Hello Rishi , The Re-Invite is not required in this scenario. Regards , Sayan
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Prasad, Rishi Kaushal Sent: Thursday, August 31, 2006 10:35 AM To: sip-implementors@cs.columbia.edu Subject: [Sip-implementors] Re-INVITE in the offer answer model. One query for u all In a call scenario when offerer sends an INVITE to support different media codec (assuming 0 8 2) and gets a 200 OK response form the answerer with supporting only one codec (assume 0). In this case as the offerer knows that the answerer is going to send only one of the codec (as specified in the 200 OK by the answerer). Isn't the offer answer is complete? Or the offerer is required to send a new offer with only one of the codec sent by the answerer and expect a response for it. The call flow is: Offerer Answerer ---INV w SDP + IAM Cseq=10(codec value=0, 8, 2) --> <------183 + ACM--------- <------180 + CPG--------- <------200 OK (codec value=0) -------- -------ACK-------------> ----------------------------------------------------------------------- Voice path ----------------------------------------------------------------------- -re-INVITE w PCMU Cseq=11 (codec value=0) ----> Is this re-invite is required by offerer as it already knows the unique codec value used by the answerer? _______________________________________________ Sip-implementors mailing list Sip-implementors@cs.columbia.edu https://lists.cs.columbia.edu/cucslists/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@cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
