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  • 25 SIP related internet drafts (IETF).
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The SIP Forum is an industry association with members from the leading IP communications companies. Its mission: To advance the adoption and interoperability of IP communications products and services based on SIP.

The Forum promotes SIP as the technology of choice for the control of real-time multimedia communication sessions throughout the Internet, corporate networks, and wireless networks.

The Forum directs technical activities aimed at achieving high levels of product interoperability, provides information on the benefits and capabilities of SIP, and highlights successful applications and deployments.

Each of our Working Groups and Task Groups has their own mailing list, many of which are open to individual, "Participant" members. Please feel free to join them, or to join the general "discussion" mailing list.

The SIP Forum is currently engaged in the following technical activities -- each of which has its own Task Group that includes a unique mailing list, chairperson(s) and group of contributors:

The Forum is open to individual "Participant" members, Academic/Institutional Members, and to corporate "Full Members". Individual "Participant" and Academic/Institutional membership is free.

To view our current Full Member Listing, click HERE. To view our Academic Member Listing, please click HERE.

You can find out more about membership here.

Need more information or logos? Visit our Press Room HERE.





SIP Forum Launches SIPconnect Certification Testing Program

We are proud to announce the launch of the SIPconnect Certification Testing Program, a unique certification testing program that includes a new certification test suite and test platform, as well as an associated “SIPconnect Certified” logo program that will serve as the official “seal of certification” for companies products and services that have successfully passed the certification test and officially achieved conformance with the SIPconnect specification.

The result of three years of planning and development, the new SIPconnect Certification Testing Program will be hosted by the UNH-IOL, a well-known independent, third-party laboratory dedicated to broad-based testing and standards conformance services for networking industries. The program will be available to IP communications equipment vendors, including IP-PBX and SBC vendors, and service providers who are offering SIP trunking services.

For more information, please read the full text of the official announcement or visit the SIPconnect Certification Program Overview webpage.





SIPNOC 2016 Registration Is Open!

SIPNOC 2016 is all set for June 21-23, 2016. Registration is open, and complete event information can be found on the official SIPNOC 2016 event webpage.

SIPNOC 2016 is the latest and sixth iteration of the Forum's highly successful "SIP Network Operators Conference". The SIPNOC conferences attract leading technical and operations personnel from the global carrier community and have earned high praise from attendees for their educational, non-commercial and technical content that focuses on the real-world challenges operators face when deploying SIP services in global IP networks. SIPNOC attendees include telecommunications providers, major backbone operators, interconnect and wholesale solution providers, ISPs, cable operators, wireless network operators as well as large enterprises deploying major SIP initiatives.

While the international carrier and service provider community is the lynch-pin of the SIPNOC conferences, industry stakeholders involved in major SIP initiatives such as network equipment vendors, government agency representatives, large enterprise network operators and academic research organizations are also encouraged to attend.

The three-day conference, which focuses on the challenges and opportunities related to the deployment of SIP-based services in global service provider networks, has attracted technical leadership from MSOs and carriers from North America, South America and Europe including ADP, Airespring, Allstream, AT&T, Armstrong Utilities, babyTel, Bandwidth.com, Bell Canada, Brighthouse Networks, British Telecom, Broadvox, CableOne, Cablevision, Cincinnati Bell, Cinchcast, Charter Communications, Cologix, Comcast, Consolidated Telecom, COX Communications, Deutsch Telecom, Global Crossing, iBasis, IDT, IntelliVerse, Level 3, Lumos Networks, MTS Allstream, Optimum Lightpath, One Access Networks, Orange, Purple Communications, Rogers, Socket Telecom, Sorenson Communications, Sprint, Swisscom, Telefonica, Telmex Time Warner Cable, TDS Telecom, Telefonica International Wholesale Services, XConnect Networks, XO Communications, Uni-tel, Verizon, Vonage, Voxbone, Vocalocity, WDT, and Ziggo.

In addition to carrier participants, past SIPNOCs have also attracted a myriad of SIP community stakeholders from vendors, governments and research organizations such as Amazon, AudioCodes, Avaya, Broadsoft, CableLabs, Cisco Systems, Commetrex, Dialogic Corporation, Edgewater Networks, Ericsson, Federal Communications Commission, GENBAND, Georgetown University, Huawei Technologies, Illinois Institute of Technology, ISOC, Metaswitch, Polycom, Oracle, Sangoma Technologies, Siemens, snom, Sonus Networks, Unify, and the US Dept of Transportation.

Topics explored at SIPNOC 2016 will include WebRTC, codec handling, SIP trunking design and deployment, the SIP Forum’s various technical initiatives, Fax over Internet protocol (FoIP) interworking, implementing SIP with IPv6, toll fraud detection and prevention, security best-practices, HD Voice deployment, testing methodologies, applications development, call routing and peering, troubleshooting and monitoring, emergency services, SIP market research findings, standards developments, important regulatory and policy developments, and more.

For more information, please visit the SIPNOC 2016 event webpage. To register, please visit www.regonline.com/sipnoc2016.

For those interested, the presentations from last year's SIPNOC 2015 are available for viewing and download.



SIP Forum 2015 Annual General Meeting Results

The SIP Forum 2015 General Meeting was held on Monday, 14 December 2015.

In the meeting, a review of the financial operations was conducted, as well as a review of the operational and technical activities that have occurred over the past 12 months since the last General Meeting. In addition, votes were cast for new board members and for one other voting issue.

For more information about the meeting, including the voting results, the full text of the 2015 Annual General Meeting Notice, and the presentations given during the meeting, please click HERE.





ATIS and SIP Forum Complete New IP-Based Network to Network Interface (NNI) Technical Specification

ATIS and the SIP Forum today announced completion of the first standardized IP-based network-to-network interconnection (NNI) with consensus across North American Service providers. This accomplishment enables a major objective identified in the United States National Broadband Plan, to ensure that all service connections between providers occur at the Internet Protocol (IP) level. It also helps the industry advance a major business objective of achieving the interconnection needed to reliably deliver a range of exciting new IP-based services. This work is the product of the ATIS/SIP Forum Joint Task Force, which is at the forefront of conducting an industry effort to evaluate the current state of IP-IP interconnection, identify problem areas, and provide detailed protocol-level specifications to advance solutions.

Two recently completed documents provide a detailed, protocol-level IP-NNI specification for one service – voice. From this initial profile, further specifications can more easily be developed. The two new ratified documents are (1) IP Interconnection Profile, which describes a reference architecture and specifications for both the protocol and media as it appears “on-the-wire” at interconnect points; and (2) IP Interconnection Routing Report, which documents mechanisms for identifying the preferred IP interconnection point for a given phone number.

Read the full text of the ATIS and SIP Forum IP-NNI Task Force announcement.

To access more information about the NNI Task Force and Charter, please note that you must first be registered as a SIP Forum Participant Member (Free) here: http://www.sipforum.org/component/option,com_advanced_registration/task,register/.

When completed, a subscription link to the NNI Task Force mailing list can be found on the NNI Task Force Charter webpage for those interested in joining the effort.





SIP Forum Announces the Launch of SIPconnect 2.0!

Work has begun on SIPconnect 2.0!

The new SIPconnect 2.0 task group will produce a SIP Forum SIPconnect 2.0 recommendation that defines a common set of implementation rules for implementers who desire to interface an IP PBX with a SIP-enabled service provider. The recommendation(s) will specify which standards must be supported, provide precise guidance in the areas where the standards leave multiple options, supplement functionality gaps in existing protocols, and identify a baseline set of features that should be common to an IP PBX to service provider interface.

SIPconnect 2.0 will support a variety of new applications and technologies, including IPV6 and IPV4/6 Dual Stack components within the reference architecture, secure media (SRTP), video-enabled devices, and emergency calling (NG911/NG112) and the transport of location information.

For more information about the new and updated SIPconnect 2.0 charter, please visit HERE.






SIPit 31 Results Now Available

SIPit 31 was held in Nice, France, September 29-October 3, 2014, and was hosted by ETSI.

For more information about the SIPit events, please visit www.sipit.net.




SIP Forum Reports Results From RTCWeb-it 2 Interoperability Testing Event

RTCWeb-it 2, hosted by TMC, was the second WebRTC interoperability testing event produced by the SIP Forum, and was held in Santa Clara, California, Monday, November 18, 2013. This special event allowed WebRTC implementers above and below the WebRTC API to work together with the specification authors to improve their code and the specifications.

RTCWeb-it 2 brought together the browser developers, and other implementers working on the code that makes the WebRTC API work; Application developers that are using the WebRTC API; Gateway developers, particularly those building systems that bridge WebRTC and SIP; and the editors of several of the specifications being developed.

RTCWeb-it 2 was a very successful test session, as most of the scenarios that were exercised "just worked" the first time. There were two browser implementations, and one application suite at the event. The scenarios tested included a rich combination of NAT and firewall restricted network paths, ensuring that the expected media and data channel path was taken in each scenario. (This included forcing the browsers to communicate only through a Turn server.)

One observation from the tests is that implementations cannot rely on streams being available until onAddStream is called. This may or may not happen before the setRemoteDescription success callback.

We found a few deployed applications that are currently changing their behavior based on the User-Agent string, and have cost themselves starting to automatically work cross-browser as the browsers are being updated. New application developers should isolate such decisions. (It would have been nice to disable these checks to see if cross-browser DataChannels worked with the browser code.)

Having a rich application suite available helped drive effective tests, and provided very useful feedback for the application developer. All application developers should consider attending the next event to get the quick feedback this kind of testing environment provides.




SIP Forum and BITKOM Announce New Partnership in the Ongoing Development of SIPconnect

The SIP Forum announced a new alliance with BITKOM, the Federal Association for Information Technology, Telecommunications and New Media in Germany, in the development of the next update to the SIP Forum’s SIPconnect 1.1 Technical Specification.

The formal endorsement of SIPconnect by BITKOM will provide valuable technical input and peer review by one of the European Union’s most prominent technical associations, and help ensure that the next version of SIPconnect meets the requirements of BITKOM members. As part of the agreement, the two organizations will pool requirements as they work towards an update of their respective SIP trunking specifications.

Read the full text of the SIP Forum and BITKOM Announcement.




SIP Forum’s Fax over IP Task Group Achieves Milestone with the Publication of IETF RFC 6913

The SIP Forum announced its Fax over IP (FoIP) Task Group has achieved a significant milestone in its mission to improve international IP fax transport services with the publication of RFC 6913 – a new Internet Engineering Task Force (IETF) RFC that introduces a new “sip.fax” media feature tag that aims to enable the intelligent routing of International faxes and greatly improve the reliability of International faxing services.

RFC 6913, co-authored by David Hanes, Kevin Fleming and Gonzalo Salgueiro, defines and registers with IANA a new "fax" media feature tag for use with the Session Initiation Protocol (SIP). Currently, fax calls are indistinguishable from voice calls at call initiation. Consequently, fax calls can be routed to SIP user agents that are not fax capable. A "fax" media feature tag implemented in conjunction with caller preferences allows for early advertisement of fax capabilities and consequently, more intelligent fax call routing.

Click here to see the full text of the RFC 6913 announcement.

As part of the work leading up to this new RFC, the Fax-over-IP Interoperability Task Group published a T.38 SIP-SDP subgroup Problem Statement that details a number of SDP offer/answer interoperability issues found while implementing and connecting T.38 compliant endpoints together, primarily over the SIP signaling mechanism. Click HERE to view or download this document.

In addition, the Forum previously published an official task group problem statement, a document that details the various interoperability issues that currently plague FoIP services. This document is available for download HERE.

The FoIP Task Group has developed a task group charter, which you can view HERE.

To view task group documents and other related materials, please visit the FoIP Task Group document repository HERE.



SIP Forum Forms New SIP over IPv6 Task Group

The SIP Forum has announced the formation of a new SIP over IPv6 Task Group (IPv6) to address key deployment and interoperability issues in the telecommunications industry’s migration to SIP over IPv6. The new task group, which will enlist key stakeholders from the service provider, application developer and equipment communities, has developed and ratified a charter with the mandate to identify issues with SIP over IPv6 and assess the impact of transition technologies and dual stack devices on existing SIP networks.

For more information, please visit the SIP over IPv6 Task Group Charter webpage.



SIP Forum Names Spencer Dawkins Technical Director

The SIP Forum announced today the selection of Spencer Dawkins as its new Technical Director. A longtime member of the SIP Forum and major contributor to Forum work, Dawkins brings to this role about a decade of leadership experience helping to advance SIP and SIP-related technologies within industry and international standards bodies.

As Technical Director of the Forum’s Technical Working Group, Mr. Dawkins will work with SIP Forum management to translate strategic priorities from the SIP Forum Board of Directors into action, developing these directives into key SIP Forum technical initiatives for implementation by SIP Forum task groups. Mr. Dawkins will work closely with each group including the SIPconnect Task Group, new SIPconnect Interoperability Certification Task Group (SC-IT), User Agent Configuration Task Group, Fax over IP Task Group and the Test Event Working Group (SIPit).

For the full text of this announcement, please click HERE.



SIPconnect Technical Recommendation


SIP Forum Ratifies the SIPconnect Technical Recommendation Version 1.1!

The SIP Forum reached an important milestone by formally ratifying version 1.1 of the SIPconnect Technical Recommendation on March 1, 2011, with the unanimous approval of the SIP Forum Board of Directors.

The formal adoption by the SIP Forum Board of the SIPconnect 1.1 Technical Recommendation is based on recognition that the recommendation has been through credible peer review, including broad membership and significant community review, that it is stable and is well-understood, and that it is believed to have resolved known design choices.

For more information, please click HERE to read the full text of the announcement or visit the main SIPconnect page HERE.

To view or download the ratified SIPconnect Technical Recommendation Version 1.1, please click HERE.

The SIP Forum has created a repository of archived SIPconnect 1.1 documents, which includes submissions from Avaya, Broadsoft, CableLabs, Cbeyond, MetaSwitch, Microsoft and Siemens, and contains various draft iterations, including v.00 through v.27 documents.

Please click here for the SIPconnect 1.1 Document repository.



SIP Forum UA Configuration Recommendation Ratified and Published as RFC 6011 by the IETF

The SIP Forum has announced that its User Agent Configuration Recommendation for the locating, retrieving and maintaining of SIP User Agents has been ratified and published as RFC 6011 by the Internet Engineering Task Force (IETF).

The publishing of the recommendation as RFC 6011 marks a significant milestone for the SIP Forum, the leading IP communications industry association, and its UA Configuration Task Group, led by Chairman John Elwell, the Head of Standardization Strategy at Siemens Enterprise Communications GmbH. The UA Configuration Task Group has been working on the procedure since 2009, and has designed the standard in a manner that addresses the needs of end users and services providers, as well as both small businesses and large enterprises deploying SIP-enabled endpoints.

Now published as RFC 6011 by the IETF’s Internet Engineering Steering Group (IESG) after a public review process by the IETF community, the User Agent Configuration Recommendation (UA Config) sets a standard procedure for how a SIP User Agent locates, retrieves and maintains current configuration information for a given SIP Service Provider. It requires that each User Agent, the configuration agent at the service provider and network infrastructure meet such requirements to ensure communication.

To view the full text of the announcement, please click HERE.

To view the published text of RFC 6011, please visit http://tools.ietf.org/search/rfc6011.



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