66.10.3 DTMF Parameters
The dual-tone multi-frequency (DTMF) parameters are described in the table below.
DTMF Parameters
Parameter Description
Web/EMS: DTMF Transport
Type
CLI: DTMF-transport-type
[DTMFTransportType]
Determines the DTMF transport type.
[0] Mute DTMF = DTMF digits are removed from the voice
stream and are not relayed to remote side.
[2] Transparent DTMF = DTMF digits remain in the voice
stream.
[3] RFC 2833 Relay DTMF = (Default) DTMF digits are
removed from the voice stream and are relayed to remote side
according to RFC 2833.
[7] RFC 2833 Relay Decoder Mute = DTMF digits are sent
according to RFC 2833 and muted when received.
Note: This parameter is automatically updated if the parameters
TxDTMFOption or RxDTMFOption are configured.
Web: DTMF Volume (-31 to 0
dB)
EMS: DTMF Volume (dBm)
CLI: DTMF-volume
[DTMFVolume]
Defines the DTMF gain control value (in decibels) to the PSTN or
analog side.
The valid range is -31 to 0 dB. The default is -11 dB.
Note: This parameter can also be configured in a Tel Profile.
Web: DTMF Generation Twist
EMS: DTMF Twist Control
CLI: DTMF-generation-twist
[DTMFGenerationTwist]
Defines the range (in decibels) between the high and low
frequency components in the DTMF signal. Positive decibel values
cause the higher frequency component to be stronger than the
lower one. Negative values cause the opposite effect. For any
parameter value, both components change so that their average is
constant.
The valid range is -10 to 10 dB. The default is 0 dB.
Note: For this parameter to take effect, a device reset is required.
EMS: DTMF Inter Interval
(msec)
CLI: inter-digit-interval
[DTMFInterDigitInterval]
Defines the time (in msec) between generated DTMF digits to
PSTN side (if TxDTMFOption = 1, 2 or 3).
The valid range is 0 to 32767. The default is 100 msec.
EMS: DTMF Length (msec)
[DTMFDigitLength]
Defines the time (in msec) for generating DTMF tones to the PSTN
side (if TxDTMFOption = 1, 2 or 3). It also configures the duration
that is sent in INFO (Cisco) messages.
The valid range is 0 to 32767. The default is 100.
EMS: Rx DTMF Relay Hang
Over Time (msec)
CLI: default-dtmf-signal-
duration
[RxDTMFHangOverTime]
digits to the Tel/PSTN side that arrive as Relay from the IP side.
Valid range is 0 to 2,000 msec. The default is 1,000 msec.
EMS: Tx DTMF Relay Hang
Over Time (msec)
CLI: digit-hangover-time-tx
[TxDTMFHangOverTime]
Defines the Voice Silence time (in msec) after detecting the end of
DTMF or MF digits at the Tel/PSTN side when the DTMF
Transport Type is either Relay or Mute.
Valid range is 0 to 2,000 msec. The default is 1,000 msec.
Web/EMS: NTE Max Duration
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