ZyXEL to Introduce IP DSLAM - IP Express at GITEX 2003

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An Efficient and Cost-effective Way to Deliver Broadband Service for Today and the Years Ahead
October 19, 2003

ZyXEL at Gitex 2003:
Boothno. K8-71, Hall 8

Dubai, October 19, 2003 -- ZyXEL Communications Co., (TSE: 2391) a leading broadband access solution provider, today announced that it will showcase its IP-based DSL Access Multiplexer (DSLAM) at ZyXEL's booth (Hall 8, K8-71) at GITEX 2003 in Dubai. ZyXEL IP DSLAM, the IP Express will offers service providers an efficient and cost-effective way for broadband service delivery.

ZyXEL's IP DSLAM, the IP Express, provides ADSL, G.shdsl and VDSL services in a single platform. The solution allows carriers and broadband service providers to offer broadest set of standards-based DSL services for both central office application and remote installation, ranging in speeds from 128 Kbps up to 16 Mbps with loop reach up to 18,000 feet (5.5km).

Using the existing infrastructure of copper wires, ZyXEL's IP DSLAM solution allows providers to start DSL service with minimum installation time and expenses. IP-based DSLAM provides a distinct advantage over typical ATM-based DSL access system, since IP is the most natural approach for data transmission and provides better bandwidth utilization, ease of use and low cost advantage. Especially in newly developed areas, the build-out of IP networks can be much more efficient than ATM infrastructure. ZyXEL's IP DSLAM series is the most cost-effective solution for service providers to generate large and profitable revenue quickly.

ZyXEL's IP DSLAMs 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.shdsl or ADSL Annex B 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 Annex B switch with a 1U rack height enclosure. Each enclosure is equipped with two 8-port G.shdsl/ADSL Annex B 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
Supporting high density DSL, the IES-3000 is a 16-slot ADSL/G.shdsl/VDSL DSLAM which supports high-speed data transmission up to 16 Mbps over single copper pair. It's 9U rack-mountable chassis is composed of 2 slot for management switch cards and 14 slots for DSL line cards. Each line card is equipped with up to 24 ADSL or 24 SHDSL ports, which provide up to 336 lines on one rack.

"ZyXEL's IP DSLAM solution minimizes the cost of ownership, provides better bandwidth utilization and ease-of-use competitive edge for new services that today's providers need," said Yuh-Lung Chen, V.P. of Central Office Equipment Business Unit at ZyXEL. "By eliminating the need of ATM infrastructure, the new solutions are expected to save potentially hundreds of thousands of dollars in initial infrastructure costs, while generating new revenue sources and reducing provisioning and operational expenses."

Availability
IES-1000/2000/3000 are available now. The IP DSLAM series can be purchased through ZyXEL's worldwide sales networks, including directly from the company and through the company's value-added distributor network. More information on ZyXEL IP DSLAM products, visit http://www.zyxel.com/

About ZyXEL Communications
ZyXEL Communications Co. (TSE:2391), located in Hsinchu, Taiwan, is one of the world's leading broadband access solution vendors. ZyXEL's broad line of Internet Protocol-based (IP) networking solutions includes access multiplexors, customer premise equipment, Internet security and Wireless LAN equipment, enabling high-performance network services for SOHO, small to mid-sized businesses and service providers. ZyXEL works closely with worldwide network equipment vendors, telecommunications companies, ISPs, and other major businesses. For more information, visit the company's Website at http://www.zyxel.com.