Contents
Hardware Data Flow Control (RTS/CTS)................................................. 42
Software Data Flow Control (XON/XOFF) .............................................. 42
Establishing or Accepting a CSD Data Connection..............................................44
Automatic execution of AT commands................................................................48
Automated PIN entry and login after restart .......................................... 49
Alarm via DTR Control Line .................................................................... 51
Configuration of Energy Conservation Modes and Real-Time Clock....................54
Change Between the Energy Conservation Modes ............................... 56
Power-Down Mode ................................................................................ 59
AT Command Reference ........................................................................63
General Information to the Command Sets .........................................................63
AT Commands According to V.250 ....................................................... 65
AT Commands for GSM Connections .................................................... 69
AT Commands for SMS ......................................................................... 71
AT Commands for GPRS Connections................................................... 72
AT Commands for Energy Conservation Functions ............................... 78
AT Commands for Time Functions ........................................................ 79
AT Commands for Automatic Functions................................................ 79
GSM Service Center Numbers ...............................................................80
Network Provider Codes ........................................................................82
Feb-12
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