[MMUSIC] BUNDLE: RTCP port issue solution alternatives

Christer Holmberg <christer.holmberg@ericsson.com> Wed, 21 October 2015 11:18 UTC

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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: "mmusic@ietf.org" <mmusic@ietf.org>
Thread-Topic: BUNDLE: RTCP port issue solution alternatives
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Date: Wed, 21 Oct 2015 11:18:46 +0000
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Subject: [MMUSIC] BUNDLE: RTCP port issue solution alternatives
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Hi,

Based on the discussions so far, I have identified 3 alternative solutions for the RTCP port issue:


1)      Mandate RTCP-MUX whenever BUNDLE is used

Note: In order to maintain alignment with SDP, my suggestion would be to still mandate including of a=rtcp-mux in all RTP m- lines. I.e. the rtcp-mux usage would not be implicit.


2)      Select the RTCP port based on the RTCP properties (implicit or explicit) associated with the FIRST RTP m- line within the BUNDLE group, or the RTCP properties associated with the selected offerer BUNDLE address m- line if RTP.


3)      Allow usage of RTCP properties (a=rtcp, ICE RTCP components, etc) also in non-RTP m- lines.


Note: This MAY require updates of some RFCs.

Regards,

Christer