Chapter 4

AT Commands

In most cases, you will not need to type AT commands manually. However, there may be some occasions when you will need to do so.

This chapter describes AT commands for data mode. Fax commands are issued by application software.

AT command formats

The format for entering AT commands is:

ATXn

where X is the AT command, and n is the specific value for some of the commands. After you type in the command, press Enter.

Any command issued is acknowledged with a response in either text or numeric values known as result codes.

All commands and command-values accepted by the modem are described in this section; any entry other than those listed results in an error.

If no value is entered for n, then the command defaults to a value of n=0.

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