Required Network Ports / IP Addresses

For FrontSpin’s VoIP telephony to function properly, certain Network Ports / IP Addresses are required. If any of these are blocked on your network, it can result in call quality and performance issues. 

The following FrontSpin media server IPs need to be whitelisted on your network:

The following ports need to be open for each of the media server IPs listed above:
Outbound connections: TCP/443, TCP/80, TCP/3478, UDP/3478
Inbound Connections: all ports
UDP/16384 to UDP/32768
SIP messages are transported by the WebSocket using TCP/443.