March 20, 2007, Plano, TX - GENBAND™ Inc., a leading provider of IMS-based telecommunications applications and infrastructure products enabling converged IP multimedia services, today announced it has signed a definitive agreement to acquire Tekelec’s switching solutions business unit.

The acquisition will expand GENBAND’s portfolio of infrastructure, applications and services for wireline, wireless and cable service providers. Tekelec’s switching solutions business unit includes the businesses Santera, VocalData and Taqua, all of which had been acquired by Tekelec between 2003 and 2004. The portfolio of wireline and wireless media gateways and application platforms are synergistic with GENBAND’s existing gateway and application portfolio. The resulting GENBAND product portfolio represents an aggregate next-generation development investment that exceeds $1 billion.

"It is rare that an acquisition such as this one allows for such product synergies,” said Charles D. Vogt, president and CEO of GENBAND. “In addition, the two companies are headquartered in Plano, Texas. GENBAND’s vision and direction has been clearly focused on market leadership in the applications and infrastructure solutions market. The combination of the two companies creates an enviable gateway and applications product portfolio and enables GENBAND to strengthen its relationship with our existing customers as well as our call control and access business partners.”

“This is a very positive move for everyone involved in this transaction,” said Frank Plastina, president and CEO of Tekelec. “Prospective and existing customers should feel very comfortable to know that the SSG portfolio is with a company like GENBAND who is already very familiar with the product line and market it serves.”

The combined company will continue to be headquartered in Plano, Texas with research and development facilities in Plano and Austin, Texas, Shanghai, China and New Delhi, India.

About Tekelec

Tekelec is a high-performance network applications company that is accelerating the transition to IP Multimedia Subsystem (IMS) networks for service providers around the globe. With its experience at the intersection of network applications and session control, Tekelec creates highly efficient platforms for managing media and delivering network solutions. Corporate headquarters are located near Research Triangle Park in Morrisville, N.C., U.S.A., with research and development facilities and sales offices throughout the world.

About GENBAND

GENBAND is a leading supplier of IP multimedia application and infrastructure products and solutions for a diverse set of VoIP and IMS networks worldwide. These IMS-ready applications and solutions enable wireline, cable and wireless service providers to rapidly deploy new multimedia services, while providing a foundation to transition legacy networks to next generation networks. Headquartered in Plano, Texas, GENBAND has research and development facilities in Austin and Plano, Texas; and New Delhi, India. Additional information is available at www.genband.com.

Contacts:
Frederick Reynolds
GENBAND Inc.
+1.972.521.5830
Frederick.Reynolds@genband.com