  facilities,  as well as a
number of other  procompetitive  measures.  Because  the  implementation  of the
Telecommunications  Act is subject to numerous state  rulemaking  proceedings on
these issues, it is currently  difficult to predict how quickly full competition
for local services, including local dial tone, will be introduced.

         State  regulatory  agencies have regulatory  jurisdiction  when Company
facilities and services are used to provide  intrastate  services.  A portion of
the Company's current traffic may be classified as intrastate and therefore

                                      -66-

<PAGE>

subject  to state  regulation.  The  Company  expects  that it will  offer  more
intrastate services (including intrastate switched services) as its business and
product lines expand and state regulations are modified to allow increased local
services competition. To provide intrastate services, the Company generally must
obtain  a  CPCN  from  the  state  regulatory   agency  and  comply  with  state
requirements  for  telecommunications   utilities,   including  state  tariffing
requirements. The Company has obtained regulatory authority for its subsidiaries
to provide intrastate toll service in 46 states and the District of Columbia and
has applied for such authority in the remaining  states,  excluding  Alaska.  In
addition,  the Company has obtained authority to provide local exchange services
on a resale or  facilities-based  basis in 10 states and the  Northern  Marianas
Islands.

         ARIZONA. GST Net (AZ), Inc. ("GST Net (AZ)") has received a Certificate
of Convenience  and Necessity  ("CCN") from the Arizona  Corporation  Commission
(the "ACC") to provide jurisdictionally  intrastate special access, private line
and/or local  exchange  services in Arizona.  GST Tucson  Lightwave,  Inc. ("GST
Tucson")  has entered into a license  agreement  with Pima County (the county in
which Tucson is located)  which was  officially  recorded on July 16,  1996,  to
construct,  install, maintain and operate a fiber optics communication system in
the public right-of-way.

         CALIFORNIA.  Both GST Pacific  Lightwave,  Inc. ("GST Pacific") and GST
Telecom  California,  Inc.  ("GST  California")  have been granted  authority to
provide both  facilities-based  and resale local exchange  services in the areas
served by Pacific Bell and GTE California  Incorporated ("GTE California").  GST
California and GST Pacific have entered into an  interconnection  agreement with
GTE California which became  effective  October 17, 1996. GST California and GST
Pacific have entered into an interconnection agreement with Pacific Bell for the
State of California which became effective December 30, 1996.

         HAWAII.  The HPUC has  granted  GST Hawaii a CPCN as a carrier of voice
and data on a point to point basis in Hawaii.  Under the HPUC's rules  governing
competition in telecommunication  services,  an application by GST Hawaii for an
expanded CPCN is no longer  necessary.  GST Hawaii must file an application  for
any proposed, modified, or new tariffed service, unless ordered otherwise by the
HPUC.  GST Hawaii's CLEC tariff became  effective on September 4, 1996. The HPUC
has also  approved  GST  Hawaii's  interconnection  agreement  with GTE Hawaiian
Telephone  Company  ("GTE") and an  amendment  to the  original  interconnection
agreement  was  approved  in  October  1997.  GST  Hawaii is in the  process  of
completing its connections to GTE's Hawaiian network.

         IDAHO.  GST Telecom  Idaho,  Inc.  ("GST Idaho") has authority from the
Idaho  Public   Utilities   Commission  (the  "Idaho   Commission")  to  provide
telecommunications  services on a statewide basis to business customers with six
or more  lines.  GST  Idaho  has also  been  granted  authority  from the  Idaho
Commission to provide  telecommunications  services to customers with fewer than
six lines in the GTE Companies and U S WEST exchanges.

         NEVADA. GST Telecom Nevada,  Inc. was granted CLEC and resale authority
on  September  27,  1996,  by the  issuance  of a CPCN  by  the  Public  Service
Commission of Nevada.

         NEW MEXICO.  On October 23,  1995,  GST  Telecom New Mexico,  Inc.  was
granted a CPCN from the New  Mexico  State  Corporation  Commission  to  provide
intrastate,  non-switched private line services. Its authority to provide resold
interexchange  services was approved on January 6, 1997 and its  statewide  CLEC
authority was granted on May 30, 1997.

         OREGON.  On March 5, 1997,  GST  Telecom  Oregon,  Inc.  ("GST  Telecom
Oregon") was granted CLEC  authority in  competitive  zones.  On May 4, 1998 GST
Telecom Oregon was granted CLEC authority to all authorized exchanges in Oregon.

         TEXAS. The Texas Public Utilities Commission on August 9, 1996 approved
the  application of GST Telecom  Texas,  Inc. ("GST Texas") for a certificate of
operating authority on a statewide basis to resell

                                      -67-

<PAGE>
telecommunications  services.  GST  Texas'  authority  was  expanded  to include
facilities-based services on June 4, 1997. GST Action Telecom, Inc. holds resale
and  facilities-based  authority in exchanges  served by the GTE  Companies  and
certain other carriers.

         UTAH.  GST Telecom  Utah,  Inc.  obtained  competitive  local  exchange
authority in December 1996 to provide services statewide,  with the exception of
exchanges with fewer than 5,000 access lines owned or controlled by an ILEC with
fewer than 30,000 access lines within the State.

         WASHINGTON.   GST  Telecom  Washington,   Inc.  ("GST  Washington")  is
currently  authorized  to provide  both  resold and  facilities-based  services,
including local exchange services,  message toll,  operator services and carrier
access services. GST Washington's request for competitive status was approved on
June 11, 1997. ICON holds facilities-based and resale authority with competitive
status in Washington.

  LOCAL REGULATION

         The networks are subject to numerous local regulations such as building
codes  and  licensing.  Such  regulations  vary on a city by city and  county by
county  basis.  The  Company  needs to obtain  rights-of-way  over  private  and
publicly   owned  land  to  permit   the   installation   of  the  fiber   optic
telecommunication equipment.

GST GLOBAL TELECOMMUNICATIONS INC.

         As of February 28, 1998,  the Company had invested  approximately  $3.7
million in Global to acquire 3.6 million  common shares and warrants to purchase
750,000  additional  shares. At that date, Global had approximately 14.7 million
shares outstanding  (approximately 28.7 million shares on a fully diluted basis,
excluding any  additional  shares that may be issued to the Company as discussed
below).  The Company asserts that Global is to issue to the Company a minimum of
3,000,000 and up to an additional 5,000,000 common shares of Global,  subject to
regulatory approval,  in consideration for the transfer by the Company to Global
of its  rights to acquire  the Bestel  Project.  Global  has  asserted  that the
Company is only entitled to receive up to 3,000,000  additional common shares of
Global,  subject  to the  approval  of its  board of  directors  and  regulatory
approval. To date, Global has not issued any of its common shares to the Company
in respect of such  transfer.  The Company has  established  a committee  of its
directors to  investigate  and negotiate a resolution of this matter or, failing
such  resolution,  to pursue such  remedies as may be  available  to the Company
against Global and others.  Such committee's  investigation and discussions with
Global are ongoing.

         In 1996,  the Company  transferred to Global the right to subscribe for
49%  of  the  outstanding  shares  of  Bestel,   S.A.  de  C.V.  ("Bestel")  for
approximately $13.7 million in consideration of the issuance of common shares of
Global. At that time, the Company controlled Global and certain of the directors
and officers of the Company were also  directors or officers of Global;  however
at present there are no common directors and officers of the Company and Global.
The  remaining 51% of Bestel is held by  Occidental  Telecommunicacion,  S.A. de
C.V. ("Occidental"). In addition, in connection with the rights to subscribe for
shares of Bestel, Global was required to and the Company understands that it has
loaned $36.0 million to Bestel. Bestel is in the process of constructing a 2,270
kilometer fiber optic telecommunications  network in Mexico which, when operable
will provide  capability for Bestel to become a  facilities-based  long distance
carrier.

MAGNACOM

         Magnacom,  a company 99% owned by PNI,  which is in turn  controlled by
John Warta, a director of the Company and the Company's  former  Chairman of the
Board and Chief  Executive  Officer,  holds 30 MHz (C Block) PCS licenses for 11
markets in Arizona,  Arkansas,  New Mexico,  Oregon and Utah.  Magnacom  was the
winning bidder for 10 MHz licenses in the FCC's F Block in 13 markets in Hawaii,
Idaho, Oregon and Washington in an FCC auction.  Magnacom has obtained authority
to effect the Reorganization with PCS Plus Holdings, another

                                      -68-

<PAGE>
company  controlled by Mr. Warta and of which Mr. Warta and Stephen Irwin,  Vice
Chairman  of the Board and  Secretary  of the  Company,  serve as  officers  and
directors.

         Magnacom  and the  Company  have  entered  into the  Magnacom  Services
Agreement  with an initial term of five years  pursuant to which (i) the Company
has been  designated a non-exclusive  reseller of PCS telephone  services in the
markets in which Magnacom has obtained  licenses,  and (ii) Magnacom has granted
the Company a right of first refusal to provide switched local and long distance
services and other enhanced  telecommunications  services,  to all of Magnacom's
resellers in markets where the Company has  operational  networks  provided that
the  Company's  rates and other terms of service are  competitive.  Magnacom has
agreed  to sell PCS  minutes  to the  Company  at $.05 per  minute,  subject  to
downward  adjustment  to equal the most  favorable  rates  offered to Magnacom's
other resellers (but in no event less than Magnacom's  cost). In connection with
the Magnacom  Services  Agreement,  as of March 31,  1998,  the Company had paid
Magnacom  approximately $14.4 million as prepayments for future PCS services. In
addition, the Company has made advances to Magnacom aggregating $818,000 at July
28, 1998 on account of certain operating expenses of Magnacom.

         The  Company has been  granted an option to acquire up to PNI's  entire
interest in Magnacom (currently 99%). The exercise of the option will be subject
to compliance with all applicable FCC regulations  relating to prior approval of
any transfer of control of PCS  licenses,  including  those  relating to foreign
ownership or control and  requirements  regarding the ownership of C and F block
licenses and interests in C and F block licenses.  Accordingly,  until such time
as FCC regulations or administrative  action permit the Company to own in excess
of 25% of  Magnacom,  the option by its terms is limited  to a 24%  interest  in
Magnacom  and the option is to be  modified  to provide  that the Company own no
more than a 25% interest in Magnacom or PCS Plus Holdings upon exercise thereof.
The Company,  Magnacom,  PNI and a prospective financing source are currently in
negotiations  with respect to the modification of existing  arrangements.  There
can be no assurance that such negotiations will result in such a modification or
that  such  a  modification   will  be  more  favorable  to  the  Company.   See
"Business--Magnacom."

         See  "Management's  Discussion and Analysis of Financial  Condition and
Results of Operations" for a discussion of a warrant to purchase up to 4% of the
then  outstanding  Common Shares that may be issued in connection with financing
for Magnacom.

         The provision of wireless  telecommunications  service by Magnacom will
be dependent upon its ability to obtain the financing necessary to make payments
to the FCC under the terms of its  licenses,  to obtain  working  capital and to
build the required  facilities,  including  the  purchase of  telecommunications
equipment. There can be no assurance that Magnacom will obtain such financing or
be able to provide PCS  services.  In such event,  the Company  would  likely be
unable to recover its payments to Magnacom.

EMPLOYEES

         As of March  31,  1998,  the  Company  and its  subsidiaries  had 1,167
full-time  employees.  None  of  such  employees  is  covered  by  a  collective
bargaining agreement.  The Company considers its relationship with its employees
to be satisfactory.

FACILITIES

         The Company owns a building comprising 60,000 square feet in Vancouver,
Washington.  The Company leases space containing its principal executive offices
at 4001 Main Street,  Vancouver,  Washington 98663. Its telephone number at that
address is (360) 906-7100.

         The  Company  leases  offices   elsewhere  in  the  United  States,  in
Vancouver,  British  Columbia  and in Japan,  pursuant to leases which expire on
various dates through December 31, 2007. The Company's  current aggregate annual
rental expense is approximately $4.6 million.  The Company is negotiating leases
for  spaces in  California  and  Washington  for an  aggregate  additional  cost
expected to be approximately $112,000 per year.


                                      -69-

<PAGE>
LEGAL PROCEEDINGS

         On  August  24,  1995,   Aerotel,   Ltd.  and  Aerotel   U.S.A.,   Inc.
(collectively,  "Aerotel")  commenced  an action  against NACT and a customer of
NACT in the  United  States  District  Court,  Southern  District  of New  York,
alleging that  telephone  systems  manufactured  and sold by NACT  incorporating
prepaid debit card features  infringe upon Aerotel's  patent which was issued in
November 1987 (the "Aerotel  Patent").  The initial  complaint  further  alleged
defamation and unfair  competition as a result of a Special Report  disseminated
by NACT to its customers and tortious  interference  with  prospective  business
relations,  alleging  that NACT  induced  third  parties  to  abandon  licensing
negotiations  with Aerotel.  Aerotel  sought  injunctive  relief,  damages in an
unspecified  amount,  damages of up to three times the damages found for willful
infringement  of the  Aerotel  Patent and an order  requiring  NACT to publish a
written  apology to Aerotel.  NACT filed an answer and  Counterclaim in which it
denied  infringement  of the Aerotel Patent and sought judgment that the Aerotel
Patent is invalid and  unenforceable  and that Aerotel has misused its patent in
violation of antitrust laws. NACT also denied that it had committed  defamation,
unfair competition or tortious interference with prospective business relations.
On May 3, 1996,  NACT  served its motion  for  summary  judgment.  The Court has
indicated it will deny such motion,  although the actual ruling has not yet been
received. In August 1997, Aerotel amended its complaint to include as defendants
the Company and GST USA as well as Kyle Love,  the former  President of NACT and
Dr. Thomas E. Sawyer,  a former  director of the Company and NACT and the former
Chairman and Chief  Executive  Officer of NACT.  The amended  pleadings  seek in
excess of $18.7  million in damages and allege that the Company and GST USA have
infringed  the  Aerotel  patent,  aided  and  abetted  infringement  by  others,
including NACT, and  participated  in, and aided and abetted,  alleged  tortious
conduct by NACT.  The  Company,  GST USA,  Dr.  Sawyer and Mr.  Love have served
answers  denying  all  material  allegations  and  intend to defend  vigorously.
Pretrial  discovery has commenced and is scheduled to be completed in 1998.  The
case is not expected to be tried until late 1998 at the earliest.  NACT's patent
counsel  believes  that NACT has valid  defenses to Aerotel  claims.  If upheld,
these defenses would also be valid for all defendants.  An unfavorable  decision
in this action could have a material adverse effect on the Company.

         In connection  with the NACT Sale,  the Company and World Access,  Inc.
entered into an  agreement  whereby the Company  generally  will bear 50% of any
damages  in  the  action,   including   reasonable   attorneys'  fees,   losses,
liabilities, claims and assessments, royalties and license fees provided that if
a court  determines  that  the  Aerotel  Patent  is  valid  and that it has been
infringed,  the Company's  liability  associated with future royalties,  license
fees, refunds and cost of product replacement or modification is limited to $2.0
million.

         On or about  February 25, 1997, U S WEST filed a  declaratory  judgment
action against members of the ACC, the ACC, ACSI,  Brooks and the Company in the
United States  District  Court in Arizona.  The District  Court  consolidated  a
number of similar lawsuits filed by U S WEST against other CLECs, including MFS,
Sprint,  MCI  and  AT&T.  U  S  WEST  alleges  that  the  ACC  has  approved  an
interconnection  agreement that unlawfully  requires U S WEST to resell services
below  cost,  imposes  resale  restrictions  and  denies U S WEST  recovery  for
construction and  implementation  costs,  unlawfully treats the cost recovery of
access  revenues  for interim  number  portability,  requires U S WEST to obtain
additional rights of way or build additional facilities solely to provide access
to the  Company,  and amounts to a taking of U S WEST's  property  without  just
compensation.  U S WEST seeks a  declaratory  judgment  stating that the ACC has
violated  the  Telecommunications  Act and  that  the ACC has  taken U S  WEST's
property without providing just compensation.  U S WEST also seeks an injunction
prohibiting  all  defendants,  including the Company,  from taking any action to
enforce any of the order's  allegedly  unlawful  provisions.  On March 31, 1998,
several other CLEC  defendants'  motions to dismiss the US WEST  complaint  were
granted in their entirety.  Many of the counts in the US WEST complaint  against
the  Company are  identical  to those  dismissed  by the court in the other CLEC
defendants'  cases.  U S WEST and the Company have  entered  into a  stipulation
which  provides  that the  District  Court can  dismiss  all counts  against the
Company  which are similar to counts the District  Court has  dismissed  against
other CLEC defendants. U S WEST and the Company have asked the District Court to
approve the stipulation. The Company has filed a motion to dismiss the remaining
two counts of U S WEST's  complaint.  Should U S WEST  prevail  in its suit,  it
could have an adverse impact on the Company's operations in Arizona.

         On or about  February  26, 1998,  GST Tucson,  GST Net(AZ) and WorldCom
filed a declaratory judgment action against the ACC, members of the ACC, and U S
WEST in the United States District Court in Arizona. The

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<PAGE>
Company  alleges that the ACC approved U S WEST unbundled  network  elements and
wholesale  discount  rates  inconsistent  with  federal  law,  and failed to set
geographically deaveraged unbundled network element rates as required by federal
law. The Company seeks a declaratory judgment that the ACC's action violates the
Telecommunications  Act and an injunction  requiring the ACC to adopt  compliant
rates.  U S WEST has answered the  complaint and the ACC has moved to dismiss on
jurisdictional   grounds.   This   lawsuit  has  been   consolidated   with  the
above-described  U S WEST declaratory  judgment  action.  Should the Company not
prevail in its suit, it could have an adverse impact on the Company's operations
in Arizona.

         On or about  April 10,  1998,  U S WEST  filed a  declaratory  judgment
action against GST Net (AZ), GST Telecom,  GST Tucson,  the ACC and its members,
and other Arizona CLECs in the United States District Court of Arizona. U S WEST
asserts that the ACC adopted a U S WEST permanent unbundled network element rate
order which denies it full  compensation for nonrecurring  charges,  loop costs,
reciprocal compensation for transport and termination of local traffic, customer
transfer charges, and the costs of implementing its interconnection  obligations
with CLECs in  violation of the  Telecommunications  Act and state law. U S WEST
seeks a declaratory  judgment stating that the ACC's action violates federal and
state law and an  injunction  preventing  all  defendants  from taking action to
enforce the ACC's rulings.  The Company has answered the  complaint.  Should U S
WEST  prevail  in its suit,  it could have an  adverse  impact on the  Company's
operations in Arizona.

         On or about  April 8,  1997,  U S WEST filed a state  court  proceeding
against the ACC,  individual members of the ACC, and GST Net (AZ), which holds a
CCN to provide local exchange service in Arizona. In its complaint appealing the
ACC's  February 6, 1997  decision  and order  granting GST Net (AZ) its CCN, U S
WEST alleges that the ACC's action violates certain  requirements of the Arizona
Constitution  relating  to rate of return  regulation,  carrier  of last  resort
obligations,  and equal protection. The appeal seeks to subject GST Net (AZ) and
U S WEST to identical  forms of  regulation,  treating  both  carriers as either
traditional  monopoly carriers or as co-equal competitive  companies.  The state
court  consolidated  the case with a number of  substantially  similar  lawsuits
filed against other CLECs,  including  MFS,  Sprint,  MCI and AT&T. GST Net (AZ)
answered U S WEST's complaint on August 6, 1997,  alleging,  among other things,
that U S  WEST's  complaint  is  preempted  by the  Telecommunications  Act.  On
February 27, 1998,  GST Net (AZ) joined in the other CLECs'  motions to dismiss.
Should U S WEST  prevail in its appeal,  it could have an adverse  impact on the
Company's operations in Arizona;  however, the magnitude thereof is uncertain at
this time.

         The  Company is not a party to any other  material  legal  proceedings,
nor,  to the  knowledge  of the  Company,  are any  material  legal  proceedings
threatened  against the Company.  The Company is a party to various  proceedings
before the public  utilities  commissions  of the states in which it provides or
proposes to provide  telecommunications  services.  These proceedings  typically
relate to  licensure  of the  Company  or others  and to the  regulation  of the
provision of telecommunications service.


                                      -71-

<PAGE>
                 CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

         On June 23, 1994, the Company entered into agreements (the "GST Telecom
Agreements") with Pacwest (an entity controlled by John Warta, a director of the
Company  and the  Company's  former  Chairman  of the Board and Chief  Executive
Officer),  pursuant to which the Company and Pacwest  formed a new  corporation,
GST Telecom, for the purpose of developing  telecommunications  networks.  Under
the terms of the agreements,  Pacwest contributed the stock of GST Pacific,  GST
Tucson and GST Hawaii and the Company made certain funding  commitments  (all of
which were  subsequently  satisfied)  and  contributed  its 60%  interest in GST
Tucson,  for which the  Company  received  60% and Pacwest  received  40% of the
capital stock of GST Telecom.  Effective June 1, 1995,  the Company  acquired an
additional  20%  ownership  interest in GST Telecom from Pacwest in exchange for
1,000,000  Common  Shares.  Effective  October 20,  1995,  the Company  acquired
Pacwest's  remaining  20% interest in GST Telecom for which Pacwest was eligible
to receive  up to a maximum of  1,000,000  Common  Shares  (valued at $10.00 per
Common Share) based upon the fair market value of a 20% interest in GST Telecom,
as  determined  by  independent  appraisal.  The Company  engaged an  investment
banking firm to provide such appraisal, which appraisal valued such 20% interest
at not less than $10 million. In November 1996,  1,000,000 Common Shares,  which
had been  held in  escrow  since  October  20,  1995,  were  distributed  to the
designees of Pacwest, principally Messrs. Warta and Sander.

         Prior to his  employment  with  the  Company,  Mr.  Warta  served  as a
consultant  to Tomen  for  which he was paid a fee.  He no  longer  acts in such
capacity.  Mr. Warta served as an unpaid consultant from June 1997 to March 1998
and as a paid  consultant from June 1994 to June 1997.  Simultaneously  with the
execution of the GST Telecom Agreements,  Pacwest contracted with the Company to
receive a fee equal to 1% of the aggregate debt and equity financing provided by
Tomen to the Company.  During the last two fiscal  years,  the Company  incurred
approximately  $632,000  of such  fees  to  Pacwest.  Such  agreement  has  been
terminated. Mr. Sander, Senior Vice President and Treasurer of the Company, is a
member of Pacwest and participated in such fees.

         Under the  Tomen  Facility,  Tomen has the right to act as  procurement
agent for each network project it finances.  The Company has purchased equipment
through Tomen at competitive prices.

         The  operations of the Company's  Hawaiian  microwave  network  require
radio licenses from the FCC. PNI, an entity  controlled by Mr. Warta, a director
of the  Company  and the  Company's  former  Chairman  of the  Board  and  Chief
Executive Officer, holds the Hawaii microwave licenses. Under agreements between
the  Company and PNI,  the  Company  pays a monthly fee of $3,000 to PNI and PNI
pays an offsetting monthly fee to the Company,  in connection with the operation
and use of the network.  As a result of changes in federal  policies,  it is the
intention  of the  Company  and PNI to  reach  an  agreement  to  transfer  such
microwave  facilities  and  associated  licenses to the Company,  subject to FCC
approval.

         See  "Business--Magnacom" for a description of transactions relating to
Magnacom and PCS Plus Holdings,  companies  controlled by John Warta, a director
of the  Company  and the  Company's  former  Chairman  of the  Board  and  Chief
Executive Officer.

         In November 1996, 1,500,000 of the common shares of Global owned by the
Company were  purchased at cost from W. Gordon  Blankstein,  formerly a director
and Chairman of the Company.

         Stephen  Irwin,  Vice  Chairman and  Secretary  of the  Company,  is of
counsel to the law firm of Olshan  Grundman Frome & Rosenzweig  LLP,  counsel to
the  Company.  In  connection  with  such  services,  the  Company  paid fees of
approximately  $2.3  million and $2.1  million for Fiscal 1996 and Fiscal  1997,
respectively.

         Peter E.  Legault,  a director of the  Company,  is a director and Vice
President of Thomson  Kernaghan,  which was engaged by the Company during Fiscal
1996 and Fiscal 1997 to solicit sources of financing for the

                                      -72-

<PAGE>
Company, and was one of the placement agents for the Company's sale of special
warrants in October 1996. In connection with such services, such firm received
fees of approximately $500,000 during Fiscal 1997.

         In May  1997,  the  Company  loaned  $100,000  to  Joseph  Basile,  the
President,  Chief  Operating  Officer,  acting  Chief  Executive  Officer  and a
director of the  Company,  to enable him to purchase a new primary  residence in
the Vancouver, Washington area. The loan matures in March 2000, accrues interest
at a rate of 6% per annum and is to be  prepaid  to the  extent of the  proceeds
from the  sale of Mr.  Basile's  former  residence  and from the sale of  Common
Shares acquired upon exercise of options held by Mr. Basile.  Such loan was made
pursuant to the terms of his employment  agreement  with the Company,  which was
approved by the Board of Directors of the Company.

         As of March 1, 1998, the Company has loaned $72,000 to Daniel Trampush,
Senior Vice President and Chief Financial Officer of the Company,  to enable him
to purchase a new primary residence in the Vancouver,  Washington area. The loan
is interest-free and matures in March 2002 and is to be prepaid to the extent of
the proceeds  from the sale of Common  Shares  acquired upon exercise of options
held by Mr. Trampush. Such loan was made pursuant to the terms of his employment
agreement with the Company,  which was approved by the Board of Directors of the
Company.

         In September  1997, an aggregate of 750,000  Common Shares was released
from  escrow to Ian  Watson  and W.  Gordon  Blankstein,  former  directors  and
officers of the  Company,  and to Mr.  Blankstein's  brother,  Robert,  a former
employee of the Company.  Such Common Shares were issued to provide incentive in
the development of the Company's business and had been held in escrow since 1990
under the policies of the VSE. Such Common Shares were released  under the terms
of the applicable escrow agreement.  In accordance with U.S.  generally accepted
accounting   principles,   the  Company  recognized   compensation   expense  of
approximately $7.4 million when such Common Shares were released.


                                      -73-

<PAGE>
                          DESCRIPTION OF THE NEW NOTES

         The Old Notes were issued under the  Indenture  among GST  Network,  as
issuer,  GST USA, GST and United States Trust Company of New York. The New Notes
will be issued  under the  Indenture,  which will be  qualified  under the Trust
Indenture  Act of  1939,  as  amended  (the  "Trust  Indenture  Act"),  upon the
effectiveness of the Registration  Statement of which this Prospectus is a part.
The form and terms of the New Notes are the same in all material respects as the
form and terms of the Old Notes, except that the offer and sale of the New Notes
will have been registered under the Securities Act and, therefore, the New Notes
will not bear legends restricting transfer thereof. Upon the consummation of the
Exchange  Offer,  Holders of Notes will not be entitled to  registration  rights
under,  or the  contingent  increase in interest rate provided  pursuant to, the
Registration Rights Agreement.  The New Notes will evidence the same debt as the
Old Notes and will be treated as a single class under the Indenture with any Old
Notes that remain outstanding.

         The terms of the Notes  include those stated in the Indenture and those
made part of the Indenture by reference to the Trust  Indenture Act as in effect
on the date of the  Indenture.  The  Notes  are  subject  to all such  terms and
reference is made to the Indenture  and the Trust  Indenture Act for a statement
thereof.  A copy of the  Indenture  has been  filed  with the  Commission  as an
exhibit to the Registration Statement of which this Prospectus forms a part. The
following  summary  describes  the material  provisions of the Indenture and the
Notes.  Whenever particular defined terms of the Indenture not otherwise defined
herein are referred to, such defined terms are incorporated herein by reference.

GENERAL

         The Notes are, or will be, secured,  unsubordinated  obligations of the
Issuer,  initially  limited  to $500.0  million  aggregate  principal  amount at
maturity,  and will mature on May 1, 2008.  Although for United  States  federal
income tax purposes a significant amount of original issue discount,  taxable as
ordinary  income,  will be recognized by a holder as such discount  accrues from
the Closing  Date, no interest will be payable on the Notes prior to November 1,
2003. From and after May 1, 2003,  interest on the Notes will accrue at the rate
of 10 1/2% from May 1, 2003 or from the most  recent  interest  payment  date to
which interest has been paid or provided for,  payable  semiannually (to Holders
of record on the close of  business  on the April 15 or October  15  immediately
preceding  the  interest  payment  date) on May 1 and  November  1 of each year,
commencing November 1, 2003. Interest will be computed on the basis of a 360-day
year of twelve 30-day months. See  "--Registration  Rights" for a description of
the circumstances  under which the interest rate on the Notes may be permanently
increased by .5% per annum.

         Principal  of,  premium,  if any,  and  interest  on the Notes  will be
payable, and the Notes may be exchanged or transferred,  at the office or agency
of the Issuer in the Borough of Manhattan, The City of New York (which initially
will be the corporate  trust office of the Trustee at 114 West 47th Street,  New
York, New York 10036-1532);  provided that, at the option of the Issuer, payment
of  interest  may be made by check  mailed to the  respective  addresses  of the
Holders as each such address appears in the Security Register.

         The Notes are issued only in fully registered form, without coupons, in
denominations  of  $1,000  of  principal  amount at  maturity  and any  integral
multiple thereof. See "--Book-Entry;  Delivery and Form." No service charge will
be made for any  registration  of transfer or exchange of Notes,  but the Issuer
may  require  payment of a sum  sufficient  to cover any  transfer  tax or other
similar governmental charge payable in connection therewith.

         The  Issuer  may,  subject  to  the  covenants  described  below  under
"Covenants" and applicable law, issue additional Notes under the Indenture.  The
Notes  offered  hereby and any  additional  Notes  subsequently  issued would be
treated as a single class for all purposes under the Indenture.


                                      -74-

<PAGE>
STRUCTURE AND SECURITY

         The Indenture  provides that on the Closing Date,  GST Network must use
all of the net proceeds  from the May Offering (in addition to any cash on hand)
to purchase Pledged  Securities and pledge the Pledged Securities to the Trustee
for the benefit of the Holders of the Notes pursuant to a Collateral  Pledge and
Security  Agreement  dated as of the  Closing  Date from GST  Network  to United
States Trust Company of New York, as Trustee. The Pledged Securities are pledged
pursuant  to the  Pledge  Agreement  and are held by the  Trustee  in the Pledge
Account.  Interest earned on the Pledged  Securities will be added to the Pledge
Account.  In addition,  in  consideration  for GST Network  making the financing
through the May Offering  available to GST USA and for GST Network  facilitating
the purchase of GST USA's equipment, GST USA has agreed to reimburse GST Network
for any fees or expenses incurred by GST Network in connection  therewith and to
pay GST  Network a  commitment  fee in an amount  equal to 4.5% per annum of the
amount by which the aggregate  principal amount at maturity of the Notes exceeds
the aggregate  principal amount of all Intercompany  Notes then held as security
for the Notes. Such commitment fee shall be paid  semiannually,  in arrears,  on
each May 1 and November 1, commencing  November 1, 1998 and shall be paid by GST
USA  issuing to GST  Network  Fee Notes  guaranteed  by GST;  provided  that the
aggregate  principal amount of the Fee Notes shall be reduced to the extent such
principal  amount exceeds the aggregate  principal  amount of the Notes less (x)
the aggregate  principal amount of Pledged  Securities and cash then held in the
Pledge  Account,  together with accrued  interest  thereon and (y) the aggregate
principal amount of all  Intercompany  Notes then held as security for the Notes
plus the amount of interest that will accrue on such  Intercompany  Notes by May
1,  2003.  The Fee Notes  will  mature on May 1, 2003 and there  will not be any
payment of interest prior to maturity.

         Upon  written  request  from  GST  Network  to  the  Trustee,   Pledged
Securities  will be released from the Pledge  Account to GST Network in order to
finance  the  cost  (including,   without   limitation,   the  cost  of  design,
development,    construction,    acquisition,   installation   or   integration)
(collectively,  "Acquired  Equipment Cost") of  telecommunications  inventory or
equipment  purchased  or  leased  by GST  Network  ("Acquired  Equipment").  The
Acquired Equipment primarily will consist of fiber optic cable, digital switches
and digital  automatic  cross connect  equipment.  The release of amounts to GST
Network in order to finance Acquired Equipment Cost will occur concurrently with
the  expenditure  of funds by GST Network with respect to such costs and will be
in an amount equal to such costs.  Immediately  upon the acquisition of Acquired
Equipment,  GST Network will grant a first  priority  security  interest in such
Acquired  Equipment  to the Trustee for the benefit of the Holders of the Notes.
GST USA must  purchase  all  Acquired  Equipment  from GST Network at a purchase
price equal to the Acquired  Equipment Cost for such Acquired  Equipment and the
obligation  to pay the purchase  price shall be evidenced by an  unsubordinated,
secured promissory note (an "Intercompany  Note") in a principal amount equal to
the Acquired  Equipment  Cost,  issued by GST USA and fully and  unconditionally
guaranteed by GST. Each Intercompany  Note will mature on May 1, 2003.  Interest
on each Intercompany Note will accrue at 12 1/2% compounded semiannually on each
May 1 and  November 1, but will not be payable in cash until the maturity of the
Intercompany  Note. Each  Intercompany  Note will be secured by a first priority
security  interest  in  all  Acquired  Equipment   purchased  by  GST  USA.  The
Intercompany  Notes will be prepaid if the maturity of the Notes is  accelerated
because  an Event of  Default  has  occurred  with  respect  to the Notes or the
payment of  principal,  premium or  interest on the Notes is  otherwise  due and
payable.  GST Network  shall  grant a first  priority  security  interest in the
Pledged Securities, the Pledge Account, the Fee Notes and all Intercompany Notes
to the Trustee  for the benefit of the Holders of the Notes to secure  repayment
of the  principal  of,  premium and  interest on the Notes.  On May 1, 2003,  or
earlier if  permitted  under the  Existing  Indentures,  GST USA will assume and
become the  direct  obligor  on the  Notes,  GST will fully and  unconditionally
guarantee  the  Notes on an  unsubordinated  basis,  GST USA will  grant a first
priority  security  interest in all  Acquired  Equipment  to the Trustee for the
benefit of the Holders of the Notes and GST Network will be  liquidated  and its
assets distributed to GST USA.


                                      -75-

<PAGE>
MANDATORY REDEMPTION

         If on May 1, 2003 GST USA is prohibited by the Existing Indentures from
assuming all of the Notes,  GST Network  will redeem,  upon not less than 10 nor
more than 30 days'  notice,  the  portion of the Notes that cannot be assumed at
105.250% of their principal  amount plus accrued and unpaid interest to the date
of redemption.

OPTIONAL REDEMPTION

         The Notes will be redeemable  at the option of the Issuer,  in whole or
in part,  at any time or from time to time, on or after May 1, 2003 and prior to
maturity,  upon not less than 30 nor more than 60 days' prior  notice  mailed by
first-class  mail to each  Holder's  last  address as it appears in the Security
Register,  at the  following  Redemption  Prices  (expressed in  percentages  of
principal  amount at maturity),  plus accrued and unpaid interest thereon to the
Redemption  Date  (subject  to the right of  Holders  of record on the  relevant
Regular  Record  Date  that is on or prior  to the  Redemption  Date to  receive
interest  due on an Interest  Payment  Date),  if redeemed  during the  12-month
period commencing May 1 of the years set forth below:

YEAR                                             REDEMPTION PRICE

2003                                                105.250%
2004                                                103.500%
2005                                                101.750%
2006 and thereafter                                 100.000%

         In the case of any  partial  redemption,  selection  of the  Notes  for
redemption  will be made by the  Trustee by lot or by such  other  method as the
Trustee in its sole discretion shall deem to be fair and  appropriate;  provided
that no Note of $1,000 in principal amount at maturity or less shall be redeemed
in part.  If any Note is to be redeemed in part only,  the notice of  redemption
relating to such Note shall state the portion of the principal amount thereof to
be redeemed.  A new Note in principal  amount  equal to the  unredeemed  portion
thereof will be issued in the name of the Holder  thereof upon  cancellation  of
the original Note.

         The Notes  will also be subject to  redemption  as a whole,  but not in
part,  at the option of GST, at any time after GST USA has become the obligor on
the Notes and GST has guaranteed  the Notes,  at 100% of their Accreted Value on
the Redemption Date,  together with accrued interest thereon,  to the Redemption
Date, in the event GST has become or would become  obligated to pay, on the next
date on which any amount would be payable  with  respect to the Note  Guarantee,
any  Additional  Amounts  as a result  of a change  in the laws  (including  any
regulations  promulgated  thereunder) of Canada (or any political subdivision or
taxing  authority  thereof or therein),  or any change in any official  position
regarding the application or interpretation  of such laws or regulations,  which
change  is  announced  or  becomes  effective  on or  after  the  date  of  this
Prospectus.

GUARANTEE

         GST  USA's   obligations  under  the  Notes,  the  Fee  Notes  and  the
Intercompany  Notes  will  be  fully  and   unconditionally   guaranteed  on  an
unsubordinated   basis  by  GST  (collectively,   the  "Note  Guarantee").   The
obligations  of GST under the Note  Guarantee  will be  limited  to the  maximum
amount which,  after giving effect to all other contingent and fixed liabilities
of GST and after giving effect to any collections from or payments made by or on
behalf  of the  Issuer  in  respect  of  obligations  of the  Issuer  under  the
Indenture,  will result in the  obligations  of GST under the Note Guarantee not
constituting a fraudulent  conveyance or fraudulent  transfer  under  applicable
law.

REGISTRATION RIGHTS

         GST Network, GST and GST USA have agreed with the Placement Agents, for
the  benefit of the  Holders,  that they will use their best  efforts,  at their
cost, to file and cause to become effective a registration statement with

                                      -76-

<PAGE>
respect to a registered  offer (the "Exchange  Offer") to exchange the Old Notes
for New Notes with terms  identical to the Notes (except that the New Notes will
not bear legends  restricting  the  transfer  thereof).  Upon such  registration
statement being declared effective, the Issuer shall offer the Exchange Notes in
return for  surrender  of the Notes.  Such offer shall  remain open for not less
than 20 business  days after the date notice of the Exchange  Offer is mailed to
Holders.  For each Note duly surrendered to the Issuer under the Exchange Offer,
the Holder will receive an Exchange Note of equal principal  amount at maturity.
The accreted  value of each  Exchange  Note shall be identical  to, and shall be
determined in the same manner as, the Accreted Value of the Notes so surrendered
and exchanged  therefor.  Interest on each Exchange Note shall be calculated and
paid in the same manner as interest on the notes so  surrendered  and  exchanged
therefor.  In the  event  that  applicable  interpretations  of the staff of the
Securities and Exchange  Commission (the  "Commission") do not permit the Issuer
to effect the Exchange Offer, or under certain other circumstances, GST Network,
GST and GST USA shall,  at their cost, use their best efforts to cause to become
effective a shelf registration  statement (the "Shelf  Registration  Statement")
with  respect to resales  of the Notes and to keep such  registration  statement
effective  until the  expiration  of the time period  referred to in Rule 144(k)
under the Securities Act after the Closing Date. The Issuer shall,  in the event
of such a shelf  registration,  provide to each Holder copies of the prospectus,
notify  each  Holder  when the Shelf  Registration  Statement  for the Notes has
become  effective  and take  certain  other  actions as are  required  to permit
resales  of the  Notes.  A Holder  that  sells its Notes  pursuant  to the Shelf
Registration  Statement  generally  will be  required  to be named as a  selling
security  holder  in the  related  prospectus  and to  deliver a  prospectus  to
purchasers,  will be subject to certain of the civil liability  provisions under
the  Securities  Act in  connection  with  such  sales  and will be bound by the
provisions of the  Registration  Rights  Agreement that are applicable to such a
Holder (including certain indemnification obligations).

         In the event that the  Exchange  Offer is not  consummated  and a Shelf
Registration Statement is not declared effective on or prior to the date that is
six months  after the  Closing  Date,  interest  (in  addition to the accrual of
original issue discount  during the period ending May 1, 2003 and in addition to
interest  otherwise  due on the Notes  after such date) will  accrue  commencing
November 4, 1998,  at an annual rate of .5% per annum of the  Accreted  Value on
the  preceding  Semi-Annual  Accrual  Date,  on the Notes and be payable in cash
semiannually on May 1 and November 1 of each year, commencing May 1, 1999, until
the  Exchange  Offer is  consummated  or the  Shelf  Registration  Statement  is
declared effective.

         If GST Network, GST and GST USA effect the Exchange Offer, they will be
entitled to close the  Exchange  Offer 20 business  days after the  commencement
thereof,  provided  that  they  have  accepted  all  Notes  theretofore  validly
surrendered  in  accordance  with the  terms of the  Exchange  Offer.  Notes not
tendered in the  Exchange  Offer shall bear  interest at the rate of 10 1/2% per
annum, subject to all of the terms and conditions specified in the Indenture and
to the transfer restrictions described in "Transfer Restrictions."

         This summary of certain provisions of the Registration Rights Agreement
does not  purport to be  complete  and is subject  to, and is  qualified  in its
entirety  by  reference  to,  all  the  provisions  of the  Registration  Rights
Agreement, a copy of which is available from the Issuer upon request.

RANKING

         The Notes are, or will be, secured,  unsubordinated indebtedness of the
Issuer.  The Note Guarantee will be unsecured,  unsubordinated  indebtedness  of
GST, will rank pari passu in right of payment with all unsecured, unsubordinated
indebtedness,  and  will be  senior  in  right of  payment  to all  subordinated
indebtedness,  of GST, including the Convertible Notes and the Accrual Notes. As
of March 31, 1998, GST had $796.9 million of indebtedness  outstanding,  GST USA
had  $623.1  million  of  indebtedness   outstanding  and  GST  Network  had  no
indebtedness.  After  GST USA  becomes a direct  obligor  on the Notes on May 1,
2003, or earlier if permitted under the Existing  Indentures,  the Notes and the
Note Guarantee will be effectively  subordinated to all  liabilities  (including
trade  payables)  of GST  USA's  subsidiaries.  At March  31,  1998,  GST  USA's
subsidiaries other than GST Network had $442.2 million of liabilities (excluding
intercompany payables), including $401.0 million of indebtedness.  After GST USA
becomes a direct  obligor on the Notes in the event the  holders of the Notes or
the Trustee foreclose on

                                      -77-

<PAGE>
the collateral securing the Notes and such collateral is insufficient to pay all
amounts  due with  respect to the Notes,  the  holders of the Notes will have an
unsecured  unsubordinated  claim for the amount  still owing with respect to the
Notes. See "Risk  Factors--Substantial  Indebtedness," "-- Possible Inability to
Service Debt;  Refinancing  Risks," "--  Insufficiency of Acquired  Equipment to
Satisfy the Notes upon  Liquidation," "-- Structure of GST Network,  GST USA and
GST; Secured Indebtedness;  Ranking of Notes," "Capitalization" and "Description
of Certain  Indebtedness and Redeemable Preferred Shares." Prior to the time GST
USA becomes a direct obligor on the Notes, in the event the holders of the Notes
or  the  Trustee  foreclose  on the  collateral  securing  the  Notes  and  such
collateral is insufficient to pay all amounts due on the Notes, the Holders will
not have a claim  against GST USA or GST under the Notes or the Note  Guarantee.
See "Risk Factors--Possible Inability of GST USA to Assume, GST to Guarantee and
GST Network to Redeem the Notes."

CERTAIN DEFINITIONS

         Set forth  below is a summary of certain of the  defined  terms used in
the covenants and other  provisions of the  Indenture.  Reference is made to the
Indenture for the full definition of all terms as well as any other  capitalized
terms used herein for which no definition is provided.

         "Accreted Value" is defined to mean, for any Specified Date, the amount
calculated  pursuant  to (i),  (ii),  (iii) or (iv)  below  for each  $1,000  of
principal amount at maturity of the Notes:

                  (i) if the  Specified  Date  occurs  on  one  or  more  of the
         following dates (each a "Semi-Annual Accrual Date"), the Accreted Value
         will  equal the  amount set forth  below for such  Semi-Annual  Accrual
         Date:

                  SEMI-ANNUAL                                 ACCRETED
                  ACCRUAL DATE                                  VALUE

                  November 1, 1998                            $ 630.95
                  May 1, 1999                                   664.08
                  November 1, 1999                              698.94
                  May 1, 2000                                   735.64
                  November 1, 2000                              774.26
                  May 1, 2001                                   814.91
                  November 1, 2001                              857.69
                  May 1, 2002                                   902.72
                  November 1, 2002                              950.11
                  May 1, 2003                                $1,000.00

                  (ii) if the Specified Date occurs before the first Semi-Annual
         Accrual Date,  the Accreted Value will equal the sum of (a) $599.99 and
         (b) an amount  equal to the product of (1) the  Accreted  Value for the
         first  Semi-Annual  Accrual  Date  less  $599.99  MULTIPLIED  by  (2) a
         fraction, the numerator of which is the number of days from the Closing
         Date to the  Specified  Date,  using a 360-day  year of  twelve  30-day
         months, and the denominator of which is the number of days elapsed from
         the Closing Date to the first Semi-Annual Accrual Date, using a 360-day
         year of twelve 30-day months;

                  (iii) if the  Specified  Date occurs  between two  Semi-Annual
         Accrual  Dates,  the  Accreted  Value  will  equal  the  sum of (a) the
         Accreted Value for the Semi-Annual  Accrual Date immediately  preceding
         such  Specified  Date and (b) an amount equal to the product of (1) the
         Accreted Value for the immediately  following  Semi-Annual Accrual Date
         less the  Accreted  Value  for the  immediately  preceding  Semi-Annual
         Accrual Date  multiplied  by (2) a fraction,  the numerator of which is
         the number of days from the

                                      -78-

<PAGE>
         immediately  preceding  Semi-Annual Accrual Date to the Specified Date,
         using a 360-day year of twelve 30-day  months,  and the  denominator of
         which is 180; or

                  (iv) if the Specified  Date occurs after the last  Semi-Annual
         Accrual Date, the Accreted Value will equal $1,000.

         "Accrual Notes" means the 12 3/4% Senior Subordinated Accrual Notes due
2007 of GST issued pursuant to the Accrual Notes Indenture.

         "Accrual Notes  Indenture" means the indenture dated as of November 19,
1997 between GST and United States Trust Company of New York.

         "Adjusted Consolidated Net Income" means, for any period, the aggregate
net  income (or loss) of GST and its  Restricted  Subsidiaries  for such  period
determined in conformity  with GAAP;  provided that the following items shall be
excluded in computing  Adjusted  Consolidated Net Income (without  duplication):
(i) the net  income of any  Person  (other  than net  income  attributable  to a
Restricted  Subsidiary)  in  which  any  Person  (other  than  GST or any of its
Restricted  Subsidiaries) has an interest and the net income of any Unrestricted
Subsidiary,   except  to  the  extent  of  the  amount  of  dividends  or  other
distributions actually paid to GST or any of its Restricted Subsidiaries by such
other Person, or such Unrestricted  Subsidiary,  during such period; (ii) solely
for the purposes of  calculating  the amount of Restricted  Payments that may be
made  pursuant  to  clause  (C) of the first  paragraph  of the  "Limitation  on
Restricted  Payments"  covenant described below (and in such case, except to the
extent includable pursuant to clause (i) above), the net income (or loss) of any
Person accrued prior to the date it becomes a Restricted Subsidiary or is merged
into or  consolidated  with GST or any of its Restricted  Subsidiaries or all or
substantially  all of the property and assets of such Person are acquired by GST
or any of its  Restricted  Subsidiaries;  (iii) the net income of any Restricted
Subsidiary to the extent that the declaration or payment of dividends or similar
distributions  by such  Restricted  Subsidiary  of such net income is not at the
time  permitted by the  operation of the terms of its charter or any  agreement,
instrument,  judgment,  decree, order, statute, rule or governmental  regulation
applicable  to such  Restricted  Subsidiary;  (iv) any  gains or  losses  (on an
after-tax  basis)  attributable  to Asset  Sales;  (v)  except for  purposes  of
calculating  the amount of  Restricted  Payments  that may be made  pursuant  to
clause (C) of the first  paragraph of the  "Limitation  on Restricted  Payments"
covenant  described  below, any amount paid or accrued as dividends on Preferred
Stock of GST or any  Restricted  Subsidiary  owned by Persons other than GST and
any of its  Restricted  Subsidiaries;  and  (vi)  all  extraordinary  gains  and
extraordinary losses.

         "Adjusted  Consolidated  Net Tangible Assets" means the total amount of
assets of GST and its Restricted  Subsidiaries  (less  applicable  depreciation,
amortization and other valuation reserves),  except to the extent resulting from
write-ups of capital assets  (excluding  write-ups in connection with accounting
for  acquisitions  in conformity with GAAP),  after deducting  therefrom (i) all
current   liabilities  of  GST  and  its  Restricted   Subsidiaries   (excluding
intercompany  items) and (ii) all goodwill,  trade names,  trademarks,  patents,
unamortized  debt  discount and expense and other like  intangibles,  all as set
forth on the  quarterly  or  annual  consolidated  balance  sheet of GST and its
Restricted  Subsidiaries,  prepared in  conformity  with GAAP and most  recently
filed with the  Commission  pursuant to the  "Commission  Reports and Reports to
Holders" covenant described below.

         "Affiliate"  means, as applied to any Person, any other Person directly
or indirectly  controlling,  controlled  by, or under direct or indirect  common
control  with,  such  Person.   For  purposes  of  this  definition,   "control"
(including,  with correlative meanings, the terms "controlling," "controlled by"
and  "under  common  control  with"),  as  applied  to  any  Person,  means  the
possession,  directly  or  indirectly,  of the  power to  direct  or  cause  the
direction of the  management  and policies of such Person,  whether  through the
ownership of voting securities, by contract or otherwise.

         "Asset  Acquisition"  means  (i)  an  investment  by  GST or any of its
Restricted  Subsidiaries in any other Person pursuant to which such Person shall
become a Restricted  Subsidiary  of GST or shall be merged into or  consolidated
with GST or any of its  Restricted  Subsidiaries;  provided  that such  Person's
primary business is related,

                                      -79-

<PAGE>
ancillary  or  complementary  to  the  businesses  of  GST  and  its  Restricted
Subsidiaries on the date of such investment or (ii) an acquisition by GST or any
of its  Restricted  Subsidiaries  of the property and assets of any Person other
than GST or any of its Restricted Subsidiaries that constitute substantially all
of a division or line of business of such Person; provided that the property and
assets acquired are related, ancillary or complementary to the businesses of GST
and its Restricted Subsidiaries on the date of such acquisition.

         "Asset Sale" means any sale,  transfer or other disposition  (including
by  way  of  merger,   consolidation  or  sale-leaseback  transactions)  in  one
transaction or a series of related  transactions by GST or any of its Restricted
Subsidiaries to any Person other than GST or any of its Restricted  Subsidiaries
of (i) all or any of the Capital Stock of any Restricted Subsidiary, (ii) all or
substantially all of the property and assets of an operating unit or business of
GST or any of its Restricted  Subsidiaries or (iii) any other property or assets
of GST or any of its  Restricted  Subsidiaries  outside the  ordinary  course of
business of GST or such  Restricted  Subsidiary  and, in each case,  that is not
governed  by  the   provisions   of  the   Indenture   applicable   to  mergers,
consolidations  and sales of assets of GST; provided that "Asset Sale" shall not
include (A) sales or other  dispositions  of  inventory,  receivables  and other
current assets or (B) sales or other  dispositions  of assets with a fair market
value (as certified in an Officers' Certificate) not in excess of $1 million; or
(C) sales of Acquired Equipment by GST Network to GST USA in accordance with the
terms of the  Indenture;  or (D)  sales or other  dispositions  of assets to the
extent GST or a Restricted  Subsidiary receives  consideration at least equal to
the fair  market  value of the assets  sold or disposed  of,  provided  that the
consideration  received  consists  of property  or assets  (other  than  current
assets) of a nature or type or that are used in a business (or a company  having
property  or assets of a nature or type,  or engaged in a  business)  similar or
related to the nature or type of the property and assets of, or business of, GST
and its  Restricted  Subsidiaries  existing  on the  date of such  sale or other
disposition.

         "Average Life" means, at any date of determination  with respect to any
debt security,  the quotient obtained by dividing (i) the sum of the products of
(a) the  number of years  from such date of  determination  to the dates of each
successive  scheduled principal payment of such debt security and (b) the amount
of such principal payment by (ii) the sum of all such principal payments.

         "Capital Stock" means, with respect to any Person,  any and all shares,
interests,  participations or other  equivalents  (however  designated,  whether
voting or  non-voting)  in equity of such  Person,  whether now  outstanding  or
issued  after the date of the  Indenture,  including,  without  limitation,  all
Common Stock and Preferred Stock.

         "Capitalized  Lease" means, as applied to any Person,  any lease of any
property (whether real, personal or mixed) of which the discounted present value
of the rental  obligations of such Person as lessee, in conformity with GAAP, is
required to be capitalized on the balance sheet of such Person; and "Capitalized
Lease  Obligations" means the discounted present value of the rental obligations
under such lease.

         "Change  of  Control"  means  such time as (i) a  "person"  or  "group"
(within the meaning of Sections  13(d) and 14(d)(2) of the Exchange Act) becomes
the  ultimate  "beneficial  owner" (as defined in Rule 13d-3 under the  Exchange
Act) of Voting Stock representing more than 30% of the total voting power of the
Voting  Stock  of GST on a fully  diluted  basis;  (ii)  individuals  who on the
Closing Date constitute the Board of Directors  (together with any new directors
whose  election by the Board of  Directors or whose  nomination  for election by
GST's  shareholders was approved by a vote of at least two-thirds of the members
of the Board of Directors then in office who either were members of the Board of
Directors on the Closing Date or whose  election or nomination  for election was
previously  so  approved)  cease for any reason to  constitute a majority of the
members of the Board of  Directors  then in  office;  or (iii) all of the Common
Stock of GST USA or GST Network is not beneficially owned by GST.

         "Closing  Date" means May 4, 1998, the date on which the Old Notes were
originally issued under the Indenture.


                                      -80-

<PAGE>
         "Consolidated EBITDA" means, for any period, the sum of the amounts for
such period of (i) Adjusted  Consolidated Net Income, (ii) Consolidated Interest
Expense,  to the  extent  such  amount  was  deducted  in  calculating  Adjusted
Consolidated  Net  Income,  (iii)  income  taxes,  to the extent such amount was
deducted in  calculating  Adjusted  Consolidated  Net Income  (other than income
taxes (either  positive or negative)  attributable to either  extraordinary  and
non-recurring gains or losses or sales of assets), (iv) depreciation expense, to
the extent such amount was deducted in  calculating  Adjusted  Consolidated  Net
Income,  (v)  amortization  expense,  to the extent such amount was  deducted in
calculating Adjusted  Consolidated Net Income, and (vi) all other non-cash items
reducing  Adjusted  Consolidated  Net Income (other than items that will require
cash  payments and for which an accrual or reserve is, or is required by GAAP to
be, made), less all non-cash items increasing Adjusted  Consolidated Net Income,
all  as  determined  on  a  consolidated   basis  for  GST  and  its  Restricted
Subsidiaries  in  conformity  with  GAAP;   provided  that,  if  any  Restricted
Subsidiary  is not a Wholly Owned  Restricted  Subsidiary,  Consolidated  EBITDA
shall be reduced (to the extent not otherwise  reduced in accordance  with GAAP)
by an amount  equal to (A) the amount of the  Adjusted  Consolidated  Net Income
attributable to such Restricted Subsidiary multiplied by (B) the quotient of (1)
the number of shares of outstanding  Common Stock of such Restricted  Subsidiary
not  owned  on the  last  day of  such  period  by GST or any of its  Restricted
Subsidiaries  divided by (2) the total  number of shares of  outstanding  Common
Stock of such Restricted Subsidiary on the last day of such period.

         "Consolidated  Interest  Expense" means, for any period,  the aggregate
amount of  interest  in  respect  of  Indebtedness  (including  amortization  of
original  issue  discount on any  Indebtedness  and the interest  portion of any
deferred  payment  obligation,  calculated  in  accordance  with  the  effective
interest  method of accounting;  all  commissions,  discounts and other fees and
charges  owed  with  respect  to  letters  of  credit  and  bankers'  acceptance
financing;  the  net  costs  associated  with  Interest  Rate  Agreements;   and
Indebtedness  that is  Guaranteed  or  secured  by GST or any of its  Restricted
Subsidiaries)  and all but the  principal  component  of  rentals  in respect of
Capitalized  Lease  Obligations  paid,  accrued or scheduled to be paid or to be
accrued by GST and its Restricted  Subsidiaries  during such period;  excluding,
however, (i) any amount of such interest of any Restricted Subsidiary if the net
income of such Restricted  Subsidiary is excluded in the calculation of Adjusted
Consolidated Net Income pursuant to clause (iii) of the definition  thereof (but
only in the same proportion as the net income of such  Restricted  Subsidiary is
excluded from the  calculation of Adjusted  Consolidated  Net Income pursuant to
clause (iii) of the definition thereof) and (ii) any premiums, fees and expenses
(and any  amortization  thereof)  payable in connection with the offering of the
Notes,  all as determined on a consolidated  basis (without  taking into account
Unrestricted Subsidiaries) in conformity with GAAP.

         "Consolidated   Net  Worth"  means,  at  any  date  of   determination,
shareholders'  equity as set forth on the most recently  available  quarterly or
annual consolidated balance sheet of GST and its Restricted  Subsidiaries (which
shall  be as of a date  not  more  than  90  days  prior  to the  date  of  such
computation,  and which shall not take into account Unrestricted  Subsidiaries),
less  any  amounts  attributable  to  Redeemable  Stock or any  equity  security
convertible  into or exchangeable for  Indebtedness,  the cost of treasury stock
and the principal  amount of any promissory  notes  receivable  from the sale of
Capital  Stock of GST or any of its  Restricted  Subsidiaries,  each  item to be
determined in conformity  with GAAP  (excluding the effects of foreign  currency
exchange  adjustments  under Financial  Accounting  Standards Board Statement of
Financial Accounting Standards No. 52).

         "Convertible  Notes" means the 13 7/8% Convertible Senior  Subordinated
Discount  Notes  due  2005  of GST  issued  pursuant  to the  Convertible  Notes
Indenture.

         "Convertible  Notes  Indenture"  means the convertible  notes indenture
dated December 19, 1995 among GST, as issuer, GST USA, as guarantor,  and United
States Trust Company of New York.

         "Default"  means any event that is, or after  notice or passage of time
or both would be, an Event of Default.

         "Development  Company"  means a  Restricted  Subsidiary  whose  primary
business is the  development,  ownership  and  operation of  alternative  access
telecommunications networks.


                                      -81-

<PAGE>
         "Existing   Indentures"  means,   collectively  the  Convertible  Notes
Indenture,  the Senior Notes  Indenture,  the Secured  Notes  Indenture  and the
Accrual Notes Indenture.

         "fair  market  value"  means  the  price  that  would  be  paid  in  an
arm's-length  transaction  between  an  informed  and  willing  seller  under no
compulsion to sell and an informed and willing buyer under no compulsion to buy,
as   determined  in  good  faith  by  the  Board  of  Directors  of  GST  (whose
determination shall be conclusive) and evidenced by a Board Resolution.

         "Fee Notes" means the intercompany  notes due May 1, 2003 issued to GST
Network in  payment of the  commitment  fees by GST USA and  guaranteed  by GST;
provided that the aggregate  principal  amount of such notes shall be reduced to
the extent the  aggregate  principal  amount  exceeds  the  principal  amount at
maturity of the Notes less (x) the principal  amount of Pledged  Securities  and
cash then held in the Pledge Account, together with accrued interest thereon and
(y) the principal amount of all Intercompany Notes then held as security for the
Notes plus the amount of interest that will accrue on such Intercompany Notes by
May 1, 2003.

         "GAAP" means  generally  accepted  accounting  principles in the United
States of  America  as in  effect as of the  Closing  Date,  including,  without
limitation, those set forth in the opinions and pronouncements of the Accounting
Principles Board of the American  Institute of Certified Public  Accountants and
statements and pronouncements of the Financial  Accounting Standards Board or in
such other statements by such other entity as approved by a significant  segment
of the  accounting  profession.  All ratios and  computations  contained  in the
Indenture  shall be computed in  conformity  with GAAP  applied on a  consistent
basis, except that calculations made for purposes of determining compliance with
the terms of the covenants and with other  provisions of the Indenture  shall be
made without giving effect to (i) the  amortization of any expenses  incurred in
connection with the offering of the Notes and (ii) except as otherwise provided,
the amortization of any amounts  required or permitted by Accounting  Principles
Board Opinion Nos. 16 and 17.

         "Guarantee"  means any  obligation,  contingent  or  otherwise,  of any
Person directly or indirectly  guaranteeing any Indebtedness or other obligation
of any other Person and, without  limiting the generality of the foregoing,  any
obligation,  direct or indirect,  contingent or otherwise, of such Person (i) to
purchase or pay (or advance or supply funds for the purchase or payment of) such
Indebtedness or other obligation of such other Person (whether arising by virtue
of partnership arrangements,  or by agreements to keep-well, to purchase assets,
goods,  securities  or  services,  to  take-or-pay,  or  to  maintain  financial
statement conditions or otherwise) or (ii) entered into for purposes of assuring
in any other manner the obligee of such  Indebtedness or other obligation of the
payment  thereof or to protect such obligee  against loss in respect thereof (in
whole or in  part);  provided  that  the  term  "Guarantee"  shall  not  include
endorsements  for collection or deposit in the ordinary course of business.  The
term "Guarantee" used as a verb has a corresponding meaning.

         "Incur"  means,  with respect to any  Indebtedness,  to incur,  create,
issue,  assume,  guarantee or otherwise become liable for or with respect to, or
become  responsible  for,  the  payment  of,  contingently  or  otherwise,  such
Indebtedness,  including an  "incurrence"  of Indebtedness by reason of a Person
becoming a Restricted Subsidiary;  provided that neither the accrual of interest
nor the accretion of original  issue  discount shall be considered an Incurrence
of Indebtedness.

         "Indebtedness"  means,  with  respect  to any  Person  at any  date  of
determination  (without  duplication),  (i) all  indebtedness of such Person for
borrowed  money,  (ii)  all  obligations  of such  Person  evidenced  by  bonds,
debentures,  notes or other similar  instruments,  (iii) all obligations of such
Person in respect of letters of credit or other similar  instruments  (including
reimbursement  obligations with respect  thereto),  (iv) all obligations of such
Person to pay the  deferred and unpaid  purchase  price of property or services,
which  purchase price is due more than six months after the date of placing such
property in service or taking  delivery and title  thereto or the  completion of
such  services,  except Trade  Payables,  (v) all  obligations of such Person as
lessee under Capitalized  Leases, (vi) all Indebtedness of other Persons secured
by a Lien on any  asset of such  Person,  whether  or not such  Indebtedness  is
assumed by such Person;  provided that the amount of such Indebtedness  shall be
the lesser of (A) the

                                      -82-

<PAGE>
fair market value of such asset at such date of determination and (B) the amount
of such Indebtedness, (vii) all Indebtedness of other Persons Guaranteed by such
Person to the extent such  Indebtedness  is Guaranteed by such Person and (viii)
to the extent not  otherwise  included  in this  definition,  obligations  under
Currency Agreements and Interest Rate Agreements.  The amount of Indebtedness of
any  Person at any date  shall be the  outstanding  balance  at such date of all
unconditional  obligations  as described  above and,  with respect to contingent
obligations, the maximum liability upon the occurrence of the contingency giving
rise to the obligation,  provided (A) that the amount outstanding at any time of
any Indebtedness  issued with original issue discount is the face amount of such
Indebtedness less the unamortized portion of the original issue discount of such
Indebtedness  at the time of its issuance as determined in conformity with GAAP,
(B)  money  borrowed  and  set  aside  at  the  time  of the  Incurrence  of any
Indebtedness  in order to pre-fund the payment of interest as such  Indebtedness
shall be deemed not to be  "Indebtedness"  and (C) that  Indebtedness  shall not
include any liability for federal, state, local or other taxes.

         "Indebtedness to EBITDA Ratio" means, as at any date of  determination,
the ratio of (i) the aggregate  amount of Indebtedness of GST and its Restricted
Subsidiaries  on a  consolidated  basis  as at the  date of  determination  (the
"Transaction  Date")  to (ii) the  Consolidated  EBITDA of GST for the then most
recent four full fiscal  quarters for which reports have been filed  pursuant to
the "Commission  Reports and Report to Holders"  covenant  described below (such
four full fiscal  quarter  period being  referred to herein as the "Four Quarter
Period");  provided that (x) pro forma effect shall be given to any Indebtedness
Incurred from the beginning of the Four Quarter Period  through the  Transaction
Date  (including any  Indebtedness  Incurred on the  Transaction  Date),  to the
extent  outstanding on the Transaction Date, (y) if during the period commencing
on the first day of such Four Quarter Period through the  Transaction  Date (the
"Reference  Period"),  GST  or any of its  Restricted  Subsidiaries  shall  have
engaged in any Asset Sale,  Consolidated EBITDA for such period shall be reduced
by an amount equal to the EBITDA (if positive),  or increased by an amount equal
to the EBITDA (if negative),  directly  attributable to the assets which are the
subject of such Asset Sale as if such Asset Sale had  occurred  on the first day
of such Reference  Period or (z) if during such  Reference  Period GST or any of
the Restricted Subsidiaries shall have made any Asset Acquisition,  Consolidated
EBITDA  of GST  shall  be  calculated  on a pro  forma  basis  as if such  Asset
Acquisition and any Incurrence of Indebtedness to finance such Asset Acquisition
had taken place on the first day of such Reference Period.

         "Intercompany  Notes" means the promissory notes due May 1, 2003 issued
to GST Network by GST USA and guaranteed by GST.

         "Investment" in any Person means any direct or indirect  advance,  loan
or other extension of credit (including, without limitation, by way of Guarantee
or similar  arrangement;  but  excluding  advances to  customers in the ordinary
course of  business  that are,  in  conformity  with GAAP,  recorded as accounts
receivable on the balance sheet of the Issuer or its Restricted Subsidiaries) or
capital  contribution  to (by means of any transfer of cash or other property to
others or any  payment  for  property  or  services  for the  account  or use of
others),  or any  purchase  or  acquisition  of  Capital  Stock,  bonds,  notes,
debentures or other similar instruments issued by, such Person and shall include
(i) the designation of a Restricted Subsidiary as an Unrestricted Subsidiary and
(ii) the fair market value of the Capital Stock (or any other  Investment)  held
by GST and its  Restricted  Subsidiaries  of any Person  that has ceased to be a
Restricted  Subsidiary by reason of any transaction permitted by clause (iii) of
the  "Limitation  on the  Issuance  and  Sale of  Capital  Stock  of  Restricted
Subsidiaries"   covenant.  For  purposes  of  the  definition  of  "Unrestricted
Subsidiary"  and the  "Limitation  on Restricted  Payments"  covenant  described
below, (i)  "Investment"  shall include the fair market value of the assets (net
of liabilities to GST or any of its Restricted  Subsidiaries)  of any Restricted
Subsidiary of GST at the time that such  Restricted  Subsidiary is designated an
Unrestricted  Subsidiary  and shall  exclude the fair market value of the assets
(net of  liabilities)  of any  Unrestricted  Subsidiary  at the time  that  such
Unrestricted  Subsidiary  is  designated  a Restricted  Subsidiary  and (ii) any
property  transferred to or from an Unrestricted  Subsidiary  shall be valued at
its fair market value at the time of such  transfer,  in each case as determined
by the Board of Directors in good faith.


                                      -83-

<PAGE>
         "Lien" means any mortgage, pledge, security interest, encumbrance, lien
or charge of any kind (including,  without  limitation,  any conditional sale or
other title retention  agreement or lease in the nature  thereof,  any sale with
recourse against the seller or any Affiliate of the seller,  or any agreement to
give any security interest).

         "Net Cash  Proceeds"  means,  (a) with  respect to any Asset Sale,  the
proceeds of such Asset Sale in the form of cash or cash  equivalents,  including
payments in respect of deferred payment obligations (to the extent corresponding
to the principal, but not interest, component thereof) when received in the form
of cash or cash equivalents  (except to the extent such obligations are financed
or sold with recourse to GST or any Restricted Subsidiary) and proceeds from the
conversion  of  other   property   received  when  converted  to  cash  or  cash
equivalents,  net of (i)  brokerage  commissions  and  other  fees and  expenses
(including fees and expenses of counsel and investment  bankers) related to such
Asset  Sale,  (ii)  provisions  for all taxes  (whether  or not such  taxes will
actually be paid or are payable) as a result of such Asset Sale  without  regard
to  the   consolidated   results  of  operations  of  GST  and  its   Restricted
Subsidiaries, taken as a whole, (iii) payments made to repay Indebtedness or any
other  obligation  outstanding at the time of such Asset Sale that either (A) is
secured by a Lien on the  property  or assets sold or (B) is required to be paid
as a result of such sale and (iv)  appropriate  amounts to be provided by GST or
any Restricted  Subsidiary as a reserve against any liabilities  associated with
such   Asset   Sale,   including,   without   limitation,   pension   and  other
post-employment  benefit  liabilities,   liabilities  related  to  environmental
matters and liabilities under any  indemnification  obligations  associated with
such Asset Sale, all as determined in conformity  with GAAP and (b) with respect
to any issuance or sale of Capital Stock,  the proceeds of such issuance or sale
in the  form of cash or cash  equivalents,  including  payments  in  respect  of
deferred payment obligations (to the extent corresponding to the principal,  but
not  interest,  component  thereof)  when  received  in the form of cash or cash
equivalents  (except to the extent such  obligations  are  financed or sold with
recourse  to the Issuer or any  Restricted  Subsidiary)  and  proceeds  from the
conversion  of  other   property   received  when  converted  to  cash  or  cash
equivalents,  net  of  attorneys'  fees,  accountants'  fees,  underwriters'  or
placement agents' fees,  discounts or commissions and brokerage,  consultant and
other fees  incurred in  connection  with such issuance or sale and net of taxes
paid or payable as a result thereof.

         "Offer to Purchase" means an offer to purchase Notes by the Issuer from
the  Holders  commenced  by  mailing a notice  to the  Trustee  and each  Holder
stating: (i) the covenant pursuant to which the offer is being made and that all
Notes validly  tendered  will be accepted for payment on a pro rata basis;  (ii)
the  purchase  price and the date of purchase  (which shall be a Business Day no
earlier than 30 days nor later than 60 days from the date such notice is mailed)
(the "Payment  Date");  (iii) that any Note not tendered will continue to accrue
interest (or original issue discount)  pursuant to its terms;  (iv) that, unless
the Issuer defaults in the payment of the purchase price,  any Note accepted for
payment  pursuant to the Offer to Purchase  shall cease to accrue  interest  (or
original  issue  discount)  on and  after the  Payment  Date;  (v) that  Holders
electing to have a Note  purchased  pursuant  to the Offer to  Purchase  will be
required to surrender such Note,  together with the form entitled "Option of the
Holder to Elect Purchase" on the reverse side thereof  completed,  to the Paying
Agent at the address  specified  in the notice prior to the close of business on
the Business Day immediately  preceding the Payment Date; (vi) that Holders will
be entitled to withdraw their election if the Paying Agent  receives,  not later
than the close of business on the third Business Day  immediately  preceding the
Payment Date, a telegram,  facsimile  transmission  or letter  setting forth the
name of such Holder,  the principal amount of Notes delivered for purchase and a
statement  that such  Holder is  withdrawing  his  election  to have such  Notes
purchased;  and (vii) that Holders whose Notes are being  purchased only in part
will be issued new Notes equal in principal  amount to the  unpurchased  portion
thereof;  provided that each Note purchased and each new Note issued shall be in
a principal amount at maturity of $1,000 or integral multiples  thereof.  On the
Payment Date,  the Issuer shall (i) accept for payment on a pro rata basis Notes
or portions thereof tendered pursuant to an Offer to Purchase; (ii) deposit with
the Paying  Agent money  sufficient  to pay the  purchase  price of all Notes or
portions thereof so accepted;  and (iii) deliver,  or cause to be delivered,  to
the Trustee all Notes or portions thereof so accepted together with an Officers'
Certificate specifying the Notes or portions thereof accepted for payment by the
Issuer. The Paying Agent shall promptly mail to the Holders of Notes so accepted
payment in an amount equal to the purchase price, and the Trustee shall promptly
authenticate  and mail to such Holders a new Note equal in  principal  amount to
any  unpurchased  portion  of the Note  surrendered;  provided  that  each  Note
purchased and each new Note issued shall be in a principal amount at maturity of
$1,000 or integral

                                      -84-

<PAGE>

multiples thereof.  The Issuer will publicly announce the results of an Offer to
Purchase as soon as practicable after the Payment Date. The Trustee shall act as
the Paying  Agent for an Offer to  Purchase.  The Issuer  will  comply with Rule
14e-1  under the  Exchange  Act and any other  securities  laws and  regulations
thereunder to the extent such laws and regulations are applicable,  in the event
that  the  Issuer  is  required  to  repurchase  Notes  pursuant  to an Offer to
Purchase.

         "Permitted   Investment"  means  (i)  an  Investment  in  a  Restricted
Subsidiary or a Person which will, upon the making of such Investment,  become a
Restricted  Subsidiary or be merged or consolidated  with or into or transfer or
convey all or substantially  all its assets to, GST or a Restricted  Subsidiary;
provided  that  such  person's  primary   business  is  related,   ancillary  or
complementary  to the businesses of GST and its Restricted  Subsidiaries  on the
date of such Investment; (ii) a Temporary Cash Investment; (iii) payroll, travel
and similar  advances  to cover  matters  that are  expected at the time of such
advances  ultimately  to be treated as expenses in  accordance  with GAAP;  (iv)
loans or advances to employees  made in the ordinary  course of business that do
not exceed $1 million in the aggregate at any time  outstanding;  and (v) stock,
obligations or securities received in satisfaction of judgments.

         "Permitted Liens" means (i) Liens for taxes, assessments,  governmental
charges or claims that are being  contested in good faith by  appropriate  legal
proceedings promptly instituted and diligently conducted and for which a reserve
or other appropriate provision,  if any, as shall be required in conformity with
GAAP shall have been made;  (ii)  statutory  Liens of  landlords  and  carriers,
warehousemen,  mechanics,  suppliers,  materialmen,  repairmen or other  similar
Liens arising in the ordinary course of business and with respect to amounts not
yet delinquent or being contested in good faith by appropriate legal proceedings
promptly  instituted and  diligently  conducted and for which a reserve or other
appropriate  provision,  if any, as shall be required  in  conformity  with GAAP
shall have been made;  (iii) Liens  incurred or  deposits  made in the  ordinary
course of  business  in  connection  with  workers'  compensation,  unemployment
insurance and other types of social  security;  (iv) Liens  incurred or deposits
made to secure the performance of tenders, bids, leases, statutory or regulatory
obligations,   bankers'  acceptances,   surety  and  appeal  bonds,   government
contracts,  performance  and  return-of-money  bonds and other  obligations of a
similar  nature  incurred  in the  ordinary  course of  business  (exclusive  of
obligations for the payment of borrowed  money);  (v) easements,  rights-of-way,
municipal and zoning ordinances and similar charges, encumbrances, title defects
or other  irregularities  that do not  materially  interfere  with the  ordinary
course of  business  of GST or any of its  Restricted  Subsidiaries;  (vi) Liens
(including  extensions  and  renewals  thereof)  upon real or personal  property
acquired  after the Closing Date;  provided that (a) such Lien is created solely
for the  purpose of  securing  Indebtedness  Incurred,  in  accordance  with the
"Limitation on Indebtedness"  covenant  described below, (1) to finance the cost
(including,  without limitation, the cost of design, development,  construction,
acquisition,  installation  or  integration)  of the item of  property or assets
subject  thereto and such Lien is created prior to, at the time of or within six
months after the later of the acquisition, the completion of construction or the
commencement  of  full  operation  of  such  property  or (2) to  refinance  any
Indebtedness previously so secured, (b) the principal amount of the Indebtedness
secured  by such  Lien does not  exceed  100% of such cost and (c) any such Lien
shall not  extend to or cover any  property  or assets  other  than such item of
property or assets and any  improvements on such item; (vii) leases or subleases
granted to others that do not materially  interfere with the ordinary  course of
business of GST and its Restricted Subsidiaries,  taken as a whole; (viii) Liens
encumbering  property or assets  under  construction  arising  from  progress or
partial payments by a customer of GST or its Restricted Subsidiaries relating to
such property or assets;  (ix) any interest or title of a lessor in the property
subject to any  Capitalized  Lease or operating  lease;  (x) Liens  arising from
filing Uniform Commercial Code financing statements regarding leases; (xi) Liens
on  property  of, or on  shares of stock or  Indebtedness  of,  any  corporation
existing  at the time  such  corporation  becomes,  or  becomes  a part of,  any
Restricted  Subsidiary;  provided  that such Liens do not extend to or cover any
property or assets of GST or any Restricted  Subsidiary  other than the property
or assets  acquired;  (xii) Liens in favor of GST or any Restricted  Subsidiary;
(xiii) Liens arising from the rendering of a final judgment or order against GST
or any  Restricted  Subsidiary  that does not give rise to an Event of  Default;
(xiv) Liens securing reimbursement obligations with respect to letters of credit
that encumber  documents and other  property  relating to such letters of credit
and the  products  and  proceeds  thereof;  (xv) Liens in favor of  customs  and
revenue  authorities  arising  as a matter of law to secure  payment  of customs
duties in connection  with the  importation  of goods;  (xvi) Liens  encumbering
customary initial deposits and margin deposits,  and other Liens that are either
within the general

                                      -85-

<PAGE>
parameters  customary in the  industry  and  incurred in the ordinary  course of
business, in each case, securing Indebtedness under Interest Rate Agreements and
Currency Agreements and forward contracts,  options,  future contracts,  futures
options or similar agreements or arrangements  designed to protect GST or any of
its Restricted  Subsidiaries from fluctuations in interest rates or the price of
commodities;  (xvii) Liens arising out of  conditional  sale,  title  retention,
consignment or similar arrangements for the sale of goods entered into by GST or
any of its  Restricted  Subsidiaries  in the  ordinary  course  of  business  in
accordance with the past practices of GST and its Restricted  Subsidiaries prior
to the Closing Date; and (xviii) Liens on or sales of receivables.

         "Pledge  Account"  means  the  accounts  established  with the  Trustee
pursuant  to the terms of the Pledge  Agreement  for the  deposit of the Pledged
Securities  purchased by GST Network with the net proceeds  from the sale of the
Notes.

         "Pledge Agreement" means the Collateral Pledge and Security  Agreement,
dated as of the Closing  Date,  made by GST Network in favor of the Trustee,  as
such agreement may be amended, restated, supplemented or otherwise modified from
time to time.

         "Pledged  Securities"  means the securities which shall consist of U.S.
Government Securities,  purchased by GST Network with the proceeds from the sale
of the Notes or the  proceeds  from such  securities,  to be held in the  Pledge
Account, all in accordance with the terms of the Pledge Agreement.

         "Redeemable Preferred Shares" means the Series A Convertible Preference
Shares of GST outstanding on the Closing Date.

         "Redeemable  Stock"  means any class or series of Capital  Stock of any
Person that by its term or otherwise is (i) required to be redeemed prior to the
Stated  Maturity of the Notes,  (ii)  redeemable  at the option of the holder of
such class or series of Capital  Stock at any time prior to the Stated  Maturity
of the  Notes  or (iii)  convertible  into or  exchangeable  for  Capital  Stock
referred  to in clause  (i) or (ii)  above or  Indebtedness  having a  scheduled
maturity  prior to the Stated  Maturity of the Notes;  provided that any Capital
Stock that would not  constitute  Redeemable  Stock but for  provisions  thereof
giving holders  thereof the right to require such Person to repurchase or redeem
such Capital Stock upon the occurrence of an "asset sale" or "change of control"
occurring  prior to the  Stated  Maturity  of the  Notes  shall  not  constitute
Redeemable  Stock  if  the  "asset  sale"  or  "change  of  control"  provisions
applicable  to such Capital  Stock are no more  favorable to the holders of such
Capital Stock than the  provisions  contained in "Limitation on Asset Sales" and
"Repurchase  of Notes upon a Change of Control"  covenants  described  below and
such Capital Stock specifically provides that such Person will not repurchase or
redeem  any  such  stock  pursuant  to  such  provision  prior  to the  Issuer's
repurchase  of such Notes as are  required  to be  repurchased  pursuant  to the
"Limitation  on Asset Sales" and  "Repurchase of Notes upon a Change of Control"
covenants described below.

         "Restricted  Subsidiary"  means any  Subsidiary  of GST  other  than an
Unrestricted Subsidiary.

         "Secured  Notes" means the 13 1/4% Senior  Secured  Discount  notes due
2007 of GST Funding issued pursuant to the Secured Notes Indenture.

         "Secured Notes  Indenture" means the Indenture dated as of May 13, 1997
among GST, GST USA, GST Funding and United States Trust Company of New York.

         "Senior Notes" means the 13 7/8% Senior  Discount Notes due 2005 of GST
USA issued pursuant to the Senior Notes Indenture.

         "Senior  Notes  Indenture"  means  the  senior  notes  indenture  dated
December 19, 1995 among GST USA, as issuer, GST, as guarantor, and United States
Trust Company of New York.


                                      -86-

<PAGE>
         "Significant  Subsidiary"  means,  at any  date of  determination,  any
Restricted  Subsidiary that,  together with its  Subsidiaries,  (i) for the most
recent  fiscal  year of GST,  accounted  for more  than 10% of the  consolidated
revenues of GST and its  Restricted  Subsidiaries  or (ii) as of the end of such
fiscal year,  was the owner of more than 10% of the  consolidated  assets of GST
and its Restricted Subsidiaries, all as set forth on the most recently available
consolidated financial statements of GST for such fiscal year.

         "Specified  Date" means any  Redemption  Date,  any Payment Date for an
Offer to Purchase  or any date on which the Notes  first  become due and payable
after an Event of Default.

         "Stated  Maturity"  means,  (i) with respect to any debt security,  the
date  specified  in such  debt  security  as the  fixed  date on which the final
installment  of principal of such debt security is due and payable and (ii) with
respect to any  scheduled  installment  of  principal of or interest on any debt
security,  the date  specified in such debt  security as the fixed date on which
such installment is due and payable.

         "Subsidiary"  means,  with  respect  to any  Person,  any  corporation,
association or other business  entity of which more than 50% of the voting power
of the outstanding Voting Stock is owned, directly or indirectly, by such Person
and one or more other Subsidiaries of such Person.

         "Temporary  Cash  Investment"  means any of the  following:  (i) direct
obligations of the United States of America or any agency thereof or obligations
fully and  unconditionally  guaranteed  by the  United  States of America or any
agency thereof,  (ii) time deposit  accounts,  certificates of deposit and money
market  deposits  maturing  within 180 days of the date of  acquisition  thereof
issued  by a bank or trust  company  which is  organized  under  the laws of the
United States of America, any state thereof or any foreign country recognized by
the United  States,  and which bank or trust  company has  capital,  surplus and
undivided profits  aggregating in excess of $50 million (or the foreign currency
equivalent thereof) and has outstanding debt which is rated "A" (or such similar
equivalent rating) or higher by at least one nationally  recognized  statistical
rating  organization  (as defined in Rule 436 under the  Securities  Act) or any
money-market  fund  sponsored  by a  registered  broker-dealer  or  mutual  fund
distributor,  (iii) repurchase  obligations with a term of not more than 30 days
for  underlying  securities  of the types  described in clause (i) above entered
into with a bank meeting the qualifications described in clause (ii) above, (iv)
commercial paper,  maturing not more than 90 days after the date of acquisition,
issued by a corporation (other than an Affiliate of the Issuer) organized and in
existence  under the laws of the United States of America,  any state thereof or
any foreign country  recognized by the United States of America with a rating at
the  time as of which  any  investment  therein  is made of  "P-1"  (or  higher)
according to Moody's Investors  Service,  Inc. or "A-1" (or higher) according to
Standard & Poor's Ratings  Services,  and (v) securities  with maturities of six
months or less from the date of acquisition issued or fully and  unconditionally
guaranteed  by any state,  commonwealth  or  territory  of the United  States of
America, or by any political  subdivision or taxing authority thereof, and rated
at least "A" by Standard & Poor's Ratings Services or Moody's Investors Service,
Inc.

         "Tomen" means Tomen Corporation or its Affiliates.

         "Tomen  Facility"  means,  collectively,  the  Tomen  Master  Agreement
together with all other agreements  (including credit  agreements),  instruments
and documents executed or delivered pursuant thereto or in connection therewith,
in each  case as such  agreements,  instruments  or  documents  may be  amended,
supplemented,  extended,  renewed,  replaced or otherwise  modified from time to
time.

         "Transaction  Date"  means,  with  respect  to  the  Incurrence  of any
Indebtedness  by  GST  or any of its  Restricted  Subsidiaries,  the  date  such
Indebtedness is to be Incurred and, with respect to any Restricted Payment,  the
date such Restricted Payment is to be made.

         "Unrestricted  Subsidiary"  means (i) any Subsidiary of GST that at the
time of  determination  shall be  designated an  Unrestricted  Subsidiary by the
Board of Directors in the manner  provided  below and (ii) any  Subsidiary of an
Unrestricted  Subsidiary.  The Board of Directors may  designate any  Restricted
Subsidiary

                                      -87-

<PAGE>
(including any newly acquired or newly formed Subsidiary), other than GST USA or
a Subsidiary Guarantor,  to be an Unrestricted Subsidiary unless such Subsidiary
owns any Capital  Stock of, or owns or holds any Lien on any property of, GST or
any  Restricted  Subsidiary;  provided  that  (A)  any  Guarantee  by GST or any
Restricted  Subsidiary of any Indebtedness of the Subsidiary being so designated
shall be deemed an Incurrence of such  Indebtedness  and an Investment by GST or
such Restricted  Subsidiary at the time of such designation;  (B) either (I) the
Subsidiary  to be so  designated  has total  assets of $1,000 or less or (II) if
such Subsidiary has assets greater than $1,000,  that such designation  would be
permitted under the "Limitation on Restricted Payments" covenant described below
and (C) if  applicable,  the  Incurrence  of  Indebtedness  and  the  Investment
referred  to in clause (A) above would be  permitted  under the  "Limitation  on
Indebtedness" and "Limitation on Restricted Payments" covenants described below.
The  Board of  Directors  may  designate  any  Unrestricted  Subsidiary  to be a
Restricted  Subsidiary of GST;  provided that immediately after giving effect to
such designation (x) the Liens and Indebtedness of such Unrestricted  Subsidiary
outstanding  immediately  after such designation is permitted to be Incurred for
all purposes of the  Indenture and (y) no Default or Event of Default shall have
occurred and be continuing. Any such designation by the Board of Directors shall
be  evidenced  to the Trustee by promptly  filing with the Trustee a copy of the
Board Resolution giving effect to such designation and an Officers'  Certificate
certifying that such designation complied with the foregoing provisions.

         "Voting  Stock" means with respect to any Person,  Capital Stock of any
class or kind ordinarily having the power to vote for the election of directors,
managers or other voting members of the governing body of such Person.

         "Wholly  Owned"  means,  with respect to any  Subsidiary of any Person,
such  Subsidiary  if all of the  outstanding  Capital  Stock in such  Subsidiary
(other than any director's qualifying shares or Investments by foreign nationals
mandated by applicable  law) is owned by such Person or one or more Wholly Owned
Subsidiaries of such Person.

COVENANTS

  LIMITATION ON INDEBTEDNESS

         (a)  GST  will  not,  and  will  not  permit  any  of  its   Restricted
Subsidiaries to, Incur any  Indebtedness  (other than the Notes and Indebtedness
existing  on the  Closing  Date);  provided  that  GST and  GST  USA  may  Incur
Indebtedness if, after giving effect to the Incurrence of such  Indebtedness and
the receipt and  application  of the proceeds  therefrom,  the  Indebtedness  to
EBITDA  Ratio would be greater  than zero and less than 5:1. GST Network may not
Incur any Indebtedness other than the Notes.

         Notwithstanding  the  foregoing,  GST  and  any  Restricted  Subsidiary
(except  as  specified  below)  may  Incur  each and all of the  following:  (i)
Indebtedness   outstanding  at  any  time   (including,   but  not  limited  to,
Indebtedness  under the Tomen Facility) in an aggregate  principal amount not to
exceed  $320  million,  less any amount of  Indebtedness  permanently  repaid as
provided under the "Limitation on Asset Sales" covenant  described  below;  (ii)
Indebtedness  (A) to GST  evidenced  by a  promissory  note or (B) to any of its
Restricted Subsidiaries; provided that any subsequent event which results in any
such  Restricted  Subsidiary  ceasing  to  be a  Restricted  Subsidiary  or  any
subsequent  transfer  of  such  Indebtedness  (other  than  to  GST  or  another
Restricted  Subsidiary)  shall  be  deemed,  in  each  case,  to  constitute  an
Incurrence  of such  Indebtedness  not  permitted  by this  clause  (ii);  (iii)
Indebtedness  issued in exchange  for, or the net  proceeds of which are used to
refinance or refund,  then  outstanding  Indebtedness,  other than  Indebtedness
Incurred under clause (i), (ii),  (iv),  (v), (vii) or (viii) of this paragraph,
and any refinancings thereof in an amount not to exceed the amount so refinanced
or refunded (plus premiums, accrued interest, fees and expenses);  provided that
Indebtedness the proceeds of which are used to refinance or refund the Notes and
Note  Guarantee  or  Indebtedness  that is or  would  be  pari  passu  with,  or
subordinated  in right of payment to, the Notes and Note Guarantee shall only be
permitted  under this clause  (iii) if (A) in case the Notes and Note  Guarantee
are refinanced in part, or the Indebtedness to be refinanced is or would be pari
passu with the Notes or Note Guarantee,

                                      -88-

<PAGE>
such  new  Indebtedness,  by its  terms  or by the  terms  of any  agreement  or
instrument pursuant to which such new Indebtedness is outstanding,  is expressly
made pari passu with, or subordinate in right of payment to, the remaining Notes
or Note Guarantee, (B) in case the Indebtedness to be refinanced is subordinated
in right of payment to the Notes or Note Guarantee,  such new  Indebtedness,  by
its terms or by the terms of any agreement or instrument  pursuant to which such
new  Indebtedness  is  outstanding,  is expressly  made  subordinate in right of
payment  to the  Notes  or Note  Guarantee  at  least  to the  extent  that  the
Indebtedness  to be refinanced is or would be  subordinated to the Notes or Note
Guarantee and (C) such new Indebtedness, determined as of the date of Incurrence
of such new  Indebtedness,  does not mature prior to the Stated  Maturity of the
Indebtedness  to be  refinanced  or  refunded,  and the Average Life of such new
Indebtedness is at least equal to the remaining Average Life of the Indebtedness
to be  refinanced  or  refunded;  and  provided  further  that in no  event  may
Indebtedness of GST or GST USA be refinanced by means of any Indebtedness of any
Restricted   Subsidiary  of  GST  USA  pursuant  to  this  clause  (iii);   (iv)
Indebtedness  (A) in respect of performance,  surety or appeal bonds provided in
the ordinary course of business, (B) under Currency Agreements and Interest Rate
Agreements;  provided that such  agreements do not increase the  Indebtedness of
the obligor  outstanding at any time other than as a result of  fluctuations  in
foreign  currency  exchange  rates  or  interest  rates  or by  reason  of fees,
indemnities and compensation payable thereunder; and (C) arising from agreements
providing  for   indemnification,   adjustment  of  purchase  price  or  similar
obligations,   or  from  Guarantees  or  letters  of  credit,  surety  bonds  or
performance  bonds  securing  any  obligations  of GST or any of the  Restricted
Subsidiaries  pursuant to such  agreements,  in any case  Incurred in connection
with the  disposition of any business,  assets or Restricted  Subsidiary  (other
than  Guarantees  of  Indebtedness  Incurred by any Person  acquiring all or any
portion of such  business,  assets or Restricted  Subsidiary  for the purpose of
financing  such  acquisition),  in a  principal  amount  not to exceed the gross
proceeds  actually  received by GST or any  Restricted  Subsidiary in connection
with such  disposition;  (v) Indebtedness of GST not to exceed,  at any one time
outstanding,  two times the Net Cash Proceeds  received by GST after the Closing
Date from the  issuance  and sale of its Capital  Stock  (other than  Redeemable
Stock) to a Person  other than a  Subsidiary  of GST to the extent such Net Cash
Proceeds have not been used pursuant to clause (C)(2) of the first  paragraph or
clauses  (iii),  (iv) or (vi) of the  second  paragraph  of the  "Limitation  on
Restricted  Payments"  covenant  described  below to make a Restricted  Payment;
provided that such  Indebtedness does not mature prior to the Stated Maturity of
the Notes and has an  Average  Life  longer  than the Notes;  (vi)  Indebtedness
Incurred to finance the cost (including, without limitation, the cost of design,
development, construction,  acquisition, installation or integration) of network
assets (including, without limitation, equipment and real property and leasehold
improvements  that are necessary to install or operate network assets;  provided
that in no  event  shall  the  cost of any  such  real  property  and  leasehold
improvements financed hereby exceed 20% of the total cost of the related network
assets)  or  inventory  purchased  or  leased  by GST  or any of its  Restricted
Subsidiaries  after the Closing Date; (vii) Indebtedness of GST or GST USA under
one or more  revolving  credit or working  capital  facilities  in an  aggregate
principal  amount  outstanding  at any time not to exceed  the lesser of (A) $50
million and (B) 75% of the consolidated book value of the accounts receivable of
GST and its Restricted  Subsidiaries;  and (viii) Indebtedness of GST or GST USA
to the extent the  proceeds  thereof are  promptly  (a) used to  purchase  Notes
tendered in an Offer to Purchase  made as a result of a Change of Control or (b)
deposited to defease the Notes as described below under "Defeasance."

         (b) For purposes of determining  any particular  amount of Indebtedness
under this "Limitation on  Indebtedness"  covenant,  (1)  Indebtedness  Incurred
under the Tomen  Facility  on or prior to the  Closing  Date shall be treated as
Incurred  pursuant to clause (i) of the second  paragraph of this "Limitation on
Indebtedness" covenant and (2) Guarantees,  Liens or obligations with respect to
letters  of  credit   supporting   Indebtedness   otherwise   included   in  the
determination of such particular  amount shall not be included.  For purposes of
determining  compliance with this "Limitation on Indebtedness"  covenant, in the
event that an item of  Indebtedness  meets the  criteria of more than one of the
types  of  Indebtedness  described  in the  above  clauses,  GST,  in  its  sole
discretion,  shall  classify such item of  Indebtedness  and only be required to
include the amount and type of such Indebtedness in one of such clauses.

  LIMITATION ON RESTRICTED PAYMENTS

         GST will  not,  and will  not  permit  any  Restricted  Subsidiary  to,
directly or indirectly, (i) declare or pay any dividend or make any distribution
on its Capital Stock (other than dividends or distributions payable solely in

                                      -89-

<PAGE>

shares  of its  or  such  Restricted  Subsidiary's  Capital  Stock  (other  than
Redeemable Stock) or in options, warrants or other rights to acquire such shares
of  Capital  Stock)  held by  Persons  other  than GST or any of its  Restricted
Subsidiaries (and other than pro rata dividends or distributions on Common Stock
of Restricted Subsidiaries),  (ii) purchase, redeem, retire or otherwise acquire
for value any shares of Capital  Stock of GST  (including  options,  warrants or
other rights to acquire such shares of Capital Stock) held by Persons other than
any Wholly Owned  Restricted  Subsidiaries  of GST,  (iii) make any voluntary or
optional principal  payment,  or voluntary or optional  redemption,  repurchase,
defeasance, or other acquisition or retirement for value, of Indebtedness of GST
USA or GST that is  subordinated  in right of  payment  to the Notes or the Note
Guarantee,  as the  case  may be,  or (iv)  make any  Investment,  other  than a
Permitted  Investment,  in  any  Person  (such  payments  or any  other  actions
described in clauses (i) through (iv) being collectively  "Restricted Payments")
if, at the time of, and after giving effect to, the proposed Restricted Payment:
(A) a Default or Event of Default shall have occurred and be continuing, (B) GST
could not Incur at least $1.00 of Indebtedness  under the first paragraph of the
"Limitation  on  Indebtedness"  covenant  or (C)  the  aggregate  amount  of all
Restricted Payments (the amount, if other than in cash, to be determined in good
faith by the Board of Directors,  whose  determination  shall be conclusive  and
evidenced  by a Board  Resolution)  made after the Closing Date shall exceed the
sum of (1) 50% of the aggregate  amount of the Adjusted  Consolidated Net Income
(or,  if the  Adjusted  Consolidated  Net  Income is a loss,  minus 100% of such
amount)  (determined by excluding  income  resulting from transfers of assets by
GST or a  Restricted  Subsidiary  to an  Unrestricted  Subsidiary)  accrued on a
cumulative basis during the period (taken as one accounting period) beginning on
the first day of the fiscal quarter  immediately  following the Closing Date and
ending on the last day of the last fiscal quarter preceding the Transaction Date
for which  reports  have been filed  pursuant  to the  "Commission  Reports  and
Reports to Holders"  covenant plus (2) the aggregate Net Cash Proceeds  received
by GST after  the  Closing  Date from the  issuance  and sale  permitted  by the
Indenture of its Capital Stock (other than Redeemable  Stock) to a Person who is
not a  Subsidiary  of  GST,  or  from  the  issuance  to a  Person  who is not a
Subsidiary  of GST of any options,  warrants or other rights to acquire  Capital
Stock of GST (in each case,  exclusive of any  Redeemable  Stock or any options,
warrants or other rights that are redeemable at the option of the holder, or are
required to be  redeemed,  prior to the Stated  Maturity of the Notes),  in each
case except to the extent such Net Cash Proceeds are used to Incur  Indebtedness
pursuant  to  clause  (v)  of  the  second   paragraph  of  the  "Limitation  on
Indebtedness"  covenant,  plus  (3) an  amount  equal  to the net  reduction  in
Investments  (other than  reductions in Permitted  Investments and reductions in
Investments  made  pursuant  to  clause  (vi) of the  second  paragraph  of this
"Limitation  on  Restricted  Payments"  covenant) in any Person  resulting  from
payments  of  interest  on  Indebtedness,  dividends,  repayments  of  loans  or
advances,  or other  transfers of assets,  in each case to GST or any Restricted
Subsidiary (except to the extent any such payment is included in the calculation
of Adjusted  Consolidated Net Income),  or from  redesignations  of Unrestricted
Subsidiaries as Restricted  Subsidiaries (valued in each case as provided in the
definition of "Investments"), not to exceed the amount of Investments previously
made by GST and its Restricted Subsidiaries in such Person.

         The  foregoing  provision  shall not be  violated by reason of: (i) the
payment of any dividend within 60 days after the date of declaration thereof if,
at said date of  declaration,  such  payment  would  comply  with the  foregoing
paragraph; (ii) the redemption,  repurchase,  defeasance or other acquisition or
retirement for value of Indebtedness that is subordinated in right of payment to
the  Intercompany  Notes or, after GST USA assumes the Notes,  the Notes or Note
Guarantee,  including premium, if any, and accrued and unpaid interest, with the
proceeds of, or in exchange for, Indebtedness Incurred under clause (iii) of the
second  paragraph  of the  "Limitation  on  Indebtedness"  covenant;  (iii)  the
repurchase,  redemption or other acquisition of Capital Stock of GST in exchange
for, or out of the proceeds of a substantially concurrent offering of, shares of
Capital  Stock (other than  Redeemable  Stock) of GST; (iv) the  acquisition  of
Indebtedness  of GST USA or GST which is subordinated in right of payment to the
Intercompany  Notes  or,  after GST USA  assumes  the  Notes,  the Notes or Note
Guarantee,  in  exchange  for,  or out  of  the  proceeds  of,  a  substantially
concurrent  offering  of,  shares  of  the  Capital  Stock  of GST  (other  than
Redeemable Stock); (v) payments or distributions,  in the nature of satisfaction
of dissenters' rights, pursuant to or in connection with a consolidation, merger
or  transfer  of assets  that  complies  with the  provisions  of the  Indenture
applicable to mergers,  consolidations and transfers of all or substantially all
of the property and assets of GST USA or GST; (vi)  Investments in any Person or
Persons (other than an Affiliate (other than a Subsidiary) of the Company),  the
primary business of which is related, ancillary or complementary to the business
of GST and its

                                      -90-

<PAGE>
Restricted Subsidiaries on the date of such Investments,  in an aggregate amount
not to exceed $50 million plus,  (a) in any fiscal year, an amount not to exceed
10% of GST's  Consolidated  EBITDA (if positive) for the  immediately  preceding
fiscal year,  (b) an amount not to exceed the Net Cash Proceeds  received by GST
after May 13, 1997 from the issuance and sale  permitted by the Indenture of its
Capital Stock (other than Redeemable Stock) to a Person that is not a Subsidiary
of GST,  except  to the  extent  such  Net  Cash  Proceeds  are  used  to  Incur
Indebtedness  pursuant  to clause  (v) under the  "Limitation  on  Indebtedness"
covenant or to make Restricted  Payments  pursuant to clause (C)(2) of the first
paragraph  or clause  (iii) or (iv) of this  paragraph  of this  "Limitation  on
Restricted  Payments"  covenant and (c) the net reduction in  Investments in any
Person made pursuant to this clause (vi), except to the extent such reduction is
included in the calculation of Adjusted  Consolidated Net Income;  provided that
the net  reduction  in any such  Investment  shall  not  exceed  the  amount  of
Investments  previously  made  in such  Person;  (vii)  Investments  by GST or a
Restricted  Subsidiary made pursuant to the second  paragraph of the "Limitation
on Investments"  covenant, in an aggregate amount not to exceed $25 million; and
(viii) cash  payments in lieu of the issuance of  fractional  Common Shares upon
conversion  (including  mandatory  conversion) of the Convertible Notes provided
for in the  Convertible  Notes  Indenture or the  Redeemable  Preferred  Shares;
provided that,  except in the case of clauses (i) and (iii), no Default or Event
of Default shall have  occurred and be  continuing or occur as a consequence  of
the actions or payments set forth herein.

         Each Restricted Payment permitted  pursuant to the preceding  paragraph
(other than the  Restricted  Payment  referred to in clause (ii)  thereof and an
exchange  of Capital  Stock for  Capital  Stock or  Indebtedness  referred to in
clause (iii) or (iv)  thereof),  and the Net Cash  Proceeds from any issuance of
Capital Stock referred to in clauses  (iii),  (iv) and (vi) shall be included in
calculating  whether the conditions of clause (C) of the first paragraph of this
"Limitation on Restricted  Payments"  covenant have been met with respect to any
subsequent  Restricted  Payments.  In the event the  proceeds  of an issuance of
Capital  Stock  of  GST  are  used  for  the  redemption,  repurchase  or  other
acquisition  of the Notes or  Indebtedness  that is pari passu with the Notes or
Note Guarantee, then the Net Cash Proceeds of such issuance shall be included in
clause (C) of the first  paragraph of this  "Limitation on Restricted  Payments"
covenant  only to the extent  such  proceeds  are not used for such  redemption,
repurchase or other acquisition of Indebtedness.

         GST Network will not, and will not permit any Subsidiary  to,  directly
or  indirectly,  make any Restricted  Payment other than  Investments in Pledged
Securities,  cash, the Fee Notes and Intercompany Notes, in each case pledged to
secure the Notes.

  LIMITATION ON DIVIDEND AND OTHER  PAYMENT  RESTRICTIONS  AFFECTING  RESTRICTED
  SUBSIDIARIES

         GST will not, and will not permit any Restricted  Subsidiary to, create
or  otherwise  cause or  suffer  to exist or  become  effective  any  consensual
encumbrance  or  restriction  of any  kind  on  the  ability  of any  Restricted
Subsidiary  to (i) pay  dividends or make any other  distributions  permitted by
applicable law on any Capital Stock of such Restricted  Subsidiary  owned by GST
or any other Restricted Subsidiary, (ii) pay any Indebtedness owed to GST or any
other  Restricted  Subsidiary,  (iii) make loans or advances to GST or any other
Restricted  Subsidiary  or (iv) transfer any of its property or assets to GST or
any other Restricted Subsidiary.

         The  foregoing  provisions  shall  not  restrict  any  encumbrances  or
restrictions:  (i)  existing on the Closing  Date in the  Indenture or any other
agreement  in effect on the  Closing  Date,  and any  extensions,  refinancings,
renewals or replacements of such agreements;  provided that the encumbrances and
restrictions in any such extensions,  refinancings, renewals or replacements are
no less favorable in any material respect to the Holders than those encumbrances
or restrictions that are then in effect and that are being extended, refinanced,
renewed or replaced;  (ii) existing under or by reason of applicable  law; (iii)
existing  with  respect to any Person or the  property  or assets of such Person
acquired  by GST or any  Restricted  Subsidiary,  existing  at the  time of such
acquisition and not incurred in  contemplation  thereof,  which  encumbrances or
restrictions  are not  applicable to any Person or the property or assets of any
Person  other  than such  Person  or the  property  or assets of such  Person so
acquired;  (iv)  in the  case of  clause  (iv) of the  first  paragraph  of this
"Limitation  on Dividend and Other  Payment  Restrictions  Affecting  Restricted
Subsidiaries"  covenant, (A) that restrict in a customary manner the subletting,
assignment or

                                      -91-

<PAGE>
transfer  of any  property  or asset  that is a lease,  license,  conveyance  or
contract or similar  property or asset,  (B)  existing by virtue of any transfer
of,  agreement  to  transfer,  option or right with  respect to, or Lien on, any
property or assets of GST or any Restricted  Subsidiary not otherwise prohibited
by the Indenture or (C) arising or agreed to in the ordinary course of business,
not  relating  to any  Indebtedness,  and  that do not,  individually  or in the
aggregate, detract from the value of property or assets of GST or any Restricted
Subsidiary in any manner material to GST or any Restricted Subsidiary;  (v) with
respect to a Restricted Subsidiary and imposed pursuant to an agreement that has
been entered into for the sale or disposition of all or substantially all of the
Capital Stock of, or property and assets of, such  Restricted  Subsidiary;  (vi)
with respect to any Development  Company,  imposed  pursuant to or in connection
with any Indebtedness  Incurred by such Development  Company to finance at least
50% of the total financing  required for the development and construction of all
of such Development  Company's  alternative  access networks or any Indebtedness
Incurred to  refinance  or replace  such  Indebtedness;  provided  that (a) such
Indebtedness  (including  such  refinancing  Indebtedness)  is  permitted  to be
Incurred under the "Limitation on  Indebtedness"  covenant  described above, (b)
such  encumbrances  and  restrictions  are no more  restrictive  in any material
respect  than  those  encumbrances  and  restrictions  existing  under the Tomen
Facility  as in  effect  on the  Closing  Date  and (c)  such  encumbrances  and
restrictions  shall only apply to such  Development  Company for so long as such
Indebtedness (or such refinancing  Indebtedness)  remains outstanding;  or (vii)
with respect to any Development  Company (a "Restricted  Development  Company"),
imposed pursuant to or in connection with any  Indebtedness  Incurred by another
Development  Company to finance at least 50% of the total financing required for
the development  and  construction  of all of such other  Development  Company's
alternative access networks or any Indebtedness Incurred to refinance or replace
such  Indebtedness;  provided that (a) such encumbrances and restrictions  shall
not apply to such Restricted  Development  Company prior to the occurrence of an
event of default under such Indebtedness (or refinancing Indebtedness), (b) such
Indebtedness  (including  such  refinancing  Indebtedness)  is  permitted  to be
Incurred under the "Limitation on Indebtedness"  covenant, (c) such encumbrances
and  restrictions  are no more  restrictive  in any material  respect than those
contemplated  by the Tomen  Facility as in effect on the Closing Date and (d) at
least 50% of the total financing  required for the development and  construction
of all of such Restricted  Development Company's alternative access networks was
provided by the holder of the Indebtedness of such other Development Company.

         GST Network will not, and will not permit any  Subsidiary to, create or
otherwise  cause or  suffer  to exist or  become  effective  any of the  matters
referred to in the first paragraph of this section.

         Nothing  contained in this  "Limitation  on Dividend and Other  Payment
Restrictions  Affecting Restricted  Subsidiaries"  covenant shall prevent GST or
any Restricted Subsidiary from (1) creating, incurring, assuming or suffering to
exist any Liens otherwise permitted in the "Limitation on Liens" covenant or (2)
restricting the sale or other disposition of property or assets of GST or any of
its  Restricted  Subsidiaries  that  secure  Indebtedness  of  GST or any of its
Restricted Subsidiaries.

  LIMITATION   ON  THE  ISSUANCE  AND  SALE  OF  CAPITAL   STOCK  OF  RESTRICTED
  SUBSIDIARIES

         GST will not  sell,  and will not  permit  any  Restricted  Subsidiary,
directly  or  indirectly,  to issue or sell any  shares  of  Capital  Stock of a
Restricted Subsidiary  (including options,  warrants or other rights to purchase
shares of such Capital  Stock)  except (i) to GST or a Wholly  Owned  Restricted
Subsidiary;  (ii)  issuances or sales to foreign  nationals of shares of Capital
Stock of foreign Restricted  Subsidiaries,  to the extent required by applicable
law; (iii) if,  immediately  after giving effect to such issuance or sale,  such
Restricted  Subsidiary would no longer  constitute a Restricted  Subsidiary;  or
(iv) a sale of Common Stock of Phoenix Fiber, and in connection and concurrently
with such sale, a sale of Common Stock of GST Tucson  Lightwave,  Inc.  provided
that the  proceeds  of any such sale under  this  clause (v) shall be applied in
accordance  with clause (A) or (B) of the first  paragraph of the "Limitation on
Asset Sales" covenant described below.

         GST Network will not sell, and will not permit any Subsidiary, directly
or  indirectly,  to issue or sell any  shares of Capital  Stock of a  Subsidiary
(including options,  warrants or other rights to purchase shares of such Capital
Stock).

                                      -92-

<PAGE>
  LIMITATION ON ISSUANCES OF GUARANTEES BY RESTRICTED SUBSIDIARIES

         Under the terms of the  Indenture,  GST will not permit any  Restricted
Subsidiary,  directly or indirectly, to Guarantee any Indebtedness of GST or any
Indebtedness of GST USA ("Guaranteed Indebtedness"),  unless (i) such Restricted
Subsidiary  simultaneously executes and delivers a supplemental indenture to the
Indenture providing for a Guarantee (a "Subsidiary Guarantee") of payment of the
Notes by such Restricted  Subsidiary and (ii) such Restricted  Subsidiary waives
and will not in any manner whatsoever claim or take the benefit or advantage of,
any  rights of  reimbursement,  indemnity  or  subrogation  or any other  rights
against  GST  Network,  GST or GST  USA as a  result  of  any  payment  by  such
Restricted  Subsidiary  under  its  Subsidiary  Guarantee;  provided  that  this
paragraph shall not be applicable to any Guarantee of any Restricted  Subsidiary
that (x) existed at the time such Person became a Restricted  Subsidiary and (y)
was not  Incurred  in  connection  with,  or in  contemplation  of,  such Person
becoming a Restricted  Subsidiary.  If the Guaranteed  Indebtedness  is (A) pari
passu with the  Intercompany  Notes,  the Notes or the Note Guarantee,  then the
Guarantee  of  such  Guaranteed  Indebtedness  shall  be  pari  passu  with,  or
subordinated   to,  the  Subsidiary   Guarantee  or  (B)   subordinated  to  the
Intercompany Notes, the Notes or the Note Guarantee,  then the Guarantee of such
Guaranteed  Indebtedness  shall be subordinated  to the Subsidiary  Guarantee at
least to the extent that the  Guaranteed  Indebtedness  is  subordinated  to the
Intercompany Notes, the Notes or Note Guarantee, as the case may be.

         Notwithstanding the foregoing, any Subsidiary Guarantee by a Restricted
Subsidiary  may  provide  by its  terms  that  it  shall  be  automatically  and
unconditionally released and discharged upon (i) any sale, exchange or transfer,
to any  Person  not an  Affiliate  of GST of all of GST's  and  each  Restricted
Subsidiary's  Capital Stock in, or all or substantially  all the assets of, such
Restricted Subsidiary (which sale, exchange or transfer is not prohibited by the
Indenture) or (ii) the release or discharge of the Guarantee  which  resulted in
the creation of such Subsidiary  Guarantee,  except a discharge or release by or
as a result of payment under such Guarantee.

         Under the terms of the  Indenture,  GST  Network  will not  permit  any
Subsidiary to, directly or indirectly, Guarantee any Indebtedness.

  LIMITATION ON TRANSACTIONS WITH SHAREHOLDERS AND AFFILIATES

         GST will  not,  and will  not  permit  any  Restricted  Subsidiary  to,
directly or indirectly,  enter into, renew or extend any transaction (including,
without limitation, the purchase, sale, lease or exchange of property or assets,
or the  rendering  of any  service)  with any holder (or any  Affiliate  of such
holder)  of 5% or more of any class of  Capital  Stock of GST or any  Restricted
Subsidiary or with any  Affiliate of GST or any  Restricted  Subsidiary,  except
upon  fair and  reasonable  terms no less  favorable  to GST or such  Restricted
Subsidiary than could be obtained,  at the time of such  transaction or, if such
transaction is pursuant to a written agreement,  at the time of the execution of
the agreement providing therefor, in a comparable arm's-length  transaction with
a Person that is not such a holder or an Affiliate.

         The  foregoing  limitation  does not limit,  and shall not apply to (i)
transactions  (A)  approved  by a majority of the  disinterested  members of the
Board of Directors or (B) for which GST or a Restricted  Subsidiary  delivers to
the Trustee a written opinion of a nationally recognized investment banking firm
stating that the transaction is fair to GST or such Restricted Subsidiary from a
financial point of view; (ii) any transaction  solely between GST and any of its
Wholly Owned  Restricted  Subsidiaries or solely between Wholly Owned Restricted
Subsidiaries;  (iii) the  payment  of  reasonable  and  customary  regular  fees
(including  through the  issuance  of shares of Common  Stock of GST or options,
warrants or other rights to acquire such shares) to directors of GST who are not
employees  of GST  or  any of its  subsidiaries;  (iv)  any  payments  or  other
transactions  pursuant to any  tax-sharing  agreement  between GST and any other
Person with which GST files a consolidated  tax return or with which GST is part
of a consolidated  group for tax purposes;  or (v) any  Restricted  Payments not
prohibited by the "Limitation on Restricted Payments" covenant.  Notwithstanding
the foregoing,  any transaction or series of  transactions  covered by the first
paragraph of this "Limitation on Transactions  with Shareholders and Affiliates"
covenant and not

                                      -93-

<PAGE>
covered by clauses (ii) through (vi) of this paragraph,  the aggregate amount of
which  exceeds  $500,000 in value,  must be approved or determined to be fair in
the manner provided for in clause (i)(A) or (B) above.

         GST Network will not, and will not permit any Subsidiary  to,  directly
or indirectly,  enter into, renew or extend any of the transactions described in
the first  paragraph  of this  section  other than any  transaction  between GST
Network and GST or any of its Restricted  Subsidiaries  required or permitted by
the Indenture and Pledge Agreement.

  LIMITATION ON LIENS

         GST will not, and will not permit any Restricted Subsidiary to, create,
incur,  assume or suffer to exist any Lien on any of its assets or properties of
any character,  or any shares of Capital Stock or Indebtedness of any Restricted
Subsidiary  (collectively,   "Protected  Property"),  without  making  effective
provision  for all of the Notes (or in the case of a Lien on Protected  Property
of GST, the Note  Guarantee) and all other amounts due under the Indenture to be
directly secured equally and ratably with (or, if the obligation or liability to
be secured by such Lien is  subordinated in right of payment to the Notes or the
Note  Guarantee,  prior to) the  obligation  or liability  secured by such Lien;
provided  that neither GST nor any  Restricted  Subsidiary  will create,  Incur,
assume or suffer to exist any Lien on the Pledged Securities, the Pledge Account
or any Acquired Equipment,  except Liens securing the Notes and the Intercompany
Notes.

         The foregoing  limitation  does not apply to (i) Liens  existing on the
Closing Date; (ii) Liens granted after the Closing Date on any assets or Capital
Stock of GST or its  Restricted  Subsidiaries  securing  the Initial  Note,  the
Intercompany  Notes or  created  in favor of GST  Network,  the  Trustee  or the
Holders of the Notes;  (iii)  Liens with  respect to the assets of a  Restricted
Subsidiary  granted  by such  Restricted  Subsidiary  to GST or a  Wholly  Owned
Restricted  Subsidiary  to  secure  Indebtedness  owing  to  GST or  such  other
Restricted  Subsidiary;  (iv) Liens securing  Indebtedness  which is Incurred to
refinance  secured  Indebtedness  which is permitted to be Incurred under clause
(iii) of the second  paragraph of the  "Limitation  on  Indebtedness"  covenant;
provided that such Liens do not extend to or cover any property or assets of GST
or any  Restricted  Subsidiary  other than the  property or assets  securing the
Indebtedness being refinanced;  (v) Liens upon or Capital Leases with respect to
inventory,  property  or  equipment  acquired  or  held  by  GST  or  any of its
Restricted  Subsidiaries  to secure all or a part of the purchase price therefor
or GST's or such Restricted Subsidiary's  obligations under such lease; provided
that such Liens do not extend to or cover any  property  or assets of GST or any
Restricted Subsidiary other than the inventory,  property or equipment acquired;
(vi) Liens on assets or  property  of, or the  Capital  Stock of, a  Development
Company securing  Indebtedness Incurred under clause (i) of the second paragraph
of the  "Limitation  on  Indebtedness"  covenant  to finance at least 50% of the
total financing for the development and  construction of the alternative  access
networks owned by such Development Company; provided such Liens do not extend to
or  cover  any  other  property  or  assets  of GST  or  any  of its  Restricted
Subsidiaries;  (vii) Liens on any property or assets of a Restricted  Subsidiary
securing  Indebtedness  of such Restricted  Subsidiary  permitted to be Incurred
under the Indenture; or (viii) Permitted Liens.

         GST Network will not, and will not permit any  Subsidiary  to,  create,
incur,  assume or suffer to exist any Lien on any of its assets or properties of
any character other than Liens granted in favor of the Trustee or the Holders of
the Notes.

  LIMITATION ON SALE-LEASEBACK TRANSACTIONS

         GST will not, and will not permit any  Restricted  Subsidiary to, enter
into any  sale-leaseback  transaction  involving any of its assets or properties
whether now owned or hereafter acquired,  whereby GST or a Restricted Subsidiary
sells or transfers such assets or properties and then or thereafter  leases such
assets or properties or any part thereof or any other assets or properties which
GST or such  Restricted  Subsidiary,  as the  case  may be,  intends  to use for
substantially  the same purpose or purposes as the assets or properties  sold or
transferred.

                                      -94-

<PAGE>
         The  foregoing   restriction  does  not  apply  to  any  sale-leaseback
transaction if (i) the lease is for a period,  including  renewal rights, of not
in excess of three  years;  (ii) the lease  secures  or  relates  to  industrial
revenue or pollution control bonds;  (iii) the transaction is solely between GST
and any Wholly  Owned  Restricted  Subsidiary  or solely  between  Wholly  Owned
Restricted  Subsidiaries;  or (iv) GST or such Restricted Subsidiary,  within 12
months  after the sale or transfer  of any assets or  properties  is  completed,
applies  an amount  not less than the net  proceeds  received  from such sale in
accordance  with clause (A) or (B) of the first  paragraph of the "Limitation on
Asset Sales" covenant described below.

         GST Network will not, and will not permit any Subsidiary to, enter into
any sale-leaseback transaction.


  LIMITATION ON INVESTMENTS

         GST will not,  and will not permit any  Restricted  Subsidiary  to, (i)
make any Investment in any Person  (including an Unrestricted  Subsidiary)  that
during its most  recent  fiscal year  derived or in its  current  fiscal year is
expected  by the Board of  Directors  of GST to derive  more  than  $250,000  in
revenues  from, or in its most recent fiscal year spent or in its current fiscal
year is expected by the Board of  Directors  of GST to spend more than  $250,000
on,  operations  or activities  located  outside the  continental  United States
(other than in the State of Hawaii or between the continental  United States and
the State of  Hawaii)  (an  "International  Business")  or (ii)  acquire  or own
(directly or  indirectly),  other than through an Unrestricted  Subsidiary,  any
entity,  business or asset that is  primarily  located  outside the  continental
United  States  (other than in the State of Hawaii) or any right with respect to
any of the foregoing (an "International Asset").

         Notwithstanding  the  foregoing,  and  subject  to the  "Limitation  on
Restricted Payments" covenant,  GST and its Restricted  Subsidiaries may make an
Investment in an Unrestricted  Subsidiary which owns,  intends to acquire or has
rights with respect to an International Business or International Asset provided
that the aggregate  amount of such  Investments  does not exceed (i) $25 million
plus, (A) in any fiscal year, an amount not to exceed 10% of GST's  Consolidated
EBITDA (if positive) for the immediately preceding fiscal year and (B) an amount
not to exceed the Net Cash Proceeds  received by GST after May 13, 1997 from the
issuance and sale  permitted by the  Indenture of its Capital  Stock (other than
Redeemable  Stock) to a Person  who is not a  Subsidiary  of GST,  less (ii) the
amount of any Investments made pursuant to the first paragraph, or the amount of
any Restricted Payment made pursuant to clause (iii), (iv) or (vi) of the second
paragraph,  of the "Limitation on Restricted  Payments" covenant;  provided that
the  International  Business or International  Assets are related,  ancillary or
complementary to the primary business of GST and its Restricted  Subsidiaries on
the date of such Investment.

  LIMITATION ON ASSET SALES

         GST will  not,  and will  not  permit  any  Restricted  Subsidiary  to,
consummate any Asset Sale, unless (i) the consideration  received by GST or such
Restricted  Subsidiary  is at least equal to the fair market value of the assets
sold or disposed of and (ii) at least 85% of the consideration received consists
of cash or Temporary Cash Investments; provided, however, that clause (ii) shall
not apply to long-term assignments of capacity in a network. In the event and to
the  extent  that  the  Net  Cash  Proceeds  received  by GST or its  Restricted
Subsidiaries from one or more Asset Sales occurring on or after the Closing Date
in any period of 12 consecutive  months exceed 10% of Adjusted  Consolidated Net
Tangible Assets  (determined as of the date closest to the  commencement of such
12-month  period for which a  consolidated  balance  sheet of the Issuer and its
Subsidiaries  has been  prepared),  then GST shall or shall  cause the  relevant
Restricted  Subsidiary  to (i) within 12 months after the date Net Cash Proceeds
so received exceed 10% of Adjusted Consolidated Net Tangible Assets (A) apply an
amount   equal  to  such  excess  Net  Cash   Proceeds  to   permanently   repay
unsubordinated  Indebtedness  of GST or GST USA,  Indebtedness of any Restricted
Subsidiary  (other than GST USA),  in each case owing to a Person other than GST
or any of its  Restricted  Subsidiaries  or (B) invest an equal  amount,  or the
amount  not so  applied  pursuant  to  clause  (A) (or enter  into a  definitive
agreement  committing  to so  invest  within  12  months  after the date of such
agreement), in property or

                                      -95-

<PAGE>
assets  of a  nature  or type or that are used in a  business  (or in a  company
having  property  and  assets of a nature or type,  or  engaged  in a  business)
similar or related to the nature or type of the  property  and assets of, or the
business of, GST and its  Restricted  Subsidiaries  existing on the date of such
investment  (as  determined  in good  faith  by the  Board of  Directors,  whose
determination  shall be conclusive and evidenced by a Board Resolution) and (ii)
apply (no later than the end of the 12-month  period  referred to in clause (i))
such excess Net Cash Proceeds (to the extent not applied pursuant to clause (i))
as provided in the  following  paragraph  of this  "Limitation  on Asset  Sales"
covenant. The amount of such excess Net Cash Proceeds required to be applied (or
to be  committed  to be  applied)  during such  12-month  period as set forth in
clause (i) of the  preceding  sentence and not applied as so required by the end
of such period shall constitute "Excess Proceeds."

         If, as of the first day of any calendar month,  the aggregate amount of
Excess Proceeds not theretofore subject to an Offer to Purchase pursuant to this
"Limitation on Asset Sales"  covenant  totals at least $5.0 million,  the Issuer
must  commence,  not later than the  fifteenth  Business Day of such month,  and
consummate  an  Offer  to  Purchase  from the  Holders  on a pro  rata  basis an
aggregate  Accreted Value of Notes equal to the Excess Proceeds on such date, at
a  purchase  price  equal  to 101% of the  Accreted  Value  of the  Notes on the
relevant Payment Date, plus, in each case, accrued interest to the Payment Date.

         GST Network will not, and will not permit any Subsidiary to, consummate
any Asset Sale except as permitted under the Pledge Agreement.

  IMPAIRMENT OF SECURITY INTERESTS OR ABILITY TO ASSUME THE NOTES

         The Indenture provides that none of GST, GST USA nor GST Network shall,
nor shall they  permit any  Subsidiary  to, take or  knowingly  omit to take any
action  which (i) might or would have the  result of  materially  impairing  the
security  interest  with  respect  to  the  Pledged  Securities,   any  Acquired
Equipment,  the Fee Notes or  Intercompany  Notes for the benefit of the Trustee
and the Holders of the Notes, (ii) grant to any Person other than the Trustee or
the Holders of the Notes,  any interest  whatsoever  in the Pledged  Securities,
other amounts in the Pledge Account,  any Acquired  Equipment,  the Fee Notes or
any Intercompany  Note, (iii) would prevent,  or restrict GST USA from assuming,
or GST from  guaranteeing,  the Notes on May 1, 2003 or earlier if  permitted by
the Existing  Indentures or (iv) would prevent, or restrict GST USA from issuing
Fee Notes to GST Network.

  REPURCHASE OF NOTES UPON A CHANGE OF CONTROL

         The Issuer must commence,  within 30 days of the occurrence of a Change
of Control,  and consummate an Offer to Purchase for all Notes then outstanding,
at a purchase  price equal to 101% of the Accreted Value thereof on the relevant
Payment Date, plus accrued interest to the Payment Date. Prior to the mailing of
the notice to Holders commencing such Offer to Purchase, but in any event within
30 days  following any Change of Control,  the Issuer  covenants to (i) repay in
full all  indebtedness  of the Issuer that would  prohibit the repurchase of the
Notes  pursuant to such Offer to Purchase or (ii) obtain any requisite  consents
under  instruments  governing any such  indebtedness of the Issuer to permit the
repurchase of the Notes.  The Issuer shall first comply with the covenant in the
preceding sentence before it shall repurchase Notes pursuant to this "Repurchase
of Notes upon a Change of Control" covenant.

         Under the terms of the Indenture,  if the Issuer is unable to repay all
of its indebtedness that would prohibit  repurchase of the Notes or is unable to
obtain the  consents  of the  holders  of  indebtedness,  if any,  of the Issuer
outstanding  at the  time of a  Change  of  Control  whose  consent  would be so
required to permit the  repurchase  of Notes or otherwise  fails to purchase any
Notes,  then the Issuer  will have  breached  such  covenant.  This  breach will
constitute  an Event of Default under the Indenture if it continues for a period
of 30  consecutive  days  after  written  notice  is given to the  Issuer by the
Trustee or the  Holders  of at least 25% in  aggregate  principal  amount of the
Notes outstanding. In addition, the failure by the Issuer to repurchase Notes at
the  conclusion  of an Offer to  Purchase  will  constitute  an Event of Default
without any waiting period or notice requirements.

                                      -96-

<PAGE>
         There can be no assurance  that the Issuer will have  sufficient  funds
available  at the  time of any  Change  of  Control  to make  any  debt  payment
(including  repurchases of Notes) required by the foregoing covenant (as well as
may be contained in other securities of the Issuer which might be outstanding at
the time). The above covenant requiring the Issuer to repurchase the Notes will,
unless the consents referred to above are obtained,  require the Issuer to repay
all indebtedness  then  outstanding  which by its terms would prohibit such Note
repurchase, either prior to or concurrently with such Note repurchase.

  COMMISSION REPORTS AND REPORTS TO HOLDERS

         At all  times  from  and  after  the  earlier  of (i)  the  date of the
commencement of an Exchange Offer or the effectiveness of the Shelf Registration
Statement  (the  "Registration")  and (ii) six months after the Closing Date, in
either  case,  whether or not GST Network is then  required to file reports with
the Commission,  GST Network shall file with the Commission all such reports and
other  information  as it would be  required  to file  with  the  Commission  by
Sections  13(a) or 15(d) under the Exchange Act if it were subject  thereto.  In
addition,  at all times prior to the earlier of the date of the Registration and
six months after the Closing Date,  GST Network shall,  at its cost,  deliver to
each Holder of the Notes quarterly and annual reports  substantially  equivalent
to those which would be required by the Exchange Act. In addition,  at all times
prior to the  Registration,  upon the  request of any Holder or any  prospective
purchaser of the Notes designated by a Holder,  GST Network shall supply to such
Holder or such  prospective  purchaser the information  required under Rule 144A
under the  Securities  Act.  Whether or not GST is required to file reports with
the Commission, if any Notes are outstanding, GST shall file with the Commission
all such reports and other  information as it would be required to file with the
Commission  by Sections  13(a) or 15(d) under the Exchange  Act. GST Network and
GST shall  supply the Trustee  and each  Holder of Notes or shall  supply to the
Trustee for  forwarding to each Holder,  without cost to such Holder,  copies of
such reports or other information.

EVENTS OF DEFAULT

         The following events are defined as "Events of Default": (a) default in
the payment of  principal  of (or  premium,  if any,  on) any Note when the same
becomes due and payable at maturity, upon acceleration, redemption or otherwise;
(b) default in the payment of interest on any Note when the same becomes due and
payable, and such default continues for a period of 30 days; (c) GST, GST USA or
GST Network  defaults in the  performance  of or breaches any other  covenant or
agreement in the Indenture or under the Notes, the Note Guarantee, the Fee Notes
or the  Intercompany  Notes and such default or breach continues for a period of
30 consecutive days after written notice by the Trustee or the Holders of 25% or
more in aggregate  principal  amount of Notes;  (d) there occurs with respect to
any issue or issues of Indebtedness of GST or any Significant  Subsidiary having
an outstanding  principal  amount of $5 million or more in the aggregate for all
such issues of all such Persons,  whether such  Indebtedness now exists or shall
hereafter be created, (I) an event of default that has caused the holder thereof
to declare such  Indebtedness to be due and payable prior to its Stated Maturity
and such  Indebtedness has not been discharged in full or such  acceleration has
not been rescinded or annulled within 30 days of such  acceleration  and/or (II)
the failure to make a principal payment at the final (but not any interim) fixed
maturity and such defaulted payment shall not have been made, waived or extended
within 30 days of such  payment  default;  (e) any final  judgment or order (not
covered by  insurance)  for the  payment of money in excess of $5 million in the
aggregate  for all such  final  judgments  or orders  against  all such  Persons
(treating any deductibles,  self-insurance or retention as not so covered) shall
be rendered against GST, GST USA, GST Network or any Significant  Subsidiary and
shall not be paid or discharged, and there shall be any period of 30 consecutive
days  following  entry of the final  judgment or order that causes the aggregate
amount  for all such  final  judgments  or  orders  outstanding  and not paid or
discharged  against all such Persons to exceed $5 million during which a stay of
enforcement  of such final  judgment or order,  by reason of a pending appeal or
otherwise,  shall  not be in  effect;  (f) a court  having  jurisdiction  in the
premises enters a decree or order for (A) relief in respect of GST, GST USA, GST
Network  or  any  Significant  Subsidiary  in  an  involuntary  case  under  any
applicable  bankruptcy,  insolvency  or other  similar law now or  hereafter  in
effect, (B) appointment of a receiver, liquidator, assignee, custodian, trustee,
sequestrator or similar official of GST,

                                      -97-

<PAGE>
GST USA, GST Network or any Significant  Subsidiary (other than a liquidation of
GST Network into GST USA in connection  with the assumption of the Notes) or for
all or substantially all of the property and assets of GST, GST USA, GST Network
or any  Significant  Subsidiary  or (C) effects any general  assignment  for the
benefit of creditors;  (h) the Trustee or GST Network does not have at all times
a first priority  perfected  security  interest in all Pledged  Securities,  the
Pledge Account, all Acquired Equipment,  the Fee Notes and Intercompany Notes or
GST, GST USA or GST Network  asserts in writing  that the security  arrangements
under the  Indenture,  the Pledge  Account,  the Fee Notes and the  Intercompany
Notes are not in full force and  effect;  or (i) GST USA shall not have become a
direct obligor on the Notes (other than Notes to be redeemed as described  under
"Mandatory Redemption" for which GST Network shall have deposited the redemption
price) and GST shall not have become a guarantor of the Notes by May 1, 2003.

         If an Event of Default  (other  than an Event of Default  specified  in
clause (f) or (g) above that occurs with  respect to GST USA, GST or GST Network
or clause (h) above) occurs and is continuing  under the Indenture,  the Trustee
or the Holders of at least 25% in aggregate  principal amount of the outstanding
Notes,  by written  notice to the Issuer  (and to the  Trustee if such notice is
given by the  Holders),  may,  and the  Trustee at the  request of such  Holders
shall, declare the Accreted Value of, premium, if any, and accrued interest,  on
the Notes to be immediately due and payable. Upon a declaration of acceleration,
such Accreted Value premium,  if any, and accrued  interest shall be immediately
due and payable. In the event of a declaration of acceleration  because an Event
of Default set forth in clause (d) above has  occurred and is  continuing,  such
declaration of acceleration shall be automatically rescinded and annulled if the
event of default  triggering such Event of Default  pursuant to clause (d) shall
be remedied or cured by GST or the relevant Significant  Subsidiary or waived by
the holders of the relevant Indebtedness within 60 days after the declaration of
acceleration  with respect thereto.  If an Event of Default  specified in clause
(f) or (g) above occurs with respect to GST USA, GST, or GST Network or an Event
of Default  specified in clause (h) occurs,  the Accreted Value of, premium,  if
any, and accrued interest, on the Notes then outstanding shall ipso facto become
and be immediately  due and payable  without any declaration or other act on the
part of the  Trustee  or any  Holder.  The  Holders  of at least a  majority  in
principal amount of the outstanding Notes by written notice to the Issuer and to
the Trustee,  may waive all past Defaults and rescind and annul a declaration of
acceleration and its  consequences if (i) all existing Events of Default,  other
than the  nonpayment of the principal of,  premium,  if any, and interest on the
Notes that have become due solely by such declaration of acceleration, have been
cured or waived and (ii) the rescission  would not conflict with any judgment or
decree of a court of competent jurisdiction. For information as to the waiver of
defaults, see "--Modification and Waiver."

         The Holders of at least a majority in aggregate principal amount of the
outstanding  Notes may  direct  the time,  method  and place of  conducting  any
proceeding  for any remedy  available to the Trustee or exercising  any trust or
power  conferred on the Trustee.  However,  the Trustee may refuse to follow any
direction that conflicts with law or the Indenture, that may involve the Trustee
in  personal  liability,  or that the  Trustee  determines  in good faith may be
unduly  prejudicial  to the rights of Holders of Notes not joining in the giving
of such  direction  and may take any other  action it deems  proper  that is not
inconsistent  with any such  direction  received from Holders of Notes. A Holder
may not pursue any remedy with respect to the Indenture or the Notes unless: (i)
the Holder gives the Trustee  written  notice of a continuing  Event of Default;
(ii) the Holders of at least 25% in aggregate  principal  amount of  outstanding
Notes make a written  request to the  Trustee to pursue the  remedy;  (iii) such
Holder or  Holders  offer and,  if  requested  provide,  the  Trustee  indemnity
satisfactory  to the Trustee against any costs,  liability or expense;  (iv) the
Trustee  does not comply  with the request  within 60 days after  receipt of the
request  and the offer of  indemnity;  and (v) during such  60-day  period,  the
Holders of a majority in aggregate  principal amount of the outstanding Notes do
not give the Trustee a direction that is inconsistent with the request. However,
such  limitations  do not apply to the right of any  Holder of a Note to receive
payment of the  principal of,  premium,  if any, or interest on, such Note or to
bring suit for the  enforcement  of any such  payment,  on or after the due date
expressed  in the Notes,  which right shall not be impaired or affected  without
the consent of the Holder.

         The Indenture requires certain officers of the Issuer to certify, on or
before a date not more than 90 days after the end of each  fiscal  year,  that a
review has been  conducted of the  activities  of GST  Network,  GST and GST USA
under the  Indenture  and that GST Network,  GST and GST USA have  fulfilled all
obligations thereunder, or,

                                      -98-

<PAGE>
if  there  has  been a  default  in the  fulfillment  of  any  such  obligation,
specifying each such default and the nature and status thereof.  The Issuer will
also be  obligated  to notify the  Trustee of any  default  or  defaults  in the
performance of any covenants or agreements under the Indenture.

CONSOLIDATION, MERGER AND SALE OF ASSETS

         Under  the  terms  of the  Indenture,  neither  GST nor  GST USA  shall
consolidate  with,  merge  with or into,  or sell,  convey,  transfer,  lease or
otherwise  dispose of all or substantially all of its property and assets (as an
entirety or  substantially an entirety in one transaction or a series of related
transactions)  to, any Person (other than a consolidation or merger with or into
a Wholly Owned Restricted  Subsidiary with a positive net worth;  provided that,
in connection with any such merger or  consolidation,  no  consideration  (other
than Common Stock in the  surviving  Person,  GST or GST USA) shall be issued or
distributed to the stockholders of GST or GST USA) or permit any Person to merge
with or into GST or GST USA unless:  (i) GST or GST USA shall be the  continuing
Person,  or  the  Person  (if  other  than  GST  or  GST  USA)  formed  by  such
consolidation  or into which GST or GST USA is merged or that acquired or leased
such property and assets of GST or GST USA shall be a corporation  organized and
validly  existing  under  the  laws  of the  United  States  of  America  or any
jurisdiction  thereof and shall expressly assume,  by a supplemental  indenture,
executed and delivered to the Trustee, all of the obligations of GST or GST USA,
on all of the Notes, the Intercompany Notes and the Note Guarantee and under the
Indenture; (ii) immediately after giving effect to such transaction,  no Default
or Event of Default shall have  occurred and be  continuing;  (iii)  immediately
after giving effect to such  transaction on a pro forma basis, GST or GST USA or
any Person becoming the successor obligor of the Notes or the Note Guarantee, as
the case may be,  shall have a  Consolidated  Net Worth equal to or greater than
the  Consolidated  Net Worth of GST or GST USA, as the case may be,  immediately
prior  to  such  transaction;  (iv)  immediately  after  giving  effect  to such
transaction  on a pro  forma  basis  GST or GST USA,  as the case may be, or any
Person becoming the successor obligor of the Notes or the Note Guarantee, as the
case may be,  could  Incur  at  least  $1.00 of  Indebtedness  under  the  first
paragraph of the "Limitation on Indebtedness"  covenant; and (v) GST or GST USA,
as the case may be, delivers to the Trustee an Officers' Certificate  (attaching
the arithmetic  computations  to demonstrate  compliance  with clauses (iii) and
(iv)) and  Opinion of Counsel,  in each case  stating  that such  consolidation,
merger or transfer and such supplemental  indenture complies with this provision
and all conditions  precedent  provided for herein relating to such  transaction
have been complied with; provided, however, that clauses (iii) and (iv) above do
not apply if, in the good faith  determination  of the Board of Directors of GST
or GST USA, as the case may be,  whose  determination  shall be  evidenced  by a
Board  Resolution,  the principal  purpose of such  transaction is to change the
jurisdiction of  incorporation  of GST to a state of the United States or of GST
USA to another state of the United  States;  and provided  further that any such
transaction  shall not have as one of its purposes the evasion of the  foregoing
limitations.

         The  restrictions and conditions  described in the preceding  paragraph
also apply to GST Network  except that clauses  (iii) and (iv) do not apply to a
merger or  consolidation  of GST USA and GST Network or the sale,  conveyance or
other  disposition of all or  substantially  all of the assets of GST Network to
GST USA.

DEFEASANCE

         DEFEASANCE AND DISCHARGE.  The Indenture  provides that the Issuer will
be deemed to have paid and GST, GST USA and GST Network will be discharged  from
any and all  obligations  in  respect  of the  Notes on the  123rd day after the
deposit referred to below, and the provisions of the Indenture will no longer be
in effect with respect to the Notes (except for,  among other  matters,  certain
obligations to register the transfer or exchange of the Notes to replace stolen,
lost or  mutilated  Notes,  to maintain  paying  agencies and to hold monies for
payment in trust) if, among other things,  (A) the Issuer has deposited with the
Trustee,  in trust,  money and/or U.S.  Government  Obligations that through the
payment of interest and principal in respect  thereof in  accordance  with their
terms  will  provide  money in an amount  sufficient  to pay the  principal  of,
premium,  if any,  and accrued  interest on the Notes on the Stated  Maturity of
such payments in accordance  with the terms of the Indenture and the Notes,  (B)
the Issuer

                                      -99-

<PAGE>
has  delivered to the Trustee (i) either (x) an Opinion of Counsel to the effect
that Holders will not recognize  income,  gain or loss for United States federal
income tax  purposes as a result of the  Issuer's  exercise of its option  under
this "Defeasance"  provision and will be subject to United States federal income
tax on the same  amount  and in the same  manner as would  have been the case if
such  deposit,  defeasance  and  discharge  had not  occurred,  which Opinion of
Counsel must be based upon (and accompanied by a copy of) a ruling of the United
States  Internal  Revenue  Service to the same  effect  unless  there has been a
change in applicable United States federal income tax law after the Closing Date
such that a ruling is no longer required or (y) a ruling directed to the Trustee
received from the United States  Internal  Revenue Service to the same effect as
the  aforementioned  Opinion of Counsel;  (ii) an Opinion of Counsel or a ruling
from Revenue Canada,  Customs, Excise & Taxation to the effect that Holders will
not  recognize  income,  gain  or  loss  for  Canadian  federal,  provincial  or
territorial  income tax or other tax  purposes  as a result of such  deposit and
defeasance and will be subject to Canadian federal or provincial  income tax and
other tax on the same amounts, in the same manner and at the same times as would
have  been the case  had such  deposit  and  defeasance  not  occurred  (and for
purposes of such opinion, such Canadian counsel shall assume that Holders of the
Notes include  Holders who are not resident in Canada);  and (iii) an Opinion of
Counsel to the effect that the creation of the defeasance trust does not violate
the  Investment  Company Act of 1940 and after the passage of 123 days following
the deposit,  the trust fund will not be subject to the effect of Section 547 of
the United  States  Bankruptcy  Code or  Section  15 of the New York  Debtor and
Creditor Law, (C) immediately after giving effect to such deposit on a pro forma
basis, no Event of Default, or event that after the giving of notice or lapse of
time or both  would  become an Event of  Default,  shall  have  occurred  and be
continuing  on the date of such deposit or during the period ending on the 123rd
day after  the date of such  deposit,  and such  deposit  shall not  result in a
breach or violation of, or constitute a default  under,  any other  agreement or
instrument to which the Issuer or any of its Subsidiaries is a party or by which
the Issuer or any of its Subsidiaries is bound and (D) if at such time the Notes
are listed on a national  securities  exchange,  the Issuer has delivered to the
Trustee an Opinion of Counsel to the effect  that the Notes will not be delisted
as a result of such deposit, defeasance and discharge.

         DEFEASANCE  OF CERTAIN  COVENANTS  AND CERTAIN  EVENTS OF DEFAULT.  The
Indenture  further provides that its provisions will no longer be in effect with
respect  to  clauses  (iii) and (iv)  under  "Consolidation,  Merger and Sale of
Assets" and all the covenants  described  herein under  "Covenants,"  clause (c)
under "Events of Default"  with respect to such  covenants and clauses (iii) and
(iv) under "Consolidation,  Merger and Sale of Assets," and clauses (d), (e) and
(h) under "Events of Default"  shall be deemed not to be Events of Default upon,
among other things, the deposit with the Trustee, in trust, of money and/or U.S.
Government  Obligations  that through the payment of interest  and  principal in
respect  thereof in accordance  with their terms will provide money in an amount
sufficient to pay the principal of, premium, if any, and accrued interest on the
Notes on the Stated  Maturity of such payments in  accordance  with the terms of
the Indenture and the Notes,  the  satisfaction  of the provisions  described in
clauses B(iii),  (C) and (D) of the preceding  paragraph and the delivery by the
Issuer to the Trustee of an Opinion of Counsel to the effect  that,  among other
things,  the Holders will not recognize  income,  gain or loss for United States
federal  income tax  purposes or Canadian  federal,  provincial  or  territorial
income tax or other tax purposes as a result of such deposit and  defeasance  of
certain  covenants  and Events of Default  and will be subject to United  States
federal  income tax and Canadian  federal or  provincial  income tax on the same
amount and in the same  manner and at the same times as would have been the case
if such deposit and defeasance had not occurred.

         DEFEASANCE AND CERTAIN OTHER EVENTS OF DEFAULT. In the event the Issuer
exercises its option to omit compliance with certain covenants and provisions of
the  Indenture  with  respect  to the  Notes  as  described  in the  immediately
preceding  paragraph  and the Notes are declared due and payable  because of the
occurrence of an Event of Default that remains  applicable,  the amount of money
and/or  U.S.  Government  Obligations  on  deposit  with  the  Trustee  will  be
sufficient to pay amounts due on the Notes at the time of their Stated  Maturity
but may not be  sufficient  to pay  amounts  due on the Notes at the time of the
acceleration  resulting  from such Event of  Default.  However,  the Issuer will
remain liable for such payments.


                                      -100-

<PAGE>
MODIFICATION AND WAIVER

         Modifications  and  amendments of the Indenture may be made by GST, GST
USA and GST Network and the Trustee  with the consent of the Holders of not less
than  a  majority  in  aggregate  principal  amount  of the  outstanding  Notes;
provided,  however,  that no such  modification  or amendment  may,  without the
consent of each Holder affected  thereby,  (i) change the Stated Maturity of the
principal  of, or any  installment  of  interest  on, any Note,  (ii) reduce the
Accreted  Value or principal  of, or premium,  if any, or interest on, any Note,
(iii)  change the place or currency of payment of principal  of, or premium,  if
any, or interest on, any Note,  (iv) impair the right to institute  suit for the
enforcement of any payment on or after the Stated Maturity (or, in the case of a
redemption,  on or after  the  Redemption  Date) of any  Note,  (v)  reduce  the
above-stated  percentage  of  outstanding  Notes the consent of whose Holders is
necessary to modify or amend the Indenture,  (vi) waive a default in the payment
of principal of, premium,  if any, or interest on the Notes, or (vii) reduce the
percentage or aggregate  principal  amount of  outstanding  Notes the consent of
whose Holders is necessary for waiver of compliance  with certain  provisions of
the Indenture or for waiver of certain defaults.

         None of GST,  GST USA or GST  Network  shall  amend,  modify,  alter or
supplement or permit or consent to any amendment, modification or supplement of,
the Pledge  Agreement,  the Fee Notes or any Intercompany  Notes in any way that
would be adverse to the Holders of the Notes.

ADDITIONAL AMOUNTS

         Any payments made by GST under or with respect to the Notes pursuant to
the Note  Guarantee  will be made free and clear of and without  withholding  or
deduction for or on account of any present or future tax,  duty,  levy,  impost,
assessment or other governmental charge (including penalties, interest and other
liabilities  related thereto) imposed or levied by or on behalf of Government of
Canada or of any  province or  territory  thereof or by any  authority or agency
therein or thereof  having power to tax  (hereinafter,  "Taxes"),  unless GST is
required  to  withhold  or  deduct  Taxes  by law or by  the  interpretation  or
administration  thereof. If GST is required to withhold or deduct any amount for
or on account of Taxes from any payment made under or with respect to the Notes,
GST will pay such additional amounts ("Additional Amounts") as may be necessary,
so that the net amount  received by each Holder of Notes  (including  Additional
Amounts)  after such  withholding  or deduction will not be less than the amount
such Holder would have received if such Taxes had not been withheld or deducted;
provided,  however, that no Additional Amounts will be payable with respect to a
payment made to a Holder (an "Excluded Holder") (i) with which GST does not deal
at arm's length  (within the meaning of the Income Tax Act (Canada)) at the time
of making such payment,  or (ii) which is subject to such Taxes by reason of its
being connected with Canada or any province or territory  thereof otherwise than
solely by reason of the Holder's  activity in  connection  with  purchasing  the
Notes,  by the mere  holding of Notes or by reason of the  receipt  of  payments
thereunder. GST will, upon written request of any Holder (other than an Excluded
Holder),  reimburse  such  Holder,  for the amount of (i) any Taxes so levied or
imposed  and paid by such  Holder as a result  of  payments  made  under or with
respect to the Notes and (ii) any Taxes so levied or imposed with respect to any
reimbursement  under the  foregoing  clause (i), but excluding any such Taxes on
such  Holder's  net income so that the net amount  received by such Holder after
such  reimbursement  will not be less than the net amount the Holder  would have
received if Taxes on such reimbursement had not been imposed.

         At least 30 days prior to each date on which any payment  under or with
respect  to the  Notes  is due and  payable,  if GST  will be  obligated  to pay
Additional Amounts with respect to such payment, GST will deliver to the Trustee
an Officers'  Certificate  stating the fact that such Additional Amounts will be
payable  and the  amounts so payable  and will set forth such other  information
necessary to enable the Trustee to pay such Additional Amounts to Holders on the
payment date.  Whenever either in the Indenture or in this  Prospectus  there is
mentioned,  in any  context,  the payment of  principal  (or  premium,  if any),
Redemption Price,  interest or any other amount payable under or with respect to
the Notes,  such  mention  shall be deemed to include  mention of the payment of
Additional Amounts to the extent that, in such context,  Additional Amounts are,
were or would be payable in respect thereof.

         In the event that GST has become or would  become  obligated to pay, on
the next date on which any amount would be payable  under or with respect to the
Notes any Additional Amounts as a result of certain changes affecting

                                      -101-

<PAGE>
Canadian withholding tax laws, GST may redeem all, but not less than all, of the
Notes at any  time at 100% of  their  Accreted  Value  on the  redemption  date,
together with accrued  interest thereon to the redemption date. See "-- Optional
Redemption."

CONSENT TO JURISDICTION AND SERVICE

         GST has  appointed  Olshan  Grundman  Frome & Rosenzweig  LLP, 505 Park
Avenue,  New York,  New York  10022 as its agent for  service  of process in any
suit,  action or  proceeding  with respect to the Indenture or the Notes and for
the  actions  brought  under  federal or state  securities  laws  brought in any
federal or state court  located in The City of New York and will agree to submit
to the jurisdiction of such courts.

ENFORCEABILITY OF JUDGMENTS

         GST  is  a   corporation   incorporated   under  the  Canada   Business
Corporations  Act.  Certain  of the  directors  and the  Company's  professional
advisors are residents of Canada or otherwise  reside outside of the U.S. All or
a  substantial  portion  of the  assets of such  persons  are or may be  located
outside of the U.S. It may be difficult for U.S.  noteholders  to effect service
of  process  within  the  United  States  upon  GST or upon  such  directors  or
professional  advisors or to realize in the U.S. upon  judgments of U.S.  courts
predicated  upon civil  liability  of GST or such  persons  under  U.S.  federal
securities laws. GST has been advised that there is doubt as to whether Canadian
courts would (i) enforce  judgments of U.S. courts obtained  against GST or such
directors or professional  advisors predicated solely upon the civil liabilities
provisions  of U.S.  federal  securities  laws,  or (ii) impose  liabilities  in
original  actions  against  GST or  such  directors  and  professional  advisors
predicated  solely  upon  such  U.S.  laws.  However,  a  judgment  against  GST
predicated  solely  upon  civil  liabilities  provisions  of such  U.S.  federal
securities  laws may be  enforceable  in Canada if the U.S.  court in which such
judgment was obtained has a basis for  jurisdiction in that matter that would be
recognized by a Canadian court.

BOOK-ENTRY; DELIVERY AND FORM

         The certificates  representing the Notes are issued in fully registered
form without interest coupons.  Notes sold in offshore  transactions in reliance
on Regulation S under the Securities Act will initially be represented by one or
more  temporary  global  Notes in  definitive,  fully  registered  form  without
interest  coupons  (each a  "Temporary  Regulation  S Global  Note") and will be
deposited  with the Trustee as custodian  for, and  registered  in the name of a
nominee of, DTC for the  accounts of  Euroclear  and Cedel Bank.  The  Temporary
Regulation S Global Note will be exchangeable  for one or more permanent  global
Notes (each a  "Permanent  Regulation  S Global  Note";  and  together  with the
Temporary Regulation S Global Notes, the "Regulation S Global Note") on or after
the 40th day following the Closing Date upon  certification  that the beneficial
interests in such global Note are owned by non-U.S.  persons.  Prior to the 40th
day after the Closing Date,  beneficial  interests in the Temporary Regulation S
Global Note may be held only  through  Euroclear or Cedel Bank and any resale or
other transfer of such interests to U.S.  persons shall not be permitted  during
such period  unless  such  resale or  transfer is made  pursuant to Rule 144A or
Regulation S and in accordance with the requirements described below.

         Notes sold in reliance on Rule 144A will be  represented by one or more
permanent  global Notes in definitive,  fully  registered form without  interest
coupons (each a "Restricted  Global  Note";  and together with the  Regulation S
Global  Note,  the  "Global  Notes") and will be  deposited  with the Trustee as
custodian for, and registered in the name of a nominee of, DTC.

         Each Global Note (and any Notes issued for exchange  therefor)  will be
subject to certain restrictions on transfer set forth therein as described under
"Transfer Restrictions."

         Notes   originally   purchased  by  or  transferred  to   Institutional
Accredited  Investors who are not qualified  institutional  buyers  ("Non-Global
Purchasers")  will be issued Notes in registered form without  interest  coupons
("Certificated Notes"). Upon the transfer of Certificated Notes initially issued
to a Non-Global Purchaser to a

                                      -102-

<PAGE>
qualified   institutional  buyer  or  in  accordance  with  Regulation  S,  such
Certificated  Notes will,  unless the relevant  Global Note has previously  been
exchanged in whole for  Certificated  Notes,  be exchanged  for an interest in a
Global  Note.  For  a  description  of  the  restrictions  on  the  transfer  of
Certificated Notes, see "Transfer Restrictions."

         The Global Notes.  Ownership of  beneficial  interests in a Global Note
will be  limited to  persons  who have  accounts  with DTC  ("participants")  or
persons  who  hold  interests  through  participants.  Ownership  of  beneficial
interests in a Global Note will be shown on, and the transfer of that  ownership
will be effected  only through,  records  maintained by DTC or its nominee (with
respect to  interests of  participants)  and the records of  participants  (with
respect  to   interests   of  persons   other  than   participants).   Qualified
institutional  buyers may hold  their  interests  in a  Restricted  Global  Note
directly  through DTC if they are  participants  in such system,  or  indirectly
through organizations which are participants in such system.

         Investors  may hold  their  interests  in a  Regulation  S Global  Note
directly  through  Cedel Bank or  Euroclear,  if they are  participants  in such
systems,  or indirectly  through  organizations  that are  participants  in such
system.  Cedel Bank and Euroclear will hold interests in the Regulation S Global
Notes on behalf of their participants through DTC.

         So long as DTC, or its nominee,  is the registered owner or holder of a
Global Note,  DTC or such nominee,  as the case may be, will be  considered  the
sole  owner or holder  of the  Notes  represented  by such  Global  Note for all
purposes under the Indenture and the Notes.  No beneficial  owner of an interest
in a Global Note will be able to transfer  that  interest  except in  accordance
with the  applicable  procedures of DTC, in addition to those provided for under
the Indenture and, if applicable, those of Euroclear and Cedel Bank.

         Payments of the  principal  of, and  interest on, a Global Note will be
made to DTC or its nominee, as the case may be, as the registered owner thereof.
Neither   the  Issuer,   the  Trustee  nor  any  Paying   Agent  will  have  any
responsibility  or  liability  for any  aspect  of the  records  relating  to or
payments made on account of beneficial  ownership  interests in a Global Note or
for  maintaining,   supervising  or  reviewing  any  records  relating  to  such
beneficial ownership interests.

         The Issuer expects that DTC or its nominee, upon receipt of any payment
of principal or interest in respect of a Global Note, will credit  participants'
accounts with payments in amounts  proportionate to their respective  beneficial
interests in the principal amount of such Global Note as shown on the records of
DTC or its nominee.  The Issuer also expects that  payments by  participants  to
owners  of   beneficial   interests  in  such  Global  Note  held  through  such
participants will be governed by standing  instructions and customary practices,
as is now the case with securities held for the accounts of customers registered
in the  names  of  nominees  for  such  customers.  Such  payments  will  be the
responsibility of such participants.

         Transfers between  participants in DTC will be effected in the ordinary
way in  accordance  with  DTC  rules  and will be  settled  in  same-day  funds.
Transfers  between  participants in Euroclear and Cedel Bank will be effected in
the  ordinary  way in  accordance  with  their  respective  rules and  operating
procedures.

         The Issuer expects that DTC will take any action  permitted to be taken
by a holder  of Notes  (including  the  presentation  of Notes for  exchange  as
described  below) only at the  direction  of one or more  participants  to whose
account the DTC  interests  in a Global Note is credited  and only in respect of
such  portion  of the  aggregate  principal  amount  of Notes  as to which  such
participant or participants has or have given such direction.  However, if there
is an Event of Default under the Notes, DTC will exchange the applicable  Global
Note for  Certificated  Notes,  which it will distribute to its participants and
which may be legended as set forth under the heading "Transfer Restrictions."

         The Issuer  understands  that:  DTC is a limited  purpose trust company
organized  under  the laws of the State of New York,  a  "banking  organization"
within the  meaning of New York  Banking  Law, a member of the  Federal  Reserve
System, a "clearing  corporation"  within the meaning of the Uniform  Commercial
Code and a "Clearing

                                      -103-

<PAGE>
Agency" registered  pursuant to the provisions of Section 17A under the Exchange
Act. DTC was created to hold securities for its  participants and facilitate the
clearance and settlement of securities transactions between participants through
electronic   book-entry  changes  in  accounts  of  its  participants,   thereby
eliminating  the need for physical  movement of  certificates  and certain other
organizations.  Indirect access to the DTC system is available to others such as
banks,  brokers,  dealers and trust  companies  that clear through or maintain a
custodial  relationship  with  a  participant,  either  directly  or  indirectly
("indirect participants").

         Although  DTC,  Euroclear  and Cedel  Bank are  expected  to follow the
foregoing  procedures in order to facilitate  transfers of interests in a Global
Note among  participants  of DTC,  Euroclear  and Cedel Bank,  they are under no
obligation  to  perform  or  continue  to  perform  such  procedures,  and  such
procedures may be discontinued  at any time.  Neither the Issuer nor the Trustee
will have any responsibility for the performance by DTC, Euroclear or Cedel Bank
or their  respective  participants or indirect  participants of their respective
obligations under the rules and procedures governing their operations.

CERTIFICATED NOTES

         If DTC is at any time  unwilling  or unable to continue as a depositary
for the Global Notes and a successor  depositary  is not appointed by the Issuer
within 90 days,  the Issuer will issue  Certificated  Notes,  which may bear the
legend  referred to under  "Transfer  Restrictions,"  in exchange for the Global
Notes.  Holders of an interest in a Global Note may receive  Certificated Notes,
which  may  bear  the  legend  referred  to under  "Transfer  Restrictions,"  in
accordance with the DTC's rules and procedures in addition to those provided for
under the Indenture.

NO PERSONAL  LIABILITY OF INCORPORATORS,  SHAREHOLDERS,  OFFICERS,  DIRECTORS OR
EMPLOYEES

         The  Indenture  provides  that  no  recourse  for  the  payment  of the
principal of, premium,  if any, or interest on any of the Notes or for any claim
based thereon or otherwise in respect thereof, and no recourse under or upon any
obligation,  covenant  or  agreement  of  GST,  GST  USA or GST  Network  in the
Indenture, or in any of the Notes or because of the creation of any Indebtedness
represented  thereby,  shall  be  had  against  any  incorporator,  shareholder,
officer, director, employee or controlling person of GST, GST USA or GST Network
or of any successor Person thereof.  Each Holder by accepting the Notes,  waives
and releases all such liability.

CONCERNING THE TRUSTEE

         The  Indenture  provides  that,  except  during  the  continuance  of a
Default,  the Trustee  will not be liable,  except for the  performance  of such
duties as are specifically  set forth in such Indenture.  If an Event of Default
has occurred and is continuing, the Trustee will use the same degree of care and
skill in its exercise of the rights and powers  vested in it under the Indenture
as a prudent  person would exercise  under the  circumstances  in the conduct of
such person's own affairs.

         The Indenture and provisions of the Trust  Indenture Act,  incorporated
by reference therein,  contain limitations on the rights of the Trustee,  should
it become a creditor of the Issuer, to obtain payment of claims in certain cases
or to realize on certain property  received by it in respect of any such claims,
as  security  or  otherwise.  The  Trustee  is  permitted  to  engage  in  other
transactions;  provided,  however,  that if the Trustee acquires any conflicting
interest, it must eliminate such conflict or resign.

         United  States  Trust  Company  of New York is the  Trustee  under  the
Existing Indentures.

                                      -104-

<PAGE>
       DESCRIPTION OF CERTAIN INDEBTEDNESS AND REDEEMABLE PREFERRED SHARES

TOMEN FACILITY

         The  following  summary of the  material  provisions  of the  documents
comprising the Tomen Facility does not purport to be complete and is subject to,
and  qualified  in its  entirety by  reference  to, all the  provisions  of such
documents,  including the  definitions of certain terms therein.  Terms used and
not defined  herein have the meanings  given to them in the documents  described
herein.

  GENERAL

         The Company,  GST Telecom and Pacwest are parties to a Master Agreement
dated October 24, 1994 and amended May 24, 1996 (the "Tomen  Master  Agreement")
with  Tomen  pursuant  to  which  Tomen  agreed,  in its  sole  discretion  on a
project-by-project  basis,  to make available up to a total of $100.0 million of
financing for  telecommunications  network projects developed and constructed by
the  Company.  Under  the  terms of the Tomen  Master  Agreement,  Tomen has the
exclusive right to review the Company's  proposed  network  projects until Tomen
has extended $100.0 million in debt financing or has refused three projects that
the Company  subsequently  finances.  If Tomen approves a project it would enter
into a credit  agreement  (in  substantially  the form of the  Credit  Agreement
hereinafter described) with the subsidiary of the Company developing the project
(a "Development Company") to provide financing for 75% of the project's costs (a
"Project  Loan").  The first 25% of such costs would be contributed as equity by
the Company  prior to or at the same time as the receipt of the debt  financing.
In  connection  with each  project  it  finances,  Tomen has the right to act as
procurement agent for the network project.

         Until amended in May 1996, the Tomen Master Agreement had provided that
Tomen could  purchase up to 10% (on a fully diluted  basis) of the capital stock
of a Development  Company to which it agreed to provide  financing and Tomen had
purchased 10% of the equity of GST Pacific for the sum of $615,000. In May 1996,
the Company entered into a series of transactions  pursuant to which GST Telecom
purchased the shares of GST Pacific held by Tomen for $1,250,000 and the parties
amended the Tomen Master Agreement to eliminate Tomen's right to purchase 10% of
the shares in  Development  Companies to which it provides a Project Loan and to
grant to Tomen in  connection  with each  Project  Loan the right to  purchase a
number of Common Shares the aggregate value of which based on their market price
would  equal  10%  of the  total  equity  contribution  by  the  Company  to the
Development  Company.  In addition,  the parties agreed that in connection  with
certain Project Loans,  Tomen's purchase of Common Shares would include,  for no
additional consideration,  a specified number of warrants to purchase additional
Common Shares.

         The Tomen Master  Agreement  provides  that each Project Loan will bear
interest  at  LIBOR  plus 3% and  will  amortize  in 24  quarterly  installments
beginning  after the project's  construction  period (which may not exceed three
years).  An  upfront  fee of 1.50% of the  aggregate  principal  amount  of each
Project  Loan and a commitment  fee of 0.50% per annum on the unused  portion of
each Project Loan is payable to Tomen. In addition,  until October 1997 Pacwest,
an entity  controlled by Mr. Warta,  a director of the Company and the Company's
former Chairman of the Board and Chief Executive  Officer,  had been entitled to
receive a fee equal to 1% of the total debt and equity financing received by the
Company under the Tomen Facility.  A Project Loan may be repaid or refinanced at
any time;  however,  Tomen has a right of first refusal on any such  refinancing
and Tomen would be entitled to receive one-third of the net present value of any
interest  rate  savings  that would be  realized by the  Development  Company in
connection with any such refinancing.

         Each Project Loan is to be secured by all of the Development  Company's
assets  and a  pledge  of all  capital  stock  of the  Development  Company.  In
addition,  the Tomen Master  Agreement  requires  that the net cash flow of each
project financed under the Tomen Facility be assigned to secure the repayment of
each other Project Loan. Any management fees payable by the Development  Company
are subordinated in right of payment to the repayment of Project Loans.

                                      -105-

<PAGE>
         Pursuant  to a stock  purchase  agreement  (the "Tomen  Stock  Purchase
Agreement")  entered into in connection with the Tomen Master  Agreement,  Tomen
purchased (i) for an aggregate  purchase  price of $2.3 million,  500,000 Common
Shares  and  warrants  to  purchase  250,000  Common  Shares,  which  have  been
exercised,  (ii) for an aggregate of $1.2  million,  250,000  Common  Shares and
warrants to purchase 125,000 Common Shares, which have been exercised, and (iii)
for an aggregate of $2.7 million, 250,000 Common Shares and warrants to purchase
125,000  Common Shares  exercisable  until May 23, 1998 at an exercise  price of
$12.96 per share. Pursuant to an amendment to the Tomen Master Agreement and the
Tomen  Stock  Purchase  Agreement,  Tomen  purchased  (i)  for an  aggregate  of
$800,000,  74,074 Common Shares and warrants to purchase 46,155 Common Shares at
an exercise price of $12.96 per share and (ii) for an aggregate of $1.4 million,
130,828  Common  Shares and  warrants to  purchase  75,000  Common  Shares at an
exercise price of $12.61 per share.  The Company has registered the resale of an
aggregate  of 1,620,229  Common  Shares that have been issued or are issuable to
Tomen upon exercise of warrants.

  FINANCED PROJECTS

         The first two projects  financed under the Tomen Master  Agreement were
the San Bernardino  portion of the Southern  California  network ("Phase I") and
the Ontario portion of the Southern California network ("Phase II"). Pursuant to
the  credit  agreement  between  GST  Pacific  and Tomen  America  (the  "Credit
Agreement"),  Tomen agreed to provide $9.0 million of debt  financing to develop
Phase I and $9.5 million of debt financing to develop Phase II. The terms of the
Credit Agreement are  substantially  the terms  contemplated by the Tomen Master
Agreement.  In addition,  the Credit Agreement  contains  covenants which, among
other things,  restrict or prohibit GST Pacific's  ability to incur debt, create
liens, sell assets,  make investments,  enter into transactions with affiliates,
merge or consolidate,  transfer GST Pacific's capital stock and pay dividends to
the Company.  Failure to satisfy any of the  covenants  constitutes  an event of
default under the Credit Agreement. The Credit Agreement also contains customary
events of default for  project  financing,  including  a cross  default to other
indebtedness  of GST  Pacific.  An event of default  under the Credit  Agreement
would allow Tomen to accelerate  the maturity of the Project Loan,  foreclose on
the collateral or take possession of and complete the project.

         In May 1996,  Tomen  provided  financing with respect to the Tucson and
Albuquerque networks, in the amount of up to $8.0 million each. The terms of the
respective credit agreements between Tomen and GST Tucson and GST New Mexico are
substantially similar to the terms of the Credit Agreement.

         On September  30, 1997,  Tomen agreed to provide the Company with up to
$40.5  million  of  debt  financing  for  the  Company's  Hawaiian  inter-island
submarine  network and various other  terrestrial  installations.  In connection
with such  financing,  the Company  entered into a credit  agreement  with Tomen
containing  substantially  similar terms as those previously  entered into under
the  Tomen  Facility,  except  that  the  loan  will  amortize  in 22  quarterly
installments beginning March 31, 2000.

EQUIPMENT FINANCING

  SIEMENS SWITCHING EQUIPMENT PURCHASE AGREEMENT AND LOAN AGREEMENT

         The Company, through its indirect subsidiary,  GST SwitchCo, Inc. ("GST
SwitchCo"),  entered into a Switching  Products  Sales  Agreement  (the "Siemens
Sales  Agreement")  pursuant to which GST SwitchCo may  purchase  switching  and
related  equipment  from Siemens.  The Siemens Sales  Agreement  provides  price
protection for 10 years for several  categories of Siemens  switching  equipment
and related software.  In addition,  on the same date, GST SwitchCo entered into
the Siemens  Loan  Agreement  that  provides  for up to an  aggregate  of $226.0
million of loans to finance the purchase of Siemens equipment and equipment from
other suppliers,  of which $116.0 million is presently  available to the Company
(of which $7.9 million had been provided as of March 31, 1998).  The Company may
seek to  increase  the amount  available  up to $226.0  million on an  as-needed
basis,  subject  to the  negotiation  and  execution  of  mutually  satisfactory
documentation.  Each loan made under the Siemens Loan Agreement  initially bears
interest at an interim loan rate of LIBOR plus 4.5% on the  outstanding  balance
of the loan

                                      -106-

<PAGE>
until the beginning of the calendar quarter  following the original loan advance
date, at which time the outstanding  balance of the loan converts to a term loan
and begins accruing  interest at a term loan rate of LIBOR plus 3.5%.  Repayment
of the  outstanding  principal  amount of each  loan is  required  in  quarterly
installments  commencing  on the last day of the  fifth  quarter  following  the
original loan advance date with the remaining  balance of each  outstanding loan
being  payable  in full on the  last  day of the  24th  quarter  following  such
original loan advance date.  GST SwitchCo's  obligations  under the Siemens Loan
Agreement  are  secured  by the grant to Siemens  of a first  priority  security
interest in all products purchased by GST SwitchCo with the proceeds of loans by
Siemens and are guaranteed in part by GST USA.

  NORTEL SWITCHING EQUIPMENT AND RELATED FINANCING

         The Company,  through its wholly-owned  subsidiary,  GST EquipCo,  Inc.
("GST EquipCo"), entered into a Network Products Purchase Agreement (the "Nortel
Purchase  Agreement")  pursuant to which GST EquipCo may purchase  switching and
related  equipment  and software  from  Nortel.  The Nortel  Purchase  Agreement
provides  price  protection  for 10  years  for  several  categories  of  Nortel
switching  equipment and related  products and software and requires GST EquipCo
to purchase at least $50.0 million of equipment,  product and software  prior to
November 18, 1999. The Company has purchased $50.0 million of equipment pursuant
to the Nortel Purchase Agreement.

         The Company has entered into the NTFC Loan  Agreement that provides for
up to $50.0  million to finance the purchase by GST EquipCo of Nortel  equipment
and products (all of which had been provided as of March 31, 1998).  Loans under
the NTFC Loan Agreement will bear interest at a floating  interest rate equal to
90 day LIBOR plus 3.5%.  GST  EquipCo is  required  to pay  interest  only until
December  31,  1998  under the NTFC Loan  Agreement  and the  principal  amounts
outstanding  thereunder will become due and payable in 20 consecutive  quarterly
installments  following  such  interest only period.  GST EquipCo's  obligations
under  the NTFC  Loan  Agreement  are  secured  by the  grant to NTFC of a first
priority security interest in all Nortel products  purchased by GST EquipCo with
the proceeds of such financing and are guaranteed by GST USA.

SENIOR NOTES AND CONVERTIBLE NOTES

         GST USA issued $312.4  million  principal  amount at maturity of Senior
Notes guaranteed by GST, under a senior notes indenture dated December 19, 1995,
among GST USA, as issuer, GST, as guarantor,  and United States Trust Company of
New York, as trustee,  and GST issued $39.1 million principal amount at maturity
of the  Convertible  Notes  guaranteed  by GST USA,  under a  convertible  notes
indenture dated December 19, 1995, among GST, as issuer,  GST USA, as guarantor,
and United  States Trust  Company of New York,  as trustee.  The 1995 Notes were
issued  in  units,  with  each unit  consisting  of eight  Senior  Notes and one
Convertible  Note.  Cash  interest  does not accrue on the 1995  Notes  prior to
December 15, 2000 at which time the 1995 Notes will have fully accreted to their
principal  amount at maturity.  From and after December 15, 2000, the 1995 Notes
will accrue  interest,  payable  semiannually  in cash, at a rate of 13 7/8% per
annum.

         The Senior Notes and the Senior Notes  guarantee are senior,  unsecured
obligations  of GST USA and GST,  respectively,  ranking  pari passu in right of
payment with all  unsubordinated  obligations of GST USA and GST,  respectively.
The  Convertible   Notes  and  the   Convertible   Notes  guarantee  are  senior
subordinated,  unsecured obligations of GST and GST USA,  respectively,  ranking
junior  in  right  of  payment  to all  senior  obligations  of GST and GST USA,
respectively,  pari passu with all senior  subordinated  indebtedness of GST and
GST USA, respectively.

         The 1995 Notes may be  redeemed  at any time on or after  December  15,
2000,  in whole or in part,  at 106.938% of their  principal  amount at maturity
plus accrued  interest,  declining to 100% of their principal amount at maturity
plus accrued  interest on and after  December 15,  2002.  In addition,  the 1995
Notes are redeemable under certain circumstances in the event of certain changes
affecting Canadian withholding taxes.


                                      -107-

<PAGE>
         The Convertible  Notes are  convertible,  at the option of the holders,
into Common  Shares.  The number of Common Shares  issuable  upon  conversion of
Convertible  Notes is determined  by dividing the accreted  value on the date of
conversion of the Convertible  Notes being converted by the conversion  price of
$7.563,  subject  to  adjustment.   In  addition,  the  Convertible  Notes  will
automatically convert under certain  circumstances,  if the closing price of the
Common  Shares  during any period  described  below  exceeds  the price for such
period for at least 30 consecutive trading days:


12 MONTHS BEGINNING                                   CLOSING PRICE

December 15, 1997                                         $19.80

December 15, 1998                                         $22.82

December 15, 1999                                         $25.84

         The 1995 Indentures  contain certain  covenants that affect and in some
cases significantly restrict or prohibit, among other things, the ability of GST
and  its  restricted  subsidiaries  (including  GST  USA)  to  incur  additional
indebtedness, create liens, engage in sale-leaseback transactions, pay dividends
or make  distributions  in respect of its capital  stock,  make  investments  or
certain other  restricted  payments,  sell assets,  create  restrictions  on the
ability of restricted subsidiaries to make certain payments, issue or sell stock
of  restricted  subsidiaries,  enter  into  transactions  with  stockholders  or
affiliates  and  consolidate,  merge or sell all or  substantially  all of their
assets.

         Upon the  occurrence of a Change of Control (as  hereinafter  defined),
GST USA will be required to make an offer to purchase  the Senior  Notes and GST
will be required to make an offer to purchase  the  Convertible  Notes,  in each
case at a purchase  price equal to 101% of their  accreted  value on the date of
purchase plus accrued interest,  if any. For purposes of the 1995 Indentures,  a
"Change of  Control"  is defined to mean such time as (i) a "person"  or "group"
(within the meaning of Sections 13(d) and 14(d)(2) of the Exchange Act,  becomes
the  ultimate  "beneficial  owner" (as defined in Rule 13d-3 under the  Exchange
Act) of voting stock representing more than 30% of the total voting power of the
voting stock of GST on a fully diluted basis;  (ii)  individuals who on December
19, 1995  constituted  the Board of Directors  (together  with any new directors
whose  election by the Board of  Directors or whose  nomination  for election by
GST's  shareholders was approved by a vote of at least two-thirds of the members
of the Board of Directors then in office who either were members of the Board of
Directors on December 19, 1995 or whose  election or nomination for election was
previously  approved)  cease for any  reason to  constitute  a  majority  of the
members of the Board of  Directors  then in  office;  or (iii) all of the common
stock of GST USA is not beneficially owned by GST.

SECURED NOTES

         GST Funding issued $265.0 million aggregate principal amount of Secured
Notes, under the Secured Notes Indenture, dated May 13, 1997, among GST Funding,
as  issuer,  GST USA,  GST,  and United  States  Trust  Company of New York,  as
trustee.  The Secured Notes will mature on May 13, 2007. Interest on the Secured
Notes  will be paid in cash at a rate of 13 1/4%  per  annum  on each  May 1 and
November 1,  commencing  November 1, 1997. Of the $255.8 million of net proceeds
from the issuance of the Secured Notes, as of March 31, 1998 approximately $93.8
million  had been  used to  purchase  securities  pledged  to fund the first six
interest payments on the Secured Notes (the first such payments of $16.4 million
having been made in November  1997) and  approximately  $115.7  million had been
used to purchase  telecommunications  equipment (including $41.5 million used to
refinance intercompany  indebtedness incurred in connection with the purchase of
equipment) which has been sold to GST USA for secured intercompany notes.

         The Secured Notes are senior,  secured obligations of GST Funding,  and
will be  unconditionally  and  irrevocably  assumed by GST USA and guaranteed by
GST, on May 13, 2000, or earlier if permitted under the

                                      -108-

<PAGE>
terms of GST USA's and GST's outstanding  indebtedness.  Neither GST USA nor GST
will be liable on the Secured Notes until they are assumed by GST USA.  There is
a substantial  risk that GST USA may be unable to assume the Secured Notes on or
before  May 13,  2000.  The Notes are  secured  by (i) the  approximately  $93.8
million of U.S. government securities (the "1997 Pledged Securities") pledged to
secure and fund the first six scheduled  interest payments on the Secured Notes,
(ii) a $35.0 million  promissory  note from GST USA (the "1997  Initial  Note"),
guaranteed  by GST;  provided  that the amount of the 1997  Initial Note will be
reduced  to the  extent the  principal  amount  thereof  exceeds  the  aggregate
principal  amount of Secured Notes less (x) the aggregate amount of 1997 Pledged
Securities  (other  than the 1997  Pledged  Securities  securing  the  first six
scheduled  interest  payments on the Secured Notes),  including accrued interest
thereon, and (y) the aggregate principal amount of all intercompany notes issued
by GST USA to GST  Funding in payment  for the  purchase  of  equipment  ($120.4
million as of March 31, 1998), including the amount of interest that will accrue
on such  intercompany  notes by May 13, 2000,  and (iii) the remaining  proceeds
from the  Secured  Notes  Offering,  until such  proceeds  are used to  purchase
equipment to be sold to GST USA for intercompany  notes.  Once the Secured Notes
are assumed by GST USA, they will be senior, secured indebtedness of GST USA and
GST USA's obligations under the Secured Notes will be fully and  unconditionally
guaranteed on an  unsubordinated  basis by GST (the "Secured Notes  Guarantee").
The Secured Notes Guarantee will be senior, unsecured indebtedness of GST.

         The Secured Notes will be redeemable at the option of GST USA, in whole
or in part, at any time or from time to time, on or after May 1, 2002, initially
at  106.625%  of their  principal  amount,  plus  accrued  and unpaid  interest,
declining  ratably to 100% of their  principal  amount,  plus accrued and unpaid
interest on or after May 1, 2004.  If on May 13, 2000 GST USA is  prohibited  by
its outstanding indebtedness from assuming all of the Secured Notes, GST Funding
will redeem, upon not less than 10 nor more than 30 days' notice, the portion of
the Secured Notes that cannot be assumed, at 101% of their principal amount plus
accrued  and unpaid  interest to the date of  redemption.  In  addition,  upon a
Change of Control (as hereinafter defined),  GST Funding or GST USA, as the case
may be, will be required  to make an offer to  purchase  the Secured  Notes at a
purchase price equal to 101% of their  principal  amount plus accrued  interest.
For purposes of the Secured Notes Indenture, a "Change of Control" is defined to
mean such time as (i) a "person"  or "group"  (within  the  meaning of  Sections
13(d) and 14(d)(2) of the Exchange Act), becomes the ultimate "beneficial owner"
(as defined in Rule 13d-3 under the Exchange  Act) of voting stock  representing
more than 30% of the total  voting  power of the voting  stock of GST on a fully
diluted basis;  (ii)  individuals  who on May 13, 1997  constituted the Board of
Directors  (together  with any new  directors  whose  election  by the  Board of
Directors or whose nomination for election by GST's shareholders was approved by
a vote of at least  two-thirds of the members of the Board of Directors  then in
office who either  were  members of the Board of  Directors  on May 13,  1997 or
whose election or nomination for election was previously approved) cease for any
reason to constitute a majority of the members of the Board of Directors then in
office;  or  (iii)  all of the  common  stock of GST USA or GST  Funding  is not
beneficially owned by GST.

         The Secured Notes Indenture  contains certain covenants that affect and
in some cases  significantly  restrict  or  prohibit,  among other  things,  the
ability  of GST and its  restricted  subsidiaries  (including  GST USA) to incur
additional  indebtedness,  create liens, engage in sale-leaseback  transactions,
pay  dividends  or make  distributions  in respect of its  capital  stock,  make
investments  or  certain  other  restricted   payments,   sell  assets,   create
restrictions on the ability of restricted subsidiaries to make certain payments,
issue or sell stock of restricted  subsidiaries,  enter into  transactions  with
stockholders or affiliates and  consolidate,  merge or sell all or substantially
all of their assets.

ACCRUAL NOTES

         GST issued $144.0 million principal amount of Accrual Notes in November
and December 1997.  Until November 15, 2002 (the "Final Interest Accrual Date"),
interest on the Accrual Notes accrues and is  compounded  semi-annually  on each
May 15 and November 15, commencing May 15, 1998 but is not payable in cash. From
and after November 15, 2002, interest on the sum of the principal amount of each
Accrual  Note and the  accrued  and unpaid  interest  thereon  through the Final
Interest  Accrual  Date (the  "Final  Accumulated  Interest  Amount") is payable
semiannually (to holders of record at the close of business on May 1 or November
1 immediately  preceding the Interest Payment Date) on May 15 and November 15 of
each year, commencing May 15, 2003.

                                      -109-

<PAGE>
         The Accrual Notes are senior  subordinated,  unsecured  obligations  of
GST,  ranking  junior in right of payment to all senior  obligations  of GST and
pari passu with all senior subordinated obligations of GST.

         The Accrual Notes may be redeemed at any time on or after  November 15,
2002, in whole or in part, at 106.375% of the sum of their principal  amount and
Final Accumulated  Interest Amount, plus accrued interest thereon,  declining to
100% of the sum of their principal amount and Final Accumulated Interest Amount,
plus accrued interest thereon, on and after November 15, 2004. In addition,  the
Accrual Notes are redeemable under certain circumstances in the event of certain
changes affecting Canadian withholding taxes.

         The Accrual Notes Indenture  contains certain covenants that affect and
in some cases  significantly  restrict  or  prohibit,  among other  things,  the
ability  of GST and its  restricted  subsidiaries  (including  GST USA) to incur
additional  indebtedness,  create liens, pay dividends or make  distributions in
respect of its capital  stock,  make  investments  or certain  other  restricted
payments,  sell  assets,  create  restrictions  on  the  ability  of  restricted
subsidiaries  to make  certain  payments,  issue  or sell  stock  of  restricted
subsidiaries,  enter into  transactions  with  shareholders  or  affiliates  and
consolidate, merge or sell all or substantially all of their assets.

         Upon the  occurrence  of a Change of  Control,  GST will be required to
make an offer to purchase the Accrual Notes at a purchase price equal to 101% of
the sum of their principal  amount and the Accumulated  Interest Amount thereon,
plus accrued interest. For purposes of the Accrual Notes Indenture, a "Change of
Control" is defined to mean such time as (i) a "person"  or "group"  (within the
meaning of Sections 13(d) and 14(d)(2) of the Exchange Act, becomes the ultimate
"beneficial  owner" (as defined in Rule 13d-3 under the Exchange  Act) of voting
stock  representing  more than 30% of the total voting power of the voting stock
of GST on a fully  diluted  basis;  (ii)  individuals  who on November  19, 1997
constitute  the  Board  of  Directors  (together  with any new  directors  whose
election by the Board of  Directors  or whose  nomination  for election by GST's
shareholders  approved  by a vote of at least  two-thirds  of the members of the
Board of  Directors  then in  office  who  either  are  members  of the Board of
Directors on November 19, 1997 or whose  election or nomination for election was
previously  approved)  cease for any  reason to  constitute  a  majority  of the
members of the Board of  Directors  then in  office;  or (iii) all of the common
stock of GST USA is not beneficially owned by GST.

REDEEMABLE PREFERRED SHARES

         In a private  placement  in February  1997,  GST issued 500  Redeemable
Preferred Shares. The Redeemable Preferred Shares will not pay dividends, except
to the extent that cash dividends are paid on the Common Shares. The liquidation
and  redemption  prices of the  Redeemable  Preferred  Shares will  accrete at a
semi-annual rate of 11 7/8%.

         GST is required to redeem the Redeemable  Preferred  Shares on February
28, 2004 (the  "Mandatory  Redemption  Date") in cash at a  redemption  price of
approximately  $224,231 per share (the "Mandatory  Redemption Price");  provided
that to the extent GST is prohibited from paying such redemption  price in cash,
the  holders of  Redeemable  Preferred  Shares  have the option to convert  each
Redeemable Preferred Share into a number of Common Shares equal to the Mandatory
Redemption  Price divided by 95% of the then market price for Common Shares.  In
the event GST is  prevented  from  paying the  redemption  price for  Redeemable
Preferred Shares in cash and any holder of Redeemable  Preferred Shares does not
exercise such conversion  option,  GST has the option of extending the Mandatory
Redemption  Date to  August  28,  2007.  GST has the  option  of  redeeming  the
Redeemable  Preferred  Shares at any time after  February  28, 2000 in cash at a
redemption  price per Redeemable  Preferred  Share equal to the number of Common
Shares into which such Redeemable Preferred Share is then convertible multiplied
by the price at which such  Redeemable  Preferred  Share would become subject to
mandatory  conversion.  Under the terms of the Redeemable  Preferred Shares, the
holders  thereof are entitled to designate  for election one person to the Board
of Directors of the Company.  In June 1997,  Joseph G. Fogg III, designee of the
holders  of the  Redeemable  Preferred  Shares,  was  appointed  to the Board of
Directors of the Company.


                                      -110-

<PAGE>
         Redeemable  Preferred  Shares  are  convertible  at the  option  of the
holders into Common Shares at any time after February 28, 2000 or earlier upon a
change of control of the Company.  The holders of  Redeemable  Preferred  Shares
have the right to require the Company to  repurchase  their shares upon a change
of control of the Company after February 28, 2002;  prior to that time,  holders
have a right to convert  their  Redeemable  Preferred  Shares into Common Shares
upon a change of control.  Further,  the Redeemable Preferred Shares are subject
to mandatory  conversion into Common Shares if the market price of Common Shares
exceeds $15.925 per share (subject to adjustment)  for a specified  period after
February 28, 2000.

             CERTAIN UNITED STATES FEDERAL INCOME TAX CONSIDERATIONS

         The following is a summary of the material United States federal income
tax  consequences  of the purchase,  ownership and  disposition  of the Notes by
initial  investors who acquire the Notes at original issue for cash in an amount
equal to the original issue price.  This summary is based on current  provisions
of the Code,  applicable  final,  temporary  and proposed  Treasury  Regulations
("Treasury Regulations"), judicial authority, and current administrative rulings
and  pronouncements  of the Service and upon the facts concerning the Company as
of the date hereof.  There can be no assurance  that the Service will not take a
contrary  view, and no ruling from the Service has been or will be sought by the
Company. Legislative, judicial, or administrative changes or interpretations may
be forthcoming  that could alter or modify the statements  and  conclusions  set
forth herein. Any such changes or interpretations  may or may not be retroactive
and could affect the tax consequences to holders.

         This summary does not purport to deal with all aspects of taxation that
may be relevant to  particular  holders of the Notes in light of their  personal
investment or tax  circumstances,  or to certain  types of investors  (including
insurance  companies,  financial  institutions,   broker-dealers  or  tax-exempt
organizations)  subject to special  treatment  under the United  States  federal
income tax laws. This discussion does not deal with special tax situations, such
as the  holding of the Notes as part of a straddle  with other  investments,  or
situations in which the functional currency of a holder who is a U.S. Holder (as
defined below) is not the United States  dollar.  In addition,  this  discussion
deals only with Notes held as capital  assets within the meaning of Section 1221
of the Code.

         As used in the discussion which follows,  the term "U.S.  Holder" means
an initial  beneficial  owner of the Notes that for United States federal income
tax  purposes  is (i) a  citizen  or  resident  of  the  United  States,  (ii) a
corporation,  partnership  or other entity  created or organized in or under the
laws of the United  States or of any  political  subdivision  thereof,  (iii) an
estate the income of which is subject to United States federal  income  taxation
regardless of its source, or (iv) a trust the administration of which is subject
to primary  supervision of a court within the United States and for which one or
more U.S. persons have the authority to control all substantial  decisions.  The
term "Non-U.S.  Holder" means an initial  beneficial owner of Notes that is, for
United States federal income tax purposes, not a U.S. Holder.

HOLDERS  SHOULD  CONSULT  THEIR  OWN  TAX  ADVISORS  AS TO  THE  PARTICULAR  TAX
CONSEQUENCES  TO  THEM  OF  PURCHASING,  HOLDING  AND  DISPOSING  OF THE  NOTES,
INCLUDING THE APPLICABILITY AND EFFECT OF ANY STATE, LOCAL OR FOREIGN TAX LAWS.

GENERAL

         Under   applicable   authorities,   the  Notes  should  be  treated  as
indebtedness  for United States  federal  income tax  purposes.  In the unlikely
event the Notes are treated as equity,  the amount of any actual or constructive
distributions  on any such Note would first be taxable to the holder as dividend
income to the  extent of the  issuer's  current  and  accumulated  earnings  and
profits,  and next  would be treated as a return of capital to the extent of the
holder's tax basis in the Note,  with any remaining  amount treated as gain from
the sale of a Note. As a result,  until such time as the issuer has earnings and
profits  as  determined   for  United  States   federal   income  tax  purposes,
distributions  on any Note  treated  as equity  will be a  nontaxable  return of
capital  and will be  applied  against  and in the case of actual  distributions
reduce the  adjusted  tax basis of such Note in the hands of its holder (but not
below

                                      -111-

<PAGE>
zero).  Further,  payments on the Notes  treated as equity to  Non-U.S.  Holders
would not be eligible for the portfolio  interest  exception  from United States
withholding  tax,  and  dividends  thereon  would be  subject  to United  States
withholding tax at a flat rate of 30% (or lower applicable treaty rate) and gain
from their  sale or other  taxable  disposition  might also be subject to United
States tax. In addition,  in the event of equity treatment,  neither GST Network
nor GST USA, as the case may be,  would ever be  entitled to deduct  interest on
the Notes for United States federal  income tax purposes.  The remainder of this
discussion  assumes that the Notes will  constitute  indebtedness  of either GST
Network or GST USA, as appropriate, for such tax purposes.

TAX CONSEQUENCES TO U.S. HOLDERS

         ORIGINAL  ISSUE  DISCOUNT.  The excess of a Note's  "stated  redemption
price at maturity"  over its "issue price" will  generally  constitute  original
issue discount ("OID") for United States federal income tax purposes. The stated
redemption  price at maturity of a Note will equal the sum of all cash  payments
due in respect of the Notes, whether denominated as principal or interest, other
than  payments of "qualified  stated  interest",  which is defined  generally as
stated  interest that is  unconditionally  payable in cash or in property (other
than the debt  instruments  of the issuer) at least  annually at a single  fixed
rate that  appropriately  takes into  account  the length of  intervals  between
payments.  The issue  price of a Note is equal to the first  price to the public
(not including bond houses,  brokers, or similar persons or organizations acting
in the capacity of underwriters,  placement  agents,  or wholesalers) at which a
substantial  amount of the Notes is sold for money  even if part of the issue is
subsequently  sold at a different  price.  Because  interest on the Notes is not
payable  until  2003,  the stated  interest  on the Notes will not be treated as
qualified  stated interest but will be added to the stated  redemption  price at
maturity  of the Notes.  As a result,  the Notes will be treated as having  been
issued  with  original  issue  discount  equal to the  excess  of  their  stated
redemption  price at maturity  (payments of stated  interest and principal) over
their issue price. Regardless of their method of accounting, U.S. Holders of the
Notes  will be  required  to  include  an amount  equal to the sum of the "daily
portions" of such OID  attributable to each day during the taxable year on which
the U.S.  Holder holds the Note in income for federal  income tax purposes as it
accrues,  in accordance  with a constant  yield method based on a compounding of
interest, before the receipt of cash payments attributable to such income. Under
this method,  U.S. Holders of the Notes generally will be required to include in
income increasingly greater amounts of OID in successive accrual periods.

         The  Company  does not intend to treat the  possibility  of an optional
redemption  or  repurchase  of the Notes,  or of  additional  interest  becoming
payable due to the  Company's  failure to  consummate  the Exchange  Offer or to
cause resales of the Notes to be registered  under the Securities Act, as giving
rise to any additional  accrual of OID or  recognition  of ordinary  income upon
redemption, sale or exchange of a Note. Failure of the Company to consummate the
Exchange  Offer  or  to  file  or  cause  to be  declared  effective  the  Shelf
Registration  Statement as described under  "Description of  Notes--Registration
Rights"  will  cause  additional  interest  to accrue on the Notes in the manner
described therein.  In the unlikely event that the interest rate on the Notes is
increased,  then such increased interest may be treated as increasing the amount
of OID on the Notes,  which would be  includable  by a U.S.  Holder in income as
such OID accrues, in advance of receipt of any cash payment thereof.

         APPLICABLE  HIGH  YIELD  DISCOUNT   OBLIGATIONS.   The  Notes  will  be
"applicable high yield discount obligations" ("AHYDOs"), as defined in the Code,
if the yield to maturity of such Notes exceeds the "applicable  federal rate" in
effect at the time of their  issuance (the "AFR") plus five  percentage  points.
The  appropriate AFR depends on the weighted  average  maturity of the Notes. If
the Notes are AHYDOs, a portion of the OID that accrues on the Notes will not be
deductible  by the Company at any time.  The  non-deductible  portion of the OID
will be an amount that bears the same ratio to such OID as (i) the excess of the
yield to maturity of the Notes over the AFR plus six percentage  points bears to
(ii) the yield to maturity of the Notes.  To the extent that the  non-deductible
portion of OID would have been treated as a dividend if it had been  distributed
with respect to the Company's stock, it will be treated as a dividend to holders
of the Notes  for  purposes  of the rules  relating  to the  dividends  received
deduction  for  corporate  holders.  Any  remaining OID on the Notes will not be
deductible by the Company until such OID is paid.

                                      -112-

<PAGE>
         SALE OR OTHER  DISPOSITION.  In  general,  a U.S.  Holder of Notes will
recognize  gain or loss upon the sale,  exchange,  redemption,  or other taxable
disposition of such Notes  measured by the difference  between (i) the amount of
cash and the fair market value of property  received and (ii) the U.S.  Holder's
adjusted  tax basis in the Notes.  In general,  the adjusted tax basis of a Note
will  equal  the  purchase  price  of the  Note,  increased  by  amounts  of OID
previously  included in income by the U.S.  Holder,  and  decreased  by payments
received by the U.S.  Holder in respect of the Note.  Any such gain or loss will
generally be capital gain or loss,  provided the Notes have been held as capital
assets. U.S. Holders taxed as individuals will be subject to U.S. federal income
tax in respect of capital  gains at varying  rates  depending  upon the  holding
period. The distinction between capital gain or loss and ordinary income or loss
is also  relevant  for  purposes  of,  among other  things,  limitations  on the
deductibility of capital losses.

         An exchange of Notes  pursuant to the Exchange Offer and the assumption
of the Notes by GST USA should not be considered taxable events.

TAX CONSEQUENCES TO NON-U.S. HOLDERS

         A Non-U.S.  Holder  will  generally  not be  subject  to United  States
federal income tax and/or United States federal withholding tax on interest paid
on the  Notes,  provided  that (i) the  Non-U.S.  Holder  does not  actually  or
constructively own 10% or more of the total combined voting power of all classes
of the voting stock of either GST Network or GST USA,  (ii) the Non-U.S.  Holder
is not a bank, or a controlled foreign corporation that is related to either GST
Network or GST USA (actually or constructively)  through stock ownership,  (iii)
such  interest  is not  effectively  connected  with a  United  States  trade or
business and (iv) either (a) the beneficial  owner of the Notes certifies to the
Issuer  (GST  Network  or GST  USA,  as the  case  may be) or its  agent,  under
penalties of perjury,  that it is not a U.S. Holder and provides a completed IRS
Form W-8 or  substantially  similar  substitute  form  ("Certificate  of Foreign
Status") or (b) a  securities  clearing  organization,  bank or other  financial
institution  which holds  customers'  securities  in the ordinary  course of its
trade or business (a "financial  institution") and holds the Notes, certifies to
the Issuer or its agent,  under  penalties  of perjury,  that it has  received a
Certificate of Foreign Status from the beneficial  owner or that it has received
from another financial institution a Certificate of Foreign Status and furnishes
the payor with a copy thereof.  A Non-U.S.  Holder must inform GST Network,  GST
USA or any agent  thereof  of any  change  in the  information  provided  on the
Certificate of Foreign Status within 30 days of the change. A Non-U.S. Holder of
a Note who does not meet these  certification  requirements  generally  would be
subject to U.S. federal withholding at a flat rate of 30% (or a lower applicable
treaty rate) on payments of interest on the Notes.

         If a Non-U.S. Holder of a Note is engaged in a trade or business in the
United States and interest on the Note is effectively connected with the conduct
of such trade or  business,  and,  if a tax treaty  applies,  such  interest  is
attributable to a U.S. permanent  establishment  maintained by such holder, such
Non-U.S. Holder, although exempt from U.S. federal withholding tax (provided the
Non-U.S.  Holder  delivers  a  properly  completed  IRS Form 4224 or  applicable
successor form),  will be subject to U.S. federal income tax on such interest in
essentially  the same manner as a U.S.  Holder.  In addition,  if such  Non-U.S.
Holder is a foreign corporation, it may also be subject to a U.S. foreign branch
profits  tax equal to 30% of its  effectively  connected  earnings  and  profits
(subject to adjustment)  for that taxable year,  unless reduced or eliminated by
an applicable income tax treaty.

         Subject  to the  discussion  of backup  withholding  below,  a Non-U.S.
Holder  generally will not be subject to United States federal income tax on any
gain  realized  in  connection  with the  sale,  exchange,  redemption  or other
disposition of Notes, unless (i) the gain is effectively  connected with a trade
or  business  carried on by the  Non-U.S.  Holder  within the United  States (as
evidenced by the delivery of a properly  completed  IRS Form 4224 or  applicable
successor form) and, if a treaty applies, the gain is generally  attributable to
the United States permanent establishment  maintained by the Non-U.S. Holder, or
(ii) the Non-U.S.  Holder is an  individual  who is present in the United States
for 183  days or more in the  taxable  year of  disposition  and  certain  other
conditions are satisfied.

                                      -113-

<PAGE>
         Notes held by an individual  who is neither a citizen nor a resident of
the United  States for U.S.  federal  estate  tax  purposes  at the time of such
individual's death will not be subject to U.S. federal estate tax, provided that
the income from the Notes was not or would not have been  effectively  connected
with a U.S.  trade or  business  of such  individual  and that  such  individual
qualified for the exemption from U.S. federal withholding tax (without regard to
the certification requirements) that is described above.

         Non-U.S.  Holders should consult with their tax advisers regarding U.S.
and foreign tax consequences with respect to the Notes.

EARNING STRIPPING RULES

         Under  Section  163(j)  of  the  Code,  no  deduction  is  allowed  for
"disqualified  interest" paid or accrued by a corporation  during a taxable year
if (i) such  corporation has "excess  interest  expense" (as defined by the Code
generally to mean the excess,  if any, of the corporation's net interest expense
over 50% of the "adjusted  taxable income" of the  corporation)  for the taxable
year, and (ii) the ratio of debt to equity of such corporation exceeds 1.5 to 1.
"Disqualified  interest"  includes any interest paid or accrued by a corporation
with respect to debt that is guaranteed  by a foreign  person that is related to
such  corporation to the extent that no gross basis United States tax is imposed
with respect to such  interest.  GST USA expects that Section 163(j) of the Code
may apply to limit the  deductibility of interest by GST USA with respect to the
Notes.

BACKUP WITHHOLDING AND INFORMATION REPORTING

         "Backup" withholding and information  reporting  requirements may apply
to certain  payments of principal and interest on a Note and to certain payments
of proceeds of the sale or retirement of a Note. GST Network,  GST USA, GST, any
agent thereof,  a broker,  the Trustee or any paying agent,  as the case may be,
will be  required to  withhold  tax from any  payment  that is subject to backup
withholding  at a rate of 31% of such payment if a U.S.  Holder fails to furnish
his  taxpayer   identification   number  (social  security  number  or  employer
identification  number),  to  certify  that such U.S.  Holder is not  subject to
backup withholding,  or to otherwise comply with the applicable  requirements of
the backup withholding rules. Certain U.S. Holders are not subject to the backup
withholding and reporting requirements.

         Under current Treasury Regulations,  backup withholding and information
reporting will not apply to payments made by GST Network,  GST USA or GST or any
agent  thereof (in its  capacity as such) to a Holder of a Note who has provided
the  required  certification  under  penalties  of perjury that it is not a U.S.
Holder  as  set  forth  in  clause  (iv)  in  the  first  paragraph  under  "Tax
Consequences  to Non-U.S.  Holders" or has  otherwise  established  an exemption
(provided that neither the company nor such agent has actual  knowledge that the
Holder is a U.S. Holder or that the conditions of any other exemption are not in
fact satisfied).

         Payment of the  proceeds  from the sale by a non-U.S.  Holder of a Note
made to or  through a foreign  office of a broker  will not be  subject  to U.S.
information reporting or backup withholding, except that if the broker is a U.S.
person, a controlled foreign corporation for U.S. federal income tax purposes, a
foreign person 50% or more of whose gross income is effectively connected with a
United States trade or business for a specified  three-year  period, or, (in the
case of payments made after December 31, 1999 a foreign partnership with certain
connections to the United States),  U.S. information  reporting,  but not backup
withholding,  may apply to such payments. Payments of the proceeds from the sale
of a Note to or through the United  States office of a broker is subject to U.S.
information  reporting and backup  withholding unless the Holder certifies as to
its non-U.S.  status or otherwise establishes an exemption from U.S. information
reporting and backup withholding.

         Any amounts withheld under the backup  withholding rules from a payment
to a Holder may be claimed as a credit against such Holder's U.S. federal income
tax  liability,  provided  that the  required  information  is  provided  to the
Service.


                                      -114-

<PAGE>
         THE  FOREGOING  SUMMARY  DOES NOT DISCUSS ALL ASPECTS OF UNITED  STATES
FEDERAL INCOME TAXATION THAT MAY BE RELEVANT TO A PARTICULAR  HOLDER OF NOTES IN
LIGHT OF ITS PARTICULAR  CIRCUMSTANCES AND INCOME TAX SITUATION.  HOLDERS SHOULD
CONSULT THEIR OWN TAX ADVISOR AS TO THE SPECIFIC TAX  CONSEQUENCES  TO THEM FROM
THE PURCHASE,  OWNERSHIP AND DISPOSITION OF NOTES, INCLUDING THE APPLICATION AND
EFFECT OF STATE,  LOCAL,  FOREIGN AND OTHER TAX LAWS AND THE POSSIBLE EFFECTS OF
CHANGES IN UNITED STATES OR OTHER TAX LAWS.

                       CERTAIN CANADIAN TAX CONSIDERATIONS

         In the opinion of Thorsteinssons,  Canadian tax counsel to GST, GST USA
and GST Network,  the following is a general  summary of the principal  Canadian
federal income tax  consequences  to investors who acquire New Notes pursuant to
the terms of this Exchange Offer.

         This summary is based upon the current provisions of the INCOME TAX ACT
(CANADA)  (the  "Act")  as in  force  from  the  date  hereof,  the  regulations
thereunder,  any proposals to amend the Act or the Regulations  announced by the
date hereof by the federal  Minister of Finance and counsel's  understanding  of
the current  administrative and assessing policies of Revenue Canada,  Taxation.
This   description  is  not  exhaustive  of  all  Canadian  federal  income  tax
consequences  and does not anticipate any changes in law whether by legislative,
governmental  or  judicial  action  other  than  the  passing  of  the  proposed
amendments in their present form,  nor does it take into account  provincial tax
considerations that may differ significantly from those discussed herein.

         THIS SUMMARY IS OF A GENERAL  NATURE ONLY AND IS NOT INTENDED TO BE NOR
SHOULD IT BE CONSTRUED TO BE LEGAL OR TAX ADVICE TO ANY  INVESTOR.  ACCORDINGLY,
INVESTORS  SHOULD  CONSULT THEIR OWN TAX ADVISORS FOR ADVICE WITH RESPECT TO THE
CANADIAN INCOME TAX  CONSEQUENCES  ASSOCIATED WITH THEIR  PARTICIPATION  IN THIS
OFFERING.

         The New Notes will be issued by GST Network in  exchange  for Old Notes
having substantially  identical terms. On May 1, 2003, the date by which the New
Notes will  accrete to their full  principal  amount at  maturity,  they will be
unconditionally  and  irrevocably  assumed  by GST  USA and  guaranteed  by GST.
Neither GST nor GST USA will be liable on the New Notes until they are  assumed.
From and after May 1, 2003,  each New Note will bear interest,  payable in cash,
at the rate specified in this Prospectus, payable on each May 1 and November 1.

A.       NON-RESIDENT NOTE HOLDERS

         This  summary  specifically  does  not  apply to an  investor  who is a
non-resident  of Canada  who holds the New Notes in the  course of  carrying  on
business in Canada.

         No  Canadian  income  tax  will  be  payable  by an  investor  who is a
non-resident  of Canada who  exchanges  Old Notes for New Notes  pursuant to the
Exchange Offer.

         Provided  that GST USA  honors  all of its  obligations  in  respect of
principal  and  interest  payments  due under the New Notes and GST USA does not
carry on its business  principally in Canada,  no Canadian taxes will be payable
in respect of such  payments made by GST USA to holders of New Notes who are not
residents of Canada for purposes of the Act. If, as a result of a default by GST
USA, GST, as guarantor, makes payments under the New Notes, GST will be required
to  withhold  and remit,  on behalf of the  holders of such New Notes,  Canadian
withholding  tax at a rate of 25% of any amounts paid on account,  in lieu of or
in  satisfaction  of interest.  In such  circumstances,  withholding tax will be
payable in respect of both the interest  that has accrued  after May 1, 2003 and
also the OID.


                                      -115-

<PAGE>
         The rate of  withholding  tax to be  withheld  and  remitted  by GST on
behalf of the  holders of New Notes may be reduced  from 25% to some lesser rate
in accordance with the provisions of any applicable tax treaty.

B.       CANADIAN RESIDENT NOTE HOLDERS

         This  summary  specifically  does  not  apply  to a  Canadian  resident
investor that is a "financial  institution" as defined in subsection 142.2(1) of
the Act.

(I)  DISPOSITION OF OLD NOTES

         A Canadian resident holder of Old Notes who exchanges Old Notes for New
Notes  under  the  terms of the  Exchange  Offer  and who holds the Old Notes as
capital  property will be deemed to have proceeds of the  disposition of the Old
Notes and a cost  (measured  in Canadian  dollars) of the New Notes equal to the
adjusted cost base (measured in Canadian  dollars) of the Old Notes  immediately
before the  exchange.  As a result,  no gain or loss will arise on the exchange.
Some uncertainty attaches to this result as there is no determinative  published
administrative  practice or jurisprudence  relating to the exchange of accreting
discount debts.  If the exchange is not tax deferred,  the investor will realize
income  and/or  losses on the Old Notes  similar  to those  described  under the
heading "Disposition of the New Notes," below and the cost of a New Note will be
the Canadian dollar value of an Old Note at the time of the exchange.

(II)  INTEREST INCOME

         A  Canadian  resident  holder  of  New  Notes  who  is  a  corporation,
partnership,  unit trust or trust of which a  corporation  or  partnership  is a
beneficiary  is required to include in income for each  taxation year the amount
of interest  accrued,  deemed to accrue or paid on the New Note in that year, to
the extent such  interest  was not  included in income for a preceding  taxation
year. For these purposes,  interest will be considered to accrue at a rate of 10
1/2% compounded annually with such accrual including the period in which the Old
Notes  were  held by the  investor.  For  taxation  years in which an  amount of
interest  not  previously  included  in  income is paid on the New  Notes,  such
holders must include in income the amount of interest paid in the taxation year.

         A Canadian resident holder of New Notes who is an individual or a trust
(other  than one  referred  to above)  that holds New Notes the day before  each
anniversary  of the New Notes'  issue is required to include in income each year
interest  that  accrues  or is deemed to accrue on the New Notes to that date to
the extent such interest was not otherwise  included in income for the year or a
preceding year. For these  purposes,  interest will be considered to accrue at a
rate of 10 1/2%  compounded  annually with such accrual  including the period in
which the Old Notes were held by the  investor.  For taxation  years in which an
amount of interest not  previously  included in income is paid on the New Notes,
such holders must include in income the amount of interest  paid in the taxation
year.

         Any bonus or premium  payable on New Notes held by  Canadian  residents
will be  deemed  to be  interest  and will be  required  to be  included  in the
holder's income.

(III)  INCOME DENOMINATED IN U.S. CURRENCY

         The  amount of  interest  accrued or paid on a New Note that a Canadian
resident  holder is required to include in income  will be the  Canadian  dollar
equivalent of such interest at the time of accrual or payment.  The terms of the
New Notes require interest to be accrued and paid in U.S. currency. As a result,
a Canadian  resident  holder of New Notes whose  income  inclusion in respect of
accrued  interest  does not  coincide  with the  stipulated  payment  dates  for
interest,  may have a foreign  exchange gain or loss when interest is paid.  Any
such gain or loss will be included  in the  holder's  income on income  account.
Revenue Canada's administrative policy is to accept any method used to determine
foreign exchange gains or losses on income transactions provided:

         (a) the method is in  accordance  with  generally  accepted  accounting
principles;

                                      -116-

<PAGE>
         (b) the same method is used for financial statement purposes and income
tax purposes; and,

         (c)      no reserve  is  claimed  in  respect  of known or  anticipated
                  foreign  exchange  gains or losses  that have  occurred or may
                  occur after the end of a taxation year.

(IV)  DISPOSITION OF THE NEW NOTES

         A Canadian  resident  holder of New Notes who assigns or transfers  the
New  Notes or whose  New  Notes are  redeemed  or  purchased  by GST USA will be
required to include in income for the year in which the  disposition  occurs the
amount of interest  accrued  (including  increases in Accreted Value) on the New
Notes  to the  date of  disposition,  to the  extent  such  amount  has not been
included in income for the year or a  preceding  year.  Amounts  received on the
disposition in respect of interest that has  previously  been included in income
will not be taxable  (except that  foreign  exchange  gains/losses  may arise as
described  above).  Where a Canadian  resident  holder of a New Note disposes of
such New Note for proceeds equal to its fair market value and at the time of the
disposition  the total  amount of interest  previously  included in the holder's
income in respect of the New Note exceeds the amount that was received or became
receivable  by the holder at or prior to that time in respect of such  interest,
the  holder is  entitled  to deduct  from  income an amount  equal to the excess
interest that was  previously  included in income and not received by the holder
or recouped by him on the disposition of the New Note.

         In addition,  a Canadian resident holder of New Notes who holds them as
capital property may realize a capital gain (or capital loss) on the disposition
of the New Notes  equal to the amount by which the  proceeds of  disposition  of
such New Notes,  excluding  payments in respect of interest that has  previously
been  included in income,  net of any cost of  disposition,  exceeds (or is less
than)  the  adjusted  cost  base of the New  Notes  to that  holder.  Generally,
three-quarters  of any capital gain realized on a  disposition  of the New Notes
must be included in computing  income for that year as a taxable  capital  gain.
Three-quarters of any capital loss realized by a Canadian holder of New Notes on
a  disposition  of such New Notes in a year may be  deducted  from the  holder's
taxable capital gains for that year.

         Any gain or loss to a Canadian resident who does not hold the New Notes
as capital  property  will be on income  account  and will be fully  included or
deducted from income, as the case may be.

         The proceeds of disposition of New Notes to a Canadian  resident holder
thereof  will  be the  Canadian  dollar  equivalent  of the US  dollar  proceeds
received as such amounts are  determined  at the time of the Notes'  acquisition
and disposition.

                              PLAN OF DISTRIBUTION

         Except as described below,  (i) a broker-dealer  may not participate in
the Exchange Offer in connection with a distribution of the New Notes, (ii) such
broker-dealer   would  be  deemed  an  underwriter   in  connection   with  such
distribution and (iii) such  broker-dealer  would be required to comply with the
registration  and  prospectus  delivery  requirements  of the  Securities Act in
connection with any secondary resale transactions. A broker-dealer may, however,
receive New Notes for its own account pursuant to the Exchange Offer in exchange
for Old Notes when such Old Notes  were  acquired  as a result of  market-making
activities or other trading activities. Each such broker-dealer must acknowledge
that it will  deliver a  prospectus  in  connection  with any resale of such New
Notes. This Prospectus,  as it may be amended or supplemented from time to time,
may be used by a  broker-dealer  (other than an  "affiliate"  of the Company) in
connection  with  resales of such New Notes.  GST  Network has agreed that for a
period of 180 days after the Expiration Date, it will make this  Prospectus,  as
amended  or  supplemented,  available  to  any  such  broker-dealer  for  use in
connection with any such resale.

         GST Network will not receive any proceeds from any sale of New Notes by
broker-dealers.  New Notes  received  by  broker-dealers  for their own  account
pursuant to the Exchange Offer may be sold from time to time

                                      -117-

<PAGE>
in one or  more  transactions  in the  over-the-counter  market,  in  negotiated
transactions,  through the writing of options on the New Notes or a  combination
of such methods of resale, at market prices prevailing at the time of resale, at
prices related to such prevailing market prices or negotiated  prices.  Any such
resale may be made directly to  purchasers  or to or through  brokers or dealers
who may receive  compensation in the form of commissions or concessions from any
such   broker-dealer   and/or  the  purchasers  of  any  such  New  Notes.   Any
broker-dealer  that  resells  New  Notes  that were  received  by it for its own
account  pursuant  to the  Exchange  Offer may be deemed to be an  "underwriter"
within the  meaning of the  Securities  Act and any profit on any such resale of
New Notes and any commissions or concessions received by any such persons may be
deemed to be underwriting  compensation  under the Securities Act. The Letter of
Transmittal  states that by acknowledging that it will deliver and by delivering
a  prospectus,  a  broker-dealer  will  not be  deemed  to  admit  that it is an
"underwriter" within the meaning of the Securities Act.

         For a period of 180 days after the  Expiration  Date,  GST Network will
promptly  send  additional  copies  of  this  Prospectus  and any  amendment  or
supplement to this Prospectus to any broker-dealer  that requests such documents
in a Letter of Transmittal.  GST Network has agreed to pay all expenses incident
to the Exchange  Offer other than  commissions  or concessions of any brokers or
dealers  and  transfer  taxes and will  indemnify  the  Holders of the Old Notes
(including  any   broker-dealers)   against   certain   liabilities,   including
liabilities under the Securities Act.

         The Placement  Agents have indicated to GST Network that they intend to
effect  offers  and  sales of the New  Notes in  market-making  transactions  at
negotiated  prices related to prevailing  market prices at the time of sale, but
is not obligated to do so and such market-making  activities may be discontinued
at any  time.  The  Placement  Agents  may act as  principal  or  agent  in such
transactions.  There can be no assurance that an active market for the New Notes
will develop.


                                  LEGAL MATTERS

         Certain  legal  matters in  connection  with the Notes are being passed
upon for the Company by Olshan  Grundman  Frome & Rosenzweig  LLP, New York, New
York,  counsel  to the  Company.  Stephen  Irwin,  Esq.  is of counsel to Olshan
Grundman  Frome & Rosenzweig  LLP.  Mr.  Irwin,  Vice  Chairman of the Board and
Secretary of the Company and Senior Vice  President and Secretary of each of GST
USA and GST  Network,  owns 76,345  Common  Shares,  and options and warrants to
purchase 600,000 Common Shares. In addition,  other attorneys at Olshan Grundman
Frome & Rosenzweig  LLP hold Common  Shares  and/or  options to purchase  Common
Shares.  Certain Canadian legal matters are being passed upon for the Company by
McCarthy Tetrault, Vancouver, British Columbia. Certain Canadian tax matters are
being  passed  upon  for  the  Company  by  Thorsteinssons,  Vancouver,  British
Columbia.

                                     EXPERTS

         The consolidated balance sheets of GST Telecommunications, Inc. and its
subsidiaries  as of December  31, 1997 and  September  30, 1997 and 1996 and the
consolidated  statements of operations,  shareholders' equity (deficit) and cash
flows for the three month period  ended  December 31, 1997 and each of the years
in the three-year period ended September 30, 1997, have been incorporated herein
by reference in reliance  upon the report of KPMG Peat Marwick LLP,  independent
certified public  accountants.  The consolidated  balance sheet of GST USA, Inc.
and its subsidiaries as of December 31, 1997 and September 30, 1997 and 1996 and
the consolidated  statements of operations,  shareholder's  equity (deficit) and
cash flows for the three month  period  ended  December 31, 1997 and each of the
years in the three-year  period ended September 30, 1997, have been incorporated
herein by  reference  in  reliance  upon the  report of KPMG Peat  Marwick  LLP,
independent  certified  public  accountants.  The  balance  sheet of GST Network
Funding, Inc. as of April 16, 1998 has been included herein in reliance upon the
report of KPMG Peat Marwick LLP, independent certified public accountants.

                                      -118-

<PAGE>
                          INDEX TO FINANCIAL STATEMENTS

<TABLE>
<CAPTION>


                                                                                                            Page(s)

GST NETWORK FUNDING, INC.

<S>                                                                                                             <C>
Independent Auditors' Report....................................................................................F-2
Balance Sheets at April 16, 1998 (date of inception) and May 31, 1998 (unaudited)...............................F-3
Statement of Operation for the period from April 16, 1998 (date of inception) to May 31, 1998 (unaudited).......F-4
Statement of Shareholder's Equity for the period from April 16, 1998 (date of inception) to
  May 31, 1998 (unaudited)......................................................................................F-5
Statement of Cash Flows for the period from April 16, 1998 (date of inception) to May 31, 1998 (unaudited)......F-6
Notes to Financial Statements...................................................................................F-7
</TABLE>



                                       F-1

<PAGE>


                          INDEPENDENT AUDITORS' REPORT



The Board of Directors and Shareholder
GST Network Funding, Inc.:


We have audited the accompanying  balance sheet of GST Network Funding,  Inc. as
of April 16, 1998.  This balance  sheet is the  responsibility  of the Company's
management.  Our  responsibility  is to express an opinion on this balance sheet
based on our audit.

We conducted our audit in accordance with generally accepted auditing standards.
Those standards  require that we plan and perform the audit to obtain reasonable
assurance about whether the balance sheet is free of material  misstatement.  An
audit includes  examining,  on test basis,  evidence  supporting the amounts and
disclosures  in  the  balance  sheet.  An  audit  also  includes  assessing  the
accounting principles used and significant estimates made by management, as well
as evaluating the overall balance sheet presentation.  We believe that our audit
provides a reasonable basis for our opinion.

In our opinion,  the balance sheet  referred to above  presents  fairly,  in all
material  respects,  the financial  position of GST Network Funding,  Inc. as of
April 16, 1998, in conformity with generally accepted accounting principles.



/S/ KPMG PEAT MARWICK LLP




Portland, Oregon
April 16, 1998


                                       F-2
<PAGE>
                            GST NETWORK FUNDING, INC.

                                 Balance Sheets

                                 (In thousands)
<TABLE>
<CAPTION>

                                                                    APRIL 16,   MAY 31,
                       ASSETS                                         1998       1998
                                                                  ---------   -----------
                                                                              (UNAUDITED)

Current assets:
<S>                                                                <C>         <C>
     Cash                                                          $      1        --
                                                                   --------    --------

                  Total current assets                                    1       --

Restricted investments                                                 --      292,570
Commitment fee receivable from parent                                  --        1,688
Deferred financing costs, net                                          --       10,915
                                                                   --------    --------

                                                                   $      1    305,173
                                                                   ========    ========

                      LIABILITIES AND SHAREHOLDER'S EQUITY

Current liabilities:
     Accrued liabilities                                           $   --          525
     Accrued income taxes payable to parent                            --          939
     Other payable to parent                                           --           75
                                                                   -------    --------

                  Total current liabilities                            --        1,539
                                                                   -------    --------

Long-term debt                                                         --      302,282

Shareholder's equity:
     Common stock, $.01 par value; authorized
        1,000 shares; 100 shares issued and outstanding                --         --
     Additional paid-in capital in excess of par value                    1      2,000
     Accumulated deficit                                               --         (648)
                                                                   --------    --------

                  Total shareholder's equity                              1      1,352
                                                                   --------    --------

                                                                   $      1    305,173
                                                                   ========    ========
</TABLE>


See accompanying notes to financial statements.


                                       F-3
<PAGE>
                            GST NETWORK FUNDING, INC.

                             Statement of Operations

             For the period from April 16, 1998 (date of inception)
                           to May 31, 1998 (unaudited)

                                 (In thousands)



Revenues:
     Interest income                            $ 1,075
     Commitment fee income                        1,688
                                                -------

             Total revenues                       2,763

Operating expenses:
     Interest expense                             2,472
                                               --------

             Income before income taxes             291

Income tax expense:
     Current                                        939
     Deferred                                        --
                                              ---------

                  Net loss                    $    (648)
                                              ==========


See accompanying notes to financial statements.


                                       F-4

<PAGE>
                            GST NETWORK FUNDING, INC.

                        Statement of Shareholder's Equity

             For the period from April 16, 1998 (date of inception)
                           to May 31, 1998 (unaudited)

                      (In thousands, except share amounts)

<TABLE>
<CAPTION>

                                          COMMON SHARES             ADDITIONAL                         TOTAL
                                 --------------------------------    PAID-IN        ACCUMULATED     SHAREHOLDER'S
                                     SHARES            AMOUNT        CAPITAL          DEFICIT         EQUITY
                                 -------------    ---------------  -------------    ------------    --------------

<S>                                     <C>         <C>              <C>              <C>             <C>  
Balance at April 16, 1998
     (date of inception)                100         $    --              1              --                1

Capital investment by
     parent (unaudited)                  --              --          1,999              --            1,999
Net loss (unaudited)                     --              --             --            (648)            (648)
                                 -------------      ---------      -------------    ------------   -------------

Balance at May 31, 1998
     (unaudited)                        100         $    --          2,000            (648)           1,352
                                 =============      =========      =============    ============   =============
</TABLE>

See accompanying notes to financial statements.



                                       F-5

<PAGE>
                            GST NETWORK FUNDING, INC.

                             Statement of Cash Flows

             For the period from April 16, 1998 (date of inception)
                           to May 31, 1998 (unaudited)

                                 (In thousands)

Operations:
     Net loss                                                   $    (648)
     Items not involving cash:
        Amortization of deferred financing costs                      185
        Accretion of interest                                       2,287
        Changes in non-cash working capital:
           Commitment fee receivable from parent                   (1,688)
           Accrued liabilities                                        525
           Accrued income taxes payable to parent                     939
           Other payable to parent                                     75
                                                                 ----------

                     Cash provided by operations                    1,675
                                                                 ----------

Investing:
     Change in investments restricted for fixed
        asset purchases                                          (292,570)
                                                                 ----------

                     Cash used in investing                      (292,570)
                                                                 ----------

Financing:
     Proceeds from issuance of long-term debt                     299,995
     Deferred financing costs                                     (11,100)
     Proceeds from investment by parent                             1,999
                                                                 ----------

                     Cash provided by financing                   290,894
                                                                 ----------

                     Decrease in cash and cash equivalents             (1)

Cash and cash equivalents, beginning of period                          1
                                                                 ----------

Cash and cash equivalents, end of period                        $      --
                                                                 ==========


See accompanying notes to financial statements.


                                       F-6

<PAGE>
                            GST NETWORK FUNDING, INC.

                          Notes to Financial Statements

                                 April 16, 1998

                                 (In thousands)


(1)      SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

         DESCRIPTION OF THE COMPANY

         GST Network  Funding,  Inc. (the Company) was formed on April 16, 1998.
         The Company is a  wholly-owned  subsidiary  of GST USA, Inc. (GST USA),
         which is a  wholly-owned  subsidiary  of GST  Telecommunications,  Inc.
         (GST).

         The Company's operations are limited to (i) purchasing equipment, (ii)
         selling equipment to parent, (iii) receiving payments under
         intercompany notes, and (iv) making payments of interest and principal
         on senior secured notes.

         RESTRICTED INVESTMENTS

         The  Company   classifies   its  restricted   investments,   consisting
         exclusively of U.S. Treasury securities,  as available-for-sale.  These
         investments are restricted for the acquisition of equipment.  Amortized
         cost approximates the market value of investment  securities at May 31,
         1998.

         DEFERRED FINANCING COSTS

         Deferred   financing   costs   consisting  of  legal,   accounting  and
         underwriting  fees related to the May 4, 1998 debt  offering  have been
         deferred and are being  amortized to interest  expense over the life of
         the note.

         INCOME TAXES

         The Company  accounts  for income  taxes under the asset and  liability
         method.  Under the asset and liability  method,  deferred  income taxes
         reflect  the future tax  consequences  of  differences  between the tax
         bases of assets and liabilities and their financial  reporting  amounts
         at each  year-end.  Deferred  tax assets and  liabilities  are measured
         using enacted tax rates expected to be recovered or settled. The effect
         on deferred tax assets and  liabilities of a change in the tax rates is
         recognized in income in the period that  includes the  enactment  date.
         Valuation  allowances are established when necessary to reduce deferred
         tax assets to the amounts expected to be realized.



                                       F-7

<PAGE>
                            GST NETWORK FUNDING, INC.
                    Notes to Financial Statements, Continued

                                 (In thousands)

         FINANCIAL INSTRUMENTS

         The carrying  amounts  reported in the balance  sheet for cash and cash
         equivalents,  accounts payable and accrued liabilities approximate fair
         values due to the short maturity of those instruments.

         The carrying amount of the Company's  long-term debt  approximates  its
         fair  value.  The  fair  value  of the  Company's  long-term  debt  was
         determined  based on quoted  market  prices  for  similar  issues or on
         current rates  available to the Company for debt of the same  remaining
         maturities and similar terms.

         Fair value  estimates  are made at a specific  point in time,  based on
         relevant  market  information  about the  financial  instrument.  These
         estimates  are  subjective  in nature  and  involve  uncertainties  and
         matters of significant judgment and therefore cannot be determined with
         precision.  Changes  in  assumptions  could  significantly  affect  the
         estimates.

         UNAUDITED FINANCIAL INFORMATION

         The  financial  data  for the  period  from  April  16,  1998  (date of
         inception)  to May 31,  1998 is  unaudited,  but in the  opinion of the
         management of the Company, reflects all adjustments (consisting only of
         normal  recurring  adjustments)  necessary for a fair  presentation  of
         results for interim periods.

         USE OF ESTIMATES

         The  preparation of 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
         date of the financial  statements and the reported  amounts of revenues
         and expenses during the reporting  period.  Actual results could differ
         from those estimates.


(2)      FINANCING ARRANGEMENTS

         LONG-TERM DEBT

         The Company's long-term debt consists of the following at May 31, 1998:

          Senior secured discount notes, interest at 10.5% with
               semiannual interest payments due commencing
               November 1, 2003, principal due May 1, 2008       $ 302,282
                                                                 =========


                                       F-8
<PAGE>
                            GST NETWORK FUNDING, INC.
                    Notes to Financial Statements, Continued

                                 (In thousands)

         ISSUANCE OF SENIOR SECURED DISCOUNT NOTES

         The Company  completed a private  placement (the May Offering) under an
         indenture  (the  Indenture)  dated  May 4, 1998 of  $500,000  aggregate
         principal amount at maturity ($299,995 initial accreted value) of 10.5%
         senior secured discount notes due 2008 (the Notes). The Notes were sold
         at a  substantial  discount,  and there will be no accrual of  interest
         prior to May 2003 and no cash payment of interest  until November 2003.
         The net proceeds  from the sale of the Notes,  approximately  $288,900,
         are restricted for the acquisition of telecommunications  equipment and
         other related costs as defined in the Indenture.  The Notes are subject
         to certain debt covenants.

         Pursuant to the Indenture,  all purchased equipment will be sold to GST
         USA for use in its telecommunications  operations.  In exchange for the
         purchased  equipment,  GST USA will issue to the  Company  intercompany
         notes due May 1, 2003 (the Intercompany Notes).  Additionally,  on each
         May 1 and November 1, GST USA will pay to the Company a commitment  fee
         equal to 4.5% per annum of the amount by which the  $500,000  principal
         amount at  maturity  exceeds  the  amount of  Intercompany  Notes  then
         outstanding.  At May 31,  1998,  the  Company  had  accrued  $1,688  in
         commitment  fees  receivable  from GST USA. The  commitment fee will be
         paid  semiannually,  commencing  November  1, 1998,  by GST USA issuing
         promissory  notes due May 1, 2003 (the Fee Notes) to the Company in the
         amount of such  fees.  The Fee Notes and  Intercompany  Notes will bear
         interest  at 12.5% per  annum,  compounding  semiannually,  and will be
         guaranteed by GST. The Notes are secured by the  restricted  investment
         securities  purchased with the proceeds from the sale of the Notes, and
         will be secured by any equipment purchased with such proceeds,  the Fee
         Notes and the Intercompany Notes.

         The  Indenture  provides that GST USA will assume and become the direct
         obligor on the Notes and GST will guarantee the Notes on May 1, 2003 or
         earlier if permitted by the terms of their existing debt. Once assumed,
         the notes will be senior secured  indebtedness  of GST USA and the note
         guarantee will be senior unsecured indebtedness of GST.

         The Notes are redeemable, in whole or in part, at the option of GST USA
         on or after May 1, 2003, initially at 105.25% of their principal amount
         at maturity,  plus accrued and unpaid  interest,  declining  ratably to
         100% on or after May 1, 2006. If on May 1, 2003,  GST USA is prohibited
         from assuming all of the Notes,  the Company will redeem the portion of
         the Notes that cannot be assumed at 105.25% of their  principal  amount
         at maturity, plus accrued and unpaid interest.


                                       F-9

<PAGE>
                            GST NETWORK FUNDING, INC.
                    Notes to Financial Statements, Continued

                                 (In thousands)


(3)      INCOME TAXES

         Income  tax  expense  for the  period  from  April  16,  1998  (date of
         inception) to May 31, 1998 consists of:

                                CURRENT          DEFERRED       TOTAL
                             -------------      ----------    ---------

          Federal            $    939                --           939
          State                    --                --            --
                               -----------      ----------     --------

                             $    939                --           939
                               ===========      ==========     ========

         The actual  expense  differs from the  "expected"  expense  computed by
         applying the U.S. federal corporate rate as follows:

          Computed "expected" income tax expense         $   99
          Increase resulting from:
               Change in valuation allowance                840
                                                         ------

          Actual tax expense                             $  939
                                                         ======

         The tax effects of temporary differences that give rise to deferred tax
         assets  and  deferred  tax  liabilities  at May 31,  1998  are  derived
         primarily  from  interest  expense  not  currently  deductible  for tax
         purposes.  Gross deferred tax assets and liabilities amount of $840 and
         $-0-, respectively, at May 31, 1998.

         The valuation  allowance for deferred tax assets as of May 31, 1998 was
         $840.  The net change in the total  valuation  allowance for the period
         from April 16, 1998 (date of inception) to May 31, 1998 was an increase
         of $840.

                                      F-10
<PAGE>
                                     PART II

                   INFORMATION NOT REQUIRED IN THE PROSPECTUS


ITEM 20. INDEMNIFICATION OF DIRECTORS AND OFFICERS.

GST NETWORK

         The General  Corporation  Law of the State of Delaware  (the  "Delaware
Law") permits indemnification of directors, employees and agents of corporations
under certain  conditions  and subject to certain  limitations.  Pursuant to the
Delaware Law, GST Network has included in its Certificate of  Incorporation  and
bylaws a provision to  eliminate  the personal  liability of its  directors  for
monetary  damages  for  breach or  alleged  breach of their  duty of care to the
fullest  extent  permitted  by the  Delaware Law and to provide that GST Network
shall  indemnify its directors and officers to the fullest  extent  permitted by
the Delaware Law.

GST USA

         Pursuant to the Delaware  Law, GST USA has included in its  Certificate
of Incorporation  and bylaws a provision to eliminate the personal  liability of
its directors for monetary damages for breach or alleged breach of their duty of
care to the fullest extent permitted by the Delaware Law and to provide that GST
USA shall  indemnify its directors and officers to the fullest extent  permitted
by the Delaware Law.

GST

         Except  as  hereinafter  set  forth,  there  is  no  statute,   charter
provision,  by-law,  contract or other  arrangement  under which any controlling
person,  director  or officer of GST is  insured  or  indemnified  in any manner
against liability which he may incur in his capacity as such.

         GST's  authority to indemnify its directors and officers is governed by
the  provisions  of Section  124 of the Canada  Business  Corporations  Act (the
"CBCA"), as follows:

              (1)  INDEMNIFICATION.  Except  in  respect  of an  action by or on
behalf of the  corporation or body corporate to procure a judgment in its favor,
a corporation may indemnify a director or officer of the  corporation,  a former
director  or  officer  of the  corporation  or a person who acts or acted at the
corporation's  request as a director or officer of a body corporate of which the
corporation  is or was a  shareholder  or  creditor,  and his  heirs  and  legal
representatives,  against all costs,  charges and expenses,  including an amount
paid to settle an action or satisfy a  judgment,  reasonably  incurred by him in
respect of any civil,  criminal or administrative  action or proceeding to which
he is made a party by reason of being or having  been a  director  or officer of
such corporation or body corporate, if

              (a) he acted  honestly  and in good  faith with a view to the best
                  interests of the corporation; and

              (b) in  the  case  of  a  criminal  or  administrative  action  or
                  proceeding  that is  enforced  by a monetary  penalty,  he had
                  reasonable grounds for believing that his conduct was lawful.

              (2)  INDEMNIFICATION IN DERIVATIVE ACTIONS. A corporation may with
the  approval of a court  indemnify a person  referred to in  subsection  (1) in
respect of an action by or on behalf of the  corporation  or body  corporate  to
procure a judgment in its favor,  to which he is made a party by reason of being
or having been a director or an officer of the  corporation  or body  corporate,
against all costs, charges and expenses reasonably incurred by him in connection
with such action if he fulfills the conditions set out in paragraphs  (1)(a) and
(b).

              (3)  INDEMNITY  AS OF  RIGHT.  Notwithstanding  anything  in  this
section,  a person  referred to in subsection  (1) is entitled to indemnity from
the  corporation  in respect  of all  costs,  charges  and  expenses  reasonably
incurred  by him in  connection  with the  defense  of any  civil,  criminal  or
administrative action or proceeding to which he is

                                      II-1

<PAGE>
made a party by reason of being or having  been a  director  or  officer  of the
corporation or body corporate, if the person seeking indemnity

              (a) was  substantially  successful on the merits in his defense of
                  the action or proceeding, and

              (b) fulfills the conditions set out in paragraphs (1)(a) and (b).

              (4) DIRECTORS' AND OFFICERS' INSURANCE. A corporation may purchase
and maintain  insurance for the benefit of any person referred to subsection (1)
against any liability incurred by him

              (a) in his  capacity as a director or officer of the  corporation,
                  except  where the  liability  relates  to his  failure  to act
                  honestly  and in good faith with a view to the best  interests
                  of the corporation; or

              (b) in his  capacity  as a director  or  officer  of another  body
                  corporate  where  he acts or  acted  in that  capacity  at the
                  corporation's  request,  except where the liability relates to
                  his failure to act  honestly  and in good faith with a view to
                  the best interests of the body corporate.

              (5) APPLICATION TO COURT. A corporation or a person referred to in
subsection  (1) may apply to a court for an order  approving an indemnity  under
this  section  and the court may so order and make any  further  order it thinks
fit.

              (6) NOTICE TO DIRECTOR.  An applicant  under  subsection (5) shall
give the Director  appointed  under the CBCA notice of the  application  and the
Director is entitled to appear and be heard in person or by counsel.

              (7) OTHER NOTICE.  On an  application  under  subsection  (5), the
court may order notice to be given to any  interested  person and such person is
entitled to appear and be heard in person or by counsel.

              GST's by-laws  provide  that,  subject to Section 124 of the CBCA,
every director and officer of GST and his heirs,  executors,  administrators and
other legal personal representatives shall be indemnified and held harmless from
and against  (a) any  liability  and all costs,  charges  and  expenses  that he
sustains or incurs in respect of any action, suit or proceeding that is proposed
or commenced  against him for or in respect of anything done or permitted by him
in  respect of the  execution  of the  duties of his  office,  and (b) all other
costs, charges and expenses that he sustains or incurs in respect of the affairs
of GST.

              GST  maintains a  $25,000,000  directors  and  officers  liability
insurance policy.

              GST also has  agreements in place to indemnify  certain  directors
and  executive  officers  pursuant  to  indemnification   agreements  with  such
directors and executive officers from and against any and all expenses,  losses,
claims, damages and liability incurred by such director or executive officer for
or as a result of action  taken or not taken while such  director  or  executive
officer was acting in his capacity as a director,  officer, employee or agent of
the Company.

ITEM 21. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.

     (a) The  following is a complete  list of Exhibits  filed as a part of this
Registration Statement, which are incorporated herein:

          1       Placement  Agreement  dated April 29,  1998,  by and among GST
                  Network,  GST, GST USA, and the Placement Agents (incorporated
                  by reference to Exhibit 10.1 to GST's  Current  Report on Form
                  8-K dated May 4, 1998 (the "May 8-K").

         *3.1     Certificate of Incorporation of GST Network.

         *3.2     By-laws of GST Network.


                                      II-2

<PAGE>
          3.3     Certificate   of   Incorporation   of  GST  USA,   as  amended
                  (incorporated  by  reference  to Exhibit 3.3 to the  Company's
                  Registration  Statement on Form S-4 (File No.  333-33601) (the
                  "1997 S-4").

          3.4     By-laws of GST USA  (incorporated  by reference to Exhibit 3.4
                  to the 1997 S-4).

          3.5     Certificate of Incorporation of GST  Telecommunications,  Inc.
                  (incorporated  by reference  to Exhibit 3(a) to the  Company's
                  Annual Report on Form 10-K for the fiscal year ended September
                  30, 1996).

          3.6     Amended and Restated By-laws of GST  Telecommunications,  Inc.
                  (incorporated  by  reference  to Exhibit 3.1 to the  Company's
                  Form S-3 (File No. 333-38091).

          4.1     Indenture  dated as of May 4, 1998,  by and among GST Network,
                  GST USA,  GST and  United  States  Trust  Company  of New York
                  (incorporated by reference to Exhibit 4.1 to the May 8-K).

         #5       Opinion of Olshan Grundman Frome & Rosenzweig LLP.

         #8.1     Opinion of Olshan Grundman Frome & Rosenzweig LLP (included in
                  Exhibit 5 to this Registration Statement).

         #8.2     Opinion of Thorsteinssons.


         *23.1    Consent by KPMG Peat Marwick LLP.

         *23.2    Consent of KPMG Peat Marwick LLP.

         *23.3    Consent of KPMG Peat Marwick LLP.

         #23.4    Consent of Olshan Grundman Frome & Rosenzweig LLP (included in
                  Exhibit 5 to this Registration Statement).

         *25      Statement of eligibility of trustee.

         99.1     Registration  Rights Agreement dated May 4, 1998, by and among
                  GST   Network,   GST  USA,  GST  and  the   Placement   Agents
                  (incorporated by reference to Exhibit 10.2 to the May 8-K).

         99.2     Collateral  Pledge and Security  Agreement  dated May 4, 1998,
                  from GST Network to United  States  Trust  Company of New York
                  (incorporated by reference to Exhibit 10.3 to the May 8-K).

         *99.3    Form of Letter of Transmittal for Tender of all outstanding 10
                  1/2% Senior Secured Discount Notes Due 2008 in exchange for 10
                  1/2% Senior  Secured  Discount  Exchange Notes Due 2008 of GST
                  Network Funding, Inc.

         *99.4    Form of Tender  for all  outstanding  10 1/2%  Senior  Secured
                  Discount Notes Due 2008 in exchange for 10 1/2% Senior Secured
                  Discount Exchange Notes Due 2008 of GST Network Funding, Inc.

         *99.5    Form of Instruction to Registered Holder from Beneficial Owner
                  of 10 1/2%  Senior  Secured  Discount  Notes  due  2008 of GST
                  Network Funding, Inc.

         *99.6    Form of Notice of Guaranteed  Delivery for outstanding 10 1/2%
                  Senior Secured Discount Notes Due 2008 in exchange for 10 1/2%
                  Senior Secured Discount Exchange Notes Due 2008 of GST Network
                  Funding, Inc.

_______________
*        Filed herewith.
#        To be filed by amendment.

                                      II-3

<PAGE>
ITEM 22. UNDERTAKINGS.

(a)      The undersigned registrants hereby undertake:

         (1) To file, during any period in which offers or sales are being made,
a post-effective amendment to this registration statement:

         (i) To include  any  prospectus  required  by Section  10(a)(3)  of the
Securities Act of 1933;

         (ii) To reflect in the prospectus any facts or events arising after the
effective date of the registration  statement (or the most recent post-effective
amendment  thereof)  which,  individually  or  in  the  aggregate,  represent  a
fundamental  change in the information set forth in the registration  statement.
Notwithstanding the foregoing,  any increase or decrease in volume of securities
offered (if the total dollar value of  securities  offered would not exceed that
which  was  registered)  and any  deviation  from  the  low or  high  and of the
estimated  maximum  offering  range may be reflected  in the form of  prospectus
filed with the  Commission  pursuant  to Rule 424(b) if, in the  aggregate,  the
changes in volume and price set forth in the  "Calculation of Registration  Fee"
table in the effective registration statement.

         (iii) To include any material  information  with respect to the plan of
distribution  not  previously  disclosed  in the  registration  statement or any
material change to such information in the registration statement.

         (2) That,  for the  purpose  of  determining  any  liability  under the
Securities Act of 1933, each such post-effective amendment shall be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such  securities at that time shall be deemed to be the initial BONA
FIDE offering thereof.

         (3) To remove from registration by means of a post-effective  amendment
any of the securities being registered which remain unsold at the termination of
the offering.

         (4) That prior to any public  reoffering of the  securities  registered
hereunder  through the use of a prospectus which is a part of this  registration
statement,  by any person or party who is deemed to be an underwriter within the
meaning  of Rule  145(c)  under the  Securities  Act of 1933,  as  amended  (the
"Securities  Act"), the issuer  undertakes that such reoffering  prospectus will
contain the  information  called for by the  applicable  registration  form with
respect to reofferings by persons who may be deemed underwriters, in addition to
the information called for by the other Items of the applicable form.

         (5) That every  prospectus  (i) that is filed pursuant to paragraph (4)
immediately preceding, or (ii) that purports to meet the requirements of section
10(a)(3) of the  Securities  Act and is used in  connection  with an offering of
securities subject to Rule 415 under the Securities Act, will be filed as a part
of an amendment to the  registration  statement  and will not be used until such
amendment is  effective,  and that,  for purposes of  determining  any liability
under the Securities Act, each such post-effective  amendment shall be deemed to
be a new registration  statement relating to the securities offered therein, and
the offering of such  securities  at that time shall be deemed to be the initial
bona fide offering thereof.

(b) Insofar as indemnification  for liabilities arising under the Securities Act
may  be  permitted  to  directors,  officers  and  controlling  persons  of  the
registrants pursuant to the foregoing provisions,  or otherwise, the registrants
have been advised that in the opinion of the Commission such  indemnification is
against  public  policy as expressed in the  Securities  Act and is,  therefore,
enforceable.  In the  event  that  a  claim  for  indemnification  against  such
liabilities  (other than the payment by the registrants of expenses  incurred or
paid by a director,  officer or  controlling  person of the  registrants  in the
successful  defense of any  action,  suit or  proceedings)  is  asserted by such
director,  officer or controlling person in connection with the securities being
registered,  the  registrants  will,  unless in the  opinion of its  counsel the
matter  has  been  settled  by  controlling  precedent,  submit  to a  court  of
appropriate  jurisdiction the question whether  indemnification by it is against
public  policy as  expressed in the  Securities  Act and will be governed by the
final adjudication of such issue.


                                      II-4

<PAGE>
(c) The  undersigned  registrants  hereby  undertake  to respond to requests for
information  that is incorporated  by reference into the prospectus  pursuant to
Items 4, 10(b),  11 or 13 of this Form,  within one  business  day of receipt of
such  request,  and to send the  incorporated  documents  by first class mail or
other equally  prompt means.  This includes  information  contained in documents
filed subsequent to the effective date of the registration statement through the
date of responding to the request.

(d) The  undersigned  registrants  hereby  undertake  to  supply  by  means of a
post-effective  amendment  all  information  concerning a  transaction,  and the
company  being  acquired  involved  therein,  that  was not the  subject  of and
included in the registration statement when it became effective.

(e)  The  undersigned   registrants  hereby  undertake  that,  for  purposes  of
determining  any  liability  under  the  Securities  Act,  each  filing  of  the
registrants'  annual report pursuant to Section 13(a) or 15(d) of the Securities
Exchange Act of 1934 (and, where applicable,  each filing of an employee benefit
plan's annual report pursuant to Section 15(d) of the Securities Exchange Act of
1934) that is incorporated by reference in the  registration  statement shall be
deemed to be a new  registration  statement  relating to the securities  offered
therein,  and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.

                                      II-5

<PAGE>
                                   SIGNATURES

         Pursuant to the requirements of the Securities Act of 1933, as amended,
GST Network  Funding,  Inc.  has duly caused this  Registration  Statement to be
signed on its behalf by the undersigned,  thereunto duly authorized, in the City
of Vancouver, State of Washington, on August 4, 1998.


                                       GST NETWORK FUNDING, INC.


                                       By:     /S/ JOSEPH A. BASILE
                                               -----------------------
                                               Joseph A. Basile
                                               Chief Executive Officer


                                POWER OF ATTORNEY

         Each person whose  signature  appears  below  constitutes  and appoints
Joseph A. Basile,  Clifford Sander, Daniel L. Trampush,  Robert Ferchat and Jack
G. Armstrong,  and each of them singly, as his true and lawful attorneys-in-fact
and agents with full power of substitution and resubstitution,  for him, and his
name,  place and stead, in any and all capacities to sign any and all amendments
(including  post-effective  amendments)  and  supplements  to this  Registration
Statement,  and to file the  same,  with all  exhibits  thereto,  and all  other
documents in connection therewith,  with the Securities and Exchange Commission,
granting unto said  attorneys-in-fact  and agents full power and authority to do
and perform each and every act and thing  requisite and necessary to be done, as
full to all  intents  and  purposes  as he might or could do in  person,  hereby
ratifying and  confirming  all that said  attorneys-in-fact  and agents or their
substitute or substitutes may lawfully do or cause to be done by virtue hereof.

         Pursuant to the  requirements of the Securities  Act, as amended,  this
Registration  Statement  has  been  signed  by  the  following  persons  in  the
capacities on August 4, 1998.

          SIGNATURE                             TITLE
          ---------                             -----


     /S/ JOSEPH A. BASILE         Chief Executive Officer, President (Principal
- ---------------------------       Executive Officer) and Director
   (Joseph A. Basile)


    /S/ DANIEL L. TRAMPUSH        Senior Vice President and Chief Financial
- ---------------------------       Officer (Principal Financial Officer)
  (Daniel L. Trampush)


   /S/ CLIFFORD V. SANDER         Senior Vice President, Treasurer and Assistant
  (Clifford V. Sander)            Secretary (Principal Accounting Officer)


  /S/ ROBERT FERCHAT              Director
- ---------------------------
    (Robert Ferchat)


 /S/ JACK G. ARMSTRONG            Director
- ---------------------------
   (Jack G. Armstrong)


                                      II-6

<PAGE>
                                   SIGNATURES

         Pursuant to the  requirements  of the  Securities Act of 1933, GST USA,
Inc. has duly caused this  Registration  Statement to be signed on its behalf by
the undersigned,  thereunto duly authorized, in the City of Vancouver,  State of
Washington, on August 4, 1998.


                                            GST USA, INC.


                                            By: /S/ JOSEPH A. BASILE
                                                ------------------------
                                                Joseph A. Basile
                                                Chief Executive Officer


                                POWER OF ATTORNEY

         Each person whose  signature  appears  below  constitutes  and appoints
Joseph A. Basile,  Daniel Trampush,  Clifford V. Sander, Robert Ferchat and Jack
G. Armstrong,  and each of them singly, as his true and lawful attorneys-in-fact
and agents with full power of substitution and resubstitution,  for him, and his
name,  place and stead, in any and all capacities to sign any and all amendments
(including  post-effective  amendments)  and  supplements  to this  Registration
Statement,  and to file the  same,  with all  exhibits  thereto,  and all  other
documents in connection therewith,  with the Securities and Exchange Commission,
granting unto said  attorneys-in-fact  and agents full power and authority to do
and perform each and every act and thing  requisite and necessary to be done, as
full to all  intents  and  purposes  as he might or could do in  person,  hereby
ratifying and  confirming  all that said  attorneys-in-fact  and agents or their
substitute or substitutes may lawfully do or cause to be done by virtue hereof.

         Pursuant to the  requirements of the Securities Act, this  Registration
Statement has been signed by the following  persons in the capacities  indicated
on August 4, 1998.

         SIGNATURE                              TITLE

   /S/ JOSEPH A. BASILE          Chief Executive Officer, President and Director
- ---------------------------      (Principal Executive Officer)
       Joseph A. Basile

  /S/ DANIEL TRAMPUSH            Senior Vice President and Chief Financial
- ---------------------------      Officer (Principal Financial Officer)
        Daniel Trampush          

  /S/ CLIFFORD V. SANDER         Senior Vice President, Treasurer, Chief
- ---------------------------      Accounting Officer and Assistant Secretary
     (Clifford V. Sander)        (Principal Accounting Officer)

 /S/ ROBERT FERCHAT              Director
- ---------------------------
       (Robert Ferchat)


/S/ JACK G. ARMSTRONG            Director
- ---------------------------
      (Jack G. Armstrong)



                                      II-7

<PAGE>
                                   SIGNATURES

Pursuant to the  requirements  of the Securities Act of 1933, the registrant has
duly  caused  this  registration  statement  to be signed  on its  behalf by the
undersigned,  thereunto  duly  authorized  in the  City of  Vancouver,  State of
Washington, on this 4th day of August 1998.

                                       GST TELECOMMUNICATIONS, INC.
                                       ----------------------------
                                              (Registrant)

                                       By: /S/ ROBERT FERCHAT
                                           ----------------------
                                           Robert Ferchat, Chairman of the Board


                       POWERS OF ATTORNEY AND SIGNATORIES

Pursuant to the  requirements  of the Securities  Act of 1933, as amended,  this
Registration  Statement  has  been  signed  by  the  following  persons  in  the
capacities  and on the date  indicated.  Each of the  undersigned  officers  and
directors of GST Telecommunications, Inc. hereby constitutes and appoints Robert
Ferchat, Joseph A. Basile, Stephen Irwin, Daniel L. Trampush, Clifford V. Sander
and  Jack  G.   Armstrong   and  each  of  them  singly,   as  true  and  lawful
attorneys-in-fact and agents with full power of substitution and resubstitution,
for him in his name in any and all  capacities,  to sign any and all  amendments
(including  post-effective  amendments) to this  Registration  Statement and any
related  registration  statement filed pursuant to Rule 462(b) of the Securities
Act of 1933,  as amended and to file the same,  with all exhibits  thereto,  and
other  documents  in  connection  therewith,  with the  Securities  and Exchange
Commission and to prepare any and all exhibits  thereto,  and other documents in
connection  therewith,  and to make any applicable  state securities law or blue
sky filings,  granting unto said  attorneys-in-fact  and agents,  full power and
authority to do and perform each and every act and thing  requisite or necessary
to be done to enable GST Telecommunications,  Inc. to comply with the provisions
of the  Securities  Act  of  1933,  as  amended,  and  all  requirements  of the
Securities and Exchange  Commission,  as fully to all intents and purposes as he
might or could do in  person,  hereby  ratifying  and  confirming  all that said
attorneys-in-fact  and agents, or their substitute or substitutes,  may lawfully
do or cause to be done by virtue hereof.

<TABLE>
<CAPTION>

               SIGNATURE                                           TITLE                                        DATE
               ---------                                           -----                                        ----

<S>                                        <C>                                                             <C>
/S/ ROBERT FERCHAT                         Chairman of the Board and Director                              August 4, 1998
- ----------------------------------
        (Robert Ferchat)


/S/ JOSEPH A. BASILE, JR.                                                                                  August 4, 1998
- ----------------------------------         President, Chief Executive Officer, Chief
    (Joseph A. Basile, Jr.)                Operating Officer (Principal Executive Officer)
                                           and Director


/S/ DANIEL TRAMPUSH 
- ---------------------------------          Senior Vice President and Chief Financial                       August 4, 1998
  (Daniel Trampush)                        Officer (Principal Financial Officer)


/S/ CLIFFORD V. SANDER                     Senior Vice President, Treasurer, Chief                         August 4, 1998
- --------------------------------           Accounting Officer and Assistant Secretary
   (Clifford V. Sander)                    (Principal Accounting Officer)

                                                                                                           August 4, 1998
/S/ STEPHEN IRWIN                          Vice Chairman of the Board, Secretary and
- --------------------------------           Director
     (Stephen Irwin)
</TABLE>

                                      II-8

<PAGE>
<TABLE>
<CAPTION>

               SIGNATURE                                           TITLE                                        DATE
               ---------                                           -----                                        ----

<S>                                        <C>                                                             <C>


/S/ JOHN WARTA                             Director                                                        August 4, 1998
- --------------------------
   (John Warta)


/S/ ROY MEGARRY                            Director                                                        August 4, 1998
- ---------------------------
     (Roy Megarry)


/S/ PETER E. LEGAULT                       Director                                                        August 4, 1998
- -------------------------
   (Peter E. Legault)


/S/ JACK G. ARMSTRONG                                                                                      August 4, 1998
- -------------------------
   (Jack G. Armstrong)                     Director


/S/ MITSUHIRO NAOE                                                                                         August 4, 1998
- --------------------------
   (Mitsuhiro Naoe)                        Director


/s/ Joseph G. Fogg, III                                                                                    August 4, 1998
- ----------------------------               Director
   (Joseph G. Fogg, III)



The Company's Authorized Representative
in the United States

/S/ DANIEL TRAMPUSH                                                                                        August 4, 1998
- -------------------------
   Daniel L. Trampush
</TABLE>


                                      II-9

<PAGE>
                                  EXHIBIT INDEX




     1   Placement  Agreement  dated April 29,  1998,  by and among GST Network,
         GST, GST USA, and the Placement  Agents  (incorporated  by reference to
         Exhibit 10.1 to GST's Current Report on Form 8-K dated May 4, 1998 (the
         "May 8-K").

    *3.1 Certificate of Incorporation of GST Network.

    *3.2 By-laws of GST Network.

     3.3 Certificate of  Incorporation  of GST USA, as amended  (incorporated by
         reference  to Exhibit 3.3 to the  Company's  Registration  Statement on
         Form S-4 (File No. 333-33601) (the "1997 S-4").

     3.4 By-laws of GST USA  (incorporated  by  reference  to Exhibit 3.4 to the
         1997 S-4).

     3.5 Certificate   of   Incorporation   of  GST   Telecommunications,   Inc.
         (incorporated  by  reference to Exhibit  3(a) to the  Company's  Annual
         Report on Form 10-K for the fiscal year ended September 30, 1996).

     3.6 Amended  and   Restated   By-laws  of  GST   Telecommunications,   Inc.
         (incorporated  by  reference to Exhibit 3.1 to the  Company's  Form S-3
         (File No. 333-38091).

     4.1 Indenture  dated as of May 4, 1998, by and among GST Network,  GST USA,
         GST and  United  States  Trust  Company  of New York  (incorporated  by
         reference to Exhibit 4.1 to the May 8-K).

    #5   Opinion of Olshan Grundman Frome & Rosenzweig LLP.

    #8.1 Opinion of Olshan  Grundman Frome & Rosenzweig LLP (included in Exhibit
         5 to this Registration Statement).

    #8.2 Opinion of Thorsteinssons.

   *23.1 Consent by KPMG Peat Marwick LLP.

   *23.2 Consent of KPMG Peat Marwick LLP.

   *23.3 Consent of KPMG Peat Marwick LLP.

   #23.4 Consent of Olshan  Grundman Frome & Rosenzweig LLP (included in Exhibit
         5 to this Registration Statement).

    *25  Statement of eligibility of trustee.

    99.1 Registration  Rights  Agreement  dated  May 4,  1998,  by and among GST
         Network,  GST  USA,  GST  and the  Placement  Agents  (incorporated  by
         reference to Exhibit 10.2 to the May 8-K).

    99.2 Collateral  Pledge and Security  Agreement  dated May 4, 1998, from GST
         Network to United  States Trust  Company of New York  (incorporated  by
         reference to Exhibit 10.3 to the May 8-K).

   *99.3 Form of Letter of  Transmittal  for Tender of all  outstanding  10 1/2%
         Senior  Secured  Discount Notes Due 2008 in exchange for 10 1/2% Senior
         Secured Discount Exchange Notes Due 2008 of GST Network Funding, Inc.


                                      II-10

<PAGE>
   *99.4 Form of Tender for all  outstanding  10 1/2%  Senior  Secured  Discount
         Notes Due 2008 in exchange for 10 1/2% Senior Secured Discount Exchange
         Notes Due 2008 of GST Network Funding, Inc.

   *99.5 Form of Instruction to Registered  Holder from  Beneficial  Owner of 10
         1/2% Senior  Secured  Discount  Notes due 2008 of GST Network  Funding,
         Inc.

   *99.6 Form of Notice of Guaranteed  Delivery for  outstanding  10 1/2% Senior
         Secured  Discount Notes Due 2008 in exchange for 10 1/2% Senior Secured
         Discount Exchange Notes Due 2008 of GST Network Funding, Inc.




- ---------------------
*   Filed herewith.
#   To be filed by amendment.

                                      II-11


                          CERTIFICATE OF INCORPORATION

                                       OF

                            GST NETWORK FUNDING, INC.


                  FIRST:  The name of the Corporation  is: GST Network  Funding,
Inc. (the "Corporation").

                  SECOND:   The  registered   office  of  the   corporation  and
registered  agent in the State of Delaware is to be located at 1013 Centre Road,
Wilmington,  Delaware  19805,  County of New Castle.  The name of its registered
agent is The Prentice-Hall Corporation System, Inc.

                  THIRD:  The  nature  of the  business,  and  the  objects  and
purposes  proposed  to be  transacted,  promoted  and  carried on, are to do any
lawful act or thing for which a corporation  may be organized  under the General
Corporation Law of the State of Delaware (the "GCL").

                  FOURTH:  The  aggregate  number of  shares of stock  which the
Corporation  shall have  authority to issue is One  Thousand  (1,000) with a par
value of one cent  ($.01) per share,  all of which shall be  designated  "Common
Stock".

                  FIFTH: The name and mailing address of the Incorporator is:

                                    Eugene J. Stroz, Jr.
                                    c/o Olshan Grundman Frome & Rosenzweig LLP
                                    505 Park Avenue
                                    New York, New York 10022

                  SIXTH:  A.  A  director  of  the  Corporation   shall  not  be
personally  liable to the Corporation or its  stockholders  for monetary damages
for breach of fiduciary  duty as a director,  except for  liability  (i) for any
breach of the directors' duty of loyalty to the Corporation or its stockholders,
(ii) for acts or  omissions  not in good  faith  or  which  involve  intentional
misconduct or a knowing violation of law, (iii) under Section 174 of the GCL, or
(iv) for any transaction  from which the director  derived an improper  personal
benefit. If the GCL is amended to authorize corporate action further eliminating
or limiting  the  personal  liability  of  directors,  then the  liability  of a
director of the Corporation shall be eliminated or limited to the fullest extent
permitted  by the  GCL,  as so  amended.  Any  repeal  or  modification  of this
Paragraph A by the  stockholders of the Corporation  shall not adversely  affect
any right or protection of a director of the Corporation  with respect to events
occurring prior to the time of such repeal or modification.


<PAGE>
                          B.  (1) Each  person  who was or is made a party or is
threatened  to be  made a  party  to or is  involved  in any  action,  suit,  or
proceeding,   whether   civil,   criminal,   administrative   or   investigative
(hereinafter a  "proceeding"),  by reason of the fact that he or she or a person
of whom he or she is the legal  representative  is or was a  director,  officer,
employee or agent of the  Corporation or is or was serving at the request of the
Corporation,  as a director, officer or employee or agent of another corporation
or of a partnership, joint venture, trust or other enterprise, including service
with respect to employee benefit plans,  whether the basis of such proceeding is
alleged action in an official capacity as a director, officer, employee or agent
or in any other  capacity  while  serving as a  director,  officer,  employee or
agent,  shall be indemnified and held harmless by the Corporation to the fullest
extent  authorized  by the GCL as the same  exists or may  hereafter  be amended
(but, in the case of any such amendment,  only to the extent that such amendment
permits the Corporation to provide broader  indemnification rights than said law
permitted  the  Corporation  to provide  prior to such  amendment),  against all
expense, liability and loss (including attorneys' fees, judgments,  fines, ERISA
excise  taxes  or  penalties  and  amounts  paid or to be  paid  in  settlement)
reasonably incurred or suffered by such person in connection  therewith and such
indemnification  shall  continue as to a person who has ceased to be a director,
officer,  employee  or agent and shall inure to the benefit of his or her heirs,
executors  and  administrators;  provided,  however,  that except as provided in
paragraph (2) of this Paragraph B with respect to proceedings seeking to enforce
rights to  indemnification,  the  Corporation  shall  indemnify  any such person
seeking  indemnification  in  connection  with a  proceeding  (or part  thereof)
initiated  by  such  person  only if  such  proceeding  (or  part  thereof)  was
authorized  by  the  Board  of  Directors  of  the  Corporation.  The  right  to
indemnification  conferred  in this  Paragraph  B shall be a contract  right and
shall include the right to be paid by the Corporation  the expenses  incurred in
defending  any such  proceeding in advance of its final  disposition;  provided,
however,  that if the GCL requires,  the payment of such expenses  incurred by a
director or officer in his or her  capacity as a director or officer (and not in
any other  capacity) in which  service was or is rendered by such person while a
director  or  officer,  including,  without  limitation,  service to an employee
benefit plan) in advance of the final disposition of a proceeding, shall be made
only upon delivery to the  Corporation of an undertaking by or on behalf of such
director or officer to repay all amounts so advanced if it shall  ultimately  be
determined that such director or officer is not entitled to be indemnified under
this Paragraph B or otherwise.

                              (2)  If  a  claim  under  paragraph  (1)  of  this
Paragraph B is not paid in full by the  Corporation  within  thirty days after a
written claim has been received by the Corporation,

                                       -2-

<PAGE>
the claimant may at any time  thereafter  bring suit against the  Corporation to
recover the unpaid  amount of the claim and, if  successful in whole or in part,
the claimant shall be entitled to be paid also the expense of  prosecuting  such
claim. It shall be a defense to any such action (other than an action brought to
enforce a claim for expenses  incurred in defending any proceeding in advance of
its final disposition where the required  undertaking,  if any is required,  has
been tendered to the Corporation) that the claimant has not met the standards of
conduct which make it permissible under the GCL for the Corporation to indemnify
the claimant for the amount claimed but the burden of proving such defense shall
be on the  Corporation.  Neither the failure of the  Corporation  (including its
Board of Directors,  independent  legal counsel or  stockholders) to have made a
determination  prior to the commencement of such action that  indemnification of
the  claimant  is  proper  in the  circumstances  because  he or she has met the
applicable standard of conduct set forth in the GCL, nor an actual determination
by the Corporation (including its Board of Directors,  independent legal counsel
or  stockholders)  that the  claimant  has not met such  applicable  standard of
conduct,  shall be a defense  to the  action or  create a  presumption  that the
claimant has not met the applicable standard of conduct.

                              (3) The right to  indemnification  and the payment
of  expenses  incurred  in  defending  a  proceeding  in  advance  of its  final
disposition  conferred  in this  Paragraph B shall not be exclusive of any other
right  which  any  person  may have or  hereafter  acquire  under  any  statute,
provision of the  certificate  of  incorporation,  By-Laws,  agreement,  vote of
stockholders or disinterested directors or otherwise.

                              (4) The Corporation may maintain insurance, at its
expense, to protect itself and any director,  officer,  employee or agent of the
Corporation or another corporation,  partnership,  joint venture, trust or other
enterprise  against  any  expense,   liability  or  loss,  whether  or  not  the
Corporation  would have the power to indemnify such person against such expense,
liability or loss under the GCL.

                              (5) The Corporation may, to the extent  authorized
from time to time by the Board of  Directors,  grant rights to  indemnification,
and rights to be paid by the Corporation for the expenses  incurred in defending
any  proceeding  in  advance  of its  final  disposition,  to any  agent  of the
Corporation  to the fullest  extent of the  provisions of this  Paragraph B with
respect  to the  indemnification  and  advancement  of  expenses  of  directors,
officers and employees of the Corporation.

                  SEVENTH:  In  furtherance  and not in limitation of the powers
conferred by law or in this Certificate of Incorporation, the Board of Directors
(and any committee of the Board of

                                       -3-

<PAGE>
Directors) is expressly authorized, to the extent permitted by law, to take such
action or actions as the Board or such  committee may determine to be reasonably
necessary or desirable to (A)  encourage  any person to enter into  negotiations
with the Board of Directors and  management of the  Corporation  with respect to
any transaction which may result in a change in control of the Corporation which
is  proposed  or  initiated  by such  person or (B)  contest  or oppose any such
transaction  which the Board of Directors  or such  committee  determines  to be
unfair, abusive or otherwise undesirable with respect to the Corporation and its
business,   assets  or  properties  or  the  stockholders  of  the  Corporation,
including,  without limitation, the adoption of plans or the issuance of rights,
options,  capital stock, notes, debentures or other evidences of indebtedness or
other  securities of the  Corporation,  which rights,  options,  capital  stock,
notes,  evidences of indebtedness  and other  securities (i) may be exchangeable
for or convertible into cash or other securities on such terms and conditions as
may be  determined  by the Board or such  committee and (ii) may provide for the
treatment of any holder or class of holders  thereof  designated by the Board of
Directors or any such committee in respect of the terms, conditions,  provisions
and rights of such  securities  which is  different  from,  and  unequal to, the
terms,  conditions,  provisions  and  rights  applicable  to all  other  holders
thereof.

                  EIGHTH:  The Corporation  reserves the right to amend,  alter,
change or repeal any provision  contained in this Certificate of  Incorporation,
and any other provisions  authorized by the laws of the State of Delaware at the
time in force may be added or inserted,  subject to the limitations set forth in
this  Certificate of Incorporation  and in the manner now or hereafter  provided
herein by statute,  and all rights,  preferences  and  privileges  of whatsoever
nature conferred upon stockholders, directors or any other persons whomsoever by
and  pursuant to this  Certificate  of  Incorporation  in its present form or as
amended are granted subject to the rights reserved in this Article EIGHTH.

                  IN WITNESS WHEREOF,  I have hereunto set my hand this 16th day
of April, 1998.


                                                  /s/ Eugene J. Stroz, Jr.
                                                  ------------------------
                                                  Eugene J. Stroz, Jr.
                                                  Sole Incorporator


                                       -4-



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

                                     BY-LAWS

                                       OF

                            GST NETWORK FUNDING, INC.

                                  AS ADOPTED ON

                                 APRIL 16, 1998
                        ---------------------------------



                                    ARTICLE I

                                  STOCKHOLDERS

                  SECTION   1.1.   ANNUAL   MEETINGS.   An  annual   meeting  of
stockholders to elect directors and transact such other business as may properly
be  presented  to the  meeting  shall  be held at such  place  as the  Board  of
Directors may from time to time fix, if that day shall be a legal holiday in the
jurisdiction  in which  the  meeting  is to be held,  then on the next day not a
legal holiday or as soon thereafter as may be practical, determined by the Board
of Directors.

                  SECTION  1.2.   SPECIAL   MEETINGS.   A  special   meeting  of
stockholders  may be called at any time by two or more directors or the Chairman
of the  Board or the  President  and  shall be  called  by any of them or by the
Secretary  upon receipt of a written  request to do so specifying  the matter or
matters,  appropriate for action at such a meeting,  proposed to be presented at
the meeting and signed by holders of record of a majority of the shares of stock
that would be entitled to be voted on such matter or matters if the meeting were
held on the day such  request is received  and the record date for such  meeting
were the close of business on the preceding  day. Any such meeting shall be held
at such time and at such  place,  within or without  the State of  Delaware,  as
shall be determined  by the body or person  calling such meeting and as shall be
stated in the notice of such meeting.

                  SECTION   1.3.   NOTICE  OF  MEETING.   For  each  meeting  of
stockholders written notice shall be given stating the place, date and hour and,
in the case of a special meeting,  the purpose or purposes for which the meeting
is called.  Except as otherwise  provided by Delaware law, the written notice of
any meeting shall be given not less than 10 or more than 60 days before the date
of the meeting to each stockholder  entitled to vote at such meeting. If mailed,
notice shall be deemed to be given when deposited in the


<PAGE>

United States mail, postage prepaid,  directed to the stockholder at his address
as it appears on the records of the Corporation.

                  SECTION 1.4. QUORUM.  Except as otherwise required by Delaware
law or the Certificate of Incorporation,  the holders of record of a majority of
the shares of stock  entitled to be voted  present in person or  represented  by
proxy at a meeting shall  constitute a quorum for the transaction of business at
the  meeting,  but in the absence of a quorum the  holders of record  present or
represented  by proxy at such  meeting may vote to adjourn the meeting from time
to time,  without notice other than announcement at the meeting,  until a quorum
is obtained.  At any such adjourned  session of the meeting at which there shall
be present or  represented  the  holders  of record of the  requisite  number of
shares,  any business may be transacted  that might have been  transacted at the
meeting as originally called.

                  SECTION  1.5.  CHAIRMAN  AND  SECRETARY  AT  MEETING.  At each
meeting of stockholders  the Chairman of the Board, or in his absence the person
designated  in  writing  by the  Chairman  of the  Board,  or if no person is so
designated, then a person designated by the Board of Directors, shall preside as
chairman of the meeting;  if no person is so designated,  then the meeting shall
choose a chairman by plurality  vote. The Secretary,  or in his absence a person
designated  by the  chairman  of the  meeting,  shall  act as  secretary  of the
meeting.

                  SECTION 1.6. VOTING;  PROXIES. Except as otherwise provided by
Delaware law or the Certificate of Incorporation,  and subject to the provisions
of Section 1.10:

                           (a) Each  stockholder  shall at every  meeting of the
stockholders  be  entitled  to one vote for each share of capital  stock held by
him.

                           (b) Each stockholder entitled to vote at a meeting of
stockholders  or to express  consent or dissent to  corporate  action in writing
without a meeting  may  authorize  another  person or  persons to act for him by
proxy, but no such proxy shall be voted or acted upon after three years from its
date, unless the proxy provides for a longer period.

                           (c) Directors shall be elected by a plurality vote.

                           (d) Each matter,  other than  election of  directors,
properly  presented  to any meeting  shall be decided by a majority of the votes
cast on the matter.

                           (e) Election of  directors  and the vote on any other
matter  presented to a meeting shall be by written  ballot only if so ordered by
the  chairman of the meeting or if so requested  by any  stockholder  present or
represented by proxy at the meeting entitled to vote in such election or on such
matter, as the case may be.


                                       -2-

<PAGE>
                  SECTION 1.7. ADJOURNED MEETINGS. A meeting of stockholders may
be adjourned  to another  time or place as provided in Section  1.4.  Unless the
Board of  Directors  fixes a new  record  date,  stockholders  of record  for an
adjourned  meeting shall be as originally  determined for the meeting from which
the  adjournment  was taken.  If the adjournment is for more than 30 days, or if
after the  adjournment a new record date is fixed for the adjourned  meeting,  a
notice of the  adjourned  meeting shall be given to each  stockholder  of record
entitled to vote. At the adjourned  meeting any business may be transacted  that
might have been transacted at the meeting as originally called.

                  SECTION 1.8.  CONSENT OF STOCKHOLDERS IN LIEU OF MEETING.  Any
action that may be taken at any annual or special meeting of stockholders may be
taken  without a meeting,  without prior notice and without a vote, if a consent
in writing, setting forth the action so taken, shall be signed by the holders of
outstanding stock having not less than the minimum number of votes that would be
necessary  to  authorize  or take such  action at a meeting  at which all shares
entitled to vote thereon  were  present and voted.  Notice of the taking of such
action shall be given promptly to each stockholder that would have been entitled
to vote thereon at a meeting of stockholders and that did not consent thereto in
writing.

                  SECTION 1.9. LIST OF  STOCKHOLDERS  ENTITLED TO VOTE. At least
10 days before every meeting of stockholders a complete list of the stockholders
entitled to vote at the meeting,  arranged in alphabetical order and showing the
address of each  stockholder and the number of shares  registered in the name of
each stockholder,  shall be prepared and shall be open to the examination of any
stockholder  for any purpose germane to the meeting,  during  ordinary  business
hours, for a period of at least 10 days prior to the meeting,  at a place within
the city where the meeting is to be held.  Such list shall be produced  and kept
at the time and place of the  meeting  during the whole time  thereof and may be
inspected by any stockholder who is present.

                  SECTION  1.10.  FIXING  OF  RECORD  DATE.  In  order  that the
Corporation may determine the  stockholders  entitled to notice of or to vote at
any meeting of stockholders or any adjournment thereof, or to express consent to
corporate action in writing without a meeting, or entitled to receive payment of
any dividend or other  distribution  or allotment of any rights,  or entitled to
exercise any rights in respect of any change, conversion or exchange of stock or
for the purpose of any other lawful  action,  the Board of Directors may fix, in
advance,  a record  date,  which  shall not be more than 60 or less than 10 days
before  the date of such  meeting,  nor  more  than 60 days  prior to any  other
action. If no record date is fixed, the record date for determining stockholders
entitled  to notice of or to vote at a meeting of  stockholders  shall be at the
close of business on the day next  preceding  the day on which  notice is given,
or, if notice is waived,  at the close of business on the day next preceding the
day on which the meeting is held; the record date for  determining  stockholders
entitled to express

                                       -3-

<PAGE>

consent to corporate  action in writing without a meeting,  when no prior action
by the  Board of  Directors  is  necessary,  shall be the day on which the first
written consent is expressed; and the record date for any other purpose shall be
at the close of business on the day on which the Board of  Directors  adopts the
resolution relating thereto.


                                   ARTICLE II

                                    DIRECTORS

                  SECTION   2.1.   NUMBER;   TERM  OF  OFFICE;   QUALIFICATIONS;
VACANCIES.  The  number  of the  directors  constituting  the  entire  Board  of
Directors  shall be the number,  not less than two nor more than 15,  fixed from
time  to  time  by a  majority  of the  total  number  of  directors  which  the
Corporation  would have,  prior to any  increase or  decrease,  if there were no
vacancies,  provided,  however,  that no decrease  shall  shorten the term of an
incumbent  director.  Until  otherwise  fixed by the  directors,  the  number of
directors  constituting  the entire  Board  shall be three.  Directors  shall be
elected  at the  annual  meeting  of  stockholders  to hold  office,  subject to
Sections 2.2 and 2.3,  until the next annual meeting of  stockholders  and until
their  respective  successors  are elected and  qualified.  Vacancies  and newly
created  directorships  resulting from any increase in the authorized  number of
directors may be filled by a majority of the directors then in office,  although
less than a quorum,  or by the sole  remaining  director,  and the  directors so
chosen shall hold office, subject to Sections 2.2 and 2.3, until the next annual
meeting of stockholders  and until their  respective  successors are elected and
qualified.

                  SECTION 2.2. RESIGNATION.  Any director of the Corporation may
resign at any time by giving written notice of such  resignation to the Board of
Directors or the Secretary of the Corporation.  Any such resignation  shall take
effect at the time specified  therein or, if no time be specified,  upon receipt
thereof  by the Board of  Directors  or one of the  above-named  officers;  and,
unless  specified  therein,  the  acceptance  of such  resignation  shall not be
necessary to make it effective. When one or more directors shall resign from the
Board of Directors  effective at a future date, a majority of the directors then
in office,  including those who have so resigned,  shall have power to fill such
vacancy or vacancies,  the vote thereon to take effect when such  resignation or
resignations  shall  become  effective,  and each  director so chosen shall hold
office as provided in these By-Laws in the filling of other vacancies.

                  SECTION  2.3.  REMOVAL.  Any  one  or  more  directors  may be
removed, with or without cause, by the vote or written consent of the holders of
a majority of the shares entitled to vote at an election of directors.

                  SECTION  2.4.  REGULAR AND ANNUAL  MEETINGS;  NOTICE.  Regular
meetings of the Board of Directors shall be held at such

                                       -4-

<PAGE>

time and at such place, within or without the State of Delaware, as the Board of
Directors  may  from  time to time  prescribe.  No  notice  need be given of any
regular meeting,  and a notice, if given, need not specify the purposes thereof.
A meeting of the Board of Directors may be held without notice immediately after
an  annual  meeting  of  stockholders  at the same  place as that at which  such
meeting was held.

                  SECTION 2.5.  SPECIAL  MEETINGS;  NOTICE. A special meeting of
the Board of Directors may be called at any time by the Board of Directors,  the
Chairman of the Board or the President and shall be called by any one of them or
by the  Secretary  upon  receipt of a written  request to do so  specifying  the
matter or  matters,  appropriate  for action at such a meeting,  proposed  to be
presented at the meeting and signed by at least two directors.  Any such meeting
shall be held at such time and at such  place,  within or  without  the State of
Delaware,  as shall be  determined  by the body or person  calling such meeting.
Notice of such meeting  stating the time and place thereof shall be given (a) by
deposit of the notice in the United States mail,  first class,  postage prepaid,
at least  seven days  before  the day fixed for the  meeting  addressed  to each
director  at his address as it appears on the  Corporation's  records or at such
other  address as the  director  may have  furnished  the  Corporation  for that
purpose,  or (b) by delivery of the notice  similarly  addressed for dispatch by
telegraph,  cable or radio or by  delivery  of the  notice  by  telephone  or in
person, in each case at least 24 hours before the time fixed for the meeting.

                  SECTION 2.6. PRESIDING OFFICER AND SECRETARY AT MEETINGS. Each
meeting of the Board of Directors  shall be presided over by the Chairman of the
Board or in his  absence by such  member of the Board of  Directors  as shall be
chosen at the meeting. The Secretary,  or in his absence an Assistant Secretary,
shall act as  secretary  of the  meeting,  or if no such  officer is present,  a
secretary of the meeting shall be designated  by the person  presiding  over the
meeting.

                  SECTION 2.7. QUORUM. Three directors shall constitute a quorum
for the  transaction  of business,  but in the absence of a quorum a majority of
those  present  (or if only one be  present,  then  that  one) may  adjourn  the
meeting,  without notice other than announcement at the meeting, until such time
as a quorum is present.  The vote of the majority of the directors  present at a
meeting at which a quorum is present shall be the act of the Board of Directors.

                  SECTION  2.8.  MEETING BY  TELEPHONE.  Members of the Board of
Directors or of any committee  thereof may  participate in meetings of the Board
of Directors or of such  committee by means of  conference  telephone or similar
communications  equipment  by means of which all  persons  participating  in the
meeting can hear each other, and such participation shall constitute presence in
person at such meeting.


                                       -5-

<PAGE>

                  SECTION  2.9.  ACTION  WITHOUT   MEETING.   Unless   otherwise
restricted by the Certificate of Incorporation, any action required or permitted
to be taken at any meeting of the Board of Directors or of any committee thereof
may be taken  without a meeting if all members of the Board of  Directors  or of
such  committee,  as the case may be, consent thereto in writing and the writing
or writings are filed with the minutes of  proceedings of the Board of Directors
or of such committee.

                  SECTION 2.10.  COMMITTEES OF THE BOARD. The Board of Directors
may, by resolution passed by the whole Board of Directors, designate one or more
other committees, each such committee to consist of one or more directors as the
Board of Directors may from time to time determine.  Any such committee,  to the
extent provided in such  resolution or resolutions,  shall have and may exercise
the powers and  authority  of the Board of Directors  in the  management  of the
business and affairs of the  Corporation,  but no such committee shall have such
power of authority in reference to amending the  Certificate  of  Incorporation,
adopting  an  agreement  of  merger  or   consolidation,   recommending  to  the
stockholders  the sale,  lease or  exchange of all or  substantially  all of the
Corporation's   property  and  assets,   recommending  to  the   stockholders  a
dissolution of the Corporation or a revocation of a dissolution, or amending the
By-Laws; and unless the resolution shall expressly so provide, no such committee
shall have the power or  authority  to declare a dividend  or to  authorize  the
issuance  of  stock.  In  the  absence  or  disqualification  of a  member  of a
committee,  the  member  or  members  thereof  present  at any  meeting  and not
disqualified  from voting,  whether or not he or they  constitute a quorum,  may
unanimously  appoint  another  member  of the Board of  Directors  to act at the
meeting  in the  place of any such  absent  or  disqualified  member.  Each such
committee  shall  have such name as may be  determined  from time to time by the
Board of Directors.

                  SECTION  2.11.  COMPENSATION.  No director  shall  receive any
stated  salary for his services as a director or as a member of a committee  but
shall  receive such sum, if any, as may from time to time be fixed by the action
of a majority of the stockholders.


                                   ARTICLE III

                                    OFFICERS

                  SECTION  3.1.  ELECTION;  QUALIFICATION.  The  officers of the
Corporation  shall be a Chairman  of the Board,  a  President,  one or more Vice
Presidents,  a Secretary and a Treasurer,  each of whom shall be selected by the
Board of Directors.  The Board of Directors may elect a Controller,  one or more
Assistant Secretaries,  one or more Assistant Treasurers,  one or more Assistant
Controllers and such other officers as it may from time to time  determine.  Two
or more offices may be held by the same person.


                                       -6-

<PAGE>
                  SECTION 3.2.  TERM OF OFFICE.  Each officer  shall hold office
from the  time of his  election  and  qualification  to the  time at  which  his
successor  is elected and  qualified,  unless he shall die or resign or shall be
removed pursuant to Section 3.4 at any time sooner.

                  SECTION 3.3.  RESIGNATION.  Any officer of the Corporation may
resign at any time by giving written notice of such  resignation to the Board of
Directors,  the Chairman of the Board,  the  President  or the  Secretary of the
Corporation.  Any such  resignation  shall  take  effect  at the time  specified
therein  or,  if no time be  specified,  upon  receipt  thereof  by the Board of
Directors or one of the above-named officers; and, unless specified therein, the
acceptance of such resignation shall not be necessary to make it effective.

                  SECTION 3.4. REMOVAL.  Any officer may be removed at any time,
with or without cause, by the vote of two directors if there are three directors
or less,  or the vote of a majority of the whole Board of Directors if there are
more than three directors.

                  SECTION  3.5.  VACANCIES.  Any vacancy  however  caused in any
office of the Corporation may be filled by the Board of Directors.

                  SECTION 3.6.  COMPENSATION.  The  compensation of each officer
shall be such as the Board of Directors may from time to time determine.

                  SECTION 3.7.  CHAIRMAN OF THE BOARD. The Chairman of the Board
shall preside at all meetings of the Board of Directors and of the shareholders,
and shall  have such  powers and  duties as  generally  pertain to the office of
Chairman of the Board, subject to the direction of the Board of Directors.

                  SECTION  3.8.  PRESIDENT.  The  President  shall be the  chief
executive  officer  of the  Corporation  and shall  have  general  charge of the
business  and affairs of the  Corporation,  subject  however to the right of the
Board of Directors to confer specified powers on officers and subject  generally
to the direction of the Board of Directors.

                  SECTION 3.9. VICE  PRESIDENT.  Each Vice President  shall have
such powers and duties as generally  pertain to the office of Vice President and
as the Board of  Directors  or the  President  may from time to time  prescribe.
During the absence of the president or his inability to act, the Vice President,
or if there shall be more than one Vice  President,  then that one designated by
the Board of Directors,  shall  exercise the powers and shall perform the duties
of the  President,  subject to the  direction of the Board of Directors  and the
Executive Committee, if any.

                  SECTION 3.10. SECRETARY.  The Secretary shall keep the minutes
of all  meetings  of  stockholders  and of the Board of  Directors.  He shall be
custodian of the corporate seal and shall

                                       -7-

<PAGE>
affix it or cause it to be affixed to such  instruments as require such seal and
attest  the same and shall  exercise  the powers  and shall  perform  the duties
incident to the office of  Secretary,  subject to the  direction of the Board of
Directors and the Executive Committee, if any.

                  SECTION  3.11.  OTHER  OFFICERS.  Each  other  officer  of the
Corporation  shall exercise the powers and shall perform the duties  incident to
his office, subject to the direction of the Board of Directors and the Executive
Committee, if any.


                                   ARTICLE IV

                                  CAPITAL STOCK

                  SECTION 4.1. STOCK  CERTIFICATES.  The interest of each holder
of stock of the Corporation  shall be evidenced by a certificate or certificates
in such form as the Board of  Directors  may from time to time  prescribe.  Each
certificate shall be signed by or in the name of the Corporation by the Chairman
of the Board,  the  President  or a Vice  President  and by the  Treasurer or an
Assistant  Treasurer or the Secretary or an Assistant  Secretary.  Any of or all
the signatures appearing on such certificate or certificates may be a facsimile.
If any officer,  transfer  agent or registrar who has signed or whose  facsimile
signature  has been  placed  upon a  certificate  shall  have  ceased to be such
officer,  transfer agent or registrar before such certificate is issued,  it may
be issued by the  Corporation  with the same effect as if he were such  officer,
transfer agent or registrar at the date of issue.

                  SECTION  4.2.  TRANSFER  OF STOCK.  Shares  of stock  shall be
transferable on the books of the Corporation pursuant to applicable law and such
rules  and  regulations  as the  Board  of  Directors  shall  from  time to time
prescribe.

                  SECTION 4.3.  HOLDERS OF RECORD.  Prior to due presentment for
registration  of transfer  the  Corporation  may treat the holder of record of a
share of its stock as the complete owner thereof  exclusively  entitled to vote,
to receive  notifications and otherwise entitled to all the rights and powers of
a complete owner thereof, notwithstanding notice to the contrary.

                  SECTION   4.4.   LOST,   STOLEN,    DESTROYED   OR   MUTILATED
CERTIFICATES.  The Corporation shall issue a new certificate of stock to replace
a certificate  theretofore issued by it alleged to have been lost,  destroyed or
wrongfully  taken,  if  the  owner  or his  legal  representative  (i)  requests
replacement,  before the Corporation  has notice that the stock  certificate has
been acquired by a bona fide  purchaser;  (ii) files with the Corporation a bond
sufficient  to  indemnify  the  Corporation  against  any claim that may be made
against it on  account  of the  alleged  loss or  destruction  of any such stock
certificate  or the  issuance  of any  such new  stock  certificate;  and  (iii)
satisfies  such other terms and  conditions  as the Board of Directors  may from
time to time prescribe.

                                       -8-

<PAGE>
                                    ARTICLE V

                                  MISCELLANEOUS

                  SECTION 5.1.  INDEMNITY.  (a) The Corporation shall indemnify,
subject to the  requirements  of subsection (d) of this Section,  any person who
was or is a party or is threatened to be made a party to any threatened, pending
or completed action, suit or proceeding, whether civil, criminal, administrative
or investigative  (other than an action by or in the right of the  Corporation),
by reason of the fact that he is or was a director,  officer,  employee or agent
of the Corporation,  or is or was serving at the request of the Corporation as a
director, officer, employee or agent of another corporation,  partnership, joint
venture,  trust or other  enterprise,  against  expenses  (including  attorneys'
fees),  judgments,  fines and amounts paid in settlement actually and reasonably
incurred by him in connection  with such action,  suit or proceeding if he acted
in good faith and in a manner he reasonably  believed to be in or not opposed to
the best interests of the  Corporation  and, with respect to any criminal action
or proceeding,  had no reasonable cause to believe his conduct was unlawful. The
termination of any action,  suit or proceeding by judgment,  order,  settlement,
conviction or upon a plea of nolo  contendere or its  equivalent,  shall not, of
itself,  create a presumption that the person did not act in good faith and in a
manner  which  he  reasonably  believed  to be in or not  opposed  to  the  best
interests  of the  Corporation  and,  with  respect  to any  criminal  action or
proceeding, had reasonable cause to believe that his conduct was unlawful.

                           (b) The Corporation  shall indemnify,  subject to the
requirements of subsection (d) of this Section, any person who was or is a party
or is  threatened  to be made a party to any  threatened,  pending or  completed
action or suit by or in the right of the  Corporation  to procure a judgment  in
its favor by reason of the fact that he is or was a director,  officer, employee
or  agent  of  the  Corporation  or is or was  serving  at  the  request  of the
Corporation as a director,  officer,  employee or agent of another  corporation,
partnership,   joint  venture,  trust  or  other  enterprise,  against  expenses
(including   attorneys'  fees)  actually  and  reasonably  incurred  by  him  in
connection  with the defense or settlement of such action or suit if he acted in
good faith and in a manner he reasonably believed to be in or not opposed to the
best interests of the  Corporation and except that no  indemnification  shall be
made in respect of any claim, issue or matter as to which such person shall have
been adjudged to be liable to the Corporation unless and only to the extent that
the Court of Chancery of the State of Delaware or the court in which such action
or  suit  was  brought  shall  determine  upon  application  that,  despite  the
adjudication of liability but in view of all the circumstances of the case, such
person is fairly and  reasonably  entitled to indemnity for such expenses  which
the Court of  Chancery  of the State of  Delaware or such other court shall deem
proper.


                                       -9-

<PAGE>
                           (c) To the extent that a director,  officer, employee
or agent of the Corporation,  or a person serving in any other enterprise at the
request of the  Corporation,  has been  successful on the merits or otherwise in
defense of any action,  suit or proceeding referred to in subsection (a) and (b)
of this  Section,  or in  defense  of any claim,  issue or matter  therein,  the
Corporation  shall indemnify him against  expenses  (including  attorneys' fees)
actually and reasonably incurred by him in connection therewith.

                           (d) Any indemnification under subsections (a) and (b)
of this Section  (unless  ordered by a court)  shall be made by the  Corporation
only  as   authorized   in  the  specific   case  upon  a   determination   that
indemnification  of the  director,  officer,  employee or agent is proper in the
circumstances because he has met the applicable standard of conduct set forth in
subsections (a) and (b) of this Section. Such determination shall be made (1) by
a majority  vote of the  directors  who are not parties to such action,  suit or
proceeding,  even  though  less  than a  quorum,  or (2) if  there  are no  such
directors,  or if such directors so direct,  by  independent  legal counsel in a
written opinion, or (3) by the Stockholders.

                           (e)  Expenses   incurred  by  a  director,   officer,
employee or agent in defending a civil or criminal  action,  suit or  proceeding
may be paid by the  Corporation  in  advance  of the final  disposition  of such
action,  suit or proceeding as authorized by the Board of Directors upon receipt
of an undertaking by or on behalf of the director, officer, employee or agent to
repay such amount if it shall  ultimately be determined  that he is not entitled
to be indemnified by the Corporation as authorized in this Section.

                           (f) The  indemnification  and advancement of expenses
provided by or granted pursuant to, the other  subsections of this Section shall
not  limit  the  Corporation  from  providing  any  other   indemnification   or
advancement of expenses permitted by law nor shall it be deemed exclusive of any
other rights to which those seeking  indemnification  may be entitled  under any
by-law, agreement, vote of stockholders or disinterested directors or otherwise,
both as to action in his official  capacity and as to action in another capacity
while holding such office.

                           (g)  The   Corporation   may  purchase  and  maintain
insurance on behalf of any person who is or was a director, officer, employee or
agent  of  the  Corporation,  or who is or was  serving  at the  request  of the
Corporation as a director,  officer,  employee or agent of another  corporation,
partnership,  joint  venture,  trust or other  enterprise  against any liability
asserted against him and incurred by him in any such capacity, or arising out of
his  status as such,  whether  or not the  Corporation  would  have the power to
indemnify him against such liability under the provisions of this Section.

                           (h) The  indemnification  and advancement of expenses
provided by, or granted pursuant to this section shall, unless

                                      -10-

<PAGE>
otherwise provided when authorized or ratified,  continue as to a person who has
ceased to be a  director,  officer,  employee  or agent  and shall  inure to the
benefit of the heirs, executors and administrators of such a person.

                           (i) For the purposes of this  Section,  references to
"the Corporation" shall include, in addition to the resulting  corporation,  any
constituent corporation (including any constituent of a constituent) absorbed in
a consolidation or merger which, if its separate existence had continued,  would
have had power and authority to indemnify its directors,  officers, employees or
agents, so that any person who is or was a director,  officer, employee or agent
of such  constituent  corporation,  or is or was  serving at the request of such
constituent  corporation  as a director,  officer,  employee or agent of another
corporation,  partnership, joint venture, trust or other enterprise, shall stand
in the same  position  under the  provisions of this Section with respect to the
resulting  or  surviving  corporation  as he would  have  with  respect  to such
constituent corporation if its separate existence had continued.

                           (j) This  Section 5.1 shall be  construed to give the
Corporation the broadest power  permissible by the Delaware General  Corporation
Law, as it now stands and as heretofore amended.

                  SECTION 5.2. WAIVER OF NOTICE.  Whenever notice is required by
the  Certificate of  Incorporation,  the By-Laws or any provision of the General
Corporation Law of the State of Delaware,  a written waiver  thereof,  signed by
the person  entitled to notice,  whether  before or after the time  required for
such notice,  shall be deemed equivalent to notice.  Attendance of a person at a
meeting  shall  constitute a waiver of notice of such  meeting,  except when the
person attends a meeting for the express purpose of objecting,  at the beginning
of the meeting,  to the  transaction of any business  because the meeting is not
lawfully  called or convened.  Neither the business to be transacted at, nor the
purpose of, any regular or special  meeting of the  stockholders,  directors  or
members of a committee of directors  need be specified in any written  waiver of
notice.

                  SECTION 5.3.  FISCAL YEAR. The fiscal year of the  Corporation
shall  start on such  date as the  Board of  Directors  shall  from time to time
prescribe.

                  SECTION 5.4.  CORPORATE  SEAL.  The corporate seal shall be in
such form as the Board of  Directors  may from time to time  prescribe,  and the
same may be used by causing it or a facsimile thereof to be impressed or affixed
or in any other manner reproduced.


                                      -11-

<PAGE>
                                   ARTICLE VI

                              AMENDMENT OF BY-LAWS

                  SECTION 6.1. AMENDMENT. The By-Laws may be altered, amended or
repealed by the stockholders or by the Board of Directors by a majority vote.



                                      -12-




                         Independent Auditors' Consent



The Board of Directors
GST Network Funding, Inc.:

We consent to the use of our report,  dated April 16, 1998,  included  herein in
the  Registration   Statement  on  Form  S-4,  dated  August  4,  1998,  of  GST
Telecommunications, Inc., GST USA, Inc. and GST Network Funding, Inc. and to the
references to our firm under the "Experts" heading in the Prospectus.



/s/ KPMG PEAT MARWICK LLP

Portland, Oregon
August 4, 1998


                         Independent Auditors' Consent



The Board of Directors
GST USA, Inc.:

We consent to the use of our report,  dated  February  25, 1998 and November 26,
1997.  incorporated  herein by reference in the  Registration  Statement on Form
S-4,  dated August 4, 1998, of GST  Telecommunications,  Inc., GST USA, Inc. and
GST Network Funding,  Inc. and to the references to our firm under the "Experts"
heading in the Prospectus.



/s/ KPMG PEAT MARWICK LLP

Portland, Oregon
August 4, 1998


                         Independent Auditors' Consent



The Board of Directors
GST Telecommunications, Inc.:

We consent to the use of our report,  dated  February  25, 1998 and November 26,
1997, incorpoated herein by reference in the Registration Statement on Form S-4,
dated August 4, 1998,  of GST  Telecommunications,  Inc.,  GST USA, Inc. and GST
Network  Funding,  Inc. and to the  references  to our firm under the  "Experts"
heading in the Prospectus.



/s/ KPMG PEAT MARWICK LLP

Portland, Oregon
August 4, 1998


                                    FORM T-1
                 ==============================================

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                               ------------------
                            STATEMENT OF ELIGIBILITY
                    UNDER THE TRUST INDENTURE ACT OF 1939 OF
                   A CORPORATION DESIGNATED TO ACT AS TRUSTEE
                               ------------------

                      CHECK IF AN APPLICATION TO DETERMINE
                      ELIGIBILITY OF A TRUSTEE PURSUANT TO
                            SECTION 305(b)(2) _______
                               ------------------

                     UNITED STATES TRUST COMPANY OF NEW YORK
               (Exact name of trustee as specified in its charter)

                               New York 13-3818954
                 (Jurisdiction of incorporation (I.R.S. employer
                if not a U.S. national bank) identification No.)

                         114 West 47th Street 10036-1532
                             New York, NY (Zip Code)
                              (Address of principal
                               executive offices)
                               ------------------
                            GST NETWORK FUNDING, INC.
                                  GST USA, INC.
                          GST TELECOMMUNICATIONS, INC.
              (Exact name of obligors as specified in its charter)

        Delaware                              13-4001870
        Delaware                               83-0310464
        Canada                               Not Applicable
(State or other jurisdiction of             (I.R.S. employer
incorporation or organization)             identification No.)

                            GST Network Funding, Inc.
                                  GST USA, Inc.
                          GST Telecommunications, Inc.
                                4001 Main Street
                           Vancouver, Washington 98663
                    (Address of principal executive offices)
                               ------------------
             10 1/2% Senior Secured Discount Exchange Notes Due 2008
                       (Title of the indenture securities)
                 ==============================================


<PAGE>
                                      - 2 -


                                     GENERAL


1.  GENERAL INFORMATION

    Furnish the following information as to the trustee:

    (a)  Name and address of each examining or supervising authority to which
         it is subject.

           Federal Reserve Bank of New York (2nd  District),  New York, New York
                        (Board of Governors of the Federal Reserve System)
           Federal Deposit Insurance Corporation, Washington, D.C.
           New York State Banking Department, Albany, New York

    (b)  Whether it is authorized to exercise corporate trust powers.

         The trustee is authorized to exercise corporate trust powers.

2.  AFFILIATIONS WITH THE OBLIGOR

    If  the  obligor  is  an  affiliate  of  the  trustee,  describe  each  such
    affiliation.

                 None

3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 and 15:

    GST Network Funding,  Inc., GST USA, Inc. and GST  Telecommunications,  Inc.
    are not in  default  under  any of their  outstanding  securities  for which
    United States Trust Company of New York is Trustee.  Accordingly,  responses
    to Items 3, 4, 5, 6, 7, 8, 9, 10,  11, 12, 13, 14 and 15 of Form T-1 are not
    required under General Instruction B.


16. LIST OF EXHIBITS

    T-1.1--       Organization  Certificate,  as amended, issued by the State of
                  New York Banking  Department  to transact  business as a Trust
                  Company, is incorporated by reference to Exhibit T-1.1 to Form
                  T-1 filed on September 15, 1995 with the  Commission  pursuant
                  to the Trust  Indenture  Act of 1939,  as amended by the Trust
                  Indenture Reform Act of 1990 (Registration No. 33-97056).

    T-1.2--       Included in Exhibit T-1.1.

    T-1.3--       Included in Exhibit T-1.1.


<PAGE>
                                      - 3 -


16. LIST OF EXHIBITS
    (CONT'D)

    T-1.4  --     The By-Laws of United  States  Trust  Company of New York,  as
                  amended, is incorporated by reference to Exhibit T-1.4 to Form
                  T-1 filed on September 15, 1995 with the  Commission  pursuant
                  to the Trust  Indenture  Act of 1939,  as amended by the Trust
                  Indenture Reform Act of 1990 (Registration No. 33-97056).

    T-1.6  --     The consent of the trustee  required by Section  321(b) of the
                  Trust Indenture Act of 1939, as amended by the Trust Indenture
                  Reform Act of 1990.

    T-1.7  --     A copy  of the  latest  report  of  condition  of the  trustee
                  pursuant  to law or the  requirements  of its  supervising  or
                  examining authority.

NOTE

As of  July  13,  1998,  the  trustee  had  2,999,020  shares  of  Common  Stock
outstanding,  all  of  which  are  owned  by  its  parent  company,  U.S.  Trust
Corporation. The term "trustee" in Item 2, refers to each of United States Trust
Company of New York and its parent company, U. S. Trust Corporation.

In answering Item 2 in this  statement of  eligibility as to matters  peculiarly
within the  knowledge  of the obligor or its  directors,  the trustee has relied
upon information  furnished to it by the obligor and will rely on information to
be furnished  by the obligor and the trustee  disclaims  responsibility  for the
accuracy or completeness of such information.

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

Pursuant to the  requirements  of the Trust  Indenture Act of 1939, the trustee,
United States Trust  Company of New York, a  corporation  organized and existing
under the laws of the State of New  York,  has duly  caused  this  statement  of
eligibility  to be  signed  on its  behalf by the  undersigned,  thereunto  duly
authorized,  all in the City of New York, and State of New York, on the 13th day
of July, 1998.

UNITED STATES TRUST COMPANY
            OF NEW YORK, Trustee

By: /s/ Louis P. Young
    ----------------------
        Louis P. Young
        Vice President


<PAGE>
                                                                   EXHIBIT T-1.6

        The consent of the trustee required by Section 321(b) of the Act.

                     United States Trust Company of New York
                              114 West 47th Street
                               New York, NY 10036


January 7, 1997



Securities and Exchange Commission
450 5th Street, N.W.
Washington, DC  20549

Gentlemen:

Pursuant to the provisions of Section 321(b) of the Trust Indenture Act of 1939,
as  amended  by the Trust  Indenture  Reform  Act of 1990,  and  subject  to the
limitations  set forth  therein,  United States Trust Company of New York ("U.S.
Trust") hereby  consents that reports of  examinations of U.S. Trust by Federal,
State,  Territorial or District authorities may be furnished by such authorities
to the Securities and Exchange Commission upon request therefor.




Very truly yours,


UNITED STATES TRUST COMPANY
            OF NEW YORK



By:  /S/Gerard F. Ganey
     ----------------------
     Senior Vice President


<PAGE>
                                                                   EXHIBIT T-1.7

                     UNITED STATES TRUST COMPANY OF NEW YORK
                       CONSOLIDATED STATEMENT OF CONDITION
                                 MARCH 31, 1998
                                ($ IN THOUSANDS)

ASSETS
Cash and Due from Banks                                               $  303,692

Short-Term Investments                                                   325,044

Securities, Available for Sale                                           650,954

Loans                                                                  1,717,101
Less:  Allowance for Credit Losses                                        16,546
        Net Loans                                                      1,700,555
                                                                      ----------
Premises and Equipment                                                    58,868
Other Assets                                                             120,865
                                                                      ----------
        TOTAL ASSETS                                                  $3,159,978
                                                                      ==========

LIABILITIES
Deposits:
        Non-Interest Bearing                                          $  602,769
        Interest Bearing                                               1,955,571
                                                                      ----------
           Total Deposits                                              2,558,340

Short-Term Credit Facilities                                             293,185
Accounts Payable and Accrued Liabilities                                 136,396
                                                                      ----------
        TOTAL LIABILITIES                                             $2,987,921
                                                                      ==========
STOCKHOLDER'S EQUITY
Common Stock                                                              14,995
Capital Surplus                                                           49,541
Retained Earnings                                                        105,214
Unrealized Gains on Securities
     Available for Sale (Net of Taxes)                                     2,307
                                                                      ----------
TOTAL STOCKHOLDER'S EQUITY                                               172,057
    TOTAL LIABILITIES AND                                             ----------
     STOCKHOLDER'S EQUITY                                             $3,159,978
                                                                      ==========

I, Richard E.  Brinkmann,  Senior Vice President & Comptroller of the named bank
do  hereby  declare  that this  Statement  of  Condition  has been  prepared  in
conformance with the instructions issued by the appropriate regulatory authority
and is true to the best of my knowledge and belief.

Richard E. Brinkmann, SVP & Controller

May 6, 1998


                              LETTER OF TRANSMITTAL
                                       FOR
                            TENDER OF ALL OUTSTANDING
                 10 1/2% SENIOR SECURED DISCOUNT NOTES DUE 2008
                                 IN EXCHANGE FOR
             10 1/2% SENIOR SECURED DISCOUNT EXCHANGE NOTES DUE 2008
                                       OF
                            GST NETWORK FUNDING, INC.

                  THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M.,
         NEW YORK CITY TIME, ON ________, ___________________, 1998 (THE
                               "EXPIRATION DATE"),
                  UNLESS EXTENDED BY GST NETWORK FUNDING, INC.

                                 EXCHANGE AGENT:

                     UNITED STATES TRUST COMPANY OF NEW YORK

<TABLE>
<CAPTION>

BY MAIL:                     BY OVERNIGHT COURIER:        BY HAND:                              BY FACSIMILE:

<S>                          <C>                          <C>                                   <C> 
United States Trust          United States Trust          United States Trust                   fax no. (212) 780-0592
  Company of New York          Company of New York          Company of New York                 (For Eligible Institutions
P.O. Box 844                 770 Broadway - 13th Floor    111 Broadway                          Only)
Cooper Station               Corporate Trust Operations   Lower Level
New York, NY 10276-0844        Department                 New York, NY 10006                    CONFIRM BY TELEPHONE:
                             New York, NY 10003           Attn:  Corporate Trust Services       telephone no. (800) 548-6565
</TABLE>

(registered or certified mail
recommended)

         DELIVERY OF THIS LETTER OF  TRANSMITTAL TO AN ADDRESS OTHER THAN AS SET
FORTH ABOVE OR TRANSMISSION OF  INSTRUCTIONS  VIA A FACSIMILE  TRANSMISSION TO A
NUMBER OTHER THAN AS SET FORTH ABOVE WILL NOT CONSTITUTE A VALID DELIVERY.

         The   undersigned   acknowledges   receipt  of  the  Prospectus   dated
___________,  1998  (the  "Prospectus")  of  GST  Network  Funding,  Inc.  ("GST
Funding"),  GST USA, Inc. ("GST USA") and GST  Telecommunications,  Inc. ("GST")
which,  together with this Letter of Transmittal (the "Letter of  Transmittal"),
constitute  GST Funding's  offer (the  "Exchange  Offer") to exchange  $1,000 in
principal  amount at maturity of a new series of 10 1/2% Senior Secured Discount
Exchange Notes Due 2008 (the "New Notes") of GST Funding,  which,  under certain
circumstances,  may be assumed by GST USA and guaranteed by GST, for each $1,000
in principal  amount at maturity of outstanding 10 1/2% Senior Secured  Discount
Notes  Due  2008  (the  "Old  Notes")  of  GST  Funding,  which,  under  certain
circumstances, may be assumed by GST USA and guaranteed by GST. The terms of the
New Notes are  identical in all material  respects to the terms of the Old Notes
for which they may be exchanged pursuant to the Exchange Offer,  except that the
offer and sale of the New Notes will have been registered under the Securities


<PAGE>
Act of 1933, as amended (the "Securities  Act"), and,  therefore,  the New Notes
will not bear legends restricting the transfer thereof.

         The undersigned has checked the appropriate boxes below and signed this
Letter of  Transmittal  to indicate the action the  undersigned  desires to take
with respect to the Exchange Offer.

         PLEASE  READ  THE  ENTIRE  LETTER  OF  TRANSMITTAL  AND THE  PROSPECTUS
CAREFULLY BEFORE CHECKING ANY BOX BELOW.

         THE  INSTRUCTIONS  INCLUDED  WITH THIS  LETTER OF  TRANSMITTAL  MUST BE
FOLLOWED.  QUESTIONS AND REQUESTS FOR ASSISTANCE OR FOR ADDITIONAL COPIES OF THE
PROSPECTUS AND THIS LETTER OF TRANSMITTAL MAY BE DIRECTED TO THE EXCHANGE AGENT.

         List below the Old Notes to which this Letter of Transmittal relates.
If the space provided below is inadequate, the Certificate Numbers and Principal
Amounts at Maturity should be listed on a separate signed schedule affixed
hereto.

================================================================================
                   DESCRIPTION OF OLD NOTES TENDERED HEREWITH
================================================================================
Name(s) and address(es) of    Certificate    Aggregate          Principal Amount
Registered Holder(s)          Number(s)      Principal Amount   at Maturity
(Please fill in)                             at Maturity        Tendered*
                                             Represented by
                                             Notes





                                             -----------------------------------
                              Total          $                  $
                              ==================================================

*       Unless otherwise indicated,  the holder will be deemed to have tendered
         the full  aggregate  principal  amount at maturity  represented  by Old
         Notes. See Instruction 2.

         This Letter of Transmittal is to be used if certificates for Old Notes
are to be forwarded herewith.


                                       -2-

<PAGE>
         Unless the context requires  otherwise,  the term "Holder" for purposes
of this  Letter  of  Transmittal  means any  person in whose  name Old Notes are
registered or any other person who has obtained a properly  completed bond power
from the registered holder.

         Holders  whose Old Notes are not  immediately  available  or who cannot
deliver their Old Notes and all other documents  required hereby to the Exchange
Agent on or prior to the Expiration Date may tender their Old Notes according to
the guaranteed  delivery procedure set forth in the Prospectus under the caption
"The Exchange Offer--Procedures for Tendering."

/ /      CHECK HERE IF  TENDERED  OLD NOTES ARE BEING  DELIVERED  PURSUANT  TO A
         NOTICE OF GUARANTEED DELIVERY AND COMPLETE THE FOLLOWING:

         Name of Registered Holder(s):__________________________________________

         Name of Eligible Institution that Guaranteed Delivery:_________________

/ /      CHECK HERE IF YOU ARE A BROKER-DEALER AND WISH TO RECEIVE 10 ADDITIONAL
         COPIES OF THE PROSPECTUS AND 10 COPIES OF ANY AMENDMENTS OR SUPPLEMENTS
         THERETO.

         Name:__________________________________________________________________

         Address:_______________________________________________________________


                                       -3-

<PAGE>
               PLEASE READ THE ACCOMPANYING INSTRUCTIONS CAREFULLY

Ladies and Gentlemen:

         Upon the terms and subject to the conditions of the Exchange Offer, the
undersigned hereby tenders to GST Funding the  above-described  principal amount
at maturity of Old Notes.  Subject to, and effective  upon,  the  acceptance for
exchange of the Old Notes tendered  herewith,  the undersigned hereby exchanges,
assigns and  transfers  to, or upon the order of, GST Funding  right,  title and
interest  in  and  to  such  Old  Notes.  The  undersigned   hereby  irrevocably
constitutes  and appoints  the  Exchange  Agent as the true and lawful agent and
attorney-in-fact  of the  undersigned  (with full  knowledge  that said Exchange
Agent  acts as the agent of the  undersigned  in  connection  with the  Exchange
Offer) to cause the Old Notes to be assigned,  transferred  and  exchanged.  The
undersigned  represents  and  warrants  that it has full power and  authority to
tender,  exchange,  assign and  transfer  the Old Notes and to acquire New Notes
issuable upon the exchange of such tendered Old Notes,  and that,  when the same
are accepted for exchange,  GST Funding will acquire good and unencumbered title
to the tendered Old Notes,  free and clear of all liens,  restrictions,  charges
and  encumbrances  and not subject to any adverse claim.  The  undersigned  also
warrants  that it  will,  upon  request,  execute  and  deliver  any  additional
documents  deemed  by the  Exchange  Agent or GST  Funding  to be  necessary  or
desirable  to complete  the  exchange,  assignment  and transfer of tendered Old
Notes.

         The Exchange Offer is subject to certain conditions as set forth in the
Prospectus  under the caption  "Exchange  Offer --  Conditions  to the  Exchange
Offer." The undersigned  recognizes that as a result of these conditions  (which
may be waived,  in whole or in part,  by GST Funding) as more  particularly  set
forth in the Prospectus,  GST Funding may not be required to exchange any of the
Old Notes tendered  hereby and, in such event,  the Old Notes not exchanged will
be returned to the  undersigned  at the address shown below the signature of the
undersigned.

         By  tendering,  each Holder of Old Notes  represents to GST Funding and
GST that (i) the New Notes  acquired  pursuant to the  Exchange  Offer are being
obtained in the  ordinary  course of business of the person  receiving  such New
Notes, whether or not such person is such Holder, (ii) neither the Holder of Old
Notes nor any such other person has an  arrangement  or  understanding  with any
person to participate in the distribution of such New Notes, (iii) if the Holder
is not a broker-dealer or is a broker-dealer  but will not receive New Notes for
its own account in exchange for Old Notes, neither the Holder nor any such other
person is  engaged in or intends to  participate  in a  distribution  of the New
Notes and (iv) neither the Holder nor any such other person is an "affiliate" of
GST Funding,  GST USA or GST within the meaning of Rule 405 under the Securities
Act or, if such Holder is such an "affiliate," that such Holder will comply with
the registration and prospectus  delivery  requirements of the Securities Act to
the extent  applicable.  If the tendering Holder is a broker-dealer  (whether or
not it is also an "affiliate" of GST Funding,  GST USA or GST within the meaning
of Rule 405 under the  Securities  Act) that will  receive New Notes for its own
account  in  exchange  for Old  Notes,  it  represents  that the Old Notes to be
exchanged  for the New Notes were  acquired  by it as a result of  market-making
activities or other trading activities, and acknowledges that it will deliver a

                                       -4-

<PAGE>
prospectus meeting the requirements of the Securities Act in connection with any
resale  of  such  New  Notes.  By  acknowledging  that it  will  deliver  and by
delivering  a  prospectus  meeting the  requirements  of the  Securities  Act in
connection  with any resale of such New Notes,  the undersigned is not deemed to
admit that it is an "underwriter" within the meaning of the Securities Act.

         All authority  herein conferred or agreed to be conferred shall survive
the death,  bankruptcy or incapacity of the undersigned and every  obligation of
the   undersigned   hereunder   shall  be  binding  upon  the  heirs,   personal
representatives,  successors and assigns of the undersigned.  Tendered Old Notes
may be  withdrawn  at any time  prior to 5:00  p.m.,  New York  City time on the
business day prior to the Expiration Date.

         Certificates  for all New Notes  delivered in exchange for tendered Old
Notes and any Old  Notes  delivered  herewith  but not  exchanged,  in each case
registered in the name of the undersigned, shall be delivered to the undersigned
at the address shown below the signature of the undersigned.

         (SIGNATURE(S) ON FOLLOWING PAGE)


                                       -5-

<PAGE>
                          TENDERING HOLDER(S) SIGN HERE


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

- ------------------------------------------------------------------------------
                            Signature(s) of Holder(s)

Dated:               , 1998

(Must be  signed  by  registered  Holder(s)  exactly  as  name(s)  appear(s)  on
certificate(s) for Old Notes or by any person(s) authorized to become registered
Holder(s) by endorsements and documents  transmitted herewith. If signature by a
trustee,  executor,  administrator,  guardian,  attorney-in-fact,  officer  of a
corporation  or other person acting in a fiduciary or  representative  capacity,
please set forth the full title of such person.) See Instruction 3.

Name(s):________________________________________________________________________

- --------------------------------------------------------------------------------
                                 (Please Print)

Capacity (full title):__________________________________________________________

Address:________________________________________________________________________

- --------------------------------------------------------------------------------
                              (Including Zip Code)

Area Code and Telephone No.: ___________________________________________________

- --------------------------------------------------------------------------------
                             Tax Identification No.



                                       -6-

<PAGE>
                            GUARANTEE OF SIGNATURE(S)
                       (IF REQUIRED -- SEE INSTRUCTION 3)


Authorized
Signature:______________________________________________________________________

Name:___________________________________________________________________________

Title:__________________________________________________________________________

Address:________________________________________________________________________

Name of Firm:___________________________________________________________________

Area Code and Telephone No.:____________________________________________________

Dated: __________________, 1998


                                       -7-

<PAGE>
                                  INSTRUCTIONS

                    FORMING PART OF THE TERMS AND CONDITIONS
                              OF THE EXCHANGE OFFER

         1.   DELIVERY  OF  THIS  LETTER  OF   TRANSMITTAL   AND   CERTIFICATES.
Certificates  for all  physically  delivered  Old  Notes,  as well as a properly
completed  and duly  executed  copy of this Letter of  Transmittal  or facsimile
thereof, and any other documents required by this Letter of Transmittal, must be
received by the Exchange  Agent at any of its  addresses  set forth herein on or
prior to the Expiration Date.

         THE METHOD OF DELIVERY OF THIS LETTER OF TRANSMITTAL, THE OLD NOTES AND
ANY OTHER  REQUIRED  DOCUMENTS  IS AT THE  ELECTION  AND RISK OF THE HOLDER AND,
EXCEPT AS OTHERWISE  PROVIDED BELOW,  THE DELIVERY WILL BE DEEMED MADE ONLY WHEN
ACTUALLY  RECEIVED BY THE  EXCHANGE  AGENT.  INSTEAD OF DELIVERY BY MAIL,  IT IS
RECOMMENDED THAT HOLDERS USE AN OVERNIGHT OR HAND DELIVERY SERVICE.

         Holders  whose Old Notes are not  immediately  available  or who cannot
deliver their Old Notes and all other  required  documents to the Exchange Agent
on or prior to the  Expiration  Date may tender their Old Notes  pursuant to the
guaranteed  delivery  procedure  set  forth in the  Prospectus  under  "Exchange
Offer--Procedures  for Tendering."  Pursuant to such procedure:  (i) such tender
must  be  made  by or  through  an  Eligible  Institution  (as  defined  in  the
Prospectus);  (ii) on or prior to the  Expiration  Date, the Exchange Agent must
have  received from such  Eligible  Institution a letter,  telegram or facsimile
transmission  setting  forth the name and address of the tendering  Holder,  the
names in which such Old Notes are registered,  and, if possible, the certificate
numbers of the Old Notes to be  tendered;  and (iii) all  tendered  Old Notes as
well as this  Letter of  Transmittal  and all other  documents  required by this
Letter of  Transmittal  must be  received by the  Exchange  Agent  within  three
trading  days after the date of execution  of such  letter,  telex,  telegram or
facsimile  transmission,  all as  provided in the  Prospectus  under the caption
"Exchange Offer -- Procedures for Tendering."

         No alternative,  conditional,  irregular or contingent  tenders will be
accepted.  All tendering Holders, by execution of this Letter of Transmittal (or
facsimile thereof), shall waive any right to receive notice of the acceptance of
the Old Notes for exchange.

         2. PARTIAL TENDERS; WITHDRAWALS.  Tenders of Old Notes will be accepted
in denominations  of $1,000 principal amount at maturity and integral  multiples
in excess thereof.  If less than the entire  principal amount at maturity of Old
Notes  evidenced by a submitted  certificate is tendered,  the tendering  Holder
must fill in the  principal  amount at  maturity  tendered  in the box  entitled
"Principal  Amount at Maturity  Tendered."  A newly issued  certificate  for the
principal  amount at maturity of Old Notes  submitted  but not tendered  will be
sent to such Holder as soon as practicable  after the  Expiration  Date. All Old
Notes  delivered  to the  Exchange  Agent  will be deemed to have been  tendered
unless otherwise indicated.


                                       -8-

<PAGE>
         Tenders of Old Notes  pursuant to the Exchange  Offer are  irrevocable,
except that Old Notes  tendered  pursuant to the Exchange Offer may be withdrawn
at any time prior to 5:00 p.m., New York City time, on the business day prior to
the Expiration Date. To be effective, a written, telegraphic, telex or facsimile
transmission notice of withdrawal must be timely received by the Exchange Agent.
Any such notice of  withdrawal  must  specify the person  named in the Letter of
Transmittal  as having  tendered  Old  Notes to be  withdrawn,  the  certificate
numbers and designation of the Old Notes to be withdrawn,  the principal  amount
at maturity of Old Notes delivered for exchange,  a statement that such a Holder
is withdrawing  its election to have such Old Notes  exchanged,  and the name of
the registered Holder of such Old Notes, and must be signed by the Holder in the
same manner as the original  signature on the Letter of  Transmittal  (including
any required signature guarantees) or be accompanied by evidence satisfactory to
GST  Funding  that the  person  withdrawing  the  tender  has  succeeded  to the
beneficial  ownership of the Old Notes being withdrawn.  The Exchange Agent will
return the properly  withdrawn Old Notes promptly following receipt of notice of
withdrawal.

         3. SIGNATURE ON THIS LETTER OF  TRANSMITTAL;  WRITTEN  INSTRUMENTS  AND
ENDORSEMENTS;  GUARANTEE OF SIGNATURES.  If this Letter of Transmittal is signed
by the registered Holder(s) of the Old Notes tendered hereby, the signature must
correspond  with the  name(s)  as written  on the face of  certificates  without
alteration, enlargement or any change whatsoever.

         If any of the Old Notes  tendered  hereby are owned of record by two or
more joint owners, all such owners must sign this Letter of Transmittal.

         If a number of Old Notes registered in different names are tendered, it
will be necessary to complete,  sign and submit as many separate  copies of this
Letter of Transmittal as there are different registrations of Old Notes.

         When this Letter of Transmittal  is signed by the registered  Holder or
Holders of Old Notes listed and tendered hereby, no endorsements of certificates
or separate written instruments of transfer or exchange are required.

         If this  Letter of  Transmittal  is signed by a person  other  than the
registered  Holder or  Holders of the Old Notes  listed,  such Old Notes must be
endorsed or accompanied by separate written  instruments of transfer or exchange
in form  satisfactory to GST Funding and duly executed by the registered  Holder
or Holders, in either case signed exactly as the name or names of the registered
Holder or Holders appear(s) on the Old Notes.

         If this Letter of Transmittal,  any  certificates  or separate  written
instruments  of  transfer  or  exchange  are  signed  by  trustees,   executors,
administrators, guardians, attorneys-in-fact, officers of corporations or others
acting  in a  fiduciary  or  representative  capacity,  such  persons  should so
indicate  when  signing,  and,  unless  waived by GST Funding,  proper  evidence
satisfactory to GST Funding of their authority to so act must be submitted.


                                       -9-

<PAGE>
         Endorsements  on   certificates  or  signatures  on  separate   written
instruments  of  transfer or exchange  required  by this  Instruction  3 must be
guaranteed by an Eligible Institution.

         Signatures on this Letter of  Transmittal  need not be guaranteed by an
Eligible Institution,  provided the Old Notes are tendered:  (i) by a registered
Holder of such Old Notes; or (ii) for the account of any Eligible Institution.

         4. TRANSFER  TAXES.  GST Funding will pay all transfer  taxes,  if any,
applicable  to the  exchange of Old Notes  pursuant to the Exchange  Offer.  If,
however, certificates representing New Notes, or Old Notes for principal amounts
at maturity not tendered or accepted for  exchange,  are to be delivered  to, or
are to be issued in the name of, any person other than the registered  Holder of
the Old Notes  tendered  hereby,  or if a transfer tax is imposed for any reason
other than the exchange of Old Notes  pursuant to the Exchange  Offer,  then the
amount of any such transfer taxes (whether  imposed on the registered  Holder or
any other  person)  will be payable by the  tendering  Holder.  If  satisfactory
evidence  of payment  of such  taxes or  exemption  therefrom  is not  submitted
herewith,  the amount of such  transfer  taxes will be billed  directly  to such
tendering Holder.

         Except as provided in this  Instruction 4, it will not be necessary for
transfer  tax  stamps to be affixed  to the Old Notes  listed in this  Letter of
Transmittal.

         5. WAIVER OF  CONDITIONS.  GST Funding  reserves the absolute  right to
waive,  in whole or in part,  any of the  conditions  to the Exchange  Offer set
forth in the Prospectus.

         6. MUTILATED,  LOST,  STOLEN OR DESTROYED  NOTES.  Any Holder whose Old
Notes have been mutilated, lost, stolen or destroyed should contact the Exchange
Agent at the address indicated above for further instructions.

         7. REQUESTS FOR ASSISTANCE OR ADDITIONAL COPIES.  Questions relating to
the procedure for tendering,  as well as requests for  additional  copies of the
Prospectus and this Letter of Transmittal, may be directed to the Exchange Agent
at the address and telephone number set forth above. In addition,  all questions
relating to the Exchange Offer, as well as requests for assistance or additional
copies of the Prospectus and this Letter of Transmittal,  may be directed to the
Exchange Agent at the address specified in the Prospectus.

         8. IRREGULARITIES.  All questions as to the validity, form, eligibility
(including  time of receipt),  and  acceptance of Letters of  Transmittal or Old
Notes will be resolved by GST  Funding,  whose  determination  will be final and
binding. GST Funding reserves the absolute right to reject any or all Letters of
Transmittal  or tenders that are not in proper form or the  acceptance  of which
would, in the opinion of GST Funding's  counsel,  be unlawful.  GST Funding also
reserves the right to waive any irregularities or conditions of tender as to the
particular Old Notes covered by any Letter of  Transmittal or tendered  pursuant
to such Letter of  Transmittal.  None of GST Funding,  the Exchange Agent or any
other  person  will be under any duty to give  notification  of any  defects  or
irregularities in tenders or incur any liability for

                                      -10-

<PAGE>
failure to give any such notification. GST Funding's interpretation of the terms
and conditions of the Exchange Offer shall be final and binding.

         9.  DEFINITIONS.  Capitalized  terms used in this Letter of Transmittal
and not otherwise defined have the meanings given in the Prospectus.


         IMPORTANT:  THIS LETTER OF TRANSMITTAL OR A FACSIMILE THEREOF (TOGETHER
WITH CERTIFICATES FOR OLD NOTES AND ALL OTHER REQUIRED DOCUMENTS) OR A NOTICE OF
GUARANTEED  DELIVERY  MUST BE RECEIVED BY THE EXCHANGE  AGENT ON OR PRIOR TO THE
EXPIRATION DATE.


                                      -11-


                           TENDER FOR ALL OUTSTANDING
                 10 1/2% SENIOR SECURED DISCOUNT NOTES DUE 2008
                                 IN EXCHANGE FOR
             10 1/2% SENIOR SECURED DISCOUNT EXCHANGE NOTES DUE 2008
                                       OF
                            GST NETWORK FUNDING, INC.


To Registered Holders:

                  We are enclosing  herewith the material  listed below relating
to the offer (the  "Exchange  Offer") by GST Network  Funding,  Inc., a Delaware
corporation  ("GST  Funding"),  to exchange its 10 1/2% Senior Secured  Discount
Exchange Notes Due 2008 (the "New Notes"),  which, under certain  circumstances,
may  be  assumed  by  GST  USA,   Inc.   ("GST  USA")  and   guaranteed  by  GST
Telecommunications,  Inc., a federally chartered Canadian  corporation  ("GST"),
the offer and sale of which have been  registered  under the  Securities  Act of
1933, as amended (the "Securities Act"), for a like principal amount at maturity
of GST Funding's  issued and  outstanding 10 1/2% Senior Secured  Discount Notes
Due 2008 (the "Old Notes"),  which, under certain circumstances,  may be assumed
by GST USA and  guaranteed by GST, upon the terms and subject to the  conditions
set forth in the Prospectus of GST Funding,  GST USA and GST,  dated  _________,
1998, and the related Letter of Transmittal.

                  Enclosed herewith are copies of the following documents:

         1.       Prospectus dated _________, 1998;

         2.       Letter of Transmittal;

         3.       Notice of Guaranteed Delivery;

         4.       Instruction to Registered Holder from Beneficial Owner; and

         5.       Letter that may be sent to your clients for whose  account you
                  hold Old Notes in your name or in the name of your nominee, to
                  accompany  the  instruction   form  referred  to  above,   for
                  obtaining  such  client's   instruction  with  regard  to  the
                  Exchange Offer.

                  WE URGE YOU TO CONTACT YOUR CLIENTS PROMPTLY. PLEASE NOTE THAT
THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON __________,
_________, 1998, UNLESS EXTENDED.

                  The  Exchange  Offer  is  not  conditioned  upon  any  minimum
principal amount at maturity of Old Notes being tendered.


<PAGE>
                  Pursuant  to the  Letter of  Transmittal,  each  holder of Old
Notes  will  represent  to GST  Funding,  GST USA and GST that (i) the New Notes
acquired  pursuant to the  Exchange  Offer are being  obtained  in the  ordinary
course of business of the person  receiving such New Notes,  whether or not such
person is such  holder,  (ii)  neither  the holder of the Old Notes nor any such
other person has an arrangement or understanding  with any person to participate
in  the  distribution  of  such  New  Notes,  (iii)  if  the  holder  is  not  a
broker-dealer,  or is a broker-dealer but will not receive New Notes for its own
account in exchange for Old Notes,  neither the holder nor any such other person
is engaged in or intends to participate  in a distribution  of the New Notes and
(iv)  neither  the  holder nor any such other  person is an  "affiliate"  of GST
Funding,  GST USA or GST within the meaning of Rule 405 under the Securities Act
or, if such  person is an  "affiliate,"  that such  holder  will comply with the
registration and prospectus  delivery  requirements of the Securities Act to the
extent applicable.  If the tendering holder is a broker-dealer that will receive
New Notes for its own account in exchange for Old Notes,  you will  represent on
behalf  of such  broker-dealer  that the Old Notes to be  exchanged  for the New
Notes  were  acquired  by it as a result of  market-making  activities  or other
trading activities, and acknowledge on behalf of such broker-dealer that it will
deliver  a  prospectus  meeting  the  requirements  of  the  Securities  Act  in
connection  with any resale of such New  Notes.  By  acknowledging  that it will
deliver  and  by  delivering  a  prospectus  meeting  the  requirements  of  the
Securities  Act  in  connection  with  any  resale  of  such  New  Notes,   such
broker-dealer  is not  deemed to admit  that it is an  "underwriter"  within the
meaning of the Securities Act.

                  The enclosed  Instruction to Registered Holder from Beneficial
Owner contains an  authorization  by the beneficial  owners of the Old Notes for
you to make the foregoing representations on their behalf.

                  None  of GST  Funding,  GST  USA or GST  will  pay  any fee or
commission  to any  broker or dealer or to any  other  persons  (other  than the
exchange agent for the Exchange  Offer) in connection  with the  solicitation of
tenders of Old Notes  pursuant to the  Exchange  Offer.  GST Funding will pay or
cause to be paid any transfer  taxes payable on the transfer of Old Notes to it,
except  as  otherwise  provided  in  Instruction  4 of the  enclosed  Letter  of
Transmittal.

                  Additional  copies of the  enclosed  material  may be obtained
from the undersigned.

                                        Very truly yours,



                                        UNITED STATES TRUST COMPANY OF NEW YORK

                                        Exchange Agent




                                       -2-

<PAGE>


NOTHING  CONTAINED HEREIN OR IN THE ENCLOSED  DOCUMENTS SHALL CONSTITUTE YOU THE
AGENT OF GST FUNDING,  GST USA, GST OR UNITED  STATES TRUST COMPANY OF NEW YORK,
OR AUTHORIZE  YOU TO USE ANY  DOCUMENT OR MAKE ANY  STATEMENT ON THEIR BEHALF IN
CONNECTION  WITH THE EXCHANGE OFFER OTHER THAN THE DOCUMENTS  ENCLOSED  HEREWITH
AND THE STATEMENTS CONTAINED THEREIN.




                                       -3-


             INSTRUCTION TO REGISTERED HOLDER FROM BENEFICIAL OWNER
                                       OF
                 10 1/2% SENIOR SECURED DISCOUNT NOTES DUE 2008
                                       OF
                            GST NETWORK FUNDING, INC.

To Registered Holder:

                  The undersigned hereby acknowledges  receipt of the Prospectus
dated  _________,  1998 (the  "Prospectus")  of GST  Network  Funding,  Inc.,  a
Delaware  corporation  ("GST  Funding"),  GST  USA,  Inc.  ("GST  USA")  and GST
Telecommunications,  Inc., a federally chartered Canadian  corporation  ("GST"),
and  accompanying  Letter of  Transmittal  (the "Letter of  Transmittal"),  that
together  constitute  GST  Funding's  offer (the  "Exchange  Offer") to exchange
$1,000 in principal amount at maturity of a new series of 10 1/2% Senior Secured
Discount Exchange Notes Due 2008 (the "New Notes") of GST Funding,  which, under
certain circumstances,  may be assumed by GST USA and guaranteed by GST for each
$1,000 in principal  amount at maturity of  outstanding  10 1/2% Senior  Secured
Discount Notes Due 2008 (the "Old Notes") of GST Funding,  which,  under certain
circumstances,  may be assumed  by GST USA and  guaranteed  by GST.  Capitalized
terms used but not  defined  herein  have the  meanings  ascribed to them in the
Prospectus.

                  This will  instruct  you,  the  registered  holder,  as to the
action to be taken by you relating to the Exchange Offer with respect to the Old
Notes held by you for the account of the undersigned.

                  The aggregate face amount of the Old Notes held by you for the
account of the undersigned is (fill in amount):

                  $__________ of 10 1/2% Senior Secured Discount Notes Due 2008.

                  With respect to the Exchange  Offer,  the  undersigned  hereby
instructs you (check appropriate box):

                  / / To TENDER  the  following  Old  Notes  held by you for the
                  account  of  the  undersigned   (insert  principal  amount  at
                  maturity of Old Notes to be tendered (if any)):

                  $__________ of 10 1/2% Senior Secured Discount Notes Due 2008.

                  / / NOT to TENDER any Old Notes held by you for the account of
                  the undersigned.

                  If the  undersigned  instructs you to tender Old Notes held by
you for the account of the undersigned, it is understood that you are authorized
to make, on behalf of the


<PAGE>
undersigned (and the undersigned,  by its signature below, hereby makes to you),
the representations  and warranties  contained in the Letter of Transmittal that
are to be made with respect to the undersigned as a beneficial owner,  including
but not limited to the representations, that (i) the New Notes acquired pursuant
to the Exchange Offer are being  obtained in the ordinary  course of business of
the undersigned,  (ii) neither the undersigned nor the person receiving such New
Notes (of other than the undersigned)  has an arrangement or understanding  with
any person to participate in the  distribution  of such New Notes,  (iii) if the
undersigned is not a broker-dealer,  or is a broker-dealer  but will not receive
New Notes for its own account in exchange for Old Notes, neither the undersigned
nor any such  other  person is  engaged  in or  intends  to  participate  in the
distribution  of such New Notes and (iv)  neither the  undersigned  nor any such
other person is an "affiliate" of GST Funding, GST USA or GST within the meaning
of Rule 405 under the Securities Act of 1933, as amended (the "Securities Act"),
or, if the undersigned is an "affiliate,"  that the undersigned will comply with
the registration and prospectus  delivery  requirements of the Securities Act to
the extent applicable.  If the undersigned is a broker-dealer (whether or not it
is also an  "affiliate")  that will  receive  New Notes for its own  account  in
exchange for Old Notes,  it  represents  that such Old Notes were  acquired as a
result  of  market-making  activities  or  other  trading  activities,   and  it
acknowledges  that it will deliver a prospectus  meeting the requirements of the
Securities Act in connection with any resale of such New Notes. By acknowledging
that it will deliver and by delivering a prospectus  meeting the requirements of
the  Securities  Act in  connection  with  any  resale  of such New  Notes,  the
undersigned  is not  deemed  to admit  that it is an  "underwriter"  within  the
meaning of the Securities Act.


                                    SIGN HERE


Name of beneficial owner(s) (please print):_____________________________________

Signature(s):___________________________________________________________________

Address:________________________________________________________________________

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

Telephone Number:_______________________________________________________________

Taxpayer identification or Social Security Number:______________________________

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

Date:___________________________________________________________________________



                                       -2-

<PAGE>
                           TENDER FOR ALL OUTSTANDING
                 10 1/2% SENIOR SECURED DISCOUNT NOTES DUE 2008
                                 IN EXCHANGE FOR
             10 1/2% SENIOR SECURED DISCOUNT EXCHANGE NOTES DUE 2008
                                       OF
                            GST NETWORK FUNDING, INC.


To Our Clients:

                  We are enclosing herewith a Prospectus,  dated __________,  of
GST Network Funding, Inc., a Delaware corporation ("GST Funding"), GST USA, Inc.
("GST USA") and GST  Telecommunications,  Inc., a federally  chartered  Canadian
corporation  ("GST"),  and a  related  Letter  of  Transmittal  (which  together
constitute  the  "Exchange  Offer")  relating  to the  offer by GST  Funding  to
exchange its 10 1/2% Senior Secured  Discount  Exchange Notes Due 2008 (the "New
Notes"),  which  under  certain  circumstances,  may be  assumed  by GST USA and
guaranteed  by GST the offer and sale of which  have been  registered  under the
Securities Act of 1933, as amended (the "Securities  Act"), for a like principal
amount at maturity of its issued and outstanding 10 1/2% Senior Secured Discount
Notes Due 2008 (the "Old  Notes"),  which under  certain  circumstances,  may be
assumed  by GST USA and  guaranteed  by GST upon the  terms and  subject  to the
conditions set forth in the Exchange Offer.

                  PLEASE NOTE THAT THE EXCHANGE  OFFER WILL EXPIRE AT 5:00 P.M.,
NEW YORK CITY TIME, ON __________, _________, 1998 UNLESS EXTENDED.

                  The Exchange Offer is not conditioned  upon any minimum number
of Old Notes being tendered.

                  We are the  holder of record of Old Notes  held by us for your
account.  A tender of such Old Notes can be made only by us as the record holder
and pursuant to your instructions. The Letter of Transmittal is furnished to you
for your  information only and cannot be used by you to tender Old Notes held by
us for your account.

                  We request  instructions  as to whether you wish to tender any
or all of the Old Notes held by us for your  account  pursuant  to the terms and
conditions of the Exchange  Offer.  We also request that you confirm that we may
on your behalf make the representations contained in the Letter of Transmittal.

                  Pursuant  to the  Letter of  Transmittal,  each  holder of Old
Notes  will  represent  to GST  Funding,  GST USA and GST that (i) the New Notes
acquired in the  Exchange  Offer are being  obtained in the  ordinary  course of
business of the person  receiving such New Notes,  whether or not such person is
such holder,  (ii) neither the holder of the Old Notes nor any such other person
has an  arrangement  or  understanding  with any  person to  participate  in the
distribution of such New Notes, (iii) if the holder is not a broker-dealer or is
a broker-dealer but


<PAGE>
will not  receive  New Notes for its own  account  in  exchange  for Old  Notes,
neither  the  holder  nor any such  other  person is  engaged  in or  intends to
participate in a  distribution  of the New Notes and (iv) neither the holder nor
any such other person is an  "affiliate"  of GST Funding,  GST USA or GST within
the  meaning  of Rule 405 under  the  Securities  Act or,  if such  holder is an
"affiliate,"  that such holder will comply with the  registration and prospectus
delivery  requirements  of the Securities Act to the extent  applicable.  If the
tendering  holder is a broker-dealer  (whether or not it is also an "affiliate")
that will  receive New Notes for its own account in exchange  for Old Notes,  we
will  represent  on  behalf  of such  broker-dealer  that  the Old  Notes  to be
exchanged  for the New Notes were  acquired  by it as a result of  market-making
activities  or other  trading  activities,  and  acknowledge  on  behalf of such
broker-dealer  that it will deliver a prospectus meeting the requirements of the
Securities Act in connection with any resale of such New Notes. By acknowledging
that it will deliver and by delivering a prospectus  meeting the requirements of
the  Securities  Act in  connection  with  any  resale  of  such  New  Notes,  a
broker-dealer will not be deemed to admit that it is an "underwriter" within the
meaning of the Securities Act.

                                                            Very truly yours,



                                       -2-


                          NOTICE OF GUARANTEED DELIVERY
                                       for
                            Tender of all Outstanding
                 10 1/2% Senior Secured Discount Notes Due 2008
                                 in Exchange for
             10 1/2% Senior Secured Discount Exchange Notes Due 2008
                                       of
                            GST Network Funding, Inc.

         Registered holders of outstanding 10 1/2% Senior Secured Discount Notes
Due 2008 (the "Old Notes") of GST Network Funding, Inc. ("GST Funding"),  which,
under certain  circumstances,  may be assumed by GST USA,  Inc.  ("GST USA") and
guaranteed by GST Telecommunications, Inc. ("GST"), who wish to tender their Old
Notes in  exchange  for a like  principal  amount at  maturity of 10 1/2% Senior
Secured  Discount  Exchange  Notes Due 2008 (the "New  Notes")  of GST  Funding,
which, under certain circumstances,  may be assumed by GST USA and guaranteed by
GST, and whose Old Notes are not  immediately  available  or who cannot  deliver
their Old Notes and Letter of Transmittal  (and any other documents  required by
the  Letter of  Transmittal)  to United  States  Trust  Company of New York (the
"Exchange  Agent"),  prior  to the  Expiration  Date,  may use  this  Notice  of
Guaranteed  Delivery  or one  substantially  equivalent  hereto.  This Notice of
Guaranteed  Delivery may be delivered by hand or sent by facsimile  transmission
(receipt  confirmed  by  telephone  and  an  original  delivered  by  guaranteed
overnight  delivery) or mail to the Exchange  Agent.  See "The Exchange Offer --
Procedures for Tendering" in the Prospectus.

                  THE EXCHANGE AGENT FOR THE EXCHANGE OFFER IS:

                     UNITED STATES TRUST COMPANY OF NEW YORK
<TABLE>
<CAPTION>

BY MAIL:                     BY OVERNIGHT COURIER:        BY HAND:                              BY FACSIMILE:

<S>                          <C>                          <C>                                   <C>
United States Trust          United States Trust          United States Trust                   fax no. (212) 780-0592
  Company of New York          Company of New York          Company of New York                 (For Eligible Institutions
P.O. Box 844                 770 Broadway - 13th Floor    111 Broadway                          Only)
Cooper Station               Corporate Trust Operations   Lower Level
New York, NY 10276-0844        Department                 New York, NY 10006                    CONFIRM BY TELEPHONE:
                             New York, NY 10003           Attn:  Corporate Trust Services       telephone no. (800) 548-6565
</TABLE>

(registered or certified mail
recommended)

<PAGE>

Delivery of this Notice of  Guaranteed  Delivery to an address other than as set
forth above or transmission of  instructions  via a facsimile  transmission to a
number other than as set forth above will not constitute a valid delivery.

This Notice of Guaranteed Delivery is not to be used to guarantee signatures. If
a  signature  on a Letter of  Transmittal  is required  to be  guaranteed  by an
Eligible  Institution,  such  signature  guarantee must appear in the applicable
space provided on the Letter of Transmittal for Guarantee of Signatures.

                                                (SIGNATURE(S) ON FOLLOWING PAGE)


                                       -2-

<PAGE>
Ladies & Gentlemen:

         The  undersigned  hereby  tender(s) to GST Funding,  upon the terms and
subject  to the  conditions  set forth in the  Exchange  Offer and the Letter of
Transmittal,  receipt of which is hereby  acknowledged,  the aggregate principal
amount at  maturity  of Old Notes set forth  below  pursuant  to the  guaranteed
delivery procedures set forth in the Prospectus.

         The undersigned  understands that tenders of Old Notes will be accepted
only in  principal  amounts at maturity  equal to $1,000 or  integral  multiples
thereof.  The undersigned  understands that tenders of Old Notes pursuant to the
Exchange  Offer may not be withdrawn  after 5:00 p.m., New York City time on the
business  day prior to the  Expiration  Date.  Tenders  of Old Notes may also be
withdrawn if the Exchange  Offer is terminated  without any such Old Notes being
purchased thereunder or as otherwise provided in the Prospectus.

         All authority herein conferred or agreed to be conferred by this Notice
of Guaranteed  Delivery shall survive the death or incapacity of the undersigned
and every obligation of the undersigned under this Notice of Guaranteed Delivery
shall  be  binding  upon  the  heirs,   personal   representatives,   executors,
administrators,  successors,  assigns,  trustees in  bankruptcy  and other legal
representatives of the undersigned.

                            PLEASE SIGN AND COMPLETE
<TABLE>
<CAPTION>

<S>                                                           <C>
Signature(s) of Registered Owner(s) or Authorized             Name(s) of Registered Holder(s):
Signatory:_______________________________________
                                                              -------------------------------------------
- -----------------------------------------------
                                                              -------------------------------------------
- -----------------------------------------------
                                                              -------------------------------------------
Principal Amount at Maturity of Old Notes
Tendered:_______________________________________              Address:___________________________________

- -----------------------------------------------
                                                              -------------------------------------------
Certificate No(s). of Old Notes (if available)___________
                                                              Area Code and Telephone No.:_________________
- -----------------------------------------------
                                                              Date:______________________________________
- -----------------------------------------------
</TABLE>


                                       -3-

<PAGE>

     This  Notice  of  Guaranteed  Delivery  must be  signed  by the  registered
holder(s) of Old Notes exactly as its (their) name(s)  appear(s) on certificates
for Old Notes or on a  security  position  listing it (them) as the owner of Old
Notes, or by person(s) authorized to become registered Holder(s) by endorsements
and documents  transmitted with this Notice of Guaranteed Delivery. If signature
is by a trustee, executor, administrator, guardian, attorney-in-fact, officer or
other person acting in a fiduciary or representative  capacity, such person must
provide the following information.


                      PLEASE PRINT NAME(S) AND ADDRESS(ES)

Name(s):  ______________________________________________________________________

          ______________________________________________________________________

Capacity: ______________________________________________________________________

Address(es):      ______________________________________________________________

DO NOT SEND OLD NOTES WITH THIS FORM.  OLD NOTES  SHOULD BE SENT TO THE EXCHANGE
AGENT  TOGETHER  WITH  A  PROPERLY   COMPLETED  AND  DULY  EXECUTED   LETTER  OF
TRANSMITTAL.



                                    GUARANTEE
                    (NOT TO BE USED FOR SIGNATURE GUARANTEE)

     The undersigned, a member firm of a registered national securities exchange
or of the National Association of Securities Dealers,  Inc. or a commercial bank
or trust company having an office or a correspondent  in the United States or an
"eligible guarantor institution" as defined by Rule 17Ad-15 under the Securities
Exchange Act of 1934, as amended (the  "Exchange  Act"),  hereby (a)  represents
that each holder of Old Notes on whose behalf this tender is being made "own(s)"
the Old Notes covered hereby within the meaning of Rule 14e-4 under the Exchange
Act, (b) represents that such tender of Old Notes complies with such Rule 14e-4,
and (c) guarantees that, within three American Stock Exchange trading days after
the date of this Notice of Guaranteed  Delivery,  a properly  completed and duly
executed  Letter  of  Transmittal  (or  a  facsimile  thereof),   together  with
certificates  representing  the Old Notes  covered  hereby  in  proper  form for
transfer and required  documents will be deposited by the  undersigned  with the
Exchange Agent.

     THE UNDERSIGNED ACKNOWLEDGES THAT IT MUST DELIVER THE LETTER OF TRANSMITTAL
AND OLD NOTES  TENDERED  HEREBY TO THE EXCHANGE  AGENT WITHIN THE TIME SET FORTH
ABOVE  AND  THAT  FAILURE  TO DO SO  COULD  RESULT  IN  FINANCIAL  LOSS  TO  THE
UNDERSIGNED.


Name of Firm:_______________________________           Authorized Signature
Address:____________________________________
____________________________________________     Name:__________________________
Area Code and Telephone No.:________________     Title:_________________________
____________________________________________     Date:__________________________



                                       -4-



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