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Chapter 10 - Voice Mode Operation
10-17
The DCE returns the result code OK if DCE accepts this command, or it returns
the result code ERROR if the <level> parameter is out of range.
AT+VGT?
The DCE returns the current gain, followed by the OK result code.
AT+VGT=?
The DCE returns permitted values for the gain. The response is:
56-200
OK
AT+VIT=<timer>
This command sets the inactive time-out value for the DTE/DCE Inactivity Timer.
The default value is 7 seconds. Acceptable values are 0 to 255 with a unit of 0.1
second. The DTE can disable the Inactivity Timer by setting the value to zero.
The DCE returns the OK result code if DCE accepts this command, or it returns
the ERROR result code if <timer> is out of range.
AT+VIT?
The DCE returns the current Inactivity Timer timeout value, followed by the OK
result code.
AT+VIT=?
The DCE returns the permitted Inactivity Timer timeout values. The units are in
0.1 seconds. The response is :
0-255
OK
AT+VLS=<device>
This command causes the DCE to select a voice I/O device. The permitted
<device> is as follows:
<device> Description
0 No voice I/O devices connected. Local phone connects to telco line.
The DCE is on-hook.
1 Voice I/O through local phone connected to POTS Port. Local Phone
provided with power to detect hook condition. The DCE is on-hook.
2 Voice I/O through Telco Line. The DCE is off-hook.
8 Voice Input through External Microphone. Local phone connects to
Telco Line. The DCE is on-hook.
16 Voice output to Internal Speaker. Local Phone connects to Telco Line.
The DCE is on-hook.