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:
52.116.172.37
69.48.244.182
75.126.243.154
149.81.196.253
58.175.80.217
52.116.106.68
169.63.129.178
169.61.94.83
130.198.115.30
169.61.204.39
169.59.242.184
52.116.36.51
149.81.196.254
158.175.80.212
169.45.84.106
169.62.104.135
169.47.56.50
169.63.129.181
135.90.98.10
169.62.104.138
169.44.168.213
169.44.168.214
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.