Usage: python gsmselftest.py [option] Options and arguments (and corresponding environment variables): --all : To execute all test case --sip : To execute ALL test case --gsmrz : To check whether GSM RZ network having problem or not --gsmext : To check whether GSM BOX modem having problem or not --landline : To check incoming call from Landline --smart : To test only important point in the network and identify which part having problem. --devconf : To configuration USB device example : gsmselftest.py --devconf