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Chapter 3 – Voice Commands
Command: +VTD
Description:
Beep Tone Duration Timer
This command causes the modem to set the default DTMF/tone generation duration.
Syntax: +VTD=<dur>
Values:
<dur>
Decimal number specifying the default DTMF/tone generation duration in
units of 0.01 second.
A value of 0 specifies the value entered by the S11 parameter (50-255 ms).
The range is 0.01 to 2.55 seconds for <dur> = 1 to 255.
Default:
Report Commands:
Command: +VDR
Note:
Description:
100 ms
+VTD? Reports current of selected values.
+VTD=? Reports supported range of parameter values.
Distinctive Ring
This command does not require the Voice Configuration commands to be set
before using it.
This command causes the modem to enable or disable reporting of the ring cadence
information and to control the timing of the RING event code report if ring cadence
reporting is enabled.
Syntax: +VDR=<enable>, <report>
Values:
<enable>
<report>
Decimal number corresponding to the selected option.
0 The modem will not report ring cadence information.
1 The modem will report ring cadence information as specified for the
<report> subparameter.
Decimal number specifying ring cadence information report when enabled by
the <enable> subparameter.
0 The modem will produce only DROF and DRON messages. The
modem will not produce any RING event codes. The modem will
report other call progress event codes as normal.
Other The modem will produce only DROF and DRON messages. The
modem will produce a RING event code after <report>/10 seconds
after the falling edge of the ring pulse (i.e., after the DRON report).
Defaults:
Report Commands:
Command: +VDT
Description:
0,0
+VDR? Reports current of selected values.
+VDR=? Reports supported range of parameter values.
Control Tone Cadence Reporting
This command is included for compatibility only and has no effect other than returning a
result code.
This command allows the modem to enable or disable reporting of the control tone
cadence information in the frequency band used by the Ringback/Remote Ring, BUSY,
and reorder/Fast Busy tones (usually in the 300 to 600 Hz range).
Syntax: +VDT=<enable>,<report>
Values:
<enable>
<report>
Decimal number corresponding to the selected option.
0 The modem will not produce any control tone cadence report.
Decimal number specifying the produced any control tone cadence report
when enabled by the <enable> subparameter.
0 The modem will produce only CPOF and CPON messages.
Other Reserved
Defaults:
Report Commands:
0,0
+VDT? Reports current of selected values.
+VDT=? Reports supported range of parameter values.
Multi-Tech Systems, Inc. AT Commands Reference Guide (S000273F)
35
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