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Old November 15th 15, 01:07 PM posted to alt.cellular.gsm
gm
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Posts: 12
Default GSM localization - triangulation

Hi !

Am making one project with my sim900 module and AT command set.
The goal is to get , as much as possible, correct location of my gsm
modem. This is what i tried so far:

AT+COPS?
-----------
+COPS: 0,0,"Tele2"
OK


AT+CREG?
-----------
+CREG: 0,1
OK

Parameters:
mode 0 - automatic choice (the parameter oper will be ignored)
format 1 - alphanumeric short form

AT+CGREG?
----------
+CGREG: 2,1,"006F","263F"

Am getting good location but just one line and one tower...

AT+CGREG=?
---------
+CGREG: (0,1,2)
OK

What does this 3 parameters do ? Should there not be just two ?
How can i call AT+CGREG[=[n]] with this "n" number.

Anyway, help needed on setting basic triangulation.

Thank you in advance !
GM