Product data

USRobotics
Command Reference
Voice Commands - 143
+VTD - Beep Tone Duration Timer
This command causes the modem to set the default DTMF/tone generation
duration.
Syntax
+VTD=<dur>
Defined Values
<dur> Decimal number specifying the default DTMF/tone generation
duration in units of 0.01 second. A value of 0 specifies a
manufacturer specific time interval. The range is 0.01 to 5
seconds for <dur> = 1 to 500.
Reporting Current or Selected Values
Command: +VTD?
Response: +VTD: <dur>
Example: +VTD: 0 For the default setting.
Reporting Supported Range of Parameter Values
Command: +VTD=?
Response: +VTD: (<dur> range)
Example: +VTD: (0-500)
Result Codes
OK <dur>= 0-500.
ERROR Otherwise, or if not in Voice Mode.
+VDR - Distinctive Ring
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>
Defined Values
<enable> Decimal number corresponding to the selected option.
0 The modem will not report ring cadence information.