I have a main site that will have pbx and voice box. The main site will have VPN connection to all the other branch sites.
I need to know if VPN can handle this type of setup. I don't have much details but I could get the details that are needed to make this work or what is the recommended way of doing this?
another good point I need to mention is there will be layer 3 switches at each office and a firewall device what will be used to setup the vpn.