Specifications

UC864-E/G/WD/WDU Product Description

80281ST10034a Rev. 4 – 2009-06-24

Easy GPRS overcomes some of the known limitations of the previous implementation

and implements some new features such as:

• Keep the WCDMA/EDGE/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.

5.1.2 Easy GPRS definition

The Easy GPRS feature provides a way to replace the need of an Internet TCP/IP stack

at the terminal equipment side. The steps that will be required to obtain a virtual serial

connection (that is actually a socket) to the Internet peer are:

• configuring the WCDMA/EDGE/GPRS Access

• configuring the embedded TCP/IP stack behavior

• defining the Internet Peer to be contacted

• request the WCDMA/EDGE/GPRS and socket connections to be opened (host is

connected)

• exchange raw data

• close the socket and WCDMA/EDGE/GPRS context

All these steps are achieved through AT commands.

As for common modem interface, two logical statuses are involved: command mode

and data traffic mode.

• In Command Mode

(CM), some AT commands are provided to configure the Data

Module Internet stack and to start up the data traffic.

• In data traffic mode

(Socket Mode, SKTM), the client can send/receive a raw data

stream which will be encapsulated in the previously configured TCP / IP packets

which will be sent to the other side of the network and vice versa. Control plane of

ongoing socket connection is deployed internally to the module.

For more detailed information regarding WCDMA/EDGE/GPRS please consult Easy

GPRS User Guide and AT Commands Reference Guide.