- On 3cx page find extension and choose provision
- Phone type = Fanvil X3S copy MAC from phone (remove colons)
- Change method to 'STUN'
- http to phone and set timezone
- Copy provision URL from 3CX page and paste into phone server Address on Static Provision tab
- change protocol type to https:
- change setting to update after reboot.
- Select Auto Provision Now
N.B. Check these.....
In 3CX
On Extension > 'options' tab
UNTCK Disallow use of extension outside LAN
TICK PBX Delivers Audio