Re: [Sip-implementors] SDP in 1xx response when no SDP in INVITE

[Takumi Ohba]

Hello, I wuold have confirmed the following point first; Are the two sentences I referred in my first mail contradictory, or not? In my understanding, when no SDP in INVITE, - The former allows SDP in 1xx response. - The latter does not allow it. If my understanding is acceptable, let's go to the second point; Which is correct? Regards, Takumi At 5:04 PM +0200 01.3.8, Christer Holmberg wrote: > Hi, > > >I think the key word here is "provisional", which makes the difference. >>Agree? > > No. "Provisional" and "1xx" is the same thing. > > Regards, > > Christer Holmberg > Ericsson Finland > > > > > Chris > > > > Takumi Ohba wrote: > > > > > Dear all, > > > > > > May 1xx response include a session description when a corresponding INVITE > > > did not contain a session description? > > > > > > According to 2543bis02; > > > - In the second paragraph of 4.2.1 > > > "In this case, the UAS SHOULD still return a session description in its > > > informational (1xx) or success (2xx) response, containing those media > > > streams and codecs it supports." > > > > > > - In the second paragraph of 7.1 > > > "Thus, the UAS can only include a session description in its provisional > > > response if the UAC has included one in an earlier INVITE." > > > > > > These two sentences seem contradictory for me, because the former allows >the > > > inclusion of SDP in 1xx but the latter does not. > > > I believe the former is correct. > > > > > > Regards, > > > Takumi Ohba > > > > > > *************************************************** > > > Takumi OHBA > > > NTT Network Service Systems Laboratories > > > tel +81 422 59 4405 fax +81 422 59 3494 > > > e-mail [EMAIL PROTECTED] > > > *************************************************** > > > > > > _______________________________________________ > > > Sip-implementors mailing list > > > [EMAIL PROTECTED] > > > http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > > > > _______________________________________________ > > Sip-implementors mailing list > > [EMAIL PROTECTED] > > http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > Content-Type: text/x-vcard; charset=us-ascii; > name="christer.holmberg.vcf" > Content-Transfer-Encoding: 7bit > Content-Description: Card for Christer Holmberg > Content-Disposition: attachment; > filename="christer.holmberg.vcf" > > 添付書類を変換 : Macintosh HD:christer.holmberg.vcf 125 (TEXT/ttxt) (00043611) *************************************************** Takumi OHBA NTT Network Service Systems Laboratories tel +81 422 59 4405 fax +81 422 59 3494 e-mail [EMAIL PROTECTED] *************************************************** _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors