reading bts parameters

hello, I am not quite sure if this is the right place to ask, so sorry in advance for spamming ir i'm in the wrong place. I have build and run osmocom on my C123. I am using it for a university project and we try to read parameters from surrounding BTS. The final goal will be to separate real bts from imsi catchers. So my question is, can I use the osmocom library to gather some data from surrounding BTS? Are there some example programs? Would anyone know a good way to read the SIM data from the connected C123? Thanks in advance! Cheers Tom ---------------------------------------------------------------------------- Short example scenario: A very obvious catcher fault would be not having set the regional code or having set a wrong regional code. So it would theoretically be possible to read the regional code from the own SIM card and the regional code of the transmitting BTS and compare those.