Actiontec electronic 56K/V.92 user manual Command Format, Basic AT Commands

AT Commands A

To access the Modem manually, use AT commands. AT commands can be sent to the Modem from a computer running a communications program.

Command Format

All commands must begin with the AT prefix, followed by the parameter, and end- ing by pressing the Enter key on the keyboard. All commands can be entered in either all upper– or all lower–case, but not upper– and lower–case mixed together. A command entered without any parameters automatically specifies the same com- mand with a parameter of “0.” The maximum length of a command is eight (8) characters. The Modem does not count the AT prefix, carriage returns, or spaces.

For example, entering the command

ATH

causes the modem to hang up.

Basic AT Commands

In the following lists, the commands are in bold text, followed by a short function- al description. Default settings are noted with an asterisk (*).

A/ Repeat last command (do not precede this command with AT or follow by pressing the Enter key)

AAnswer

D_ Dial command

PSelect pulse dialing (affects current and subsequent dialing)

TSelect tone dialing (affects current and subsequent dialing)

En Command echo

E0 Disables echo

E1 Enables echo*

Hn Switch hook control

31