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Mmusic Status Pages

Multiparty Multimedia Session Control (Active WG)
Art Area: Francesca Palombini, Murray Kucherawy | 1993-Jun-24 —  

2021-05-18 charter

Multiparty Multimedia Session Control (mmusic)


 Current Status: Active

     Bo Burman <bo.burman@ericsson.com>
     Flemming Andreasen <fandreas@cisco.com>

 Applications and Real-Time Area Directors:
     Murray Kucherawy <superuser@gmail.com>
     Francesca Palombini <francesca.palombini@ericsson.com>

 Applications and Real-Time Area Advisor:
     Murray Kucherawy <superuser@gmail.com>

 Mailing Lists:
     General Discussion: mmusic@ietf.org
     To Subscribe:       https://www.ietf.org/mailman/listinfo/mmusic
     Archive:            https://mailarchive.ietf.org/arch/browse/mmusic/

Description of Working Group:

  The Multiparty MUltimedia SessIon Control (MMUSIC) Working Group was
  originally chartered to develop protocols to support Internet
  teleconferencing and multimedia communications. These protocols are now
  reasonably mature, and many have received widespread deployment.
  Currently, the group is focused on using and negotiating media streams
  with the Session Description Protocol (SDP), which is used as a common
  protocol to express media and session descriptions. The group also
  maintains the Real-time Streaming Protocol (RTSP) specifications.

  The group has revised these protocols in the light of implementation
  experience and additional demands that have arisen from other WGs (such
  as AVTCORE, CLUE, ICE, and RTCWEB). In particular, the many uses of SDP
  have led to requests for numerous extensions as well as a recognition of
  several limitations in the original protocol design. Today, the SDP
  protocol is widely deployed and continues to see extensions being defined.

  The current aims of the working group include the following:

  - Provide SDP signaling support for the Interactive Connectivity
  Establishment (ICE) protocol and its extensions. These were originally
  defined in MMUSIC, but are now handled by the ICE WG.
  - To support the establishment of multi-party multimedia sessions for
  RTCWEB based implementations, MMUSIC provides SDP signaling support for
  a number of extensions required by RTCWEB. The MMUSIC WG will seek a
  balanced trade-off between general applicability of such extensions
  versus RTCWEB specific usage.
  - Various other extensions to SDP may be pursued to remedy the most
  urgent of SDP's shortcomings. These include updates to the SDP
  specification itself and missing IANA registrations.
  - With the exception of the items listed above, only extensions within
  the existing SDP framework will be done.
  - Maintain the specification of the (revised) Real Time Streaming
  Protocol (RTSP) as needed.

  The MMUSIC work items will be pursued in close coordination with other
  IETF WGs including AVTCORE, CLUE, ICE, RTCWEB and SIPCORE, as well as
  others where appropriate.

Goals and Milestones:
  Jul 2021 - Submit Using Multicast DNS to protect privacy when exposing ICE candidates as Informational
  Jul 2021 - Submit RFC 8843bis (Negotiating Media Multiplexing Using the Session Description Protocol (SDP)) as Proposed Standard
  Done     - Submit a framework for SDP attributes when multiplexing as Proposed Standard
  Done     - Submit IANA registrations of SDP 'proto' attribute for transporting RTP Media over TCP under various RTP profiles as Proposed Standard
  Done     - Submit SDP extension for cross session stream identification as Proposed Standard
  Done     - Submit Indicating Exclusive Support of RTP/RTCP Multiplexing using SDP as Proposed Standard
  Done     - Submit SCTP-Based Media Transport in SDP as Proposed Standard.
  Done     - Using the SDP Offer/Answer Mechanism for DTLS
  Done     - Submit RTP Payload Format Constraints as Proposed Standard
  Done     - Submit SDP extensions to negotiate multiplexed media streams as Proposed Standard
  Done     - Submit SIP usage for Trickle ICE as Proposed Standard
  Done     - Submit Using Simulcast in SDP and RTP Sessions as Proposed Standard
  Done     - Submit revised SDP specification to IETF as Proposed Standard
  Done     - Submit SDP Negotiation of DataChannel sub-protocols as Proposed Standard
  Done     - Submit Interactive Connectivity Establishment (ICE) with SDP offer/answer and SIP as Proposed Standard
  Done     - Submit Unknown Key Share Attacks on uses of Transport Layer Security with the Session Description Protocol as Proposed Standard
  Done     - Submit T.140 Real-time Text Conversation over WebRTC Data Channels as Proposed Standard
  Done     - Submit SDP Negotiation of MSRP over Data Channels as Proposed Standard

All charter page changes, including changes to draft-list, rfc-list and milestones:

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