ZyXEL Communications 56K Plus Series - Manual (Page 45)

Omni 56K Plus Series User’s Guide
Command Sets 4-17
Table 4-12 Voice AT Commands
COMMAND FUNCTION OPTION DEFAULT DESCRIPTION
+VGR Set the gain
for the
received
voice sample. 0 0 0: Automatic gain control(AGC)
+VGT Set the gain
for the
transmitted
voice sample. 0-255 128 0: Silence
1-255: The larger the value, the louder the
voice will be.
+VLS Select a voice
I/O device. 0,1, 2 0 0: The DCE is on hook. Local phone
connected to Telco line.
1: The DCE is on-hook and is connected to the
local phone. The local phone is also provided
with power. The modem can record/play
through the local phone set.
2: The DCE is off-hook and is connected to the
Telephone line. The local phone is provided
with power. The modem can record/play
through the local telephone line.
+VRA Ring back
goes away
timer
0 – 255 70 0: turn off the timer
1-255: Defines the period without ringback
(after at lease one ringback has been
detected) in 100 -ms units.
+VRN Ring back
never come
timer
0 – 255 10 0: turn off the timer
1-255: Defines the period without ringback
after dialing in 1 sec unit.
+VTX Voice transmit
mode
NA NA Switches to voice transmit mode.
+VSD Silence
detection
Threshold,
Period
(0-255), (0-255)
15,70 Threshold:
0: Disable silence detection.
1-255: The smaller the value, the more
sensitive to the silence detection it will be.
Period:
1-255: The required period of silence detection
before DCE reporting the silence event.
0: Disable silence detection.
Unit: 0.1 second
+VSM Selection of
compression
method
4;ZyXEL ADPCM;
4 Bit;(9600) 4,9600 IMA 4 bit ADPCM.
Sample rate: 9600
+VTS=
[x,y,z] Dual Tone
Generation x: 0-3000 Hz
y: 0-3000 Hz
z: 0- 1000(10ms)
NA x: first tone frequency
y: second tone frequency
z: duration in 10ms unit
+VTS=
{x,y} DTMF Tone
Generation x:0-9,*,#, A-D
y:0-1000 (10ms)
NA x: DTMF digits (0-9,*,#, A,B,C,D)
y: duration in 10ms unit