18650

First of many UDP ports responsible for external PBX voice sessions. Each new session uses new port.

Number of Ports

Recommended to allocate up to 20 ports to serve up to 20 voice sessions.

Need for more concurrent sessions shall be discussed with the support and business representatives.

Each new PBX call allocated its own UDP port starting from this port. When a session is over, that port is released and reused in the very next session.