We have 5 x SNOM 300 Handsets connnected on a LAN to a hosted Asterisk FreePBX and are having problems getting any of them to register with the Asterisk box.
I had assumed that this was because they were all using port 5060, so I set a forward up for port 5061 on the gateway and changed one of the handsets to use port 5061 to test it but this still didnt connect. There is no firewall enabled.
In the trace on the phone it suggests it is also using port 52306 in the negotiating which I guess will not work as there is no port forwarding for this port, and not sure there should be?
Do we need to use individual ports and port forwarding? The stun server settings seem to be working as the IP address each phone is sending is the correct one.