voip configuration

[hadi57]

hi
i need to configure 3 boxes of opnsense in 3 different geographic locations as follows:
1- location A have internet users and some can have access to use phone calls
2- location B same as A
3- location C same as A
4 - how is it possible for A, B & C to communicate with each other using the internet?
i am planing to practice this next week

help really appreciated
hadi57

[bartjsmit]

Create an OpenVPN server at A, allow clients to communicate. Run clients at B and C.

If you want send all traffic from B and C to A, i.e. if A is the route to the internet for everybody, you need to set 'redirect gateway'. If you want to do split tunnels, you'll need to push out some routes to B and C so they can see the internal subnets behind the other client firewalls.

Bart...