EXHIBIT 10.2


                                  May 22, 2000

PERSONAL AND CONFIDENTIAL                                            VIA HAND

Paul J. Pucino
3654 Barham Blvd.
Los Angeles, CA   90068

Dear Paul:

      On behalf of Tekelec, I am pleased to offer you employment as Vice
President and Chief Financial Officer, on the terms and conditions set forth in
this letter. As Vice President and Chief Financial Officer you will report
directly to Tekelec's Chief Executive Officer, will be principally responsible
for Tekelec's financial matters and will have such other duties and
responsibilities as may be delegated to you from time to time by the Chief
Executive Officer and/or the Board of Directors. You may choose your employment
start date so long as it is on or before June 5, 2000.

      Your compensation and benefits will be as follows:

      1.    Your starting annual base salary will be $230,000 (i.e., $8,846.15
            per bi-weekly period).

      2.    You will be eligible to participate in Tekelec's 2000 Officer Bonus
            Plan, under which you will be eligible to receive up to 70% of your
            annual base salary earned during 2000 as a cash bonus if Tekelec
            achieves certain financial milestones in 2000. For 2000, you will be
            guaranteed a minimum bonus of $50,000 which will be paid during the
            first quarter of 2001. This represents half of the bonus for which
            you would be eligible based on your participation in the Plan for
            seven months of 2000.

      3.    You will be entitled to a $20,000 report to work bonus payable on
            your first check.

      4.    You will be entitled to take four weeks personal time annually.




                                                                    EXHIBIT 10.2


      5.    You will receive applicable benefits, including health, dental,
            vision, long-term disability and life insurance, as are generally
            provided to Tekelec's executive officers.

      6.    You will be offered the opportunity to participate in Tekelec's
            Employee Stock Purchase Plan and 401(k) Plan upon your satisfaction
            of the eligibility requirements for such plans.

      7.    You will be covered by Tekelec's Officer Severance Plan (a copy of
            which is enclosed).

      8.    The Compensation Committee of Tekelec will grant to you stock
            options (incentive stock options to the maximum extent permitted
            under law, with the balance being nonstatutory stock options) under
            Tekelec's 1994 Stock Option Plan (the "Plan") to purchase 225,000
            shares of Tekelec Common Stock ("Options"), effective as of the
            later of your start date or the date of the Compensation Committee's
            action granting such options (the "grant date"). The exercise price
            of your Options will be equal to the closing price of Tekelec's
            Common Stock on the grant date (as reported in THE WALL STREET
            JOURNAL on the first business day following the grant date). Your
            Options will vest to the extent of 56,250 shares on the one-year
            anniversary of your start date. The remaining 168,750 shares will
            vest and become exercisable cumulatively in 12 equal quarterly
            installments of 14,062.5 shares each, with the first installment
            vesting on September 30, 2001 and one additional installment vesting
            on the last day of each calendar quarter thereafter as long as you
            remain an employee of Tekelec. Your Options will expire, to the
            extent previously unexercised, upon the earlier of ten years from
            the date of grant or a date not less than three months after you
            cease to be a Tekelec employee as determined in accordance with the
            terms of the Plan. The Options will in all respects be subject to
            the terms and provisions of the Plan and the stock option agreement
            evidencing the grant of the Options. In addition to the foregoing
            grant, it is anticipated that the Compensation Committee will
            periodically, typically annually, consider whether additional
            options should be granted to you while you remain an officer of the
            Company.

      You are aware that Tekelec prohibits employees from unlawfully using
confidential or proprietary information belonging to any other person or entity.
By signing the enclosed copy of this letter, you agree not to disclose or use or
induce Tekelec or any of its employees to use any trade secrets or confidential
or proprietary information belonging to any of your former employers.

      As a condition of commencing your employment with Tekelec, you will be
required to sign Tekelec's standard "Confidentiality and Non-Disclosure
Agreement and Assignment of Rights" (a copy of which is enclosed). As with every
Tekelec employee, you




                                                                    EXHIBIT 10.2


reserve the right to terminate your employment at any time for any reason, and
we similarly reserve the right to terminate your employment at any time, with or
without cause. We hope and expect, however, that this will be a long and
mutually beneficial relationship.

      This letter agreement contains our entire understanding with respect to
your employment with Tekelec and supercedes and replaces in its entirety that
certain employment offer letter dated May 9, 2000 previously sent to you. The
provisions of this letter may be amended only by a writing signed by you and
Tekelec. If you have any questions about the meaning of any of the terms or
provisions included herein, please let me know at your earliest convenience.
This letter agreement shall be construed under the laws of California.

      Paul, we believe that Tekelec can provide you with opportunities for
professional growth and financial return. We look forward to working with you
and to a mutually fulfilling and rewarding relationship.

      If this letter agreement is acceptable to you, then please acknowledge
your acceptance by signing and dating the enclosed copy of this letter agreement
where indicated below and then faxing (fax number: 818.880.0176) and returning
such signed copy to me for receipt no later than May 24, 2000.

                                          Sincerely,



                                          Michael L. Margolis
                                          Chief Executive Officer and President



Acknowledged and Accepted:


____________________________________      Date:  May ___, 2000
Paul Pucino