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SIP User's Manual
Parameter
EMS: Bell Transport Type
[BellModemTransportType]
6.16.3 DTMF Parameters
The Dual-tone multi-frequency (DTMF) parameters are described in the table below.
Parameter
Web/EMS: DTMF Transport Type
[DTMFTransportType]
Web: DTMF Volume (-31 to 0 dB)
EMS: DTMF Volume (dBm)
[DTMFVolume]
Web: DTMF Generation Twist
EMS: DTMF Twist Control
[DTMFGenerationTwist]
[DTMFInterDigitInterval]
[DTMFDigitLength]
Version 5.8
Determines the Bell modem transport method.
[0] = Transparent (default).
[2] = Bypass.
[3] = Transparent with events.
Table 6-55: DTMF Parameters
Determines the DTMF transport type.
[0] DTMF Mute = Erases digits from voice stream and
doesn't relay to remote.
[2] Transparent DTMF = Digits remain in voice
stream.
[3] RFC 2833 Relay DTMF = Erases digits from voice
stream and relays to remote according to RFC 2833
(default).
[7] RFC 2833 Relay Rcv Mute = DTMFs are sent
according to RFC 2833 and muted when received.
Note: This parameter is automatically updated if the
parameters TxDTMFOption or RxDTMFOption are
configured.
DTMF gain control value (in decibels) to the or analog
side.
The valid range is -31 to 0 dB. The default value is -11
dB.
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 value is 0 dB.
Note: For this parameter to take effect, a device reset is
required.
Time in msec between generated DTMF digits to PSTN
side (if TxDTMFOption = 1, 2 or 3).
The default value is 100 msec. The valid range is 0 to
32767.
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 value is 100.
431
6. Configuration Parameters Reference
Description
Description
October 2009
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