Hi Vimal, Your UAC should be prepared to recieve media as soon as the negotiation (offer-answer) has been completed successfully. It may be using 200 OK or 183 as in case of Early Media in response to the INVITE request. If you wait for the receipt of ACK to open the RTP port, you are probably not supporting Early Media at all. You'll find these references helpful :
draft-rosenberg-sip-early-media-00.txt RFC 3264 I hope this helps. My 2 cents, Gaurav -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Vimal Bhat Sent: Tuesday, January 17, 2006 4:27 AM To: [email protected] Subject: [Sip-implementors] Loss of some initial RTP media packets. Hi All, We are facing a problem of loss of some intial RTP media packets from the call originating(UAC) device to call termination (UAS) device. The problem is that on UAC we start the sending the RTP media as soon as we send out ACK for the INVITE, but on UAS we open the RTP ports only when the ACK is received. So because of this first few packets may be droped on UAS side if the RTP packet reach UAS before the ACK(which is possible on the UDP transport) Kindly let us know your views on the above problem. Regards, Vimal _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors ********************** Legal Disclaimer **************************** "This email may contain confidential and privileged material for the sole use of the intended recipient. Any unauthorized review, use or distribution by others is strictly prohibited. If you have received the message in error, please advise the sender by reply email and delete the message. Thank you." ********************************************************************** _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
