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                                                                     EXHIBIT 4.9

         THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE BEEN ACQUIRED FOR
INVESTMENT. THIS WARRANT HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF
1933, AS AMENDED, OR THE SECURITIES LAWS OF ANY STATE AND MAY NOT BE SOLD,
TRANSFERRED OR OTHERWISE DISPOSED OF EXCEPT PURSUANT TO AN EFFECTIVE
REGISTRATION STATEMENT OR EXEMPTION FROM REGISTRATION UNDER THE FOREGOING LAWS.

THIS WARRANT SHALL BE VOID AFTER 5:00 P.M. EASTERN TIME ON APRIL 13, 2008 (THE
"EXPIRATION DATE").

No. CSW-17

                       FIRST VIRTUAL COMMUNICATIONS, INC.

                      WARRANT TO PURCHASE 300,000 SHARES OF
                    COMMON STOCK, PAR VALUE $0.001 PER SHARE

                  FOR VALUE RECEIVED, Ralph Ungermann ("Warrantholder"), is
entitled to purchase, subject to the provisions of this Warrant, from First
Virtual Communications, Inc., a Delaware corporation ("Company"), at any time
after April 13, 2003 and not later than 5:00 P.M., Eastern time, on the
Expiration Date (as defined above), at an exercise price per share equal to
$0.38, which is 125% of the average closing bid prices per share of the
Company's Common Stock, as reported on The Nasdaq SmallCap Market, during the
period of five (5) days prior to the "Effective Date" of the Private Equity Line
Financing Agreement (the "Equity Line Agreement"), executed by Warrantholder and
Company and dated April 14, 2003 (the exercise price per share in effect being
herein called the "Warrant Price"), 300,000 shares ("Warrant Shares") of the
Company's Common Stock, par value $0.001 per share ("Common Stock"). The number
of Warrant Shares purchasable upon exercise of this Warrant and the Warrant
Price shall be subject to adjustment from time to time as described herein.

         SECTION 1.        Registration. The Company shall maintain books for
the transfer and registration of the Warrant. Upon the initial issuance of this
Warrant, the Company shall issue and register the Warrant in the name of the
Warrantholder.

         SECTION 2.        Transfers. As provided herein, this Warrant may be
transferred only pursuant to a registration statement filed under the Securities
Act of 1933, as amended ("Securities Act"), or an exemption from such
registration. Subject to such restrictions, the Company shall transfer this
Warrant from time to time upon the books to be maintained by the Company for
that purpose, upon surrender thereof for transfer properly endorsed or
accompanied by appropriate instructions for transfer and such other documents as
may be reasonably required by the Company, including, if required by the
Company, an opinion of its counsel to the effect that such transfer is exempt
from the registration requirements of the Securities Act of 1933, to

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establish that such transfer is being made in accordance with the terms hereof,
and a new Warrant shall be issued to the transferee and the surrendered Warrant
shall be canceled by the Company.

         SECTION 3.        Exercise of Warrant. Subject to the provisions
hereof, the Warrantholder may exercise this Warrant in whole or in part at any
time upon surrender of the Warrant, together with delivery of the duly executed
Warrant exercise form attached hereto as Appendix A (the "Exercise Agreement")
and payment by cash, certified check or wire transfer of funds for the aggregate
Warrant Price for that number of Warrant Shares then being purchased, to the
Company during normal business hours on any business day at the Company's
principal executive offices (or such other office or agency of the Company as it
may designate by notice to the holder hereof). The Warrant Shares so purchased
shall be deemed to be issued to the holder hereof or such holder's designee, as
the record owner of such shares, as of the close of business on the date on
which this Warrant shall have been surrendered (or evidence of loss, theft or
destruction thereof and security or indemnity satisfactory to the Company), the
Warrant Price shall have been paid and the completed Exercise Agreement shall
have been delivered. Certificates for the Warrant Shares so purchased,
representing the aggregate number of shares specified in the Exercise Agreement,
shall be delivered to the holder hereof within a reasonable time, not exceeding
three (3) business days, after this Warrant shall have been so exercised. The
certificates so delivered shall be in such denominations as may be requested by
the holder hereof and shall be registered in the name of such holder or such
other name as shall be designated by such holder. If this Warrant shall have
been exercised only in part, then, unless this Warrant has expired, the Company
shall, at its expense, at the time of delivery of such certificates, deliver to
the holder a new Warrant representing the number of shares with respect to which
this Warrant shall not then have been exercised. As used herein, "business day"
means a day, other than a Saturday or Sunday, on which banks in New York City
are open for the general transaction of business. Each exercise hereof shall
constitute the re-affirmation by the Warrantholder that the representations and
warranties with respect to the Warrant Shares contained in Section 4 below are
true and correct in all respects with respect to the Warrantholder as of the
time of such exercise.

         SECTION 4.        Compliance with the Securities Act of 1933;
Investment Representations.

                  (a)      The Company may cause the legend set forth on the
first page of this Warrant to be set forth on each Warrant or similar legend on
any security issued or issuable upon exercise of this Warrant, unless counsel
for the Company is of the opinion as to any such security that such legend is
unnecessary.

                  (b)      The Investor understands that: (i) the offering and
sale of this Warrant and the Warrant Shares purchasable upon exercise of this
Warrant is intended to be exempt from the registration requirements of the
Securities Act; (ii) the offer and sale of this Warrant and the Warrant Shares
purchasable upon exercise of this Warrant has not been registered under the
Securities Act or any other applicable securities laws and such securities may
be resold only if registered under the Securities Act and any other applicable
securities laws or if an exemption from such registration requirements is
available; and (iii) the Company is not required to register any resale of this
Warrants or the Warrant Shares under the Securities Act or any other applicable
securities laws.

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                  (c)      The Investor represents that the Warrant and the
Warrant Shares purchasable upon exercise of this Warrant are being acquired for
his own account and not with a view to, or for sale in connection with, any
distribution thereof in violation of the Securities Act or any other securities
laws that may be applicable.

                  (d)      The Investor represents that the Investor (i) is an
"accredited investor" as that term is defined in Rule 501(a) of Regulation D
under the Securities Act, (ii) has sufficient knowledge and experience in
financial and business matters so as to be capable of evaluating the merits and
risks of his acquisition of the Warrant and investment in the Warrant Shares and
is capable of bearing the economic risks of such investment, including a
complete loss of his investment in any Warrant Shares purchasable upon exercise
of this Warrant; (iii) believes that his acquisition of the Warrant and
investment in the Warrant Shares purchasable upon exercise of this Warrant is
suitable for him based upon his objectives and financial needs, and the Investor
has adequate means for providing for his current financial needs and business
contingencies and has no present need for liquidity of any investment with
respect to this Warrant or any Warrant Shares purchasable upon exercise of this
Warrant; and (iv) has not purchased, sold or entered into any put option, short
position or similar arrangement with respect to any Warrant Shares purchasable
upon exercise of this Warrant.

                  (e)      The Investor acknowledges that no oral or written
statements or representations have been made to the Investor by or on behalf of
the Company in connection with the offering and sale of this Warrant or any
Warrant Shares purchasable upon exercise of this Warrant other than those set
forth in the Company's Annual Report on Form 10-K for the year-ended December
31, 2002, the Company's definitive proxy statement, filed April 12, 2002, and
the Company's other reports and documents filed under Sections 13(a), 13(c), 14
or 15(d) under the Securities Exchange Act of 1934, as amended, or as set forth
herein.

                  (f)      The Investor acknowledges that the Securities Act and
state securities laws restrict the transferability of securities, such as the
Warrant Shares, issued in reliance upon the exemption from the registration
requirements of the Securities Act provided by Section 4(2) thereunder and
applicable state securities laws, and that, unless registered under the
Securities Act or an exemption from registration is available, the Warrant
Shares purchasable upon exercise of this Warrant must be held indefinitely.

                  (g)      The Investor has been furnished with all materials
relating to the business, finances and operations of the Company and materials
relating to the issuance of this Warrant and the Warrant Shares purchasable upon
exercise of this Warrant which have been requested by the Investor. The Investor
has been afforded the opportunity to ask questions of the Company. The Investor
understands that its investment in the Warrant and any Warrant Shares
purchasable upon exercise of this Warrant involves a significant degree of risk.

                  (h)      The Investor shall make all filings with the
Commission required under the Exchange Act, including reports required under
Regulation 13D-G and Section 16 thereunder, within the time periods required
under the Exchange Act, in connection with any purchase of Warrant Shares upon
exercise of this Warrant.

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         SECTION 5.        Payment of Taxes. The Company will pay any
documentary stamp taxes attributable to the initial issuance of Warrant Shares
issuable upon the exercise of the Warrant; provided, however, that the Company
shall not be required to pay any tax or taxes which may be payable in respect of
any transfer involved in the issuance or delivery of any certificates for
Warrant Shares in a name other than that of the registered holder of this
Warrant in respect of which such shares are issued, and in such case, the
Company shall not be required to issue or deliver any certificate for Warrant
Shares or any Warrant until the person requesting the same has paid to the
Company the amount of such tax or has established to the Company's reasonable
satisfaction that such tax has been paid. The holder shall be responsible for
income taxes due under federal, state or other law, if any such tax is due.

         SECTION 6.        Mutilated or Missing Warrants. In case this Warrant
shall be mutilated, lost, stolen, or destroyed, the Company shall issue in
exchange and substitution of and upon cancellation of the mutilated Warrant, or
in lieu of and substitution for the Warrant lost, stolen or destroyed, a new
Warrant of like tenor and for the purchase of a like number of Warrant Shares,
but only upon receipt of evidence reasonably satisfactory to the Company of such
loss, theft or destruction of the Warrant, and with respect to a lost, stolen or
destroyed Warrant, reasonable indemnity or bond with respect thereto, if
requested by the Company.

         SECTION 7.        Reservation of Common Stock. The Company hereby
represents and warrants that there have been reserved, and the Company shall at
all applicable times keep reserved until issued (if necessary) as contemplated
by this Section 7, out of the authorized and unissued shares of Common Stock,
sufficient shares to provide for the exercise of the rights of purchase
represented by this Warrant. The Company agrees that all Warrant Shares issued
upon due exercise of the Warrant shall be, at the time of delivery of the
certificates for such Warrant Shares, duly authorized, validly issued, fully
paid and non-assessable shares of Common Stock of the Company.

         SECTION 8.        Adjustments. Subject and pursuant to the provisions
of this Section 8, the Warrant Price and number of Warrant Shares subject to
this Warrant shall be subject to adjustment from time to time as set forth
hereinafter.

                  (a)      If the Company shall, at any time or from time to
time while this Warrant is outstanding, pay a dividend or make a distribution on
its Common Stock in shares of Common Stock, subdivide its outstanding shares of
Common Stock into a greater number of shares or combine its outstanding shares
of Common Stock into a smaller number of shares or issue by reclassification of
its outstanding shares of Common Stock any shares of its capital stock
(including any such reclassification in connection with a consolidation or
merger in which the Company is the continuing corporation), then the number of
Warrant Shares purchasable upon exercise of the Warrant and the Warrant Price in
effect immediately prior to the date upon which such change shall become
effective, shall be adjusted by the Company so that the Warrantholder thereafter
exercising the Warrant shall be entitled to receive the number of shares of
Common Stock or other capital stock which the Warrantholder would have received
if the Warrant had been exercised immediately prior to such event upon payment
of a Warrant Price that has been adjusted to reflect a fair allocation of the
economics of such event to the Warrantholder. Such adjustments shall be made
successively whenever any event listed above shall occur.

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                  (b)      If any capital reorganization, reclassification of
the capital stock of the Company, consolidation or merger of the Company with
another corporation in which the Company is not the survivor, or sale, transfer
or other disposition of all or substantially all of the Company's assets to
another corporation shall be effected, then, as a condition of such
reorganization, reclassification, consolidation, merger, sale, transfer or other
disposition, lawful and adequate provision shall be made whereby Warrantholder
shall thereafter have the right to purchase and receive upon the basis and upon
the terms and conditions herein specified and in lieu of the Warrant Shares
immediately theretofore issuable upon exercise of this Warrant, such shares of
stock, securities or assets as would have been issuable or payable with respect
to or in exchange for a number of Warrant Shares equal to the number of Warrant
Shares immediately theretofore issuable upon exercise of this Warrant, had such
reorganization, reclassification, consolidation, merger, sale, transfer or other
disposition not taken place, and in any such case appropriate provision shall be
made with respect to the rights and interests of Warrantholder to the end that
the provisions hereof shall thereafter be applicable, as nearly equivalent as
may be practicable in relation to any shares of stock, securities or properties
thereafter deliverable upon the exercise thereof. The Company shall not effect
any such consolidation, merger, sale, transfer or other disposition unless prior
to or simultaneously with the consummation thereof the successor corporation (if
other than the Company) resulting from such consolidation or merger, or the
corporation purchasing or otherwise acquiring such assets or other appropriate
corporation or entity shall assume the obligation to deliver to the holder of
this Warrant, at the last address of such holder appearing on the books of the
Company, such shares of stock, securities or assets as, in accordance with the
foregoing provisions, such holder may be entitled to purchase. The provisions of
this paragraph (b) shall similarly apply to successive reorganizations,
reclassifications, consolidations, mergers, sales, transfers or other
dispositions.

         SECTION 9.        Fractional Interest. The Company shall not be
required to issue fractions of Warrant Shares upon the exercise of this Warrant.
If any fractional share of Common Stock would, except for the provisions of the
first sentence of this Section 9, be deliverable upon such exercise, the
Company, in lieu of delivering such fractional share, shall pay to the
exercising holder of this Warrant an amount in cash equal to the Fair Market
Value of such fractional share of Common Stock on the date of exercise. As used
in this Warrant, "Fair Market Value" of a share of Common Stock as of a
particular date (the "Valuation Date") shall mean the following: (a) if the
Common Stock is then listed on a national stock exchange, the closing sale price
of one share of Common Stock on such exchange on the last trading day prior to
the Valuation Date; (b) if the Common Stock is then quoted on Nasdaq, the
closing sale price of one share of Common Stock on Nasdaq on the last trading
day prior to the Valuation Date or, if no such closing sale price is available,
the average of the high bid and the low sales price quoted on Nasdaq on the last
trading day prior to the Valuation Date; or (c) if the Common Stock is not then
listed on a national stock exchange or quoted on Nasdaq, the Fair Market Value
of one share of Common Stock as of the Valuation Date, shall be determined in
good faith by the Board of Directors of the Company.

         SECTION 10.       Notices to Warrantholder. Upon the happening of any
event requiring an adjustment of the Warrant Price, the Company shall promptly
give written notice thereof to the Warrantholder at the address appearing in the
records of the Company, stating the adjusted

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Warrant Price and the adjusted number of Warrant Shares resulting from such
event and setting forth in reasonable detail the method of calculation and the
facts upon which such calculation is based. Failure to give such notice to the
Warrantholder or any defect therein shall not affect the legality or validity of
the subject adjustment.

         SECTION 11.       Identity of Transfer Agent. The Transfer Agent for
the Common Stock is Computer Share Trust Company. Upon the appointment of any
subsequent transfer agent for the Common Stock or other shares of the Company's
capital stock issuable upon the exercise of the rights of purchase represented
by the Warrant, the Company will mail to the Warrantholder a statement setting
forth the name and address of such transfer agent.

         SECTION 12.       Notices. Unless otherwise provided, any notice
required or permitted under this Warrant shall be given in writing and shall be
deemed effectively given as hereinafter described (i) if given by personal
delivery, then such notice shall be deemed given upon such delivery, (ii) if
given by telex or telecopier, then such notice shall be deemed given upon
receipt of confirmation of complete transmittal, (iii) if given by mail, then
such notice shall be deemed given upon the earlier of (A) receipt of such notice
by the recipient or (B) three days after such notice is deposited in first class
mail, postage prepaid, and (iv) if given by an internationally recognized
overnight air courier, then such notice shall be deemed given one day after
delivery to such carrier. All notices shall be addressed as follows: if to the
Warrantholder, at its address as set forth in the Company's books and records
and, if to the Company, at the address as follows, or at such other address as
the Warrantholder or the Company may designate by ten days' advance written
notice to the other:

                           If to the Company:

                                    First Virtual Communications, Inc.
                                    3393 Octavius Drive
                                    Santa Clara, California 95054
                                    Attention: Chief Financial Officer
                                    Fax: (408) 748-2241

                           With a copy to:

                                    Cooley Godward LLP
                                    4401 Eastgate Mall
                                    San Diego, California 92121-1909
                                    Attention: Julie M. Robinson, Esq.
                                    Fax: (858) 550-6420

         SECTION 13.       Successors. All the covenants and provisions hereof
by or for the benefit of the Warrantholder shall bind and inure to the benefit
of its respective successors and assigns hereunder.

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         SECTION 14.       Governing Law. This Warrant shall be governed by, and
construed in accordance with, the internal laws of the State of California,
without reference to the choice of law provisions thereof. The Company and, by
accepting this Warrant, the Warrantholder, each irrevocably submits to the
exclusive jurisdiction of the courts of the State of California located in
Northern California and the United States District Court for the Northern
District of California for the purpose of any suit, action, proceeding or
judgment relating to or arising out of this Warrant and the transactions
contemplated hereby. Service of process in connection with any such suit, action
or proceeding may be served on each party hereto anywhere in the world by the
same methods as are specified for the giving of notices under this Warrant. The
Company and, by accepting this Warrant, the Warrantholder, each irrevocably
consents to the jurisdiction of any such court in any such suit, action or
proceeding and to the laying of venue in such court. The Company and, by
accepting this Warrant, the Warrantholder, each irrevocably waives any objection
to the laying of venue of any such suit, action or proceeding brought in such
courts and irrevocably waives any claim that any such suit, action or proceeding
brought in any such court has been brought in an inconvenient forum.

         SECTION 15.       No Rights as Stockholder. Prior to the exercise of
this Warrant, the Warrantholder shall not have or exercise any rights as a
stockholder of the Company by virtue of its ownership of this Warrant.

         SECTION 16.       Amendment; Waiver. This Warrant may be amended or
waived (including the adjustment provisions included in Section 8 of this
Warrant) upon the written consent of the Company and the Warrantholder Section
Headings. The section heading in this Warrant are for the convenience of the
Company and the Warrantholder and in no way alter, modify, amend, limit or
restrict the provisions hereof.

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         IN WITNESS WHEREOF, the Company has caused this Warrant to be duly
executed, as of the 14th day of April, 2003.

                                        FIRST VIRTUAL COMMUNICATIONS, INC.

                                        By:______________________________

                                        Name:____________________________

                                        Title:___________________________

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                                   APPENDIX A
                       FIRST VIRTUAL COMMUNICATIONS, INC.
                              WARRANT EXERCISE FORM

To: First Virtual Communications, Inc.

         The undersigned hereby irrevocably elects to exercise the right of
purchase represented by the within Warrant ("Warrant") for, and to purchase
thereunder by the payment of the Warrant Price and surrender of the Warrant,
_______________ shares of Common Stock ("Warrant Shares") provided for therein,
and requests that certificates for the Warrant Shares be issued as follows:

                           ______________________________
                           Name

                           ______________________________
                           Address

                           ______________________________

                           ______________________________
                           Federal Tax ID or Social Security No.

         and delivered by        (certified mail to the above address, or
                                 (electronically (provide DWAC
Instructions:___________________), or
                        (other (specify):
 _____________________________________________).

and, if the number of Warrant Shares shall not be all the Warrant Shares
purchasable upon exercise of the Warrant, that a new Warrant for the balance of
the Warrant Shares purchasable upon exercise of this Warrant be registered in
the name of the undersigned Warrantholder or the undersigned's Assignee as below
indicated and delivered to the address stated below.

Dated: ___________________, ____

Note: The signature must correspond with
      Signature:____________________________
the name of the registered holder as written
on the first page of the Warrant in every         ______________________________
particular, without alteration or enlargement     Name (please print)
or any change whatever, unless the Warrant
has been assigned.                                ______________________________

                                                  ______________________________
                                                  Address

                                                  ______________________________
                                                  Federal Identification or

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                                                  Social Security No.

                                                  Assignee:
                                                  ______________________________
                                                  ______________________________
                                                  ______________________________

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                                                                    EXHIBIT 4.10

THIS WARRANT AND THE SHARES ISSUABLE HEREUNDER HAVE NOT BEEN REGISTERED UNDER
THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"), OR THE SECURITIES LAWS OF
ANY STATE AND, EXCEPT AND PURSUANT TO THE PROVISIONS OF ARTICLE 5 BELOW, MAY NOT
BE OFFERED, SOLD OR OTHERWISE TRANSFERRED, PLEDGED OR HYPOTHECATED UNLESS AND
UNTIL REGISTERED UNDER SAID ACT AND APPLICABLE STATE SECURITIES LAW OR PURSUANT
TO RULE 144 OR, IN THE OPINION OF LEGAL COUNSEL IN FORM AND SUBSTANCE
SATISFACTORY TO THE ISSUER OF THESE SECURITIES, SUCH OFFER, SALE OR TRANSFER,
PLEDGE OR HYPOTHECATION IS EXEMPT FROM REGISTRATION.

                                         WARRANT TO PURCHASE STOCK

Company:                   FIRST VIRTUAL COMMUNICATIONS, INC., a Delaware
                           corporation

Number of Shares:          the Designated Number (as defined below), subject to
                           adjustment as provided herein

Class of Stock:            Common

Warrant Price:             the Designated Price (as defined below) per share,
                           subject to adjustment as provided herein

Issue Date:                April 3, 2003

Expiration Date:           April 2, 2008

         THIS WARRANT CERTIFIES THAT, for the agreed upon value of $1.00 and for
other good and valuable consideration, SILICON VALLEY BANK ("Holder") is
entitled to purchase the number of fully paid and nonassessable shares of the
class of securities (the "Shares") of the Company at the Warrant Price, all as
set forth above and as adjusted pursuant to Article 2 of this Warrant, subject
to the provisions and upon the terms and conditions set forth in this Warrant.
As used herein, the term "Designated Price" means the average per share closing
price of the Shares reported during the 30-trading-day period immediately before
the Issue Date, which average closing price equals $0.32. As used herein, the
term "Designated Number" means the quotient obtained from dividing (a) $90,000
by (b) the Designated Price.

ARTICLE 1. EXERCISE.

                  1.1      Method of Exercise. Holder may exercise this Warrant
by delivering a duly executed Notice of Exercise in substantially the form
attached as Appendix 1 to the principal office of the Company. Unless Holder is
exercising the conversion right set forth in Article 1.2, Holder shall also
deliver to the Company a check, wire transfer (to an account designated by the
Company), or other from of payment acceptable to the Company for the aggregate
Warrant Price for the Shares being purchased.

                  1.2      Conversion Right. In lieu of exercising this Warrant
as specified in Article 1.1, Holder may from time to time convert this Warrant,
in whole or in part, into a number of Shares determined by dividing (a) the
aggregate fair market value of the Shares or other securities otherwise issuable
upon exercise of this Warrant minus the

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aggregate Warrant Price of such Shares by (b) the fair market value of one
Share. The fair market value of the Shares shall be determined pursuant to
Article 1.3.

                  1.3      Fair Market Value. If the Company's common stock is
traded in a public market and the shares are common stock, the fair market value
of each Share shall be the closing price of a Share reported for the business
day immediately before Holder delivers its Notice of Exercise to the Company. If
the Company's common stock is not traded in a public market, the Board of
Directors of the Company shall determine fair market value in its reasonable
good faith judgment.

                  1.4      Delivery of Certificate and New Warrant. Promptly
after Holder exercises or converts this Warrant and, if applicable, the Company
receives payment of the aggregate Warrant Price, the Company shall deliver to
Holder certificates for the Shares acquired and, if this Warrant has not been
fully exercised or converted and has not expired, a new Warrant representing the
Shares not so acquired.

                  1.5      Replacement of Warrants. On receipt of evidence
reasonably satisfactory to the Company of the loss, theft, destruction or
mutilation of this Warrant and, in the case of loss, theft or destruction, on
delivery of an indemnity agreement reasonably satisfactory in form and amount to
the Company or, in the case of mutilation, or surrender and cancellation of this
Warrant, the Company shall execute and deliver, in lieu of this Warrant, a new
warrant of like tenor.

                  1.6      Treatment of Warrant Upon Acquisition of Company.

                           1.6.1    "Acquisition". For the purpose of this
Warrant, "Acquisition" means any sale, license, or other disposition of all or
substantially all of the assets of the Company, or any reorganization,
consolidation, or merger of the Company where the holders of the Company's
securities immediately before the transaction beneficially own less than 50% of
the outstanding voting securities of the surviving entity immediately after the
transaction.

                           1.6.2    Treatment of Warrant at Acquisition.

A)       Upon the written request of the Company, Holder agrees that, in the
event of an Acquisition in which the sole consideration is cash, either (a)
Holder shall exercise its conversion or purchase right under this Warrant and
such exercise will be deemed effective immediately prior to the consummation of
such Acquisition or (b) if Holder elects not to exercise the Warrant, this
Warrant will expire upon the consummation of such Acquisition. The Company shall
provide Holder with written notice of its request relating to the foregoing
(together with such reasonable information as the Holder may request in
connection with such contemplated Acquisition giving rise to such notice), which
is to be delivered to Holder not less than ten (10) days prior to the closing of
the proposed Acquisition.

B)       Upon the written request of the Company, Holder agrees that, in the
event of an Acquisition that is an "arms length" sale of all or substantially
all of the Company's assets (and only its assets) to a third party that is not
an Affiliate (as defined below) of the Company (a "True Asset Sale"), either (a)
Holder shall exercise its conversion or purchase right under this Warrant and
such exercise will be deemed effective immediately prior to the consummation of
such Acquisition or (b) if Holder elects not to

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exercise the Warrant, this Warrant will continue until the Expiration Date if
the Company continues as a going concern following the closing of any such True
Asset Sale. The Company shall provide the Holder with written notice of its
request relating to the foregoing (together with such reasonable information as
the Holder may request in connection with such contemplated Acquisition giving
rise to such notice), which is to be delivered to Holder not less than ten (10)
days prior to the closing of the proposed Acquisition.

C)       Upon the closing of any Acquisition other than those particularly
described in subsections (A) and (B) above, the successor entity shall assume
the obligations of this Warrant, and this Warrant shall be exercisable for the
same securities, cash, and property as would be payable for the Shares issuable
upon exercise of the unexercised portion of this Warrant as if such Shares were
outstanding on the record date for the Acquisition and subsequent closing. The
Warrant Price and/or number of Shares shall be adjusted accordingly.

As used herein "Affiliate" shall mean any person or entity that owns or controls
directly or indirectly twenty (20) percent or more of the stock of Company, any
person or entity that controls or is controlled by or is under common control
with such persons or entities, and each of such person's or entity's officers,
directors, joint venturers or partners, as applicable.

ARTICLE 2. ADJUSTMENTS TO THE SHARES.

                  2.1      Stock Dividends, Splits, Etc. If the Company declares
or pays a dividend on the Shares payable in common stock, or other securities,
then upon exercise of this Warrant, for each Share acquired, Holder shall
receive, without cost to Holder, the total number and kind of securities to
which Holder would have been entitled had Holder owned the Shares of record as
of the date the dividend occurred. If the Company subdivides the Shares by
reclassification or otherwise into a greater number of shares or takes any other
action which increase the amount of stock into which the Shares are convertible,
the number of shares purchasable hereunder shall be proportionately increased
and the Warrant Price shall be proportionately decreased. If the outstanding
shares are combined or consolidated, by reclassification or otherwise, into a
lesser number of shares, the Warrant Price shall be proportionately increased
and the number of Shares shall be proportionately decreased.

                  2.2      Reclassification, Exchange, Combinations or
Substitution. Upon any reclassification, exchange, substitution, or other event
that results in a change of the number and/or class of the securities issuable
upon exercise or conversion of this Warrant (and subject to Section 1.6.2, if
applicable), Holder shall be entitled to receive, upon exercise or conversion of
this Warrant, the number and kind of securities and property that Holder would
have received for the Shares if this Warrant had been exercised immediately
before such reclassification, exchange, substitution, or other event. Such an
event shall include any automatic conversion of the outstanding or issuable
securities of the Company of the same class or series as the Shares to common
stock pursuant to the terms of the Company's Certificate of Incorporation upon
the closing of a registered public offering of the Company's common stock. The
Company or its successor shall promptly issue to Holder an amendment to this
Warrant

                                       3
<PAGE>

setting forth the number and kind of such new securities or other property
issuable upon exercise or conversion of this Warrant as a result of such
reclassification, exchange, substitution or other event that results in a change
of the number and/or class of securities issuable upon exercise or conversion of
this Warrant. The amendment to this Warrant shall provide for adjustments which
shall be as nearly equivalent as may be practicable to the adjustments provided
for in this Article 2 including, without limitation, adjustments to the Warrant
Price and to the number of securities or property issuable upon exercise of the
new Warrant. The provisions of this Article 2.2 shall similarly apply to
successive reclassifications, exchanges, substitutions, or other events.

                  2.3      [reserved]

                  2.4      No Impairment. The Company shall not, by amendment of
its Certificate of Incorporation or through a reorganization, transfer of
assets, consolidation, merger, dissolution, issue, or sale of securities or any
other voluntary action, avoid or seek to avoid the observance or performance of
any of the terms to be observed or performed under this Warrant by the Company,
but shall at all times in good faith assist in carrying out of all the
provisions of this Article 2 and in taking all such action as may be necessary
or appropriate to protect Holder's rights under this Article against impairment.

                  2.5      Fractional Shares. No fractional Shares shall be
issuable upon exercise or conversion of the Warrant and the number of Shares to
be issued shall be rounded down to the nearest whole Share. If a fractional
share interest arises upon any exercise or conversion of the Warrant, the
Company shall eliminate such fractional share interest by paying Holder the
amount computed by multiplying the fractional interest by the fair market value
of a full Share.

                  2.6      Certificate as to Adjustments. Upon each adjustment
of the Warrant Price, the Company shall promptly notify Holder in writing, and,
at the Company's expense, promptly compute such adjustment, and furnish Holder
with a certificate of its Chief Financial Officer setting forth such adjustment
and the facts upon which such adjustment is based. The Company shall, upon
written request, furnish Holder a certificate setting forth the Warrant Price in
effect upon the date thereof and the series of adjustments leading to such
Warrant Price.

ARTICLE 3. REPRESENTATIONS AND COVENANTS OF THE COMPANY.

                  3.1      Representations and Warranties. The Company
represents and warrants to the Holder as follows:

                           (a)      [reserved]

                           (b)      All Shares which may be issued upon the
exercise of the purchase right represented by this Warrant shall, upon issuance,
be duly authorized, validly issued, fully paid and nonassessable, and free of
any liens and encumbrances except for restrictions on transfer provided for
herein or under applicable federal and state securities laws.

                           (c)      [reserved]

                                       4
<PAGE>

                  3.2      Notice of Certain Events. If the Company proposes at
any time (a) to declare any dividend or distribution upon any of its stock,
whether in cash, property, stock, or other securities and whether or not a
regular cash dividend; (b) [reserved]; (c) to effect any reclassification or
recapitalization of any of its stock; (d) to merge or consolidate with or into
any other corporation, or sell, lease, license, or convey all or substantially
all of its assets, or to liquidate, dissolve or wind up; or (e) [reserved],
then, in connection with each such event, the Company shall give Holder: (1) at
least 10 days prior written notice of the date on which a record will be taken
for such dividend, distribution, or subscription rights (and specifying the date
on which the holders of common stock will be entitled thereto) or for
determining rights to vote, if any, in respect of the matters referred to in (c)
and (d) above; (2) in the case of the matters referred to in (c) and (d) above
at least 10 days prior written notice of the date when the same will take place
(and specifying the date on which the holders of common stock will be entitled
to exchange their common stock for securities or other property deliverable upon
the occurrence of such event); and (3) [reserved].

                  3.3       [Reserved]

                  3.4      No Shareholder Rights. Except as provided in this
Warrant, the Holder will not have any rights as a shareholder of the Company
until the exercise of this Warrant.

ARTICLE 4. REPRESENTATIONS, WARRANTIES OF THE HOLDER. This Warrant has been
issued by the Company in reliance upon Holder's representations and warranties
contained in Sections 4.1 through 4.5 below.

                  4.1      Purchase for Own Account. This Warrant and the
securities to be acquired upon exercise of this Warrant by the Holder will be
acquired for investment for the Holder's account, not as a nominee or agent, and
not with a view to the public resale or distribution within the meaning of the
Act. Holder also represents that the Holder has not been formed for the specific
purpose of acquiring this Warrant or the Shares.

                  4.2      Disclosure of Information. The Holder has received or
has had full access to all the information it considers necessary or appropriate
to make an informed investment decision with respect to the acquisition of this
Warrant and its underlying securities. The Holder further has had an opportunity
to ask questions and receive answers from the Company regarding the terms and
conditions of the offering of this Warrant and its underlying securities and to
obtain additional information (to the extent the Company possessed such
information or could acquire it without unreasonable effort or expense)
necessary to verify any information furnished to the Holder or to which the
Holder has access.

                  4.3      Investment Experience. The Holder understands that
the purchase of this Warrant and its underlying securities involves substantial
risk. The Holder has experience as an investor in securities of companies in the
development stage and acknowledges that the Holder can bear the economic risk of
such Holder's investment in this Warrant and its underlying securities and has
such knowledge and experience in financial or business matters that the Holder
is capable of evaluating the merits and risks of its investment in this Warrant
and its underlying securities and/or has

                                       5
<PAGE>

a preexisting personal or business relationship with the Company and certain of
its officers, directors or controlling persons of a nature and duration that
enables the Holder to be aware of the character, business acumen and financial
circumstances of such persons.

                  4.4      Accredited Investor Status. The Holder is an
"accredited investor" within the meaning of Regulation D promulgated under the
Act.

                  4.5      The Act. The Holder understands that this Warrant and
the Shares issuable upon exercise or conversion hereof have not been registered
un the Act in reliance upon a specific exemption therefrom, which exemption
depends upon, among other things, the bona fide nature of the Holder's
investment intent as expressed herein. The Holder understands that this Warrant
and the Shares issued upon any exercise or conversion hereof must be held
indefinitely unless subsequently registered under the 1933 Act and qualified
under applicable state securities laws, or unless exemption from such
registration and qualification are otherwise available.

ARTICLE 5. MISCELLANEOUS.

                  5.1      Term: This Warrant is exercisable in whole or in part
at any time and from time to time on or before the Expiration Date.

                  5.2      Legends. This Warrant and the Shares (and the
securities issuable, directly or indirectly, upon conversion of the Shares, if
any) shall be imprinted with a legend in substantially the following form:

                  THIS WARRANT AND THE SHARES ISSUABLE HEREUNDER HAVE NOT BEEN
                  REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE
                  "ACT"), OR THE SECURITIES LAWS OF ANY STATE AND, EXCEPT AND
                  PURSUANT TO THE PROVISIONS OF ARTICLE 5 OF THAT CERTAIN
                  WARRANT TO PURCHASE STOCK, DATED AS OF APRIL __, 2003, BETWEEN
                  THE COMPANY AND HOLDER, MAY NOT BE OFFERED, SOLD OR OTHERWISE
                  TRANSFERRED, PLEDGED OR HYPOTHECATED UNLESS AND UNTIL
                  REGISTERED UNDER SAID ACT AND APPLICABLE STATE SECURITIES LAW
                  OR PURSUANT TO RULE 144 OR, IN THE OPINION OF LEGAL COUNSEL IN
                  FORM AND SUBSTANCE SATISFACTORY TO THE ISSUER OF THESE
                  SECURITIES, SUCH OFFER, SALE OR TRANSFER, PLEDGE OR
                  HYPOTHECATION IS EXEMPT FROM REGISTRATION.

                  5.3      Compliance with Securities Laws on Transfer. This
Warrant and the Shares issuable upon exercise of this Warrant may not be
transferred or assigned in whole or in part without compliance with applicable
federal and state securities laws by the transferor and the transferee
(including, without limitation, the delivery of investment representation
letters and legal opinions reasonably satisfactory to the Company, as

                                       6
<PAGE>

reasonably requested by the Company). The Company shall not require Holder to
provide an opinion of counsel if the transfer is to Silicon Valley Bancshares
(Holder's parent company) or any other affiliate of Holder. Additionally, the
Company shall also not require an opinion of counsel if there is no material
question as to the availability of Rule 144 of the Act, including current
information as referenced in Rule 144(c) of the Act, Holder represents that it
has complied with Rule 144(d) and (e) of the Act in reasonable detail, the
selling broker represents that it has complied with Rule 144(f) of the Act, and
the Company is provided with a copy of Holder's notice of proposed sale.

                  5.4      Transfer Procedure. Upon receipt by Holder of the
executed Warrant, Holder will transfer all of this Warrant to Silicon Valley
Bancshares, Holder's parent company, by execution of an Assignment substantially
in the form of Appendix 2. Subject to the provisions of Article 5.3 and upon
providing Company with written notice, Silicon Valley Bancshares and any
subsequent Holder may transfer all or part of this Warrant or the Shares
issuable upon exercise of this Warrant (or the Shares issuable directly or
indirectly, upon conversion of the Shares, if any) to any transferee, provided,
however, in connection with any such transfer, Silicon Valley Bancshares or any
subsequent Holder will give the Company notice of the portion of the Warrant
being transferred with the name, address and taxpayer identification number of
the transferee and Holder will surrender this Warrant to the Company for
reissuance to the transferee(s) (and Holder if applicable).

                  5.5      Notices. All notices and other communications from
the Company to the Holder, or vice versa, shall be deemed delivered and
effective when given personally or mailed by first-class registered or certified
mail, postage prepaid, at such address as may have been furnished to the Company
or the Holder, as the case may (or on the first business day after confirmed
transmission by facsimile) be, in writing by the Company or such holder from
time to time. Effective upon receipt of the fully executed Warrant and the
initial transfer described in Article 5.4 above, all notices to the Holder shall
be addressed as follows until the Company receives notice of a change of address
in connection with a transfer or otherwise:

                           Silicon Valley Bancshares
                           Attn: Treasury Department
                           3003 Tasman Drive, HA 200
                           Santa Clara, CA 95054
                           Telephone: 408-654-7400
                           Facsimile: 408-496-2405

         Notice to the Company shall be addressed as follows until the Holder
receives notice of a change in address:

                                       7
<PAGE>

                           First Virtual Communications, Inc.
                           Attn: Chief Financial Officer
                           3393 Octavius Drive
                           Santa Clara, CA 95054
                           Telephone: 408.567.7200
                           Facsimile: 408.748.2241

                  5.6      Waiver. This Warrant and any term hereof may be
changed, waived, discharged or terminated only by an instrument in writing
signed by the party against which enforcement of such change, waiver, discharge
or termination is sought.

                  5.7      Attorney's Fees. In the event of any dispute between
the parties concerning the terms and provisions of this Warrant, the party
prevailing in such dispute shall be entitled to collect from the other party all
costs incurred in such dispute, including reasonable attorney's fees.

                  5.8      Automatic Conversion upon Expiration. In the event
that, upon the Expiration Date, the fair market value of one Share (or other
security issuable upon the exercise hereof) as determined in accordance with
Section 1.3 above is greater than the Exercise Price in effect on such date,
then this Warrant shall automatically be deemed on and as of such date to be
converted pursuant to Section 1.2 above as to all Shares (or such other
securities) for which it shall not previously have been exercised or converted,
and the Company shall promptly deliver a certificate representing the Shares (or
such other securities) issued upon such conversion to the Holder.

                  5.9      Counterparts. This Warrant may be executed in
counterparts, all of which together shall constitute one and the same agreement.

                  5.10     Governing Law. This Warrant shall be governed by and
construed in accordance with the laws of the State of California, without giving
effect to its principles regarding conflicts of law.

[remainder of page intentionally left blank; signature page follows]

                                       8
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have caused this Warrant to be
executed and delivered as of the date first above written.

"COMPANY"

FIRST VIRTUAL COMMUNICATIONS, INC.

By:     /s/ Jonathan Morgan
     ------------------------------
Name:   Jonathan Morgan
     ------------------------------
       (Print)
Title: Chairman of the Board, President or
       Vice President

By:     /s/ Truman Cole
     ------------------------------
Name:   Truman Cole
     ------------------------------
       (Print)
Title: Chief Financial Officer, Secretary,
       Assistant Treasurer or Assistant
       Secretary

"HOLDER"

SILICON VALLEY BANK

By:     /s/ Chris Stedman
     ------------------------------
Name:   Chris Stedman
     ------------------------------
       (Print)
Title:
     ------------------------------

                                 Signature Page

<PAGE>

                                   APPENDIX 1

                               NOTICE OF EXERCISE

         1.       Holder elects to purchase ___________ shares of the Common
Stock of __________________ pursuant to the terms of the attached Warrant, and
tenders payment of the purchase price of the shares in full.

                  [or]

         1.       Holder elects to convert the attached Warrant into Shares/cash
[strike one] in the manner specified in the Warrant. This conversion is
exercised for _____________________ of the Shares covered by the Warrant.

         [Strike paragraph that does not apply.]

         2.       Please issue a certificate or certificates representing the
shares in the name specified below:

                           ___________________________________________
                                    Holders Name

                           ___________________________________________

                           ___________________________________________
                                    (Address)

         3.       By its execution below and for the benefit of the Company,
Holder hereby restates each of the representations and warranties in Article 4
of the Warrant as the date hereof.

                                                  HOLDER:
                                                  ______________________________

                                                  By:___________________________

                                                  Name:_________________________

                                                  Title:________________________

                                                  (Date):_______________________

                                   Appendix 1

<PAGE>

                                   APPENDIX 2

                                   ASSIGNMENT

         FOR VALUE RECEIVED, SILICON VALLEY BANK HEREBY SELLS, ASSIGNS AND
         TRANSFERS UNTO

                           NAME:            SILICON VALLEY BANCSHARES
                           ADDRESS:         3003 TASMAN DRIVE (HA-200)
                                            SANTA CLARA, CA 95054

                           TAX ID:          91-1962278

         THAT CERTAIN WARRANT TO PURCHASE STOCK ISSUED BY FIRST VIRTUAL
         COMMUNICATIONS, INC. (THE "COMPANY"), ON APRIL __, 2003 (THE "WARRANT")
         TOGETHER WITH ALL RIGHTS, TITLE AND INTEREST THEREIN.

                                           SILICON VALLEY BANK

                                           By:__________________________________

                                           Name:________________________________

                                           Title:_______________________________

Date: April __, 2003

By its execution below, and for the benefit of the Company, Silicon Valley
Bancshares makes each of the representations and warranties set forth in Article
4 of the Warrant as of the date hereof.

                                           SILICON VALLEY BANCSHARES

                                           By:__________________________________

                                           Name:________________________________

                                           Title: ______________________________

                                   Appendix 2

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