AOpen FM56, Manual, Page: 114 / 127

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.
5.2.2.14 +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.
1 The modem will report ring cadence information as specified for the <report>
subparameter.
<report> 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).
Reporting Current or Selected Values
Command: +VDR?
Response: +VDR: <enable>,<report>
Example: +VDR: 0,0 For the default setting.
Reporting Supported Range of Parameter Values
Command: +VDR=?
Response: +VDR: (<enable> range),(<report>range)
Example: +VDR: (0,1),(0-10)
Result Codes
OK <enable>,<report> = (0,1),(0-10)
ERROR Otherwise.
5.2.2.15 +VDT - Control Tone Cadence Reporting
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 300to 600 Hz range).