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Actively Participating in the Telephony and Pre-Paid Calling Card Industries

Telmex USA Selects PhoenixSoft for Network Expansion

PhoenixSoft’s CMS platform added to serve growing Telmex customer base

Phoenix, Arizona...January 31, 2006...PhoenixSoft, Inc., a provider of telephony solutions for converged networks, announced today that Telmex has chosen to add a CMS platform to keep pace with rapid customer growth.

Telmex currently houses a PhoenixSoft CMS call processing platform in its Miramar, Florida headquarters location. With the growth of its pre-paid business in both the U.S. and Mexico, the company will now add an additional PhoenixSoft CMS platform to accommodate its expanding pre-paid market.

"We are extremely pleased to help Telmex meet its growing network and customer demands,” said Paul Amick, PhoenixSoft’s co-founder. “Our relationship spans many years and we are proud to provide applications to one of the world’s leading telecommunications companies.”

PhoenixSoft’s CMS call processing platform enables service providers like Telmex to offer any basic or enhanced telephony service to any customer, anywhere in the world. Some of these services include:

• TDM and/or VoIP Applications

• Traditional Switching and/or Next-Gen Softswitch Support

• Pre-Paid and Post-Paid Calling Card Accounts

• 1+ Accounts

• International Gateway Applications

• One Number Calling

• Callback Services

• Web-Based Administration

• Comprehensive Reporting

• Real-Time Billing

• Voice Mail

About Telmex USA
Headquartered in Miramar, Florida, Telmex USA is a wholly owned subsidiary of Telmex (NYSE: TMX), which owns and operates the largest and most advanced communications network in Mexico. Telmex USA has served the U.S. Hispanic market since 1997 with a wide range of pre- and post-paid calling services. For more information, visit http://www.telmexusa.com.

About PhoenixSoft
Founded in 1985, PhoenixSoft develops and deploys a full range of telephony solutions for converged networks. The company provides enhanced switching, client/server-based convergent billing, voice applications such as conferencing and voice mail, and gateway solutions. As a pioneer in next-generation networks and technologies, PhoenixSoft delivers end-to-end, flexible solutions to a wide variety of customers, including small-, medium- and large-sized service providers, carriers and businesses. For more information, visit http://www.phoenixsoft.com.

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