Press Release

Laurel Introduces New Interface Cards for the ST50 Service Edge Router

New miniPHYs Optimized for Delivering VoIP and IP VPN Services over DSL and T1/E1 Circuits

October 11, 2004 - Pittsburgh, PA - Laurel Networks, Inc., today announced the introduction of several new miniPHY (physical interface) access cards for its ST50™ Service Edge Router. The new miniPHY cards add T1/E1, DS-3 and 10/100 TX Ethernet access interfaces to the ST50 platform, enabling the delivery of new services such as VoIP (Voice over IP), IP VPNs and broadband Internet access through IP DSLAMs (Digital Subscriber Line Access Multiplexers), ATM DSLAMs and traditional T1 or E1 circuits. The cards expand the existing ST50 miniPHY family, which includes AnyService AnyPort SONET/SDH and Gigabit Ethernet interfaces.

Three new cards are included in the release: an 8-port channelized T1/E1 miniPHY, a 4-port DS-3 miniPHY and an 8-port 10/100 TX Ethernet miniPHY.

· The 8-port channelized T1/E1 card provides NxDS-0, T1/E1 and NxT1/E1 interfaces with Frame Relay and PPP encapsulations and integrated support for reliable low jitter, low latency VoIP transport.

· The 4-port clear channel DS-3 card supports Laurel's AnyService AnyPort technology, including ATM for direct termination of ATM-based DSLAMs for delivery of commercial and residential VoIP, video, IP VPN and Internet services over DSL.

· The 8-port 10/100 TX Ethernet card provides Ethernet interfaces for growing metro Ethernet services such as VPLS (virtual private LAN service) and IP DSLAM termination with the QoS required for VoIP, video, IP VPNs and Internet services.

"The introduction of this latest set of interface cards leverages the miniPHY architecture of the ST50 Service Edge Router to enable a variety of new applications including VoIP and video transport over current and future DSL networks," said Steve Vogelsang, VP of marketing and co-founder of Laurel Networks. "Laurel's proven service flexibility combined with our ever-increasing interface granularity makes the ST50 ideal for carriers seeking a low entry cost with the flexibility to add services and subscribers as needed."

Availability

ST50 8-port channelized T1/E1, 4-port DS-3 and 8-port 10/100 TX cards can be ordered in November 2004, for delivery in January 2005.

About the ST50 Service Edge Router

The ST50 is a high-performance, modular carrier-class service edge router with the granularity required by emerging carriers and small to medium-sized carrier sites. Utilizing the same field-proven technology as the Laurel ST200™ Service Edge Router, the ST50 combines Internet-class routing, complete multi-service support, broadband subscriber management and integrated service management while adding miniPHY cards with enhanced levels of interface granularity.

About Laurel Networks

Laurel Networks service edge routers combine Internet class routing, Layer 2 switching and broadband subscriber management with the sophisticated QoS, high availability and integrated management needed to deliver advanced services with non-stop performance. Service providers worldwide have chosen the ST-series platform to profitably deliver next-generation high-growth business and consumer services including value-added Internet, VPNs, switched services, Voice over IP, Video on Demand and advanced broadband. For more information, visit www.laurelnetworks.com.