WMO2 G900 / G1800 / G1900
WCOM/GSM/WMO2/WMO2ATDOC
Friday 21 May 1999
WAVECOM confidential ©
18
3.1.1
Request syntax
3.1.1.1
3.1.1.1
Basic syntax
Basic syntax
At fixed baud rate uppercase or lowercase letters can be used to
type in the AT-Commands. But the use of both upper and lower-
case characters in the same command is not permitted.
The end character, except in some cases for which it is indicated, is
always the <CR> (Carriage Return) character.
The syntax is based on the nominal Hayes standard:
•
Each command begins with a 2 letters prefix "AT" (ATtention)
except the "+++" and the "A/" commands;
•
The command's body is a single character or an
& (ampersand) character immediately followed by a single
character;
•
A + (plus) character may immediately follow the AT prefix to
indicate it is an extended command format in that case, a
letter (chosen among the following one: A, C, D, E, F, G, I, M,
S, T, V or W) immediately follows the + character, then comes
the command itself (the body);
•
The parameters (if any) of the command
are placed
at the end.
Examples:
ATA
' to answer a call.
AT&W
' to store the profile in memory.
ATQ1
' to suppress the extended syntax result codes.
ATS0=2
' to automatically answer a call after 2 rings.
It is possible to concatenate several commands on the same
command line, example: ATQ1S0=2;&W
You must insert a ; (semicolon) straight after each command that
use a = (equal) or ? (question mark) character and after each
extended format command.
There is no need of any special character for all other commands
(i.e. there are no ; (semicolon) between the Q1 and S0=2
commands above, but there is one straight after the S0=2
command before the &W command.
3.1.1.2
3.1.1.2
Special cases
Special cases
If the serial link exchange baud rate is not fixed, case of the modem
working in autobauding mode, it is not possible to type in the
commands using lowercase characters.
When sending SMS messages, the end character is no longer the
<CR> (carriage return), it is the <CTRL>Z character (Escape
character).
