Siemens M1 - Manual (Page 19)

18
gsm-m1-e.fm GSM M1 Module, English: A24859-N4000-A100-1-7677
Technical reference section
26.2.96
Please note:
In both cases, result codes are made up of ASCII characters. Long result codes must
begin and end with and characters. Short result codes only end with a
character.
The A/ command allows you to reissue the previous command line in its entirety. This
is the only command that is not preceded by AT and that does not have to end with
(Enter). A/ is mainly used when the line was busy or the call was not answered.
In this case, the GSM module repeats the dial command.
Example:
Enter: AT D 01999341
GSM module: BUSY
Enter: A/
GSM module: Reissues the command (= D 01999341).
Overview of the short and long result code formats
Short
code
Long code Meaning
0 OK Command executed, no error
1 CONNECT Connection set up
2 RING Ringing signal detected
3 NO CARRIER Connection not set up or disconnected
4 ERROR Incorrect command or command too long.
The AT+CMEE= 2 command allows you to display
extended error messages to GSM 07.07.
6 NO DIALTONE Connection cannot be set up.
7 BUSY Distant station busy
10 CONNECT 2400 Connection at 2400 bit/s
30 CONNECT 4800 Connection at 4800 bit/s
32 CONNECT 9600 Connection at 9600 bit/s
A/ - Repeat previous command line