Rainbow Electronics GM862-QUAD-PY - Manual (Page 42)

Easy GPRS User Guide
80000ST10028 Rev. 4 - 16/07/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 42 of 63
2.4.3 Easy GPRS -EMAIL receiving application
Let's suppose we want to receive with our embedded device an EMAIL by using a POP3 server.
Initial data:
Server to be contacted POP.mail.server
POP service port #110
Application Layer Protocol POP3 (RFC1785)
Receiver
"module"<[email protected]>
Email account username [email protected]
Email account password telit
GPRS settings
APN
internet.gprs
IP of GPRS device dynamically assigned by the
network
DNS assigned by the network
USERID EASY GPRS
PASSWORD EASY GPRS
Socket parameters
Connection Identifier
1
Packet size (used by
TCP/UDP/IP stack for data
sending)
300
Socket inactivity timeout 90
Connection timeout 600
Data sending time out 50
Checking on the RFC1785, we can found that the port 110 is dedicated for POP3 service, therefore
our POP server will be waiting for incoming connections on that port and we will fix the EASY GPRS
port to be contacted on the remote server exactly to 110.
Second thing we have to discover is whether the transport protocol has to be TCP or UDP; on the
RFC1785 we can read that the POP3 Application layer protocol is meant to be on top of TCP/IP
protocol, therefore the transport protocol choice will fall on TCP.
Now we have all the information needed to configure our system.
With our microcontroller we can now issue to the Telit module the following AT commands:
AT+CGDCONT = 1,"IP","internet.gprs","0.0.0.0",0,0<cr>
(1-GPRS context setting)
For all the socket settings the following AT command will be used:
AT#SCFG=1,1,300,90,600,50
OK