Product data

USRobotics
Command Reference
Voice Commands - 140
Example: +VRN: 10 (10 seconds) For the default setting.
Reporting Supported Range of Parameter Values
Command: +VRN=?
Response: +VRN: (<interval> range)
Example: +VRN: (0-255)
Result Codes
OK <interval> = 0-255
ERROR Otherwise, or if not in Voice Mode.
+VSD - Silence Detection (Quiet and Silence)
This command causes the modem to set the silence detection sensitivity and the
required period of silence before the modem reports silence detected at the end of
a voice receive either with the "Presumed End of Message" (QUIT) or "Presumed
Hangup (SILENCE) event reports.
Syntax
+VSD=<sds>,<sdi>
Defined Values
<sds> Decimal number corresponding to the selected parameter.
0 Use +VSM silence compression setting and algorithm for long-
term silence detection (if +VSM is in use) or proprietary silence
compression setting and algorithm for long-term silence detection
(if +VSM is not in use).
127 Sets less aggressive long-term silence detection independent of
presence or use of silence compression.
128 Sets nominal long-term silence detection independent of
presence or use of silence compression.
129 Sets more aggressive long-term silence detection independent of
presence or use of silence compression.
<sdi> Decimal number specifying the required period of silence, in units
of 0.1 second, before the modem can report silence detected at
the end of a voice receive either with the "Presumed End of
Message" (QUIT) or "Presumed Hangup (SILENCE) event
reports. A value of 0 disables the modem silence detection. The
range is 0.1 to 25.5 seconds for <sdi> = 1 to 255.