I finally managed to place a call. After trying to use the test base and compile, it gave error for some function which was expecting a parameter. I found that I had to put NULL as parameter and after this it compiled with no errors. I also reported this on irc and someone has fixed this - the repository now has this parameter.

I have just tried this testing branch too. I had version without fix, following change is needed:

in osmocom-bb/src/target/firmware/apps/simtest/main.c add NULL as parameter to calypso_sim_init()

    /* Initialize Sim-Controller driver */
    puts("Initializing driver:\n");
    calypso_sim_init(NULL);

I try to help with putting information on wiki.

- Tomas