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FIBOCOM L860 AT Commands User Manual
Page 12 of 254
2.5 AT Commands Structure
2.4.1 General Symbols Used in AT Commands Description
The following syntax definitions apply in this chapter:
Syntax
Definition
<CR>
Carriage returns character, specified by the value of the S3-register.
<LF>
Line-feed character, specified by the value of the S4-register.
<…>
Name enclosed in angle brackets is a syntax element. The brackets themselves
do not appear in the command line.
[...]
Optional sub-parameter of a command or an optional part of terminal information
response, enclosed in square brackets. The brackets themselves do not appear
in the command line. When the sub-parameter is not provided in the parameter
type commands, the new value equals its previous value. In action type
commands, the action should be performed on the basis of the recommended
default setting of the sub-parameter.
//
Denotes a comment, and should not be included in the command.
2.4.2 Command Structure
Each AT command has the "AT" or “at” prefix string (except the commands A/ and +++).
Each AT command has the suffix <CR> (except the commands A/ and +++).
Example:
AT+CSQ<CR>
An AT command line may contain one or more commands. Delimiters are used to separate the
commands from each other. The delimiter is either a semicolon ";" or none, meaning space (basic
commands).
Example:
ATS0=1V1Q0E0<CR>
AT+IFC=0,0;+ICF=3,4;+CNMI=2,1,0,0,0<CR>
2.4.3 Results Code Structure
By default, the Modem responds with verbose response codes. The results code prefix is <CR><LF>. The
results code suffix is <CR><LF>.
