Easy GPRS User Guide
80000ST10028 Rev. 0 - 02/01/07
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved
page 31 of 35
Email account username
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
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)
AT#USERID = "EASY GPRS"<cr>
(2-Authentication setting)
AT#PASSWD = "EASY GPRS"<cr>
(2-Authentication
setting)
AT#PKTSZ=300
(3-Socket setting)
AT#DSTO=50
(3-Socket setting)
AT#SKTTO=90
(3-Socket setting)
AT#SKTCT=600
(3-Socket setting)
For our convenience we store all these parameters with the command:
AT#SKTSAV<cr>
Now we can activate the GPRS context:
AT#GPRS=1<cr>
+IP: 193.199.234.255
OK
The commands gives as response the IP address assigned to the module by the network.
AT#SKTD=0,110,"POP.mail.server",0,0<cr>
When we receive the CONNECT indication, then we are exchanging data with the POP3 server
program on the remote host machine.
Following the POP3 protocol we can proceed with the authentication directly over the serial line (in
blue you can find the data sent by us, in violet the one received from host):
+OK POP3 PROXY server ready (7.0.027) <[email protected]>
USER [email protected]
<cr><lf>
Summary of Contents for GE864-PY
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