GSM Modem Mapping in linux

Question

My task is to find out which GSM modem is connected to which serial port and write a programm in python which does the following work.

Now since multiple sim cards can be connected to a given modem, my task is to find details of the sim cards which in each modems.

I use minicom to pass AT commands to the modem.

hlovdal hlovdal · Accepted Answer · 2013-05-22T21:50:23

To identify what kind of modem that is connected on a serial port, you can use AT commands

ATI         Request Identification Information
AT+GMI      Request Manufacturer Identification
AT+GMM      Request Model Identification
AT+GMR      Request Revision Identification
AT+GOI      Request Global Object Identification
AT+GSN      Request Product Serial Number Identification
AT+CGMI     Request Manufacturer Identification
AT+CGMM     Request Model Identification
AT+CGMR     Request Revision Identification
AT+CGSN     Request Product Serial Number Identification
AT+CIMI     Request international mobile subscriber identity

With regards to determining which of dualsim, there is no standardised way of doing this.

If you are really adventurous and not afraid of entering into the unintuitive and nothing-is-easily-understandable-documented land of SIM (using AT+CSIM/AT+CRSM), you could possibly find some useful information in some EF (but I mention this option more or less just for completeness...).

GSM Modem Mapping in linux

1 Answers