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Server
Address
Set the STUN server address
Server Port Set the STUN server port, default is 3478
Set the STUN binding period which can be used to keep the NAT
pinhole opened.
SIP Waiting Time Set the timeout of STUN binding before sending SIP messages
Enable
Auto Answering Automatically answer incoming IP calls after the timeout period is
enabled
Auto
Answering Delay Automatic answer timeout setting
DTMF Type Set the DTMF type of the line.
DTMF SIP INFO mode
Set SIP INFO mode to send ‘
’ and ‘#’ or ‘10’ and ‘11’