Telit Wireless Solutions Easy GPRS - Manual (Page 3)

Easy GPRS User Guide
80000ST10028 Rev. 1 - 14/03/07
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 3 of 37
Contents
1 GPRS Operations ............................................................................................................................ 5
1.1 Introduction ............................................................................................................................................5
1.1.1 CSD application example ....................................................................................................................................7
1.1.2 GPRS application example ..................................................................................................................................8
1.2 Preliminary GPRS context parameters setting....................................................................................9
1.2.1 Context parameter setting ....................................................................................................................................9
1.2.2 Minimum Quality of the Service Requested......................................................................................................10
1.2.3 Requested Quality of the Service.......................................................................................................................12
1.3 GPRS context activation and data state entering ..............................................................................14
1.4 GPRS data state exit.............................................................................................................................16
2 Enhanced Easy GPRS Extension ................................................................................................. 17
2.1 Overview................................................................................................................................................17
2.1.1 Easy GPRS Outgoing connection ......................................................................................................................18
2.1.1.1 Configuring the GPRS access ...................................................................................................................18
2.1.1.2 Configuring the embedded TCP/IP stack ..................................................................................................18
2.1.1.3 Saving settings for the Internet peer to be contacted.................................................................................18
2.1.1.4 Request the GPRS context to be activated ................................................................................................19
2.1.1.5 Open the connection with the internet host ...............................................................................................19
2.1.1.6 Close the Socket without deactivating the context....................................................................................19
2.1.2 Easy GPRS Incoming Connection .....................................................................................................................20
2.1.2.1 Defining the Internet Peer that can contact this device (firewall settings) ................................................20
2.1.2.2 Request the socket connection to be opened in listen ...............................................................................21
2.1.2.3 Receiving connection requests ..................................................................................................................21
2.1.3 FTP Client..........................................................................................................................................................22
2.1.4 Email Client .......................................................................................................................................................22
2.1.5 Known limitations..............................................................................................................................................22
2.2 FTP OPERATIONS .............................................................................................................................23
2.2.1 Opening and Closing an FTP Connection..........................................................................................................23
2.2.2 Setting the FTP Transfer Type...........................................................................................................................24
2.2.3 FTP File transfer to the server ...........................................................................................................................24
2.2.4 FTP File download from the server ...................................................................................................................25
2.3 Examples ...............................................................................................................................................27
2.3.1 Easy GPRS - HTTP client application ...............................................................................................................27
2.3.2 Easy GPRS - EMAIL sending application.........................................................................................................29
2.3.3 Easy GPRS -EMAIL receiving application .......................................................................................................33
2.3.4 Remote connection between two modules.........................................................................................................35
3 List of acronyms............................................................................................................................. 36
4 Document Change Log .................................................................................................................. 37