All this software was created from observating other programs - what they send to/from phone. There two methods to dump transmission: 1.hardware You have to connect RxD (or TxD) and GND pin from the COM port, you use with phone, to the second COM port. Then you run soft, which will show, what is received by second port (now in win32 with enabled debug it can be "gnokii --sniff port") TIP: if you want to sniff MBUS, connect RxD (everything, what goes from TxD is repeated on RxD) 2.software You run emulator of OS, where program work. Then using emulator functions see, what is send (emulator is between phone and program, isn't it ?). When you have transmission, try to find some identical sequences. If you will have them, try to find each frame format...