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536EX Chipset Developer’s Manual 73
Intel Confidential
IS-101 Voice Mode AT Commands
+VDR=m see ‘m’
Distinctive Ring Selection: This command contains two parameters. The first selects whether the
modem reports distinctive ring cadence information. The second parameter controls the timing of the
RING event code report.
m=<enable>, <report>
Defaults = 0, 0
<enable> Ring Reporting: The DCE reports the length of the ring period.
Range: <enable> = 0–255 (enables/disables distinctive ring reporting in the form DROF=<number in
units of 0.1 seconds><CR><LF>)
<report> Time Ring Reporting: The DCE reports the silence period’s length. The DCE may produce
a RING event code after the DRON message if enabled by the <report> parameter. The <report>
parameter should be set to a value larger than the expected off-times within a single pattern so the
RING even reports are issued only during the off-times between the complex patterns.
Range: <report> = 0–255 (reporting type in the form DROF=<number in
units of 0.1 seconds>)
Regardless of its setting, the +VDR command can be disabled by the +VEM command.
Table 25. Voice Mode Command Descriptions (Continued)
Command Default Description
NOTE: An asterisk (*) denotes the factory-default setting.
<enable> <report> Function
0 – Distinctive ring disabled
10
The modem reports DROF and DRON messages but does not report RING
messages
1 non-0 The modem reports DROF, DRON and RING messages
2–255 – Reserved