Toshiba TECRA A8 User Manual page 221

Hn Hook control
This command instructs the modem to go on-hook to disconnect a call, or
off-hook to make the phone line busy.
In Request ID information
This command displays product information about the modem.
Ln Monitor speaker volume
This command sets speaker volume to low, medium, or high.
Mn Monitor speaker mode
This command turns the speaker on or off.
User's Manual
E0 Disables echo to the computer.
E1 Enables echo to the computer (default).
Result Codes:
n=0,1
OK
ERROR Otherwise
H0 Modem goes on-hook (default).
H1 Modem goes off-hook.
Result Codes:
n=0,1
OK
ERROR Otherwise
I0 Returns modem identity string and driver version number.
I3 Same as I0.
I9 Returns region ID in English.
Result Codes:
n=0,3,9
OK
ERROR Otherwise
L0 Low volume.
L1 Low volume. (Same as L0)
L2 Medium volume (default).
L3 High volume.
Result Codes:
n=0,1,2,3
OK
ERROR Otherwise
M0 The speaker is off.
M1 The speaker is on until the modem detects the carrier signal
(default).
M2 The speaker is always on when modem is off-hook.
M3 Speaker is on until the carrier is detected, except when
dialing.
AT Commands
C-3