Hi FG admins
From this tech tip:
I have this scenario (phones behind NAT):
Did all the required config, and even more:
config system settings
set sip-expectation disable
set sip-nat-trace disable
set default-voip-alg-mode kernel-helper-based
end
config system session-helper
delete 13
end
config voip profile
edit "default"
config sip
set rtp disable
set contact-fixup disable
end
end
...
Played with the above parameters and FG reboot but didn't work. I mean I have this behavior:
- Calling from internal IP phone to external mobile cell phone (GSM): It rings but no voice
- Calling from internal IP phone to internal IP phone: IP phone doesn't even ring
In the traffic logs I could see some "TCP reset from server" on SIP connections.
So I'm starting to think that probably on server side must be somehow configured to accept calls from IP phones behind NAT. Anyone knows something about that?
1 Solution
