Specifications

Telit GE864 and GC864

Product Description

80273ST10008A Rev. 3 - 10/02/06

5 Software Features

5.1 Enhanced Easy GPRS Extension

5.1.1 Overview

The Easy GPRS feature allows the Telit GE864 / GC864 user to contact a device in internet and

establish with it a raw data flow over the 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 GE864 / GC864 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 GE864 / GC864 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. The new Enhanced version of the 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;

- A new internal firewall has been implemented in order to guarantee a certain level of security

on internet applications.

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