User's Guide for ZyXEL Omni 56K USB Modem

5-19

n=3:9600 bps
n=4:12000 bps
n=5:14400 bps
+FBS? Buffer Size 512, 256
5.2.4 Voice AT Commands

Table 21. Voice AT Commands

COMMAND FUNCTION OPTION DEFAULT DESCRIPTION
+FLO Flow control
select 0, 1, 2 20: No flow control.
1: (XON/XOFF) Software flow control.
2: (RTS/CTS) Hardware flow control.
+VIP Initialize
parameters N/A N/A +VSD=15, 70 (15*4, 7 second)
+VTD=100 (1 second)
+VRN=10 (10 second)
+VRA=70 (7 second)
+VGR=0 (Enable AGC)
+VGT=128
+FLO=2 (RTS/CTS)
+VIT=70 (7 second)
+FCLASS Voice/data/
fax selection 0, 1, 2.0, 8 00: DATA.
1: CLASS 1 FAX.
2.0: CLASS 2.0 FAX.
8: VOICE.
+FMI? Manufacturer
ID N/A ZyXEL
+FMM? Model ID N/A Omni 56K
USB
+FMR? Revision N/A Vx.xx
+VRX Voice
Recording N/A N/A Start recording.
+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 to 255 128 0: Silence.
1 to 255: The larger the value, the louder the
voice.