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

[Bob Penfield]

Yes, they are contradictory. I agree with you that 4.2.1 is the right thing to do. 4.2.1 has a MAY in it and 7.1 says "..can only..." instead of MUST NOT. The BIS draft probably should have 7.1 corrected or modified to use appropriate requirements language. ----- Original Message ----- From: "Takumi Ohba" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, March 08, 2001 8:14 PM Subject: Re: [Sip-implementors] SDP in 1xx response when no SDP in INVITE > 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 > _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors