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VocalTec and Lucent IP Telephony Platforms First To Interoperate ITXC - First to Deploy and Support Interoperable Multi-Vendor Network

Announced at SUPERCOMM98 in Atlanta, Georgia and Voice on the Net Europe ’98 in Oslo, Norway.

For Release: June 8, 1998, HERZLIYA, ISRAEL, MURRAY HILL, NEW JERSEY, and NORTH BRUNSWICK, NEW JERSEY -- In a move that market analysts say will advance the IP telephony industry a giant leap forward, VocalTec Communications Ltd. (Nasdaq: VOCLF), Lucent Technologies, and ITXC Corp. today announced plans to develop full interoperability between IP telephony platforms from VocalTec and Lucent. ITXC will be the first carrier to operate a fully interoperable IP telephony network using VocalTec’s and Lucent’s products.

"Lack of vendor interoperability has remained one of the single most serious impediments to the IP telephony industry," said Hillary Mine, senior vice president at Probe Research. "ITXC, Lucent, and VocalTec are moving the industry forward to the next level by implementing true gateway and gatekeeper interoperability. ITXC faces immediate and real demand for solutions that are functional today. At the same time, no service provider wants to be locked into a single vendor. Lucent and VocalTec will enable ITXC to meet its customers’ longer term requirements by offering not only vendor choice today, but also future-proofed interoperability on next generation networks."

In response to customer demands for interoperability, VocalTec, Lucent, and ITXC will develop complete interoperability between the Lucent PacketStar™ Internet Telephony Server for Service Providers (ITS-SP) and the VocalTec Ensemble Architecture™. This solution will address voice communications, fax, communications, routing, authorization, authentication, accounting, billing, network management and settlement services. Under the first phase of this plan, the companies expect to deliver interoperable VocalTec and Lucent gateways running on ITXC’s commercial WWeXchangeSM Service in Fall 1998.

"As a customer of Lucent and VocalTec, ITXC spearheaded this effort by two leading providers of Internet telephony products because interoperability is essential to our own customers," said Tom Evslin, chairman of ITXC Corp. "Until now these resellers, carriers, Internet service providers (ISPs), and other Internet telephony service providers have had the unsatisfactory choice of either being restricted to a single vendor with no possibility of second sourcing or running products from multiple vendors in parallel, incompatible networks. We will provide true multi-vendor interoperability in our WWeXchange network so that our customers will be the first to benefit from this expanded choice."

"For the IP telephony market to grow, interoperability between leading manufacturer’s products is a must. For this purpose, VocalTec is taking the lead with Lucent to bring to market IP telephony network solutions that offer seamless interoperability," said Dr. Elon Ganor, CEO and chairman at VocalTec Communications. "Our collaboration is a testament to the strong commitment that both of our organizations have not only to the H.323 standard but also to the fundamental importance of playing an active role on the standards-setting bodies. Interoperability is an important step forward for the IP telephony industry and for VocalTec as it affirms and enhances our role in driving this industry forward."

"After many trials and pilots, the commercial availability of interoperable products is a critical next step in the maturity of IP telephony," said Karyn Mashima, vice president of Lucent Data Networking Systems. "Now, we are providing customers a way to bring isolated IP telephony solutions together over a single interoperable global network."'

"I am very excited to see two competing vendors working together to advance interoperability," said Francois-Eric de Repentigny, industry analyst at Frost & Sullivan. "This could be the signal the rest of the industry was waiting for, the beginning of a chain reaction."

ITXC supports on its WWeXchange Service the VocalTec Ensemble Architecture and today announced that support of Lucent’s Packet Star ITS-SP is also currently available.

About VocalTec Communications:

VocalTec Communications software enables audio, video, data, text and collaborative communications between personal computers and other devices over the Internet. VocalTec is a leader in developing innovative, open standards products that bridge the Internet and the traditional public switched telephone network (PSTN) and drive the convergence of computing and telephone technologies. VocalTec owns a minority equity interest in ITXC. More information about VocalTec Communications, headquartered in Herzliya, Israel, is available on its Web site at For more information on the VocalTec Ensemble Architecture, please visit

About Lucent Technologies:

Lucent Technologies designs, builds and delivers a wide range of public and private networks, communications systems and software, data networking systems, business telephone systems and microelectronics components. Bell Labs is the research and development arm for the company. More information about Lucent Technologies, headquartered in Murray Hill, NJ, is available on its Web site at For more information on Lucent's PacketStar ITS-SP, please visit

About ITXC Corp.:

ITXC Corp was started in 1997 by Tom Evslin, founder and former VP in charge of AT&T WorldNetSM Service. A privately-held company, whose name stands for Internet Telephony eXchange Carrier, ITXC provides wholesale services to the new Internet telephony industry. Its first service, WWeXchangeSM began operation in April of 1998 and provides network monitoring, routing, authorization, and settlement for IP phone calls. By connecting the networks of Internet telephony service providers worldwide, ITXC provides IP connectivity to all of the United States and many major cities overseas as well as combined IP-PSTN service to every phone in the world. For more information, please see our web site at

Editors Note:

ITXC trademark language

PacketStar™ is a registered trademark of Lucent Technologies.

VocalTec¨ and VocalTec Ensemble Architecture™ are trademarks or registered trademarks of VocalTec Communications Ltd.

Certain statements contained in this release, may contain forward-looking information with respect to plans, projections or future performance of VocalTec Communications the occurrence of which involves certain risks and uncertainties, including, but not limited to, product and market acceptance risks, the impact of competitive pricing, competitive products, product development, commercialization and technological difficulties and other risks detailed in the Company’s reports filed from time to time with the Securities and Exchange Commission.

For more information contact:

Marty Querzoli/Theresa Edo
VocalTec Communications Ltd. / LNS Communications

Stephen Loudermilk
Lucent Technologies

Armando Diana
ITXC Corp.