2N® LiftIP 2.0 User Manual
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Sending DTMF helps you set the method of sending DTMF characters from the device. Check the
opponent’s DTMF receiving options and settings to make the function work properly.
In-Band (Audio)
– enable the classic method of sending DTMF in the audio band using
standardized dual tones.
RTP (RFC-2833)
– enable DTMF sending via the RTP according to RFC-2833.
SIP INFO (RFC-2976)
– enable DTMF sending via SIP INFO messages according to
RFC-2976.
Receiving DTMF helps you set the method od receiving DTMF characters from the device. Check
the
opponent’s
DTMF sending options and settings to make the function work properly.
In-Band (Audio)
– enable classic DTMF dual tone receiving in the audio band.
RTP (RFC-2833)
– enable DTMF receiving via RTP according to RFC-2833.
SIP INFO (RFC-2976)
– enable DTMF receiving via SIP INFO messages according to
RFC-2976.
QoS DSCP Value
– set the audio RTP packet priority in the network. The set value is sent in
the TOS (Type of Service) field in the IP packet header. Enter the value as a decimal
number. A change of this parameter will not be applied until the device is restarted.
Jitter Compensation
– set the buffer length for compensation of interval unevenness in
audio packet arrivals. Set a higher value to increase the receiving immunity at the cost of a
higher sound delay.
