46
ERROR Otherwise
Command options:
#VSK? Returns the current setting of the #VSK command as an ASCII
decimal value in result code format.
#VSK=? Returns the message,"255".
#VSK=n n defines the 255 unused bytes remaining in the modem voice
transmit buffer after an XOFF is sent to the DTE.
AT#VSP Silence Detection Period (Voice Receive)
This command sets the Voice Receive Mode silence detection period
(inactivity timer) value. The parameter, in units of 100ms, can be
used when receiving voice data. This is an amount of time, which if
elapsed without receiving any ADPCM data, causes the modem to send the
<DLE>s or <DLE>q codes after insuring that the buffer is empty. There
are two cases:
1. With the modem's silence deletion feature enabled, the #VSP setting
is in effect an inactivity timer. The modem must reset this timer
on every byte of voice data received.
2. With the modem's silence deletion feature disabled, the modem
determines what constitutes silence. This involves monitoring and
debouncing the modem value for average energy. If this debounced
value is less than an arbitrary threshold constituting the modem's
definition of silence for a period greater than that defined by the
#VSP setting, the modem sends the <DLE>q or <DLE>s shielded code
to the DTE.
Parameters: n=0-255 (0-25.5 seconds); Default: 55 (5.5 seconds)
Result Code: OK If n=0-255.
ERROR Otherwise.
Command options:
#VSP? Returns the current setting of the #VSP command as an ASCII
decimal value in result code format.
#VSP=? Returns the message, "0-255".
#VSP=0 Turns off the silence period detection timer.
#VSP=n Where n defines the period without received voice data in 100
ms units.
AT#VSR Sampling Rate Selection
This parameter, along with the bits per sample (#VBS) command,
determines the necessary DTE interface speed to transmit and receive
in the Voice Mode.
Parameter: n=7200 (Fixed at 7200 Hz sampling rate)
Result Codes: OK If n=7200
ERROR Otherwise
Command options:
#VSR? Returns the current setting of the #VSR command as an ASCII
decimal value in result code format.
#VSR=? Returns the message, "7200".
#VSR=7200 Default.
AT#VSS Silence Detection Tuner (Voice Receive)
This command enables or disables the Voice Receive mode silence
detection, and controls the sensitivity employed by the modem in
compressing periods of silence.
Parameters: n=0-3; Default: 2
Result Codes: OK If n=0-3
ERROR Otherwise
