The following table lists the ports and protocols that Hosted PBX user applications and devices use to exchange data with the server.

This information may be useful for configuring firewalls on users’ computers or in your organization’s LAN. All established connections must be accepted.

VOIP phones:

Port numbers Protocol
UDP 5060; TCP 5060, 5061 SIP, SIP TLS
UDP 35000-65000 (assigned dynamically) RTP, SRTP