Hi Puneet Although this is not fully compliant to RFC 3264, it is not an uncommon situation for T.38 fax. We also encountered a similar situation some time back when a switch was adding a fax stream above an existing audio stream in a ReINVITE. Our implementation was rejecting such a ReINVITE with a 488. However, to meet the interoperability requirements of our customer, we made a workaround to our implementation to accept such a ReINVITE.
Regards Tarun Gupta Aricent -----Original Message----- From: Kumar, Puneet (Puneet) [mailto:pune...@avaya.com] Sent: Monday, July 15, 2013 11:15 PM To: sip-implementors@lists.cs.columbia.edu Subject: [Sip-implementors] SDP media line reordering in reINVITE. Hi All, Is it allowed to change the order of media line in SDP in case an UA sends a reINVITE? Consider a case where call is up with audio. m=audio 38646 RTP/AVP 18 Now can any UA send following in the SDP: m=image 38648 udptl t38 ... m=audio 38646 RTP/AVP 8 0 97 As seen above "image' line is added prior to "audio" line. Thanks, Puneet _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors =============================================================================== Please refer to http://www.aricent.com/legal/email_disclaimer.html for important disclosures regarding this electronic communication. =============================================================================== _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
