Omni 56K USB Lite
5-12
Command Sets
COMMAND
FUNCTION
OPTION
DEFAULT
DESCRIPTION
+VRA
Ring back
goes away
timer
0 to 255
70
0: turn off the timer.
1 to 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 to 255
10
0: turn off the timer.
1 to 255: Defines the period without
ringback after dialing in 1 sec unit.
+VTX
Voice
transmit
mode
N/A
N/A
Switches to voice transmit mode.
+VSD
Silence
detection
Threshold,
Period
(0 to 255), (0 to
255)
70, 70
Threshold:
0: Disable silence detection.
1 to 255: The smaller the value, the
more sensitive to the silence detection
it is.
Period:
1 to 255: The required period of
silence detection before DCE
reporting the silence event.
0: Disable silence detection.
Unit: 0.1 second.
+VSM
Select
compression
method
4; ZyXEL
ADPCM; 4 Bit;
(9600)
4, 9600
IMA 4 bit ADPCM. (4: DigiSpeech
IMA; 5: DVI Intel IMA)
Sample rate: 9600/8000.
+VTS= [x,
y, z]
Dual Tone
Generation
x: 0 to 3000 Hz
y: 0 to 3000 Hz
z: 0 to 1000
(10ms)
N/A
x: first tone frequency.
y: second tone frequency.
z: duration in 10ms unit.
+VTS= {x,
y}
DTMF Tone
Generation
x: 0 to 9, *, #, A
to D
y: 0 to 1000
(10ms)
N/A
x: DTMF digits (0 to 9, *, #, A, B, C, D)
y: duration in 10ms unit.
+VTS= x,
x…
DTMF Tone
Generation
x: 0 to 9, *, #, A
to D
N/A
x: DTMF digits (0 to 9, *, #, A, B, C, D)
Duration: +VTD setting (in 10ms unit).
