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Dialogic IMG Integrated Media Gateways Now Support More Services in More Types of Networks

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May 19, 2009

Dialogic IMG Integrated Media Gateways Now Support More Services in More Types of Networks

By Richard Grigonis, Executive Editor, IP Communications Group


The IMG 1010 had its origins at what was Excel Switching (News - Alert) in Hyannis, Massachusetts. The IMG 1010 was Excel’s core VoIP media gateway product line, unique at the time in its ability to serve as an SS7 signaling server and media gateway with media processing capability – all in a little 1U “pizza box” that could be easily racked and stacked. The IMG 1010 soon picked up an RFC 3261-compliant SIP stack allowing the device to operate as a User Agent in next-gen Voice over Broadband, IP Centrex, and SIP wholesale scenarios.

 
In October 2005, Excel Switching’s parent EAS Group acquired Brooktrout Technology, itself known at the time for its TR2500 scalable board-based gateway platform. Then, in 2007, Dialogic Corporation acquired the EAS Group and its subsidiaries, Cantata Technology (News - Alert), Inc., Excel, Brooktrout Technology and SnowShore Networks.
 
By that time, the newly-renamed Dialogic (News - Alert) IMG 1010 Integrated Media Gateway included integrated SS7 ISUP signaling which could be mapped to SIP, SIP-T or H.323 to meet any carrier’s requirements for SS7 connectivity into a VoIP network. It became known as a versatile box that could do signaling conversion between TDM-IP, IP-IP or TDM-TDM network configurations, and could translate among multiple signaling protocols in its role as a carrier media gateway, including SS7 ISUP, ISDN PRI and CAS for circuit networks and SIP, SIP-T and H.323 for IP networks.
 
And now, Parsippany, New Jersey-based Dialogic has taken their line of IMG Integrated Media Gateways to a new level, announcing an impressive new suite of availability and service-enabling features. The IMGs have recently been extended to act as a multimedia border element with capabilities such as SIP mediation, topology hiding and media transcoding.
 
The new Dialogic IMG System Software Release 10.5.2 takes the already robust multimedia border element functions of the IMG Gateways and expands them to include new SIP mediation capabilities. In addition to support for SIP-to-SIP translations, the high density IMGs now offer SIP-to-SIP-I and SIP-to-SIP-T interworking. This helps carriers to satisfy their increasing needs for connectivity between networks that use incompatible SIP variants as is often the case between wireless and wireline networks.
 
Despite the many improvements in the IMGs and the recent introduction of IMG System Software Release 10.5.2, the IMGs continue to offer a remarkably compact 1U gateway footprint, coupled with resiliency features that are expected in a carrier environment. New capabilities designed to help improve service availability include support for a graceful upgrade procedure in SS7 networks and N+1 redundancy for DS3 links across multiple gateways. These features can help service providers keep their revenue-generating VoIP infrastructure and applications up and running with fewer interruptions while enjoying the advantage of a space-efficient configuration.
 
Moreover, the ability of the IMGs to integrate with leading third-party load-balancing technology should help service providers further enhance application availability and business continuity. Carriers should particularly find interesting the prospect of running the powerful combination of Radware’s (News - Alert) AppDirector traffic redirection/SIP load balancing switch technology and Dialogic’s IMG Gateways to create a highly scalable solution for leading-edge SIP applications which can include transcoding for voice, fax, and tones.
 
Also with Release 10.5.2, Dialogic has extended the versatile “any-to-any” network connectivity of the IMGs by adding new signaling and service layers. Carriers can use the newly introduced SIGTRAN M3UA to enable subscribers on circuit-based networks to connect to next generation enhanced services. For unified communications applications, revenue-generating services such as Message Waiting can now be supported with the incorporation of Transaction Capability Application Part (TCAP) in the Dialogic® IMG 1010 Integrated Media Gateway.
 
In addition, support for clear channel codecs now allows service providers to backhaul clear channel video and data over IP networks, so they can connect between 3G video handset users and video enabled network services.
 
For more, be sure to check out the Mobile Video channel on TMCnet.
 

Richard Grigonis is Executive Editor of TMC (News - Alert)�s IP Communications Group. To read more of Richard’s articles, please visit his columnist page.

Edited by Stefania Viscusi







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