This article outlines the ports that need to be open to allow for endpoint registration and call processing.
| Port | Protocol | Description |
| 80 | TCP | Required for GUI redirection to HTTPS and Endpoints config files requested over HTTP |
| 123 | UDP | Used for Network Time Protocol (NTP) that allows the synchronisation of system clocks (from desktops to servers) |
| 443 | TCP | Required for secure web content and secure provisioning over HTTPS |
| 5060 | TCP and UDP | Required for SIP Signalling |
| 5061 | TCP and UDP | Required for secure SIP signalling |
| 5080 | TCP and UDP | Required for SIP proxy signalling |
| 5081 | UDP | SIP Signaling between Conferencing Modules |
| 5082 | TCP | Utilised if a connection is configured with the TLS transport |
| 8001,9002 | TCP | Required for Call Connect web communications |
| 20000-31999 | UDP | Required for Audio/Video streams (RTP) |
If your firewall supports hostname-based rules, allow the following hostnames:
- portal.cross-connect.co.uk – Web interface
- euk.cross-connect.co.uk – SIP proxy
- endpoints.cross-connect.co.uk – Device provisioning
Alternatively if hostnames are not supported the following IP addresses should be allowed through your firewall:
- 144.21.49.233
- 129.151.83.22
- 141.147.112.55
- 129.151.91.125