IBM 2193 Modem commands, Executing commands, Command format, Modem information B-5, ATLEnter

Modem commands

This section provides information on the modem commands if you operate your modem from the DOS prompt using the AT command strings.

Executing commands

Your modem is in the Command Mode when powered-on and is ready to receive and execute AT commands. The modem remains in the Command Mode until it makes a connection with a remote modem. Commands may be sent to the modem from an attached terminal or a computer running a communication program.

The modem is designed to operate at common DTE speeds ranging from 300 bps to 115.2K bps. All commands and data must be issued to the modem using one of the valid DTE speeds.

Command format

All commands 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 may be typed in either upper or lower case, but not mixed. A command issued without any parameters is considered as specifying the same command with a parameter “0”.

Example:

ATL[Enter]

This command causes your modem to lower its speaker volume.

Modem information B-5