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SIP over IPv6 (SIPv6) Activity Group

Test and Certification

The realization of UC interoperability requires a strong testing and certification program.  The charter of the Test and Certification Working Group (CWG) is to execute on behalf of members a certification process to provide assurance of interoperability.  For each testing and/or certification program, a CWG Activity Group will be created, comprised of CWG members who have expertise in the technology to be tested. The CWG Activity Group will take as input profile(s) and test cases developed by another Activity Group, or in some cases, a profile created by an external body, for which test cases are required.

Each test program will include:

  1. The creation of test plans designed to validate specifications and use cases, based on the test cases derived from the interoperability profile.

2) The creation of appropriate test tools and test environments as required.

Note that on-site lab-based testing is not the only test topology.  To limit the cost of testing, it is the goal of the CWG that remote testing is facilitated where possible over secure test networks, and that test tests are fully automated where possible.  Ultimately, robust test tools will be procured that will enable vendors to self-certify; with support from a Test Lab Vendor being optionally available.

What We Do

Manage and administer the SIPv6 pre-certification test and interoperability program.  This comprises:

  • A test plan and self-certification test tool that are available for download free for members
  • A secure IPv6 network that is accessible by members to conduct 1:1 or 1:M SIPv6 interoperability tests
  • An IPv6 test environment that is available for use by members to conduct remote testing (via the network)
  • On-site testing is available by prior arrangement with UNH-IOL: this requires the payment of a fee to UNH.

To book time on the network or for testing at UHN-IOL, contact Tim Carlin (This email address is being protected from spambots. You need JavaScript enabled to view it.).


To provide a baseline test plan and verification mechanism to facilitate interoperability of SIP implementations on IPv6 networks.

Problem Statement

In 2012 the UCI Forum Voice Study Group identified the lack of a verifiable standard for SIP over IPv6 networks as a major impediment to future unified communications interoperability.  The SIPv6 Activity Group was mandated to create a test tool and verification program to close this gap.

The US Department of Defense (DoD) Unified Capabilities Requirements 2008 Change 3 document was chosen as the baseline interoperability profile as:

  • It was the most complete and coherent set of requirements, the implementation of which would ensure inter-vendor interoperability
  • Conformance with the profile would be a meaningful goal that vendor members would already be aspiring to achieve as part of their product plans
  • Given the multi-national nature of many 21st century military operations, even non-US vendors who sell communications networks to international coalition partners aspire to achieve this certification.

How We Work Together

The main activities of the group are:

  1. Manage, maintain and distribute the test tool suite based on a comprehensive test plan.
  2. Manage and maintain:
  3. A secure IPv6 test network over which testing can be conducted
  4. A test environment that contains various components (e.g. IPv6     compliant routers) that can be used to simulate a comprehensive SIPv6 network.
  5. Organize and conduct interoperability events for SIPv6 interoperability testing.


The test tool was created by the University of New Hampshire InterOperability Laboratory (UNH-IOL) and is based on their IOL INTACT™ test platform.  UNH-IOL also manage and operate the test environment; the test network and conduct supervised testing as an additional service.

      The test tool is available to IMTC members. To learn how to access the tool, please click 

How to Join

To subscribe to the Activity Group’s email list, scroll to the top of the page and click on the “Member Login” button to access the member portal, then select “Join a Work Group”, select the Activity Group and click on the “subscribe” link. You will receive a subscription confirmation in your email. If you have forgotten your password, click on the “Forgot/Need Password” on the sign in screen and it will be emailed to you. If you have not set up a user name and password or have any questions, contact the IMTC help desk at This email address is being protected from spambots. You need JavaScript enabled to view it." target="_blank" data-behavior="truncate" style="color: #37296d;">This email address is being protected from spambots. You need JavaScript enabled to view it.

Participating Companies

Sonus Networks, Microsoft Corporation, University of New Hampshire InterOperability Laboratory (UNH-IOL)