Sony 6220512 Technical Manual

GT47/GT48

Technical Description

The information contained in this document is the proprietary information of

Sony Ericsson Mobile Communications International. The contents are confidential and any disclosure to persons other than the officers, employees, agents or subcontractors of the owner or licensee of this document, without the prior written consent of

Sony Ericsson Mobile Communications International, is strictly prohibited. Further, no portion of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, without the prior written consent of Sony Ericsson Mobile Communications International, the copyright holder.

First edition (June 2003)

Sony Ericsson Mobile Communications International publishes this manual without making any warranty as to the content contained herein. Further Sony Ericsson Mobile Communications International reserves the right to make modifications, additions and deletions to this manual due to typographical errors, inaccurate information, or improvements to programs and/or equipment at any time and without notice. Such changes will, nevertheless be incorporated into new editions of this manual.

Publication number: LZT 123 7607 R1B

Printed in UK

Contents

1. Introduction ..............................................................................................................		4
1.1	Description ...........................................................................................	4
1.2	Highlights ...........................................................................................	4
1.3	Main Features and Services...............................................................................	5
1.4	Service and Support .........................................................................................	9
1.5	Precautions ...........................................................................................	9

2.	Mechanical Description..........................................................................................		10
	2.1	Overview .........................................................................................	10
	2.2	Physical Dimensions......................................................................................	11
3.	Electrical Description .............................................................................................		12
	3.1	Power Supply and Extended I/O Connector ...................................................	12
	3.2	RS232 Serial and Extended I/O Interface .......................................................	16
	3.3	Audio Connector .........................................................................................	22
	3.4	Antenna Connector........................................................................................	24
	3.5	SIM Card Reader .........................................................................................	25
	3.6	Real Time Clock .........................................................................................	25
	3.7	Software Updates .........................................................................................	26
4.	Embedded Applications .........................................................................................		27
	4.1	Features .........................................................................................	27
	4.2	Implementation .........................................................................................	27
5.	TCP/IP Stack...........................................................................................................		29
	5.1	Implementation .........................................................................................	29
6.	Operation.................................................................................................................		30
	6.1	Switching the GT47 On ................................................................................	30
	6.2	Switching the GT47 Off................................................................................	30
	6.3	Operating States/LED....................................................................................	30
	6.4	Power Save .........................................................................................	31
	6.5	Controller Mode .........................................................................................	31
7.	Technical Data ........................................................................................................		32
8.	AT Command Summary.........................................................................................		36
9.	Abbreviations and Definitions...............................................................................		42

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1. INTRODUCTION

1. Introduction

1.1 Description

The GT47/GT48 is an intelligent GSM/GPRS control terminal that encapsulates everything you need for wireless M2M capability in one compact unit. In conjunction with Sony Ericsson’s M2mpower package the GT47/48 can host and control your wireless application, minimising the need for extra components. Alternatively, it can be used as a powerful standalone GPRS modem with its intrinsic TCP/IP stack.

The GT47/48 is a self contained terminal with its own SIM card reader and standard connector interface, minimising the need for further hardware development.Its wide and useful range of IOs can be reconfigured to add functions and features that make your M2M solution both innovative and cost effective.

The GT47/GT48 can be used to provide a communications link for a variety of wireless applications including fleet and asset management, vending, security and alarm monitoring, e-maintenance and other telemetry applications. The ease of application development and hosting on the GT47/48 means M2M solutions in area of personal leisure (e.g.boats and caravans) and around the home can be addressed.

With dual band 900/1800 MHz (GT47) and 850/1900 MHz (GT48) versions available, your applications can be used all over the world.

The control terminal comes with a library of sample script applications to give developers a head start where needed.

The GT47/GT48 incorporates Sony Ericsson's GR47/GR48 GSM/GPRS engine.

Note! When the GT47 is referred to in the text the description covers the GT48 as well; unless specifically mentioned.

All functions described inside this Technical Description are only possible when the SIM-Card is inserted.

1.2 Highlights

•Intelligent, versatile GSM/GPRS control terminal

•Dual band, EGSM 900/1800MHz

•Customised applications can be embedded and run independently

•Self contained terminal with standard connectors

•2 x RS232 interfaces with a useful range of configurable IOs

•TCP/IP stack

•Data: GPRS, HSCSD, CSD, SMS

•Voice: full rate, enhanced full rate, half rate

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1.INTRODUCTION

•SMS: mobile-originated, mobile-terminated, cell broadcast

•Fax: Group 3, Classes 1 & 2

•15 way high density connector

•5V - 32V d.c. input

•4-wire audio connection

•Antenna connection (FME male)

•R&TTE type approved (GT47)

1.3Main Features and Services

The GT47 performs a set of telecom services (TS) according to GSM standard phase 2+, ETSI and ITU-T. The services and functions of the GT47 are implemented by issuing customised applications embedded on the device, or by AT commands issued internally, or over the RS232 serial interface.

1.3.1 Types of Mobile Station

The GT47 is a dual band control terminal with the GSM radio characteristics shown in the table below.

GT47	E-GSM900	GSM1800

Frequency Range (MHz)	TX: 880-915	TX: 1710-1785
	RX: 925-960	RX: 1805-1880

Channel spacing	200kHz	200kHz

Number of channels	174 carriers *8 time slots	374 carriers *8 time slots
	E-GSM: channels 0 to 124	DCS: channels 512 to 885
	channels 975 to 1023

Modulation	GMSK	GMSK

TX phase accuracy	< 5º RMS phase error (burst)	< 5º RMS phase error (burst)

Duplex spacing	45MHz	95MHz

Receiver sensitivity at	< –102dBm	< –102dBm
antenna connector

Transmitter output power at	Class 4	Class 1
antenna connector	2W (33dBm)	1W (30dBm)

Automatic hand-over between EGSM 900 and GSM1800

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1. INTRODUCTION

GT48	GSM850	GSM1900

Frequency Range (MHz)	TX: 824-849	TX: 1850-1910
	RX: 869-894	RX: 1930-1990

Channel spacing	200kHz	200kHz

Number of channels	124 carriers *8 time slots	299 carriers *8 time slots
	GSM: channels 128 to 251	PCS: channels 512 to 810

Modulation	GMSK	GMSK

TX Phase Accuracy	< 5º RMS phase error (burst)	< 5º RMS phase error (burst)

Duplex spacing	45MHz	80MHz

Receiver sensitivity at	< –102dBm	< –102dBm
antenna connector

Transmitter output power	Class 4	Class 1
at antenna connector	2W (33dBm)	1W (30dBm)

Automatic hand-over between GSM850 and GSM1900

1.3.2 Short Message Service

The GT47 supports the following SMS services:

•Sending; MO (mobile-originated) with both PDU (protocol data unit) and text mode supported.

•Receiving; MT (mobile-terminated) with both PDU and text mode supported.

•CBM (cell broadcast message); a service in which a message is sent to all subscribers located in one or more specific cells in the GSM network (for example, traffic reports). This feature is network dependent.

•SMS STATUS REPORT according to GSM 03.40.

•SMS COMMAND according to GSM 03.40.

The maximum length of an SMS message is 160 characters when using 7- bit encoding. For 8-bit data, the maximum length is 140 characters. The GT47 supports up to 6 concatenated messages to extend this function.

1.3.3 Voice Services

The GT47 offers the capability of mobile originated and mobile terminated voice calls, as well as supporting emergency calls. Multi-party, call waiting and call divert features are available. Some of these features are network-operator specific.

For the inter-connection of audio, the GT47 offers a balanced 4-wire analogue interface.

DTMF (Dual Tone Multi Frequency) is supported.

The GT48 also supports the Adaptive Multi Rate (AMR) type of vocoder.

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1. INTRODUCTION

1.3.4 Data Services

The GT47 supports the following data protocols:

•*356 *HQHUDO 3DFNHW 5DGLR 6HUYLFH

GT47 is a Class B terminals, which provide simultaneous activation and attachment of GPRS and GSM services. GT47 is a GPRS class 8 (4+1) enabled devices, which are capable of transmitting in one timeslot per frame (up link), and receiving at a maximum of four timeslots per frame (down link).

•&6' &LUFXLW 6ZLWFKHG 'DWD

GT47 is a capable of establishing a CSD communication at 9.6kbps.

•+6&6' +LJK 6SHHG &LUFXLW 6ZLWFKHG 'DWD

GT47 supports HSCSD class 2 (2+1) communication, with one timeslot per frame capacity in the up link and two timeslots per frame capacity in the down link.

1.3.5 Fax Services

The GT47 allows fax transmissions to be sent and received by commercial fax software installed on the application computer. Group 3 fax Classes 1 and 2 are supported.

1.3.6Supplementary Services

•Call forwarding

•Call hold, waiting and multiparty

•Calling/called number identification

•Advice of charge

•USSD

•Alternate line service

•Customer service profile

•Preferred networks

•Operator selection

•Network registration

•Call barring

•Call transfer

1.3.7Serial Communication

The GT47 enables an end-to-end communication path to be established between the telemetry/telematics application, either hosted internal or connected externally, and a remote terminal or host, via the GSM network.

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1. INTRODUCTION

Once a path has been set up, voice or data communication can take place. An RS232 9-signal serial interface is available via the GT47’s 15-way high density data connector.

This primary serial interface can be used to:

1.Control the GT47 via an external PC or micro-controller using AT commands;

2.Send and receive data.

The GT47 supports the full set of AT commands according to GSM 07.05 and GSM 07.07. It also supports an extended set of Ericsson proprietary AT commands to add extra functionality.

AT commands are used to operate the GT47 with a broad range of functions including:

•configuring general parameters of the GT47

•setting up and controlling communications to and from the GSM network

•obtaining GSM network status information

Additionally the GT47 provides a second RS232 serial interface, operating as a 4-signal and GND interface, with hardware flow control (Rx, Tx, CTS and RTS). This 4-signal serial interface is controllable via embedded applications and may be used to control external accessories e.g. a GPS receiver.

For more detail on the AT commands supported by the GT47 see “AT

Command Summary”, page 36.

1.3.8 Extended I/O Interface

The control terminal contains several general purpose, configurable, input and output signals. Signals may be reconfigured by AT command or by intrinsic function when using embedded applications.

•1 analogue input

•3 digital inputs

•5 digital outputs

•+ 4.8V DC output

In addition, 6 of the control signals on the primary RS232 interface can be reconfigured for use as digital inputs or outputs if required.

The drivers controlling certain outputs have been designed to carry higher currents than normal logic IOs. They can be used to activate or power external devices, for example a switch or a relay.

A+4.8V output is available, if required, to power external devices.

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1. INTRODUCTION

1.3.9 Interfacing with the GT47

The GT47 uses the following industry standard connectors;

•15 pin high density socket (RS232 serial port and extended I/O interface)

•RJ12 (plug-in power supply and extended I/O connector)

•RJ9 (handset audio connector)

•Integral SIM card reader

•FME male (antenna connector)

1.4Service and Support

To contact customer support please use the details below:

Customer Support

Sony Ericsson Mobile Communications

Maplewood Building

Chineham Business Park

Basingstoke

RG24 8YB

E-mail: modules.support@sonyericsson.com or

modules.info@sonyericsson.com

Information about Sony Ericsson and its products is available on the following web site:

http://www.SonyEricsson.com/M2M

1.5 Precautions

The GT47 as a standalone item is designed for indoor use only. To use outdoors it must be integrated into a weatherproof enclosure. Do not exceed the environmental and electrical limits as specified in “Technical

Data”, page 32.

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2.MECHANICAL DESCRIPTION

2.Mechanical Description

2.1 Overview

The pictures below show the mechanical design of the module along with the positions of the different connectors and mounting holes. The module case is made of durable PC/ABS plastic.

LED

Antenna
connector	Access to
	Access to
	SIM card
	RS232 serial and
	extended I/O connector

Figure 2.1 Module viewed from the left side

Mounting hole (x2)

Power supply and

extended I/O connector

Audio connector

Figure 2.2 Module viewed from the right side

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2. MECHANICAL DESCRIPTION

2.2 Physical Dimensions

3. 5

(x2)

51.0

11.0

55.3

26.2

9.0

11.0

77.4

71. 5

45.3

66.4

10.6

Measurements are given in millimetres. See also “Technical Data”, page 32.

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3.ELECTRICAL DESCRIPTION

3.Electrical Description

All electrical connections to the module are protected in compliance with the standard air (8kV) and contact (4kV) Electrostatic Discharge (ESD) tests, of EN 61000-4-2.

The module uses the following industry standard connectors:

•High density 15 pin (RS232 serial and extended I/O interface)

•RJ12 6-way (power supply and extended I/O connector)

•RJ9 4-way (handset connector)

•SIM card reader

•FME male coaxial jack (antenna connector)

3.1Power Supply and Extended I/O Connector

An RJ12 6-way connector, as shown and described below, serves as a means of supplying and controlling d.c. power to the modem. Additionally there are several extended input/output signals available that can be used to control or interface external systems and devices.

General signal description:

1VIN

2OUT-2

3IN-1

4TO_IN

5OUT-1

6GND

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3. ELECTRICAL DESCRIPTION

The power connector electrical characteristics are listed below:

Pin	Signal	Dir	Limits	Description

1	VIN	I	5 - 32V	Positive power input
2	OUT-2	O	32V, 0.25A	Low side switch, short circuit protected

3	IN-1	I	–0.5 - 32V	Digital Input
				VIH > 3V, VIL < 2.8V
				Internal Pull Down of 40KΩ

4	TO_IN	I	–0.5 - 32V	Active low control line used to switch
				the GT47 off/on.
				VIH > 5V, VIL < 2V
				Power off/on: t > 0.2s
				Internal Pull Up to VIN of 20KΩ
5	OUT-1	O	VIN, 0.4A	High side switch, short circuit protected
6	GND	I	-	Negative power (ground) input and
				return path for TO_IN and the extended
				inputs and outputs

Note! Signal OUT-2 on the RJ12 connector is switched in parallel to signal OUT-4 on the 15-pin high density socket. The individual output signals are generated by two different low side switches inside the module driven from a common control signal.

3.1.1 Power Supply Interface

The supply voltage VIN, required by the GT47, is in the range 5V - 32V d.c. VIN and GND are reverse polarity and over voltage protected.

The GT47 switches on automatically once the 5V-32V dc supply voltage is applied.

Note! The GT47 will not switch on if TO_IN is shorted to ground when the dc supply is applied.

Note! For more information on switching the GT47 on and off please see section “6. Operation”, page 30.

Note! Please be aware that the total current carried via either the VIN or GND pins will be the sum of the intrinsic power consumption of the GT47 and any drive current supplied via OUT-1 or OUT-2 (or other IOs). The current on either of the VIN or GND pins must not exceed 1.5A.

Caution! It is recommended that the system integrator provides appropriate fusing otherwise the GT47 may be damaged.

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