VTEL CORP
S-3, 1997-09-08
RADIO & TV BROADCASTING & COMMUNICATIONS EQUIPMENT
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<PAGE>
 
   As filed with the Securities and Exchange Commission on September 08, 1997
                                                      Registration No. 333-_____
================================================================================

                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549

                                   FORM S-3

            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                               VTEL CORPORATION
            (Exact name of registrant as specified in its charter)

           DELAWARE                                     74-2415696
(State or other jurisdiction of                       (I.R.S. Employer 
 incorporation or organization)                    Identification Number)

                                                      RODNEY S. BOND
                                                 CHIEF FINANCIAL OFFICER
         108 WILD BASIN ROAD                        108 WILD BASIN ROAD
         AUSTIN, TEXAS 78746                        AUSTIN, TEXAS 78746
           (512) 314-2700                              (512) 314-2700
(Name, address, including zip code,          (Name, address, including zip code,
and telephone number, including area            and telephone number, including
code, of registrant's principal                   area code of registrant's 
        executive offices)                             agent for service)



                                  Copies to:

                             L. STEVEN LESHIN ESQ.
                             JENKENS & GILCHRIST,
                          A PROFESSIONAL CORPORATION
                         1445 ROSS AVENUE, SUITE 3200
                             DALLAS, TEXAS  75202
                                (214) 855-4500

     APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:  From time
to time after the effective date of this registration statement.

     If the only securities being registered on this Form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box. [ ]

     If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box. [X]

     If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please 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(c)
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 delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. [ ]
                             --------------------
                        CALCULATION OF REGISTRATION FEE
<TABLE>
<CAPTION>
============================================================================================================== 
                                                                              PROPOSED
                                                    PROPOSED MAXIMUM          MAXIMUM
TITLE OF EACH CLASS OF                               OFFERING PRICE PER      AGGREGATE            AMOUNT OF
SECURITIES REGISTERED     AMOUNT TO BE REGISTERED    SECURITY/(1)/      OFFERING PRICE/(1)/   REGISTRATION FEE
- -------------------------------------------------------------------------------------------------------------- 
<S>                       <C>                      <C>                  <C>                   <C>
Common Stock              2,879,829               $7.125                 $20,518,782           $6,217.82
==============================================================================================================
</TABLE>

(1)  Estimated solely for the purpose of calculating the registration fee
     pursuant to Rule 457(c) and based upon the average of the high and low
     prices reported on the Nasdaq National Market on September 3, 1997.

     THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT 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 SECTION 8(a), MAY
DETERMINE.
<PAGE>
 
PROSPECTUS                     2,879,829 SHARES

                               VTEL CORPORATION
                                 COMMON STOCK
                                ---------------

     This Prospectus relates to 2,879,829 shares (the "Shares") of common stock,
$.01 par value per share (the "Common Stock"), of VTEL CORPORATION, a Delaware
corporation (the "Company" or "VTEL"), that may be offered and sold from time to
time by certain stockholders of the Company (the "Selling Stockholders").
Certain of such Shares are issuable upon exercise of Common Stock Purchase
Warrants ("Warrants") issued to certain of the Selling Stockholders by
Compression Labs, Incorporated ("CLI"), a company acquired by VTEL on May 23,
1997.

     The Common Stock is traded on the Nasdaq National Market under the symbol
"VTEL."  On September __, 1997, the closing price for the Common Stock on the
Nasdaq National Market was $______.

     The Shares offered hereby may be sold from time to time by the Selling
Stockholders.  Such sales may be made directly, through agents designated from
time to time, or through dealers and underwriters also to be designated, or on
the Nasdaq National Market or otherwise at prices and at terms then prevailing
or at prices related to the then current market price or in negotiated
transactions (which may include the pledge or hypothecation of some or all of
the Shares). To the extent required, the specific shares of Common Stock to be
sold, name of the Selling Stockholder (or the pledgee, donee, distributee,
transferee or other successors in interest of such Selling Stockholder, as the
case may be), public offering price, the names of any such agents, dealers or
underwriters, and any applicable commission or discount with respect to a
particular offer will be set forth in an accompanying Prospectus Supplement.
See "Plan of Distribution; Selling Stockholders."

     The Company will receive none of the proceeds from the sale of the Common
Stock offered hereby by the Selling Stockholders other than minimal proceeds
upon the exercise of the Warrants.  All expenses of registration incurred in
connection with this offering are being borne by the Company.  All selling and
other expenses incurred by the Selling Stockholders will be borne by the Selling
Stockholders.

     The aggregate proceeds to the Selling Stockholders from the sale of the
Shares will be the purchase price of the Shares sold, less the aggregate
brokerage commissions and underwriters' discounts, if any, and other expenses of
issuance and distribution not borne by the Company.

     The Company has agreed to indemnify the Selling Stockholders, and the
Selling Stockholders have agreed to indemnify the Company, against certain
liabilities, including liabilities under the Securities Act of 1933, as
amended.

     FOR A DISCUSSION OF CERTAIN RISKS OF AN INVESTMENT IN THE SHARES, SEE "RISK
FACTORS" BEGINNING ON PAGE 6 OF THIS PROSPECTUS.

           THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY
              THE SECURITIES AND EXCHANGE COMMISSION OR 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 SEPTEMBER ___, 1997.
<PAGE>
 
                             AVAILABLE INFORMATION

     The Company has filed with the Securities and Exchange Commission (the
"Commission") a Registration Statement on Form S-3 (the "Registration
Statement") under the Securities Act of 1933, as amended (the "Securities Act"),
of which this Prospectus is a part, with respect to the Common Stock offered
hereby.  This Prospectus omits certain information contained in the Registration
Statement, including exhibits thereto, and reference is made to the Registration
Statement for further information with respect to the Company and the Common
Stock offered hereby. Statements contained herein concerning the provisions of
documents are necessarily summaries of such documents and when any such document
is an exhibit to the Registration Statement, each such statement is qualified in
its entirety by reference to the copy of such document filed with the
Commission.  Copies of the Registration Statement, and exhibits thereto, may be
acquired upon payment of the prescribed fees or examined without charge at the
public reference facilities of the Commission at 450 Fifth Street, N.W.,
Washington, D.C. 20549.

     The Company is subject to the informational requirements of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and in accordance
therewith files reports and other information with the Commission.  Reports and
other information filed by the Company with the Commission pursuant to the
information requirements of the Exchange Act may be inspected and copied at the
public reference facilities maintained by the Commission at Judiciary Plaza, 450
Fifth Street, N.W., Room 1024, Washington, D.C. 20549, and at the following
Regional Offices of the Commission: Seven World Trade Center, 13th Floor, New
York, New York 10048 and Northwest Atrium Center, 500 West Madison Street, Suite
1400, Chicago, Illinois 60661.  Copies can be obtained at prescribed rates from
the Public Reference Section of the Commission at Judiciary Plaza, 450 Fifth
Street, N.W., Washington, D.C. 20549.  The Commission also maintains a World
Wide Web Site that contains reports, proxy statements and other information
regarding registrants, such as the Company, that file electronically with the
Commission.  The address of the site is http://www.sec.gov.

                      DOCUMENTS INCORPORATED BY REFERENCE

     The following documents or portions thereof filed by the Company are hereby
incorporated by reference in this Prospectus:

     (i)    the Company's Annual Report on Form 10-K filed with the Commission
            for the transition period ended July 31, 1996;

     (ii)   the Company's Annual Report on Form 10-K/A filed with the Commission
            for the transition period ended July 31, 1996;

     (iii)  the Company's Quarterly Reports on Form 10-Q for the quarters ended
            October 31, 1996, January 31, 1997 and April 30, 1997, filed with
            the Commission;

     (iv)   the Company's Current Report on Form 8-K, dated January 6, 1997,
            filed with the Commission;

     (v)    the Company's prospectus/proxy statement contained in its
            Registration Statement on Form S-4 (File No. 333-25247) filed with
            the Commission;

     (vi)   the Company's Current Report on Form 8-K, dated May 23, 1997, as
            amended on Form 8-K/A, filed with the Commission;

     (vii)  the Company's Current Report on Form 8-K, dated July 14, 1997,
            filed with the Commission; and

     (viii) the description of the Common Stock set forth in the Registration
            Statement on Form 8-A, filed with the Commission on March 31, 1992,
            including any amendment or report filed for the purpose of updating
            such description.

     In addition, all documents subsequently filed by the Company pursuant to
Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date of this
Prospectus and prior to the termination of the offering of Common Stock made
hereby shall be deemed to be incorporated by reference into this Prospectus and
to be a part hereof from the date of filing of such documents.  Any statement
contained herein or in a document incorporated or deemed to be incorporated by
reference herein shall be deemed to be modified or superseded for the purposes
of this Prospectus to the extent that a statement contained herein or in any
subsequently filed document which is or is deemed to be incorporated by

                                       2
<PAGE>
 
reference herein modifies or supersedes such statement.  Any such statement so
modified or superseded shall not be deemed, except as so modified or superseded,
to constitute a part of this Prospectus.

     The Company will provide without charge to each person to whom a copy of
this Prospectus is delivered, upon oral or written request of such person, a
copy of any and all of the documents incorporated by reference herein (other
than exhibits and schedules to such documents, unless such exhibits or schedules
are specifically incorporated by reference into such documents).  Such requests
should be directed to Rodney S. Bond, Chief Financial Officer, VTEL Corporation,
108 Wild Basin Road, Austin, Texas 78746, or by telephone at (512) 314-2700.

                                       3
<PAGE>
 
                              PROSPECTUS SUMMARY

     The following summary does not purport to be complete and is qualified in
its entirety by the more detailed information and consolidated financial
statements and related notes appearing elsewhere or incorporated by reference in
this Prospectus.  In addition to other information in this Prospectus, the
factors set forth under "Risk Factors" below should be considered carefully in
evaluating an investment in the Common Stock offered hereby.  Unless the context
indicates otherwise, all references herein to the "Company" or "VTEL" refer to
VTEL Corporation and its subsidiaries.

                                  THE COMPANY

     VTEL designs, manufactures and markets multi-media conferencing systems.
VTEL's systems integrate traditional video and audio conferencing with
additional functions, including the sharing of PC software applications and the
transmission of high-resolution images and facsimiles. Through the use of VTEL's
multi-media conferencing systems, users are able to replicate more closely the
impact and effectiveness of face-to-face meetings. VTEL's Pen Pal Graphics/TM/
and AppsView/TM/ user interfaces make its multi-media conferencing systems
simple to use. VTEL's systems are built upon a system platform which is based on
industry-standard, PC-compatible open hardware and software architecture.  By
leveraging this open architecture design, VTEL is able to integrate into the
videoconference PC-compatible hardware and software applications which allow
users to customize the systems to meet their unique needs.  The PC-architecture
also provides a natural pathway to connect VTEL's videoconferencing systems onto
local area networks (LANs) and wide area networks (WANs) thereby leveraging the
rapidly expanding network infrastructures being deployed in organizations
throughout the world.  Also complementing this open architecture is VTEL's
compliance with emerging industry video standards. VTEL's open architecture and
compliance with data and telecommunications standards permit the incorporation
of new functions through software upgrades, thereby extending the useful life of
the user's investment.

     The cornerstone of VTEL's business strategy is to identify customers that
can most benefit from the advanced functionality of multi-media conferencing
systems and to focus a substantial portion of its sales and marketing efforts on
these customers, including end-users in the areas of education, government,
health care and general business.  VTEL distributes its systems almost
exclusively through third-party resellers which include major telecommunications
providers such as Ameritech Corporation ("Ameritech"), GTE Corporation ("GTE"),
SBC Communications, Inc. ("Southwestern Bell"), Sprint Corporation ("Sprint"),
U.S. West, Inc. ("US West"), MCI Communications Corporation ("MCI") and other
value-added resellers. VTEL has built an extensive marketing and sales
organization to support its third-party resellers. This organization provides
marketing programs; field support personnel including sales managers, system
engineers, and business development managers; and personnel with industry
expertise to implement VTEL's targeted marketing strategy. Since VTEL's
inception, it has sold over 25,000 conferencing systems and multipoint control
units.

     In November 1995, VTEL completed the acquisition of certain assets and a
specified work force of the Integrated Communications Systems Group ("ICS") of
Peirce-Phelps, Inc. (the "ICS Transaction").  As part of Peirce-Phelps, Inc.,
ICS was a value-added reseller of videoconferencing systems, and also provided
integration, installation and maintenance services to certain end-users.  The
completion of the acquisition allows VTEL to significantly enhance its ability
to support VTEL's resellers' abilities to offer systems integration,
installation and end-user support to the ultimate purchaser of VTEL's products,
thereby allowing the resellers to more effectively provide an essential part of
the services that are integral to the purchase of VTEL's products.

                                       4
<PAGE>
 
     On May 23, 1997, VTEL completed the acquisition of Compression Labs,
Incorporated ("CLI"), in a transaction in which VTEL issued approximately 8.4
million shares of its Common Stock to the former shareholders of CLI (the
"Merger").  CLI is a leader in the development, manufacture and marketing of
videoconferencing systems based on Compressed Digital Video (CDV) technology.
CLI's systems use proprietary and industry standard algorithms to compress the
amount of data required to transmit digital video and audio signals, thereby
significantly reducing the cost of transmitting these signals over terrestrial,
microwave, cable or satellite networks.

     CLI's group and desktop videoconferencing systems permit users at different
locations to conduct full-color motion videoconferences ranging from two-way
informal meetings between individuals to formal meetings between large groups at
multiple locations. At the time of the Merger, CLI's families of
videoconferencing systems included Rembrandt II/VP and Radiance
videoconferencing systems, the eclipse family of mid-range videoconferencing
systems, and the CLI Desktop Video family. Videoconferencing systems operate
worldwide over a broad range of transmission speeds from 56 kilobits per second
(kbps) to 2.048 megabits per second (mbps) for the Rembrandt and Radiance
Systems, 768 kbps for the eclipse, and 384 kbps for the desktop. All of CLI's
current videoconferencing systems are compliant with the International
Telecommunication Union-Telecommunication (ITU-T) H.320 videoconferencing
standard, and most also provide customer-selectable proprietary algorithms.

     VTEL's executive offices are located at 108 Wild Basin Road, Austin, Texas
78746, and its telephone number at such offices is (512) 314-2700.


                          FORWARD-LOOKING INFORMATION

     CERTAIN INFORMATION CONTAINED IN THIS PROSPECTUS CONSTITUTES "FORWARD-
LOOKING STATEMENTS" WITHIN THE MEANING OF SECTION 27A OF THE SECURITIES ACT, AND
SECTION 21E OF THE EXCHANGE ACT, WHICH CAN BE IDENTIFIED BY THE USE OF FORWARD-
LOOKING TERMINOLOGY SUCH AS "MAY,"  "WILL," "EXPECT," "ANTICIPATE," "ESTIMATE"
OR "CONTINUE" OR THE NEGATIVE THEREOF OR OTHER VARIATIONS THEREON OR COMPARABLE
TERMINOLOGY.  THE STATEMENTS IN "RISK FACTORS" OF THIS PROSPECTUS CONSTITUTE
CAUTIONARY STATEMENTS IDENTIFYING IMPORTANT FACTORS, INCLUDING CERTAIN RISKS AND
UNCERTAINTIES, WITH RESPECT TO SUCH FORWARD-LOOKING STATEMENTS THAT COULD CAUSE
ACTUAL RESULTS TO DIFFER MATERIALLY FROM THOSE REFLECTED IN SUCH FORWARD-LOOKING
STATEMENTS.

                                       5
<PAGE>
 
                                 RISK FACTORS

     An investment in the Common Stock involves certain risks.  Prospective
investors should carefully consider the following risk factors, in addition to
the other information contained or incorporated by reference in this Prospectus,
in evaluating an investment in the Common Stock offered hereby.

     Risks Relating to the Merger - Integration of Operations

     On May 23, 1997, VTEL acquired CLI in the Merger. The integration of
operations following the Merger will require the dedication of management
resources which will temporarily detract from attention to the day-to-day
business of the combined company. The difficulties of integration may be
increased by the necessity of integrating personnel with disparate business
backgrounds and combining two different corporate cultures. Following the
Merger, VTEL is attempting to reduce expenses by the elimination of duplicative
or unnecessary facilities, employees, marketing programs and other expenses.
Subsequent to such reductions, VTEL intends to reinvest much of these cost
savings in programs aligned with its current strategic initiatives. There can be
no assurance that VTEL will be able to reduce expenses in this fashion, that
there will not be high costs associated with such activities, that such
reductions will not result in a decrease in revenues or that there will not be
other material adverse effects of such activities. Such effects could materially
reduce the earnings of the combined company. Following the Merger, VTEL also is
seeking to sell to CLI customers VTEL products that have higher gross profit
margins than the CLI products currently being purchased by such customers. There
can be no assurance that this effort at product transition will be successful or
that the integration of the product lines of the two companies will not have
material adverse effects on results of operations. VTEL expects to incur a
charge in the quarter ended July 31, 1997, currently estimated to be in the
range of $25 to $30 million, to reflect the combination of the two companies,
including the elimination of duplicate facilities, severance costs relating to
employee terminations, the write-off of certain intangibles, property and
equipment, receivables and inventories, discharge and accruals of contingent
liabilities and payment of transaction costs. This amount is a preliminary
estimate only and is therefore subject to change. In addition, there can be no
assurance that VTEL will not incur additional charges in subsequent quarters to
reflect costs associated with the Merger. Further, there can be no assurance
that the present and potential customers of VTEL and CLI will continue their
current buying patterns without regard to the Merger, and any significant delay
or reduction in orders could have an adverse effect on the near-term business
and results of operations of the combined company.

     Potential Fluctuations in Quarterly Results

     As of April 30, 1997, the accumulated deficit of VTEL was $28,670,000.
While VTEL has achieved annual revenue growth in each of the years ended
December 31, 1991 through December 31, 1995 and the seven months ended July 31,
1996, and has attained profitability in ten of the last twelve reported quarters
beginning with the second quarter of 1994, there can be no assurance that
sustained revenue growth or profitability can be achieved. VTEL's expense levels
are based, in part, on its expectations as to future revenue levels, which are
difficult to predict due in part to VTEL's strategy of distributing its products
through resellers.  If revenue levels are below expectations, operating results
may be materially and adversely affected.  In addition, VTEL's quarterly
operating results may fluctuate as a result of many factors, including price
reductions, delays in the introduction of new products, delays in purchase
decisions due to new product announcements by VTEL or its competitors, increased
competition, failure to reduce product costs or maintain product quality,
cancellations or delays of orders, interruptions or delays in supplies of key
components, changes in reseller base, customer base, business or product mix and
seasonal patterns of capital spending by customers.

     Technological Change and New Products

     The market for VTEL's products, including CLI's product line acquired in
the Merger, is characterized by rapidly changing technology, evolving industry
standards and frequent product introductions.  New products are generally
characterized by increased functionality and better picture and audio quality at
lower bandwidths and at reduced prices. The introduction of products embodying
new technology and the emergence of new industry standards may render existing
products obsolete and unmarketable. VTEL's ability to successfully develop and
introduce on a timely basis new and enhanced products that embody new
technology, anticipate and incorporate evolving industry standards and achieve
levels of functionality and price acceptable to the market will be a significant
factor in VTEL's ability to grow and to remain competitive. VTEL has in the past
experienced delays in introducing certain of its products, primarily due to
VTEL's failure to adequately anticipate the resources necessary for its
development efforts and, in some cases, VTEL's decision

                                       6
<PAGE>
 
to devote development resources to other activities. While VTEL believes it has
made improvements in each of these areas, there can be no assurance that it will
not encounter technical or other difficulties that could delay introduction of
new products in the future. If VTEL is unable, for technological or other
reasons, to develop competitive products in a timely manner in response to
changes in the industry, VTEL's business and operating results will be
materially and adversely affected.

     Competition

     The videoconferencing market segment is extremely competitive. VTEL
currently experiences significant competition from other manufacturers,
including PictureTel Corporation ("PictureTel"), Sony Corporation ("Sony"),
Nippon Electric Corporation ("NEC"), Mitsubishi, Ltd. ("Mitsubishi"), Fujitsu,
Ltd. ("Fujitsu"), Panasonic, Ltd. ("Panasonic"), General Plessey
Telecommunications ("GEC Plessey") and British Telecommunications plc ("British
Telecom"). VTEL's existing competitors and many of its potential competitors are
more established, benefit from greater market recognition and have greater
financial, technological, production and marketing resources than those of VTEL.
These factors may materially and adversely affect VTEL's competitive position
and accordingly, there can be no assurance that VTEL will be able to compete
successfully in the future. There can be no assurance that VTEL will have
sufficient resources to make continued new investments in product development
and sales and marketing or that VTEL will be able to make technological advances
necessary to remain competitive.

     Certain of VTEL's competitors have devoted significant resources to the
development and marketing of person-to-person visual communications products,
such as desktop videoconferencing systems and videophones, which may result in
increased competition. Intel Corporation ("Intel") has recently introduced a new
version of its Pentium processor, with MMX/TM/ technology, that improves the
ability of PCs to provide for video conferencing, which is expected to result in
increased competition as consumers are offered the choice of economical desktop
video conferencing on their PCs as an alternative to VTEL's fully featured
systems. Further, PictureTel has entered into non-exclusive agreements for the
development of desktop videoconferencing systems with Compaq Computer
Corporation ("Compaq") and co-marketing and reselling agreements with AT&T
Communications, Inc. ("AT&T") and International Business Machines Corporation
("IBM"). As additional forms of conferencing systems, such as desktop
videoconferencing systems, emerge, manufacturers and suppliers of desktop
computer systems and software may elect to offer videoconferencing products,
thereby increasing competition. In order to compete in the market segment for
business personal videoconferencing systems, VTEL introduced the VTEL 115S and
117S systems, which began shipping in the first quarter of 1994, the VPC
cardset, which began shipping in the first calendar quarter of 1996, and the
Smart Station system which began shipping April 1997. Rather than expend
significant resources in the low-cost personal systems segment of the
conferencing market segment, VTEL forms strategic alliances with other companies
to participate in the development of these low-cost systems. VTEL intends to
continue its focus on conferencing systems where VTEL believes that it can add
significant value through software, user interfaces and applications designed to
meet the needs of its customers.

     Dependence on Key Employees

     VTEL's development, management of its growth and other activities depend on
the efforts of key management and technical employees.  Competition for such
personnel is intense.  VTEL uses incentives, including competitive compensation
and stock option plans, to attract and retain well-qualified employees.  There
can be no assurance, however, that VTEL will continue to attract and retain
personnel with the requisite capabilities and experience.  The loss of one or
more of VTEL's key management or technical personnel also could materially and
adversely affect VTEL. VTEL generally does not have employment agreements with
its key management personnel or technical employees. VTEL's future success is
also dependent upon its ability to effectively attract, retain, train, motivate
and manage its employees.  Failure to do so could have a material adverse effect
on VTEL's business and operating results.

     Management of Growth

     VTEL recently has experienced a period of rapid growth that has placed and
will continue to place a significant strain on VTEL's management, operational
and financial resources.  The integration of the personnel and assets which were
acquired in the Merger and in other possible future acquisitions could place
additional strains on these management, operational and financial resources.
While VTEL believes that the Merger will be advantageous to its business, there
can be no assurance that the anticipated financial benefits will be realized,
which could materially and adversely affect 

                                       7
<PAGE>
 
VTEL's future results of operations. VTEL's future operating results will depend
on its ability to broaden and develop its senior management and to attract and
retain skilled employees, as well as on its ability to manage its growth
successfully.

     Distribution Strategy and Customer Concentration

     VTEL relies substantially on third parties for the distribution of its
products.  In contrast, many of VTEL's competitors sell their products primarily
directly to end-users. A reduction in the sales efforts by certain of VTEL's
current resellers or a termination of their relationships with VTEL could have a
material adverse effect on VTEL's business and operating results. Certain of
these resellers also represent or may in the future represent other lines of
products, some of which compete with those of VTEL. While VTEL attempts to
encourage these resellers to focus on selling VTEL's products through marketing
and support programs, there is a risk that these resellers may give higher
priority to products of other suppliers, reducing their efforts devoted to
selling VTEL's products. Ten of VTEL's resellers accounted for 53%, 56%, 63% and
58% of VTEL's revenues for the seven months ended July 31, 1996 and for the
fiscal years ended December 31, 1995, 1994 and 1993, respectively. Typically,
VTEL's agreements with its resellers involve non-exclusive arrangements which
may be canceled by either party at will and contain no minimum purchase
requirements on the part of the reseller. There can be no assurance that VTEL's
distribution strategy will be successful or that VTEL will be able to retain its
current resellers or to identify new resellers in the future that are acceptable
to VTEL.

     The cornerstone of VTEL's sales and marketing strategy is to focus a
substantial portion of VTEL's efforts on generating sales to customers in
education, government, health care and general business.  Since 1993, VTEL has
devoted significant resources to generate sales of its products to these types
of customers.  A reduction or adverse change in patterns of capital spending by
these types of customers due to general economic conditions, fiscal policies of
government, possible reforms in health care laws and other factors beyond the
control of VTEL may materially and adversely affect VTEL's revenues and
operating results.

     Legal Proceedings

     CLI is currently engaged in several legal proceedings relating to matters 
arising prior to the Merger. There can be no assurance that CLI's legal 
proceedings can be resolved favorably to CLI or VTEL. Such legal proceedings, if
continued for an extended period of time, could have an adverse effect upon 
CLI's working capital and management's ability to concentrate on its business. 
An unfavorable outcome in any one or several such legal proceedings could have a
material adverse CLI and, hence, VTEL.

     In a complaint filed December 20, 1993, in the United States District Court
in Dallas, Texas, Datapoint Corporation ("Datapoint") alleged that CLI had 
infringed two United States patents owned by Datapoint relating to video 
conferencing networks. The complaint seeks a judgment of infringement, monetary 
damages, injunctive relief and attorneys' fees. CLI responded to the complaint 
by denying the material allegations of the complaint and asserting affirmative 
defenses. Discovery has commenced in the case. On September 27, 1995, CLI filed 
a motion to construe the scope of the patent claims at issue in the litigation 
so as to elucidate whether Datapoint could assert that CLI is infringing the 
patents in suit, or whether Datapoint's patents are invalid in light of the 
prior art. In April 1996, a Special Master submitted a report which did not 
recommend that the Court adopt CLI's position set forth in the motion. The Count
in September 1996 adopted the report of the Special Master that the claims of
the patents in suit be construed in a manner favorable to the plaintiff. The
case has been set for trial in the fall of 1997. Recently, CLI filed a motion
seeking to join VTEL as a party to the suit. CLI and VTEL are vigorously
defending the claims.

     In June 1997, Keytech, S.A. ("Keytech") filed suit against CLI in the 
United States District Court in Tampa, Florida. Keytech was a distributor of 
satellite encoder and decoder products manufactured by a division of CLI which 
CLI sold in June 1996. Keytech has asserted that the equipment sold was 
defective and did not conform to contract specifications and express and implied
warranties. Keytech has asserted damages of in excess of $20 million based on 
its allegations of breach of contract and breach of warranties. CLI has filed an
answer denying liability and has asserted cross-claims against Keytech for 
amounts due and unpaid for equipment sold by CLI to Keytech.

     Dependence on Third Parties

     Substantially all of VTEL's electronic components, subsystems and
assemblies are made by outside vendors. Certain components are currently
available only from sole sources and embody such parties' proprietary
technology. Disruption in supply, a significant increase in price of one or more
of these components or failure of a third-party supplier to remain competitive
in functionality or price could have a material adverse effect on VTEL's
business and operating results.  There can be no assurance that VTEL will not
experience such problems in the future.  Similarly, excessive rework costs
associated with defective components or process errors could adversely affect
VTEL's business and operating results.  VTEL does not have contracts with many
of its suppliers ensuring continued availability of key electronic components.

     In addition, VTEL from time to time enters into development arrangements
with other third parties to develop and incorporate new features and functions
into VTEL's products.  As such, VTEL is dependent upon these third parties to
fulfill their respective obligations under these development arrangements and
failure of these third parties to do so could have a material adverse effect on
VTEL's results of operations.

     Possible Volatility of Stock Price

     The market price of VTEL Common Stock has been, and in the future will
likely be, significantly affected by factors such as the announcement of new
products or technological innovations by VTEL or its competitors, quarter-to-
quarter variations in VTEL's anticipated or actual results of operations and
general conditions in high technology industries.  The stock market has, on
occasion, experienced extreme price and volume fluctuations, which have affected
the market prices particularly for many high technology companies, and which
have often been unrelated to the operating performance of the specific
companies.

                                       8
<PAGE>
 
                                  THE COMPANY

     VTEL designs, manufactures and markets multi-media conferencing systems.
VTEL's systems integrate traditional video and audio conferencing with
additional functions, including the sharing of PC software applications and the
transmission of high-resolution images and facsimiles. Through the use of VTEL's
multi-media conferencing systems, users are able to replicate more closely the
impact and effectiveness of face-to-face meetings. VTEL's Pen Pal Graphics/TM/
and AppsView/TM/ user interfaces make its multi-media conferencing systems
simple to use. VTEL's systems are built upon a system platform which is based on
industry-standard, PC-compatible open hardware and software architecture.  By
leveraging this open architecture design, VTEL is able to integrate into the
videoconference PC-compatible hardware and software applications which allow
users to customize the systems to meet their unique needs. The PC-architecture
also provides a natural pathway to connect VTEL's videoconferencing systems onto
local area networks (LANs) and wide area networks (WANs) thereby leveraging the
rapidly expanding network infrastructures being deployed in organizations
throughout the world.  Also complementing this open architecture is VTEL's
compliance with emerging industry video standards. VTEL's open architecture and
compliance with data and telecommunications standards permit the incorporation
of new functions through software upgrades, thereby extending the useful life of
the user's investment.

     The cornerstone of VTEL's business strategy is to identify customers that
can most benefit from the advanced functionality of multi-media conferencing
systems and to focus a substantial portion of its sales and marketing efforts on
these customers, including end-users in the areas of education, government,
health care and general business.  VTEL distributes its systems almost
exclusively through third-party resellers which include major telecommunications
providers such as Ameritech Corporation ("Ameritech"), GTE Corporation ("GTE"),
SBC Communications, Inc. ("Southwestern Bell"), Sprint Corporation ("Sprint"),
U.S. West, Inc. ("US West"), MCI Communications Corporation ("MCI") and other
value-added resellers. VTEL has built an extensive marketing and sales
organization to support its third-party resellers. This organization provides
marketing programs; field support personnel including sales managers, system
engineers, and business development managers; and personnel with industry
expertise to implement VTEL's targeted marketing strategy. Since VTEL's
inception, it has sold over 25,000 conferencing systems and multipoint control
units.

     In November 1995, VTEL completed the acquisition of certain assets and a
specified work force of the Integrated Communications Systems Group ("ICS") of
Peirce-Phelps, Inc. (the "ICS Transaction").  As part of Peirce-Phelps, Inc.,
ICS was a value-added reseller of videoconferencing systems, and also provided
integration, installation and maintenance services to certain end-users.  The
completion of the acquisition allows VTEL to significantly enhance its ability
to support VTEL's resellers' abilities to offer systems integration,
installation and end-user support to the ultimate purchaser of VTEL's products,
thereby allowing the resellers to more effectively provide an essential part of
the services that are integral to the purchase of VTEL's products.

     On May 23, 1997, VTEL completed the Merger, whereby it acquired CLI in
exchange for approximately 8.4 million shares of VTEL's Common Stock.  CLI is a
leader in the development, manufacture and marketing of visual communication
systems based on Compressed Digital Video (CDV) technology. CLI's systems use
proprietary and industry standard algorithms to compress the amount of data
required to transmit digital video and audio signals, thereby significantly
reducing the cost of transmitting these signals over terrestrial, microwave,
cable or satellite networks.

     CLI's group and desktop videoconferencing systems permit users at different
locations to conduct full-color motion videoconferences ranging from two-way
informal meetings between individuals to formal meetings between large groups at
multiple locations. At the time of the Merger, CLI's families of
videoconferencing systems included Rembrandt II/VP and Radiance
videoconferencing systems, the eclipse family of mid-range videoconferencing
systems, and the CLI Desktop Video family. Videoconferencing systems operate
worldwide over a broad range of transmission speeds from 56 kilobits per second
(kbps) to 2.048 megabits per second (mbps) for the Rembrandt and Radiance
Systems, 768 kbps for the eclipse, and 384 kbps for the desktop. All of CLI's
current videoconferencing systems are compliant with the International
Telecommunication Union-Telecommunication (ITU-T) H.320 videoconferencing
standard, and most also provide customer-selectable proprietary algorithms.

                                       9
<PAGE>
 
                            SELECTED FINANCIAL DATA


The following table sets forth supplemental consolidated financial data for VTEL
as of the dates and for the periods indicated.  All such data reflects the
Merger with CLI on May 23, 1997, which Merger was accounted for as a pooling of
interests.  The supplemental consolidated financial data as of December 31, 1994
and 1995 and July 31, 1996 and for each of the three years in the period ended
December 31, 1995 and the seven months ended July 31, 1996 has been derived from
the audited supplemental consolidated financial statements of VTEL included
elsewhere herein.  The supplemental consolidated financial data (1) as of  July
31, 1995 and for the seven months ended July 31, 1995 and (2) as of April 30,
1997 and for the nine months ended April 30, 1996 and 1997 has been derived from
the unaudited supplemental consolidated financial statements of VTEL included
elsewhere herein.  The supplemental consolidated financial data as of December
31, 1991, 1992 and 1993 and for each of the three years in the period ended
December 31, 1993 has been derived from the unaudited supplemental consolidated
financial statements of VTEL not included herein.  The unaudited supplemental
consolidated financial statements include all adjustments, consisting of normal
recurring adjustments, which VTEL considers necessary for a fair presentation of
its financial position as of such dates and the results of operations and cash
flows for such periods.  Operating results for the nine months ended April 30,
1997 are not necessarily indicative of the results that may be expected for the
entire year ended July 31, 1997.  The selected financial data should be read in
conjunction with the supplemental consolidated financial statements of VTEL and
"Management's Discussion and Analysis of Financial Condition and Results of
Operations."
<TABLE> 
<CAPTION> 

                                                                                            For the             For the
                                                  For the Years                          Seven Months         Nine Months
                                                Ended December 31,                       Ended July 31,      Ended April 30,
                                ---------------------------------------------------    ------------------   -----------------
                                   1991      1992      1993       1994        1995       1995       1996      1996     1997
                                ---------  --------  ---------   --------   --------   --------   --------  --------  --------
<S>                             <C>        <C>        <C>        <C>        <C>        <C>        <C>       <C>       <C> 
                                                             (in thousands, except per share amounts)
Statement of Operations Data:
  Revenues                       $ 72,350  $121,098   $126,547   $169,189   $191,074   $ 98,070   $ 96,962  $142,028  $144,976

  Gross margin                     27,148    40,326     39,089     66,380     66,843     39,971     35,980    44,626    58,042
  Net loss from continuing
    operations                    (20,321)   (1,931)   (21,518)    (4,816)   (17,301)    (4,335)   (18,507)  (25,799)   (9,660)
  Net income (loss)               (17,528)   (1,796)   (12,817)       169    (53,843)    (3,811)   (18,507)  (62,865)  (16,523)

  Net loss per share from
    continuing operations       $   (2.09) $  (0.14)  $  (1.51)  $  (0.27)  $  (0.90)  $  (0.24)  $  (0.87) $  (1.27) $  (0.56)

  Net income (loss) per share       (1.80)    (0.13)     (0.90)      0.01      (2.81)     (0.21)     (0.87)    (3.09)    (0.87)

Balance Sheet Data:
  Working capital                $ 48,175  $ 67,064   $ 85,335    $ 85,088  $ 93,330   $ 76,023   $ 77,091   $ 77,835  $ 65,674
  Total assets                     93,296   137,010    170,469     178,086   223,061    182,082    175,317    196,503   158,516
  Long-term debt                       27        10      1,020         494       985      1,278        -          699       -
  Stockholders' equity             64,280    95,183    117,595     124,185   139,512    126,739    122,238    126,663   110,746
</TABLE> 
  

                                      10
<PAGE>
 
MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
OPERATIONS

On May 23, 1997, shareholders of VTEL and CLI approved the Merger of VTEL-Sub,
Inc., a Delaware corporation and direct wholly owned subsidiary of VTEL ("Merger
Sub"), with and into CLI, pursuant to an Agreement and Plan of Merger and
Reorganization (the "Merger Agreement"), with CLI becoming a direct wholly-owned
subsidiary of VTEL. As a result of the Merger, (a) the outstanding shares of
CLI's common stock, par value $.001 per share ("CLI Common Stock"), were
converted into the right to receive 0.46 shares of common stock of VTEL, par
value $.01 per share ("VTEL Common Stock"), per share of CLI Common Stock
converted (or cash in lieu of fractional shares otherwise deliverable in respect
thereof), and (b) the outstanding shares of CLI Series C Preferred Stock, par
value $.001 per share ("CLI Preferred Stock"), were converted into the right to
receive 3.15 shares of VTEL Common Stock per share of CLI Preferred Stock
converted (or cash in lieu of fractional shares otherwise deliverable in respect
thereof). The CLI shares were exchanged for a total of 8,424,741 shares of VTEL
Common Stock. The acquisition was accounted for as a pooling of interests and
accordingly, the accompanying supplemental consolidated financial information
has been restated for all periods to include the accounts of both VTEL and CLI.

In May 1996, the Company changed its fiscal year end from December 31 to July
31. The accompanying financial information includes the results of operations
and cash flows for the seven month transition period ended July 31, 1996 with
comparative presentation of the unaudited results for the seven months ended
July 31, 1995. Results of operations for the seven month periods ended July 31,
1996 and 1995 are not necessarily indicative of the operating results which
would be expected for a full year.

The following discussion of the consolidated operations and financial condition
of the Company for each of the years in the three year period ended December 31,
1995, for the seven month periods ended July 31, 1995 and 1996, and for the nine
month periods ended April 30, 1996 and 1997 should be read in conjunction with
the Company's supplemental consolidated financial statements and related notes
thereto included elsewhere herein.

RESULT OF OPERATIONS

The following table sets forth for the fiscal periods indicated the percentage
of revenues represented by certain items in the Company's supplemental
consolidated statement of operations:

<TABLE>
<CAPTION>
                                         For the            For the Seven        For the Nine
                                      Years Ended            Months Ended        Months Ended
                                      December 31,             July 31,            April 30,
                                 ----------------------   ------------------    --------------
                                  1993    1994    1995       1995      1996      1996    1997
                                 ------  ------  ------   ----------  ------    ------  ------
                                                          (unaudited)             (unaudited)
<S>                              <C>     <C>     <C>      <C>         <C>       <C>     <C>
Revenues                         100.0%  100.0%  100.0%      100.0%   100.0%    100.0%  100.0%
Gross margin                      30.9    39.2    35.0        40.8     37.1      31.4    40.0
Selling, general and
   administrative                 33.4    31.0    32.7        32.0     40.1      37.2    33.8
Research and development          14.9    11.2    11.1        12.1     16.8      13.1    12.8
Total operating expenses          48.3    42.2    44.4        45.0     58.0      50.6    47.4
Other income, net                  0.4     0.2     0.4         0.2      1.8       1.1     0.7
Net loss from continuing
   operations                    (17.0)   (2.8)   (9.1)       (4.4)   (19.1)    (18.2)   (6.7)
Net income (loss)                (10.1)%   0.1 % (28.2)%      (3.9)%  (19.1)%   (44.3)% (11.3)%

</TABLE>

                                      11
<PAGE>
 
FOR THE YEARS ENDED DECEMBER 31, 1993, 1994 AND 1995, THE SEVEN MONTHS ENDED
JULY 31, 1995 AND 1996, AND THE NINE MONTHS ENDED APRIL 30, 1996 AND 1997.

Revenues

Consolidated revenues increased from $126.5 million in 1993 to $169.2 million in
1994 and to $191.1 million in 1995.   The increases in revenues represent
increases of 34% from 1993 to 1994 and 13% from 1994 to 1995.  The increases are
the result of a higher level of unit sales of videoconferencing systems in each
year during the three year period ended December 31, 1995.

Consolidated revenues decreased from $98.1 million for the seven months ended
July 31, 1995 to $97.0 million for the seven months ended July 31, 1996, a
decrease of 1%.  The decrease in revenues is the result of a reduction in the
unit sales of videoconferencing systems due primarily to product transitions
during the year ended December 31, 1995 and the seven months ended July 31, 1996
to lower cost, higher functionality systems which deferred customer purchases.
The decrease in revenues was also attributable to a decrease in the average
selling prices for the Company's systems.  Increases in service and integration
revenues during the seven months ended July 31, 1996 from the assets acquired in
the ICS Transaction (see Note 3 to the Supplemental Consolidated Financial
Statements) slightly offset the decline in revenues from system sales resulting
in a modest decline in consolidated revenues from the seven months ended July
31, 1995 to the seven months ended July 31, 1996.

Consolidated revenues increased from $142.0 million for the nine months ended
April 30, 1996 to $145.0 million for the nine months ended April 30, 1997, an
increase of 2%.  The increase in revenues is the result of a higher level of
unit sales of videoconferencing systems, offset by a reduction in revenues
related to the Company's broadcast products division which was sold in June
1996.

The following table summarizes the Company's Group Conferencing and multipoint 
control units sales activity:

<TABLE> 
<CAPTION> 

                                               For the                  For the Seven           For the Nine
                                             years Ended                Months Ended            Months Ended
                                             December 31,                  July 31,              April 30,
                                      -------------------------        ----------------        ---------------
                                      1993      1994      1995         1995       1996         1996      1997
                                      -----     -----     -----        -----      -----        -----     ----- 
<S>                                   <C>       <C>       <C>          <C>        <C>          <C>       <C> 
Large-group conferencing systems      3,038     3,456     3,607        1,903      1,654        2,536     2,668 
Small-group conferencing systems          3       201       334          201         69          171       184 
Mulitpoint control units                116       269       223          113         81          144       170 
                                      -----     -----     -----        -----      -----        -----     ----- 
Total units                           3,157     3,926     4,164        2,217      1,804        2,851     3,022
                                      =====     =====     =====        =====      =====        =====     =====
</TABLE> 

International sales as a percentage of total consolidated product revenues were
15%, 18%, and 23% for the years ended December 31, 1993, 1994 and 1995; 22% and
21% for the seven months ended July 31, 1995 and 1996; and 22% and 27% for the
nine months ended April 30, 1996 and 1997.  The increase in international
revenues as a percentage of total consolidated product revenues is the result of
increased penetration into foreign markets such as Europe, China and the Far
East.

The Company believes its foreign currency exposure to be relatively low in that
foreign sales are predominantly in U.S. dollars.  The Company does not engage in
any currency hedging programs that utilize foreign currency contracts, options
or other derivative instruments to hedge the Company's foreign currency risk.

Consolidated service and other revenues increased from $5.3 million in 1993 to
$9.6 million in 1994 and to $21.6 million in 1995.   The increases in service
and other revenues represent increases of 81% from 1993 to 1994 and 125% from
1994 to 1995.  The increases are the result of services being provided to a
larger installed base of the Company's systems due to a 

                                      12
<PAGE>
 
higher level of unit sales of videoconferencing systems in each year during the
three year period ended December 31, 1995.

Consolidated service and other revenues increased from $8.9 million for the
seven months ended July 31, 1995 to $22.9 million for the seven months ended
July 31, 1996, an increase of 157%.  The increase is the result of increases in
service and integration revenues during the seven months ended July 31, 1996
from the assets acquired in the ICS Transaction (see Note 3 to the Supplemental
Consolidated Financial Statements).

Consolidated service and other revenues increased from $24.9 million for the
nine months ended April 30, 1996 to $30.1 million for the nine months ended
April 30, 1997, an increase of 21%.  The increase in revenues is the result of
services being provided to a larger installed base of the Company's systems due
to a higher level of unit sales of videoconferencing systems from the nine
months ended April 30, 1996 to the nine months ended April 30, 1997.

While the Company strives for consistent revenue growth, there can be no
assurance that consistent revenue growth or profitability can be achieved.
Consistent with many companies in the technology industry, the Company's
business model is characterized by a very high degree of operating leverage.
The Company's expense levels are based, in part, on its expectations as to
future revenue levels, which are difficult to predict partly due to the
Company's strategy of distributing its products through resellers.  Because
expense levels are based on the Company's expectations as to future revenues,
the Company's expense base is relatively fixed in the short term.  If revenue
levels are below expectations, operating results may be materially and adversely
affected and net income is likely to be disproportionately adversely affected.
In addition, the Company's quarterly and annual results may fluctuate as a
result of many factors, including price reductions, delays in the introduction
of new products, delays in purchase decisions due to new product announcements
by the Company or its competitors, cancellations or delays of orders,
interruptions or delays in supplies of key components, changes in reseller base,
customer base, business or product mix and seasonal patterns and other shifts of
capital spending by customers. There can be no assurance that the Company will
be able to increase or even maintain its current level of revenues on a
quarterly or annual basis in the future.

The integration of operations following the Merger will require the dedication
of management resources which will temporarily detract from attention to the
day-to-day business of the combined company.  The focus of management resources
on merger-related issues could have an adverse effect on revenues.  Due to all
of the foregoing factors, it is possible that in one or more future quarters the
Company's operating results will be below the expectations of public securities
market analysts.  In such event, the price of the Company's Common Stock would
likely be materially adversely affected.

Gross margin

Gross margins were 31%, 39%, and 35% for the years ended December 31, 1993, 1994
and 1995; 42% and 37% for the seven months ended July 31, 1995 and 1996; and 31%
and 40% for the nine months ended April 30, 1996 and 1997.  The increase in
gross margin from the year ended December 31, 1993 to the year ended December
31, 1994 is the result of a shift in the product sales mix to a higher
proportion of higher margin large group systems and multipoint control units.
The decrease in gross margin from the year ended December 31, 1994 to the year
ended December 31, 1995 is the result of an $11.0 million charge taken in
November 1995 to reduce the carrying amount of certain assets, primarily
inventory and capitalized software.

                                      13
<PAGE>
 
The decrease in the gross margin from the seven months ended July 31, 1995 to
the seven months ended July 31, 1996 is due to incremental revenues generated by
the Company's systems integration and service operations which were acquired in
November 1995.  The Company's systems integration and service operations carry a
lower gross margin percentage than its product revenues such that the Company's
overall gross margin is lower. Although the systems integration and service
revenues related to assets acquired in connection with the ICS Transaction
generally carry a lower gross margin, the systems integration and service
activities also generally carry lower operating expenses than the Company's
other revenue sources.

The increase in gross margin from the nine months ended April 30, 1996 to the
nine months ended April 30, 1997 is the result of an $11.0 million charge taken
in the fourth calendar quarter of 1995 to reduce the carrying amount of certain
assets, primarily inventory and capitalized software.  The results of operations
for the nine months ended April 30, 1997 did not include any such charges.

The Company expects gross margin pressures due to price competitiveness in the
industry, shifts in the product sales mix and anticipated offerings of new
products which may carry a lower gross margin.  The Company expects that overall
price competitiveness in the industry will continue to become more intense as
users of videoconferencing systems attempt to balance performance, functionality
and cost.  The Company's gross margin is subject to fluctuation based on
pricing, production costs and sales mix.

Selling, general and administrative

Selling, general and administrative expenses of $62.5 million in 1995 increased
by 19% from $52.5 million in 1994, which increased by 24% from $42.3 million in
1993. Selling, general and administrative expenses were 33% of revenues for each
year in the three year period ended December 31, 1995. Selling, general and
administrative expenses increased during each of the years in the three year
period ended December 31, 1995 due to increased investments in sales and
marketing to increase the Company's market penetration and revenues. Although
selling, general and administrative expenses represented the same percentage of
revenues for each year in the three year period ended December 31, 1995, these
expenses would have increased at a slower rate than the growth in revenues
during these periods but for a $4.1 million charge taken by the Company in 1995
to restructure its business. The charge related to provisions for doubtful
accounts and reductions in the carrying values of certain assets.

Selling, general and administrative expenses increased from $31.4 million for
the seven months ended July 31, 1995 to $38.8 million for the seven months ended
July 31, 1996, an increase of 24%. Selling, general and administrative expenses
were 32% and 40% of revenues for the seven months ended July 31, 1995 and 1996.
Selling, general and administrative expenses increased from the seven months
ended July 31, 1995 to the seven months ended July 31, 1996 due to the
incremental selling, general and administrative expenses associated with the
systems integration and service operations acquired in connection with the ICS
Transaction in the fourth calendar quarter of 1995. Selling, general and
administrative expenses increased as a percentage of revenues from the seven
months ended July 31, 1995 to the seven months ended July 31, 1996 as a result
of slower growth in revenues during the seven months ended July 31, 1996 due to
product transitions.

                                      14
<PAGE>
 
Selling, general and administrative expenses decreased from $52.8 million for
the nine months ended April 30, 1996 to $49.0 million for the nine months ended
April 30, 1997, a decrease of 7%. Selling, general and administrative expenses
were 37% and 34% of revenues for the nine months ended April 30, 1996 and 1997.
Selling, general and administrative expenses decreased from the nine months
ended April 30, 1996 to the nine months ended April 30, 1997 as a result of an
additional $1.7 million charge taken by the Company during the nine months ended
April 30, 1996 to restructure its business. The restructuring resulted in a
lower expense base for the Company's selling, general and administrative
activities. Selling, general and administrative expenses decreased as a
percentage of revenues from the nine months ended April 30, 1996 to the nine
months ended April 30, 1997 due to an increase in revenues during the nine
months ended April 30, 1997 (primarily as a result of increased service revenues
during this period) and a decrease in selling, general and administrative
expenses during the nine months ended April 30, 1997 due to the restructuring
activities.

Research and development expense

Research and development expenses of $21.3 million in 1995 increased by 12% from
$19.0 million in 1994, which increased by 1% from $18.8 million in 1993.
Research and development expenses were 15%, 11%, and 11% of revenues for the
years ended December 31, 1993, 1994 and 1995. Research and development expenses
increased in each year during the three year period ended December 31, 1995 due
to increased research and development investments made by the Company to develop
new products.  The Company began to increase research and development activities
in 1993 to produce new products, including a platform for its personal desktop
system, a small group system, and its second generation multipoint control unit.
New products developed in one period resulted in increased revenues in
subsequent periods resulting in a decline in research and development expenses
as a percentage of revenues.   The decline in research and development expenses
as a percentage of revenues from 1993 to 1995 is also attributable to increased
capitalization of software costs related to the development of new software
during 1994 and 1995 for more complex products with higher functionality.

Research and development expenses increased from $11.9 million for the seven
months ended July 31, 1995 to $16.3 million for the seven months ended July 31,
1996, an increase of 37%. Research and development expenses were 12% and 17% of
revenues for the seven months ended July 31, 1995 and 1996.  Research and
development expenses increased from the seven months ended July 31, 1995 to the
seven months ended July 31, 1996 as a result of the Company's efforts to develop
its Leadership Conferencing and Team Conferencing systems which were
introduced at the end of calendar 1995 and the beginning of calendar 1996,
respectively.  Research and development expenses also increased as a result of
the reassignment of Company research and development personnel who had been
involved with the Intel joint development projects in 1995 to the Company's
other projects (see Note 9 to the Company's Supplemental Consolidated Financial
Statements).  Additionally, research and development expenses increased in
amount and as a percentage of revenues as a result of the Company focusing less
of its development efforts on software development during the seven months ended
July 31, 1996 which resulted in less capitalization of development costs related
to software development.

Research and development expenses were consistent at $18.6 million for the nine
months ended April 30, 1996 and $18.5 million for the nine months ended April
30, 1997.  Research and development expenses were 17% and 13% of revenues for
the nine months ended April 30, 1996 and 1997. Research and development expenses
decreased as a percentage of 

                                      15
<PAGE>
 
revenues due to the additional revenues generated by the Company's systems
integration and service operations acquired in connection with the ICS
Transaction in November 1995, which do not carry any related research and
development costs.

The market for the Company's products is characterized by rapidly changing
technology, evolving industry standards and frequent product introductions.  New
products are generally characterized by increased functionality and better
picture quality at lower bandwidths and at reduced prices.  The introduction of
products, by either the Company or its competitors, embodying new technology and
the emergence of new industry standards may render existing products obsolete
and unmarketable.  The Company's ability to successfully develop and introduce
on a timely basis new and enhanced products that embody new technology,
anticipate and incorporate evolving industry standards and achieve levels of
functionality and prices acceptable to the market will be a significant factor
in the Company's ability to grow and to remain competitive. Although the
percentage of revenues invested by the Company in research and development may
vary from period to period, the Company is committed to investing in its
research and development programs.

Interest income and expense

Interest income was $1.3 million, $1.1 million and $1.8 million for the years
ended December 31, 1993, 1994 and 1995; $0.6 million and $1.9 million for the
seven months ended July 31, 1995 and 1996; and $2.3 million and $1.8 million for
the nine months ended April 30, 1996 and 1997.  Changes in interest income are
based on interest rates earned on invested cash and cash balances available for
investment.  Interest income increased during the year ended December 31, 1995
in comparison with the years ended December 31, 1993 and 1994 and increased
during the seven months ended July 31, 1996 in comparison with the seven months
ended July 31, 1995 due to an increase in the Company's cash and investment
balances resulting from the completion of a secondary offering in October 1995
which generated net proceeds of approximately $57.0 million.  Interest income
earned during the nine months ended April 30, 1997 was lower than that earned
during the nine months ended April 30, 1996 as a result of lower cash and
investment balances maintained by the Company during the nine months ended April
30, 1997.

Interest expense was $0.8 million, $0.8 million, and $1.1 million for the years
ended December 31, 1993, 1994 and 1995; $0.7 million and $0.4 million for the
seven months ended July 31, 1995 and 1996; and $0.8 million and $0.9 million for
the nine months ended April 30, 1996 and 1997.  Interest expense increased
during the year ended December 31, 1995 from the amounts incurred during the
years ended December 31, 1993 and 1994 as a result of higher average borrowings
at higher interest rates during the year ended December 31, 1995.  The Company
incurred less interest expense during the seven months ended July 31, 1996 in
comparison with the seven months ended July 31, 1995 as a result of a decrease
in average borrowings during the seven months ended July 31, 1996.  Interest
expense was consistent during the nine months ended April 30, 1996 and 1997 due
to a decrease in average borrowings during the nine months ended April 30, 1997,
offset by higher interest rates during that same period.

Income Taxes

The Company has experienced substantial changes in ownership as defined by the
Internal Revenue Code.  These changes result in annual limitations of the amount
of net operating loss carryforwards generated prior to each change in ownership
which can be utilized to offset future taxable income. At July 31, 1996, the
Company had total domestic net operating loss 

                                      16
<PAGE>
 
carryforwards of approximately $97.2 million which expire from 1999 through
2011. The portion of this carryforward available for utilization during fiscal
1997 (in consideration of annual limitations) is $18.1 million. In each year
subsequent to fiscal 1997, an additional $3.1 million will become available for
utilization through 2004.

Discontinued Operations

In November 1995, the Company adopted a plan to discontinue operations of its
broadcast products division and focus its efforts and resources in developing
and marketing videoconferencing products.  The Company subsequently developed a
restructuring plan for its videoconferencing products division which resulted in
adjustments that were recorded during the year ended December 31, 1995 related
to the carrying amounts of certain assets, primarily inventories, capitalized
software development costs and accounts receivable.  During the seven months
ended July 31, 1996, the Company also reduced its workforce and identified a
number of offices that would be closed.  Severance and other expenses totaling
approximately $1.7 million associated with these actions are reflected in the
result of operations for the seven months ended July 31, 1996.

In June 1996, the Company completed the sale of certain assets of its broadcast
products division.  During the nine months ended April 30, 1997, the Company
revised the amount of loss associated with disposing of the broadcast products
division and recorded an additional charge of $6.7 million, primarily due to
additional at-risk receivables that were subsequently identified (see Note 6 to
the Supplemental Consolidated Financial Statements).

Net income (loss)

The Company generated net losses from continuing operations of $21.5 million,
$4.8 million, and $17.3 million for the years ended December 31, 1993, 1994 and
1995; $4.3 million and $18.5 million for the seven months ended July 31, 1995
and 1996;  and $25.8 million and $9.7 million for the nine months ended April
30, 1996 and 1997.

The reduction of the net loss from the year ended December 31, 1993 to the year
ended December 31, 1994 was the result of improved gross margins and growth in
revenues at a higher rate than growth in operating expenses.  The increase in
the net loss from the year ended December 31, 1994 to the year ended December
31, 1995 is the result of reduced gross margins due to restructuring charges
taken during the year ended December 31, 1995 in connection with the
restructuring of the Company's videoconferencing products division and an
increase in operating expenses at a higher rate than the growth in revenues
during the year ended December 31, 1995.

The increase in the net loss from the seven months ended July 31, 1995 to the
seven months ended July 31, 1996 and the decrease in the net loss from the nine
months ended April 30, 1996 to the nine months ended April 30, 1997 is the
result of charges taken during the seven months ended July 31, 1996 and the nine
months ended April 30, 1996 related to the discontinuance of the Company's
broadcast products division and the restructuring of its videoconferencing
products division.

Other factors affecting results of operations

The integration of operations following the Merger will require the dedication
of management resources which will temporarily detract from attention to the
day-to-day business of the 

                                      17
<PAGE>
 
combined company. The difficulties of integration may be increased by the
necessity of integrating personnel with disparate business backgrounds and
combining two different corporate cultures. Following the Merger, the Company is
attempting to reduce expenses by the elimination of duplicative or unnecessary
facilities, employees, marketing programs and other expenses. Subsequent to such
reductions, the Company intends to reinvest much of these cost savings in
programs aligned with its current strategic initiatives. There can be no
assurance that the Company will be able to reduce expenses in this fashion, that
there will not be high costs associated with such activities, that such
reductions will not result in a decrease in revenues or that there will not be
other material adverse effects of such activities. Such effects could materially
reduce the earnings of the combined company during the transition period.
Following the Merger, VTEL also is seeking to sell to former CLI customers VTEL
products that have higher gross profit margins than the former CLI products that
had been purchased by such customers. There can be no assurance that this effort
at product transition or that the integration of the product lines of the two
companies will not have material adverse effects on results of operations. The
Company expects to incur a charge in the quarter ending July 31, 1997, currently
estimated to be in the range of $25 to $30 million, to reflect the combination
of the two companies, including the elimination of duplicate facilities,
severance costs relating to employee terminations, the write-off of certain
intangibles, property and equipment, receivables and inventories, discharge and
accruals of contingent liabilities and payment of transaction costs. This amount
is a preliminary estimate only and is therefore subject to change. In addition,
there can be no assurance that the Company will not incur additional charges in
subsequent quarters to reflect costs associated with the Merger.

The markets for the Company's products are characterized by a highly competitive
and rapidly changing environment in which operating results are subject to the
effects of frequent product introductions, manufacturing technology innovations
and rapid fluctuations in product demand.  While the Company attempts to
identify and respond to these changes as soon as possible, prediction of and
reaction to such events will be an ongoing challenge and may result in revenue
shortfalls during certain periods of time.

The Company's future results of operations and financial condition could be
impacted by the following factors, among others: trends in the videoconferencing
market segment, introduction of new products by competitors, increased
competition due to the entrance of other companies into the videoconferencing
market segment -especially more established companies with greater resources
than those of the Company, delay in the introduction of higher performance
products, market acceptance of new products introduced by the Company, price
competition, interruption of the supply of low-cost products from third-party
manufacturers, changes in general economic conditions in any of the countries in
which the Company does business, adverse legal disputes and delays in purchases
relating to federal government procurement.

There can be no assurance that the present and potential customers of the
Company will continue their current buying patterns without regard to the
Merger, and any significant delay or reduction in orders could have an adverse
effect on the near-term business and results of operations of the combined
company.

Generally, the shares issued by the Company to consummate the Merger are freely
tradable, subject to certain resale restrictions for affiliates pursuant to
Rules 144 or 145 under the Securities Act.  An aggregate of approximately 1.1
million of the shares issued in the Merger are beneficially owned by affiliates
of CLI and therefore, subject to resale restrictions.  However, the Company has
agreed to provide certain registration rights to the holders of such shares.

                                      18
<PAGE>
 
The sale of a significant number of the foregoing shares may cause substantial
fluctuations in the price of the Company's Common Stock over short time periods.

Due to the factors noted above and elsewhere in Management's Discussion and
Analysis of Financial Condition and Results of Operations, the Company's past
earnings and stock price have been, and future earnings and stock price
potentially may be, subject to significant volatility, particularly on a
quarterly basis.  Past financial performance should not be considered a reliable
indicator of future performance and investors are cautioned in using historical
trends to anticipate results or trends in future periods.  Any shortfall in
revenue or earnings from the levels anticipated by securities analysts could
have an immediate and significant affect on the trading price of the Company's
Common Stock in any given period.  Also, the Company participates in a highly
dynamic industry which often contributes to the volatility of the Company's
Common Stock price.

Further, this Registration Statement on Form S-3 contains forward-looking
statements, within the meaning of the Private Securities Litigation Reform Act
of 1995, that relate to future results or events and are based on the Company's
current expectations.  There are many factors that affect the Company's business
and results of operations, all of which involve risks and uncertainties that
could cause actual results to differ materially from those reflected in those
forward-looking statements, including the risks discussed above and elsewhere
herein.

Share repurchase program

During the seven months ended July 31, 1996, the Company adopted a share
repurchase program pursuant to which the Company repurchased shares of its
Common Stock in the open market.  The repurchased shares will be issued from
time to time to fulfill requirements for the Company's Common Stock under its
employee stock plans.  Subsequent to July 31, 1996, the Company purchased
455,200 shares of its Common Stock for approximately $3.6 million.  In February
1997, the Company terminated the stock repurchase program.

Liquidity and capital resources

At April 30, 1997, the Company had working capital of $65.7 million, including
$41.4 million in cash, cash equivalents and short-term investments.  Cash used
by operating activities totaled $12.9 million for the year ended December 31,
1993 compared to cash provided by operating activities of $2.9 million and $8.8
million for the years ended December 31, 1994 and 1995.  Cash used by operating
activities was $1.0 million and $11.1 million for the seven months ended July
31, 1995 and 1996. Cash provided by operating activities was $14.1 million and
$2.0 million for the nine months ended April 30, 1996 and 1997. Changes in cash
from operating activities are primarily the result of the net losses or income
generated by the Company and changes in working capital, primarily increases and
decreases in accounts receivable, inventories and accounts payable.

Cash used in investing activities was $11.8 million, $17.8 million and $77.8
million for the years ended December 31, 1993, 1994 and 1995.   The increase in
cash used in investing activities during each year in the three year period
ended December 31, 1995 is the result of increased capital expenditures for
property and equipment used to support the growth in the Company's operations,
primarily sales and marketing and  product development efforts.  Capital
expenditures were $12.7 million, $14.5 million, and $16.8 million for the years
ended December 31, 1993, 1994 and 1995.  The increase in cash used in investing
activities during the year ended December 31, 1995 is the result of the
investment of the proceeds of the Company's secondary offering of its 

                                      19
<PAGE>
 
Common Stock which generated approximately $57.0 million less the cash used of
approximately $10.7 million to purchase the systems integration and service
operations in connection with the ICS Transaction.

Cash used in investing activities was $16.4 million for the seven months ended
July 31, 1995 compared with cash provided by investing activities of $1.2
million for the seven months ended July 31, 1996.  Cash used in investing
activities was primarily the result of capital expenditures.  Capital
expenditures were $11.0 million and $11.1 million for the seven months ended
July 31, 1995 and 1996.  Cash provided by investing activities during the seven
months ended July 31, 1996 included the proceeds from the sale of assets related
to discontinued operations.

Cash used in investing activities was $66.9 million and $1.1 million for the
nine months ended April 30, 1996 and 1997. Cash used in investing activities 
decreased during the nine months ended April 30, 1996 as a result of investing 
activities during the nine months ended April 30, 1996 related to the investment
of the proceeds from the Company's secondary offering which netted approximately
$57.0 million and the approximate $10.7 million paid as the cash portion of the
purchase of the systems integration and service operations in connection with
the ICS Transactions.

Cash provided by financing activities was $33.8 million, $6.0 million and $69.1
million for the years ended December 31, 1993, 1994 and 1995. Cash provided by 
financing activities decreased during the year ended December 31, 1994 in 
comparision with the year ended December 31, 1993 due to financing activities 
during the year ended December 31, 1993 related to the sale of the Company's 
Common Stock which netted approximately $35.2 million. Cash provided by 
financing activities increased during the year ended December 31, 1995 in 
comparision with the year ended December 31, 1994 due to financing activities 
during the year ended December 31, 1995 related to the sale of the Company's 
Common Stock which netted approximately $57.0 million.

Cash provided by financing activities was $4.9 million for the seven months 
ended July 31, 1995 compared to cash used in financing activities of $3.9 
million for the seven months ended July 31, 1996. Cash provided by investing 
activities during the seven months ended July 31, 1995 was related to the sale 
of the Company's Common Stock which netted approximately $4.9 million. Cash used
in financing activities during the seven months ended July 31, 1996 was related 
to the reduction in borrowings of approximately $4.4 million from cash generated
from the sale of the Company's broadcast products division in June 1996.

Cash provided by financing activities was $58.8 million for the nine months 
ended April 30, 1996 compared to cash provided by financing activities of $0.9 
million for the nine months ended April 30, 1997. The cash provided by financing
activities for the nine months ended April 30, 1996 was primarily the result of 
the completion of the Company's secondary offering which netted approximately 
$57.0 million. The cash provided by financing activities for the nine months 
ended April 30, 1997 was the result of the private placement of the Company's 
stock which netted approximately $6.9 million, offset by a reduction in 
borrowings of $4.5 million and cash used to purchase approximately $3.7 million 
of treasury stock under a share repurchase program.

The Company has a $10.0 million revolving line of credit available with a
financial institution. No amounts have been drawn or are outstanding under the 
line of credit. The Company's principal sources of liquidity at April 30, 1997 
consist of $41.4 million of cash, cash equivalents and short-terms investments,
and amounts available under the Company's revolving line of credit.

Recent pronouncements

Effective January 1, 1996, the Company adopted Statement of Financial Accounting
Standards (SFAS) No. 123, "Accounting and Disclosure of  Stock-Based
Compensation."  SFAS No. 123  introduces a fair-value based method of accounting
for stock-based compensation.  It encourages, but does not require, companies to
recognize compensation expense for grants of stock, stock options, and other
equity instruments to employees based on their estimated fair market value on
the date of grant.  The Company has opted to continue to apply the existing
accounting rules contained in Accounting Principles Board (APB) Opinion No. 25,
"Accounting for Stock Issued to Employees." As such, SFAS No. 123 did not have
any effect on the Company's financial position or results of operations.

Effective January 1, 1996, the Company adopted SFAS No. 121, "Accounting for the
Impairment of Long-Lived Assets and for Long-Lived Assets to be Disposed Of."
In accordance with SFAS No. 121, the Company periodically evaluates its long-
lived assets and intangible assets to determine if an impairment has occurred.
The adoption of SFAS No. 121 did not have any effect on the Company's
consolidated financial position or result of operations.

In February 1997, the Financial Accounting Standards Board issued SFAS No. 128,
"Earnings Per Share."  The new standard, which is effective for financial
statements issued for periods ending after December 15, 1997, establishes
standards for computing and presenting earnings per share ("EPS") and upon
adoption requires restatement of all prior period EPS data presented.  The
Company will implement this standard for the year ended July 31, 1998.  The
implementation of the standard will result in the presentation of a basic EPS
calculation in the consolidated financial statements as well as a diluted EPS
calculation.  Under SFAS No. 128, basic and diluted EPS will not differ
materially from the amounts currently reported.

                                      20
<PAGE>
 
                  PLAN OF DISTRIBUTION; SELLING STOCKHOLDERS

     This Prospectus relates to 2,879,829  shares of Common Stock that may be
offered and sold from time to time by the Selling Stockholders.  Set forth below
is information, as of the date hereof, regarding the beneficial ownership of the
Shares by each Selling Stockholder.
<TABLE>
<CAPTION>
 
                                      NUMBER OF SHARES
                                       OF COMMON STOCK    NUMBER OF
                                        BENEFICIALLY      SHARES OF     COMMON STOCK
                                            OWNED           COMMON   BENEFICIALLY OWNED
                                          PRIOR TO          STOCK          AFTER
                                        OFFERING (1)       OFFERED       OFFERING (2)
                                     -------------------  ---------  ------------------
 
SELLING STOCKHOLDERS                                                  NUMBER   PERCENT
- --------------------                                                 --------  --------
<S>                                  <C>                  <C>        <C>       <C>
Infinity Investors Limited (3)..............    965,643     965,643       ---       ---
Seacrest Capital Limited (4)................    263,387     263,387       ---       ---
OTA Limited Partnership (5).................     23,000      23,000       ---       ---
Alpine Capital Partners, Inc. (6)...........     23,000      23,000       ---       ---
Intel Corporation (7).......................  1,672,546   1,604,799    67,747         *     
</TABLE>

____________________

     * indicates less than 1%.

(1)  Unless otherwise indicated, to the knowledge of the Company, the persons
     and entities named in the table have sole voting and sole investment power
     with respect to all shares of Common Stock beneficially owned, subject to
     community property laws where applicable.  Represents those shares of
     Common Stock held by the Selling Stockholders, if any, together with those
     shares that such Selling Stockholder has the right to acquire upon exercise
     of warrants or otherwise within 60 days.

(2)  Assumes that all Shares of Common Stock offered hereby by each Selling
     Stockholder are actually sold.  Such presentation is based on 22.8 million
     shares of Common Stock outstanding as of August 7, 1997.

(3)  Includes 99,393 shares purchasable pursuant to outstanding warrants
     assumed by VTEL in the Merger.  The address of Infinity Investors Limited
     is 27 Wellington Road, Cork, Ireland.

(4)  Includes 27,107 shares purchasable pursuant to outstanding warrants 
     assumed by VTEL in the Merger.  The address of Seacrest Capital Limited is 
     27 Wellington Road, Cork, Ireland.

(5)  The address of OTA Limited Partnership is One Manhattanville Road,
     Purchase, New York 10577.

(6)  The address of Alpine Capital Partners, Inc. is 28 Sutton Place,
     Manhassett, New York 11030.

(7)  The address of Intel Corporation is 2200 Mission College Blvd., Santa
     Clara, California 95052.

     The shares of Common Stock beneficially owned by Infinity Investors Limited
and Seacrest Capital Limited were acquired by each of them in the Merger
pursuant to which VTEL acquired all of the outstanding capital stock of CLI,
effective May 23, 1997.  The shares of Common Stock beneficially owned by OTA
Limited Partnership and Alpine Capital Partners, Inc., and 99,393 shares
beneficially owned by Infinity Investors Limited and 27,107 shares beneficially
owned by Seacrest Capital Limited, represent shares purchasable pursuant to 
outstanding warrants issued by CLI, and assumed by VTEL in the Merger.  In 
connection with the Merger, VTEL agreed to file the Registration Statement of 
which this Prospectus forms a part.

     The shares of Common Stock beneficially owned by Intel Corporation
("Intel") were acquired pursuant to a Common Stock and Warrant Purchase
Agreement, dated October 25, 1993 and transactions related to the warrant issued

                                      21
<PAGE>
 
thereunder, and rights granted to Intel Corporation to purchase shares under a
separate Investor Rights Agreement executed in connection with the Common Stock
and Warrant Purchase Agreement.  The shares also include 155,040 shares acquired
by Intel Corporation from VTEL in lieu of a cash payment due under a separate
Development and License Agreement between Intel and VTEL entered into on October
25, 1993.  VTEL has afforded contractual rights to Intel to require VTEL to
register such shares, and the shares are included in this Prospectus based on
such rights.  In addition, the Company and Intel agreed to indemnify each other
and certain affiliated parties from and against any losses or claims arising out
of, among other things, (1) any untrue statement of a material fact or (2) any
material omission contained or referred to in the Registration Statement.
Insofar as indemnification for liabilities arising under the Securities Act may
be permitted to directors, officers or persons controlling the Company, pursuant
to the foregoing provisions, the Company has been informed that in the opinion
of the Securities and Exchange Commission such indemnification is against public
policy as expressed in the Securities Act and is therefore unenforceable.

     Pursuant to the terms of a Registration Rights Agreement dated May 20,
1997 between the Company, Infinity Investors Limited and Seacrest Capital
Limited (the "Registration Rights Agreement"), the Company has agreed to file
the Registration Statement of which this Prospectus forms a part for the purpose
of registering the potential resale of the Shares and to maintain the
effectiveness of such Registration Statement until May 23, 2000 or until the
Shares have otherwise been sold or are available for resale pursuant to Rules
144 and 145 promulgated under the Securities Act, in each case, as contemplated
by the Registration Rights Agreement.  In addition, the Company and the Selling
Stockholders listed therein agreed to indemnify each other and certain
affiliated parties from and against any losses or claims arising out of, among
other things, (1) any untrue statement of a material fact or (2) any material
omission contained or referred to in the Registration Statement.  Insofar as
indemnification for liabilities arising under the Securities Act may be
permitted to directors, officers or persons controlling the Company, pursuant to
the foregoing provisions, the Company has been informed that in the opinion of
the Securities and Exchange Commission such indemnification is against public
policy as expressed in the Securities Act and is therefore unenforceable.

     Except as specifically set forth herein, none of the Selling Stockholders
has, or within the past three years has had, any position, office or other
material relationship with the Company or any of its predecessors or affiliates.

     VTEL has been advised by the Selling Stockholders that they (or, subject to
applicable law, their pledgees, donees, distributees, transferees or other
successors in interest), intend to sell all or a portion of the Shares offered
by this Prospectus from time to time (i) on the Nasdaq National Market, (ii)
otherwise than on the Nasdaq National Market, in negotiated transactions at
fixed prices which may be changed, at market prices prevailing at the time of
sale or at prices reasonably related thereto or at negotiated prices, or (iii)
by a combination of the foregoing methods of sale (any of which may involve
crosses and block transactions). The Selling Stockholders may effect such
transactions by selling the Shares to or through broker-dealers, and such 
broker-dealers may receive compensation in the form of discounts, concessions or
commissions from the Selling Stockholders and/or the purchasers of the Shares
for which such broker-dealers may act as agent or to whom they may sell as
principal, or both. VTEL is not aware as of the date of this Prospectus of any
agreements between any of the Selling Stockholders and any broker-dealers with
respect to the sale of the Shares offered by this Prospectus. In connection with
distributions of the Shares or otherwise, the Selling Stockholders may enter
into hedging transactions with broker-dealers. In connection with such
transactions, broker-dealers may engage in short sales of the Shares registered
hereunder in the course of hedging the positions they assume with Selling
Stockholders. The Selling Stockholders may also sell shares of VTEL Common Stock
short and deliver the Shares to close out such short positions. The Selling
Stockholders may also enter into option or other transactions with broker-
dealers which require the delivery to the broker-dealer of the Shares registered
hereunder, which the broker-dealer may resell pursuant to this Prospectus. The
Selling Stockholders may also pledge the Shares registered hereunder to a broker
or dealer and upon a default, the broker or dealer may effect sales of the
pledged Shares pursuant to this Prospectus.

     The Selling Stockholders and any broker, dealer or other agent executing
sell orders on behalf of the Selling Stockholders may be deemed to be
"underwriters" within the meaning of the Securities Act, in which event
commissions received by any such broker, dealer or agent and profit on any
resale of the Shares of principal may be deemed to be underwriting commissions
under the Securities Act.  Such commissions received by a broker, dealer or
agent may be in excess of customary compensation.  The Shares may also be sold
in accordance with Section 4(1) of the Securities Act or Rule 144 and Rule 145
under the Securities Act.

                                      22
<PAGE>
 
     Information as to whether underwriters who may be selected by the Selling
Stockholders, or any other broker-dealer, are acting as principal or agent for
the Selling Stockholders, the compensation to be received by underwriters who
may be selected by the Selling Stockholders, or any broker-dealer, acting as
principal or agent for the Selling Stockholders and the compensation to be
received by other broker-dealers, will, to the extent required, be set forth in
a supplement to this Prospectus (the "Prospectus Supplement").  Any dealer or
broker participating in any distribution of the Shares may be required to
deliver a copy of this Prospectus, including the Prospectus Supplement, if any,
to any person who purchases any of the Shares from or through such dealer or
broker.

     All expenses of registration incurred in connection with the offering will
be borne by VTEL.  All selling and other expenses incurred by the Selling
Stockholders will be borne by the Selling Stockholders.

     The Selling Stockholders will be subject to applicable provisions of the
Exchange Act and the rules and regulations thereunder, including without
limitation, Rule 102 under Regulation M, which provisions may limit the timing
of purchases and sales of any of the Common Stock by the Selling Stockholders.
Rule 102 under Regulation M provides, with certain exceptions, that it is
unlawful for a selling shareholder or its affiliated purchaser to, directly or
indirectly, bid for or purchase or attempt to induce any person to bid for or
purchase, for an account in which the selling shareholder or affiliated
purchaser has a beneficial interest in any securities that are the subject of
the distribution during the applicable restricted period under Regulation M.
All of the foregoing may affect the marketability of the Common Stock.  The
Company will require each Selling Stockholder, and his or her broker if
applicable, to provide a letter that acknowledges his compliance with Regulation
M under the Exchange Act before authorizing the transfer of such Selling
Stockholder's Shares.

     The Selling Stockholders may offer all of the Shares for sale. Further,
because it is possible that a significant number of Shares could be sold at the
same time hereunder, such sales, or the possibility thereof, may have a
depressive effect on the market price of the Company's Common Stock.

                                 LEGAL MATTERS

     The validity of the Shares being offered hereby will be passed upon for
VTEL by Jenkens & Gilchrist, a Professional Corporation, Dallas, Texas.

                                    EXPERTS

     The supplemental consolidated financial statements of VTEL Corporation as
of December 31, 1994 and 1995 and July 31, 1996 and for each of the three years
in the period ended December 31, 1995 and the seven months ended July 31, 1996
included in this Prospectus (the "Supplemental Consolidated Financial
Statements") have been audited by Price Waterhouse LLP, independent accountants,
and, insofar as the Supplemental Consolidated Financial Statements relate to
Compression Labs, Incorporated as of December 31, 1994 and 1995 and for each of
the three years in the period ended December 31, 1995, the report of Price
Waterhouse LLP is based on the audits by KPMG Peat Marwick LLP, independent
accountants, whose reports thereon appear herein.  The Supplemental Consolidated
Financial Statements have been so included in reliance on the reports of such
independent accountants given on the authority of such firms as experts in
auditing and accounting.

     The consolidated financial statements of VTEL Corporation incorporated in
this Prospectus by reference to VTEL Corporation's Annual Report on Form 10-K as
of July 31, 1996, which Form 10-K includes the consolidated financial statements
of VTEL Corporation as of December 31, 1994 and 1995 and July 31, 1996, and for
each of the three years in the period ended December 31, 1995 and the seven
months ended July 31, 1996, have been so incorporated in reliance on the report
of Price Waterhouse LLP, independent accountants, given on the authority of said
firm as experts in auditing and accounting.

                                      23
<PAGE>
 
                         INDEX TO FINANCIAL STATEMENTS

 
Report of Independent Accountants.......................................... F-2
 
Independent Auditors' Report............................................... F-4
 
Financial Statements:
 
   Supplemental Consolidated Balance Sheet as of December 31, 1994
      and 1995, July 31, 1996 and April 30, 1997 (unaudited)............... F-5
 
   Supplemental Consolidated Statement of Operations for the years ended
      December 31, 1993, 1994 and 1995, the seven months ended July 31, 
      1995 (unaudited) and 1996, and the nine months ended April 30, 1996 
      and 1997 (unaudited)................................................. F-6
 
   Supplemental Consolidated Statement of Changes in Stockholders' Equity 
      for the years ended December 31, 1993, 1994 and 1995, the seven 
      months ended July 31, 1996 and the nine months ended April 30, 1997
      (unaudited).......................................................... F-7
 
   Supplemental Consolidated Statement of Cash Flows for the years ended
      December 31, 1993, 1994 and 1995, the seven months ended July 31, 
      1995 (unaudited) and 1996, and the nine months ended April 30, 1996 
      and 1997 (unaudited)................................................. F-8
 
   Notes to Supplemental Consolidated Financial Statements................. F-9
 

                                      F-1
<PAGE>
 
                       REPORT OF INDEPENDENT ACCOUNTANTS


To the Board of Directors and
Stockholders of VTEL Corporation


In our opinion, the consolidated balance sheet and the related consolidated
statements of operations and changes in stockholders' equity and of cash flows
(not presented herein) present fairly, in all material respects, the financial
position of VTEL Corporation and its subsidiaries at December 31, 1994 and 1995
and July 31, 1996, and the results of their operations and their cash flows for
each of the three years in the period ended December 31, 1995 and for the seven
months ended July 31, 1996, in conformity with generally accepted accounting
principles. These financial statements are the responsibility of the Company's
management; our responsibility is to express an opinion on these financial
statements based on our audits. We conducted our audits of these statements in
accordance with generally accepted auditing standards which require that we plan
and perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement.  An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements, assessing the accounting principles used and significant estimates
made by management, and evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for the opinion expressed
above.

As described in Note 1, on May 23, 1997, VTEL Corporation merged with
Compression Labs, Incorporated in a transaction accounted for as a pooling of
interests.  The accompanying supplementary consolidated financial statements
give retroactive effect to the merger.

In our opinion, based upon our audits and the report of other auditors, the
accompanying supplementary consolidated balance sheet and the related
supplementary consolidated statements of operations and changes in stockholders'
equity and of cash flows present fairly, in all material respects, the financial
position of VTEL Corporation and its subsidiaries at December 31, 1994 and 1995
and July 31, 1996, and the results of their operations and their cash flows for
each of the three years in the period ended December 31, 1995 and for the seven
months ended July 31, 1996, in conformity with generally accepted accounting
principles. These financial statements are the responsibility of the Company's
management; our responsibility is to express an opinion on these financial
statements based on our audits.  We did not audit the financial statements of
Compression Labs, Incorporated, which statements reflect total assets of
$131,651,000 and $104,753,000 at December 31, 1994 and 1995, respectively, and
total revenues of $95,095,000, $114,958,000 and $112,979,000 for the years ended
December 31, 1993, 1994 and 1995, 

                                      F-2
<PAGE>
 
To the Board of Directors and
Stockholders of VTEL Corporation
Page 2


respectively. Those statements were audited by other auditors whose report
thereon has been furnished to us, and our opinion expressed herein, insofar as
it related to the amounts included for Compression Labs, Incorporated, is based
solely on the report of the other auditors. We conducted our audits of these
statements in accordance with generally accepted auditing standards which
require that we plan and perform the audit to obtain reasonable assurance about
whether the financial statements are free of material misstatement. An audit
includes examining, on a test basis, evidence supporting the amounts and
disclosures in the financial statements, assessing the accounting principles
used and significant estimates made by management, and evaluating the overall
financial statement presentation. We believe that our audits and the report of
other auditors provide a reasonable basis for the opinion expressed above.



PRICE WATERHOUSE LLP

Austin, Texas
July 24, 1997

                                      F-3
<PAGE>
 
                         INDEPENDENT AUDITORS' REPORT


The Stockholders and Board of Directors
of Compression Labs, Incorporated

We have audited the consolidated balance sheets of Compression Labs,
Incorporated and subsidiaries as of December 31, 1994 and 1995, and the related
consolidated statements of operations, stockholders' equity, and cash flows for
each of the years in the three-year period ended December 31, 1995 (not
presented herein).  These consolidated financial statements are the
responsibility of the Company's management.  Our responsibility is to express an
opinion on these consolidated financial statements based on our audits.

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

In our opinion, the consolidated financial statements referred to above present
fairly, in all material respects, the financial position of Compression Labs,
Incorporated and subsidiaries as of December 31, 1994 and 1995, and the results
of their operations and their cash flows for each of the years in the three-year
period ended December 31, 1995, in conformity with generally accepted accounting
principles.



KPMG Peat Marwick LLP

San Jose, California
March 13, 1996

                                      F-4
<PAGE>
 
VTEL CORPORATION
Supplemental Consolidated Balance Sheet
(in thousands, except share data)
- --------------------------------------------------------------------------------
<TABLE> 
<CAPTION> 

                                                              December 31,
                                                        ----------------------     July 31,    April 30,
                                                           1994         1995        1996         1997
                                                        ---------    ---------    ---------    ---------
                                                                                              (unaudited)
<S>                                                     <C>          <C>          <C>         <C> 
ASSETS
Current assets:
   Cash and equivalents                                 $  15,504    $  15,548    $   1,973    $   3,708
   Short-term investments                                  17,249       59,984       48,307       37,730
   Accounts receivable, net of allowance for
     doubtful accounts of $2,137, $10,213, $7,875 and
     $11,718, respectively                                 66,697       65,673       47,958       42,241
   Inventories                                             35,165       32,552       29,308       25,941
   Prepaid expenses and other current assets                3,780        2,137        2,399        3,824
                                                        ---------    ---------    ---------    ---------
       Total current assets                               138,395      175,894      129,945      113,444

Property and equipment, net                                25,794       26,922       25,792       24,872
Intangible assets, net                                          -       14,285       13,730       13,008
Capitalized software, net                                  11,868        3,828        3,561        3,540
Other assets                                                2,029        2,132        2,064        3,652
                                                        ---------    ---------    ---------    ---------
                                                        $ 178,086    $ 223,061    $ 175,092    $ 158,516
                                                        =========    =========    =========    =========


LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
   Short-term debt                                      $   9,803     $ 13,452    $  10,656    $   5,511
   Current portion of capital lease obligations               750          506            -            -
   Accounts payable                                        23,889       31,319       20,694       20,981
   Accrued compensation and benefits                        5,123        4,954        4,203        1,639
   Accrued warranty expense                                   750        1,061          697          290
   Other accrued liabilities                                3,828        5,951        5,891        7,554
   Accrued expenses, discontinued operations                    -       13,887          657            -
   Research and development advance                         1,096          906          906          901
   Deferred revenue                                         8,068       10,528        9,150       10,894
                                                        ---------    ---------    ---------    ---------
       Total current liabilities                           53,307       82,564       52,854       47,770

Long-term debt and capital lease obligations                  494          985            -            -
Other liabilities                                             100            -            -            -
                                                        ---------    ---------    ---------    ---------
       Total liabilities                                   53,901       83,549       52,854       47,770
                                                        ---------    ---------    ---------    ---------

Commitments and contingencies (Note 12)

Stockholders' equity:
   Preferred stock, $.01 par value; 10,000,000
     authorized; none issued or outstanding                     -            -            -            -
   Common stock, $.01 par value; 25,000,000
     authorized; 16,759,000, 20,892,000, 21,498,000,
     and 22,485,000 issued and outstanding,
     respectively                                             168          209          215          225
   Additional paid-in capital                             175,235      244,352      245,585      253,622
   Accumulated deficit                                    (51,363)    (105,206)    (123,713)    (141,041)
   Treasury stock                                               -            -            -       (1,928)
   Other                                                      145          157          151         (132)
                                                        ---------    ---------    ---------    ---------
       Total stockholders' equity                         124,185      139,512      122,238      110,746
                                                        ---------    ---------    ---------    ---------
                                                        $ 178,086    $ 223,061    $ 175,092    $ 158,516
                                                        =========    =========    =========    =========
</TABLE> 

      The accompanying notes are an integral part of these supplemental 
                      consolidated financial statements.

                                      F-5
<PAGE>
 
VTEL CORPORATION
Supplemental Consolidated Statement of Operations
(in thousands, except per share data)
- -------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                               For the Years Ended           For the Seven Months     For the Nine Months
                                                  December 31,                 Ended July 31,            Ended April 30,
                                      ------------------------------------  ----------------------   ---------------------
                                                                                                    
                                         1993        1994         1995        1995         1996        1996        1997
                                      ----------- -----------  -----------  -----------  -----------  ----------  ---------
                                                                            (unaudited)                    (unaudited)
Revenues:
<S>                                   <C>         <C>          <C>          <C>         <C>          <C>         <C>
   Products                           $  121,244  $  159,350   $  169,455   $   89,207   $   74,098   $ 117,102   $ 114,876
   Services and other                      5,303       9,839       21,619        8,872       22,864      24,926      30,100
                                      ----------  ----------   ----------   ----------   ----------   ---------   ---------
                                         126,547     169,189      191,074       98,079       96,962     142,028     144,976
                                      ----------  ----------   ----------   ----------   ----------   ---------   ---------
Cost of sales:
   Products                               82,196      94,583      109,653       52,523       44,390      78,746      64,995
   Services and other                      5,262       8,226       14,578        5,585       16,592      18,656      21,939
                                      ----------  ----------   ----------   ----------   ----------   ---------   ---------
                                          87,458     102,809      124,231       58,108       60,982      97,402      86,934
                                      ----------  ----------   ----------   ----------   ----------   ---------   ---------
Gross margin                              39,089      66,380       66,843       39,971       35,980      44,626      58,042
                                      ----------  ----------   ----------   ----------   ----------   ---------   ---------

Selling, general and administrative       42,276      52,502       62,511       31,397       38,842      52,816      49,006
Research and development                  18,802      19,004       21,283       11,878       16,274      18,609      18,514
Amortization of intangible assets              -           -           80            -          560         400         720
Restructuring expense                          -           -            -            -          553           -           -
Settlement of litigation                       -           -          897          897            -           -         500
                                      ----------  ----------   ----------   ----------   ----------   ---------   ---------
   Total operating expenses               61,078      71,506       84,771       44,172       56,229      71,825      68,740
                                      ----------  ----------   ----------   ----------   ----------   ---------   ---------

Income (loss) from operations            (21,989)     (5,126)     (17,928)      (4,201)     (20,249)    (27,199)    (10,698)
                                      ----------  ----------   ----------   ----------   ----------   ---------   ---------

Other income (expense):
   Interest income                         1,312       1,051        1,802          699        1,901       2,278       1,762
   Interest expense                         (846)       (804)      (1,142)        (655)        (424)       (764)       (870)
   Other                                       5         103           54          164          265          97         134
                                      ----------  ----------   ----------   ----------   ----------   ---------   ---------
                                             471         350          714          208        1,742       1,611       1,026
                                      ----------  ----------   ----------   ----------   ----------   ---------   ---------

Loss from continuing operations
   before taxes                          (21,518)     (4,776)     (17,214)      (3,993)     (18,507)    (25,588)     (9,672)
(Provision) benefit for income taxes           -         (40)         (87)        (342)           -        (211)         12
                                      ----------  ----------   ----------   ----------   ----------   ---------   ---------
Net loss from continuing
   operations                            (21,518)     (4,816)     (17,301)      (4,335)     (18,507)    (25,799)     (9,660)
                                      ----------  ----------   ----------   ----------   ----------   ---------   ---------
Discontinued operations:
   Income (loss) from operations           8,701       4,985       (1,941)         524            -      (2,465)          -
   Loss on disposal                            -           -      (34,601)           -            -     (34,601)     (6,863)
                                      ----------  ----------   ----------   ----------   ----------   ---------   ---------
Net income (loss) from
   discontinued operations                 8,701       4,985      (36,542)         524            -     (37,066)     (6,863)
                                      ----------  ----------   ----------   ----------   ----------   ---------   ---------

Net income (loss)                     $  (12,817) $      169   $  (53,843)  $   (3,811)  $  (18,507)  $ (62,865)  $ (16,523)
                                      ==========  ==========   ==========   ==========   ==========   =========   =========

Computation of net income (loss) 
 per share:
Net loss from continuing operations   $  (21,518) $   (4,816)  $  (17,301)  $   (4,335)  $  (18,507)  $ (25,799)  $  (9,660)
Deemed preferred stock dividend
   related to conversion discount              -           -            -            -            -           -      (2,527)
                                      ----------  ----------   ----------   ----------   ----------   ---------   ---------
Adjusted net loss from continuing
   operations                            (21,518)     (4,816)     (17,301)      (4,335)     (18,507)    (25,799)    (12,187)
Net income (loss) from discontinued
   operations                              8,701       4,985      (36,542)         524            -     (37,066)     (6,863)
                                      ----------  ----------   ----------   ----------   ----------   ---------   ---------
Net income (loss) applicable to
   common stock                       $  (12,817) $      169   $  (53,843)  $   (3,811)  $  (18,507)  $ (62,865)  $ (19,050)
                                      ==========  ==========   ==========   ==========   ==========   =========   =========

Net loss per share from
   continuing operations              $    (1.51) $    (0.27)  $    (0.90)  $    (0.24)  $    (0.87)  $   (1.27)  $   (0.56)
Net income (loss) per share
   from discontinued operations             0.61        0.28        (1.91)        0.03            -       (1.82)      (0.31)
                                      ----------  ----------   ----------   ----------   ----------   ---------   ---------
Net income (loss) per share           $    (0.90) $     0.01   $    (2.81)  $    (0.21)  $    (0.87)  $   (3.09)  $   (0.87)
                                      ==========  ==========   ==========   ==========   ==========   =========   =========

Weighted average shares outstanding       14,242      17,518       19,131       17,821       21,393      20,377      21,863
                                      ----------- -----------  ----------   ----------   ----------   ---------   ---------
</TABLE>

      The accompanying notes are an integral part of these supplemental 
                      consolidated financial statements.

                                      F-6
<PAGE>
 
VTEL CORPORATION
Supplemental Consolidated Statement of Changes in Stockholders' Equity
(in thousands)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                  Common Stock                                              
                                            -----------------------                                            Total    
                                            Number of                  Paid-in     Accumulated              Stockholders'
                                              Shares      Amount       Capital       Deficit       Other        Equity
                                            ---------    ---------    ---------    -----------  ----------  -------------
Balance at December 31, 1992,
<S>                                         <C>          <C>          <C>          <C>          <C>          <C>      
   as previously reported                       8,607    $      86    $  52,923    $ (14,636)   $     (67)   $  38,306
Pooling of interests with CLI                   5,248           53       80,903      (24,079)           -       56,877
Proceeds from sale of stock                     1,952           19       30,451            -            -       30,470
Proceeds from stock issued
   under employee plans                           383            4        3,071            -            -        3,075
Exercise of stock warrants                        111            1        1,728            -            -        1,729
Amortization of unearned
 compensation                                       -            -            -            -           23           23
Foreign currency translation
   adjustment                                       -            -            -            -          (68)         (68)
Net loss                                            -            -            -      (12,817)           -      (12,817)
                                            ---------    ---------    ---------    ---------    ---------    ---------
Balance at December 31, 1993                   16,301          163      169,076      (51,532)        (112)     117,595
Proceeds from sale of stock                        68            1        1,972            -            -        1,973
Proceeds from stock issued
   under employee plans                           360            4        3,659            -            -        3,663
Exercise of stock warrants                         30            -          528            -            -          528
Amortization of unearned
   compensation                                     -            -            -            -           23           23
Foreign currency translation
   adjustment                                       -            -            -            -          234          234
Net loss                                            -            -            -          169            -          169
                                            ---------    ---------    ---------    ---------    ---------    ---------
Balance at December 31, 1994                   16,759          168      175,235      (51,363)         145      124,185
Proceeds from sale of stock                     3,312           33       61,927            -            -       61,960
Proceeds from stock issued
   under employee plans                           546            5        3,220            -            -        3,225
Stock issued for acquired assets (Note 3)         260            3        3,721            -            -        3,724
Exercise of stock warrants                         15            -          249            -            -          249
Amortization of unearned
   compensation                                     -            -            -            -           21           21
Foreign currency translation
   adjustment                                       -            -            -            -           (9)          (9)
Net loss                                            -            -            -      (53,843)           -      (53,843)
                                            ---------    ---------    ---------    ---------    ---------    ---------
Balance at December 31, 1995                   20,892          209      244,352     (105,206)         157      139,512
Proceeds from stock issued
   under employee plans                           178            2        1,237            -            -        1,239
Exercise of stock warrants                        428            4           (4)           -            -            -
Foreign currency translation
   adjustment                                       -            -            -            -           (6)          (6)
Net loss                                            -            -            -      (18,507)           -      (18,507)
                                            ---------    ---------    ---------    ---------    ---------    ---------
Balance at July 31, 1996                       21,498          215      245,585     (123,713)         151      122,238
Proceeds from sale of stock                     1,103           11        6,841            -            -        6,852
Proceeds from stock issued
   under employee plans                           136            1        1,246            -            -        1,247
Unearned compensation                               -            -            -            -         (364)        (364)
Amortization of unearned
   compensation                                     -            -            -            -          269          269
Foreign currency translation
   adjustment                                       -            -            -            -         (188)        (188)
Net purchase of treasury stock                   (239)          (2)           -         (805)      (1,928)      (2,735)
Other                                               -            -          (50)           -            -          (50)
Net loss                                            -            -            -      (16,523)           -      (16,523)
                                            ---------    ---------    ---------    ---------    ---------    ---------
Balance at April 30, 1997 (unaudited)          22,498    $     225    $ 253,622    $(141,041)   $  (2,060)   $ 110,746
                                            =========    =========    =========    =========    =========    =========
</TABLE> 

      The accompanying notes are an integral part of these supplemental 
                      consolidated financial statements.

                                      F-7
<PAGE>
 
VTEL CORPORATION
Supplemental Consolidated Statement of Cash Flows
(in thousands)
- --------------------------------------------------------------------------------
<TABLE> 
<CAPTION> 

                                                           For the Years Ended          For the Seven Months    For the Nine Months
                                                                 December 31,              Ended July 31,        Ended April 30,
                                                     --------------------------------   --------------------   --------------------
                                                        1993       1994       1995        1995       1996         1996      1997
                                                     ---------   ---------  ---------   ---------  ---------   ---------  ---------
                                                                                       (unaudited)                  (unaudited)     
Cash flows from operating activities:
<S>                                                  <C>         <C>        <C>         <C>        <C>         <C>        <C>
Net income (loss)                                    $ (12,817)  $     169  $ (53,843)  $  (3,811) $ (18,507)  $ (62,865) $ (16,523)

Adjustments to reconcile net income (loss) 
 to net cash from operations:
     Depreciation and amortization                      11,791      13,038     20,898       7,858      8,294      20,831     11,556
     Provision for doubtful accounts                        96          80         40           8         18          25         80
     Amortization of unearned compensation                  23          23         21          11          -          10        111
     Amortization of deferred gain                           -        (107)      (100)        (57)       (56)        (72)       (80)

     Foreign currency translation loss (gain)                -          48         40         (83)      (216)        (25)       (65)

(Increase) decrease in accounts receivable              (3,583)     (9,518)    (4,007)    (15,651)    10,324      23,110     (1,027)

(Increase) decrease in inventories                      (2,068)     (1,868)     9,647        (725)    (7,367)      4,371      3,208
(Increase) decrease in prepaid expenses
   and other assets                                     (2,504)      1,992      2,107         (76)     2,522       2,789     (2,613)

Increase (decrease) in accounts payable                  5,355      (4,570)     7,430         263    (11,216)     13,059        876
Increase (decrease) in accrued expenses                    987       1,808     16,156       3,973    (14,562)      1,995     (3,407)

Increase (decrease) in research and
   development advance                                   2,745      (1,649)      (190)       (190)         -           -          -
Increase (decrease) in deferred revenues                 1,642       4,809       (912)     (1,098)    (1,378)         12      1,744
Discontinued operations                                (14,519)     (1,400)    11,503       8,614     21,016      10,839      8,138
                                                     ---------   ---------  ---------   ---------  ---------   ---------  ---------
   Net cash provided by (used in)
     operating activities                              (12,852)      2,855      8,790        (964)   (11,128)     14,079      1,998
                                                     ---------   ---------  ---------   ---------  ---------   ---------  ---------

Cash flows from investing activities:
Purchases of short-term investments                    (71,470)   (111,679)  (707,280)    (65,148)  (241,994)    700,524   (278,192)

Sales and maturities of short-term investments          75,382     113,989    664,545      68,327    253,671    (740,539)   288,769
Purchases of property and equipment                    (12,753)    (14,510)   (16,759)    (11,027)   (11,139)    (15,074)   (10,716)

Sales of property and equipment                          2,049         701      1,775       1,054      1,307         865      2,139
Cash paid for acquired assets (Note 3)                       -           -    (10,684)          -          -     (10,557)         -
Increase in captalized software                         (4,999)     (6,702)    (9,371)     (2,958)      (681)     (2,351)    (1,487)

(Increase) decrease in other assets                        (54)        357       (103)     (6,662)        69         277     (1,589)

                                                     ---------   ---------  ---------   ---------  ---------   ---------  ---------
   Net cash provided by (used in)
     investing activities                              (11,845)    (17,844)   (77,877)    (16,414)     1,233     (66,855)    (1,076)

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

Cash flows from financing activities:
Sales of common stock, net                              35,274       5,264     65,434       6,255      1,014      59,312      9,074
Principal payments under capital lease obligations        (242)       (374)      (844)       (436)      (549)       (536)         -
(Payments) borrowings under line of credit
   agreements                                           (1,257)      1,110      2,993      (2,801)    (2,766)          -     (4,528)

Collateralized borrowings (payments)                         -           -      1,597       1,850     (1,589)          -        131
Purchase of treasury stock                                   -           -          -           -          -           -     (3,742)

                                                     ---------   ---------  ---------   ---------  ---------   ---------  ---------
   Net cash provided by (used in)
     financing activities                               33,775       6,000     69,180       4,868     (3,890)     58,776        935
                                                     ---------   ---------  ---------   ---------  ---------   ---------  ---------

Effect of translation exchange rates on cash               (68)        186        (49)        125        210        (217)      (122)

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

Net increase (decrease) in cash and equivalents          9,010      (8,803)        44     (12,385)   (13,575)      5,783      1,735

Cash and equivalents at beginning of period             15,297      24,307     15,504      15,504     15,548       3,119      1,973
                                                     ---------   ---------  ---------   ---------  ---------   ---------  ---------
Cash and equivalents at end of period                $  24,307   $  15,504  $  15,548   $   3,119  $   1,973   $   8,902  $   3,708
                                                     =========   =========  =========   =========  =========   =========  =========


Supplemental Cash Flow Information:
Income taxes paid                                    $      26   $      31  $      74   $      27  $       -   $      47  $       -
Interest paid                                              858         804      1,142         641        453         788        921
Stock issued for acquired assets (Note 3)                    -           -      3,724           -          -       3,724          -

</TABLE>

      The accompanying notes are an integral part of these supplemental 
                      consolidated financial statements.

                                      F-8
<PAGE>
 
VTEL CORPORATION                                                                
Notes to Supplemental Consolidated Financial Statements                         
(dollars in thousands, except per share amounts)                                
- ------------------------------------------------------------------------------- 

1. THE COMPANY

     VTEL Corporation ("VTEL" or the "Company") designs, manufactures, markets,
     services and supports integrated, multi-media videoconferencing systems
     which operate over private and switched digital communication networks.
     VTEL distributes its systems to a domestic and international marketplace
     through a reseller network and directly to end-user customers.

     On May 23, 1997, shareholders of VTEL and Compression Labs, Incorporated, a
     Delaware corporation ("CLI"), approved the merger (the "Merger") of VTEL-
     Sub, Inc., a Delaware corporation and direct wholly-owned subsidiary of
     VTEL ("Merger Sub"), with and into CLI, pursuant to an Agreement and Plan
     of Merger and Reorganization (the "Merger Agreement"), with CLI becoming a
     direct wholly-owned subsidiary of VTEL.  As a result of the Merger, (a) the
     outstanding shares of CLI's common stock were converted into the right to
     receive 0.46 shares of common stock of VTEL for each share of CLI common
     stock converted (or cash in lieu of fractional shares otherwise deliverable
     in respect thereof), and (b) the outstanding shares of CLI Series C
     Preferred Stock were converted into the right to receive 3.15 shares of
     VTEL common stock for each share of CLI preferred stock converted (or cash
     in lieu of fractional shares otherwise deliverable in respect thereof).
     The CLI shares were exchanged for a total of 8,424,741 shares of VTEL
     common stock.

     The acquisition was accounted for as a pooling of interests and
     accordingly, the accompanying supplemental consolidated financial
     statements have been restated for all periods to include the accounts of
     CLI.  Revenues, net income (loss) from continuing operations and net income
     (loss) of the separate companies for the periods preceding the acquisition
     were as follows:

<TABLE>
<CAPTION>

                                                          VTEL       CLI        Total   
                                                        -------    --------    -------- 
     Year ended December 31, 1993                                                       
     <S>                                                <C>        <C>         <C>      
        Revenues                                        $31,452    $ 95,095    $126,547 
        Net loss from continuing operations              (9,334)    (12,184)    (21,518)
        Net loss                                         (9,334)     (3,483)    (12,817)
     Year ended December 31, 1994                                                       
        Revenues                                         54,231     114,958     169,189 
        Net income (loss) from continuing operations         62      (4,878)     (4,816)
        Net income                                           62         107         169 
     Year ended December 31, 1995                                                       
        Revenues                                         78,095     112,979     191,074 
        Net income (loss) from continuing operations      3,739     (21,040)    (17,301)
        Net loss                                          3,739     (57,582)    (53,843)
     Seven months ended July 31, 1996                                                   
        Revenues                                         50,109      46,853      96,962 
        Net loss                                         (9,899)     (8,608)    (18,507)
     Nine months ended April 30, 1997 (unaudited)                                       
        Revenues                                         83,022      61,954     144,976 
        Net income (loss) from continuing operations      2,203     (11,863)     (9,660)
        Net loss                                          2,203     (18,553)    (16,350)
</TABLE> 

                                      F-9
<PAGE>
 
VTEL CORPORATION                                                                
Notes to Supplemental Consolidated Financial Statements                         
(dollars in thousands, except per share amounts)                                
- --------------------------------------------------------------------------------

2. SIGNIFICANT ACCOUNTING POLICIES 

     Basis of Presentation

     The supplemental consolidated financial statements have been prepared in
     accordance with generally accepted accounting principles and include the
     accounts of VTEL's wholly-owned subsidiaries.  All significant intercompany
     transactions and balances have been eliminated in consolidation.
     Preparation of the supplemental consolidated financial statements in
     conformity with generally accepted accounting principles requires
     management to make estimates and assumptions that affect the reported
     amounts of assets and liabilities and disclosure of contingent assets and
     liabilities at the date of the financial statements and the reported
     amounts of revenues and expenses during the reporting period.  The more
     significant estimates made by management include the provision for doubtful
     accounts receivable, inventory write-downs for potentially excess or
     obsolete inventory, the valuation allowance for the gross deferred tax
     asset, and the amortization period for intangible assets. Actual amounts
     could differ from the estimates made. Management periodically evaluates
     estimates used in the preparation of the financial statements for continued
     reasonableness. Appropriate adjustments, if any, to the estimates used are
     made prospectively based upon such periodic evaluation.

     These supplemental consolidated financial statements should be read in
     conjunction with the audited consolidated financial statements (including
     the notes thereto) contained in VTEL's 1996 Transition Report on Form 10-K
     for the seven months ended July 31, 1996 filed with the Securities and
     Exchange Commission on November 13, 1996 and CLI's Annual Report on Form
     10-K for the year ended December 31, 1996 filed with the Securities and
     Exchange Commission on April 15, 1997.

     In May 1996, VTEL changed its fiscal year end from December 31 to July 31.
     The accompanying supplemental consolidated financial statements include the
     results of operations and cash flows for the seven-month transition period
     ended July 31, 1996 with comparative presentation of the unaudited results
     for the seven months ended July 31, 1995.  Results of operations for the
     seven month periods ended July 31, 1996 and 1995 are not necessarily
     indicative of the operating results which would be expected for a full
     year.

     Interim Financial Data

     The interim financial data as of April 30, 1997, for the seven months ended
     July 31, 1995 and for the nine months ended April 30, 1996 and 1997 is
     unaudited; however, in the opinion of VTEL's management, the interim data
     includes all adjustments, consisting only of normal recurring adjustments,
     necessary for a fair presentation of the results of the interim periods
     presented.

     Revenue Recognition

     Product revenues, recorded net of discounts, are recognized at the time a
     product is shipped or services are performed and the Company has no
     significant further obligations to the customer. Customer prepayments are
     deferred until product shipment has occurred or services have been rendered
     and there are no significant further obligations 

                                      F-10
<PAGE>
 
VTEL CORPORATION                                                                
Notes to Supplemental Consolidated Financial Statements                         
(dollars in thousands, except per share amounts)                                
- --------------------------------------------------------------------------------

     to the customer. Service revenues are recognized at the time the services
     are rendered and the Company has no significant further obligations to the
     customer.

     Warranty Costs

     The Company generally warrants its products against defects for one year
     from the date of installation, but not to exceed fifteen months from date
     of shipment. The Company provides currently for the estimated costs which
     may be incurred in the future under the warranty program for products sold
     during the year.

     Software Development Costs

     Costs incurred in connection with the development of software products are
     accounted for in accordance with Statement of Financial Accounting
     Standards ("SFAS") No. 86, "Accounting for the Costs of Computer Software
     to Be Sold, Leased or Otherwise Marketed." Costs incurred prior to the
     establishment of technological feasibility are charged to research and
     development expense.  Amortization of capitalized software begins upon
     initial product shipment.  Software development costs are amortized (a)
     over the estimated life of the related product (generally thirty-six
     months), using the straight-line method or (b) based on the ratio of
     current revenues from the related products to total estimated revenues for
     such products, whichever is greater.

     Cash and Equivalents

     Cash and equivalents include cash and certificates of deposit with original
     maturities of three months or less at the date of acquisition.

     Short-term Investments

     Short-term investments are carried at market value, which approximates
     cost, at the balance sheet date.  Short-term investments consist of funds
     primarily invested in mortgage-backed securities guaranteed by the U.S.
     government, government securities and commercial paper.  Investment
     securities generally have maturities of less than one year.

     Included in short-term investments is approximately $885 of restricted
     investments which are pledged to collateralize letters of credit obtained
     to secure an advance made to the Company under a development and license
     agreement (see Note 9).

     The Company accounts for investment securities under SFAS No. 115,
     "Accounting for Certain Investments in Debt and Equity Securities."  SFAS
     No. 115 requires investment securities to be classified as held-to-
     maturity, trading or available-for-sale based on the characteristics of the
     securities and the activity in the investment portfolio.  At December 31,
     1994 and 1995 and July 31, 1996, all investment securities are classified
     as available-for-sale.  No unrealized gains or losses have been recorded as
     a separate component of 

                                      F-11
<PAGE>
 
VTEL CORPORATION                                                                
Notes to Supplemental Consolidated Financial Statements                         
(dollars in thousands, except per share amounts)                                
- --------------------------------------------------------------------------------

     equity for the current period or prior year as market values approximate
     cost due to the short-term nature of the investments.

     Inventories

     Inventories are stated at the lower of cost (determined under the first-in,
     first-out method) or market. Cost includes the acquisition of purchased
     components, parts and sub-assemblies, labor and overhead.

     Property and Equipment

     Property and equipment is recorded at cost. Internal support equipment
     consists of certain demonstration and development systems manufactured by
     the Company and is recorded at manufactured cost. Equipment acquired under
     capital lease obligations is recorded at the lower of fair market value or
     the present value of the future minimum lease payments at the inception of
     the lease. Depreciation and amortization are provided using the straight-
     line method over the estimated economic lives of the assets, ranging from
     two to ten years, or over the lease term of the respective assets, as
     applicable. Repair and maintenance costs are expensed as incurred.

     Intangible Assets

     During the year ended December 31, 1995, VTEL acquired certain assets and a
     service and support infrastructure related to an operating group of another
     company (see Note 3). The estimated value of the intangible assets is being
     amortized over a period of 15 years, which is the period in which the
     Company expects to be able to continue to effectively utilize the service
     and support infrastructure to support its resellers in the offering of
     broader services to users of videoconferencing equipment. In accordance
     with Accounting Principles Board Opinion ("APB") No. 17, "Intangible
     Assets," the Company periodically evaluates the amortization period
     associated with the acquired intangible assets based upon anticipated
     periods of future benefit, including factors such as loss of employees with
     key or unique knowledge, the Company's ability to continue to successfully
     utilize the specialized integration and process knowledge to provide
     integration and support services, and other relevant factors which could
     require revision of the estimate of the amortization period.  Appropriate
     adjustments, if any, to the amortization period will be made prospectively
     based upon such periodic evaluation.

     Research and Development Advance

     Research and development advance represents a cash advance received by VTEL
     under a development and license agreement (see Note 9) for the
     reimbursement of research and development costs incurred by VTEL in
     performing work specified in the agreement. The amounts used to reimburse
     costs incurred under the agreement are recognized as reductions of research
     and development expenses.

                                      F-12
<PAGE>
 
VTEL CORPORATION                                                                
Notes to Supplemental Consolidated Financial Statements                         
(dollars in thousands, except per share amounts)                                
- --------------------------------------------------------------------------------

     Foreign Currency Translation

     The financial statements of the Company's foreign subsidiaries are measured
     using the local currency as the functional currency.  Accordingly, assets
     and liabilities of the subsidiaries are translated at current rates of
     exchange at the balance sheet date.  The resultant gains or losses from
     translation are included in a separate component of stockholders' equity.
     Income and expense from the subsidiaries are translated using monthly
     average exchange rates.

     Income Taxes

     The Company accounts for income taxes under SFAS No. 109, "Accounting for
     Income Taxes," which requires the liability method of accounting for income
     taxes.  Under the liability method, deferred taxes are determined based on
     the difference between the financial statement and tax bases of assets and
     liabilities using enacted tax rates in effect in the years in which the
     differences are expected to reverse.

     Net Income (Loss) Per Share

     Net income (loss) per share is computed by dividing net income (loss) by
     the weighted average number of common shares and common share equivalents
     outstanding (if dilutive) during each period. Common share equivalents
     represent incremental shares of common stock calculated using the treasury
     stock method related to common stock which may be issuable at the average
     market price of the Company's common stock during the period upon exercise
     of outstanding stock options or warrants.

     In February 1997, the Financial Accounting Standards Board issued SFAS No.
     128, "Earnings Per Share."  The new standard, which is effective for
     financial statements issued for periods ending after December 15, 1997,
     establishes standards for computing and presenting earnings per share
     ("EPS") and upon adoption requires restatement of all prior period EPS data
     presented.  The Company will implement this standard in fiscal 1998.  The
     implementation of the standard will result in the presentation of a basic
     EPS calculation in the financial statements as well as a diluted EPS
     calculation.  Under SFAS No. 128, basic and diluted earnings per share will
     not differ materially from the amounts currently reported.

     Concentration of Credit Risk

     The Company sells its products to various companies across several
     industries, including third-party resellers.  The Company performs ongoing
     credit evaluations of its customers and maintains reserves for potential
     credit losses.  The Company requires advanced payments or secures
     transactions when deemed necessary.

     Fair Value of Financial Instruments

     The carrying amount of the Company's financial instruments, including cash
     and equivalents, short-term investments and short-term trade receivables
     and payables, 

                                      F-13
<PAGE>
 
VTEL CORPORATION                                                                
Notes to Supplemental Consolidated Financial Statements                         
(dollars in thousands, except per share amounts)                                
- --------------------------------------------------------------------------------

     approximates fair value. The carrying amount of short-term investments
     approximates fair value because of the short maturity and nature of these
     instruments. The Company places its cash investments in quality financial
     instruments and limits the amount invested in any one institution or in any
     type of instrument. The Company has not experienced any significant losses
     on its investments.

     Long-lived Assets

     Effective January 1, 1996, the Company adopted SFAS No. 121, "Accounting
     for the Impairment of Long-Lived Assets and for Long-Lived Assets to be
     Disposed Of."  SFAS No. 121 establishes accounting standards for the
     impairment of long-lived assets, certain identifiable intangibles, and
     goodwill related to those assets to be held and used for long-lived assets
     and certain identifiable intangibles to be disposed of.  It requires that
     long-lived assets and certain identifiable intangibles to be held and used
     by an entity be reviewed for impairment whenever events or changes in
     circumstances indicate that the carrying amount of an asset may not be
     recoverable.  The Company evaluated its long-lived assets and intangibles
     based on guidance provided by SFAS No. 121.  The adoption of SFAS No. 121
     did not have any effect on the Company's financial position or results of
     operations.

     Employee Stock Plans

     Effective January 1, 1996, the Company adopted SFAS No. 123, "Accounting
     and Disclosure of  Stock-Based Compensation."  SFAS No. 123  introduces a
     fair-value based method of accounting for stock-based compensation.  It
     encourages, but does not require, companies to recognize compensation
     expense for grants of stock, stock options, and other equity instruments to
     employees based on their estimated fair market value on the date of grant.
     The Company has opted to continue to apply the existing accounting rules
     contained in APB No. 25, "Accounting for Stock Issued to Employees." As
     such, SFAS No. 123 did not have any effect on the Company's financial
     position or results of operations.

3.   PURCHASE TRANSACTION

     In November 1995, VTEL purchased certain assets and a service and support
     infrastructure related to the Integrated Communications Systems Group of
     another company (the "ICS Transaction").    The transaction resulted in
     VTEL acquiring certain tangible assets primarily consisting of inventories,
     prepaid expenses and fixed assets and assuming certain deferred revenues
     related to extended warranty service contracts.  The acquired service and
     support infrastructure includes a trained workforce possessing specialized
     systems integration and process knowledge.  The transaction will allow VTEL
     to enhance its ability to support VTEL's resellers' abilities to offer
     systems integration, installation and end-user support to the ultimate
     purchaser of VTEL's products, thereby allowing the resellers to more
     effectively provide an essential part of the services that are integral to
     the purchase of the Company's products.

                                      F-14
<PAGE>
 
VTEL CORPORATION                                                                
Notes to Supplemental Consolidated Financial Statements                         
(dollars in thousands, except per share amounts)                              
- --------------------------------------------------------------------------------

     VTEL completed the ICS Transaction with the payment of $10,684 in cash,
     which includes $142 of transaction expenses, and the issuance of 260,000
     shares of VTEL's unregistered common stock with an estimated market value
     at the time of the transaction of $3,723. The transaction was accounted for
     under the purchase method pursuant to which VTEL determined that
     approximately $14,400 of the purchase price related to intangible assets
     which are primarily represented by the service and support infrastructure.

4.   INVENTORIES

     Inventories consist of the following:

<TABLE>
<CAPTION>

                                             December 31,                            
                                          -----------------   July 31,  April 30,    
                                           1994      1995       1996     1997        
                                          -------   -------   -------   --------     
                                                                       (unaudited)
                                                                                     
     <S>                                  <C>       <C>       <C>       <C>          
     Raw materials                        $ 9,861   $ 8,263   $13,808   $13,349      
     Work in process                        4,841     4,019     2,781     2,213      
     Finished goods                        14,771    16,383    10,678     8,351      
     Finished goods held for evaluation                                              
         and under rental and loan                                                   
         agreements                         5,692     3,887     2,041     2,028      
                                          -------   -------   -------   -------      
                                          $35,165   $32,552   $29,308   $25,941      
                                          =======   =======   =======   =======      
</TABLE> 

     Finished goods held for evaluation and under rental and loan agreements
     consists of completed multi-media communication systems used for
     demonstration and evaluation purposes, which are generally sold during the
     next year.

5.   PROPERTY AND EQUIPMENT

     Property and equipment is composed of the following:

<TABLE>
<CAPTION>
                                              December 31,        July 31,
                                          --------------------    --------
                                            1994        1995        1996  
                                          --------    --------    --------
                                                                          
     <S>                                  <C>         <C>         <C>     
     Furniture, machinery and equipment   $ 40,260    $ 40,987    $ 39,496
     Internal support equipment              5,738       9,172      12,880
     Equipment under capital lease           2,185       2,090           -
     Leasehold improvements                    797       1,629       2,369
                                          --------    --------    --------
                                            48,980      53,878      54,745
     Less - accumulated depreciation       (23,186)    (26,956)    (28,953)
                                          --------    --------    --------
                                          $ 25,794    $ 26,922    $ 25,792
                                          ========    ========    ======== 
</TABLE>


     Depreciation and amortization expense relating to property and equipment
     was approximately $11,791, $13,038, $20,818 and $8,379 for the years ended
     December 31, 1993, 1994, 1995 and the seven months ended July 31, 1996,
     respectively.

                                      F-15
<PAGE>
 
VTEL CORPORATION                                                                
Notes to Supplemental Consolidated Financial Statements      
(dollars in thousands, except per share amounts)                               
- --------------------------------------------------------------------------------

6.   DISCONTINUED OPERATIONS AND RESTRUCTURING 

     During November 1995, CLI adopted a strategic plan to discontinue
     operations of its broadcast products division. This division generally
     manufactured and sold broadcast video products to commercial end-users. The
     results for the division have been accounted for as discontinued operations
     in accordance with APB No. 30, "Reporting the Results of Operations -
     Reporting the Effects of Disposal of a Segment of a Business, and
     Extraordinary, Unusual and Infrequently Occurring Events and Transactions,"
     and the accompanying supplemental consolidated financial statements have
     been presented to reflect the discontinuation of the division.

     On June 27, 1996, CLI completed the sale of certain assets of its broadcast
     products division to another company in exchange for $12,500 in cash
     (subject to post-closing adjustments) and the assumption of $2,000 in
     liabilities. The purchaser assumed past warranty obligations associated
     with the product family covered by the sale.  With the exception of the
     accounts receivable, CLI disposed of the remaining assets of the division
     to a separate buyer.  The components of net assets of discontinued
     operations included in the accompanying supplemental consolidated balance
     sheet are summarized as follows:

<TABLE>
<CAPTION>
                                       December 31,                         
                                    -----------------   July 31,  April 30, 
                                     1994      1995      1996      1997     
                                    -------   -------   -------   --------  
                                                                (unaudited)
                                                                            
     <S>                            <C>       <C>       <C>       <C>       
     Accounts receivable, net       $19,920   $14,929   $ 8,698   $   892   
     Inventories                      6,243    10,859         -         -   
     Property and equipment,  net     3,288     4,174         -         -   
     Capitalized software             3,916         -         -         -   
     Other assets                         -        38         -         -   
                                    -------   -------   -------   -------   
                                    $33,367   $30,000   $ 8,698   $   892   
                                    =======   =======   =======   =======    
</TABLE>

     Revenues from the discontinued division were approximately $46,232, $42,029
     and $36,974 for the years ended December 31, 1993, 1994 and 1995,
     respectively.  Revenues from the discontinued division were $11,201 and nil
     for the seven months ended July 31, 1996 and nine months ended April 30,
     1997, respectively.

7.   SHORT-TERM AND LONG-TERM DEBT

     On November 28, 1994, VTEL executed a credit agreement with a financial
     institution which established a $10,000 revolving line of credit.  Under
     the line of credit, VTEL may borrow up to $10,000 based on eligible
     accounts receivable.  The line of credit provides a minimum borrowing base
     of $5,000.  The credit agreement also provides that the Company may request
     the issuance of letters of credit up to a maximum of $4,000 and foreign
     exchange contracts subject to certain limitations.

                                      F-16
<PAGE>
 
VTEL CORPORATION                                                                
Notes to Supplemental Consolidated Financial Statements      
(dollars in thousands, except per share amounts)                               
- -------------------------------------------------------------------------------

     Any amounts outstanding under the credit agreement will bear interest at
     the prime rate and will be payable on the maturity date of December 13,
     1998 unless VTEL converts the revolving advances to a three-year term loan,
     which will bear interest at the prime rate and will be payable in equal
     monthly installments.

     Any amounts outstanding under the credit agreement will be secured by
     VTEL's inventory and accounts receivable.  The credit agreement requires
     VTEL to maintain certain financial ratios and other covenants. At April 30,
     1997, VTEL had no amounts outstanding under the credit line.

     At July 31, 1996, the Company, through its wholly-owned subsidiary, CLI,
     also had a $15,000 revolving line of credit with a bank with an interest
     rate equal to the highest London Interbank Offered Rate ("LIBOR") plus 4.8%
     (10.9% at July 31,1996). This line of credit expired on June 30, 1997 and
     was repaid in full in July 1997.

8.   STOCKHOLDERS' EQUITY

     General

     In October 1995, VTEL completed a secondary offering of its common stock
     which consisted of the sale of 3,000,000 shares of VTEL's common stock
     generating net proceeds to VTEL of approximately $57,000.

     In June 1995, Intel purchased 51,898 shares of VTEL's common stock for
     approximately $396 pursuant to an agreement, since terminated, which
     enabled Intel to maintain its percentage ownership interest in VTEL.  In
     October 1995, Intel delivered notice of its intent to exercise its warrant
     to purchase 1,199,124 shares of VTEL's common stock at an exercise price of
     $11.50 per share under an agreement which modified the provisions of the
     common stock and Warrant Purchase Agreement (the "Stock Agreement") between
     VTEL and Intel.   Pursuant to the modified agreement, Intel agreed to sell
     to VTEL concurrently with the exercise of the warrant, and VTEL agreed to
     purchase from Intel, 771,464 shares of VTEL's common stock at a price of
     $17.875, the closing price of VTEL's Common Stock on the day immediately
     preceding the date in which Intel delivered notice of its intent to
     exercise the warrant.  During the seven months ended July 31, 1996, VTEL
     completed the warrant exercise and related stock redemption transaction
     such that Intel increased its ownership of VTEL's common stock by 427,660
     shares.  The modified agreement also resulted in Intel agreeing to
     terminate certain of its rights specified in the Investor Rights' Agreement
     between the Company and Intel.  The Stock Agreement provides that under
     certain circumstances VTEL may be required to register the shares sold
     under the agreements at its sole cost.

     In November 1995, VTEL issued 260,769 shares of its unregistered common
     stock in connection with the ICS Transaction (see Note 3).

                                      F-17
<PAGE>
 
VTEL CORPORATION                                                                
Notes to Supplemental Consolidated Financial Statements      
(dollars in thousands, except per share amounts)                               
- -------------------------------------------------------------------------------

     Share Repurchase Program

     During the seven months ended July 31, 1996, VTEL adopted a share
     repurchase program pursuant to which VTEL repurchased shares of its common
     stock in the open market.  The repurchased shares will be issued from time
     to time to fulfill requirements for VTEL's common stock under its employee
     stock plans.  Subsequent to July 31, 1996, VTEL repurchased 455,200 shares
     of its common stock for approximately $3,700.  In February 1997, VTEL
     terminated the stock repurchase program.  VTEL applied the cost method of
     accounting for its treasury stock.

     CLI Redeemable Convertible Preferred Stock

     On October 25, 1996, CLI completed a private placement of 350,000 shares of
     Class C Preferred Stock and stock warrants for the purchase of 375,000
     shares of CLI common stock for approximately $7,000, before certain
     issuance costs, pursuant to a purchase agreement with an institutional
     investor.  The preferred stock was exchanged for 1,102,500 shares of VTEL
     common stock and both the number and exercise price of the warrants were
     converted into warrants for the purchase of VTEL common stock based on the
     exchange ratio of 0.46 in connection with the Merger. The converted
     warrants totaling 172,500 VTEL shares, have an exercise price of $12.39 and
     expire in October 2001.

     Stock and Stock Option Plans

     VTEL has three stock option plans, the 1989 Stock Option Plan (the "1989
     Plan"), the 1996 Stock Option Plan (the "1996 Plan") and the 1992 Director
     Stock Option Plan (the "1992 Plan").  The 1989 Plan and the 1996 Plan both
     provide for the issuance of non-qualified and incentive stock options to
     key employees, directors and consultants of the Company.  Stock options are
     generally granted at the estimated fair market value at the time of grant,
     and the options vest ratably over 48 months and are generally exercisable
     for a period of ten years beginning with date of grant.  The 1992 Plan
     provides for the issuance of stock options to nonemployee directors at the
     estimated fair market value to the time of grant.  Such options vest
     ratably over 36 months and are exercisable for a period of ten years
     beginning with the date of the grant.

     CLI had employee and director stock option plans prior to the merger with
     VTEL.  On May 23, 1997, all options outstanding under these plans converted
     into options for common stock of VTEL.  Both the number of shares subject
     to option and the per share exercise price under each option were adjusted
     by the exchange ratio of 0.46.

                                      F-18
<PAGE>
 
VTEL CORPORATION                                                                
Notes to Supplemental Consolidated Financial Statements                        
(dollars in thousands, except per share amounts)                               
- ------------------------------------------------------------------------------- 

     The Company applies APB No. 25 and related Interpretations in accounting
     for its stock option plans, which are described below.  Accordingly, no
     compensation cost has been recognized for its stock option plans.  Had
     compensation cost for the Company's stock option plans been determined
     based on the fair market value at the grant dates for awards under those
     plans consistent with the method provided by SFAS No. 123, the Company's
     net income (loss) and net income (loss) per share would have been reflected
     by the following pro forma amounts for the year ended December 31, 1995 and
     the seven months ended July 31, 1996:

<TABLE>
<CAPTION>
                                               For the Year  For the Seven
                                                   Ended      Months Ended
                                                December 31,     July 31, 
                                                   1995           1996    
                                                ------------  ------------
     <S>                                        <C>           <C>         
     Net loss                As reported         $ (53,843)    $ (18,507) 
                             Pro forma             (55,748)      (20,638) 
                                                                          
     Net loss per share      As reported         $   (2.81)    $   (0.87) 
                             Pro forma               (2.91)        (0.96)  
</TABLE>


     The fair value of each option grant is estimated on the date of grant using
     the Black-Scholes option-pricing model with the following weighted-average
     assumptions used for grants during the year ended December 31, 1995 and the
     seven months ended July 31, 1996:

<TABLE>
<CAPTION>
                                    For the Year        For the Seven
                                        Ended           Months Ended 
                                    December 31,          July 31,   
                                        1995                1996     
                                    ------------        -------------
     <S>                            <C>                  <C>         
     Dividend yield                 $        -           $        -  
     Expected volatility                 84.21%               84.83% 
     Risk-free rate of return             5.43%                6.56% 
     Expected life                   4.94 years           4.94 years  
</TABLE>

                                      F-19
<PAGE>
 
VTEL CORPORATION                                                                
Notes to Supplemental Consolidated Financial Statements                        
(dollars in thousands, except per share amounts)                      
- --------------------------------------------------------------------------------

     The following table summarizes activity under all Plans for each of the 
     three years ended December 31, 1995 and the seven months ended July 31, 
     1996.  This information includes stock options relating to CLI's stock
     option plans; both the number of shares and the per share exercise price
     have been adjusted by the exchange ratio of 0.46.

<TABLE>
<CAPTION>
                                              1993               1994                 1995               1996     
                                       -----------------   ------------------  -----------------   ----------------
                                                Weighted            Weighted            Weighted           Weighted
                                                Average             Average             Average            Average
                                       Shares   Exercise   Shares   Exercise   Shares   Exercise  Shares   Exercise
                                       (000's)   Price     (000's)   Price     (000's)   Price    (000's)   Price 
                                       -------  --------   -------  ---------  -------  --------  -------  --------
     <S>                               <C>      <C>        <C>      <C>        <C>      <C>       <C>      <C>    
     Outstanding at the                                                                                           
        beginning of the period          2,885   $ 14.89     3,065   $  14.12    3,323   $ 12.87    3,627  $ 14.31
          Granted                        1,227      9.47     1,009      14.91    1,213     20.36    1,218    11.44
          Exercised                       (294)    11.75      (226)      6.58     (434)     6.70     (212)    6.31
          Canceled                        (753)    10.44      (525)     26.70     (475)    21.54     (629)   20.41
                                        ------             -------             -------            -------         
     Outstanding at the                                                                                           
        end of the period                3,065     14.12     3,323      12.87    3,627     14.31    4,004    12.89
                                        ======             =======             =======            =======         
                                                                                                                  
     Options exercisable at                                                                                       
        period end                       2,226   $ 12.55     2,583   $ 12.82     2,932   $ 14.70    3,083  $ 14.56
                                        ======   =======   =======   =======   =======   =======  =======  =======
                                                                                                                  
     Weighted average fair                                                                                        
        value of options granted                                                                                  
        during the period                        $     -             $     -             $ 10.57           $  6.45
                                                 =======             =======             =======           ======= 
</TABLE>

<TABLE>
<CAPTION>
                                      Options Outstanding               Options Exercisable      
                          -------------------------------------------  -------------------------- 
                                             Weighted-
                             Number           average       Weighted-      Number of    Weighted-
                          outstanding at     remaining       average    exercisable at   average 
      Range of exercise   July 31, 1996   contractual life  exercise    July 31, 1996   exercise 
          prices             (000's)          (year's)        price         (000's)       price  
     ------------------   --------------  ----------------  ---------  ---------------  ---------
     <S>                  <C>             <C>               <C>        <C>              <C>      
       $ 0.30-$ 4.00                560        4.87         $   2.01               560  $   2.01   
         4.38- 11.00              1,224        8.24             8.25               945      7.54   
        11.11- 24.48              1,970        8.03            18.83             1,360     17.92
        26.00- 43.48                250        6.50            33.28               216     33.74
                          -------------                                --------------- 
        $0.30-$43.48              4,004        7.57            12.89             3,083     12.74   
                          =============                                ===============  
</TABLE>

     During September through December of 1991, the Company granted options to
     purchase 65,400 shares at prices which are deemed to be less than fair
     market value at the date of grant. Vesting was ratable over a period of
     four years through 1995. Unearned compensation of $94 related to these
     options has been recognized ratably over the vesting period. Compensation
     expense charged to operations related to these options was $23, $23 and
     $21, respectively,  for years ended December 31, 1993, 1994 and 1995.

     During the year ended December 31, 1993, the Company adopted a program
     pursuant to which all holders of options under the Company's 1989 Stock
     Option Plan were given the opportunity to surrender their existing options
     for new options having an exercise price of $4.00 per share, the fair
     market value of the Company's Common Stock on the grant date of the new
     options.  Any vesting under the existing options was lost in an exchange
     under 

                                      F-20
<PAGE>
 
VTEL CORPORATION                                                                
Notes to Supplemental Consolidated Financial Statements                        
(dollars in thousands, except per share amounts)                      
- --------------------------------------------------------------------------------

     the program. The new options vest ratably over a 48 month period. A total
     of 558,913 options were exchanged under the program.

     Employee Stock Purchase Plan

     On April 29, 1993, VTEL adopted an Employee Stock Purchase Plan ("Employee
     Plan") which enables all employees to acquire VTEL's stock under the plan.
     The Employee Plan authorizes the issuance of up to 450,000 shares of VTEL's
     Common Stock.  The Employee Plan allows participants to purchase shares of
     the Company's Common Stock at a price equal to the lesser of (a) 85% of the
     fair market value of the Common Stock on the date of the grant of the
     option or (b) 85% of the fair market value of the Common Stock at the time
     of exercise.  Shares of Common Stock issued under the Employee Plan totaled
     41,988, 88,740, 66,087 and 37,121, respectively, for the years ended
     December 31, 1993, 1994 and 1995 and for the seven months ended July 31,
     1996.

     The fair value of the employees' purchase rights was estimated using the
     Black-Scholes model with the following assumptions for the year ended
     December 31, 1995 and the seven months ended July 31, 1996:

<TABLE>
<CAPTION>
                                              For the                            For the Seven               
                                            Year Ended                            Months Ended               
                                          December 31, 1995                       July 31, 1996              
                                     -----------------------------       -------------------------------     
                                     Section 16                           Section 16                         
                                      Officers            Others           Officers            Others        
                                     ----------        -----------       ------------       ------------     
     <S>                             <C>               <C>               <C>                <C>              
     Dividend yield                          -                  -                  -                  -      
     Expected volatility                 95.78%             90.29%             79.87%             79.68%     
     Risk-free rate of return             5.18%              5.12%              5.58%              5.43%     
     Expected life                         .50 years          .25 years          .50 years          .25 years
                                                                                                             
     Weighted-average fair value                                                                             
        of purchase rights granted   $    3.13         $     2.30        $      2.30        $      2.07       
</TABLE>

9.   DEVELOPMENT AND LICENSE AGREEMENT

     On October 22, 1993, VTEL entered into a Development and License Agreement
     (the "Development Agreement") with Intel Corporation ("Intel"), pursuant to
     which the companies agreed to engage in a series of development efforts
     with respect to video compression software as well as other video
     technology such as processes and designs.  The agreement contains certain
     provisions for licensing agreements and royalties between the two companies
     for the use of the technology developed under the agreement.

     The initial term of the Development Agreement will continue until December
     31, 1996 and will automatically renew thereafter for successive terms of
     one year unless written notice is given by either party six months prior to
     the expiration of the initial term or any successor term.

                                      F-21
<PAGE>
 
VTEL CORPORATION                                                                
Notes to Supplemental Consolidated Financial Statements                        
(dollars in thousands, except per share amounts)                      
- --------------------------------------------------------------------------------

     VTEL was advanced $3,000 under the agreement to be used for the initial
     reimbursements of research and development costs incurred by VTEL in
     performing the work specified in the Development Agreement.  The Company is
     required to periodically report the amount of costs incurred which have
     been reimbursed from the advance.  VTEL records reductions of the advance
     as the specified work is performed and reimbursable costs are incurred.
     However, reimbursements are actually approved for release to VTEL as
     specified projects or milestones are completed.  In May 1997, VTEL issued
     155,040 shares of Common Stock to Intel in lieu of repayment of the
     remaining $901 advance.

     During the years ended December 31, 1993,  1994 and 1995, the Company
     reduced gross research and development expenses by approximately $255,
     $1,649 and $190, respectively, for reimbursable research and development
     costs under the terms of the Development Agreement.  No reductions of
     research and development expenses were recorded during the seven months
     ended July 31, 1996 as a result of the Development Agreement.  As of  July
     31, 1996, the Company had no research and development activities in process
     or planned related to the Development Agreement.

10.  FEDERAL INCOME TAXES

     Under the provisions of SFAS No. 109, the components of the net deferred
     tax amount are as follows:

     <TABLE>
     <CAPTION>
                                                          December 31,
                                                     --------------------    July 31,
                                                       1994        1995        1996
                                                     --------    --------    --------
     Deferred tax assets:
     <S>                                             <C>         <C>         <C>
     Net operating loss carryforwards                $ 20,360    $ 21,780    $ 33,062
     Research and development credit carryforwards      3,658       3,127       3,127
     Minimum tax credit carryforwards                      28          97         110
     Inventory and warranty provisions                  2,675       5,295       2,983
     Compensation accruals                                176         249         346
     Depreciation                                       4,634       7,818       5,012
     Accrued expenses                                   1,227       9,423       4,655
     Capitalized R & D expenses                         2,380       3,394       1,414
     Accounts receivable                                  863       4,466       3,753
     Other                                                878         622       1,651
                                                     --------    --------    --------
        Gross deferred tax asset                       36,879      56,271      56,113

     Deferred tax liabilities:
     Capitalized software                              (4,121)     (1,279)     (1,256)
     Long-term contract revenue                        (1,218)     (1,906)       (800)
                                                     --------    --------    --------
        Gross deferred tax liability                   (5,339)     (3,185)     (2,056)
                                                     --------    --------    --------
     Valuation allowance                              (31,540)    (53,086)    (54,057)
                                                     --------    --------    --------
     Net deferred tax asset                          $      -    $      -    $      -
                                                     ========    ========    ========
     </TABLE>

     The Company's net operating loss and research and development credit
     carryforwards expire in varying amounts from 1999 through 2011.  Research
     and development tax credit carryforwards expire in varying amounts from
     2002 through 2008.  Minimum tax credit carryforwards do not expire and
     carryforward indefinitely.  Net operating losses related to 

                                      F-22
<PAGE>
 
VTEL CORPORATION                                                                
Notes to Supplemental Consolidated Financial Statements                        
(dollars in thousands, except per share amounts)                      
- --------------------------------------------------------------------------------

     the Company's foreign subsidiary (totaling $5,273) are available to offset
     future foreign taxable income.

     The Company has experienced substantial changes in ownership as defined by
     the Internal Revenue Code.  These changes result in annual limitations of
     the amount of net operating loss carryforward generated prior to each
     change which can be utilized to offset future taxable income.  At July 31,
     1996, VTEL and CLI had total domestic net operating loss carryforwards of
     $21,038 and $76,162, respectively.  The portions of these carryforwards
     available for utilization during fiscal 1997 (in consideration of the
     annual limitations) are $17,670 and $450, respectively.  In each fiscal
     year subsequent to 1997, an additional $421 and $2,702, respectively, will
     become available for utilization through 2004.

     Due to the uncertainty surrounding the timing of realizing the benefits of
     its favorable tax attributes in future tax returns, the Company has placed
     a valuation allowance against its otherwise recognizable net deferred tax
     asset. Accordingly, no deferred taxes have been recorded for the years
     ended December 31, 1993, 1994 and 1995 and for the seven months ended July
     31, 1996.

     The tax provisions reflected in the accompanying supplemental consolidated
     financial statements is due primarily to federal alternative minimum taxes
     and state income taxes.

11.  RESTRUCTURING EXPENSES

     During the seven months ended July 31, 1996, VTEL finalized its plan to
     realign its resources into Customer Business Units ("CBU").  The
     realignment of resources resulted in VTEL recording a charge during the
     seven months ended July 31, 1996 of  approximately $553 related to
     restructuring costs that VTEL expected to incur in adjusting its business
     operations and resources such that VTEL would be able to effectively
     implement its CBU model. These restructuring charges primarily represent
     the costs associated with the elimination of positions which do not support
     the CBU strategy.

12.  COMMITMENTS AND CONTINGENCIES

     Lease Commitments

     VTEL leases furniture and equipment, manufacturing facilities and office
     space under noncancelable leases which expire at various dates through
     2005. Certain leases obligate VTEL to pay property taxes, maintenance and
     repair costs.

     During the year ended December 31, 1993, VTEL entered into a sale and
     leaseback agreement in which VTEL sold furniture and equipment with an
     aggregate net book value of $1,778 for $2,049 and leased such assets back
     under a 37 month operating lease.  VTEL has deferred the excess of the cash
     received over the aggregate net book value of the assets sold and leased
     back and recognizes such amount over the term of the lease.  VTEL is
     required to make monthly lease payments of $57 over the lease term.

                                      F-23
<PAGE>
 
VTEL CORPORATION                                                                
Notes to Supplemental Consolidated Financial Statements                        
(dollars in thousands, except per share amounts)                      
- --------------------------------------------------------------------------------

     Future minimum lease payments under all operating leases as of July 31,
     1996 were as follows:
     <TABLE>
     <CAPTION>
 
               Fiscal years ending:
               <S>                     <C>
                    1997                $ 5,200
                    1998                  4,116
                    1999                  2,816
                    2000                  2,581
                    2001                  2,458
               Thereafter                 3,693
                                        -------
                                        $20,864
                                        =======
               </TABLE>
               
     Total rent expense under all operating leases for the years ended December
     31, 1993, 1994 and 1995 and for the seven months ended July 31, 1996 was
     $4,213, $5,452, $6,188 and $4,713, respectively.

     Contingencies

     VTEL expects to incur a charge in the quarter ending July 31, 1997,
     currently estimated to be in range of $25 to $30 million, to reflect the
     combination of the two companies, including the elimination of duplicate
     facilities, severance costs relating to employee terminations, the write-
     off of certain intangibles, property and equipment, receivables and
     inventories, discharge and accruals of contingent liabilities and payment
     of transaction costs.

                                      F-24
<PAGE>
 
VTEL CORPORATION                                                                
Notes to Supplemental Consolidated Financial Statements                        
(dollars in thousands, except per share amounts)                      
- --------------------------------------------------------------------------------

13.  GEOGRAPHIC INFORMATION

     The Company operates in one industry.  Transfers between geographic areas
     recorded at cost plus a markup.  Information about the Company's operations
     in different geographic areas is as follows (in thousands):

     <TABLE>
     <CAPTION>
                                                               December 31, 1993                                    
                                              United States      Europe   Eliminations  Consolidated           
                                              -------------     --------  ------------  ------------           
                                                                                                               
     <S>                                      <C>               <C>       <C>           <C>                    
     Sales to unaffiliated customers          $     123,142     $  3,405  $         -   $    126,547           
     Transfer between geographic areas                2,443            -       (2,443)             -           
                                              -------------     --------  -----------   ------------           
     Total sales                              $     125,585     $  3,405  $    (2,443)       126,547           
                                              =============     ========  ===========   ============           
     Net loss from continuing operations      $     (20,177)    $ (1,304) $       (37)       (21,518)          
                                              =============     ========  ===========   ============           
     Net loss                                 $     (11,476)    $ (1,304)         (37)       (12,817)          
                                              =============     ========  ===========   ============           
     Identifiable assets                      $     167,945     $  2,524  $         -   $    170,469           
                                              =============     ========  ===========   ============           
                                                                                                          
                                                                                                          
                                                               December 31, 1994                                    
                                              United States      Europe   Eliminations  Consolidated           
                                              -------------     --------  ------------  ------------           
                                                                                                               
     Sales to unaffiliated customers          $     165,459     $  3,730  $         -   $    169,189           
     Transfer between geographic areas                3,683            -       (3,683)             -           
                                              -------------     --------  -----------   ------------           
     Total sales                              $     169,142     $  3,730  $    (3,683)  $    169,189           
                                              =============     ========  ===========   ============           
     Net loss from continuing operations      $      (2,767)    $ (1,537) $      (472)  $     (4,776)          
                                              =============     ========  ===========   ============           
     Net income (loss)                        $       2,178     $ (1,537) $      (472)           169           
                                              =============     ========  ===========   ============           
     Identifiable assets                      $     174,929     $  3,157  $         -   $    178,086           
                                              =============     ========  ===========   ============           
                                                                                                               
                                                                                                               
                                                               December 31, 1995                                    
                                              United States      Europe  Eliminations   Consolidated           
                                              -------------     -------- ------------   ------------           
                                                                                                               
     Sales to unaffiliated customers          $     184,471     $  6,603  $         -   $    191,074           
     Transfer between geographic areas                3,475            -       (3,475)             -           
                                              -------------     --------  -----------   ------------           
     Total sales                              $     187,946     $  6,603  $    (3,475)  $    191,074           
                                              =============     ========  ============  ============           
     Net loss from continuing operations      $     (16,912)    $   (520) $       131   $    (17,301)          
                                              =============     ========  ===========   ============           
     Net loss                                 $     (53,454)    $   (520) $       131   $    (53,843)           
                                              =============     ========  ===========   ============
     Identifiable assets                      $     219,616     $  3,445  $         -   $    223,061            
                                              =============     ========  ===========   ============            
      </TABLE>
     

                                      F-25
<PAGE>
 
VTEL CORPORATION                                                                
Notes to Supplemental Consolidated Financial Statements                        
(dollars in thousands, except per share amounts)                      
- --------------------------------------------------------------------------------
     <TABLE>
     <CAPTION>
                                                                    July 31, 1996
                                              United States     Europe     Eliminations   Consolidated
                                              -------------   -----------  ------------   ------------
     
     <S>                                      <C>             <C>          <C>            <C>         
     Sales to unaffiliated customers          $      93,728   $     3,234  $          -   $     96,962
     Transfer between geographic areas                2,383             -        (2,383)             -
                                              -------------   -----------  ------------   ------------
     Total sales                              $      96,111   $     3,234  $     (2,383)        96,962
                                              =============   ===========  ============   ============
     Net loss                                 $     (16,721)  $    (1,834) $         48        (18,507)
                                              =============   ===========  ============   ============
     Identifiable assets                      $     179,799   $     3,131  $     (7,838)  $    175,092
                                              =============   ===========  ============   ============

     </TABLE>
     

                                      F-26
<PAGE>
 
================================================================================
NO DEALER, SALESPERSON OR ANY OTHER PERSON HAS BEEN AUTHORIZED TO GIVE ANY
INFORMATION OR TO MAKE ANY REPRESENTATION IN CONNECTION WITH THE OFFERING OTHER
THAN THOSE CONTAINED IN THIS PROSPECTUS, AND, IF GIVEN OR MADE, SUCH INFORMATION
OR REPRESENTATION MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY THE
COMPANY OR ANY SELLING STOCKHOLDER. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER
TO SELL OR SOLICITATION OF ANY OFFER TO BUY BY ANYONE IN ANY JURISDICTION IN
WHICH SUCH OFFER OR SOLICITATION IS NOT AUTHORIZED, OR IN WHICH THE PERSON
MAKING SUCH OFFER OR SOLICITATION IS NOT QUALIFIED TO DO SO OR TO ANY PERSON TO
WHOM IT IS UNLAWFUL TO MAKE SUCH OFFER OR SOLICITATION. NEITHER THE DELIVERY OF
THIS PROSPECTUS NOR ANY SALE HEREUNDER SHALL, UNDER ANY CIRCUMSTANCES, CREATE
ANY IMPLICATION THAT THERE HAS BEEN NO CHANGE IN THE AFFAIRS OF THE COMPANY
SINCE THE DATE HEREOF OR THAT THE INFORMATION CONTAINED HEREIN IS CORRECT AS OF
ANY TIME SUBSEQUENT TO ITS DATE.
                                                    
                             ---------------------

                               TABLE OF CONTENTS
                                                    
                                                                        Page
                                                                        ----
 
Available Information.................................................. 
Documents Incorporated by Reference.................................... 
Prospectus Summary..................................................... 
Risk Factors........................................................... 
The Company............................................................ 
Management's Discussion and Analysis of Results of Operations           
 and Financial Condition............................................... 
Plan of Distribution; Selling Stockholders............................. 
Legal Matters.......................................................... 
Experts................................................................ 
Index to Financial Statements.......................................... 

================================================================================

================================================================================

                               2,879,829 SHARES
                    
                    
                    
                    
                    
                    
                               VTEL CORPORATION
                    
                    
                                 COMMON STOCK
                    
                    
                    
                    
                               _________________
                    
                                  PROSPECTUS
                               _________________
                    
                    
                    
                    
                   
                              SEPTEMBER __, 1997

================================================================================
<PAGE>
 
                                    PART II

                    INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 14.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.

  The following table indicates the expenses to be incurred by the Company in
connection with the issuance and distribution of the securities described in
this registration statement, other than underwriting discounts and commissions.

  Securities and Exchange Commission Registration Fee.    $  6,217.82
  Accounting Fees and Expenses........................      67,500.00*
  Legal Fees and Expenses.............................      15,000.00*
  Fees of Transfer Agent and Registrar................       1,000.00*
  Printing and Engraving Fees and Expenses............      10,000.00*
  Miscellaneous.......................................       5,282.18*

     TOTAL............................................    $105,000.00*
                                                          =========== 

*Estimated.

ITEM 15.  INDEMNIFICATION OF DIRECTORS AND OFFICERS

     Section 145 of the Delaware General Corporation Law ("Section 145") permits
indemnification of directors, officers, agents and controlling persons of a
corporation under certain conditions and subject to certain limitations. Article
Ninth of VTEL's Fourth Amended and Restated Certificate of Incorporation, as
amended, provides for the indemnification of directors, officers and other
authorized representatives of VTEL to the maximum extent permitted by the
Delaware General Corporation Law.  Section 145 empowers a corporation to
indemnify any person who was or is a party or is threatened to be made a party
to any threatened, pending or complete action, suit or proceeding, whether civil
criminal, administrative or investigative, by reason of the fact that he is or
was a director, officer or agent of the corporation or another enterprise if
serving at the request of the corporation.  Depending on the character of the
proceeding, a corporation may indemnify against expenses (including attorneys'
fees), judgments, fines and amounts paid in settlement actually and reasonably
incurred in connection with such action, suit or proceeding if the person
indemnified 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. In the case of an action by or in the right of the
corporation, no indemnification may be made with respect to 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 or the
court in which such action or suit was brought shall determine that despite the
adjudication of liability such person is fairly and reasonably entitled to
indemnity for such expenses which the court shall deem proper.  Section 145
further provides that to the extent to indemnity for such expenses which the
court shall deem proper.  Section 145 further provides that to the extent a
director or officer of a corporation has been successful in the defense of any
action, suit or proceeding referred to above or in the defense of any claim,
issue or matter therein, he shall be indemnified against expenses (including
attorney's fees) actually and reasonably incurred by him in connection
therewith.

     Article Ninth of VTEL's Fourth Amended and Restated Certificate of
Incorporation, as amended, permits it to purchase insurance on behalf of any
such person 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 VTEL
would have the power to indemnify him against such liability under the foregoing
provision of the Certificate of Incorporation.

     The registration rights agreements among the Company and the Selling
Stockholders provide for reciprocal indemnification between the Company and the
Selling Stockholders against certain liabilities in connection with this
Offering, including liabilities under the Securities Act.

                                     II-1
<PAGE>
 
ITEM 16.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
 
      (a)       Exhibits
 
      4.1  --   Specimen Certificate for the Common Stock (incorporated by
                reference to Exhibit 4.1 to the Company's Registration Statement
                on Form S-1, File No. 33-4876, as amended). 

      4.2  --   Rights Agreement dated as of July 10, 1996 between VTEL
                Corporation and First National Bank of Boston, which includes
                the form of Certificate of Designations for Designating Series A
                Preferred Stock, $.01 par value, the form of Rights Certificate,
                and the Summary of Rights to Purchase Series A Preferred Stock
                (incorporated by reference to Exhibit 4.1 to the Company's
                Current Report on Form 8-K dated July 10, 1996).

*     4.3  --   Registration Rights Agreement, dated as of May 20, 1997, by and
                among VTEL Corporation, Infinity Investors Limited and Seacrest
                Capital Limited.

*     4.4  --   Agreement dated as of May 19, 1997 between VTEL Corporation and
                Intel Corporation.

      4.5  --   Investor Rights Agreement, dated October 25, 1993 between Intel
                Corporation and VTEL (incorporated by reference to Exhibit 4.1
                to VTEL's Quarterly Report on Form 10-Q for the period ended
                September 30, 1993).

*     4.6  --   Company Affiliate Agreement dated January 6, 1997 among VTEL, 
                CLI, Seacrest Capital Limited and Infinity Investors Limited.

*     5.1  --   Opinion of Jenkens & Gilchrist, a Professional Corporation,
                regarding legality of shares being registered.

*    23.1  --   Consent of Price Waterhouse LLP.

*    23.2  --   Consent of KPMG Peat Marwick LLP.

*    23.3  --   Consent of Jenkens & Gilchrist, A Professional Corporation (to
                be included in Exhibit 5.1 hereof).

*    24.1  --   Power of Attorney (included on Page II-4 hereto).

- --------------------
*    Filed herewith
 
     (b)  Financial Statement Schedules:

          Not Applicable.

ITEM 17.  UNDERTAKINGS

     The undersigned registrant hereby undertakes:

     (1)  To file, during any period in which offers or sales are being made, a
post-effective amendment to this registration statement 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.

     The undersigned registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, each filing of the
registrant's annual report pursuant to section 13(a) or section 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-2
<PAGE>
 
     Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to directors, officers and controlling persons of the
registrant pursuant to the foregoing provisions, or otherwise, the registrant
has been advised that in the opinion of the Securities and Exchange Commission
such indemnification is against public policy as expressed in the Act and is,
therefore, unenforceable.  In the event that a claim for indemnification against
such liabilities (other than the payment by the registrant of expenses incurred
or paid by a director, officer or controlling person of the registrant in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the registrant 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 such indemnification by it is against public
policy as expressed in the Act and will be governed by the final adjudication of
such issue.

                                      II-3
<PAGE>
 
                                  SIGNATURES


     Pursuant to the requirements of the Securities Act of 1933, the registrant
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form S-3 and has duly caused this registration
statement to be signed on its behalf by the undersigned, thereunto duly
authorized, thereunto duly authorized, in the City of Austin, and the State of
Texas, the 8th day of September, 1997.

                                    VTEL Corporation
                                    (Registrant)



                                    By:  /s/ RODNEY S. BOND
                                         -------------------------------------
                                         Rodney S. Bond
                                         Vice President - Finance

                               POWER OF ATTORNEY

     Know All Men By These Presents, that each person whose signature appears
below constitutes and appoints Rodney S. Bond, his true and lawful attorney-in-
fact and agent, with full power and substitution, for him and in his name, place
and stead, in any and all capacities, to sign any or all amendments 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 attorney-in-fact and agent full power and
authority to do and perform each and every act and thing requisite and necessary
to be done in and about the premises, as fully to all intents and purposes as he
might or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agent, or his substitute, may lawfully do or cause to be
done by virtue thereof.

     Pursuant to the requirements of the Securities Act of 1933, this
registration statement has been signed below by the following persons in the
capacities and on the dates indicated.

       Signature                 Title                              Date
       ---------                 -----                              ----

/s/ F.H. MOELLER         Chairman of the Board and Chief       September 8, 1997
- ------------------------  Executive Officer
F.H. ("Dick") Moeller

/s/ JERRY S. BENSON, JR. President and Chief Operating Officer September 8, 1997
- ------------------------
Jerry S. Benson, Jr.

/s/ RODNEY S. BOND       Chief Financial Officer, Vice         September 8, 1997
- ------------------------  President Finance, Treasurer, and 
Rodney S. Bond            Secretary
 
/s/ MAX D. HOPPER        Director                              September 8, 1997
- ------------------------
Max D. Hopper
 
/s/ JOHN V. JAGGERS      Director                              September 8, 1997
- ------------------------ 
John V. Jaggers
 
/s/ ERIC L. JONES        Director                              September 8, 1997
- ------------------------
Eric L. Jones

                                      II-4
<PAGE>
 
/s/ GORDON H. MATTHEWS Director                                September 8, 1997
- ----------------------
Gordon H. Matthews
 
/s/ ARTHUR G. ANDERSON Director                                September 8, 1997
- ----------------------
Arthur G. Anderson
 
/s/ T. GARY TRIMM      Director                                September 8, 1997
- ---------------------
T. Gary Trimm

                                      II-5
<PAGE>
   
                                 EXHIBIT INDEX
 
      4.1  --   Specimen Certificate for the Common Stock (incorporated by
                reference to Exhibit 4.1 to the Company's Registration Statement
                on Form S-1, File No. 33-4876, as amended). 
      4.2  --   Rights Agreement dated as of July 10, 1996 between VTEL
                Corporation and First National Bank of Boston, which includes
                the form of Certificate of Designations for Designating Series A
                Preferred Stock, $.01 par value, the form of Rights Certificate,
                and the Summary of Rights to Purchase Series A Preferred Stock
                (incorporated by reference to Exhibit 4.1 to the Company's
                Current Report on Form 8-K dated July 10, 1996).
*     4.3  --   Registration Rights Agreement, dated as of May 20, 1997, by and
                among VTEL Corporation, Infinity Investors Limited and Seacrest
                Capital Limited.
*     4.4  --   Agreement dated as of May 19, 1997 between VTEL Corporation and
                Intel Corporation.
      4.5  --   Investor Rights Agreement, dated October 25, 1993 between Intel
                Corporation and VTEL (incorporated by reference to Exhibit 4.1
                to VTEL's Quarterly Report on Form 10-Q for the period ended
                September 30, 1993.
*     4.6  --   Company Affiliate Agreement dated January 6, 1997 among VTEL,
                CLI, Seacrest Capital Limited and Infinity Investors Limited.
*     5.1  --   Opinion of Jenkens & Gilchrist, a Professional Corporation,
                regarding legality of shares being registered.
*    23.1  --   Consent of Price Waterhouse LLP.
*    23.2  --   Consent of KPMG Peat Marwick LLP.
*    23.3  --   Consent of Jenkens & Gilchrist, A Professional Corporation (to
                be included in Exhibit 5.1 hereof).
*    24.1  --   Power of Attorney (included on Page II-4 hereto).

- --------------
*    Filed herewith

                                       1

<PAGE>
 
                                                                     EXHIBIT 4.3

                         REGISTRATION RIGHTS AGREEMENT
                         -----------------------------

     This Registration Rights Agreement (this "Agreement") is made and entered
into as of May ____, 1997 by and among VTEL CORPORATION, a Delaware corporation
(the "Company") and INFINITY INVESTORS LIMITED AND SEACREST CAPITAL LIMITED (the
"Investors") pursuant to the Company Affiliate Agreement (as defined below).

     This Agreement is made pursuant to the Company Affiliate Agreement (Series
C Preferred Stock), dated January 6, 1997 (the "Affiliate Agreement"), by and
among the Company, Compression Labs, Incorporated, a Delaware corporation
("CLI") and the Investors in accordance with which the Company has agreed to
provide the registration rights set forth in this Agreement.

     The parties hereby agree as follows:

     SECTION 1.   DEFINITIONS

     As used in this Agreement, the following capitalized terms shall have the
following meanings:

     Act: The Securities Act of 1933, as amended.
     ---                                         

     Affiliate Agreement:  As defined in the preamble hereto.
     -------------------                                     

     Commission:    The Securities and Exchange Commission.
     ----------                                            

     Effective Time of the Merger or Effective Time:  The time and date that the
     ----------------------------------------------                             
Merger is consummated pursuant to the Merger Agreement.

     Exchange Act:  The Securities Exchange Act of 1934, as amended.
     ------------                                                   

     Investors:  As defined in the preamble hereto.
     ---------                                     

     NASD:  National Association of Securities Dealers.  Inc.
     ----                                                    

     Merger:  The merger of a wholly owned subsidiary of the Company with and
     ------                                                                  
into CLI pursuant to which CLI shall become a wholly owned subsidiary of the
Company, as provided for in the Merger Agreement.

     Merger Agreement:  The Agreement and Plan of Merger and Reorganization,
     ----------------                                                       
dated as of January 6, 1997, among the Company, VTEL-Sub, Inc. and CLI.

     Person:  An individual, partnership, corporation, trust or unincorporated
     ------                                                                   
organization, or a government or agency or political subdivision thereof.
<PAGE>
 
     Prospectus:  The prospectus included in the Shelf Registration Statement,
     ----------                                                               
as amended or supplemented by any prospectus supplement and by all other
amendments thereto, including post  effective amendments, and all material
incorporated by reference into such Prospectus.

     Registrable Securities:    Each share of Common Stock of the Company
     ----------------------                                              
acquired by the Investors (i) pursuant to the Merger Agreement, or (ii) upon
exercise of the Series C Warrants until the earliest to occur of (a) the date on
which such shares have been effectively registered under the Act and disposed of
in accordance with the Shelf Registration Statement and (b) the date on which
such shares are distributed to the public pursuant to Rule 144 or Rule 145 under
the Act.

     Series C Warrants:  Those warrants to purchase a total of 375,000 shares of
     -----------------                                                          
Common Stock of CLI, issued on October 24, 1996 by CLI to Infinity Investors
Limited, Brown Simpson LLC and Alpine Capital Partners, Inc.

     Shelf Registration Statement:  As defined in Section 3 hereof.
     ----------------------------                                  

     Underwritten Registration or Underwritten Offering:  A registration in
     -------------------------    ---------------------                    
which securities of the Company are sold to an underwriter for reoffering to the
public.

     SECTION 2.   SECURITIES SUBJECT TO THIS AGREEMENT.  The securities entitled
to the benefits of this Agreement are the Registrable Securities.

     SECTION 3.   SHELF REGISTRATION

     (a) Shelf Registration.  The Company shall:
         ------------------                     

          (x) cause to be filed a shelf registration statement pursuant to Rule
     415 under the Act (the "Shelf Registration Statement") as soon as
     practicable following the date that financial results covering at least 30
     days of the post-Effective Time combined results of the Company and CLI
     have been filed by the Company with the Commission in a Current Report on
     Form 8-K, which Shelf Registration Statement shall provide for resales of
     all Registrable Securities the holders of which shall have provided the
     information required pursuant to Section 3(b) hereof; and

          (y) use their best efforts to cause such Shelf Registration Statement
     to be declared effective by the Commission on or before the 45th day after
     the Current Report on Form 8-K referred to in clause (x) above shall have
     been filed with the Commission.

The Company shall use its best efforts to keep such Shelf Registration Statement
continuously effective, supplemented and amended as required by the provisions
of Section 4 hereof to the extent necessary to ensure that it is available for
resales of Registrable Securities entitled to the benefit of this Section 3(a)
for a period of at least three years following the Effective Time of the Merger
(unless prior to the expiration of such three year period, all of the Series C
Warrants are exercised, in which case the Shelf Registration Statement shall not
be required to remain effective so long as one year has elapsed from the date of
the filing of such Shelf Registration Statement); 
<PAGE>
 
provided, however, that at such time that none of the Series C Warrants remain
outstanding, the Company shall not be obligated to maintain the effectiveness of
the Shelf Registration Statement if either (i) the combined holdings of the
Company's Common Stock held by the Investors represent less than 1% of the
Company's total issued and outstanding Common Stock, or (ii) if the volume
restrictions under Rule 145 would not materially impair the ability of the
Investors to sell all of the Registrable Securities then held by the Investors
in the public market in reliance upon Rule 145 during a period not exceeding
thirty (30) days.

     (b) Provision by Holders of Certain Information in Connection with the
         ------------------------------------------------------------------
Shelf Registration Statement.  No holder of Registrable Securities may include
- ----------------------------                                                  
any of its Registrable Securities in any Shelf Registration Statement pursuant
to this Agreement unless and until such holder furnishes to the Company in
writing, within 10 business days after receipt of a request therefor, such
information as the Company may reasonably request for use in connection with any
Shelf Registration Statement or Prospectus or preliminary Prospectus included
therein. Each Investor agrees to furnish promptly to the Company all information
required to be disclosed in order to make the information previously furnished
to the Company by such Investor not materially misleading.

     SECTION 4.   REGISTRATION PROCEDURES.  In connection with the Shelf
Registration Statement and any Prospectus required by this Agreement to permit
the resale of Registrable Securities, the Company shall:

          (i) use its best efforts to keep such Registration Statement
     continuously effective for the period specified in Section 3 of this
     Agreement; upon the occurrence of any event that would cause the Shelf
     Registration Statement or the Prospectus contained therein to contain a
     material misstatement or omission, the Company shall file promptly an
     appropriate amendment to such Shelf Registration Statement correcting any
     such misstatement or omission;

          (ii) prepare and file with the Commission such amendments and post-
     effective amendments to the Registration Statement as may be necessary to
     keep the Shelf Registration Statement effective for the applicable period
     set forth in Section 3 hereof, or such shorter period as will terminate
     when all Registrable Securities covered by such Shelf Registration
     Statement have been sold; cause the Prospectus to be supplemented by any
     required Prospectus supplement, and as so supplemented to be filed pursuant
     to Rule 424 under the Act, and to comply fully with the applicable
     provisions of Rules 424 and 430A under the Act in a timely manner; and
     comply with the provisions of the Act with respect to the disposition of
     all securities covered by such Shelf Registration Statement during the
     applicable period in accordance with the intended method or methods of
     distribution by the sellers thereof set forth in such Shelf Registration
     Statement or supplement to the Prospectus;

          (iii)  advise the underwriter(s), if any, and selling Investors
     promptly and, if requested by such Persons, to confirm such advice in
     writing, (A) when the Prospectus or any Prospectus supplement or post-
     effective amendment has been filed, and, with respect 
<PAGE>
 
     to the Shelf Registration Statement or any post-effective amendment
     thereto, when the same has become effective, (B) of any request by the
     Commission for amendments to the Shelf Registration Statement or amendments
     or supplements to the Prospectus or for additional information relating
     thereto, (C) of the issuance by the Commission of any stop order suspending
     the effectiveness of the Shelf Registration Statement under the Act or of
     the suspension by any state securities commission of the qualification of
     the Registrable Securities for offering or sale in any jurisdiction, or the
     initiation of any proceeding for any of the preceding purposes, (D) of the
     existence of any fact or the happening of any event that makes any
     statement of a material fact made in the Shelf Registration Statement, the
     Prospectus, any amendment or supplement thereto, or any document
     incorporated by reference therein untrue, or that requires the making of
     any additions to or changes in the Shelf Registration Statement or the
     Prospectus in order to make the statements therein not misleading. If at
     any time the Commission shall issue any stop order suspending the
     effectiveness of the Shelf Registration Statement, or any state securities
     commission or other regulatory authority shall issue an order suspending
     the qualification or exemption from qualification of the Registrable
     Securities under state securities or Blue Sky laws, the Company shall use
     its best efforts to obtain the withdrawal or lifting of such order at the
     earliest possible time;

          (iv) furnish to each of the selling Investors and each of the
     underwriter(s), if any, before filing with the Commission, copies of the
     Shelf Registration Statement or any Prospectus included therein or any
     amendments or supplements to any such Shelf Statement or Prospectus
     (including all documents incorporated by reference after the initial filing
     of such Shelf Registration Statement), and the Company will not file the
     Shelf Registration Statement or Prospectus or any amendment or supplement
     to any Shelf Registration Statement or Prospectus to which a selling
     Investor of Registrable Securities covered by such Shelf Registration
     Statement or the underwriter(s), if any, shall reasonably object within
     three business days after the receipt thereof;

          (v) if requested by any selling Investor or the underwriter(s), if
     any, incorporate in the Shelf Registration Statement or Prospectus,
     pursuant to a supplement or post-effective amendment if necessary, such
     information as such selling Investor and underwriter(s), if any, may
     reasonably request to have included therein, information with respect to
     the number of Registrable Securities being sold to such underwriter(s), the
     purchase price being paid therefor and any other terms of the offering of
     the Registrable Securities to be sold in such offering; and make all
     required filings of such Prospectus supplement or post-effective amendment
     as soon as practicable after the Company is notified of the matters to be
     incorporated in such Prospectus supplement or post-effective amendment;

          (vi) furnish to each selling Investor and each of the underwriter(s),
     if any, without charge, at least one copy of the Shelf Registration
     Statement, as first filed with the Commission, and of each amendment
     thereto, including all documents incorporated by reference therein and all
     exhibits (including exhibits incorporated therein by reference);
<PAGE>
 
          (vii)  deliver to each selling Investor and each of the
     underwriter(s), if any, without charge, as many copies of the Prospectus
     (including each preliminary prospectus) and any amendment or supplement
     thereto as such Persons reasonably may request; the Company hereby consent
     to the use of the Prospectus and any amendment or supplement thereto by
     each of the selling Investor and each of the underwriter(s), if any, in
     connection with the offering and the sale of the Registrable Securities
     covered by the Prospectus or any amendment or supplement thereto;

          (viii)  prior to any public offering of Registrable Securities, the
     Company shall register or qualify the Registrable Securities under the
     securities or Blue Sky laws of such jurisdictions as the selling Investors
     or underwriter(s) may request and do any and all other acts or things
     reasonably necessary or advisable to enable the disposition in such
     jurisdictions of the Registrable Securities covered by the Shelf
     Registration Statement; provided, however, that the Company shall not be
     required to register or qualify as a foreign corporation where it is not
     now so qualified or to take any action that would subject it to the service
     of process in suits or to taxation, other than as to matters and
     transactions relating to the Shelf Registration Statement, in any
     jurisdiction where it is not now so subject;

          (ix) cooperate with the selling Investors and the underwriter(s), if
     any, to facilitate the timely preparation and delivery of certificates
     representing Registrable Securities to be sold and not bearing any
     restrictive legends; and enable such Registrable Securities to be in such
     denominations and registered in such names as the Holders or the
     underwriter(s), if any, may request prior to any sale of Registrable
     Securities made by such underwriter(s);

          (x) if any fact or event contemplated by clause (iii)(D) above shall
     exist or have occurred, prepare a supplement or post-effective amendment to
     the Shelf Registration Statement or related Prospectus or any document
     incorporated therein by reference or file any other required document so
     that, as thereafter delivered to the purchasers of Registrable Securities,
     the Prospectus will not contain an untrue statement of a material fact or
     omit to state any material fact necessary to make the statements therein
     not misleading;

          (xi) cooperate and assist in any filings required to be made with the
     NASD and in the performance of any due diligence investigation by any
     underwriter (including any "qualified independent underwriter") that is
     required to be retained in accordance with the rules and regulations of the
     NASD;

          (xii)  otherwise use its reasonable efforts to comply with all
     applicable rules and regulations of the Commission, and make generally
     available to its security holders, as soon as practicable, a consolidated
     earnings statement meeting the requirements of Rule 158 (which need not be
     audited) for the twelve-month period (A) commencing at the end of any
     fiscal quarter in which Registrable Securities are sold to underwriters in
     a firm or best efforts Underwritten Offering or (B) if not sold to
     underwriters in such an offering, 
<PAGE>
 
     beginning with the first month of the Company's first fiscal quarter
     commencing after the effective date of the Registration Statement;

     Each Investor agrees that, upon receipt of any notice from the Company of
the existence of any fact of the kind described in Section 4(iii)(D) hereof,
such Investor will forthwith discontinue disposition of Registrable Securities
pursuant to the Shelf Registration Statement until such Investor's receipt of
the copies of the supplemented or amended Prospectus contemplated by Section
4(x) hereof, or until it is advised in writing (the 'Advice") by the Company
that the use of the Prospectus may be resumed, and has received copies of any
additional or supplemental filings that are incorporated by reference in the
Prospectus.  If so directed by the Company, each Investor will deliver to the
Company (at the Company's expense) all copies, other than permanent file copies
then in such Investor's possession, of the Prospectus covering such Registrable
Securities that was current at the time of receipt of such notice.  In the event
the Company shall give any such notice, the time period regarding the
effectiveness of the Shelf Registration Statement set forth in Section 3 hereof
shall be extended by the number of days during the period from and including the
date of the giving of such notice pursuant to Section 4(iii)(D) hereof to and
including the date when each selling Investor covered by such Shelf Registration
Statement shall have received the copies of the supplemented or amended
Prospectus contemplated by Section 4(x) hereof or shall have received the
Advice.

     SECTION 5.   REGISTRATION EXPENSES

     (a) All expenses incident to the Company's performance of or compliance
with this Agreement will be borne by the Company, regardless of whether the
Shelf Registration Statement becomes effective, including without limitation:
(i) all registration and filing fees and expenses; (ii) all fees and expenses of
compliance with federal securities and state Blue Sky or securities laws; (iii)
all expenses of printing; (iv) all fees and disbursements of counsel for the
Company; (v) all application and filing fees in connection with listing
Registrable Securities on a national securities exchange or automated quotation
system pursuant to the requirements hereof; and (vi) all fees and disbursements
of independent certified public accountants of the Company (including the
expenses of any comfort letters required by or incident to such performance).

     The Company will bear its internal expenses (including, without limitation,
all salaries and expenses of its officers and employees performing legal or
accounting duties), the expenses of any annual audit and the fees and expenses
of any Person, including special experts, retained by the Company.  The Company
shall not be liable for or be required to pay (i) any legal fees or expenses of
counsel for the Investors, or (ii) any underwriting discounts, commissions or
stock transfer taxes relating to the Registrable Securities.

     SECTION 6.   INDEMNIFICATION

     (a) The Company agrees to indemnify and hold harmless each Investor and
each Person, if any, who controls any Investor within the meaning of Section 15
of the Act or Section 20 of the Exchange Act, from and against any and all
losses, claims, damages, liabilities and expenses arising out of or based upon
any untrue statement or alleged untrue statement of a 
<PAGE>
 
material fact contained in the Shelf Registration Statement or Prospectus (or
any amendment or supplement thereto), or arising out of or based upon any
omission or alleged omission to state therein a material fact required to be
stated therein or necessary to make the statements therein not misleading,
except insofar as such losses, claims, damages, liabilities or expenses arise
out of or are based upon any untrue statement or omission or alleged untrue
statement or omission which has been made therein or omitted therefrom in
reliance upon and in conformity with the information relating to the Investors
furnished in writing to the Company by the Investors expressly for use in
connection therewith. The foregoing indemnity agreement shall be in addition to
any liability which the Company may otherwise have.

     (b) If any action, suit or proceeding shall be brought against the
Investors or any Person controlling the Investors in respect of which indemnity
may be sought against the Company, the Investors or such controlling Person
shall promptly notify the parties against whom indemnification is being sought
(the "indemnifying parties"), and such indemnifying parties shall assume the
defense thereof, including the employment of counsel and payment of all fees and
expenses; provided, however, that failure to so notify an indemnifying party
shall not relieve such indemnifying party from any liability unless and to the
extent it is prejudiced as a proximate result of such failure.  The Investors or
any such controlling Person shall have the right to employ separate counsel in
any such action, suit or proceeding and to participate in the defense thereof,
but the fees and expenses of such counsel shall be at the expense of the
Investors or such controlling Person unless (i) the indemnifying parties have
agreed in writing to pay such fees and expenses, (ii) the indemnifying parties
have failed to assume the defense and employ counsel, or (iii) the named parties
to any such action, suit or proceeding (including any impleaded parties) include
both the Investors or such controlling Person and the indemnifying parties and
the Investors or such controlling Person shall have been advised in writing by
its counsel that representation of such indemnified party and any indemnifying
party by the same counsel would be inappropriate under applicable standards of
professional conduct (whether or not such representation by the same counsel has
been proposed) due to actual or potential differing interests between them (in
which case the indemnifying party shall not have the right to assume the defense
of such action, suit or proceeding on behalf of the Investors or such
controlling Person).  It is understood, however, that the indemnifying parties
shall, in connection with any one such action, suit or proceeding or separate
but substantially similar or related actions, suits or proceedings in the same
jurisdiction arising out of the same general allegations or circumstances, be
liable for the reasonable fees and expenses of only one separate firm of
attorneys (in addition to any local counsel) at any time for the Investors and
controlling Persons not having actual or potential differing interests with the
Investors or among themselves, which firm shall be designated in writing by the
Investors, and that all such fees and expenses shall be reimbursed as they are
incurred.  The indemnifying parties shall not be liable for any settlement of
any such action, suit or proceeding effected without their written consent, but
if settled with such written consent, or if there be a final judgment for the
plaintiff in any such action, suit or proceeding, the indemnifying parties agree
to indemnify and hold harmless the Investors, to the extent provided in
paragraph (a), and any such controlling Person from and against any loss, claim,
damage, liability or expense by reason of such settlement or judgment.
<PAGE>
 
     (c) Each Investor, severally and not jointly, agrees to indemnify and hold
harmless the Company, and their directors and officers, and any Person who
controls the Company within the meaning of Section 15 of the Act or Section 20
of the Exchange Act to the same extent as the indemnity from the Company to the
Investors set forth in paragraph (a) hereof, but only with respect to
information relating to the Investors furnished in writing by or on behalf of
the Investors expressly for use in the Shelf Registration Statement or
Prospectus; provided, however, that no Investor shall be liable for any claims
hereunder in an amount in excess of the net proceeds received by such Investor
from the sale of the Registrable Securities pursuant to the Shelf Registration
Statement.  If any action, suit or proceeding shall be brought against the
Company, any of their directors or officers, or any such controlling Person
based on the Shelf Registration Statement or Prospectus, and in respect of which
indemnity may be sought against the Investors pursuant to this paragraph (c),
the Investors shall have the rights and duties given to the Company by paragraph
(b) above (except that if the Company shall have assumed the defense thereof the
Investors shall not be required to do so, but may employ separate counsel
therein and participate in the defense thereof, but the fees and expenses of
such counsel shall be at the Investors' expense), and the Company, their
directors and officers, and any such controlling Person shall have the rights
and duties given to the Investors by paragraph (b) above.

     (d) If the indemnification provided for in this Section 6 is unavailable
(except if inapplicable according to its terms) to an indemnified party under
paragraphs (a) or (c) hereof in respect of any losses, claims, damages,
liabilities or expenses referred to therein, then an indemnifying party, in lieu
of indemnifying such indemnified party, shall contribute to the amount paid or
payable by such indemnified party as a result of such losses, claims, damages,
liabilities or expenses (i) in such proportion as is appropriate to reflect the
relative benefits received by the Company on the one hand and the Investors on
the other hand from their sale of Registrable Securities (it being expressly
understood and agreed that the relative benefits received by the Company from
the sale of the Registrable Securities shall be equal to the amount of net
proceeds received by the Company from the sale of the Registrable Securities to
the Investors), or (h) if the allocation provided by clause (i) above is not
permitted by applicable law, in such proportion as is appropriate to reflect not
only the relative benefits referred to in clause (i) above but also the relative
fault of the Company on the one hand and the Investors on the other in
connection with the statements or omissions that resulted in such losses,
claims, damages, liabilities or expenses, as well as any other relevant
equitable considerations.  The relative fault of the Company on the one hand and
the Investors on the other hand shall be determined by reference to, among other
things, whether the untrue or alleged untrue statement of a material fact or the
omission or alleged omission to state a material fact relates to information
supplied by the Company on the one hand or by the Investors on the other hand
and the parties' relative intent, knowledge, access to information and
opportunity to correct or prevent such statement or omission.

     (e) The Company and the Investors agree that it would not be just and
equitable if contribution pursuant to this Section 6 were determined by a pro
rata allocation or by any other method of allocation that does not take account
of the equitable considerations referred to in paragraph (d) above.  The amount
paid or payable by an indemnified party as a result of the losses, claims,
damages, liabilities and expenses referred to in paragraph (d) above shall be
deemed to include, subject to the limitations set forth above, any legal or
other expenses 
<PAGE>
 
reasonably incurred by such indemnified party in connection with investigating
any claim or defending any such action, suit or proceeding. Notwithstanding the
provisions of this Section 6, the Investors shall not be required to contribute
any amount in excess of the amount by which the net proceeds received by them in
connection with the sale of the Registrable Securities exceeds the amount of any
damages which the Investors have otherwise been required to pay by reason of
such untrue or alleged untrue statement or omission or alleged omission. No
Person guilty of fraudulent misrepresentation (within the meaning of Section 1
l(f) of the Act) shall be entitled to contribution from any Person who was not
guilty of such fraudulent misrepresentation.

     (f) The indemnity and contribution agreements contained in this Section 6
and the representations and warranties of the Company set forth in this
Agreement shall remain operative and in full force and effect, regardless of any
investigation made by or on behalf of the Investors or any Person controlling
the Investors, the Company, its directors or officers or any Person controlling
the Company.  A successor to the Investors or any Person controlling the
Investors, or to the Company, its directors or officers or any Person
controlling the Company shall be entitled to the benefits of the indemnity,
contribution and reimbursement agreements contained in this Section 6.

     (g) No indemnifying party shall, without the prior written consent of the
indemnified party, effect any settlement of any pending or threatened action,
suit or proceeding in respect of which any indemnified party is or could have
been a party and indemnity could have been sought hereunder by such indemnified
party, unless such settlement includes an unconditional release of such
indemnified party from all liability on claims that are the subject matter of
such action, suit or proceeding.

     SECTION 7.   PARTICIPATION IN UNDERWRITTEN REGISTRATIONS

     No Investor may participate in any Underwritten Registration hereunder
unless such Investor (a) agrees to sell such Investor's Registrable Securities
on the basis provided in any underwriting arrangements approved by the Persons
entitled hereunder to approve such arrangements and (b) completes and executes
all reasonable questionnaires, powers of attorney, indemnities, underwriting
agreements, lock-up letters and other documents required under the terms of such
underwriting arrangements.

     SECTION 8.   SELECTION OF UNDERWRITERS

     The Investors covered by the Shelf Registration Statement who desire to do
so may sell such Registrable Securities in an Underwritten Offering.  In any
such Underwritten Offering, the investment banker or investment bankers and
manager or managers that will administer the offering will be selected by the
Investors of a majority of the Registrable Securities included in such offering;
provided, that such investment bankers and managers must be reasonably
satisfactory to the Company.
<PAGE>
 
     SECTION 9.  MISCELLANEOUS

     (a) Effective Date.  This Agreement shall become effective from and after
         --------------                                                       
the Effective Time.  In the event that the Merger Agreement shall terminate
prior to the occurrence of the Effective Time, this Agreement shall
automatically terminate and shall be of no force or effect.

     (b) Amendments and Waivers.  The provisions of this Agreement may not be
         ----------------------                                              
amended, modified or supplemented, and waivers or consents to or departures from
the provisions hereof may not be given unless the Company has obtained the
written consent of Investors of a majority of the Registrable Securities.

     (c) Notices.  All notices and other communications provided for or
         -------                                                       
permitted hereunder shall be made in writing by hand-delivery, first-class mail
(registered or certified, return receipt requested), telex, telecopier, or air
courier guaranteeing overnight delivery:

          (i)  if to an Investor, at the address set forth on the signature page
     hereof;

         (ii)  if to the Company:

               VTEL Corp.
               108 Wild Basin Road
               Austin, TX  78746

               Telecopier No.:  (512) 314-2862
               Attention:  Chief Financial Officer

          With a copy to:

               Jenkens & Gilchrist, P.C.
               1445 Ross Avenue, Suite 3200
               Dallas, TX  75202

               Telecopier No.:  (214) 855-4300
               Attention:  L. Steven Leshin, Esq.

     All such notices and communications shall be deemed to have been duly
given: at the time delivered by hand, if personally delivered; five business
days after being deposited in the mail, postage prepaid, if mailed; when
answered back, if telexed; when receipt acknowledged, if telecopied; and on the
next business day, if timely delivered to an air courier guaranteeing overnight
delivery.

     (c) Counterparts.  This Agreement may be executed by facsimile and in any
         ------------                                                         
number of counterparts and by the parties hereto in separate counterparts, each
of which when so executed shall be deemed to be an original and all of which
taken together shall constitute one and the same agreement.
<PAGE>
 
     (d) Headings.  The headings in this Agreement are for convenience of
         --------                                                        
reference only and shall not limit or otherwise affect the meaning hereof.

     (e) Governing Law.  THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN
         -------------                                                       
ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS, WITHOUT REGARD TO THE CONFLICT
OF LAW RULES THEREOF.

     (f) Severability.  In the event that any one or more of the provisions
         ------------                                                      
contained herein, or the application thereof in any circumstance, is held
invalid, illegal or unenforceable, the validity, legality and enforceability of
any such provision in every other respect and of the remaining provisions
contained herein shall not be affected or impaired thereby.

     (g) Entire Agreement.  This Agreement together with the Affiliate Agreement
         ----------------                                                       
referred to above is intended by the parties as a final expression of their
agreement and intended to be a complete and exclusive statement of the agreement
and understanding of the parties hereto in respect of the subject matter
contained herein.  There are no restrictions, promises, warranties or
undertakings, other than those set forth or referred to herein with respect to
the registration rights granted by the Company with respect to the Registrable
Securities.  This Agreement supersedes all prior agreements and understandings
between the parties with respect to such subject matter; provided, nothing
herein is intended to modify, amend or terminate the Affiliate Agreement, which
shall continue in full force and effect.

     (h) Successors and Assigns.  This Agreement shall be assignable by the
         ----------------------                                            
Investors upon written notification to the Company and the agreement of the
assignee to be bound by the provisions hereof.  To the extent that this
Agreement is assigned in accordance with the provisions of this Section, all
shares of Common Stock meeting the definition of Registrable Securities
immediately preceding such assignment shall remain Registrable Securities in the
hands of the assignee for all purposes hereunder.

                           [signature page follows]
<PAGE>
 
     IN WITNESS WHEREOF, the parties have executed this Agreement as of the date
first written above.

                              Investors:

                              INFINITY INVESTORS LIMITED

                              By:   HW Finance Partners, L.P.,
                                    Investment Advisor

                                    By:  HW Finance, L.L.C.,
                                         its General Partner

                                         By:  /s/ Clark K. Hunt
                                              -----------------
                                              Clark K. Hunt, Vice President
                                              and a Manager

                              27 Wellington Road
                              Cork, Ireland

                                    With copies to:
                                    HW Finance Partners, L.P.
                                    4000 Thanksgiving Tower
                                    1601 Elm Street
                                    Dallas, Texas  75201

                                    and

                                    Victor Zanetti, Esq.
                                    Arter & Hadden
                                    1717 Main Street, Suite 4100
                                    Dallas, Texas  75201
<PAGE>
 
                              SEACREST CAPITAL LIMITED

                              By:   Sandera Capital Management, L.P.,
                                    Investment Advisor

                                    By:  Sandera Capital, L.L.C.,
                                         its General Partner


                                         By:  /s/ Clark K. Hunt
                                              -----------------------------
                                              Clark K. Hunt, Vice President
                                              and a Manager

                              27 Wellington Road
                              Cork, Ireland

                                    With copies to:
                                    HW Finance Partners, L.P.
                                    4000 Thanksgiving Tower
                                    1601 Elm Street
                                    Dallas, Texas  75201

                                    and

                                    Victor Zanetti, Esq.
                                    Arter & Hadden
                                    1717 Main Street, Suite 4100
                                    Dallas, Texas  75201


                              The Company:

                              VTEL CORPORATION

                              By:   /s/ Rodney S. Bond
                                    ----------------------------------
                              Name:
                                    ----------------------------------
                              Title:
                                    ----------------------------------

<PAGE>
 
                                                                     EXHIBIT 4.4

                                   AGREEMENT


     This Agreement ("Agreement") is made and entered into as of May 19, 1997 by
and between INTEL CORPORATION, a Delaware corporation ("Intel"), and VTEL
CORPORATION, a Delaware corporation ("VTEL").

     A.   Intel and VTEL have entered into a Development and License Agreement
dated effective as of October 22, 1993 (the "Development and License
Agreement");

     B.   Pursuant to Section 2.5 of the Development and License Agreement, upon
execution thereof, Intel paid to VTEL the amount of $3,000,000 to be used for
engineering expenses attributable to tasks undertaken under the Development and
License Agreement; and

     C.   Pursuant to Section 2.6 of the Development and License Agreement, on
October 22, 1996, VTEL became obligated to refund to Intel $901,170 of the
$3,000,000 previously advanced by Intel to VTEL but not earned by VTEL for NRE
funding (as defined therein); and

     D.   In lieu of the obligation of VTEL to refund to Intel the amount of
$901,170 due and owing by VTEL to Intel under the Development and License
Agreement in respect of unexpended NRE funding, VTEL and Intel have agreed that
VTEL shall issue to Intel 155,040 shares of its common stock in full
satisfaction of VTEL's obligation to refund $901,170 to Intel as aforesaid and
the parties have reached the agreements herein contained.

     NOW, THEREFORE, in consideration of the forgoing recitals and mutual
promises hereinafter set forth and for other good and valuable consideration,
the receipt and sufficiency of which is hereby acknowledged, the parties hereto
agree as follows:

     1.   Issuance of Stock in Satisfaction of Unfunded NRE Reimbursement.
          ---------------------------------------------------------------  
Within ten (10) business days of the execution of this Agreement, VTEL shall
cause to be delivered to Intel a stock certificate representing 155,040 shares
of VTEL common stock (the "Shares").

     2.   Satisfaction and Discharge.  Intel agrees that effective upon receipt
          --------------------------                                           
of the stock certificate referred to in paragraph 1 above, the obligation of
VTEL to refund to Intel any amounts previously advanced by Intel to VTEL under
Section 2.5 of the Development and License Agreement shall be satisfied and
discharged and shall be of no further effect, and shall be deemed satisfied in
all respects by the delivery of the Shares in lieu of the cash amount otherwise
due under Section 2.6 of the Development and License Agreement.  Upon receipt of
such stock certificate, Intel shall promptly return to VTEL the Letter of Credit
(as defined in the Development and License Agreement), which as of the date
hereof has an undrawn face amount of $888,670, and VTEL's obligations to
maintain such standby Letter of Credit under the terms of the Development and
License Agreement shall terminate.  Intel agrees to make no further draws on the
Letter of Credit from and after the date hereof.  Except as set forth herein,
the 
<PAGE>
 
Development and License Agreement shall continue in accordance with its terms
and shall not otherwise be modified.

     3.   Securities Act Representations.  Intel represents and warrants to VTEL
          ------------------------------                                        
as follows:

          (i)   Intel acknowledges that it has had an opportunity to discuss the
business, affairs and current prospects of VTEL with its officers. Intel further
acknowledges having had access to information about VTEL that it has requested.

          (ii)   The Shares that Intel is acquiring hereunder are being acquired
for its own account, not as a nominee or agent and not with a view to or in
connection with the sale or distribution of any part thereof.

          (iii)  Intel understands that the Shares have not been registered
under the Securities Act of 1933 (the "Securities Act") on the basis that the
sale provided for herein is exempt from registration under the Securities Act
and that the reliance of VTEL on such exemption is predicated in part on Intel's
representation set forth in this Agreement.

          (iv)   Intel acknowledges that it is able to fend for itself in the
transactions contemplated by this Agreement and has the ability to bear the
economic risk of its investment pursuant to this Agreement.

          (v)    Intel understands that the Shares are restricted securities
within the meaning of Rule 144 under the Securities Act; that the Shares are not
registered and must be held indefinitely unless they are subsequently registered
or an exemption from such registration is available; that in any event, the
exemption from registration under Rule 144 will not be available for at least
one year.

          (vi)   It is understood that the certificates representing the Shares
will be legended as follows:

     THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE BEEN ACQUIRED FOR
     INVESTMENT AND NOT WITH A VIEW TO, OR IN CONNECTION WITH, THE SALE OR
     DISTRIBUTION THEREOF.  NO SUCH SALE OR DISPOSITION MAY BE AFFECTED WITHOUT
     AN EFFECTIVE REGISTRATION STATEMENT RELATED THERETO OR AN EXEMPTION FROM
     SUCH REGISTRATION UNDER THE UNITED STATES SECURITIES ACT OF 1933, AS
     AMENDED.

     4.    Representations by VTEL. VTEL represents and warrants to Intel as 
           ------------------------
           follows:

          (i)    VTEL has filed all reports required to be filed with the
Securities and Exchange Commission ("SEC") pursuant to the Securities Act and
the Securities Exchange Act of 1934, and all such filings comply as to form, in
all material respects, with the rules and regulations promulgated by the SEC
thereunder. No such filing contains any untrue statement of
<PAGE>
 
a material fact or omits to state a material fact necessary in order to make the
statements made therein, in light of the circumstances under which they are
made, not misleading.

          (ii) Since the date of VTEL's most recent SEC filing on Form 10-K or
Form 10-Q, there has been no material adverse change in the assets, liabilities,
financial condition, business, operations or affairs of VTEL from that reflected
in the financial statements contained in such filing, except changes in the
ordinary course of business which have not been, in the aggregate, materially
adverse to VTEL.

          (iii)     There are no actions, suits, proceedings or investigations
pending, or, to VTEL's best knowledge, threatened, against VTEL or any of its
properties before any court or governmental agency which has not been disclosed
in VTEL's SEC filings.  VTEL is not a party to or subject to the provisions of
any order, writ, injunction, judgment, or decree of any court or governmental
agency or instrumentality which is not disclosed in VTEL's SEC filings.

     5.   Registration.  VTEL agrees to file a Form S-3 Registration Statement
          ------------                                                        
registering for public sale the Shares of VTEL common stock issued by VTEL to
Intel, including (without limitation) the shares issued to Intel by VTEL
pursuant to the terms hereof and shares issued by VTEL to Intel pursuant to the
Common Stock and Warrant Purchase Agreement dated October 25, 1993 between VTEL
and Intel, and shares issued to Intel pursuant to the Warrant to Purchase
1,199,124 shares of Common Stock of VTEL issued to Intel pursuant to such
aforesaid Common Stock and Warrant Purchase Agreement; provided, VTEL shall have
no obligation to cause such Registration Statement to be filed until after the
occurrence of the consummation of the pending acquisition of Compression Labs,
Incorporated by VTEL (the "Merger") and the lapse of all restriction periods
necessary in order for such Merger to be accounted for as a pooling of
interests. Notwithstanding anything to the contrary contained herein, such
Registration Statement shall be filed by VTEL no later than the 180th day
following the consummation of the Merger or, in the event that the Merger shall
not have been consummated by September 30, 1997, such Registration Statement
shall be filed by VTEL no later than November 30, 1997.

     6.   Counterparts.  This Agreement may be executed in any number of
          ------------                                                  
counterparts, each of which shall be an original, but all of which shall
constitute one instrument.

     7.   Governing Law.  This Agreement shall be governed by the laws of
          -------------                                                  
Delaware.

     8.   Entire Agreement.  This Agreement constitutes the entire agreement
          ----------------                                                  
between the parties with respect to the subject matter hereof.

     9.   Successors and Assigns.  This Agreement shall be binding upon the
          ----------------------                                           
parties and their successors and assigns.
<PAGE>
 
     IN WITNESS WHEREOF, the parties have executed this Agreement as of the day
and year first above written.

                                    VTEL CORPORATION
                                    108 Wild Basin Road
                                    Austin, Texas  78746


                                    By:  /s/ Rodney S. Bond
                                         -----------------------------
                                         Rodney S. Bond
                                         Vice President-Finance


                                    INTEL CORPORATION
                                    2200 Mission College Boulevard
                                    Santa Clara, California  95052


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

<PAGE>
 
                                                                     EXHIBIT 4.6

                          COMPANY AFFILIATE AGREEMENT
                           (Series C Preferred Stock)

     AGREEMENT (hereinafter referred to as the "Agreement") entered into as of
January 6, 1997, between VTEL Corporation, a Delaware corporation (hereinafter
referred to as the "Acquiror"), Compression Labs, Incorporated, a Delaware
corporation (the "Company"), and the undersigned stockholders (the
"Stockholders") of the Company.

                              W I T N E S S E T H:

     WHEREAS, the Acquiror, the Company and VTEL-Sub, Inc., a Delaware
corporation (hereinafter referred to as the "Subsidiary"), propose to enter, or
have entered into an Agreement and Plan of Merger and Reorganization expected to
be dated, or dated January 6, 1997 (hereinafter referred to as the "Merger
Agreement"), pursuant to which the Subsidiary, which is wholly-owned by the
Acquiror, will be merged into the Company (the "Merger") and the Company will
become a wholly-owned subsidiary of the Acquiror;

     WHEREAS, upon the consummation of the Merger and in connection therewith,
the Stockholders will become the owners of shares of Common Stock of Acquiror
(hereinafter referred to as the "Acquiror Shares"); and

     WHEREAS, it is intended that the transactions contemplated by the Merger
Agreement will be treated as a "pooling of interests" in accordance with
generally accepted accounting principles and the applicable General Rules and
Regulations published by the Securities and Exchange Commission (the
"Commission").

     NOW, THEREFORE, in consideration of the promises and the mutual agreements,
provisions and covenants set forth in the Merger Agreement, and hereinafter in
this Agreement, it is hereby agreed as follows:

     1.   Each of the Stockholders hereby severally agree that:

          (a) It may be deemed to be an "affiliate" of the Company within the
meaning of Rule 145 under the Securities Act of 1933, as amended (the
"Securities Act"), and Accounting Series Release No. 130, as amended, of the
Commission.

          (b) It will not surrender for conversion or otherwise attempt to
convert any shares of the Company's Series C Preferred Stock (or any part
thereof) into shares of common stock of the Company during the period commencing
on the date hereof through the Effective Time, as defined in the Merger
Agreement, of the Merger.

          (c) It will not sell, contract to sell or otherwise agree to sell or
otherwise transfer any capital stock of the Company or any part thereof or any
Acquiror Shares or any part thereof or otherwise reduce its risk relative to any
of such shares of capital stock of the Company or any Acquiror Shares until such
time after the Effective Time, as defined in the Merger Agreement, of the 
<PAGE>
 
Merger as financial results covering at least thirty (30) days of the post-
Effective Time combined operations of Acquiror and the Company have been, within
the meaning of said Accounting Series Release No. 130, as amended, filed by the
Acquiror with the Commission in the Current Report on Form 8-K called for by
Section 2(a) hereof; provided, however, the foregoing shall not restrict any
such holder from engaging in any sale, transfer, exchange or hedging
transactions with respect to such shares effected at least sixty (60) days prior
to the Effective Time, unless the Acquiror shall determine that any sale,
transfer, exchange or hedge transaction within such sixty (60) day period
preceding the Effective Time would not cause the Merger to be subject to any
accounting treatment other than pooling of interests accounting treatment and
the Acquiror shall consent thereto in a writing delivered to the Stockholders;
provided, further, the Stockholders agree that they will not sell, transfer or
exchange any such shares that they might otherwise be permitted to sell,
transfer or exchange pursuant to the preceding proviso unless the Acquiror is
notified in writing of such sale, transfer or exchange and the transferor
Stockholder shall have caused the transferee to assume and be bound by the
restrictions and agreements contained herein pursuant to a written instrument,
in form and substance reasonably satisfactory to the Acquiror and the Company,
delivered to the Acquiror and the Company prior to effecting such sale, transfer
or exchange, notwithstanding anything in the preceding proviso to the contrary.

          (d) It agrees to the provisions of the Merger Agreement providing for
the conversion of each share of Series C Preferred Stock into the right to
receive 3.15 Acquiror Shares (subject to adjustments for stock splits,
recapitalizations and other events specified in the Merger Agreement) in
accordance with and pursuant to the Series C Preferred Stock Conversion Ratio,
as therein defined (which Series C Conversion Ratio may not be amended without
the written consent of the Stockholders), and irrevocably agrees to vote all
shares of Series C Preferred Stock and common stock of the Company held by the
undersigned at the special meeting of the Company's stockholders called to
consider and to vote all such shares for the approval of the Merger Agreement
and the Merger.

          (e) It hereby waives and relinquishes its right of first refusal to
purchase shares of common stock of the Company set forth in Section 3.18 of the
Convertible Preferred Stock Purchase Agreement, dated as of October 24, 1996,
between the Company, Infinity Investors, Ltd. and Seacrest Capital Limited and
waives any violation or breach thereof arising by virtue of the execution,
delivery and performance of the Stock Option Agreement by the Company pursuant
to the Merger Agreement, affording the Acquiror the option to purchase up to
3,120,500 shares of the Company's Common Stock, and/or by virtue of the exercise
by the Acquiror of any rights therein granted (provided, however, such waiver
and relinquishment shall apply solely to the execution, delivery and performance
of the Stock Option Agreement and the exercise of the rights therein granted,
and shall not extend to any other transaction entered into by the Company
subsequent thereto with respect to which such right is applicable).

          (f) Subject in any event to paragraph (c) of this Section 1, it agrees
not to offer, sell, pledge, transfer or otherwise dispose of any of the Acquiror
Shares unless at that time either:

               (i) such transaction shall be permitted pursuant to the
provisions of Rule 145(d) under the Securities Act;
<PAGE>
 
               (ii) counsel representing the applicable Stockholder,
satisfactory to the Acquiror, shall have advised the Acquiror in a written
opinion letter satisfactory to the Acquiror and the Acquiror's counsel and upon
which the Acquiror and its counsel may rely, that no registration under the
Securities Act would be required in connection with the proposed sale, transfer
or other disposition;

               (iii) a registration statement under the Securities Act covering
the Acquiror Shares proposed to be sold, transferred or otherwise disposed of,
describing the manner and terms of the proposed sale, transfer or other
disposition, and containing a current prospectus under the Securities Act, shall
be effective under the Securities Act; or

               (iv) an authorized representative of the Commission shall have
rendered written advice to the applicable Stockholder (sought by such
Stockholder or counsel to such Stockholder, with a copy thereof and of all other
related communications delivered to the Acquiror) to the effect that the
Commission would take no action, or that the staff of the Commission would not
recommend that the Commission take action, with respect to the proposed sale,
transfer or other disposition if consummated.

          (g)  (1) Until the financial results described in paragraph (c) of
this Section 1 have been filed or published as described therein, and until a
public sale of the Acquiror Shares represented by such certificate has been made
in compliance with one of the alternative conditions set forth in the
subparagraphs of paragraph (f) of this Section 1, all certificates representing
the Acquiror Shares deliverable to the Stockholders pursuant to the Merger
Agreement and in connection with the Merger and any certificates subsequently
issued with respect thereto or in substitution therefor shall bear a legend
substantially as follows:

          "The shares represented by this certificate may not be offered, sold,
          pledged, transferred or otherwise disposed of except in accordance
          with paragraph (d) of Rule 145 promulgated by the Securities and
          Exchange Commission, and the other conditions specified in the Company
          Affiliate Agreement dated as of January 6, 1997, between VTEL
          Corporation, the Company and the registered holder, a copy of which
          Company Affiliate Agreement may be inspected by the holder of this
          certificate at the offices of VTEL Corporation or VTEL Corporation
          will furnish a copy thereof to the holder of this certificate upon
          written request and without charge."

Acquiror, at its discretion, may cause stop transfer orders to be placed with
its transfer agent(s) with respect to the certificates for the Acquiror Shares
but not as to the certificates for any part of the Acquiror Shares as to which
said legend is no longer appropriate as hereinabove provided.

     (2) Notwithstanding paragraph (g)(1) of this Section 1, at any time after
the financial results described in paragraph (c) of this Section 1 have been
filed or published as described therein, any or all certificates representing
the Acquiror Shares shall, at the written request of such Stockholder and upon
surrender of such certificates to the transfer agent for Acquiror Shares, be
replaced by stock certificates representing the Acquiror Shares bearing only the
following legend:
<PAGE>
 
          "The shares represented by this certificate may not be offered, sold,
          pledged, transferred or otherwise disposed of except in compliance
          with paragraph (d) of Rule 145 promulgated by the Securities and
          Exchange Commission."

The reference in the foregoing legend to Rule 145 shall not preclude, however,
the alternative of a transaction in compliance with subparagraphs (ii), (iii) or
(iv) of paragraph (f) of this Section 1. Acquiror shall, or shall cause its
counsel to, promptly deliver to Acquiror's transfer agent customary letters or
opinion letters necessary to authorize such transfer agent to deliver
certificates without restrictive legend to a purchaser of Acquiror Shares sold
by a Stockholder in compliance with Rule 144 and Rule 145 upon receipt of
written request from a Stockholder of such sale(s).

          (h) Each Stockholder will observe and comply with the Securities Act
and the General Rules and Regulations thereunder, as now in effect and as from
time to time amended and including those hereafter enacted or promulgated, in
connection with any offer, sale, pledge or transfer or other disposition of the
Acquiror Shares or any part thereof.

     2.   Acquiror covenants and agrees with each of the Stockholders as
follows:

          (a) As soon as practicable following the expiration of the first full
calendar month that commences after the Effective Time of the Merger (but in any
event no later than the end of the fourteenth day following the expiration of
the first full calendar month commencing after the Effective Time of the
Merger), the Acquiror will file a Current Report on Form 8-K which includes
combined sales and net income of the Company and the Acquiror.

          (b) As soon as practicable after the financial results described in
paragraph (c) of Section 1 have been filed as described in paragraph (a) of this
Section 2, the Acquiror, at its expense, shall file a Form S-3 registration
statement registering for public sale the Acquiror Shares acquired in the Merger
by the Stockholders and the Acquiror Shares issuable upon exercise of the Series
C Preferred Stock Warrants, as that term is defined in the Merger Agreement, and
shall use its best efforts to cause such registration to become effective within
forty-five (45) days after the filing of the financial results described in
paragraph (c) of Section 1 as described in paragraph (a) of this Section 2, and
to remain effective for a period of not less than three years (unless prior to
the expiration of such three year period, all of the Series C Preferred Stock
Warrants are exercised, in which case the registration statement shall not be
required to remain effective so long as one year has elapsed from the date of
the filing of such registration statement); provided, however, that at such time
that none of the Series C Preferred Warrants remain outstanding, Acquiror shall
not be obligated to maintain the effectiveness of any registration statement
filed pursuant to this paragraph 2 if either (i) the combined holdings of
Acquiror Shares held by the Stockholders represent less than 2% of the total
issued and outstanding Acquiror Shares, or (ii) if the volume restrictions under
Rule 145 would not materially impair the ability of the Stockholders to sell
such shares in the public market in reliance upon Rule 145 during a period not
exceeding thirty (30) days.  The Acquiror and the Stockholders shall in good
faith negotiate a mutually acceptable agreement governing the registration
rights herein granted prior to the Effective Time, containing terms and
conditions customary for contractual shelf registrations such as this, and
taking into account customary shelf registration procedures, covenants and
indemnities, but excluding any required registrations other than as contained in
this Section and 
<PAGE>
 
excluding piggyback registrations. Pending the occurrence of the Effective Time,
the Stockholders agree not to assert any claims against the Company for
liquidated damages under Section 6 of that Registration Rights Agreement, dated
as of October 24, 1996 among the Company and the Stockholders (the "Registration
Rights Agreement"), and at the Effective Time, the Registration Rights Agreement
shall terminate and be of no further force or effect and neither the Company nor
the Acquiror shall be liable for liquidated or other damages thereunder, all of
which claims shall be waived as of the Effective Time; provided, if the Merger
Agreement shall be terminated, the Registration Rights Agreement shall continue
in full force and effect and thereafter the Stockholders may assert such claims
for liquidated damages as may be permitted by such Registration Rights
Agreement.

     3.   The Company covenants and agrees with each of the Stockholders that if
the Merger Agreement is terminated for any reason whatsoever, it will pay to the
Stockholders a flat expense reimbursement fee of $400,000 (allocated among the
Stockholders in such manner as directed by the Stockholders in writing to the
Company), payable at the sole discretion of the Company in either cash or common
stock of the Company (in the case of common stock of the Company, based on the
average closing sale price of the Company's common stock as reported by
Bloomberg LP on the NASDAQ Stock Market for the five business days preceding the
date that such fee shall become due); provided, however, if the Merger, as
defined in the Merger Agreement, is consummated, no fee shall be due or owing to
the Stockholders by the Company.  The Stockholders confirm that Acquiror shall
have no liability or obligation whatsoever with respect to such fee, and that
there are no other fees or payments that are or will become due to the
Stockholders from the Company or Acquiror in connection with or relating to the
Stockholders' execution, delivery and performance of this Agreement.  The
Company further agrees that (unless the fee set forth above has otherwise been
paid upon a prior termination of the Merger Agreement) upon the occurrence of
the Expiration Date, it will deposit the $400,000 fee into an escrow account
with an escrow depository reasonably acceptable to the Stockholders to be held
by the escrow depository and disbursed to (i) the Stockholders if the Merger
Agreement is terminated or (ii) to the Company upon occurrence of the Effective
Time.  The expense of such escrow shall be paid by the Company.

     4.   From and after the Effective Time of the Merger and for so long as
necessary in order to permit the Stockholders to sell the Acquiror Shares
pursuant to Rule 145 and, to the extent applicable, Rule 144 under the
Securities Act, Acquiror will use its best efforts to file on a timely basis all
reports required to be filed by it pursuant to Section 13 of the Securities
Exchange Act of 1934, referred to in paragraph (c)(1) of Rule 144 under the
Securities Act (or, if applicable, Acquiror will use its best efforts to make
publicly available the information regarding itself referred to in paragraph
(c)(2) of Rule 144) in order to permit the Stockholders to sell, pursuant to the
terms and conditions of Rule 145 and the applicable provisions of Rule 144, the
Acquiror Shares.

     5.   Each of the Stockholders severally agrees that it will not perfect any
dissenter's appraisal rights under the Delaware General Corporation Law.

     6.   The provisions of this Agreement may be terminated from and after the
Expiration Date (as hereinafter defined) by written notice given by the
Stockholders to Acquiror and the Company if the Effective Time of the Merger
shall not have occurred on or prior to the Expiration Date; provided, however if
the Effective Time shall have occurred on or prior to the Expiration Date, 
<PAGE>
 
then this Agreement shall continue in full force and effect notwithstanding any
such notice given by the Stockholders. As used herein, the term "Expiration
Date" shall mean June 30, 1997; provided, however, if the Effective Time shall
not have occurred on or prior to June 30, 1997 due to any action or inaction of
any Governmental Entity (as defined in the Merger Agreement) [including, but not
limited to, the failure of the Commission to declare the Acquiror's Registration
Statement on Form S-4 relating to the Merger effective (as long as the initial
filing of such Registration Statement shall be made by March 31, 1997) or the
failure of the applicable waiting period under the Hart-Scott-Rodino Antitrust
Improvements Act of 1976, as amended, to be terminated (so long as the initial
filing thereof shall be made by March 31, 1997)], the Expiration Date shall
automatically be extended to such later date as is necessary to permit the
Effective Time to occur prior to the occurrence of the Expiration Date (which
extension shall include sufficient time to permit the occurrence of the special
meetings of the stockholders of the Acquiror and the Company as contemplated by
the Merger Agreement), in which case this Agreement shall continue in full force
and effect; provided further, that if the Effective Time shall not have occurred
by September 30, 1997, then this Agreement may thereafter be terminated upon
written notice by the Stockholders to the Acquiror and the Company, whereupon
delivery of such notice this Agreement shall be of no further force or effect,
notwithstanding anything herein to the contrary.

     7.   Each Stockholder represents that it knows of no plan (written or oral)
pursuant to which the stockholders of the Company intend to sell or otherwise
dispose of any Acquiror Shares to be received by them pursuant to the Merger
Agreement which would reduce the holdings of such Acquiror Shares to an amount
having in the aggregate a value at the time of the Merger of less than 50% of
all Common Stock of the Company outstanding prior to the Merger.

     8.   No waiver by any party hereto of any condition or of any breach of any
provision of this Agreement shall be effective unless in writing.

     9.   All notices, requests, demands or other communications which are
required or may be given pursuant to the terms of this Agreement shall be in
writing and shall be deemed to have been duly given if delivered by hand or
(except where receipt thereof is specifically required for purposes of this
Agreement) mailed by registered or certified mail, postage prepaid, as follows:

     If to a Stockholder, at the address set forth below such Stockholder's
signature at the end hereof.

     If to Acquiror:

     To:                            Copies to:
 
     VTEL Corporation               Jenkens & Gilchrist
     108 Wild Basin Road            1445 Ross Avenue, Suite 3200
     Austin, Texas 78746            Dallas, Texas  75202
                                    Attn:  L. Steven Leshin, Esq.
<PAGE>
 
     If to the Company:
 
     To:                               Copies to:
 
     Compression Labs, Incorporated    Shearman & Sterling
     350 East Plumeria Drive           555 California Street
     San Jose, CA 85134                San Francisco, CA 94104
                                       Attn: Michael J. Kennedy

or to such other address as any party hereto or any Stockholder may designate
for itself by notice given as herein provided

     10.  For the convenience of the parties hereto this Agreement may be
executed by facsimile and in one or more counterparts, each of which shall be
deemed an original, but all of which together shall constitute one and the same
document.  This Agreement shall be enforceable by, and shall inure to the
benefit of and be binding upon, the parties hereto and their respective
successors and assigns.

     11.  This Agreement shall be governed by and construed, interpreted and
enforced in accordance with the laws of the State of Delaware.

     12.  If a court of competent jurisdiction determines that any provision of
this Agreement is unenforceable or enforceable only if limited in time and/or
scope, this Agreement shall continue in full force and effect with such
provision stricken or so limited.

     IN WITNESS WHEREOF, the parties have caused this Agreement to be executed
as of the date first above written.

                              Stockholders:

                              INFINITY INVESTORS LIMITED

                              By:   HW Finance Partners, L.P.,
                                    Investment Advisor

                                    By:  HW Finance, L.L.C.,
                                         its General Partner

                                         By:  /s/ Clark K. Hunt
                                              -------------------------------
                                              Clark K. Hunt, Vice President
                                              and a Manager

                              27 Wellington Road
                              Cork, Ireland

                                    With copies to:
                                    HW Finance Partners, L.P.
                                    4000 Thanksgiving Tower
                                    1601 Elm Street
                                    Dallas, Texas  75201

                                    and

                                    Victor Zanetti, Esq.
                                    Arter & Hadden
                                    1717 Main Street, Suite 4100
                                    Dallas, Texas  75201
<PAGE>
 
                              SEACREST CAPITAL LIMITED

                              By:   Sandera Capital Management, L.P.,
                                    Investment Advisor

                                    By:  Sandera Capital, L.L.C.,
                                         its General Partner


                                         By:  /s/ Clark K. Hunt
                                              -------------------------------
                                              Clark K. Hunt, Vice President
                                              and a Manager

                              27 Wellington Road
                              Cork, Ireland

                                    With copies to:
                                    HW Finance Partners, L.P.
                                    4000 Thanksgiving Tower
                                    1601 Elm Street
                                    Dallas, Texas  75201

                                    and

                                    Victor Zanetti, Esq.
                                    Arter & Hadden
                                    1717 Main Street, Suite 4100
                                    Dallas, Texas  75201


                              Accepted and agreed to as of
                              ______________, 1997.

                              Acquiror:


                              VTEL CORPORATION

                              By:   /s/ Rodney S. Bond
                                    -----------------------------------------
                                    Rodney S. Bond, Vice President

                              The Company:

                              COMPRESSION LABS, INCORPORATED

                              By:   /s/ Gary Trimm
                                    -----------------------------------------
                              Name:
                                    -----------------------------------------
                              Title:
                                    -----------------------------------------

<PAGE>
 
                                                                     EXHIBIT 5.1
                       [JENKENS & GILCHRIST LETTERHEAD]

                               September 8, 1997



VTEL Corporation
108 Wild Basin Road
Austin, Texas 78746

     Re:  Offering of Common Stock of VTEL Corporation on Form S-3

Gentlemen:

     We have acted as counsel to VTEL Corporation, a Delaware corporation (the
"Company"), in connection with the preparation of a Registration Statement on
Form S-3 (the "Registration Statement") to be filed with the Securities and
Exchange Commission (the "Commission") on or about September 8, 1997, under the
Securities Act of 1933, as amended (the "Act").  Such Registration Statement
relates to the sale by certain stockholders of the Company of 2,879,829 shares
("Shares") of the Company's common stock, par value $.01 per share (the "Common
Stock").

     You have requested the opinion of this firm with respect to certain legal
aspects of the proposed offering.  In connection therewith, we have examined and
relied upon the original or copies, certified to our satisfaction, of (i) the
Fourth Amended and Restated Certificate of Incorporation, as amended, and the
bylaws of the Company, as amended, (ii) copies of resolutions of the Board of
Directors of the Company authorizing the issuance of the Shares, the preparation
and filing of the Registration Statement and related matters, (iii) the
Registration Statement, and all exhibits thereto, and (iv) such other documents
and instruments as we have deemed necessary for the expression of the opinions
herein contained.  In making the foregoing examinations, we have assumed the
genuineness of all signatures and the authenticity of all documents submitted to
us as originals, and the conformity to original documents of all documents
submitted to us as certified or photostatic copies.  As to various questions of
fact material to this opinion, we have relied, to the extent we have deemed
reasonably appropriate, upon representations or certificates of officers or
directors of the Company and upon documents, records and instruments furnished
to us by the Company, without independent check or verification of their
accuracy.

     Based upon the foregoing examination, we are of the opinion that the Shares
to be sold, as described in the Registration Statement, have been duly and
validly authorized for issuance and the Shares that are presently outstanding
are validly issued, fully paid and nonassessable, and the Shares issuable upon
exercise of the Warrants, as described in the Prospectus, when issued and
delivered in the manner and for the consideration stated in each Warrant, will
be validly issued, fully paid and non-assessable, assuming (i) the Company
maintains an adequate number of authorized but unissued shares and/or treasury
shares available for issuance to those persons holding the Warrants, and (ii)
the consideration received exceeds the par value of such shares.
<PAGE>
 
     We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and the use of our name under the caption "Legal Matters"
in the Prospectus forming part of the Registration Statement.  In giving such
consent, we do not admit that we come within the category of persons whose
consent is required by Section 7 of the Act or the rules and regulations of the
Commission thereunder.

                              Respectfully submitted,

                              Jenkens & Gilchrist
                              a Professional Corporation


                              By:   /s/ L. Steven Leshin
                                    ----------------------------------------
                                    L. Steven Leshin, Authorized Signatory

<PAGE>
 
                                                                    EXHIBIT 23.1

                      CONSENT OF INDEPENDENT ACCOUNTANTS

     We hereby consent to the incorporation by reference in the Prospectus
constituting part of this Registration Statement on Form S-3 of our report dated
October 10, 1996, relating to the consolidated financial statements of VTEL
Corporation as of December 31, 1994 and 1995 and July 31, 1996 and for each of
the three years in the period ended December 31, 1995 and the seven months ended
July 31, 1996, which appears in VTEL Corporation's Annual Report on Form 10-K
for the transition period from January 1, 1996 through July 31, 1996 (the "Form
10-K"). We also consent to the application of such report to the Financial
Statement Schedules for each of the three years in the period ended December 31,
1995 and the seven months ended July 31, 1996 listed under Item 8 of the Form
10-K when such schedules are read in conjunction with the consolidated financial
statements referred to in our report.  We also consent to the references to us
under the headings "Experts" and "Selected Financial Data" in such Prospectus.
However, it should be noted that Price Waterhouse LLP has not prepared or
certified such "Selected Financial Data."


PRICE WATERHOUSE LLP
Austin, Texas
September 2, 1997

<PAGE>
 
                                                                    EXHIBIT 23.2

                          CONSENT INDEPENDENT AUDITORS

     We hereby consent to the use of our reports relating to Compression Labs,
Incorporated, which reports are included herein, or are incorporated by
reference in the Prospectus.  We also consent to the reference to our firm under
the heading "Experts" in the Prospectus.

                                         KPMG PEAT MARWICK LLP

San Jose, California
September 5, 1997


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