I am on a personal mission to under a little bit more about VoIP.
So we run a Gamma \ Horizon system at work. All configured and working via Cisco.
Our Wifi is controlled via Unfi USG, Switches etc. I've plugged in (With Consent) one of our spare Voip phones into a spare port on one of the Unifi switches and configure on it own Vlan etc.
The phone can call external numbers no problem, but if I try to ring an internal ext the internal phone rings but once connected I can not hear the person on the other end.
I get that something is blocking it or its not configure I just do know where to start trouble shooting,
Maybe someone could point me in the right direction?