Good day. Thank you for your question.
Please refer here for the Parameter List - https://wiki.teltonika-gps.com/view/FMB920_Parameter_list
Also, for the SMS command to identify the current parameter settings, it will be getparam, so if you would like to check on the current settings for the Ignition source, it will be as follows:
With login and password : <login><space><password><space>getparam 101
Without login and password : <space><space>getparam 101
If you are sending via GPRS then you may skip the login, password, and <space>.
For more information on the SMS/GPRS command lists, please refer here - https://wiki.teltonika-gps.com/view/FMB920_SMS/GPRS_Commands