Sony Ericsson GPRS and TCP-IP with the SEM GSM modules, Application Note

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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 I
NTERNET
......................................................................................................................... 5
2.6 W
EB 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 C
ONNECTION TIMING
......................................................................................................... 9
4.2 D
YNAMIC
IP
ADDRESSES
................................................................................................... 9
4.3 S
TATIC
IP
ADDRESSING
..................................................................................................... 9
4.4 TCP
AND
UDP
PROTOCOLS
............................................................................................. 10
5 REFERENCES..................................................................................................................... 11