Skip to main content

Multiplexed Media Types (MMT) Using Session Description Protocol (SDP) Port Numbers

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Christer Holmberg , Harald T. Alvestrand , Jonathan Lennox
Last updated 2013-04-11 (Latest revision 2012-10-08)
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


This specification defines a new SDP Grouping Framework SDP grouping framework extension, "MMT", and a new SDP media type, "anymedia". Together they can be used with the Session Description Protocol (SDP) Offer/Answer mechanism to negotiate the usage of multiplexed media types, which refers to the usage of a single 5-tuple for different media types. This specification also defined a new SDP attribute, "mmtype", which can be used within a "anymedia" SDP Media Description to map PT (Payload Type) values to a specific media type.


Christer Holmberg
Harald T. Alvestrand
Jonathan Lennox

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)