Actiontec electronic IS560LH user manual AT Commands, +++ Escape sequence, Repeat Last Command

Appendix A: AT Command Set

AT Commands

AT commands are issued to the modem to control the modem’s operation and soft- ware configuration. AT commands can only be entered while the modem is in com- mand mode. Enter AT commands by typing:

ATXn

where X is the AT command, and n is the specific value for that command. Press

ENTER.

Any command issued is acknowledged with a response in either text or numeric values known as result codes. To issue multiple AT commands on the same command line, the commands are executed in the order they are received. Should execution of a command result in an error, or a character not be recognized as a valid command, execution is terminated, the remainder of the command line is ignored, and the ERROR result code is issued. Otherwise, if all commands execute correctly, only the result code associated with the last command shall be issued; result codes for preced- ing commands are suppressed.

In the following listing all commands and command values accepted by the modem are shown. Any entries other than those shown cause the ERROR result code.

+++Escape sequence

The escape sequence allows the modem to exit data mode and enter on-line com- mand mode. While in on-line command mode, you may communicate directly to your modem using AT commands. Once you are finished, you may return to data mode using the ATO command. A pause, the length of which is set by the Escape Guard Time S-Register (S12), must be used after an escape sequence is issued. This pause prevents the modem from interpreting the escape sequence as data. The value of the escape sequence character may be changed using Register S2.

A/ Repeat Last Command

This command repeats the last command string entered. Do not precede this com- mand with an AT prefix or conclude it by pressing Enter.

A Answer Command

This command instructs the modem to go off-hook and answer an incoming call.

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