EXHIBIT 10.15


                                  AMENDMENT TWO
                                     TO THE
                            MANAGED NETWORK AGREEMENT
                                     BETWEEN
                       SPRINT COMMUNICATIONS COMPANY, L.P.
                                       AND
                               BRIDGE DATA COMPANY

The  Managed  Network  Agreement  ("Agreement")  between  Sprint  Communications
Company,  L.P.  ("Sprint")  and  Bridge  Data  Company  ("Customer"),  having an
effective date of March 1, 1995, as amended,  is hereby  further  amended as set
forth below.

WHEREAS,  Sprint and Customer have previously  entered into an Agreement for the
provision of managed network services; and

WHEREAS,  Customer  wished  to  procure  additional  equipment  for use with the
managed network services.

NOW THEREFORE, the parties mutually agree to the following:

1.       Revise Attachment A Scope of Work as follows:

Site Types A, B1,  C1, D, and E will  utilize a Telebit 2 Port  Netblazer  LS in
place of the Netblazer PN.  Microcomm  modems at all customer sites are replaced
by Teleblazer Standalone Modems.

2. Revise  Attachment  B, Section I - Equipment - Purchase  Price to include the
following  items. The LS 2S/A Telebit 2 Port Netblazer LS is replacing the PN2DE
Telebit  Netblazer  Router  at Site  Types A, B1,  C1, D and E. The  AP-8810  SA
Teleblazer  Standalone Modem replaces the Microcomm Deskport 28.8ES modem at all
customer sites.

A.       Equipment Part of Domestic Design

Model             Description               Qty      List Price    Net Price
-----             -----------               ---      ----------    ---------

LS 2S/A      Telebit 2 Port Netblazer LS    1        $1,259/ea     $1,070.15/ea
AP-8810 SA   Teleblazer Standalone Modem    1        $  349/ea     $  296.65/ea


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B. Other Equipment

Model              Description          Qty      List Price        Net Price
-----              -----------          ---      ----------        ---------

7220         V.35 DSU to Router Cable    1       $195.00/ea       $126.75/ea
SP1530       Adtran DSU (5)              1       $735.00/ea       $551.00/ea

2. Revise  Attachment B, Section I - Equipment - Purchase Price as follows:  The
list price for the PN2DE Telebit  Netblazer Router is hereby reduced from $2,299
each to  $1,849.00.  The net  price  is  therefore  reduced  from  $1,954.15  to
$1,571.65.

3. All other terms and  conditions of the  Agreement  shall remain in full force
and effect, except as expressly stated herein.

IN WITNESS WHEREOF,  the parties have executed this Amendment Two as of the date
of the last signature below.

SPRINT COMMUNICATIONS CO. L.P.            BRIDGE DATA COMPANY

/s/ James Mori                            /s/ Robert McCormick
-----------------------------             ----------------------------
Signature                                 Signature


James Mori                                Robert McCormick
-----------------------------             ----------------------------
Name                                      Name


Regional Director                         Senior VP
-----------------------------             ----------------------------
Title                                     Title


8/16/95                                   8/11/95
-----------------------------             ----------------------------
Date                                      Date







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