Press Release

Laurel Networks Showcases MPLS Carrier Services in Multi-vendor Interoperability Demonstration

Pittsburgh, PA - May 22, 2003 — Laurel Networks, Inc., the first provider of high-performance service edge routers, today announced successful participation in the MPLS/Frame Relay Alliance Interoperability Demonstration. Conducted among 12 member companies at the University of New Hampshire's Interoperability Laboratory (UNH-IOL) May 7-15, the event will be followed by a live multi-vendor demonstration at SUPERCOMM 2003. Laurel showcased MPLS carrier services including ATM, Frame Relay and Ethernet Layer 2 VPNs as well as IP VPNs on its award-winning ST200™ Service Edge Router.

"Laurel is a clear innovator in the development of MPLS-based service offerings. In 2001, we shipped the industry's first multi-service over MPLS solution to enable interworking between ATM, Frame Relay and Ethernet-connected sites and today offer the most scalable MPLS IP VPN solution," said Steve Vogelsang, Laurel Networks co-founder and vice president of marketing. "This latest event highlights the increasing adoption of MPLS-based services as carriers evolve to a common packet infrastructure."

About the MPLS/Frame Relay Alliance Interoperability Demonstration
The MPLS/Frame Relay Alliance will be conducting the first live public multi-vendor interoperability demonstration of Frame Relay, ATM and Ethernet Virtual Private LAN Services (VPLS) over MPLS at SUPERCOMM 2003 in booth #10315, Hall C. Alliance members will also demonstrate multi-vendor interoperability of Fast Re-Route (FRR), Layer 2 point-to-point Ethernet Services and Layer 3 RFC 2547bis VPN operation. The Alliance is an international industry organization that is advancing the recognition and acceptance of MPLS and Frame Relay technologies in the global telecom industry. Additional information about the Alliance and the demonstration is available online at http://www.mplsforum.org or http://www.frforum.com.

About the ST200 Service Edge Router
The flagship product of Laurel Networks, the ST200 Service Edge Router is the only router designed from the ground up with the features required at the edge of a service provider IP/MPLS backbone. The ST200 combines Internet-class routing, complete multi-service support, integrated service management and unprecedented architecture flexibility to support current and evolving service provider requirements - all at wire speed.

About Laurel Networks
Laurel Networks is leading the creation of The New Service Delivery Architecture to enable profitable delivery of data and IP services at the edge of carrier IP/MPLS networks. Laurel's service edge routers and service management software are evolving carrier architectures from multiple data networks to a single packet-switched architecture with minimal capital investment. Combining carrier-class routing, data switching, advanced QoS and high availability, Laurel service edge routers support both routed and switched services. This unmatched service agility allows carriers to evolve their service portfolio to meet changing market requirements. Laurel Networks was founded in 1999 and is headquartered in Pittsburgh, Pennsylvania. For more information, visit www.laurelnetworks.com.