ZyXEL Announces ES-3148 52-Port Layer 2+ Enterprise-Class Intelligent Ethernet Switch

Superior fault-tolerance platform with rigorous security control and intelligent traffic management to power Triple-Play applications

Hsinchu, January 12, 2006-- ZyXEL Communications (TSE: 2391), world's leading broadband access solutions provider, todayunveils its ZyXEL ES-3148 52-port L2+ intelligent Ethernet switch aiming for high-intense networks in enterprises or campuses. The new ES-3148 offers superior fault-tolerance and strict management over network access. Furthermore, intelligent traffic prioritizing benefits Triple-Play service quality significantly. For extremely stable network or hottest Triple-Play applications, like Data, VoIP and Video, ZyXEL ES-3148 can be your best choice for constructing premium network.

ZyXEL ES-3148 comes in a 19-inch, 1U-height rackmount design; featuring 48 standard 10/100Mbps RJ-45ports and up to four GbE uplink ports: two
dual-personality GbE interfaces (100/1000Mbps RJ-45 ports or SFP open slots) and two 100/1000Mbps RJ-45 ports capable of 17Gbps switching speed.

Combinedwith 802.3ad Link Aggregation, ZyXEL ES-3148 can improve transmission stability with expanded uplink bandwidth and increased data routes. It also supports 802.3w RSTP to resume broken connections through backup routes. In addition, ES-3148 also works in conjunction with ZyXEL BPS-120 back-up power system to ensure the network availability and reliability by preventing power outage caused by individual failures with dual power supplies.

On security, ZyXEL ES-3148 answers this hottest corporate networking topic with a multi-layered security structure ranged from Layer 1 to Layer 4. Aside from intelligent three-tiered (L2/L3/L4) ACL security access structure, ES-3148 particularly strengthens its protection to the network nodesby supporting MAC Freeze and MAC Filter features to formulate respective packet transfer policies according to the MAC address on each port. When cable-disconnection is detected, the Intrusion Lock feature will suspend network activities to prevent potential intrusion attacks. It also supports centralized port-based 802.1x user and device management, a maximum of 16K MAC addresses, up to 4K 802.1Qdynamicand 256 static VLAN to fortify the network security.

To facilitate the Triple-Play audio and video services, such as video conference, VoIP phone and Web cam that are becoming ubiquitous in enterprises and government agencies, ES-3148is equipped with three-tiered Layer 2 to Layer 4 (L2/L3/L4) ACL for traffic priority optimization, WFQ (Weighted Fair Queue), 8 Priority Queues per port, port-based rate limiting and higher priority to key services like voice to fully exploit the network performance and QoS.

ZyXEL ES-3148supports the ZyXEL-exclusive iStacking™intelligent management which automatically locates other iStacking-capable ZyXEL switches, and controls up to 24 such switches with one single IP. Administrators can freely choose from Weband Telnet management interfaces, and activate SSHv1/v2 or SSL/TLS encryption for safe connections. Through these advanced features, administrators can save a significant amount of effort building safe, efficient and blackout-free company networks. More information on ES-3148, please visit

ZyXEL ES-3148is currently available and can be ordered via ZyXEL's global sales networkof system integrators and value-added resellers. To find a ZyXEL distributor nearest your location, please visit http://www.zyxel.com/wherebuy/index.php.

About ZyXEL Communications
ZyXEL Communications Corp. (TSE: 2391), located in Hsinchu, Taiwan, is the world’s largest DSL router provider (Gartner, August 2005). 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.