Hi Dale, thank you for the valuable info, I am sorry with my terminology that I made the mistake in explaining.
1. As of now I can say that the port named in the SDP that I receive is the port "to which" I send my RTP (this is no problem and works perfectly fine when i use this as destination port to send my RTP). 2. Just for double confirmation is it normal that the port "from which" I send my RTP is irrelevant (then I really don't need to worry), because as far as I can understand the port 5060 is already open and when I give this port number (source port) from which I send my RTP works perfectly fine. if you say this is absolutely fine then I really don't need to worry. The only thing I need to take care is that I should use my own defined RTP port (which I have sent with my INVITE/SDP) to listen to incoming RTP packets. Correct me if I am wrong Regards On Mon, Mar 7, 2011 at 7:00 PM, Worley, Dale R (Dale) <[email protected]>wrote: > ________________________________________ > From: [email protected] [ > [email protected]] On Behalf Of Siga [ > [email protected]] > > I am parsing the audio port number which I get as SDP from my SIP Server. I > use this port number for sending my RTP Packets. > _______________________________________________ > > You need to be careful with your terminology. The port named in the SDP > that you receive is the port *to which* you must send your RTP. The port > (on your system) *from which* you send RTP is irrelevant. Now, you may > understand this, but what you wrote does not make that clear. Similarly, > the port named in the SDP that you send is the port on your system on which > you will listen for RTP. > > Dale > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
