[1] It provided IP services to help mobile carriers with network signaling, policy control, and subscriber data management.

[2] In 1961, Jean-Claude Asscher founded Tekelec-Airtronic, SA, a French electronics company with emphasis on the aviation industry.

It was based in Santa Monica, California Tekelec was initially financed by proceeds earned by Jean-Claude Asscher through Tekelec-Airtronic.

Tekelec successfully competed with two pre-existing competitors, Atlantic Research and Idacom, to become the dominant player in this specific type of test equipment.

Tekelec later transitioned to operating equipment in the form of Signalling System 7 products, under the initial lead of Peter Vicars, who followed Philip Black as CEO.

[3] Peter N Vicars joined Tekelec and served as its President and Chief Executive Officer from July 1987 until January 1994.

Vicars is also credited for implementing an expense reduction program, due to the switching product startup development and initial market entry costs, which returned the corporation to profitability.

[9] Ronald J. de Lange joined Tekelec in July 2005 and served as executive vice president Global Business Solutions before being promoted to CEO in May 2011.

[citation needed] On February 5, 2008, Tekelec acquired substantially all of the assets of Estacado Systems, LLC, a software development company led by a team that has been instrumental in the creation of Session Initiation Protocol (SIP) and a number of its advanced features.

The lawsuit alleges that Tekelec misled the investing public about its business dealings in emerging markets (namely India), thereby inflating the price of TKLC stock.

[citation needed] In November 2011, investors led by Siris Capital Group agreed to buy Tekelec for $780 million, making the company private.

"[19] In October 2010, it was announced that MetroPCS selected Tekelec's Diameter Signaling Router for deployment in the first U.S. LTE network.

A panel of service providers and industry analysts selected Tekelec as the company that best embraces and promotes innovation throughout its organization.