RADCOM's Multiple Access Protocol over SONET/SDH -- MAPOS -- Support Certified by NTT.

Business Editors/High-Tech Writers

MAHWAH, N.J.--(BUSINESS WIRE)--April 25, 2000

Collaboration with NTT yields support of MAPOS by RADCOM's

WireSpeed(TM) Analyzer

RADCOM Ltd. (NASDAQ: RDCM), a leading network test and quality management solutions provider, today announced support of Multiple Access Protocol over SONET/SDH (MAPOS), based on the new protocol suite developed by Nippon Telegraph and Telephone Corporation (NYSE: NTT).

"RADCOM's PoS WireSpeed is one of the best analyzers on the market that natively supports the MAPOS protocol suite. Its line rate capture and generation capacity blew lots of other test equipment away," said Mr. Ken Murakami, senior research scientist, NTT network innovation laboratories. "In addition, it plays an integral role in the debugging of MAPOS PCI NICs, tuning up forward throughput of MAPOS switches. We appreciate RADCOM's collaborative work on MAPOS implementation and its superior performance," concluded Mr. Murakami.

The NTT group is a world leader in the communications market and is one of the world's largest telecom providers. RADCOM's WireSpeed offers both carriers and developers a solution to their oc-12/STM-4 full line rate capture, analysis, statistics and generation requirements. An easy to use and intuitive interface, coupled with 7-layer protocol support, enables fast and efficient pinpointing and troubleshooting of network problems.

"Excellent hardware capabilities are not enough," said Mr. Doron Elinav, Product Manager, RADCOM Ltd. "IP over SONET and SDH architectures are becoming increasingly more common, and adding MAPOS support considerably extends RADCOM's coverage of protocols in the telecommunications market. Our collaboration with NTT is part of RADCOM's strategy to increase our penetration of the Japanese market and specifically, the service provider market," concludes Mr. Elinav.

MAPOS-A New Protocol for Scalable and High-Speed Internetworking

The MAPOS protocol, defined in RFC 2171-6, provides multiple access capability over SONET/SDH. It has the scalability of SONET/SDH and also provides a seamless network environment. Supporting multicasts, MAPOS is also well-suited for IP traffic. An efficient and simple forwarding mechanism makes it an excellent solution for high-speed networking at all networking levels: SONET LAN, SONET campus backbone, SONET Internet backbone, and Internet exchange using SONET WAN. MAPOS supports a wide range of line rates from 155 Mbps to 10 Gbps, with the potential for higher rates in the future.

About RADCOM 

RADCOM is a leading network test and quality monitoring equipment manufacturer focused on convergence technologies. The company specializes in the design, manufacture, marketing and support of a line of high-quality, integrated, multitechnology test and quality monitoring solutions for LANs, WANs and ATM. RADCOM offers unique convergence testing solutions for VoIP and cellular converged networks. RADCOM's test and analysis equipment is used in the development and manufacturing of network equipment, the installation of networks, and the ongoing maintenance of operational networks to facilitate real-time identification, diagnosis, isolation and resolution of network problems. RADCOM's sales network includes over 55 distributors in 45 countries worldwide and over 14 manufacturer's representatives across North America.

RADCOM's customers include Cisco, Lucent, AT&T, MCI Worldcom, Sprint, British Telecom, Deutsche Telecom, Ericsson, Motorola, and Telstra.

Investors should take note that certain statements in this press release are forward-looking and may not give full weight to all of the potential risks (e.g., product demand and market acceptance, rapid changes in technology, the impact of competitive products, the challenge of managing expenses to changing revenue resulting from changed product demand, the difficulty of the timely completion of restructuring and changed priorities from these and other factors). For more information on risk factors, please refer to RADCOM's SEC filings, including RADCOM's most recent SEC filings on Form 20F and Form 6-K.