2N EasyGate IP User Manual page 55

5.4.2 SIP miscellaneous
The SIP miscellaneous folder helps you set other tone dialing properties.
DTMF transmission – set the DTMF transmission method:
inBand
RTP DTMF
info (RFC(2976)
Auto delay – set the sound delay timeout in ms in the range of 0 to 2000 ms.
Used for DTMF suppression in the voice channel. The minimum DTMF
suppression timeout is 50 ms.
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