Filter
Top Products
Chapter 10 - Voice Mode Operation
10-14
<method> Flow Control Method
0 XON/XOFF and RTS/CTS flow control turned off
1 Use software XON/XOFF flow control in either direction.
2 Use hardware RTS/CTS flow control.
The DCE returns the OK result code if the DCE accepts the command. The DCE
returns the ERROR result code if the <method> subparameter is out of range.
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
Voice Mode Action Commands
AT+VIP
The DCE will initialize all voice parameters to the default settings as follows:
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: 10 ms)
Inactivity timer +VIT 70 (unit: 0.1 s)
Silence interval +VSD 70 (unit: 0.1 s)
Ringback timer +VRA 70 (unit: 0.1 s)
Ringback timer +VRN 10 (unit: 1 s)
Reception Gain +VGR 0
Transmission Gain +VGT 128
Resync timer +VSY 0 (disabled)
DTMF detection
intervaland threshold
+VDD 8 (unit: 5 ms) 5
Flow control method +FLO 1 (software)
The DCE returns the OK result code if DCE accepts this command or returns the
ERROR result code if the DCE is not connected
AT+VRX
The DCE starts the voice reception process by first returning the CONNECT
result code to the DTE. After this is reported, the DCE sends <DLE> shielded
voice data to the DTE. There are three ways to leave the Voice State:
1. The DTE sends a character other than <XON>, <XOFF> or a shielded code.