Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle
Christer Holmberg <christer.holmberg@ericsson.com> Sat, 04 May 2013 06:16 UTC
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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: "Charles Eckel (eckelcu)" <eckelcu@cisco.com>, "mmusic@ietf.org" <mmusic@ietf.org>
Thread-Topic: BUNDLE: Accept m- line, reject bundle
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Date: Sat, 04 May 2013 06:15:55 +0000
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Subject: Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle
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Hi Charles, Just to clarify, I am talking about a case where the answerer DOES support BUNDLE, but for some reason it does not want to accept the m- line within a BUNDLE group. Regards, Christer ________________________________________ From: Charles Eckel (eckelcu) [eckelcu@cisco.com] Sent: Saturday, 04 May 2013 7:40 AM To: Christer Holmberg; mmusic@ietf.org Subject: RE: BUNDLE: Accept m- line, reject bundle > -----Original Message----- > From: mmusic-bounces@ietf.org [mailto:mmusic-bounces@ietf.org] > On Behalf Of Christer Holmberg > Sent: Friday, May 03, 2013 6:07 AM > To: mmusic@ietf.org > Subject: [MMUSIC] BUNDLE: Accept m- line, reject bundle > > Hi, > > > > Assume the following case: > > > > 1. An SDP offer contains an m- line associated with a BUNDLE > group > > 2. The answerer wants to accept the m- line, but wants to reject it > being in the specific BUNDLE group. > > > > A few alternatives on how this could be achieved have been > presented: > > > > Alt 1. The answerer accepts the m- line, but does not associate it > with a BUNDLE group. > > > > Alt 2. The answerer accepts the m- line, associates it with a > BUNDLE group, and then sends a new offer which removes the m- > line from the BUNDLE group. > > > > Alt 3. The answerer rejects the m- line, and then sends a new offer > which adds the m- line outside a BUNDLE group. > > > > In my opinion, Alt 1 does not work, at least not if the offer contains > identical port values for the m- lines associated with the BUNDLE > group. It would mean that the m- line is not added to a BUNDLE > group, but still has the same port value (at least at the offerer side) > as the m- lines in the BUNDLE group, which is not allowed. True, but isn't that precisely what will happen if the answerer does not understand/support BUNDLE? So at this point the offerer could choose to send a re-INVITE to use different receive ports for the non-bundled m-lines. I would not put that burden on the answerer. Cheers, Charles > > > So, my suggestion would be to specify that the answerer must use Alt > 2 and/or Alt 3. > > > > Comments? > > > > Regards, > > > > Christer
- [MMUSIC] BUNDLE: Accept m- line, reject bundle Christer Holmberg
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Paul Kyzivat
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Christer Holmberg
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Paul Kyzivat
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Charles Eckel (eckelcu)
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Christer Holmberg
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Dale R. Worley
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Paul Kyzivat
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Cullen Jennings (fluffy)
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Martin Thomson
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Paul Kyzivat
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Martin Thomson
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Christer Holmberg
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Suhas Nandakumar