Dear folks, I hope this is correct to talk,
#1) I would like to know how to determine the source port by SDP negotiation. My understanding is; clients can specify a port they receive RTP packet from by 'm' attribute. For example, A : INVITE ... m=audio 49170 RTP/AVP 0 B : 200 OK ... m=audio 50123 RTP/AVP 0 Then, <From A to B> - source port of A : ??? - destination port of B : 50123 <From B to A> - source port of B : ??? - destination port of A : 49170 In this case, how is each source port determined? In addition, are they able to specify the port clearly with SDP description? #2) How is information of 'packetization interval' exchanged in SDP? I guess 'a=ptime' attribute can be used for it. Is this correct understanding? If correct, then, how should the callee determine it if there is no 'a=ptime' in description? Any help is highly appreciated. Sincerely yours, Toshihiko _________________________________________________________________ デジカメで撮った写真も自由自在に編集 MSN フォト アルバム http://photos.msn.co.jp/ _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
