I am using FreePBX 220.127.116.11 version.
From the different network can able to register and send call invite to Android Client (Zoiper).
But unable to get the voice data. Call disconnected automatically.
My Configuration details is below,
My FreePBX server is connected in LAN.My external IP is 18.104.22.1685 and my server local IP is 192.168.4.23 means, what are the configuration is needed ?
I did the following
Settings > Asterisk SIP Settings > Chan SIP Settings > Nat Settings
Set NAT = yes
IP Configuration = Static IP
Override External IP = my static External IP
In General SIP Settings Tab
External Address = my static External IP
Local Networks = 192.168.4.0 / 255.255.255.0
We just port forward 5060 and 5160 , 10000 to 20000 UDP ports
Other than that any settings is needed ?
Is STUN Server is needed to establish call ?