Hello Jonathan,
On 03/19/2014 03:29 PM, Jonathan Hunter wrote:
I appreciate these handsets have some issues, whereby they expect responses on port 5060, even though they initiate transactions from a dynamic port, I just wondered if anyone had a working model or some pointers they could share?
1) If the phone properly indicates port 5060 in the Via header, then Kamailio will send responses to that port regardless of the source port of the requests to which it is responding.
That is, unless you have force_rport() on, the precise function of which is to override that default behaviour and use the source port instead.
2) I have a 7960 desk phone that I use with Kamailio. It's behind NAT in relation to Kamailio, and giving it the usual NAT treatment (nathelper fixups, rtpproxy) works just fine.