Dtmf Parameters; Table 6-56: Dtmf Parameters - AudioCodes Mediant 2000 User Manual

SIP User's Manual

6.16.5 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]
EMS: DTMF Inter Interval
(msec)
[DTMFInterDigitInterval]
EMS: DTMF Length (msec)
[DTMFDigitLength]
EMS: Rx DTMF Relay Hang
Over Time (msec)
[RxDTMFHangOverTime]
Web/EMS: RFC 2833 Payload
Type
[RFC2833PayloadType]
Version 5.8

Table 6-56: 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
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.
Defines the Voice Silence time (in msec units) after playing DTMF
or MF 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.
The RFC 2833 DTMF relay dynamic payload type.
The valid range is 96 to 99, and 106 to 127. The default is 96. The
100, 102 to 105 range is allocated for proprietary usage.
Notes:

Certain vendors (e.g., Cisco) use payload type 101 for RFC
2833.

When RFC 2833 payload type (PT) negotiation is used (the
parameter TxDTMFOption is set to 4), this payload type is used
for the received DTMF packets. If negotiation isn't used, this
payload type is used for receive and for transmit.
377
6. Configuration Parameters Reference
Description
PSTN side.
October 2009