Ok so I'm running OpenWRT Backfire 10.03 as my firewall and I've got a couple of devices I'm trying to use as SIP softphone clients for my work and I can't get any inbound audio working. I know that the SIP clients work as in our office I'm able to connect to our SIP service without any issue.
I can make outbound calls, I just can't hear any inbound audio.
I've been through a variety of options such as
* Enable Proxy
* Enable STUN
* Enable ICE
My thoughts now are what can I tweak on my firewall given that there isn't an issue with the Vanilla vendor firmware on a similar TP-Link device at work.
Cheers.
