<> The term enclosed in angle brackets is a syntactical element. The brackets do not appear in the command line.

[ ]

Square brackets are used to indicate that a certain item

 

is optional. For example, sub-parameters of a command

 

or an optional part of a response. The brackets do not

 

appear in the command line.

Value

The default values of the supported parameters are

 

indicated by using bold text when presenting the value.

Other characters, including ‘?’, ‘=’, parenthesis, etc., appear in commands and responses as written.

The final result codes OK, ERROR, +CME ERROR: <err> and CMS ERROR:<err> (see sections AT Response Syntax

are not listed under “Possible Responses” for each AT command. OK and ERROR are listed if these are the only possible responses.

1.2.2AT Command Syntax

The AT standard is a line-oriented command language. Each command is made up of the following three elements:

the prefix; the body;the termination character.

The prefix consists of the letters “AT”, which are derived from the first two letters of the word attention. The body is made up of the command, the parameter, and if applicable the associated values.

Commands may be combined in the same command line. Spaces between the individual bodies are ignored.

Basic Syntax Command

The format of basic syntax commands is as follows:

AT<command>[=][<parameter>]<OK>

Example!_ ATL=0<CR> (sets the volume of the speaker)

Additional commands may follow a command on the same command line without any character being required for separation. For the command D parameters, see the description for the command in question.

Owner’s Manual

Rev 1.0

Page 56 of 56