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Packet Switched Streaming Services Activity Group

What We Do

  • We perform and document pre-planned, controlled interoperability tests for Packet-Switched Streaming Services according to technical specifications from 3GPP (TS 26.233, TS 26.234, and TS 26.244) and 3GPP2 (C.P0046 and C.S0050). Scope of testing is full: From the creation phase, to delivery and playback/consumption of multimedia content over wireless networks.
  • We plan, conduct, and track rigorous interoperability tests for the benefit of participating member companies.
  • We provide detailed input to 3GPP, 3GPP2 and other SDO’s so that the findings can be applied to further improve the relevant standards.


IMTC forged professional alliances with several standards development organizations.

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The success of the PSS AG enables launching PSS services, which are popular and widely deployed commercially.
The PSS AG has tested the 3GPP PSS specifications from releases 4 – 6. The procedures of this group have reached an unprecedented 96% success rate testing of 3GPP release 5! This outstanding success has increased the demand for this group with 30 member companies participating in tests. The PSS AG has a liaison relationship with 3GPP, and several liaisons were posted with 100% acceptance by the 3GPP SA#4 work group.

Collaboration Method

  • Private e-mail reflectors are used to ensure maximum confidentiality.
  • Conference calls for milestone update about contribution statuses and create and update TIP documentation.
  • Face-to-face meetings when and if needed. Participation is limited to IMTC members in good standing.

Participation is limited to IMTC members in good standing.

In order to participate, your company must be an IMTC member in good standing and a developer of one of the following; streaming servers, content distribution servers, content creation tools, or multimedia terminals.

Why Join?

  • By identifying and resolving interoperability issues you will improve the quality of your company’s solutions.
  • Be the first to test drive new capabilities added to 3GPP and 3GPP2 streaming standards with industry leaders. Gain access to experts’ news and views regarding standards.
  • PSS AG is extremely active, well established with a contagious collaborative spirit.

PSS AG provides de-facto proof for interoperability: providers purchasing PSS services acknowledge participation in PSS AG tests.

Testing opportunities include:

  • Face-to-face meetings events per year
  • Remote testing available almost continuously

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." style="color: #37296d;">This email address is being protected from spambots. You need JavaScript enabled to view it..

Member Companies

EricssonFrance TelecomFraunhofer InstituteNextreamingNokiaNXPPacketvideoQualcommRealNetworksSamsungST Ericsson