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Modem information
B-7
Table1: AT commands (Continued)
Command
Function
I2
ROM test
I3
Firmware and device ID
L0
Low speaker volume
L1
Low speaker volume
L2
Medium speaker volume
L3
High speaker volume
M0
Speaker always off
M1
Speaker on until carrier detected
M2
Speaker always on
O0
Return to data mode
O1
Initiate an equalizer retrain and return to data mode
P
Pulse dial
Q0
Result codes enabled
Q1
Result codes disabled
Sr?
Read S register r, where r=0-95
Sr=n
Set S register r to value n (r=0-95; n=0-255)
T
Tone dial
V0
Numeric responses
V1
Text responses
X0
Hayes Smartmodem 300 compatible responses/blind dialing