Net2Phone Announces Interoperability Support for ARRIS Cable Telephony Equipment and Solutions
Enables multiple cable operators to seamlessly call between cable networks and traditional phone systems

Newark, NJ - Dec 4, 2002 - Net2Phone (NASDAQ: NTOP), the leading provider of Voice over IP (VoIP) services, today announced full interoperable support of ARRIS' (NASDAQ: ARRS) head end and residential cable equipment for its hosted VoIP solution for cable operators worldwide.

By simultaneously supporting multiple companies' equipment, Net2Phone can support cable operators that currently use ARRIS' Cable Modem Terminating System (CMTS) and cable modem/eMTAs (Multimedia Terminal Adapters). Additionally, Net2Phone is demonstrating its ability to integrate and operate other key network elements including Net2Phone's value added network monitoring, billing and operations support systems.

"ARRIS is very pleased that our Cadant C4 CMTS and Touchstone Telephony Modems have been integrated into Net2Phone's unique offer to the cable industry," said Stan Brovont, VP Marketing ARRIS Broadband. "The integration achieved by ARRIS and Net2Phone engineers is a key milestone in demonstrating to the operators that PacketCable based VoIP is maturing rapidly and is ready to deploy now."

"By developing the technology to bridge two of the leading cable head-end equipment manufacturers on a single platform, Net2Phone is catalyzing the concept of a fully-interoperable IP telecommunications infrastructure," said Michael Pastor, Vice President of Net2Phone's Cable Technology Division. "Our partners in cable telephony are clearly headed in the right direction through continued support of standards-based telephony, enabling consumers and businesses around the world to communicate both on-net and off-net."

End-to-end network interoperability, demonstrated live at the Broadband Plus show in Anaheim, CA this week, facilitates universal Voice over IP calling. The solution provides any combination of on-net and off-net calling between multiple vendors' equipment. The booth has a fully functional, production-ready system that demonstrates Net2Phone's commitment to solving MSOs interoperability and network integration concerns. All calls are managed via Net2Phone's Cable Voice Platform and CVOSS (Cable Voice Operations Support System), Net2Phone's back-office monitoring and management system, providing a shared interface between the cable MSO's local access network and the public switched telephone network.

Net2Phone's Cable Technology Division provides cable operators worldwide with a fully integrated and hosted telecommunications solution utilizing DOCSIS^TM certified or qualified VoIP technologies. By leveraging a distributed architecture of software and equipment combined with a cost-effective service offering, Net2Phone enables cable operators to sell their own telephony solution to their customers utilizing their existing high-speed data network at low incremental costs.

ABOUT NET2PHONE
Founded in 1995, Net2Phone is a leading provider of voice services over IP networks to consumers, businesses and carriers worldwide. With millions of users around the world, Net2Phone enables toll-quality calls between computers, telephones, and broadband devices utilizing IP networks. Recognized as the first company to bridge the Internet with the public switched telephone network, Net2Phone has routed billions of minutes of traffic over its award-winning network. Incorporated within the Company is its Cable Technologies Division, which has developed a fully outsourced standards-compliant telephony solution for cable operators, using components from companies such as Arris, Motorola, Gallery iPT, Mind CTI, Nuera and CoreOS. Traded on the NASDAQ under the symbol NTOP, Net2Phone's strategic partners and investors include Liberty Media Corporation (NYSE: LMC.A; LMC.B), AT&T (NYSE: T), and IDT Corporation (NYSE: IDT; IDT.B). For more information about Net2Phone's products and services, please visit www.net2phone.com.

ABOUT ARRIS
ARRIS provides broadband local access networks with innovative optical transport, high-speed data and telephony systems for the delivery of voice, video and data to the home and business. ARRIS complete solutions enhance the reliability and value of converged services from the network to the subscriber. Headquartered in Duluth, Georgia, USA, ARRIS has design, engineering, manufacturing, distribution, service and sales office locations throughout the world. Information about ARRIS products and services can be found at www.arrisi.com.

This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These forward- looking statements involve risks and uncertainties and actual results could differ materially from those discussed in the forward-looking statements. For this purpose, any statements contained in this press release that are not statements of historical fact may be deemed to be forward-looking statements. Factors which may affect the Company's results include, but are not limited to, the Company's ability to expand its customer base, the Company's ability to develop additional and leverage its existing distribution channels for its products and solutions, dependence on strategic and channel partners including their ability to distribute the Company's products and meet or renew their financial commitments, the Company's ability to address international markets, the effectiveness of the Company's sales and marketing activities, the acceptance of the Company's products in the marketplace, the timing and scope of deployments of the Company's products by customers, fluctuations in customer sales cycles, customers' ability to obtain additional funding, technical difficulties with respect to the Company's products or products in development, the need for ongoing product development in an environment of rapid technological change, the emergence of new competitors in the marketplace, the Company's ability to compete successfully against established competitors with greater resources, the uncertainty of future governmental regulation, the Company's ability to manage growth, obtain patent protection, and obtain additional funds, general economic conditions and other risks discussed in this Report and in the Company's other filings with the Securities and Exchange Commission. All forward-looking statements and risk factors included in this document are made as of the date hereof, based on information available to the Company as of the date thereof, and the Company assumes no obligation to update any forward-looking statement or risk factors.