Multi-Tech Systems MT5600SMI-PL92 manual Command +VGT Voice Gain Transmit Playback Volume, 106

	Chapter 7 – Voice Commands
Command: +VGT	Voice Gain Transmit (Playback Volume)
Description:	This command causes the modem to set the volume level.
Syntax:	+VGT=<level>
Defined Values:	<level> Decimal number corresponding to the volume level.
Reporting Current or Selected Values:
	Command: +VGT?
	Response: <level>

	Example: 128 For the default setting.
Reporting Supported Range of Parameter Values:
	Command: +VGT=?
	Response: <level> range
	Example: 0-255
Result Codes:	OK <level> = 0-255.
	ERROR Otherwise, or if not in Voice Mode.

Command: +VIT	Voice Inactivity Timer (DTE/Modem)
Description:	This command sets the modem’s initial value for the DTE/modem inactivity
	timer.
Syntax:	+VIT=<timer>
Defined Values:	<timer> Decimal number corresponding to the time in units of 1.0 second.
	A value of 0 disables the timer.
Reporting Current or Selected Values:
	Command: +VIT?
	Response: <timer>

	Example: 0 For the default setting.
Reporting Supported Range of Parameter Values:
	Command: +VIT=?
	Response: <timer> range
	Example: 0-255
Result Codes:	OK <timer> = 0-255.
	ERROR Otherwise, or if not in Voice Mode.

Multi-Tech Systems, Inc. SocketModem MT5600SMI Developer’s Guide 106