PITTSBURGH--(BUSINESS WIRE)--Oct. 11, 2004--Laurel Networks, Inc.,
today announced the introduction of several new miniPHY (physical
interface) access cards for its ST50(TM) 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(TM) 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.