User's Manual

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The user extension number and system extension number ranges are defined here to avoid any conflicts within
the IPPBX system. You can modify these number ranges as per your requirements.
VoIP Advanced
Path: Telephony -> Preferences -> VoIP Advanced
Global SIP settings allow you to configure some general and advanced options for the IPPBX system global SIP
preferences.
 UDP Port: SIP over UDP service port. By default IPPBX system uses UDP as SIP transmission protocol. Port
number can be changed here if required. If changed on the IPPBX system, you’ll also have to change on the
SIP clients.
 TCP Port: If the IP phones support TCP protocol, you can register SIP extensions over TCP protocol on port
5061.
 TLS Port: If the IP phones support TLS protocol, you can register SIP extensions over TLS protocol on port
5062.
 ICE Enable: This is specific to clients that support NAT traversal for media via ICE, STUN, TURN. By default,
please keep it enabled, otherwise WebRTC won't work, STUN Server Address can be left blank.
 STUN Server Address: By default please keep it blank, if you got available STUN server, please specify the
valid server address, otherwise an invalid STUN server address will cause phone system exception.
 RTP Port Range: The UDP ports used by the IPPBX system to carry RTP voice stream. Do not change the port
range or you may encounter audio issue with phone calls.
 User Agent: The default user agent string also contains the Asterisk version. If you don't want to expose it,
change the user agent string here.
 External Media Address: If you want to map your IPPBX system to the Internet, you should specify the static