Specifications
UC864-E/G/WD/WDU AT Commands Reference Guide
80304ST10041a Rev. 7 - 2010-10-14
Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved. Page 12 of 318
3.2.1. String Type Parameters
A string, either enclosed between quotes or not, is considered to be a valid string type
parameter input. According to V25.ter space characters are ignored on the command
line and may be used freely for formatting purposes, unless they are embedded in
numeric or quoted string constants; therefore a string containing a space character has
to be enclosed between quotes to be considered a valid string type parameter (e.g. typing
AT+COPS
=1,0,”A1” is the same as typing AT+COPS=1,0,A1; typing AT+COPS=1,0,”A
BB” is different from typing AT+COPS
=1,0,A BB).
A small set of commands requires always writing the input string parameters within
quotes: this is explicitly reported in the specific descriptions.
3.2.2. Command Lines
A command line is made up of three elements: the prefix, the body and the termination
character.
The command line prefix consists of the characters “AT” or “at”, or, to repeat the
execution of the previous command line, the characters “A/” or “a/”.
The termination character may be selected by a user option (parameter S3), the default
being <CR>.
The basic structures of the command line are:
ATCMD1<CR> where AT is the command line prefix, CMD1 is the body of a basic
command (nb: the name of the command never begins with the character “+”)
and <CR> is the command line terminator character
ATCMD2=10<CR> where 10 is a subparameter
AT+CMD1;+CMD2=, ,10<CR> These are two examples of extended commands
(nb: the name of the command always begins with the character “+”
2
). They are
delimited with semicolon. In the second command the subparameter is omitted.
+CMD1?<CR> This is a Read command for checking current subparameter
values
+CMD1=?<CR> This is a test command for checking possible subparameter
values
These commands might be performed in a single command line as shown below:
2
The set of proprietary AT commands differentiates from the standard one because the name of
each of them begins with either “@”, “#”, “$” or “*”. Proprietary AT commands follow the same
syntax rules as extended commands