Snom 100 Administrator's Manual page 37

TCP Threshold (web interface only)
Set the threshold value for choosing TCP transport layer for SIP
messages.
STUN Server (web interface only)
IP address of a STUN server (hostname:port).
STUN server binding (web interface only)
STUN binding interval in seconds.
Network identity (web interface only)
Network identity (hostname).
Network port (web interface only)
Network identity (port).
Local SIP port (web interface only)
Use local SIP port (<off>) or network port (<on>) see setting
above.
Dynamic RTP Start Port (web interface only)
First dynamic RTP port which is dynamically chosen by the phone
when establishing a connection.
Dynamic RTP End Port (web interface only)
Last dynamic RTP port which is dynamically chosen by the phone
when establishing a connection.
Use user=phone (web interface only)
Use user=phone statement in SIP signalling.
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