Hi Praveen, I think it is fine to change the media flow direction, and the port for another media stream in the same Re-INVITE. Section 14 of RFC 3261 allows this (RFC 6131/RFC 6337 also don't prohibit this).
Regards, Swami. Sensitivity: Internal & Restricted -----Original Message----- From: sip-implementors-boun...@lists.cs.columbia.edu [mailto:sip-implementors-boun...@lists.cs.columbia.edu] On Behalf Of Parveen Aggarwal Sent: Friday, June 8, 2018 9:00 PM To: sip-implementors@lists.cs.columbia.edu Subject: [Sip-implementors] Media Port change during Hold/resume ** This mail has been sent from an external source. Treat hyperlinks and attachments in this email with caution** Dear Experts, I am facing one scenario: 1. Make video call: Audio and video port non-zero 2. downgrade video call: audio port non-zero and video port 0 3. Network hold the call: audio:sendonly , video port 0 4. network sending re-invite without SDP, User agent sending offer in 200 OK but with video port 0 5. Network sending ACK with audio: sendonly, video port: 0 === after this Network is resuming the call with re-invite but at the same time it is sending video port as non-zero. Is it a correct behavior to update audio media direction from recvonly to sendrecv and updating the Video port in same re-INVITE? (Any spec reference) Thanks for your advice. Regards, Parveen _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors 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 proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
