Lenovo ThinkPad i Series 1157 ThinkPad 570 On-line User's Guide - Page 125

Appendix B. Using modem commands, Modem commands, Running commands, Command format, AT commands

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Appendix B. Using modem commands Modem commands This section provides information on the AT modem commands in case you need to operate your modem from the DOS prompt. Running commands Your modem is in command mode at power-on and is ready to receive and run AT commands. The modem remains in command mode until it makes a connection with a remote modem. Commands might be sent to the modem from an attached terminal or a PC running a communication program. The modem is designed to operate at common DTE speeds ranging from 115.2 Kbps (or 57.6 Kbps) to 300 Kbps. All commands and data must be issued to the modem using one of the valid DTE speeds. Command format All commands (except A/) must begin with the AT prefix, followed by the command letter and ended with the Enter key. Spaces are allowed in the command string to increase command readability but are ignored by the modem during command execution. All commands might be typed in either upper case or lower case, but not mixed. A command issued without parameter is considered as specifying the same command with a parameter "0." Example: ATL[Enter] This command causes your modem to lower its speaker volume. AT commands Command A Function Answers incoming call. Copyright IBM Corp. 1999 119

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Appendix B.
Using modem commands
Modem commands
This section provides information on the AT modem commands in
case you need to operate your modem from the DOS prompt.
Running commands
Your modem is in command mode at power-on and is ready to
receive and run AT commands.
The modem remains in command
mode until it makes a connection with a remote modem.
Commands
might be sent to the modem from an attached terminal or a PC
running a communication program.
The modem is designed to operate at common DTE speeds ranging
from 115.2 Kbps (or 57.6 Kbps) to 300 Kbps.
All commands and
data must be issued to the modem using one of the valid DTE
speeds.
Command format
All commands (except
A/
) must begin with the
AT
prefix, followed by
the command letter and ended with the
Enter
key.
Spaces are
allowed in the command string to increase command readability but
are ignored by the modem during command execution.
All
commands might be typed in either upper case or lower case, but
not mixed.
A command issued without parameter is considered as
specifying the same command with a parameter “0.”
Example:
ATL[Enter]
This command causes your modem to lower its speaker volume.
AT commands
Command
Function
A
Answers incoming call.
Copyright IBM Corp. 1999
119