I have setup a 3CX pbx at subnet A: 192.168.10.0/24, pbx ip: 192.168.10.20
Firewall check ok, Android phones work ok.
Now, I go with the phone to location B: 192.168.20.0/24
Location B is connected to A using a Lan2Lan VPN.
There is no internal dns at location B which points pbx.A.local to the...