Lenovo ThinkStation D20 (English) User guide - Page 51

Appendix A. Manual modem commands, Basic AT commands

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Appendix A. Manual modem commands The following section lists commands for manually programming your modem. Commands are accepted by the modem while it is in Command Mode. Your modem is automatically in Command Mode until you dial a number and establish a connection. Commands can be sent to your modem from a PC running communication software or any other terminal devices. All commands sent to the modem must begin with AT and end with ENTER. All commands can be typed in either upper or lower case, but not mixed. To make the command line more readable, spaces can be inserted between commands. If you omit a parameter from a command that requires one, it is just like specifying a parameter of 0. Example: ATH [ENTER] Basic AT commands In the following listings, all default settings are printed in bold text. Command A A/ D_ L P T W , @ ! ; DS=n E_ E0 E1 +++ H_ H0 H1 Function Manually answer incoming call. Repeat last command executed. Do not precede A/ with AT or follow with ENTER. 0 - 9, A-D, # and * last number redial pulse dialing Note: Pulse dialing is not supported for Australia, New Zealand, Norway, and South Africa. touch-tone dialing wait for second dial tone pause wait for five seconds of silence flash return to Command Mode after dialing Dial one of the four telephone numbers (n=0-3) stored in the modem non-volatile memory. Commands are not echoed Commands are echoed Escape Characters - Switch from Data Mode to Command Mode (T.I.E.S. Command) Force modem on-hook (hang up) Force modem off-hook (make busy Note: H1 command is not supported for Italy © Copyright Lenovo 2009, 2012 45

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Appendix A.
Manual modem commands
The following section lists commands for manually programming your modem.
Commands are accepted by the modem while it is in Command Mode. Your modem is automatically in
Command Mode until you dial a number and establish a connection. Commands can be sent to your modem
from a PC running communication software or any other terminal devices.
All commands sent to the modem must begin with
AT
and end with
ENTER
. All commands can be typed
in either upper or lower case, but not mixed. To make the command line more readable, spaces can be
inserted between commands. If you omit a parameter from a command that requires one, it is just like
specifying a parameter of
0
.
Example:
ATH [ENTER]
Basic AT commands
In the following listings, all default settings are printed in
bold text
.
Command
Function
A
Manually answer incoming call.
A/
Repeat last command executed.
Do not
precede
A/
with AT
or follow with ENTER.
D_
0 - 9, A-D, # and *
L
last number redial
P
pulse dialing
Note: Pulse dialing is not supported for Australia, New
Zealand, Norway, and South Africa.
T
touch-tone dialing
W
wait for second dial tone
,
pause
@
wait for five seconds of silence
!
flash
;
return to Command Mode after dialing
DS=n
Dial one of the four telephone numbers (n=0-3) stored in the
modem non-volatile memory.
E_
E0
Commands are not echoed
E1
Commands are echoed
+++
Escape Characters - Switch from Data Mode to Command
Mode (T.I.E.S. Command)
H_
H0
Force modem on-hook (hang up)
H1
Force modem off-hook (make busy
Note: H1 command is not supported for Italy
© Copyright Lenovo 2009, 2012
45