127
DTMF
To display and configure DTMF settings.
Type:
Support Inband, Info, RFC2833 or their combination.
How to Notify DTMF:
Only available when DTMF Type is
Info/Info+Inband/Info+RFC2833.
DTMF Payload:
To configure payload type for DTMF.
Note:
By default, DTMF type is RFC2833 which is the standard. Type
Inband uses inband frequency to indicate DTMF tone which is most
used to be compatible to traditional telephone server. Type Info uses SIP
Info message to indicate DTMF message.