STOCKHOLM and PARSIPPANY, New Jersey, May 26 /PRNewswire/ --

- Interoperable Solution Enables Secure SIP Trunking for Legacy PBX and
Contact Center Environments

Ingate(R) Systems, which develops firewall technology and products that
enable trusted Unified Communications, and Dialogic Corporation ("Dialogic"),
a global provider of world-class products and technologies for multimedia and
signal processing, today announced that they have completed the necessary
testing to validate the Dialogic(R) 2000 Media Gateway Series (DMG2000) as
interoperable with Ingate SIParator(R) and Ingate Firewall(R) products. The
combination of a DMG2000 gateway and an Ingate SIParator or Ingate Firewall
will allow enterprises utilizing legacy PBX and Contact Center systems to
easily and securely adopt SIP trunks as a replacement for traditional PSTN
voice services.

SIP trunking has emerged as one of the hottest voice service solutions in
the business communications market since the divestiture of AT&T in the
1980's, and the ensuing long distance service competition. Both enterprise
class and small to mid-sized business (SMB) customers are eager to adopt VoIP
service as a means to reduce voice service costs, particularly in the current
economic environment. Adopting SIP trunking service puts business customers
in a position to benefit from both lower costs and the multimedia
capabilities of the SIP protocol to extend their communications between
business partners beyond basic voice in the future.

"To date, most SIP trunking providers and resellers have focused on the
opportunity to migrate SMB class customers from PSTN service in concert with
an upgrade to a SIP-ready IP-PBX system. While this opportunity focus remains
logical and compelling, there is also a significant opportunity to migrate
Enterprise class customers who maintain legacy (non-SIP) PBX and contact
center systems" stated Steve Johnson, President of Ingate Systems. "The
combined security features of the Ingate SIParator with the SIP to PBX trunk
conversion capability of a DMG2000 gateway enable a cost effective, secure
and reliable SIP trunk interface for these customers."

SIP trunks are delivered to business customers over broadband IP data
networks. With this interoperability solution, both Ingate and Dialogic
products are deployed on the customer premises to support the SIP trunking
service. The Ingate products are deployed at the network edge between a wide
area IP network and the corporate LAN, securely passing SIP signaling and
VoIP media streams to and from the corporate LAN. The Dialogic gateway
resides on the corporate LAN and is connected to the legacy PBX or contact
center via traditional T1/E1 trunk ports. The DMG2000 gateway passes the SIP
Trunk signaling and media from the Ingate SIParator to the PBX by emulating
traditional PSTN trunk services.

"We are very pleased to announce this interoperability with Ingate
today," states Franz-Josef Eberle, General Manager, Dialogic Enterprise
Gateway Product Group. "Ingate is a recognized leader in securing SIP
trunking for business customers, which comprise a critical piece that can be
overlooked by some device vendors. We believe this solution set truly opens
up a whole new Enterprise market opportunity for SIP Trunking providers and
their resellers."

The two companies will deliver a free educational webinar, Coming of Age:
SIP Trunking for Secure Enterprise Deployments on Tuesday June 16th at 1:00
pm eastern time. Registration is open for the event, and industry
participants as well as IT professionals are invited to attend.

About Dialogic Corporation

Dialogic Corporation is a leading provider of world-class, innovative
technologies based on open standards that enable innovative mobile, video,
IP, and TDM solutions for Network Service Providers and Enterprise
Communication Networks. Dialogic's customers and partners rely on its
leading-edge, flexible components to rapidly deploy value-added solutions
around the world.

Headquartered in Montreal, Canada, Dialogic and its subsidiaries have
over twenty offices worldwide, providing local presence, knowledge and
support to serve its customers around the globe. Dialogic's research and
development centers are located in Parsippany, New Jersey; Getzville, New
York; Needham, Massachusetts; Hyannis, Massachusetts; Salem, New Hampshire;
Chicago, Illinois; Fordingbridge, England; and Renningen, Germany as well as
Montreal.

Information about Dialogic is available at www.dialogic.com.

Dialogic is a registered trademark of Dialogic. Other trademarks
mentioned herein belong to their respective owners. Dialogic encourages all
users of its products to procure all necessary intellectual property licenses
required to implement their concepts or applications, which licenses may vary
from country to country.

About Ingate(R) Systems

Ingate(R) Systems develops firewall technology and products that enable,
manage and secure Unified Communications. With a history rooted in security,
Ingate offers enterprises, carriers and IP-PBXs elegant solutions that make
trusted SIP communications possible. Ingate's full suite of solutions helps
customers leverage the full potential of SIP-based applications. They include
award-winning Ingate Firewall(R) and Ingate SIParator(R) products; SIP trunk
products that simplify and secure these deployments; and remote connectivity
solutions that extend the benefits of Unified Communications to workers
outside the LAN. Ingate currently protects the networks of retail companies,
financial institutions, industrial firms, government agencies and
small-to-large enterprises throughout Europe, Asia and North America.

A leading educator on SIP trunking, Ingate hosts the SIP Trunk Seminar
Series at the ITEXPO and the Ingate SIP Trunking Network at www.siptrunk.org.
Both bring together industry visionaries to generate awareness for the
benefits of SIP, SIP trunks and Unified Communications.

Ingate Systems AB is headquartered in Sweden with offices in Stockholm
and Linkoping. Its U.S. headquarters are located in Hollis, New Hampshire.
For more information on Ingate Systems, visit www.ingate.com.