Owner's manual

UC864-E/G Product Description

80281ST10034a Rev. 1 - 08/08/2008

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

(Internet)

Local Remote

Application Application

TCP/UDP

EASY EASY TCP/UDP

GPRS

Serial

Data

Line

Driver Board

V.24

L1 L1

Telit

GE864 / GC864 networks

Firewall

<<<---------------------------------- Virtual Serial link ---------------------------------->>>

network interworking