Rainbow Electronics UC864 - Manual (Page 27)

UC864-E/G Product Description
80281ST10034a Rev. 1 - 08/08/2008
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 27 of 36
4 Software Features
4.1 Enhanced Easy GPRS Extension
4.1.1 Overview
The Easy
WCDMA/ GPRS feature allows the Telit UC864-E/G user to contact a device in internet and
establish with it a raw data flow over the WCDMA/ GPRS and Internet networks.
This feature can be seen as a way to obtain a "virtual" serial connection between the Application
Software on the Internet machine involved and the controller of the
Telit UC864-E/G module,
regardless of all the software stacks underlying.
An example of the protocol stack involved in the devices is reported:
This particular implementation allows to the devices interfacing to the Telit UC864-E/G module the
use of the GPRS and Internet packet service without the need to have an internal TCP/IP stack since
this function is embedded inside the module.
Easy GPRS overcomes some of the known limitations of the previous implementation and implements
some new features such as:
•
Keep the GPRS context active even after the closing of a socket, allowing the application to keep
the same IP address;
•
Also Mobile terminated (incoming) connections can be made, now it is possible to receive
incoming TCP connection requests;
Remote
Controller Device
Device (Internet)
Local Remote
Application Application
TCP/UDP
EASY EASY TCP/UDP
GPRS GPRS
IP IP IP IP
Serial Data
Line on
Driver Board
L2 L2
V.24 V.24
L1 L1
Telit
GE864 / GC864 networks
Firewall
<<<---------------------------------- Virtual Serial link ---------------------------------->>>
network interworking