Ditech Networks Provides Intelligent Codec Deployment While Optimizing Voice Quality

    Ditech's purpose-built transcoding supports carrier voice services and
    increased customer satisfaction

    MOUNTAIN VIEW, Calif., June 18 /CNW/ -- Ditech Networks, Inc.
(Nasdaq:   DITC), a leader in the development of voice processing solutions for
communications networks, today announced that its innovative Packet Voice
Processor(TM) supports more codecs worldwide than any other comparable
platform. When coupled with Ditech's award-winning voice quality solution,
VoIP service providers now can deploy and support a diverse set of codecs
while optimizing voice quality.
    Service providers rely on speech compression to manage the tradeoff
between network capacity and voice quality.  Supporting all the deployed
codecs on core voice equipment such as media servers, conferencing servers, or
voice portals, is complex and costly. Ditech's codec transcoding, combined
with the company's voice quality measurement and assurance solutions, gives
service providers the ability to intelligently deploy codecs to optimize the
end-to-end customer experience.
    "Carriers are facing increasing codec proliferation, as specific voice
codecs have been developed for wireline VoIP, and wireless networks, with the
intention of packing more calls into the same amount of bandwidth," said
Stephane Teral, Principal Analyst, Service Provider VoIP, IMS and FMC.  "The
rapid growth of VoIP and fixed-mobile convergence means transcoding large
volumes of traffic from one codec to another is becoming more important to
ensure global connectivity. Additionally, the importance of transcoding will
be increasing as it is part of the Media Resource Function in the IMS
    Ditech's Packet Voice Processor supports transcoding and speech
processing at the border of the network, as well as in the network's core.
When deployed at the border, Ditech's Packet Voice Processor can convert
almost any kind of codec deployed on access or peering links to a commonly
used codec that supports the core network. This protects the core network from
a proliferation of codecs, and makes the deployment of additional core voice
services less costly.
    "The codec transcoding capabilities integrated with Ditech's Packet Voice
Processor solution offer service providers an efficient, dependable way of
creating a consistent call experience," said Todd Simpson, Vice President of
Marketing for Ditech Networks.  "With our own large, diverse library of codecs
and our core voice measurement and assurance solutions, we enable carriers to
make cost-effective choices in how to extend high-quality voice services to
    Ditech's Packet Voice Processor supports a comprehensive range of codecs,
including G.711, G.721, G.722, G.722.1, G.722.2 (GSM-AMR WB), G.723.1, G.726,
G.727, G.728, G.729a, G.729b/ab, G.729e/g, Speex, iLBC (Internet Low Bit Rate
Codec), iSAC (Internet Speech Audio Codec), GSM-HR (Half Rate), GSM-FR (Full
Rate), GSM-EFR (Enhanced), EVRC (Enhanced Variable Rate Codec), SMV

    (Selectable Mode Vocoder), 4GV (Fourth Generation Vocoder), AMBE, BV16/32
    Please visit Ditech's booth at the NXTcomm show, No.4819, June 19-21 in
Chicago, Illinois, to hear a demonstration of Ditech's products.

    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.

    Forward Looking Statement

    This press release contains forward-looking statements regarding Ditech
Networks' expectations of the performance of its network monitoring, analysis
and reporting technology. Actual results could differ materially as a result
of unanticipated factors and events, including the risk that Ditech Networks'
network monitoring, analysis and reporting technology may exhibit unforeseen
technical problems that will preclude its use in certain networks, as well as
those detailed in the "Future Growth and Operating Results Subject to Risk" in
Part I, Item 2 of Ditech Networks' Quarterly Report on Form 10-Q for the
quarter ended January 31, 2007 (filed March 12, 2007 with the Securities and
Exchange Commission).

For further information:

For further information: Press Contact: Rob Adler of PR@vantage, 
+1-415-984-1970, radler@pr-vantage.com, for Ditech Networks, Inc.; Investor 
Contact: Bill Tamblyn of Ditech Networks, Inc., +1-650-623-1309 Web Site:

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