Tdsoft and ZyXEL Partner to Deliver VoDSL Solutions for Next-Generation Integrated Access Devices

Successful Interoperability was Accomplished Between ZyXEL's Prestige IAD and Tdsoft's VoNGATETM Voice Access Gateway

Herzlia, Israel, and Hsinchu, Taiwan, March 12th , 2001 -- Tdsoft, a leading provider of Voice over Next Generation Access (VoNGA) solutions, and ZyXEL Communications Co., (TAI: 2391.TW) a pioneer manufacturer and supplier of DSL customer premise equipment (CPE), today announced successful interoperability between Tdsoft's VoNGATE(TM) Voice Access Gateway and ZyXEL's Prestige Integrate Access Device (IAD).

"The new integrated voice and broadband Internet access solutions will enable an cost-effective means for telecoms, competitive carriers and service providers to deliver multi-line local voice services and high-speed Internet access to small businesses over DSL-based Next Generation Access networks," said Tony Hsu, Vice President of CPE Business Unit at ZyXEL. "This successful partnership will add ZyXEL to the range of customer choices, and accelerate deployment of Voice over DSL (VoDSL) services throughout the worldwide market,"

"The partnership with ZyXEL further strengthens Tdsoft's goal to enrich its VoNGA partner program with key Next Generation Access and Integrated Access Device vendors creating new opportunities for incumbent and emerging carriers " says Eytan Gilboa, General Manager of Tdsoft Asia.

About ZyXEL Prestige Integrated Access Device (IAD)
ZyXEL's Prestige IAD is a next generation broadband access solution that employs fast, reliable and interoperable G.shdsl technology, to deliver fully integrated broadband voice and data services on four voice ports and data over a Symmetrical High Speed DSL (SHDSL) line.

Specially designed for small business and SOHO users to experience integrated quality voice services and high-speed data connections, ZyXEL's Prestige IAD line provides a symmetrical transmission data rate of up to 2.3Mbps as well as four integrated POTS or BRI ports. The voice lines allow connections for key systems, phone sets, fax machines, and modems, with transparent feature support for Caller ID, Call Waiting, and messaging features (depending on voice gateway's signal availability). Furthermore, the Prestige 788 family provides complete bridging and IP routing to support a wide range of applications for high-speed Internet and corporate access.

About Tdsoft's VoNGATE(TM)
Tdsoft's VoNGATE(TM) is a versatile voice access gateway enabling telephone companies, competitive carriers and service providers to provide high-quality voice services over a variety of broadband access technologies such as xDSL, cable and wireless. Being an open platform, VoNGATE(TM) is capable of supporting a combination of PSTN switch interfaces, access infrastructures and access technologies at the same time. VoNGATETM is the only commercial V5 gateway in the marketplace today. It supports:

* V5.2, GR-303, TR 008, CAS or proprietary voice switch interfaces
* Next Generation Access Networks based on Cable, xDSL or Broadband Wireless infrastructure
* ATM, IP and TDM access technologies

About Tdsoft Communications
Tdsoft designs, develops, markets, and sells Voice Access Gateways and Access Concentrators for the telecommunications industry. Tdsoft is known as the world leader in telecom products using V5 protocol, the predominant standard for the interface between access equipment and telecommunications voice switches.
Tdsoft open solutions enable service providers to add voice services over broadband access infrastructure (Cable, xDSL, and Wireless). Tdsoft products demonstrated interoperability with more than 50 access equipment vendors and 16 voice switches in 25 countries. Tdsoft's systems provide voice services to hundreds of thousands of subscribers.

Established in 1994 Tdsoft is a privately held company financially backed by leading US and international venture capital firms.

Tdsoft Ltd. is headquartered in Israel with offices in Dallas (Texas, USA), Germany, The Netherlands, Belgium, Spain, and Hong Kong. For more information, please consult the Tdsoft site at

About ZyXEL Communications
ZyXEL Communications Co. (TAI:2391.TW), located in Hsinchu, Taiwan, is a leading supplier of complete networking access solutions for Internet/Intranet/VPN/Extranet applications. Products developed by ZyXEL over the years are not only industry leaders, but consistently win acclaim and are selected by worldwide telecommunications companies, ISPs, and other major businesses. ZyXEL now serves Chunghwa Telecom, EarthLink (NASDAQ: ELNK), France Telecom (NYSE:FTE), Sprint, Telefonica Brazil, Telia, Verio (Nasdaq: VRIO), and Verizon (NYSE: VZ) . For more information on ZyXEL Communications, visit the company's Website at