TEKELEC
424B3, 1995-08-31
RADIO & TV BROADCASTING & COMMUNICATIONS EQUIPMENT
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<PAGE>   1
                                                 This filing is made under
                                                 Paragraph(b)(3) of Rule
                                                 424 and relates to Tekelec's
                                                 Registration Statement on
                                                 Form S-3 (Reg. No. 33-62035).
                                                

                                30,000 SHARES

                                   TEKELEC

                                 COMMON STOCK

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

         This Prospectus relates to 30,000 shares of Common Stock, without par
value, of Tekelec (the ("Company" or "Tekelec") to be offered and sold from
time to time for the account of a shareholder of the Company (the "Selling
Shareholder"), which shareholder acquired such shares upon the exercise of
certain warrants issued by the Company in 1994.  See "Selling Shareholder."
The Company will not receive any of the proceeds from the sale of the Shares.

         The Shares may be offered and sold by the Selling Shareholder from
time to time in transactions on The Nasdaq Stock Market at prevailing market
prices, in privately negotiated transactions at negotiated prices, or in a
combination of such methods of sale.  The Selling Shareholder 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 or commissions
from the Selling Shareholder and/or the purchasers of the Shares for whom such
broker-dealer may act as agents or to whom they sell as principal, or both
(which compensation as to a particular broker-dealer may be in excess of
customary commissions).  See "Plan of Distribution."

         The Selling Shareholder and any brokers, dealers or agents who
participate in the sale of the Shares may be deemed to be "underwriters" within
the meaning of Section 2(11) of the Securities Act of 1933, as amended (the
"Securities Act"), and the commissions paid or discounts allowed to any such
brokers, dealers or agents, in addition to any profits received on resale of
the Common Stock, if any such broker, dealer or agent should purchase any
Common Stock as a principal, may be deemed to be underwriting discounts or
commissions under the Securities Act.

         The Selling Shareholder has agreed to pay all expenses, estimated to
be approximately $8,000, incurred in connection with this offering.

         The Company's Common Stock is traded on The Nasdaq Stock Market under
the symbol "TKLC."  On August 18, 1995, the last reported sale price of the
Common Stock on The Nasdaq Stock Market was $23.50 per share.

                  -------------------------------------------
                    THE COMMON STOCK OFFERED HEREBY INVOLVES
                  A HIGH DEGREE OF RISK.  SEE "RISK FACTORS." 
                  -------------------------------------------

         THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE
           SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES
           COMMISSION NOR HAS THE 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 August 30, 1995


<PAGE>   2

                             AVAILABLE INFORMATION

         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 periodic reports, proxy statements and other
information with the Securities and Exchange Commission (the "Commission").
Such reports, proxy statements and other information may be inspected and
copied at the public reference facilities maintained by the Commission at Room
1024, Judiciary Plaza, 450 Fifth Street, N.W., Washington, D.C. 20549 and will
also be available for inspection and copying at the regional offices of the
Commission located at Northwestern Atrium Center, 500 West Madison Street,
Suite 1400, Chicago, Illinois 60661 and at Seven World Trade Center, 13th
Floor, New York, New York 10048.  Copies of such material may also be obtained
from the Public Reference Section of the Commission at 450 Fifth Street, N.W.,
Washington, D.C. 20549 at prescribed rates.  The Company's Common Stock is
traded on The Nasdaq Stock Market.  Reports, proxy statements and other
information concerning the Company may also be inspected at the offices of
Nasdaq Operations, 1735 K Street, N.W., Washington, D.C. 20006.


                             ADDITIONAL INFORMATION

         The Company has filed with the Commission a Registration Statement on
Form S-3 under the Securities Act of 1933, as amended (the "Securities Act"),
with respect to the shares of Common Stock offered hereby.  This Prospectus
does not contain all of the information set forth in the Registration Statement
and the exhibits and schedules thereto.  For further information with respect
to the Company and the Common Stock offered hereby, reference is made to the
Registration Statement and the exhibits and schedules filed therewith.
Statements contained in this Prospectus regarding the contents of any contract
or any other document referred to are not necessarily complete, and in each
instance reference is made to the copy of such contract or other document filed
as an exhibit to the Registration Statement or otherwise filed with the
Commission, each such statement being qualified in all respects by such
reference.  The Registration Statement may be inspected without charge at the
offices of the Commission at 450 Fifth Street, N.W., Washington, D.C. 20549,
and copies of all or any part thereof may be obtained from such office upon the
payment of the fees prescribed by the Commission.


                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

         The following documents filed by the Company with the Commission are
incorporated herein by reference: (1) the Company's Annual Report on Form 10-K
for the year ended December 31, 1994; (2) the Company's Amendment No. 1 on Form
10-K/A filed April 12, 1995, amending the Company's Annual Report on Form 10-K
for the year ended December 31, 1994; (3) the Company's Report by Issuer of
Securities Quoted on The Nasdaq Stock Market on Form 10-C filed March 23, 1995;
(4) the Company's Quarterly Report on Form 10-Q for the quarter ended March 31,
1995; (5) the Company's Quarterly Report on Form 10-Q for the quarter ended
June 30, 1995; and (6) the Company's Registration Statement on Form 8-A filed
November 12, 1986, registering the Company's Common Stock under Section 12(g)
of the Exchange Act.  Reference is also made to the "Description of Capital
Stock" in this Prospectus for a current description of the Company's Common
Stock.

         All documents filed by the Company with the Commission pursuant to
Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act subsequent to the date
hereof and prior to the termination of the offering of the Common Stock
registered hereby shall be deemed to be incorporated by reference into this
Prospectus and to be a part hereof from the date of filing such documents.  Any
statement contained in





                                      -2-
<PAGE>   3

a document incorporated or deemed to be incorporated herein by reference shall
be deemed modified or superseded for purposes of this Prospectus to the extent
that a statement contained herein or in any other subsequently filed document
which also is or is deemed to be incorporated by reference herein modifies or
supersedes such statement.  Any statement so modified or superseded shall not
be deemed, except as so modified or supersedes, to constitute a part of this
Prospectus.

         The Company will provide without charge to each person to whom this
Prospectus is delivered, upon written or oral request of such person, a copy of
any or all of the documents incorporated by reference into this Prospectus
(other than exhibits to such documents, unless such exhibits are specifically
incorporated by reference into such documents).  Requests for such copies
should be directed to the Vice President, Finance and Chief Financial Officer,
Tekelec, 26580 West Agoura Road, Calabasas, California 91302.  Telephone:
(818) 880-5656.





                                      -3-
<PAGE>   4

                                  THE COMPANY

         The Company was incorporated in California in 1971 and entered the
communications diagnostic business in 1979 and the network switching business
in 1992.  Unless the context otherwise requires, the terms "Tekelec" and the
"Company" are used herein to refer to Tekelec and its wholly owned
subsidiaries.  The Company's executive offices are located at 26580 West Agoura
Road, Calabasas, California 91302, and its telephone number is (818) 880-5656.


                                  RISK FACTORS

         In addition to the other information in this Prospectus, the following
factors should be considered carefully in evaluating an investment in the
shares of Common Stock offered by this Prospectus.

         Recent History of Losses.  The Company experienced declining revenues
in 1993 and incurred substantial losses in 1992 and 1993 of $8.3 million and
$18.5 million, respectively.  Such losses were primarily as a result of delayed
product introductions which adversely affected revenues and significant
research and development expenditures, particularly for the development of its
EAGLE STP.  Although the Company returned to profitability in 1994, there can
be no assurance that the Company's profitability will continue on a quarterly
or annual basis in the future.

         Fluctuations in Quarterly Operating Results.  The Company has
experienced and may in the future experience significant fluctuations in
revenues and operating results from quarter to quarter as a result of a number
of factors, many of which are outside the control of the Company.  These
factors include the timing of significant orders and shipments, product mix,
delays in shipment, capital spending patterns of customers, competition and
pricing, new product introductions by the Company or its competitors, carrier
deployment of intelligent network services, the timing of research and
development expenditures, expansion of marketing and support operations,
changes in material costs, production or quality problems, currency
fluctuations, disruptions in sources of supply, regulatory changes and general
economic conditions.  These factors are difficult to forecast, and these or
other factors could have a material adverse effect on the Company's business
and operating results.  A large portion of the Company's product shipments in
each quarter occurs at or near the end of each quarter.  Due to the relatively
fixed nature of many of the Company's costs, including personnel and facilities
costs, the Company would not be able to reduce costs in any quarter to
compensate for any unexpected shortfall in net revenues, and such a shortfall
would have a proportionately greater impact on the Company's results of
operations for that quarter.  In addition, the Company expects that sales of
its EAGLE STP, which has a significantly higher average selling price and
generally lower gross margin than the Company's diagnostic products, will
account for an increasing percentage of the Company's revenues.  Consequently,
the addition or cancellation of EAGLE STP sales may exacerbate quarterly
fluctuations in revenues and operating results.

         Seasonality in Sales and Order Levels.  The Company's operating
results may also be affected by certain seasonal trends.  The Company typically
experiences lower domestic sales and order levels in the first quarter when
compared with the preceding fourth quarter due primarily to the capital
spending patterns of its customers.  To a lesser extent, the Company's
international sales are also subject to seasonal fluctuations.  The Company
expects these seasonal patterns to continue.

         Risks Associated with Lengthy Sales Cycle of EAGLE STP.  Orders for
the EAGLE STP have generally involved lengthy sales cycles, making it difficult
to predict the precise quarter in which sales will occur.  The EAGLE STP sales
cycle typically varies in length based on a number of factors including





                                      -4-
<PAGE>   5

customer network engineering, installation and deployment requirements and the
relative size of the customer's network.  Due to the $250,000 to $2,000,000
price range for a pair of EAGLE STPs, the Company's shipment of EAGLE STPs to a
single customer can represent a significant portion of a quarter's network
switching revenues, and delays in the timing of such shipments could have a
material adverse effect on the Company's business and operating results.

         Competition.  The Company's primary markets are intensely competitive
and are subject to rapid technological change, evolving industry standards and
regulatory developments.  The Company's existing and potential competitors
include many large domestic and international companies that have substantially
greater financial, manufacturing, technological, marketing, distribution and
other resources, larger installed customer bases and longer-standing
relationships with customers than the Company.  The Company's principal
competitor in the network diagnostic products market is Hewlett-Packard
Company.  The Company's principal competitors in the network switching products
market include major communications equipment suppliers such as Northern
Telecom Limited, DSC Communications Corporation, Ericsson S.A. and Alcatel.
The Company expects competition to increase in the future from existing
competitors and from other companies that may enter the Company's existing or
future markets with solutions which may be less costly or provide higher
performance or additional features.  Certain of the Company's customers in the
network diagnostic market also manufacture switches that compete with the EAGLE
STP.  Increasing competition in the switching market may cause these customers
to reduce their purchases of the Company's diagnostic products.  The Company
believes that its ability to compete successfully depends on several factors,
both within and outside of its control, including the price, quality,
reliability and performance of the Company's and its competitors' products, the
timing and success of new product introductions or product enhancements by the
Company and its competitors, quality of customer service and support, the
emergence of new industry standards, the development of technical innovations,
the attraction and retention of qualified personnel, regulatory changes and
general market and economic conditions.  Increasing competition could
materially and adversely affect the Company's results of operations through
price reductions and loss of market share.  There can be no assurance that the
Company will be able to compete successfully in the future.

         Rapid Technological Change; Risks Associated with Development of New
Products and Product Enhancements.  The markets for the Company's diagnostic
and switching products are characterized by rapidly changing technology,
evolving industry standards and frequent new product introductions and
enhancements.  In particular, the AIN, ATM and wireless markets are rapidly
evolving.  Sales of diagnostic products such as those offered by the Company
depend in part on the continuing development and deployment of emerging
standards and new services based on such standards.  The Company's success will
depend to a significant extent upon its ability to enhance its existing
products and to develop and introduce innovative new products that gain market
acceptance.  In recent years, sales the Company's diagnostic products were
adversely affected in part by the Company's failure to introduce new products
or enhancements in a timely manner, particularly enhancements for its MGTS/GSMT
signalling product and a Frame Relay application for its Chameleon product.
There can be no assurance that the Company will be successful in selecting,
developing, manufacturing and marketing new products or enhancing its existing
products on a timely or cost-effective basis or that the products or
technologies developed by others will not render the Company's products
noncompetitive or obsolete.  Moreover, the Company may encounter technical
problems in connection with its product development that could result in the
delayed introduction of new products or product enhancements.  Failure to
develop or introduce on a timely basis new products or product enhancements
that achieve market acceptance would materially and adversely affect the
Company's business, operating results and financial condition.

         Products as complex as those offered by the Company may contain
undetected errors when first introduced or as new versions are released.  Such
errors have occurred in the past.  While the Company's





                                      -5-
<PAGE>   6

products have not experienced any significant errors, such errors, particularly
those that result in a failure of the Company's switching products, could have
a material adverse effect on the Company's customer relationships, business and
operating results.  There can be no assurance that errors will not be found in
the Company's products.

         Dependence on Relationship with AT&T.  The Company believes that its
ability to compete successfully in the switching market depends in part on
distribution and marketing relationships with leading communications equipment
suppliers.  In September 1994, the Company entered into a non-exclusive
distribution agreement with AT&T for the EAGLE STP and has sold EAGLE STPs to
purchasers affiliated with AT&T.  The Company's agreement with AT&T can be
terminated by either party at any time for any reason and does not impose any
minimum purchase requirements on AT&T.  Consequently, there can be no assurance
that AT&T or its affiliates will continue to place orders with the Company or
that the Company's relationship with AT&T will continue for an extended period
of time or will be of continuing value to the Company.  Under the distribution
agreement, AT&T is not precluded from developing or selling products that are
competitive with the Company's products, and such competition could materially
and adversely affect the Company's business and operating results.  If the
relationship with AT&T were to terminate, there can be no assurance that the
Company could establish a similar relationship with another company.

         Dependence on Evolving Market for Advanced Intelligent Network (AIN)
Services.  A substantial portion of the Company's revenues are derived from the
sale of diagnostic systems and switching systems that enable network operators
to offer AIN services.  Although several network operators offer or have
announced plans to offer AIN services, there can be no assurance that network
operators will be able to introduce these services successfully, that such
services will gain widespread market acceptance or that network operators will
use the Company's products in the deployment of these services.  In addition,
the timing of the implementation of AIN services by network operators may be
affected by the need to obtain necessary regulatory approvals and other
factors.  Delays in the introduction of AIN services, failure of these services
to gain widespread market acceptance or the decision of network operators not
to use the Company's products in the deployment of these services would
materially and adversely affect the Company's business, operating results and
financial condition.

         Compliance with Regulations; Evolving Industry Standards; Broader
Market Acceptance of EAGLE STP.  In order to gain broader market acceptance,
the Company's products must meet a significant number of regulations and
standards.  In the United States, the Company's products must comply with
various regulations defined by the Federal Communications Commission and
Underwriters Laboratories as well as standards established by Bell
Communications Research (Bellcore).  Internationally, the Company's products
must comply with standards established by telecommunications authorities in
various countries as well as with recommendations of the International
Telephone and Telegraph Consultative Committee (CCITT).  In addition, standards
for new services such as ATM and PCS are still evolving.  As these standards
evolve, the Company will be required to modify its products or develop and
support new versions of its products.  The failure of the Company's products to
comply, or delays in compliance, with the various existing and evolving
industry standards could delay introduction of the Company's products, which
could have a material adverse effect on the Company's business and operating
results.

         In order to penetrate the portion of the public carrier market
dominated by the Regional Bell Operating Companies (RBOCs), it is important
that ongoing technical audits of the EAGLE STP be conducted by Bellcore to help
the Company ensure interoperability with the operations, administration,
maintenance and provisioning systems used by the RBOCs to manage their
networks.  Failure or delay in obtaining favorable technical audit results
could have a material adverse effect on the Company's





                                      -6-
<PAGE>   7

ability to sell products to this large segment of the communications market.
Furthermore, even if the Company does obtain favorable technical audit results,
there can be no assurance that the RBOCs or other telephone companies will
purchase the EAGLE STP rather than competitive products.

         Government regulatory policies are likely to continue to have a major
impact on the pricing of existing as well as new public network services and,
therefore, are expected to affect demand for such services and the
communications products, including the Company's products, that support such
services.  Tariff rates, whether determined autonomously by carriers or in
response to regulatory directives, may affect cost effectiveness of deploying
public network services. Tariff policies are under continuous review and are
subject to change.  User uncertainty regarding future policies may also affect
demand for communications products, including the Company's products.

         Risks Associated with International Business.  The Company sells its
products worldwide through its direct sales force, distributors and wholly
owned subsidiaries in Japan and Canada.  International sales accounted for 43%,
51%, 43% and 47% of the Company's revenues in 1992, 1993, 1994 and the first
six months of 1995, respectively.  The Company's sales through its Japanese and
Canadian subsidiaries are denominated in local currencies while other
international sales are U.S. dollar-denominated.  The Company expects that
international sales will continue to account for a significant portion of its
revenues in future periods.  International sales are subject to inherent risks,
including unexpected changes in regulatory requirements and tariffs,
difficulties in staffing and managing foreign operations and distributors,
longer payment cycles, greater difficulty in accounts receivable collection and
potentially adverse tax consequences.  Additionally, exchange rate fluctuations
on foreign currency transactions and translations arising from international
operations may contribute to fluctuations in the Company's business and
operating results.  Fluctuations in exchange rates could also affect demand for
the Company's products.  If, for any reason, exchange or price controls or
other restrictions in foreign countries are imposed, the Company's business and
operating results could be materially adversely affected.  In addition, any
inability to obtain local regulatory approvals in foreign markets on a timely
basis could have a material adverse affect on the Company's business and
operating results.

         Foreign communications networks are in most cases owned by or strictly
regulated by government.  Access to such markets is often difficult due to the
established relationships between a government owned or controlled
communications operating company and its traditional indigenous suppliers of
communications equipment.  There can be no assurance that the Company will be
able to successfully penetrate these markets, particularly for its switching
products.

         Dependence on Key Suppliers.  Certain key components used in the
Company's products, such as certain microprocessors, video displays and power
supplies, are currently being purchased from sole sources, and the Company does
not have any long-term supply agreements to ensure uninterrupted supply of
these components.  The inability to obtain sufficient sole or limited source
components as required, or to develop alternative sources if and as required,
could result in delays or reductions in product shipments which could
materially and adversely affect the Company's operating results and damage
customer relationships.

         Dependence on Key Personnel.  The Company's success depends to a
significant extent upon the continuing contributions of its key management,
technical, sales and marketing and other key personnel.  The Company does not
have employment agreements or other arrangements with such individuals which
would prevent them from leaving the Company.  The Company's future success also
depends upon its ability to attract and retain highly skilled personnel.
Competition for such employees is intense.  The loss of any current key
employees or the inability to attract and retain additional key personnel could
have a material adverse effect on the Company's business and operating results.





                                      -7-
<PAGE>   8

         Limited Protection of Proprietary Technology.  The Company depends in
part upon its proprietary technology and know-how to differentiate its products
from those of its competitors.  The Company does not have any patents and
relies upon a combination of trade secret, copyright and trademark laws and
contractual restrictions to establish and protect proprietary rights in its
products.  The Company generally enters into confidentiality and invention
assignment agreements with its employees and non-disclosure and confidentiality
agreements with its suppliers, distributors and appropriate customers, among
others, and limits access to and disclosure of its proprietary information.
Despite these precautions, it may be possible for a third party to copy or
otherwise obtain and use the Company's proprietary technology without
authorization.  Accordingly, there can be no assurance that such laws and
contractual agreements will prove sufficient to deter misappropriation of the
Company's technology or independent third-party development of similar
technologies.  The laws of certain foreign countries in which the Company's
products are or may be developed, manufactured or sold may not protect the
Company's products or intellectual property rights to the same extent as do the
laws of the United States and thus make the possibility of misappropriation of
the Company's technology and products more likely.

         Risk of Third Party Claims of Infringement.  The communications
industry is characterized by the existence of a large number of patents and
frequent litigation based on allegations of patent infringement.  From time to
time, third parties may assert exclusive patent, copyright, trademark and other
intellectual property rights to technologies that are important to the Company.
There can be no assurance that third parties will not assert infringement
claims against the Company, that any such assertion of infringement will not
result in litigation or that the Company would prevail in such litigation or be
able to license any valid and infringed patents of third parties on
commercially reasonable terms.  Furthermore, litigation, regardless of its
outcome, could result in substantial cost to and diversion of effort by the
Company.  Any infringement claims or litigation against the Company could
materially and adversely affect the Company's business, operating results and
financial condition.

         Control by Tekelec-Airtronic and its Affiliates.  As of the date of
this Prospectus, Tekelec-Airtronic, S.A. (Tekelec-Airtronic) and Jean-Claude
Asscher, a director of the Company, own an aggregate of 9.5% of the Company's
outstanding shares.  Mr. Asscher is the President and controlling shareholder
of Tekelec-Airtronic, a France-based electronics company which, together with
certain of its subsidiaries, acts as European distributors for the Company.  In
addition, as of the date of this Prospectus, Edouard Givel, through Natinco,
S.A. (Natinco), a Luxembourg investment company which he controls and which is
a minority shareholder of Tekelec-Airtronic, owns 24.2% of the Company's
outstanding shares.  Due to Mr. Asscher's relationship with Mr. Givel and his
role as an advisor to Natinco, Mr. Asscher may be deemed to share with Mr.
Givel the beneficial ownership of the shares of the Company's Common Stock held
by Natinco.  Sales of the Company's products and services to Tekelec-Airtronic
and its subsidiaries accounted for approximately 6.7%, 8.5%, 6.2% and 8.6% of
the Company's net revenues for 1992, 1993, 1994 and the first six months of
1995.  The Company expects that Tekelec-Airtronic and its subsidiaries will
continue to act as European distributors for the Company.  In the past, the
Company has purchased certain components from Tekelec-Airtronic and its
subsidiaries and expects that it will continue to do so in the future.  Mr.
Asscher, Tekelec-Airtronic and Mr. Givel may be subject to potential conflicts
of interest with respect to future transactions with Tekelec.  There can be no
assurance that such conflicts will be resolved in the best interests of the
Company.  If Tekelec-Airtronic, Mr. Asscher and Mr. Givel act together, they
constitute the largest shareholder of the Company, controlling approximately
33.7% of the outstanding shares as of the date of this Prospectus, and they
have the power to elect a significant number of the Company's Board of
Directors and to exert significant influence over the Company's business and
affairs and over the outcome of actions requiring shareholder approval.





                                      -8-
<PAGE>   9

         Volatility of Stock Price.  The Common Stock is currently trading at
or near its record high, and has experienced significant price and volume
fluctuations.  The market price of the Company's Common Stock could be subject
to wide fluctuations in response to quarter-to-quarter variations in the
Company's operating results, changes in earnings estimates by analysts,
announcements of technological innovations or new products or enhancements by
the Company or its competitors, delays in new product introductions or
enhancements, developments in the Company's relationships with its customers,
strategic partners or suppliers, general conditions in the communications
industries, changes in investment strategy by significant shareholders and
other events or factors, which may be unrelated to the Company.  There can be
no assurance that the market price of the Company's Common Stock will not
experience significant fluctuations in the future, including fluctuations that
are unrelated to the Company's operating performance.

         Sales of Shares Eligible for Future Sale; Possible Adverse Effect on
Future Market Price.  Sales of substantial amounts of Common Stock in the
public market after the date of this Prospectus could adversely affect
prevailing market prices for the Company's Common Stock.  The executive
officers and certain directors of the Company owning an aggregate of 525,872
shares (including options and warrants to purchase an aggregate of 374,854
shares which are exercisable or become exercisable within 60 days after August
1, 1995) and certain shareholders of the Company owning an aggregate of
3,873,520 shares (including options to purchase an aggregate of 25,000 shares
which are exercisable or become exercisable within 60 days after August 1,
1995) have agreed not to sell or transfer any shares owned by them until August
24, 1995 and November 22, 1995, respectively, without the prior written consent
of Alex. Brown & Sons Incorporated.  Subject to such restrictions and the
resale limitations of Rule 144, all of the outstanding shares of the Company's
Common Stock are eligible for sale.

         Securities and Exchange Commission Investigation.  The Commission has
issued a formal order for an investigation relating to certain trading in the
securities of the Company.  The formal order states that the Commission staff
has information tending to show that certain individuals and entities may have
traded stock of the Company while in possession of material non-public
information and/or may have disclosed material non-public information to others
in breach of their fiduciary duties or other relationships of trust and
confidence, which allegations, if true, would result in possible violation of
Section 17(a) of the Securities Act and Section 10(b) of the Exchange Act.  The
ultimate outcome of the investigation cannot be predicted as of the date of
this Prospectus.





                                      -9-
<PAGE>   10

                                USE OF PROCEEDS

         The Company will not receive any proceeds from the sale of the shares
offered hereby by the Selling Shareholder.


                              SELLING SHAREHOLDER

         The following table sets forth certain information with respect to the
Selling Shareholder as of August 30, 1995:

                        COMMON STOCK BENEFICIALLY OWNED


<TABLE>
<CAPTION>
                                                                                                       PERCENTAGE OWNED
                                          PRIOR TO        OFFERED         UPON COMPLETION             UPON COMPLETION OF
     NAME OF SELLING SHAREHOLDER(1)       OFFERING        HEREBY         OF THE OFFERING(2)            THE OFFERING(2)  
     ------------------------------      -----------     ---------       ------------------           ------------------     
     <S>                                   <C>            <C>                    <C>                          <C>
     Coudert Brothers                      30,000         30,000                 0                            0%
</TABLE>

_________________________

(1)      The Selling Shareholder has sole voting and investment power with
         respect to all shares of Common Stock shown as being beneficially 
         owned by the Selling Shareholder.

(2)      Assumes that all shares covered by this Prospectus are sold or
         otherwise disposed of and that no other shares are acquired by the
         Selling Shareholder.

                          DESCRIPTION OF CAPITAL STOCK

         The Company is authorized to issue up to 50,000,000 shares of Common
Stock, without par value.  As of August 1, 1995, there were 11,407,819 shares
of Common Stock outstanding, held of record by 215 shareholders.  The holders
of Common Stock are entitled to one vote for each share held of record on each
matter submitted to a vote of shareholders, except that, upon giving notice
required by law, shareholders may cumulate their votes in the election of
directors.  Holders of Common Stock are entitled to receive ratably such
dividends as may be declared by the Board of Directors out of funds legally
available therefor.  In the event of a liquidation, dissolution or winding up
of the Company, holders of Common Stock are entitled to share ratably in all
assets remaining after payment of liabilities and the liquidation preference of
any outstanding senior securities.  Holders of Common Stock have no preemptive
rights and have no rights to convert their Common Stock into any other
securities.  The outstanding shares of Common Stock are validly issued, fully
paid and nonassessable.





                                      -10-
<PAGE>   11

                              PLAN OF DISTRIBUTION

         The shares offered hereby are being offered directly by the Selling
Shareholder.  The Company will receive no proceeds from the sale of the Shares.
Sales may be effected by the Selling Shareholder from time to time in
transactions on The Nasdaq Stock Market at prevailing market prices, in
negotiated transactions at negotiated prices or in a combination of such
methods of sale.  The Selling Shareholder 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 or commissions from the Selling
Shareholder and/or the purchasers of the Shares for whom such broker-dealers
may act as agents or to whom they sell as principal, or both (which
compensation as to a particular broker- dealer may be in excess of customary
commissions).  There can be no assurance that the Selling Shareholder will sell
all or any of the shares offered hereby.

         The Selling Shareholder and any persons who participate in the sale of
the shares offered hereby from time to time may be deemed to be "underwriters"
within the meaning of Section 2(11) of the Securities Act.  Any commissions
paid or discounts or concessions allowed to any such persons and any profits
received on resale of the shares offered hereby, may be deemed to be
underwriting compensation under the Securities Act.

         In order to comply with the securities laws of certain states, if
applicable, the shares offered hereby will be sold in such jurisdictions only
through registered or licensed brokers or dealers.  In addition, in certain
states the shares may not be sold unless they have been registered or qualified
for sale in the applicable state or an exemption from the registration or
qualification requirement is available.

         The Selling Shareholder has agreed to bear all expenses in connection
with the registration and sale of the shares being offered hereby by the
Selling Shareholder in over-the-counter market transactions or in negotiated
transactions.  The Company has filed with the Commission a Registration
Statement on Form S-3 under the Securities Act with respect to the resale of
the shares offered hereby from time to time in such over-the-counter market
transactions or in negotiated transactions.  This Prospectus forms a part of
such Registration Statement.

                                 LEGAL MATTERS

         The validity of the shares of the Company's Common Stock offered
hereby will be passed upon for the Company by Coudert Brothers, Los Angeles,
California.  Coudert Brothers is the Selling Shareholder and owns the 30,000
shares of Common Stock offered hereby.  Ronald W. Buckly, a member of Coudert
Brothers, is Corporate Secretary of Tekelec and beneficially owns 3,000 shares
of Tekelec Common Stock.

                                    EXPERTS

         The consolidated financial statements of the Company incorporated in
this Prospectus by reference from the Company's Annual Report on Form 10-K for
the year ended December 31, 1994 have been audited by Coopers & Lybrand L.L.P.,
independent accountants, as set forth in their report thereon included therein.
Such consolidated financial statements are incorporated by reference herein in
reliance upon such report given upon the authority of such firm as experts in
accounting and auditing.





                                      -11-
<PAGE>   12

GLOSSARY


AIN (ADVANCED INTELLIGENT NETWORK):  Bellcore's set of standards for advanced
intelligent services for the telephone networks of Regional Bell Operating
Companies.

ATM (ASYNCHRONOUS TRANSFER MODE):  A broadband, low-delay, packet-based
switching and multiplexing technique to transmit voice, data and video
information.  Usable capacity is segmented into fixed-size cells, consisting of
header and information fields, allocated to services on demand.

CCITT (INTERNATIONAL TELEPHONE AND TELEGRAPH CONSULTATIVE COMMITTEE):  A United
Nations organization which establishes international telecommunications
standards.

FRAME RELAY:  A variable length packet-based transmission technology that is
used to transmit data at speeds up to 2 Mbps.

MBPS (MEGABITS PER SECOND):  A measurement unit, equal to 1,048,576 bits per
second, used to describe data transfer rates as a function of time.

PACKET SWITCHING:  A data transmission technique whereby user information is
segmented and routed in discrete data envelopes called packets, each with its
own appended control information for routing, sequencing and error checking.

PCS (PERSONAL COMMUNICATIONS SERVICES):  A set of evolving standards and
protocols providing for the concept of one number per user and associated
advanced intelligent services regardless of location, primarily involving
mobile communications.

PROTOCOL:  A formal set of standards governing the establishment of a
communications link and controlling the format and timing of transmissions
between two devices.

SIGNALLING:  The process by which digital information is exchanged to
establish, control and manage connections in a communications network.

SS7 (COMMON CHANNEL SIGNALLING SYSTEM NO. 7):  A complex protocol which governs
signalling between certain devices in a digital telephone network.

STP (SIGNAL TRANSFER POINT):  A switch that handles the signalling messages
used to set up telephone calls, queries external databases for routing and
processing information and dispatches call handling instructions.





                                      -12-
<PAGE>   13

         NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY
REPRESENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS, AND, IF GIVEN OR
MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING
BEEN AUTHORIZED.  THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY ANY SECURITIES OTHER THAN THE SECURITIES TO
WHICH IT RELATES OR ANY OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY
SUCH SECURITIES IN ANY CIRCUMSTANCES IN WHICH SUCH OFFER OR SOLICITATION IS
UNLAWFUL.  NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE 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
<TABLE>
<CAPTION>
                                                                                                  PAGE
                                                                                                  ----
<S>                                                                                                <C>
Available Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       2
Additional Information  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       2
Incorporation of Certain Documents
  by Reference  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       2
The Company . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       4
Risk Factors  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       4
Use of Proceeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      10
Selling Shareholder   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      10
Description of Capital Stock  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      10
Plan of Distribution  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      11
Legal Matters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      11
Experts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      11
Glossary  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      12
</TABLE>


                                 30,000 SHARES


                                    TEKELEC


                                  COMMON STOCK





                              ___________________

                                   PROSPECTUS
                              ___________________





                                August 30, 1995






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