User`s guide

AT Command Summary
Command
Description
+++
Escape code
A/
Repeat last command string
AT
Attention
A Answer Immediate (Incoming call)
B0 CClTT V.22 protocol at 1200 bps
B1 Bell 103/212A protocol at 1200 bps
D
Dial; originates a call
E0
Echo off (command mode)
El Echo on (command mode)
HO On hook; hang up immediate
H1 Off hook; ready to dial
0
Returns modem’s product ID code
I
1 Returns modem’s ROM checksum
I
2
Tests modem's internal memory
I
3 Speaker volume high
I
MO Speaker always off
Ml
Speaker on until carrier is detected
M2 Speaker always on
M3
Speaker on after last digit dialed; off when carrier is
detected
O0
Return on-line
O1
Return on-line and initiate equalizer retrain (2400 bps)
Q0 Result codes on
Q1
Result codes off
Sr
Sets pointer to register r
B-2 Fax/Modem Command Set