Tone Detection Parameters

The signal tone detection parameters are described in the table below.

Tone Detection Parameters

Parameter

Description

dtmf-detector-enable

[DTMFDetectorEnable]

Enables the detection of DTMF signaling.

■ [0] = Disable
■ [1] = (Default) Enable

mfr1-detector-enable

[MFR1DetectorEnable]

Enables the detection of MF-R1 signaling.

■ [0] = (Default) Disable
■ [1] = Enable

mf-transport-type

[MFTransportType]

Defines the method for sending MF digits over the network to the remote side.

■ [0] = (Mute) MF digits are erased from the audio stream and are not relayed to the remote side. Instead, silence is sent in the RTP stream.
■ [2] = (Transparent) MF digits are left in the audio stream and MF relay is disabled.
■ [3] = (Default) (RFC 2833 Relay) MF digits are relayed to the remote side using the RFC 2833 Relay syntax.

[R1DetectionStandard]

Determines the MF-R1 protocol used for detection.

■ [0] = (Default) ITU
■ [1] = R1.5

Note: For the parameter to take effect, a device restart is required.

user-defined-tones-detector-enable

[UserDefinedToneDetectorEnable]

Enables the detection of User Defined Tones signaling, applicable for Special Information Tone (SIT) detection.

■ [0] = (Default) Disable
■ [1] = Enable

sit-detector-enable

[SITDetectorEnable]

Enables SIT detection according to the ITU-T recommendation E.180/Q.35.

■ [0] = (Default) Disable
■ [1] = Enable

To disconnect IP-to-ISDN calls when a SIT tone is detected, configure the following parameters:

■ [SITDetectorEnable = 1]
■ [UserDefinedToneDetectorEnable = 1]
■ [ISDNDisconnectOnBusyTone = 1] (applicable for Busy, Reorder and SIT tones)

Another parameter for handling the SIT tone is [SITQ850Cause], which defines the Q.850 cause value specified in the SIP Reason header that is included in a 4xx response when a SIT tone is detected on an IP-to-Tel call.

To disconnect IP-to-Tel calls when a SIT tone is detected, configure the following parameters:

■ [SITDetectorEnable = 1]
■ [UserDefinedToneDetectorEnable = 1]
■ [DisconnectOnBusyTone = 1] (applicable for busy, reorder, and SIT tones)

Note:

■ For the parameter to take effect, a device restart is required.
■ The IP-to-ISDN call is disconnected on detection of a SIT tone only in call alert state. If the call is in connected state, the SIT doesn't disconnect the call. Detection of busy or reorder tones disconnect these calls also in call connected state.

udt-detector-frequency-deviation

[UDTDetectorFrequencyDeviation]

Defines the deviation (in Hz) allowed for the detection of each signal frequency.

The valid range is 1 to 50. The default is 50.

Note: For the parameter to take effect, a device restart is required.

cpt-detector-frequency-deviation

[CPTDetectorFrequencyDeviation]

Defines the deviation (in Hz) allowed for the detection of each CPT signal frequency.

The valid range is 1 to 30. The default is 10.

Note: For the parameter to take effect, a device restart is required.