Ports forwarded

What ports need to be opened on my firewall for a strictly remote PBXACT. I don’t want to forward everything to the PBXact appliance, I want our enterprise firewall to filter the majority of the traffic and then I can have the responsive firewall handle the rest


Does the restful API need to be forwarded as well? I do not see that in the wiki posted above.

I believe the ports for PhoneApps are the only ports required for RESTful API