CUSTOMER SUPPORT

Press Release

Ceterus Networks announced an agreement with Lucent Technologies to provide support services for the ever-growing base of Universal Transport System products deployed in North America

Allen, TX, May 24, 2005

Ceterus Networks, a provider of flexible transport solutions, today announced an agreement with Lucent Technologies (NYSE: LU) to provide support services for the ever-growing base of Universal Transport System products deployed in North America. The agreement with Lucent will enable Ceterus customers, both enterprises and service providers, to get mission-critical service and support for their Universal Transport System products. Lucent Worldwide Services (LWS) will provide round-the-clock On- Site Technical Support and materials logistics capabilities to all Ceterus customers in North America.

“Our products enable carriers to offer new, Ethernet–based enterprise services over TDM circuits and rapid response remains a requirement,” said Dave Stehlin, President and CEO of Ceterus Networks. “Lucent will allow us to complement our expanding line of transport products with the service and support our customers require.”

About Ceterus Networks

Ceterus Networks provides flexible transport solutions that enable Ethernet as well as legacy service delivery to any location, over copper or fiber. By transforming existing wireline and wireless networks to carry flexible packet-based Ethernet as well as TDM services, Ceterus products enable providers and enterprises to deliver these high-bandwidth, high-QoS managed services to every location, while minimizing access cost and capital expense. Ceterus Networks is a privately-held company founded in 2001 and headquartered in Allen, Texas. For more information, visit the company's web site at www.ceterus.com.

Contacts:

Tony Katsulos
Jetstream PR for Ceterus Networks
972.788.9456, ext. 301
katsulos@jetstreampr.com

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