Thanks for the reference Sunil ...very helpful
--- On Thu, 12/10/09, [email protected] <[email protected]> wrote: From: [email protected] <[email protected]> Subject: RE: [Sip-implementors] Query about Media (RTP) right after 100 TRYING To: [email protected], [email protected] Date: Thursday, December 10, 2009, 10:43 PM Hi Rashid, I don't think RFC says that we can't send RTP after receiving INVITE and after sending 100 Trying. Note as per RFC once we send offer in INVITE we must be ready to receive RTP on any of the codec listed in the offer. Please find extract from RFC 3264 " Once the offerer has sent the offer, it MUST be prepared to receive media for any recvonly streams described by that offer. It MUST be prepared to send and receive media for any sendrecv streams in the offer, and send media for any sendonly streams in the offer (of course, it cannot actually send until the peer provides an answer with the needed address and port information). In the case of RTP, even though it may receive media before the answer arrives, it will not be able to send RTCP receiver reports until the answer arrives." Regards Sunil verma -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Rashid Shakil Sent: Friday, December 11, 2009 12:20 AM To: [email protected] Subject: [Sip-implementors] Query about Media (RTP) right after 100 TRYING Hello, Quick question ...Is it possible that far end media gateway can send RTP right after 100 TRYING. Means GW A sends an INVITE GW B respond with 100 TRYING and start sending media (RTP) without sending 183 SESSION PROGRESS or 180 RINING with SDP. Let me know if this is correct also if its documented anywhere ..Thanks in advance for help. - Rashid Shakil _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors Please do not print this email unless it is absolutely necessary. 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 [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
