The SIP Forum Offers New Recommendations for Interoperability

SIP resellers and agents, especially those that work with, don’t need to be telephony gurus or understand all of the innerworkings of the SIP network. Provisioning new clients is interworkings online control panel and administration is as simple as a few clicks and some minor configuration. That’s why most of our blog posts are about the business side of selling SIP and the benefits for you and your clients.

Today, however, we thought it would be helpful to share a bit about what is going on behind the scenes in the industry. The one thing that is certain about any type of complex technology is that things are changing all of the time. In the case of SIP trunking, there are experts working to ensure that the industry evolves harmoniously in a way that benefits everyone and meets the needs of customers long into the future.

The SIP Forum

The SIP Forum is an industry association made up of representatives from the top IP communications companies. It aims to advance the adoption and interoperability of SIP-based IP communications products and services. They believe that SIP is the right approach for controlling real-time multimedia communications sessions over the internet, corporate networks, and wireless networks. The Forum provides information on the benefits and features of SIP and works to achieve high levels of product interoperability.

SIPconnect Technical Recommendation – Version 2.0

On January 24, 2017, the SIP Forum announced the ratification of Version 2.0 of the SIPconnect Technical Recommendation, which won unanimous approval of the Forum’s Board of Directors. The recommendation, which is an addition to Version 1.1 was crafted by the Forum’s SIPconnect Task Group. The original version, which was adopted in 2011, addressed basic issues like network registration, identity management, and call origins and terminations. The new recommendations includes a more extensive set of guidelines that address interoperability between SIP-enabled IP-PBXs and service provider networks. It takes on issues including security, emergency calling location, IPv6, and early media.

“Because of the SIP Forum’s consensus-oriented approach to developing technical specifications, this updated SIPconnect recommendation drew a wide swath of participation from leading companies in the IP communications industry, In addition, the effort greatly benefitted from the involvement of International participants,” said Marc Robins, President and Managing Director of the SIP Forum. “These participants have been very active in the SIPconnect 2.0 Task Group effort, and submitted comments, suggested edits and other useful information as the work progressed. The SIP Forum also owes a debt of gratitude for the work and commitment to the project from Spencer Dawkins, who served as the SIPconnect 2.0 Task Group Chair and as SIP Forum Technical Director, and to Andrew Hutton, Unify and to Gonzalo Salgueiro, Cisco Systems, for serving as the primary document editors.”

Why Does it Matter?

Phone calls throughout the world are currently routed through the Public Switched Telephone Network (PSTN), but it’s days are numbered. The equipment that makes up the PSTN is aging rapidly and becoming more and more difficult and expensive to maintain. SIP is the dominant standard for transmitting voice calls over the internet. Business and residential customers alike are moving from legacy wired phone lines to SIP trunks at a very fast pace. We will see an all-IP infrastructure in the near future.

According to Spencer Dawkins, President at Wonder Hamster Internetworking LLC, SIP Forum Technical Director and Chair of the SIPconnect 2.0 Task Group, “SIPconnect 2.0 reflects implementation and deployment experience beyond SIPconnect 1.1, and provides a solid basis for SIP trunking that removes the last technical reasons to delay TDM replacement.”

Andrew Hutton, Head of Standardization at Unify, a SIP Forum Director and co-editor of SIPconnect 2.0, agrees, “SIPconnect is the only Open Standards-based SIP Trunking specification in use internationally. Its continued evolution is an important part of the digital transformation of both enterprise and voice service providers as we retire the legacy PSTN infrastructure and transition to All-IP”.

If you are interested in the details, you can download the full text of the recommendation.


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