RE: [EME] SIP signalling and 3GPP
Paul Francis <francis@cs.cornell.edu> Mon, 16 July 2007 19:55 UTC
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Subject: RE: [EME] SIP signalling and 3GPP
Date: Mon, 16 Jul 2007 15:55:37 -0400
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Thread-Topic: [EME] SIP signalling and 3GPP
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From: Paul Francis <francis@cs.cornell.edu>
To: Gaguk Zakaria <gzakaria@hns.com>, eme@irtf.org
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EME isn't the right place to discuss this (we are, for now anyway, designing from scratch). Presumably you need to ask someone in 3gpp itself... PF > -----Original Message----- > From: Gaguk Zakaria [mailto:gzakaria@hns.com] > Sent: Monday, July 16, 2007 2:04 PM > To: eme@irtf.org > Subject: [EME] SIP signalling and 3GPP > > > Hi > I have question regarding SIP signalling and its application > at 3gpp IMS > 1. In almost all examples in the 3GPP doc regarding SIP > signalling, when a UA sends an INVITE message, the called > party usually replies it with a provisional response 183 > Session Progress. My question is that if the INVITE message > consists of only ONE media type, meaning there is no need of > media negotiation, does the called party still need to reply > it with 183 Session Progress. Can the called party just reply > with 200 OK or nor acceptable? > 2. Does the P-CSCF require the arrival of 183 Session > Progress message, as the provisional response of the INVITE, > to authorize reource (authorize QoS). Can P-CSCF authorize > resource (QoS) based on the INVITE message if the INVITE > message consists of only one media type. > > Gaguk > > _______________________________________________ EME mailing list EME@irtf.org https://www1.ietf.org/mailman/listinfo/eme
- [EME] SIP signalling and 3GPP Gaguk Zakaria
- RE: [EME] SIP signalling and 3GPP Paul Francis