Ditech Wins Oi Deal

MOUNTAIN VIEW, Calif. -- Ditech Networks Corporation (Nasdaq: DITC - News) today announced that Oi, a leading mobile telecommunications company in Brazil, has selected its Quad Voice Processor (QVP) platform with Ditech's flagship Voice Quality Assurance (VQA(TM)) software for delivering ultra-clear voice quality across its GSM mobile network. The Ditech platform will enable Oi to significantly improve users' calling experience while increasing network capacity. For Ditech, Oi represents an important addition to a rapidly growing list of GSM mobile operators that are using its solutions to improve call quality and maximize network capacity.

"We chose Ditech Networks as our voice quality partner because of its unique VQA technology, which enables us to successfully meet two critical challenges," said Mr. Antonio Parrini Pimenta, Network Director of Oi. "Ensuring high voice quality is essential to building customer loyalty. At the same time, we must be able to scale network capacity without compromising quality. The Ditech VQA solution enables us to meet our customers' expectations for excellent call quality and build on that loyalty to attract new customers -- while minimizing infrastructure changes and capital expenditures."

"We are pleased that Oi has selected our VQA solution to enhance voice quality in its mobile network," said Tim Montgomery, president and CEO of Ditech Networks. "Exceptional voice quality is one of the keys to higher customer satisfaction. VQA will enable Oi to cost-effectively deliver outstanding wireless service throughout Brazil."

Ditech Networks Inc. (Nasdaq: DITC)