IBM Aptiva Handbook page 147

Table 1: AT commands (Continued)
Command
I2
I3
L0
L1
L2
L3
M0
M1
M2
O0
O1
P
Q0
Q1
Sr?
Sr=n
T
V0
V1
X0
ROM test
Firmware and device ID
Low speaker volume
Low speaker volume
Medium speaker volume
High speaker volume
Speaker always off
Speaker on until carrier detected
Speaker always on
Return to data mode
Initiate an equalizer retrain and return to data mode
Pulse dial
Result codes enabled
Result codes disabled
Read S register r, where r=0-95
Set S register r to value n (r=0-95; n=0-255)
Tone dial
Numeric responses
Text responses
Hayes Smartmodem 300 compatible responses/blind dialing
Function
Modem commands B-7