9. Using Loggernet for GPRS communications
......... 24
9.1 Setting up to call a logger with a fixed IP address .................................. 24
9.2 Setting up call-back in Loggernet ........................................................... 25
9.2.1 Setting up call-back in Loggernet Version 3 ................................. 25
9.2.2 Setting up call-back in Loggernet Version 4 ................................. 26
9.2.3 Keeping the connection open when calling-back .......................... 28
9.2.4 Firewall issues ............................................................................... 28
10. Preventing COM110 modem Connection
Problems
............................................................ 29
11. Fault Finding
........................................................... 30
11.1 General.................................................................................................. 30
11.2 A GSM Base Station Fails to Get a Response from the logger ............. 31
11.3 GPRS Fault finding – when using the logger TCP/IP stack .................. 31
11.3.1 First stage fault finding ............................................................. 31
11.4 GPRS Advanced fault finding ............................................................... 34
11.5 GPRS Fault finding – when using the modem TCP/IP stack ................ 35
Appendices
A. Using the COM110 with the PIN Security
Feature Enabled
................................................ A-1
A.1 Introduction .......................................................................................... A-1
A.2 CRBasic Program Example .................................................................. A-1
A.3 CR10X Program Example.................................................................... A-3
B. Controlling the Power Supply to the COM110
Modem
............................................................... B-1
B.1 Controlling the Power Consumption of the COM110 modem .............. B-1
B1.1 CRBasic Program Example of Power Control ............................. B-2
B1.2 CR10X Program Example ............................................................ B-4
C. Useful Configuration Commands for the
COM110
............................................................. C-1
C.1 Signal Quality Checks .......................................................................... C-1
C.2 Network Registration Checks ............................................................... C-2
C.3 PIN Configuration ................................................................................ C-4
C.4 Changing the operating frequency between EU/Rest of world and
US wavebands.................................................................................. C-4
D. Using the COM110 in Transparent Mode for
GSM Dial-up use
.............................................. D-1
D.1 Introduction .......................................................................................... D-1
D.2 Disabling the RLP Protocol ................................................................. D-1
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