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16–12
• AT+FLO?
The DCE returns the current flow control setting, followed by the OK result code.
• AT+FLO=?
The DCE returns permitted flow control methods. The response is :
0,1,2
OK
Action Voice Commands for Voice Mode Operation
• AT+VIP
The DCE will initialize all voice parameters to the default settings as follows:
The DCE returns the OK result code if the DCE accepts this command or returns
the ERROR result code if the DCE is not connected to at least one voice I/O device.
• AT+VRX
The DCE starts the voice reception process by first returning the CONNECT result
code to the DTE. After this report, the DCE sends <DLE> shielded voice data to
the DTE. There are three ways to leave the Voice Receival State:
(1) The DTE sends a character other than <XON>, <XOFF> or a
shielded code.
Parameter Related Commands Default Value
Silence threshold +VSD 15
Hang-up code +VNH 0
Compression method +VSM 2 (2-bit ADPCM)
Beep tone interval +VTD 50 (unit: 10ms)
Inactivity timer +VIT 70 (unit: 0.1s)
Silence interval +VSD 70 (unit: 0.1s)
Ringback disappearance timer +VRA 70 (unit: 0.1s)
Ringback non-appearance timer +VRN 10 (unit: 1s)
Receival Gain +VGR 0
Transmission Gain +VGT 128
Resync timer +VSY 0 (disabled)
DTMF detection interval
and threshold
+VDD 8 (unit: 5ms)
5
Flow control method +FLO 1 (software)