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press release

PrimaCom Deploys OpVista's Optical Transport System to Expand Network Capacity for Bandwidth-Intensive Services

Mainz, Germany and Milpitas, CA, April 29, 2008 — OpVista, Inc., a leading manufacturer of metro and regional optical transport solutions and the cable network provider PrimaCom today announced that PrimaCom AG has deployed a DWDM metro optical network in Saxonia, Germany based on the OpVista2000 Optical Transport System. An additional metro optical network, also based on the OpVista2000, will be installed in Thuringia by the end of May 2008.

PrimaCom selected the OpVista2000 Optical Transport System for its innovative architecture optimized for digital video transport, as well as its patented Microwave Photonics technology for high bandwidth services on existing optical networks with incremental capacity expansion on a wavelength-by-wavelength basis.

The OpVista2000's widely-deployed Microwave Photonics technology uses densely-packed multiple optical carriers for the highest capacity on existing networks without costly re-engineering. With Microwave Photonics technology, OpVista2000 can deliver deployment cost savings of up to 50% compared to conventional DWDM equipment

"The OpVista2000 Optical Transport System gives us the bandwidth we need, now and in the future, to meet the rapidly increasing demands for advanced video, Internet and telephone services from our subscribers," said Markus Schmid, Chief Executive Officer of PrimaCom AG.

"OpVista is pleased to be working with a forward-looking operator such as PrimaCom," said Karl F. May, President and CEO of OpVista. "Their innovative vision of packages of triple-play subscriber services is among the most advanced in Europe, and OpVista will help PrimaCom meet their service objectives by cost-effectively providing the rapidly growing metro optical network bandwidth they need."

About OpVista

OpVista provides optical networking products to worldwide telecommunications and cable operators for the industry's highest-capacity metro and regional networks. The OpVista portfolio utilizes patented Microwave Photonics technology to provide high bandwidth capacity over existing fiber infrastructure, eliminating the need for expensive network redesign and allowing operators to offer new services cost-effectively. OpVista is based in Milpitas, CA. For further Information, visit: www.opvista.com/

About PrimaCom AG

PrimaCom (www.primacom.de) offers a wide range of analogue, digital and interactive broadband services. Customers, connected to the upgraded 862 MHz networks, have access to more than 170 TV and radio programs, high-speed Internet and telephone services PrimaCom currently passes 1.2 million homes and serves 1.0 million subscribers. The stocks of PrimaCom AG are being traded at the Frankfurt stock exchange (ISIN: DE0006259104 / WKN: 625910, Xetra icon: "PRC.ETR").

OpVista Media Contacts

Mike Newsom
508.541.9036

Constantine Theodoropulos
617.292.7319

PrimaCom AG

Press officer
Thomas Chojnacki
508.541.9036

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