NOTICE OF GUARANTEED DELIVERY
                                      FOR

                        TENDER OF SHARES OF COMMON STOCK
                                       OF

                              DIALOGIC CORPORATION
                                       TO

                       INTEL LMH ACQUISITION CORPORATION
                          A WHOLLY OWNED SUBSIDIARY OF

                               INTEL CORPORATION

  THE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT MIDNIGHT, NEW YORK CITY TIME,
             ON FRIDAY, JULY 2, 1999 UNLESS THE OFFER IS EXTENDED.

     This form, or one substantially equivalent to this form, must be used to
accept the Offer (as defined below) if certificates representing shares of
common stock, no par value (collectively, the "Shares"), of Dialogic
Corporation, a New Jersey corporation, are not immediately available, if the
procedure for book-entry transfer cannot be completed on a timely basis, or if
time will not permit all required documents to reach the Depositary (as defined
in the Offer to Purchase) on or prior to the Expiration Date (as defined in the
Offer to Purchase). This form may be delivered by hand or transmitted by
telegram, facsimile transmission or mail to the Depositary. See Section 2 of the
Offer to Purchase.

                        The Depositary for the Offer is:

                                 CITIBANK, N.A.

<TABLE>
<S>                                <C>                                <C>
             By Mail:                    By Overnight Courier:                     By Hand:
          Citibank, N.A.                     Citibank, N.A.                     Citibank, N.A.
           P.O. Box 685                 915 Broadway, 5th Floor             Corporate Trust Window
       Old Chelsea Station              New York, New York 10010          111 Wall Street, 5th Floor
     New York, New York 10113                                              New York, New York 10043
</TABLE>

<TABLE>
<S>                                                 <C>
            By Facsimile Transmission:                         Confirm Receipt of Facsimile
         (For Eligible Institutions Only)                           by Telephone Only:
                  (212) 505-2248                                      (800) 270-0808
</TABLE>

     DELIVERY OF THIS NOTICE OF GUARANTEED DELIVERY TO AN ADDRESS OTHER THAN ONE
SET FORTH ABOVE OR TRANSMISSION OF INSTRUCTIONS VIA FACSIMILE TRANSMISSION OTHER
THAN THE FACSIMILE NUMBER SET FORTH ABOVE WILL NOT CONSTITUTE A VALID DELIVERY.

Ladies and Gentlemen:

     The undersigned hereby tenders to Intel LMH Acquisition Corporation, a New
Jersey corporation and a wholly owned subsidiary of Intel Corporation, a
Delaware corporation, upon the terms and subject to the conditions set forth in
the Offer to Purchase dated June 7, 1999 and the related Letter of Transmittal
(which together constitute the "Offer"), receipt of which is hereby
acknowledged, the number of Shares indicated below pursuant to the guaranteed
delivery procedures set forth in Section 2 of the Offer to Purchase.

Certificate No(s). (if available)
- --------------------------------------------------------------------------------

Number of Shares:
- --------------------------------------------------------------------------------

  [ ]  Check if Shares will be tendered by book-entry transfer:

Account Number
- --------------------------------------------------------------------------------

Dated , 1999

Name(s) of Record Holder(s)
- --------------------------------------------------------------------------------
                                        (PLEASE TYPE OR PRINT)

Address(es)
- --------------------------------------------------------------------------------
                                                                        ZIP CODE

Area Code and Tel. No.
- --------------------------------------------------------------------------------

Signature(s)
- --------------------------------------------------------------------------------

                                   GUARANTEE

                    (NOT TO BE USED FOR SIGNATURE GUARANTEE)

     The undersigned, a bank, broker, dealer, credit union, savings association
or other entity that is a member in good standing of the Securities Transfer
Agents Medallion Program, the New York Stock Exchange Medallion Signature
Guarantee Program or the Stock Exchange Medallion Program, (a) represents that
the above named person(s) "own(s)" the Shares tendered hereby within the meaning
of Rule 14e-4 promulgated under the Securities Exchange Act of 1934, as amended,
(b) represents that such tender of Shares complies with Rule 14e-4 under the
Exchange Act, and (c) guarantees delivery to the Depositary, at one of its
addresses set forth above, of certificates representing the Shares tendered
hereby in proper form for transfer, or confirmation of book-entry transfer of
such Shares into the Depositary's accounts at The Depository Trust Company, in
each case with delivery of a properly completed and duly executed Letter of
Transmittal (or facsimile thereof), and any other required documents, within
three Nasdaq National Market trading days after the date hereof.

<TABLE>
<S>                                                 <C>
Name of Firm:                                       ------------------------------------------------
- ----------------------------------------------                    AUTHORIZED SIGNATURE
                                                    ------------------------------------------------
                                                                         TITLE

Address:                                            Name:
- ------------------------------------------------    ------------------------------------------------
                                                                  PLEASE TYPE OR PRINT

- ------------------------------------------------    Title:
                    ZIP CODE                        ------------------------------------------------

Area Code and                                                        Dated: , 1999
Telephone Number:
     -------------------------------------
</TABLE>

NOTE: DO NOT SEND SHARE CERTIFICATES WITH THIS NOTICE. SHARE CERTIFICATES SHOULD
BE SENT WITH YOUR LETTER OF TRANSMITTAL.