Hi, Once you send the offer ( either in INVITE or in 200 OK delayed media ), its implicit the UA must be ready to listen on the specified ports in the offer. So, UA should open the ports immediately after sending 200 OK offer.
Somesh S Shanbhag M G L Bangalore -----Original Message----- From: [EMAIL PROTECTED] on behalf of Elison Niven Sent: Tue 9/9/2008 4:07 PM To: [email protected] Subject: [Sip-implementors] More on when to open rtp listen port Hi, Now if I receive an INVITE without an SDP, I send the offer in the 200 OK. So should I open the listen port before or after receiving the ACK? If I do so after receiving the ACK, there are chances that a few ICMP packets may be sent back to the first few received RTP. So should I open the rtp listen port on sending 200 OK or on receiving the ACK in this case? Best Regards, Elison _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors EMAIL DISCLAIMER : This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. Any unauthorised distribution or copying is strictly prohibited. If you receive this transmission in error, please notify the sender by reply email and then destroy the message. Opinions, conclusions and other information in this message that do not relate to official business of Mascon shall be understood to be neither given nor endorsed by Mascon. Any information contained in this email, when addressed to Mascon clients is subject to the terms and conditions in governing client contract. Whilst Mascon takes steps to prevent the transmission of viruses via e-mail, we can not guarantee that any email or attachment is free from computer viruses and you are strongly advised to undertake your own anti-virus precautions. Mascon grants no warranties regarding performance, use or quality of any e-mail or attachment and undertakes no liability for loss or damage, howsoever caused. _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
