The Latest IP DSLAM from ZyXEL Strikes COMPUTEX TAIPEI 2002

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An Innovative and Cost-effective Broadband Service for Today and the Years Ahead
June 03, 2002

ZyXEL at COMPUTEX TAIPEI 2002:
Taipei World Trade Center
Booth: Hall 1, A612
Tel: +886-2-2723-1077

Taipei, June 3, 2002 -- ZyXEL Communications Co., (TAI: 2391.TW), a leading broadband access solution provider, today announced its new IP-based IES series DSL Access Multiplexer (DSLAM), the IES-1000/2000/3000, at COMPUTEX TAIPEI 2002 from June 3-7 in TWTC Hall, A612.

ZyXEL's IES series IP DSLAM provides ADSL, G.shdsl and VDSL services that enable carriers and broadband service providers to offer a variety standards-based DSL of services for both central office application and remote installation, speeds ranging from 128 Kbps to 16 Mbps with loop reach up to 18,000 feet (5.5km).

Using the existing infrastructure of copper wires, ZyXEL's IES series IP DSLAM solution allows service providers to set up DSL service with minimum installation expenses and efforts. IP-based DSLAM provides a distinct advantage compared to typical ATM-based DSL access system, since IP is the most natural approach for data transmission; providing better bandwidth utilization, simple manageability and low operating cost. Especially in newly developed areas, the build-out of IP networks is obviously much more efficient than ATM infrastructure.

ZyXEL's IES series IP DSLAM provides both port- and tag-based VLAN features, offering the benefits of security and performance. The Internet Group Management Protocol (IGMP) snooping feature optimizes bandwidth utilization for applications such as broadcast video. New mechanisms have also emerged to ensure Quality of Service (QoS). With a rich set of management features, the DSLAM can be easily managed by any SNMP manager or web browser.

IES-1000 IP-based Mini-DSLAM
The IES-1000 is a compact, dual-slot G.shdslADSL mini DSLAM which supports high-speed data transmission up to 2.3 Mbps over single copper pair. It features a 16-port G.shdsl/ADSL switch with a 1U rack height enclosure. Each enclosure is equipped with two 8-port G.shdsl/ADSL modules with hot-swappable capability. Its compactness is perfect for limited space in central office collocation or in-building installation. With 2.3 Mbps symmetric transmission characteristics over single loop, the IES-1000 is also applicable for leased-line replacement.

IES-2000 IP-based DSLAM
With higher port density design, the IES-2000 is an ideal solution for service providers to deliver full-range DSL services from their central offices. The IES-2000 is a 6-slot ADSL/G.shdsl/VDSL DSLAM which supports high-speed data transmission up to 16 Mbps over single copper pair. It's 4U rack-mountable chassis is composed of 1 slot for management switch card and 5 slots for DSL line cards. Each line card is equipped with up to 12 VDSL, 24 ADSL or 24 SHDSL ports, which provide up to 120 lines on one rack.

IES-3000 IP-based DSLAM
Using the same line cards as IES-2000, the IES-3000 is a 16-slot ADSL/G.shdsl/VDSL DSLAM which provide up to 336 lines on one rack. It's 9U rack-mountable chassis is composed of 2/1 slot for management switch cards and 14/15 slots for DSL line cards. Furthermore, the IES-3000 provides redundancy in power module, control module and protection in uplink connection that greatly improves system reliability. Both IES-2000 and 3000 provide fully hot-swappable design which ensures continuous operation of existing services when adding or removing modules.

The IES 2000 and 3000 give service providers a wide-range uplink alterative, including optical interfaces of 1000Base-SX,1000Base-LX and copper-based 10/100/1000Base-TX. The integration of IES-2000/3000 with existing copper wire infrastructure or newly installed fiber backbone becomes a much easier proposition than was available before.

"ZyXEL's IP DSLAM solution minimizes the cost of ownership, maximize incentive by providing excellent bandwidth utilization, manageability and reliability. ," said Yuh-Lung Chen, V.P. of the Central Office Equipment Business Unit at ZyXEL. "By eliminating the need of ATM infrastructure, the new solutions are estimated to save thousands (US dollars) ;thus accelerated paybacks will even out with the initial setup cost."

Availability & Warranty
The IES-1000 is now available, however the IES-2000 and 3000 are scheduled to be in the market in July. The IES series IP DSLAM series can be purchased through ZyXEL's worldwide sales networks, including buying directly from the company or through the value-added distributor network. To locate a convenient ZyXEL distributor, check out our web site at http://www.zyxel.com/where/index.htm. For more information on ZyXEL IP DSLAM products, visit us at http://www.zyxel.com/product/ipdslam/index.htm. All products come with a two-year materials and workmanship warranty and plus technical support ZyXEL offers on all its products

About ZyXEL Communications
ZyXEL Communications Co. (TAI:2391.TW), located in Hsinchu, Taiwan, is among the broadband access solution providers with edge-cutting technology. Products developed by ZyXEL over the years are not only consider advance in the present industry, but also consistently win acclaims and are favored by worldwide telecommunications companies, ISPs, and other major businesses. ZyXEL now serves Chunghwa Telecom (TAI:2412.TW), Deutsche Telekom, EarthLink (NASDAQ: ELNK), France Telecom (NYSE:FTE), Sprint, Telefonical, Telenor, Verizon (NYSE: VZ) and many others. For more information on ZyXEL Communications, visit our Website at http://www.zyxel.com.