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The Importance of Interoperability Testing in the SIP Trunking Model

SIP Trunking Featured Article

April 03, 2013


The Importance of Interoperability Testing in the SIP Trunking Model


By Tracey E. Schelmetic
TMCnet Contributor

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SIP trunking, a VoIP and streaming media service based on the Session Initiation Protocol (News - Alert) (SIP), is seeing its star rise in the world of telecom. As more Internet telephony service providers (ITSP) deliver telephone services and unified communications to customers equipped with SIP-based private branch exchange (IP-PBX (News - Alert)) and unified communications facilities, these providers are finding benefits in both cost savings and technological maneuverability.


Research group Infonetics (News - Alert) recently forecasted that by 2015, enterprise customers will purchase more SIP trunks than legacy T1 lines.

TMCnet recently spoke with Dave Martin, vice president of marketing for Santa Clara-based Edgewater Networks (News - Alert), which develops products that ensure the secure and reliable delivery of IP-based voice and video for service providers and enterprises. The company’s solutions offer network and operational savings from the customer premises to the core of the network, and it, too, is seeing rising interest in SIP trunking.

“SIP trunking has just been a general growth area for us,” said Martin. “There are some very compelling reasons for enterprises to adopt this kind of cloud service.”

These include not only increased flexibility, but cost savings as well.  Studies have found that over half of SIP users save somewhere between 25 and 50 percent, with an average of 33 percent over traditional PRI (primary rate interface) trunk models, which lack the easy growth ability and flexibility of SIP trunking.

According to Martin, SIP trunking presents great opportunities for service providers to grow their revenue.

In the interview, which took place at IT Expo Miami last month, Martin offered some opinions about the state-of-the-industry in SIP trunking, and said one of the most important services Edgewater offers is interoperability testing, one of the major challenges to switching to SIP trunking models.

QuickConnect, an interoperability program and certification service introduced by Edgewater in the fourth quarter of last year, is offered to service providers looking to take advantage of the opportunities in SIP trunking. Edgewater has over 20 PBXs in-house in the company’s lab, and it put the service provider’s infrastructure through an exhaustive testing process to make certain that when they go to market, they don’t run into any installation problems.

“SIP is a wonderful framework, but not a guarantee of interoperability, so as a result, you really need to do the testing and certification up front,” said Martin.

To see the full interview from ITEXPO (News - Alert) with Dave Martin, see the video above.




Edited by Braden Becker

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