Ensure that your corporate firewall has the following ports and IP addresses in its whitelist.
Ports for UDP traffic: 8000-18000, 20000-30000
IP addresses to enable WebRTC traffic: Web gateways and media servers
- The Web SDK requires the 443 TCP port
IP addresses to enable SIP traffic: Session border controller
- SIP requires the 5060 TCP/UDP or 5061 SIP/TLS port