Re: [MMUSIC] "SIP-SDP Overlap with RTSP" and OMA

[Jouni Mäenpää <jouni.maenpaa at ericsson.com>]

Hi,

> In OMA we had discussed using SIP to signal the establishment of an
> RTSP session, bypassing the RTSP SETUP as in this draft, and we did
> not go that direction.

Just wanted to point out that at least ETSI TISPAN defines a model in
which SIP/SDP is used to establish a control channel for RTSP. They
define two alternatives, one of which bypasses the RTSP SETUP. The other
alternative uses SETUP and TEARDOWN.

Regards,
Jouni

Tom Hiller wrote:
> Hello,
> 
> Last week at MMUSIC, the last slide of the presentation "SIP-SDP Overlap
> with RTSP" associated with "draft-lindquist-mmusic-sip-rtsp-00.txt",
> which involves bypassing the RTSP SETUP and DESCRIBE requests, suggests
> that this direction is on-going work in OMA, i.e.,:
> 
>> Ongoing work in other standard forums (ETSI TISPAN, 3GPP, OIPF, OMA, etc)
> 
> However, it is not the case.  In OMA we had discussed using SIP to
> signal the establishment of an RTSP session, bypassing the RTSP SETUP as
> in this draft, and we did not go that direction. Main reasons were that
> we wanted to be compliant with existing RTSP implementations and with
> RTSP 2.0 going forward.
> 
> Thanks.
> 
> 
>  - Tom
> 
> 
> 
> 
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