Toshiba Libretto U100 - Manual (Page 205)

User’s Manual C-3
AT Commands
En Echo command
This command controls whether or not the characters entered from your
computer keyboard are displayed on your monitor (echoed) while the
modem is in command mode.
Result Codes:
OK
n=0,1
ERROR
Otherwise
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.
Result Codes:
OK
n=0,1
ERROR
Otherwise
In Request ID information
This command displays product information about the modem.
Result Codes:
OK
n=0,3,9
ERROR
Otherwise
Ln Monitor speaker volume
This command sets speaker volume to low, medium, or high.
Result Codes:
OK
n=0,1,2,3
ERROR
Otherwise
E0 Disables echo to the computer.
E1 Enables echo to the computer (default).
H0 Modem goes on-hook (default).
H1 Modem goes off-hook.
I0 Returns modem identity string and driver version number.
I3 Same as I0.
I9 Returns region ID in English.
L0 Low volume.
L1 Low volume. (Same as L0)
L2 Medium volume (default).
L3 High volume.