Celtro Selects Metaswitch MPLS and IP Routing for Mobile Backhaul

Metaswitch MPLS and IP Routing Enhances Celtro's Mobile Backhaul Solution set

LONDON, January 11 - Metaswitch Networks, the world's leading independent provider
of network protocol software (www.metaswitch.com/network-protocols/),
today announced that Celtro, a leading supplier of mobile backhaul access
switches, has selected Metaswitch's MPLS (www.metaswitch.com/mpls/)
and IP Routing (www.metaswitch.com/ip-routing-unicast/) network
protocol software products for Celtro's DynaMate product family.

The use of Metaswitch's IP/MPLS network protocol software
products enables Celtro's solutions to support advanced IP/MPLS network
capabilities, while offering smooth migration for mobile backhaul networks
from ATM to IP/MPLS.

"Our mobile operators customers are looking for maximum
flexibility in their backhaul networks" said Shahar Gorodeisky, Celtro's CTO.
"As they migrate from ATM to IP/MPLS, they want the ability to run all those
technologies in parallel, with the same SLA, and the same features. It allows
these operators to use Celtro's unique technologies such as virtual bonding,
HSPA services classification, and traffic optimization but over an MPLS
transport network. Metaswitch's MPLS network protocol software helps us to
achieve this goal."

"Mobile backhaul is a major application for our network
protocol software," said Clive Partridge, General Manager of Metaswitch's
Network Protocols Division. "So we are very happy to be working with Celtro
to help them support standards-based, interoperable MPLS and IP Routing on
their very successful mobile backhaul switches."

Metaswitch has developed portable network protocol source code
based on its N-BASE portability technology for over 25 years. The company's
industry leading MPLS and IP Routing solutions, which include unicast
(www.metaswitch.com/ip-routing-unicast/) and multicast (
www.metaswitch.com/multicast/) protocols, are architected to handle
the scale and reliability requirements of the most demanding applications
while providing the extensibility and full feature set to support IP VPNs,
QoS, traffic engineering, and optical control plane function. The portability
and robustness of the N-BASE protocol products, plus superb engineering and
exceptional support, provide telecommunications equipment manufacturers with
an unrivaled technical solution that reduces engineering cost and greatly
improves time to market.

About Metaswitch Networks

Metaswitch Networks is a leading provider of carrier systems
and software solutions that are powering the migration of communications
networks to open, packet-based architectures. Hundreds of network operators
worldwide depend on its Carrier Systems Division for reliable, scalable
session control, media gateway and application/feature server solutions to
enable compelling revenue-generating services. Its Network Protocols Division
develops high performance, portable software components that are integrated
into the products of the world's leading communications equipment
manufacturers. For more information, please visit www.metaswitch.com.

About Celtro

Experts in the mobile backhaul, Celtro provides innovative
switching solutions that empower mobile operators worldwide to improve
service delivery, increase network efficiency, and facilitate flexible
backhaul network evolution.

Celtro's patented technologies combine multi-service TDM, ATM,
Ethernet and IP/MPLS backhaul traffic switching to enable risk-free,
all-in-one-box migration from ATM networks, through HSDPA offload, to an
all-IP backhaul network.

Leveraging creative solutions that keep our customers one step
ahead in the mobile broadband revolution, Celtro's field-proven switching
solutions are commercially deployed by top tier operators worldwide,
currently serving over 350 million subscribers. For more information, please
visit www.celtro.com.

Copyright (c) 2009 Metaswitch Networks. "Metaswitch" is a registered
trademark. Brands and products referenced herein are the trademarks or
registered trademarks of their respective holders.

    Contact:
    Tori Downes
    Network Protocol Division,
    Metaswitch Networks
    +1(510)748-8230
    td@metaswitch.com

    Contact
    Shlomit Niva Tevet
    Marketing Director
    Celtro Ltd.
    +972-3-9206545
    Shlomit.Tevet@celtro.com

Contact: Tori Downes, Network Protocol Division, Metaswitch Networks, +1(510)748-8230, td at metaswitch.com; Contact: Shlomit Niva Tevet, Marketing Director, Celtro Ltd., +972-3-9206545, Shlomit.Tevet at celtro.com