PioneerPOS G24-LC Manual Do Utilizador

An AT command line may contain one or more commands. Delimiters are used to separate the 
commands from each other, according to the following structure:

Each AT command has the "AT" prefix string.

Each AT command has the suffix <CR>.

The delimiter is either a semicolon ";" or none, meaning space (basic commands).

Each AT command has the following structure:

The following figure outlines the basic structure of an AT command line:

The following rules must be observed when issuing a command line to the modem:

Every command line must begin with the letters AT.

Several commands can be concatenated as one line, as long as the total line does not exceed 
140 characters with semicolon characters.

Characters:

Spaces are ignored. You can leave spaces between each command and between characters of a 
command. You can also include punctuation in telephone numbers, and type commands in either 
UPPERCASE or lowercase. For example, the following commands are identical: 

ATDT8005551234 < Enter > or 

atdt (800) 555-1234 < Enter >

Backspace <S5> character is allowed. 

To cancel a dialing command in progress, send any ASCII character to the modem.

To execute the command line, send the <CR> ASCII character.

Prefix

Command1

Delimiter

Command2

Delimiter

…

CommandN

Suffix

Token

Mode

Arguments

ATCMD1 CMD2=12; +CMD1; +CMD2=,,15; +CMD2?; +CMD2=?<CR>

Command

line prefix

Basic command

(no + prefix)

Subparameters
may be omitted

Extended command

(prefixed with +)

Test command for checking

possible subparameter values

Extended commands are

delimited with semicolon

Command line

termination character

Subparameter

Read command for checking
current subparameter values