JERICHO, NY, April 16, 2008 - Optimum Lightpath^SM, an industry leader in providing advanced Ethernet-based communications services, today announced that Xand Corporation, a facilities-based provider of Data Center infrastructure and business continuity solutions to financial services and mid-sized corporations, has expanded its relationship with Optimum Lightpath, enabling Xand to offer uninterrupted delivery of robust Internet performance, availability and security to the hundreds of customers that Xand serves through its state-of-the-art 30,000 sq. ft. Westchester County Data Center facility.

Xand is one of a number of leading Data Centers in the New York metropolitan area that have chosen Optimum Lightpath's Intelligent Enterprise Network to support their business. Optimum Lightpath's services enable these companies to confidently provide a range of critical business services to their clients, including business continuity/disaster recovery, production Data Center outsourcing and Internet application hosting solutions all delivered over a highly intelligent, reliable and secure network.

The newly installed service at Xand will provide additional capacity, redundancy and resiliency to the hundreds of customers that Xand serves throughout the New York metropolitan area.

"As a provider of critical operations for several financial services firms, working with Optimum Lightpath guarantees us the type of high bandwidth - low latency communications we need to keep our clients on plan with their business continuity initiatives," says Seth Oestreicher, Chief Operating Officer at Xand.

Many Xand customers operate in highly regulated industries, such as financial services. With zero tolerance for downtime, these organizations require extremely reliable mission-critical Data Center services. In addition, a host of state and industry regulators are now urging, and in some cases requiring, the development of business continuity plans to ensure the backup, protection and recovery of data on a long-term basis.

"In today's competitive marketplace, business continuity is vital to business survival - particularly in industries such as financial services, where companies are facing ever-increasing pressures from competitors, customers and regulators," said Dave Pistacchio, Executive Vice President and General Manager, Optimum Lightpath. "Xand is providing companies with a reliable, cost-effective business continuity solution, and we're pleased to be providing them the connectivity they need to reach customers with their services. Additionally, Xand is providing Optimum Lightpath's customers with access to a world-class data center 30 miles outside of New York City."

"The reliability of our network is critical to our business and to the businesses of our customers," said Jim Kramer, Vice President of Sales for Xand Corporation. "Through expanding our service with Optimum Lightpath, we are able to offer our customers guaranteed reliability. We are also able to provide diversity to the businesses that we serve who use Optimum Lightpath as their primary provider of carrier-class Ethernet services."

Optimum Lightpath's carrier Ethernet service is helping to increase productivity, streamline operations and lower telecommunications costs for enterprise customers across the New York metropolitan area, resulting in high customer satisfaction, specifically among financial institutions and major corporations using its services.

Businesses interested in learning more about Optimum Lightpath's Metro Ethernet services can visit http://www.optimumlightpath.com or call 1-877-LIGHTPATH.

About Optimum Lightpath
Optimum Lightpath, a division of Cablevision Systems Corporation (NYSE: CVC), and an industry leader in providing advanced Ethernet-based data, Internet, voice, video transport solutions and managed services over its Intelligent Enterprise Network, uses the power of its reliable and resilient fully fiber optic network to deliver these solutions to businesses throughout the New York metropolitan area. Since its formation almost 20 years ago, Optimum Lightpath has built an advanced fiber-to-the-business-premises network extending more than 2,750 route miles throughout the tri-state area with more than 2,500 fiber-lit buildings. As a result of owning and maintaining this state-of-the-art network, Optimum Lightpath is able to reliably provide scalable, high-capacity IP-based Metro Ethernet services that support high bandwidth data, Internet, voice and video applications that dramatically improve the enterprise customer's quality of experience.

Optimum Lightpath has been recognized for 10 straight years by the New York State Public Service Commission for delivering highly personalized customer service superior to the competition. This year, the Company was named 2008 Frost & Sullivan North American Ethernet Service Emerging Company of the Year. In 2007, Optimum Lightpath was named Heavy Reading's North American Ethernet Service Provider of the Year for Regional Innovation and named Best North American Regional Service Provider of the Year by the Metro Ethernet Forum (MEF). Optimum Lightpath was one of the first service providers in the world and the only North American MSO to earn Carrier Ethernet certification from the MEF. For more information, visit www.optimumlightpath.com.

About Cablevision
Cablevision Systems Corporation is one of the nation's leading entertainment and telecommunications 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's Rainbow Media Holdings LLC operates several successful programming businesses, including AMC, IFC, WE tv and other national and regional networks. In addition to its telecommunications and programming 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, and owns and operates Clearview Cinemas.