Ditech Networks Completes IMS Readiness Tests at IMS Forum's Inaugural Plugfest


Ditech Voice Quality Expertise Supports Successful Week of Interoperability Testing

MOUNTAIN VIEW, Calif., Jan. 26 -- Ditech Networks, Inc. (NASDAQ:DITC), a leader in the development of voice processing solutions for communications networks, announced today that it completed extensive tests at the IMS Forum's inaugural Plugfest event. Ditech demonstrated the interoperability of its Packet Voice Processor (PVP(TM)) voice processing platform with other participants in a series of tests designed to validate the interoperability of a number of key IMS network elements. The event, held January 15-19 at the University of New Hampshire' InterOperability Lab in Durham, N.H., brought together leading vendors in the VoIP IMS space.

"The IMS Plugfest was an important industry event that successfully tested several multi-vendor IMS core topologies and solidified IMS as a key part of network evolution," said Tim Montgomery, president and CEO of Ditech Networks. "As IMS network architectures and applications mature, Ditech Networks will continue to expand the advanced voice processing and network border capabilities of the PVP and ensure interoperability with key IMS elements."

"The IMS Plugfest held by the IMS Forum between January 15-19 demonstrated the ease of IMS interoperability. Ditech participation in the Plugfest allowed us to test and enhance the quality of voice over IP functionality in a multi- vendor, multi-network environment, said Manuel Vexler, Member of the Board of Directors of the IMS Forum. "We are looking forward to having Ditech taking part in the development and execution of the next IMS Plugfest event, to be scheduled at the end of second quarter."

About IMS Forum

The IMS Forum(TM) is a global, non-profit industry association devoted to interoperable IP Multimedia Subsystems services and solutions. Its mission is to accelerate the adoption of IMS through discussion and resolution of interoperability issues, and the development of standards-based IMS services residing in the IMS application layer. The IMS Forum(TM) provides consultancy to industry service providers and vendors on best practices and approaches for IMS rollouts and interconnectivity. The IMS Plugfest(TM) facilitates the industry-wide certification of applications and services interoperability. More information is available at www.imsforum.org

About Ditech Networks

Ditech Networks supplies voice processing equipment for telecommunication networks around the world. Ditech Networks' solutions incorporate advanced voice processing, Session Initiation Protocol (SIP), and security technologies delivered on carrier-grade scalable platforms to enhance the delivery of communications services over mobile, Voice over IP, and wireline networks. Ditech Networks' customers are premier network operators including Verizon Wireless, Sprint/Nextel, Orascom Telecom, and others that collectively serve more than 150 million subscribers. Ditech Networks is headquartered in Mountain View, California. For more information, visit www.ditechnetworks.com

Source: Ditech Networks, Inc.

CONTACT:

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Web site: www.ditechnetworks.com/

Web site: www.imsforum.org/

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