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Endeavor Telecom Announces Residential and SOHO Installation Services for Vonage Customers

Installation and Testing Services can Add Convenience and Simplicity to Vonage Service for Residential and Small Business Customers

September 13, 2006 – Boston, MA – Fall 2006 VON - Endeavor Telecom, the leading provider of private label wholesale professional services to carriers, service providers, VARs, and equipment manufacturers, today announced, that it is providing Vonage America Inc., a subsidiary of Vonage Holdings Corp. (NYSE: VG), a leading broadband telephone company with a professional installation program for residential and SOHO customers, in 39 cities throughout the United States.

The newly available Vonage professional installation program, performed by Endeavor, extends the Vonage service to every traditional telephone in a residential and SOHO environment. While the Vonage device is easy for a consumer to self-install, Endeavor’s experienced installers can provide the installation service, at the customer’s request. The Vonage/Endeavor installation program will help consumers to realize hassle-free cost-savings on every phone in their home or small office. The cost of the installation starts at $99.95, and also includes professional testing and quality control services.

“Endeavor increases Vonage’s value proposition by giving customers a convenient alternative to self-installation. We understand that some people just don’t want the hassle, nor do they have the time to install Vonage themselves. For those customers who are intimidated by new technologies, professional installation makes the switch to Vonage easy by giving people a hassle-free way to get Vonage set-up in your home or small office,” said Mike Snyder, CEO of Vonage Holdings Corp. “Over the last six months, we’ve witnessed Endeavor’s expertise throughout a successful pilot program, and now through ongoing deployments. Endeavor’s comprehensive installations help to ensure a smooth transition to our service.”

“Vonage is the country’s best-known VoIP brand - and we’re thrilled to play a role in improving the customer experience,” said Justin McLain, executive vice president of Endeavor Telecom. “We share many of the same core values - technical expertise and unprecedented customer service - and we’re honored to align our business with a leader like Vonage.”

About Endeavor Telecom
Headquartered in Atlanta, GA, Endeavor Telecom is the leading provider of private label wholesale professional services to carriers, service providers, systems integrators, VARs, and equipment manufacturers. Endeavor's portfolio of services includes: 24x7 Field Services, such as inside wiring & equipment installation; Order Fulfillment Logistics, such as equipment configuration, staging, testing, and shipping; and Operations Support, which includes Tier I & II technical support.

Endeavor employs more than 350 direct field engineers and more than 9,000 independent and partner-subcontractors throughout the US, Canada, and Mexico. For additional information, please visit Endeavor Telecom on the web at http://www.endeavortelecom.com.

About Vonage
Vonage Holdings Corp. (NYSE: VG) is a leading provider of broadband telephone services with over 2 million subscriber lines. Our award-winning technology enables anyone to make and receive phone calls with a touch tone telephone almost anywhere a broadband Internet connection is available. We offer feature-rich and cost-effective communication services that offer users an experience similar to traditional telephone services.

Our premium calling plans offer consumers unlimited local and long distance calling, and popular features like call waiting, call forwarding and voicemail - for one low, flat monthly rate. Vonage's service is sold on the web and through national retailers including Best Buy, Circuit City, Wal-Mart Stores Inc. and Target and is available to customers in the U.S., Canada and the United Kingdom. For more information about Vonage’s products and services, please visit www.vonage.com.

Vonage Holdings Corp. is headquartered in Holmdel, New Jersey. Vonage® is a registered trademark of Vonage Marketing Inc., a subsidiary of Vonage Holdings Corp.

This press release contains forward-looking statements relating to our relationship with Endeavor Telecom. In addition, statements in this press release that are not historical facts or information may be forward-looking statements. The forward-looking statements in this release are based on information available at the time the statements are made and/or management's belief as of that time with respect to future events and involve risks and uncertainties that could cause actual results and outcomes to be materially different. Important factors that could cause such differences include, but are not limited to, our history of net operating losses and our need for cash to finance our growth; the competition we face; our dependence on our customers' existing broadband connections; differences between our service and traditional phone services, including our 911 service; uncertainties relating to regulation of VoIP services; system disruptions or flaws in our technology; our ability to manage our growth; the risk that VoIP does not gain broader acceptance; and other factors described in the “Risk Factors” section of our Quarterly Report on Form 10-Q for the period ended June 30, 2006, and in our subsequent periodic reports filed with the SEC. While we may elect to update forward-looking statements at some point in the future, we specifically disclaim any obligation to do so, and therefore, you should not rely on these forward-looking statements as representing our views as of any date subsequent to today.

For more information contact:

Todd Keefe Endeavor Telecom 617.262.1968 tkeefe@endeavortelecom.com

Mitchell Slepian Vonage 732.528.2677 mslepian@vonage.com