Colin, SDP is invalid with out mandatory parameters. What I mean is not the syntax and other parameters.
I mean to explan Udit's question of multiple "C" parameters at Media description level and Session level. -Sreeram. ________________________________ From: [EMAIL PROTECTED] on behalf of Colin Perkins Sent: Thu 8/25/2005 5:10 AM To: Sreeram Kanumuri (WT01 - Voice & Next Generation Networks) Cc: [email protected]; [email protected]; [EMAIL PROTECTED] Subject: [Sip-implementors] Re: [Sip] SDP Query This is not valid, since it's missing "v=", "o=", and "s=" lines, all of which are mandatory in SDP. Colin On 24 Aug 2005, at 23:08, [EMAIL PROTECTED] wrote: > Hi Udit, > > There Must be one "C" field at the session level (or) one "C" field > in each media description level. > "C" value at the session level is like global value.and Media > level is like local. > so if you do not have it in Media level it will take the value at > Session level. > > so to your question: > Yes it is valid. > It is indicating different Ip addresses for different Media types. > > If you want a particular media stream to be in holding give that IP > address for that particular Media stream "c" (to 0.0.0.0 or > a=inactive) > > HTH, > > Regards, > Sreeram. > > From: [EMAIL PROTECTED] on behalf of [EMAIL PROTECTED] > Sent: Wed 8/24/2005 4:11 PM > To: SIP Implementors > Cc: SIP IETF > Subject: [Sip] SDP Query > > > Hi, > > Just want to check if following SDP is valid: > > c=IN IP4 224.2.17.12/127 > t=2873397496 2873404696 > a=recvonly > m=audio 49170 RTP/AVP 0 > c=IN IP4 224.2.17.13/127 > m=video 51372 RTP/AVP 31 > > It indicates different IP address used for audio and video types. > > I thought the reason we have connection parameter in both session > and media description is for handling hold cases, where you want to > hold a particular set of media instead of whole session. > > Regards, > Udit > _______________________________________________ > Sip mailing list https://www1.ietf.org/mailman/listinfo/sip > This list is for NEW development of the core SIP Protocol > Use [email protected] for questions on current sip > Use [email protected] for new developments on the application of sip _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors Confidentiality Notice The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain confidential or privileged information. If you are not the intended recipient, please notify the sender at Wipro or [EMAIL PROTECTED] immediately and destroy all copies of this message and any attachments. _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
