Using GPRS and TCP/IP stack with SEM GSM modules
LZT 123 7699 R1A 3
Contents
1
INTRODUCTION....................................................................................................................4
2 OVERVIEW OF THE GSM/GPRS SYSTEM ......................................................................... 5
2.1 GSM MODULE AND APPLICATION ........................................................................................ 5
2.2 GSM/GPRS NETWORK ..................................................................................................... 5
2.3 APN................................................................................................................................. 5
2.4 DHCP SERVER ................................................................................................................. 5
2.5 INTERNET ......................................................................................................................... 5
2.6 WEB SERVER .................................................................................................................... 5
3 MODES OF OPERATION...................................................................................................... 7
3.1 GSM MODULES WITHOUT TCP/IP STACKS.......................................................................... 7
3.1.1 Running GPRS through Windows ........................................................................... 7
3.2 GSM UNITS WITH TCP/UDP/IP STACKS............................................................................. 8
4 PRACTICALITIES OF USING GPRS.................................................................................... 9
4.1 CONNECTION TIMING ......................................................................................................... 9
4.2 DYNAMIC IP ADDRESSES ................................................................................................... 9
4.3 STATIC IP ADDRESSING ..................................................................................................... 9
4.4 TCP AND UDP PROTOCOLS............................................................................................. 10
5 REFERENCES..................................................................................................................... 11
(105 paginas)
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