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BETHPAGE, N.Y., July 31, 2008 -- Cablevision Systems Corp., (NYSE: CVC) today announced that its award-winning Optimum Voice digital voice-over-cable service this week surpassed 2 million phone lines in service - the latest milestone for a product that has attracted more than a third of the homes passed by Cablevision's fiber optic network and a growing base of business customers as well, as it has continued to win accolades for quality and reliability. Just this week, Optimum Voice was named the top voice over IP service for the fourth year in a row in PC Magazine's annual Readers' Survey, while winning a fourth straight Readers' Choice Award. Optimum Voice also received the highest rating in residential telephone customer satisfaction in the Mid-Atlantic region for 2007 in a study by J.D. Power and Associates.

"The response by residential and small business customers alike to the value, reliability and advanced features of Optimum Voice has been extraordinary," said Joe Varello, Cablevision's vice president of digital voice product management. "We want to thank our customers for helping us achieve this latest milestone - more than two million phone lines in operation across our service area - as Optimum Voice continues to win high praise and accolades, redefining expectations of how good a voice service can be."

Cablevision offers small and medium-sized business customers up to 12 lines of Optimum Voice, up to four lines for residential customers, all without the contracts or hidden add-on fees that are common among old-line phone companies. Every line includes unlimited flat-rate calling across the U.S., Canada and Puerto Rico, with a full suite of advanced calling features included at no additional charge, including call waiting, caller ID, enhanced voicemail, call forwarding and directory assistance.

Optimum Voice is available exclusively to Optimum Online® high-speed Internet customers. The service includes unlimited calling across the U.S., Canada and Puerto Rico, and a superior array of advanced features like enhanced voicemail, call waiting, caller ID, caller ID blocking (*67), call return (*69), three-way calling and call forwarding, free directory assistance (411), VIP ringing, find me, caller ID on call waiting, busy redial, anonymous calling and anonymous call blocking - all at no additional cost. The service's "My Optimum Voice" web portal allows customers to easily activate account features, listen to voicemail messages through any Web browser, review and sort calling history and manage other settings.

Unlike "Internet phone services," Optimum Voice provides the security of enhanced 911 access for every customer and provides a local number portability option, so new customers who switch from other telephone companies can keep their existing phone number. Optimum Voice service is carried over Cablevision's fiber optic network, not the public Internet, and offers customers a highly reliable voice service with superior value.

For customers who make international calls, Cablevision offers an innovative flat-rate international calling plan, Optimum Voice World Call, giving customers up to 250 minutes per month of calling anywhere in the world from their Optimum Voice phone, including up to 30 minutes of calls to Cuba, for a flat monthly fee of $19.95, delivering more value to customers than any other international calling plan.

About Cablevision
Cablevision Systems Corporation (NYSE: CVC) is one of the nation's leading media and entertainment companies. Its cable television operations serve more than 3 million households in the New York metropolitan area. The company's advanced telecommunications offerings include its iO TV® digital television, Optimum Online® high-speed Internet, Optimum Voice® digital voice-over-cable, and its Optimum Lightpath integrated business communications services. Cablevision operates several successful programming businesses, including AMC, IFC, Sundance Channel and WE tv, through Rainbow Media Holdings LLC, and serves the New York area as publisher of Newsday and other niche publications through Newsday LLC. In addition to these businesses, Cablevision owns Madison Square Garden and its sports teams, the New York Knicks, Rangers and Liberty. The company also operates New York's famed Radio City Music Hall, the Beacon Theatre, and the Chicago Theatre, and owns and operates Clearview Cinemas.

Disclaimer: Cablevision's Optimum Voice received the highest numerical score among telephone service providers in the Mid-Atlantic Region in the proprietary J.D. Power and Associates 2007 Residential Regional Telephone Customer Satisfaction Studysm. Study based on 11,911 total responses from consumers measuring 6 providers in the Mid-Atlantic region (DE, MD, NJ, PA, VA, WV) and measures satisfaction of consumers who received their local and long distance service from one provider. Proprietary study results are based on experiences and perceptions of consumers surveyed between April-May 2007. Your experiences may vary. Visit

Jim Maiella
(516) 803-3947