Block outbound calls from mobile app when not on the local Lan

[Pierre Rossouw]

Hi. I would like to know if I can prevent a users from using their mobile app to make outgoing calls when they are not on the company network?
Under extension - Options - Restrictions there's a setting "Disallow use of extension outside the LAN, but that didn't work.

 

[Saqqara]

If you want this for all users and you have no SBC servers , you can block port 5090 on your firewall.

3CX mobile app uses to the 3CX tunnel port to communicate to the 3CX server

 

[ChrisC_3CX]

@Pierre Rossouw

You could indeed block 5090 if not using remote 3CX Clients or SBCs, but that will of course block internal calls for those remote clients as well.