The only wild guess could be The softphone thinks that the other end is behind a NAT/FW and hence by sending to the same source port it thinks it can get thru the NAT.
Kasturi -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Voipers Portugal Sent: Wednesday, January 18, 2006 12:02 PM To: [email protected] Subject: [Sip-implementors] SIP - SDP - RTP Hi, I have a doubt using the SIP SDP messages. When the softphone receives the SDP message (in the 200 OK message) and the media port is for example 10002, that is, when the softphone wants to talk, it should send RTP messages to that port. What is happening is that, the softphone receives media from port 20000 (for example) and answers back to 20000 instead of the 10001 that was expected. Any idea why this happens? Jose Simoes _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
