Exchange Commission

We look forward to leave our footprint throughout Europe. For more information on number portability, Tekelec has research report on portability of numbers (Number Portability Research Note) of Analysys Mason and his own technical paper on number portability operational guidelines (Operator Guidelines for Number Portability) which can be downloaded free of charge. About Tekelec Tekelec, global leader of multimedia session control core, mobile messages and networks intelligent, ensures a scalable, secure, high availability communications. The the company which are leaders in the market of signalling systems interaction of different applications, technologies and networking protocols, achieving a smooth transition to the next generation networks. Tekelec has over 20 offices around the world that provide service to customers in more than 100 countries. Its headquarters is located near the Research Triangle Park of Morrisville, N.C., USA.UU. For more information, visit.

FUTURE statements some statements that are made in this press release are in the future and reflect the intentions, beliefs or actual expectations of the company, so it include certain risks and uncertainties. The real progress of the company in the future may differ materially from those expectations as a result of risk factors that are important, which include, in addition to those identified in the company 10-K reports, 10-Q of the first, second and third quarter of 2009 and other documentation of the Comision del Mercado de Valores (Securities and Exchange Commission), the effect of variations in the current economic crisis, including the impact of credit availability and fluctuations of the market of changes on the total capital spending of our customers, changes to the current or future deterioration of economic, social or political conditions in the countries in which we are operating, the opportunity in time and functional competitiveness of our product launch, the timetable for implementation of the revenue and possible changes in accounting regulations, our ability to sustain the support of manufacturers, partners and distributors and the relationship with suppliers, the extent of possible subcontracting of any of our customers with our competitors and the consolidation of suppliers, factors that may influence the participation of our competitors in customer acquisitions, any interruption of activity of the company, its suppliers or customers as a result of the current or future pandemics of flu, our ability to compete with other manufacturers that have cost levels lower than us or are funded partially by foreign Governments either carry out unfair trading practices, our ability to integrate acquisitions, our ability to protect the rights of intellectual property, or the risk of breaking or entering into litigation with others regarding their intellectual property rights, and changes in the price of shares in the company in bag. The company makes no commitment to update publicly any declarations in the future whether because of new information, future events or any other circumstance.