CONTACLIP GSM-PRO2-GPS Instruction Manual page 5

14.2 No connection to GSM network ............................................................................................................ 35
14.3 The module doesn't send any messages ................................................................................................ 35
14.4 The module doesn't start ...................................................................................................................... 35
14.5 Diagnosis .............................................................................................................................................. 35
15 APPENDIX: SMS COMMANDS...................................................................................................36
16 APPENDIX: DIAGNOSTIC COMMANDS ......................................................................................38
17 APPENDIX: SIGNAL STRENGTHS ...............................................................................................39
18 APPENDIX: MODBUS REGISTERS ..............................................................................................40
GSM-PRO2