Sony Ericsson GM47 User manual

Product Photo/Illustration
GM47/GM48

The product described in thismanual conforms to the TTE directive 91/263/EEC and
EMC directive 89/336/EEC. The product fulfils the requirements according to
ETS 300 342-1.
SAR statement: This product is intended to be used with the antenna or other
radiating element at least 20cm away from any part of the human body.
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 (April 2002)
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 beincorporated into new editions
of this manual.
All rights reserved.
©Sony Ericsson Mobile Communications International, 2002
Publication number: LZT 123 7263 R1A
Printed in UK
Trademarks
AIX is a trademark owned by International Business Machines Corporation.

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Contents
Part 1: Overview................................................................................................. 11
1. Introduction............................................................................................................13
1.1 Target Users ......................................................................................... 13
1.2 Prerequisites ......................................................................................... 13
1.3 Manual Structure ......................................................................................... 13
2. GM47/GM48 Modules...........................................................................................15
2.1 About the GM47/GM48 Family .................................................................. 15
2.2 GM47 in a Communication System............................................................. 15
2.3 Features ......................................................................................... 17
2.3.1 Types of Mobile Station ..................................................................17
2.3.2 Short Message Service....................................................................18
2.3.3 Voice Calls......................................................................................18
2.3.4 Data.................................................................................................18
2.3.5 SIM Card.........................................................................................19
2.3.6 Average Power Consumption .........................................................19
2.3.7 Other Features................................................................................19
2.4 Service and Support ..................................................................................... 19
2.4.1 Web Pages.......................................................................................19
2.4.2 Integrator’s Manual........................................................................19
2.4.3 Developer’s Kit...............................................................................20
2.5 Precautions ......................................................................................... 20
3. Abbreviations .........................................................................................................21
Part 2: Developer’s Kit....................................................................................... 23
1. Introduction............................................................................................................25
1.1 Overview ......................................................................................... 25
1.2 Contents of the Kit ....................................................................................... 25
1.3 General Functioning of the Kit .................................................................... 26
2. Using the Developer’s Kit......................................................................................29
2.1 Start up Check List....................................................................................... 30
2.2 Developer’s Board Overlay.......................................................................... 31
2.3 Jumpers, Switches and Connectors.............................................................. 32
2.4 System Connector Pin Assignments ............................................................ 36
Part 3: Integrating the Module............................................................................ 37
1. Mechanical Description.........................................................................................39
1.1 Interface Description.................................................................................... 39
1.2 Physical Dimensions.................................................................................... 40

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2. System Connector Interface ..................................................................................41
2.1 Overview .......................................................................................... 41
2.2 General Electrical and Logical Characteristics ............................................ 44
2.2.1 General Protection Requirements...................................................44
2.3 Grounds .......................................................................................... 45
2.3.1 Analogue Ground - AGND..............................................................45
2.3.2 Digital Ground - DGND..................................................................45
2.4 VCC - Regulated Power Supply Input ......................................................... 45
2.5 ON/OFF and External Power Signal ............................................................ 46
2.5.1 Switching the module ON and OFF ................................................46
2.5.2 VIO - 2.75V Supply..........................................................................47
2.6 Analogue Audio .......................................................................................... 48
2.6.1 Audio To Mobile Station - ATMS ....................................................48
2.6.2 Audio From Mobile Station - AFMS ...............................................49
2.6.3 Microphone Signals.........................................................................50
2.6.4 Speaker Signals ...............................................................................51
2.7 Digital Audio .......................................................................................... 52
2.8 Serial Data Interfaces.................................................................................... 53
2.8.1 UART1 (RS232) - RD, TD, RTS, CTS, DTR, DCD and RI..............53
2.8.2 Serial Data Signals - RD, TD..........................................................54
2.8.3 Control Signals - RTS, CTS, DTR, DCD, RI...................................54
2.8.4 UART2 - TD2, RD2 .........................................................................56
2.8.5 UART3 - TD3, RD3 .........................................................................57
2.9 SIM Card Related Signals ............................................................................ 57
2.9.1 SIM Detection - SIMPRESENCE ....................................................58
2.10 Service/Programming................................................................................... 59
2.11 Buzzer .......................................................................................... 59
2.12 LED .......................................................................................... 59
2.13 General Purpose Digital I/O Ports................................................................ 60
2.14 General Purpose Analogue I/O Ports............................................................ 61
2.14.1 Digital to Analogue Converter - DAC.............................................61
2.14.2 Analogue to Digital Converters 1, 2 and 3 - ADCx ........................62
2.15 External I 2C Serial Control Bus .................................................................. 63
2.16 TX_ON - Burst Transmission....................................................................... 63
2.17 Real Time Clock .......................................................................................... 64
3. Antenna Connector ................................................................................................65
4. Hints for Integrating the Module..........................................................................67
4.1 Safety Advice and Precautions..................................................................... 67
4.1.1 General............................................................................................67
4.1.2 SIM Card.........................................................................................67
4.1.3 Antenna............................................................................................68
4.2 Installation of the Module............................................................................. 68
4.2.1 Where to Install the Module............................................................68
4.2.2 How to Install the Module...............................................................69
4.3 Antenna .......................................................................................... 70
4.3.1 General............................................................................................70

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4.3.2 Antenna Type ..................................................................................71
4.3.3 Antenna Placement .........................................................................71
4.3.4 The Antenna Cable..........................................................................71
4.3.5 Possible Communication Disturbances..........................................72
5. Technical Data........................................................................................................73
Part 4: Using AT Commands.............................................................................. 75
1. Introduction to AT Commands ............................................................................77
1.1 Overview ......................................................................................... 77
1.2 Syntax Description....................................................................................... 77
1.2.1 Conventions.....................................................................................77
1.2.2 AT Command Syntax.......................................................................78
1.2.3 AT Response Syntax........................................................................79
1.3 Error Codes ......................................................................................... 81
1.3.1 +CME ERROR (Mobile Equipment Error Code)...........................81
1.3.2 +CMS ERROR (Message Service Failure Result Code) ................82
1.4 Examples on How to Use the AT Commands ............................................ 83
2. Call Control............................................................................................................85
2.1 AT+CPIN PIN Control...................................................................... 85
2.2 ATA Answer Incoming Call..................................................... 85
2.3 ATD Dial .................................................................................. 86
2.4 ATH Hang up............................................................................ 88
2.5 ATL Monitor Speaker Loudness.............................................. 88
2.6 ATO Return to Online Data Mode............................................ 89
2.7 ATP Select Pulse Dialling........................................................ 89
2.8 ATT Select Tone Dialling........................................................ 89
2.9 ATX Call Progress Monitoring Control ................................... 90
2.10 AT+CHUP Hang up Call.................................................................... 90
2.11 AT+CMOD Call Mode ........................................................................ 91
2.12 AT+CVHU Voice Hang-Up................................................................ 92
2.13 AT+VTS DTMF and Tone Generation ........................................... 92
3. Control and Status.................................................................................................95
3.1 ATQ Result Code Suppression................................................. 95
3.2 ATS0 Automatic Answer Control.............................................. 95
3.3 ATS2 Escape Sequence Character............................................. 96
3.4 ATS3 Command Line Termination Character........................... 96
3.5 ATS4 Response Formatting Character....................................... 97
3.6 ATS5 Command Line Editing Character (BACKSPACE)........ 98
3.7 ATS6 Blind Dial Delay Control................................................. 98
3.8 ATS7 Connection Completion Timeout .................................... 99
3.9 ATS8 Comma Dial Modifier Delay Control.............................. 99
3.10 ATS10 Automatic Disconnect Delay Control............................ 100
3.11 AT*ECAM Ericsson Call Monitoring............................................... 100

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3.12 AT*EDST Ericsson Daylight Saving Time ..................................... 102
3.13 AT*EMAR Ericsson Master Reset.................................................... 103
3.14 AT*EPEE Ericsson Pin Event ......................................................... 103
3.15 AT*ESMM Ericsson Settings Minute Minder................................... 104
3.16 AT+CALA Set Alarm ....................................................................... 104
3.17 AT+CALD Alarm Delete .................................................................. 105
3.18 AT+CAPD Postpone or Dismiss an Alarm....................................... 105
3.19 AT+CCLK Set Clock and Date......................................................... 106
3.20 AT+CEER Extended Error Report ................................................... 106
3.21 AT+CFUN Set Phone Functionality ................................................. 107
3.22 AT+CIND Indicator Control............................................................ 108
3.23 AT+CLAC List all available AT Commands.................................... 109
3.24 AT+CMEE Mobile Equipment Error ................................................ 109
3.25 AT+CMER Mobile Equipment Event Reporting .............................. 110
3.26 AT+CPAS Phone Activity Status..................................................... 111
3.27 AT+CPIN PIN Control.................................................................... 113
3.28 AT+CPWD Change Password ........................................................... 115
3.29 AT+CR Service Reporting Control.............................................. 117
3.30 AT+CRC Cellular Result Code ...................................................... 117
3.31 AT+CSAS Save Settings .................................................................. 118
3.32 AT+CSQ Signal Strength............................................................... 118
3.33 AT+CTZU Automatic Time Zone Update........................................ 119
4. Audio......................................................................................................................121
4.1 AT*E2EAMS Ericsson M2M Audio Profile Modification................... 121
4.2 AT*E2APR M2M Audio Profile Manipulation ................................. 127
4.3 AT*EALR Ericsson Audio Line Request......................................... 129
4.4 AT*EAMS Ericsson Audio Mode Selection..................................... 130
4.5 AT*EARS Ericsson Audio Ring Signal........................................... 132
4.6 AT*E2PHFB Portable Handsfree Button Sense Enable....................... 133
4.7 AT*ELAM Ericsson Local Audio Mode........................................... 133
4.8 AT*EMIC Ericsson Microphone Mode........................................... 134
4.9 AT*EMIR Ericsson Music Mute Indication Request ...................... 134
4.10 AT*EPRR Ericsson Personal Ring Type Read................................ 136
4.11 AT*EPRW Ericsson Personal Ringtype Write ................................. 137
4.12 AT*ERIL Ericsson Ring Level Set................................................. 139
4.13 AT*ERIN Ericsson Ring Set ........................................................... 140
4.14 AT*ERIP Ericsson Ring Signal Playback Command..................... 141
4.15 AT*ESMA Ericsson Set Message Alert Sound ................................ 142
4.16 AT*ESOM Ericsson Settings Own Melody...................................... 142
4.17 AT*EXVC Ericsson SET External Volume Control ........................ 144
4.18 ATM Monitor Speaker Control................................................ 145
5. Data - CSD/HSCSD..............................................................................................147
5.1 AT+CBST Select Bearer Service Type............................................ 147
5.2 AT+CRLP Radio Link Protocol ....................................................... 149
6. Data - GPRS..........................................................................................................151

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6.1 AT+CGACT PDP Context Activate or Deactivate ............................. 151
6.2 AT+CGATT GPRS Attach or Detach................................................. 152
6.3 AT+CGDATA Enter Data State............................................................. 153
6.4 AT+CGDCONT Define PDP Context ...................................................... 154
6.5 AT+CGEREP GPRS Event Reporting.................................................. 156
6.6 AT+CGPADDR Show PDP Address........................................................ 157
6.7 AT+CGQMIN Quality of Service Profile (Minimum Acceptable) ....... 158
6.8 AT+CGQREQ Quality of Service Profile (Requested).......................... 160
6.9 AT+CGREG GPRS Network Registration Status............................... 163
6.10 AT+CGSMS Select Service for MO SMS Messages.......................... 164
7. Data - HSCSD.......................................................................................................165
7.1 AT+CHSC HSCSD Current Call Parameters................................... 165
7.2 AT+CHSD HSCSD Device Parameters ........................................... 166
7.3 AT+CHSN HSCSD Non Transparent Call Configuration ............... 167
7.4 AT+CHSR HSCSD Parameters Report............................................ 169
7.5 AT+CHSU HSCSD Automatic User Initiated Upgrading................ 170
8. Data - WAP...........................................................................................................171
8.1 AT*EWBA Ericsson WAP Bookmark Add...................................... 171
8.2 AT*EWBR Ericsson WAP Bookmark Read..................................... 172
8.3 AT*EWCG Ericsson WAP CSD Gateway........................................ 173
8.4 AT*EWCT Ericsson WAP Connection Timeout.............................. 174
8.5 AT*EWDT Ericsson WAP Download Timeout ............................... 174
8.6 AT*EWHP Ericsson WAP Homepage ............................................. 175
8.7 AT*EWIL Ericsson WAP Image Load ........................................... 175
8.8 AT*EWLI Ericsson WAP Login..................................................... 176
8.9 AT*EWPA Ericsson WAP Push Access Setting.............................. 177
8.10 AT*EWPB Ericsson WAP Preferred Bearer.................................... 177
8.11 AT*EWPN Ericsson WAP Profile Name......................................... 178
8.12 AT*EWPR Ericsson WAP Profile.................................................... 179
9. GPS Interoperability ...........................................................................................181
9.1 AT*EENMEA NMEA (GPS) Mode on UART2 ................................... 181
9.2 AT*E2NMPR Ericsson M2M Set NMEA (GPS) Port Rate.................. 182
10. Internet..................................................................................................................185
10.1 AT*ENAD Ericsson Internet Account Define.................................. 185
11. Identification ........................................................................................................189
11.1 AT Attention Command....................................................... 189
11.2 AT&F Set to Factory Defined Configuration............................ 189
11.3 AT&W Store User Profile .......................................................... 190
11.4 AT* List all Supported AT Commands................................. 190
11.5 AT*ESIR Read MS System Interface Release............................... 190
11.6 AT+CGMI Read MS Manufacturer Identification........................... 191
11.7 AT+CGMM Read MS Model Identification ...................................... 191
11.8 AT+CGMR Read MS Revision Identification................................... 192

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11.9 AT+CGSN Read MS Product Serial Number Identification ............ 192
11.10 AT+GMI Read Manufacturer Identification .................................. 193
11.11 AT+GMM Read Model Identification.............................................. 193
11.12 AT+GMR Read Revision Identification.......................................... 194
11.13 ATI Identification Information .............................................. 194
12. Input/Output.........................................................................................................195
12.1 AT*E2IO Ericsson M2M Input/Output Read/Write....................... 195
13. Interface ................................................................................................................197
13.1 AT+CPIN PIN Control.................................................................... 197
13.2 AT&C Circuit 109 (DCD) Control ............................................ 197
13.3 AT&D Circuit 108 (DTR) Response.......................................... 197
13.4 AT+WS46 Mode Selection............................................................... 198
13.5 ATE Command Echo.............................................................. 198
13.6 ATV DCE Response Format................................................... 199
13.7 ATZ Reset to Default Configuration ...................................... 200
13.8 AT+CMUX Switch to 07.10 Multiplex Protocol ............................... 201
13.9 AT+CRES Restore Settings.............................................................. 203
13.10 AT+ICF Cable Interface Character Format .................................. 204
13.11 AT+IFC DTE-DCE Local Flow Control ...................................... 205
13.12 AT+ILRR Cable Interface Local Rate Reporting............................ 205
13.13 AT+IPR Cable Interface Port Command...................................... 206
13.14 AT*E2ESC M2M Escape Sequence Guard Time.............................. 207
14. Network.................................................................................................................209
14.1 AT*E2CD Ericsson M2M Cell Description..................................... 209
14.2 AT*E2EMM Ericsson M2M Engineering Monitoring Mode.............. 211
14.3 AT*E2SPN M2M Service Provider Indication.................................. 217
14.4 AT*EALS Ericsson Request ALS Status......................................... 217
14.5 AT*ECSP Ericsson Customer Service Profile................................. 218
14.6 AT*EPNR Ericsson Read SIM Preferred Network.......................... 219
14.7 AT*EPNW Ericsson Write SIM Preferred Network......................... 220
14.8 AT*E2SSN Ericsson M2M SIM Serial Number ............................... 221
14.9 AT*ESLN Ericsson Set Line Name................................................. 222
14.10 AT+CIMI Subscriber Identification ................................................ 223
14.11 AT+CLCK Facility Lock .................................................................. 223
14.12 AT+CNUM Subscriber Number......................................................... 225
14.13 AT+COPS Operator Selection.......................................................... 227
14.14 AT+CREG Network Registration ..................................................... 228
15. Phonebook.............................................................................................................229
15.1 AT*E2PBCS Ericsson M2M Phonebook Check Sum ......................... 229
15.2 AT*ESAG Ericsson Add to Group................................................... 229
15.3 AT*ESCG Ericsson Create Group ................................................... 230
15.4 AT*ESCN Ericsson Set Credit Card Number.................................. 231
15.5 AT*ESDG Ericsson Delete Group ................................................... 233
15.6 AT*ESDI Ericsson Delete Group Item ........................................... 233

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15.7 AT*ESGR Ericsson Group Read..................................................... 234
15.8 AT*ESIL Ericsson Silence Command........................................... 234
15.9 AT*ESNU Ericsson Settings Number.............................................. 235
15.10 AT+CPBF Phonebook Find............................................................. 236
15.11 AT+CPBR Phonebook Read............................................................ 236
15.12 AT+CPBS Phone Storage................................................................ 238
15.13 AT+CPBW Phonebook Write........................................................... 239
16. Short Message Services - Point to Point.............................................................241
16.1 AT+CPIN PIN Control.................................................................... 241
16.2 AT*ESMA Ericsson Set Message Alert Sound................................ 241
16.3 AT+CGSMS Select Service for MO SMS Messages.......................... 241
16.4 AT+CSCA Service Centre Address.................................................. 241
16.5 AT+CMGF Message Format............................................................. 242
16.6 AT+CMGW Write Message to Memory ............................................ 243
16.7 AT+CMGS Send Message ................................................................ 245
16.8 AT+CMSS Send From Storage ........................................................ 248
16.9 AT+CMGC Send Command.............................................................. 249
16.10 AT+CPMS Preferred Message Storage ............................................ 252
16.11 AT+CNMI New Message Indications to TE.................................... 253
16.12 AT+CMGR Read Message................................................................ 257
16.13 AT+CMGL List Message .................................................................. 263
16.14 AT+CMGD Delete Message.............................................................. 266
16.15 AT+CSDH Show Text Mode Parameters......................................... 267
16.16 AT+CSMP Set Text Mode Parameters............................................. 267
16.17 AT+CSCS Select Character Set....................................................... 268
16.18 AT*ESTL Ericsson SMS Template List Edit.................................. 269
16.19 AT+CSMS Select Message Service.................................................. 270
17. Short Message Services - Cell Broadcast...........................................................273
17.1 AT+CNMI New Message Indications to TE.................................... 273
17.2 AT+CSCB Select Cell Broadcast Message Type............................. 273
18. SIM Application Toolkit...................................................................................... 275
18.1 AT+CPIN PIN Control.................................................................... 275
18.2 AT*E2STKS SIM Application Toolkit Settings.................................. 275
18.3 AT*E2STKD M2M STK Display Text................................................ 276
18.4 AT*E2STKG M2M STK Get Inkey..................................................... 277
18.5 AT*E2STKI M2M STK Get Input ..................................................... 278
18.6 AT*E2STKL M2M STK Select Item................................................... 280
18.7 AT*E2STKM M2M STK Set Up Menu ............................................... 281
18.8 AT*E2STKN M2M STK Envelope (Menu Selection)......................... 283
18.9 AT*E2STKC M2M STK Set Up Call.................................................. 283
19. Supplementary Services ...................................................................................... 285
19.1 AT+CPIN PIN Control.................................................................... 285
19.2 AT+CACM Accumulated Call Meter................................................ 285
19.3 AT+CAMM Accumulated Call Meter Maximum.............................. 286

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19.4 AT+CAOC Advice of Charge ........................................................... 287
19.5 AT+CPUC Price Per Unit and Currency Table ................................ 288
19.6 AT*EDIF Ericsson Divert Function................................................ 289
19.7 AT*EIPS Identity Presentation Set ................................................ 290
19.8 AT*ELIN Ericsson Line Set............................................................ 291
19.9 AT+CCFC Call Forwarding number and Conditions....................... 291
19.10 AT+CCWA Call Waiting ................................................................... 294
19.11 AT+CHLD Call Hold and Multiparty ............................................... 296
19.12 AT+CLIP Calling Line Identification............................................. 297
19.13 AT+CLIR Calling Line Identification Restriction........................... 299
19.14 AT+CSSN Supplementary Service Notification .............................. 300
19.15 AT+CUSD Unstructured Supplementary Service Data.................... 302
20. Alphabetical Listing of AT Commands..............................................................305

Product Photo/Illustration
Part 1: Overview

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1. Introduction
1.1 Target Users
GM47 and GM48 modules are designed to be integrated into machine-
to-machine or man-to-machine communications applications. They are
intended to be used by to manufacturers, system integrators,
applications developers and developers of wireless communications
equipment.
1.2 Prerequisites
It is assumed that the person integrating the GM47 or GM48 into an
application has a basic understanding of the following:
• GSM networking;
• Wireless communication and antennas (aerials);
• AT commands;
• ITU-T standard V.24/V.28;
• Micro controllers and programming;
• Electronic hardware design.
1.3 Manual Structure
The manual is composed of four parts:
Part 1- Overview
This section provides a broad overview of the GM47/GM48 family and
includes a list of abbreviations used in the manual.
Part 2 - Developer’s Kit
This section lists the contents of the whole development kit and
provides the information to setup and use the equipment.
Part 3 - Integrating the Module
This section describes each of the signals available on the GM47/GM48
modules, along with mechanical information. The section also provides
you with design guidelines and explains what is needed to
commercialise an application from a regulatory point of view.

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Part 4 - Using AT Commands
This section lists all the AT Commands relevant to the GM47 and
GM48, including their required parameters. The purpose of part 4 is to
give you detailed information on the function of the AT Command set.

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2. GM47/GM48 Modules
2.1 About the GM47/GM48 Family
Two modules make up the family; GM47 and GM48, for use in the
900/1800MHz and 850/1900MHz GSM bands respectively.
Note! As the characteristics ofthe modules are quite similar, this manual only
refers to the GM48 where a difference exists; by default all other
references are to the GM47.
Theproductsbelong to a new generationof SonyEricssonmodules,and
are intended to be used in machine-to-machineapplications and man-to-
machine applications. They are used when there is a need to send and
receive data (by SMS, CSD, HSCSD, or GPRS), and make voice calls
over the GSM network.
GM47 modules are not “stand alone” devices; they are used as the
engine in an application created by the customer. A typical application,
involves a micro-controller and GM47 module, in which the micro-
controller sends AT commands to the module via an RS232
communications link.
2.2GM47inaCommunicationSystem
Figure 2.1 illustrates the main blocks of a wireless communication
system using the GM47. It also shows the communication principles of
the system. The definitions in the figure, as used elsewhere in this
manual, are in accordance with the recommendations of GSM 07.07.
• The MS (mobile station) represents the GM47 module plus SIM
card. The module excluding SIM card, is known as the ME (mobile
equipment).
• The TE (terminal equipment) is a micro-controller (i.e., a computer)
and is a part of the application.
Figure 2.1 Main Blocks in a Wireless System
TE
(DTE) AT commands to control MS
ME status, responses
MS
(GM47)
GSM Network
Application
Wireless ommunication System

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In accordance with the recommendations of ITU-T (International
Telecommunication Union - Telecommunications Standardisation
Sector) V.24, the TE communicates with the MS over a serial interface.
The functions of the GM47 follow the recommendations provided by
ETSI (European Telecommunications Standards Institute) and ITU-T.
ETSI specifies a set of AT commands for controlling the GSM element
of the module; these commands are supplemented by Sony Ericsson
specific commands.
To find out how to work with AT commands, see “Part 4: Using AT
Commands”, page 75.
Figure 2.2 illustrates the interface between the module and the
application. The entire System Connector Interface is described in
detail in “System Connector Interface”, page 41.
Figure 2.2 The Interface between the Module and the Application
Note! ITU-T standards define TE and TA asDTE (Data Terminal Equipment)
and DCE (Data Circuit Terminating Equipment) respectively.
Signals
and power
60 pin
system connector
TE
(Application)
MS
(GM47)
Antenna
connector

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2.3 Features
The module performs a set of telecom services (TS) according to GSM
standard phase 2+, ETSI and ITU-T. The functions of the module are
implemented by issuing AT commands over a serial interface.
2.3.1 Types of Mobile Station
GM47 and GM48 are dual band mobile stations with the characteristics
shown in the tables below.
GM47 GSM900 E-GSM900 GSM1800
Frequency Range (MHz) TX: 890-915
RX: 935-960 TX: 880-890 RX: 925-935 TX: 1710-1785 RX: 1805-1880
Channel spacing 200kHz 200kHz
Number of channels 173carriers*8(TDMA)
GSM: channels 1 to 124
E-GSM: channels 975 to 1023
374carriers*8(TDMA)
DCS: channels 512 to 885
Modulation GMSK GMSK
TX phase accuracy <5ºRMSphaseerror(burst) < 5º RMS phase error (burst)
Duplex spacing 45MHz 95MHz
Receiver sensitivity at
antenna connector <–102dBm <–102dBm
Transmitter output power
at antenna connector Class 4
2W(33dBm) Class 1 1W(30dBm)
Automatic hand-over between GSM900 and GSM1800
GM48 GSM850 GSM1900
Frequency Range (MHz) TX: 824-849
RX: 869-894 TX: 1850-1910 RX: 1930-1990
Channel spacing 200kHz 200kHz
Number of channels 123carriers*8(TDMA)
GSM: channels 128 to 251 298carriers*8(TDMA) PCS: channels 512 to 810
Modulation GMSK GMSK
TX Phase Accuracy <5ºRMSphaseerror(burst) < 5º RMS phase error (burst)
Duplex spacing 45MHz 80MHz
Receiver sensitivity at
antenna connector <–102dBm <–102dBm
Transmitter output power
at antenna connector Class 5 0.8W (29dBm) Class 1 1W(30dBm)
Automatic hand-over between GSM850 and GSM1900

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2.3.2 Short Message Service
The module 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).
• 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 bytes. The
module supports up to 6 concatenated messages to extend this function.
2.3.3 Voice Calls
The GM47 offers the capability of mobile originated and mobile
terminated voice calls, as well as supporting emergency calls.
Multi-party, call waiting and call deflection features are available.
Some of these features are network-operator specific.
For the inter-connection of audio, the module offers both single ended
and balanced analogue input and output lines. Direct interface to the
digital PCM (pulse code modulation) bus used within the module is
available, thus by-passing the internal analogue circuitry. The GM47
has an embedded echo cancellation and noise suppression for improved
audio quality.
2.3.4 Data
The module supports the following data protocols:
• GPRS (General Packet Radio Service)
Modules are Class B terminals, which provide simultaneous
activation and attachment of GPRS and GSM services. GM47
modules are GPRS 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).
• CSD (Circuit Switched Data)
GM47 modules are capable of establishing a CSD communication at
9.6kbps.
• HSCSD (High Speed Circuit Switched Data).
GM47 supports HSCSD communication, with one timeslot per
frame capacity in the up link and two timeslots per frame capacity in
the down link (2+1).

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2.3.5 SIM Card
An external SIM card with 3V or 5V technology, can be connected to
the module via its 60-pin system connector.
2.3.6 Average Power Consumption
Note! The power consumption during transmission is measured at maximum
transmitted power.
2.3.7 Other Features
These include:
• Internet-ready module.
• 07.10 multiplexing.
• GPS interoperability.
• SIM application tool kit.
2.4 Service and Support
2.4.1 Web Pages
Visit our web site for the following information:
• where to buy modules or for recommendations concerning
accessories and components;
• the telephone number for customer support in your region;
• FAQs (frequently asked questions).
The web site address is:
http://www.sonyericsson.com/M2M
2.4.2 Integrator’s Manual
This manual provides you with all of the information you need to
integrate the module into your application.
Idle Mode Transmit/Operation
GSM850 and GSM900 Voice/CSD <5mA <250mA (<2Apeak)
Data (GPRS 4+1) <5mA <350mA(<2Apeak)
GSM1800 and GSM1900 Voice/CSD <5mA <250mA (<1.75A peak)
Data (GPRS 4+1) <5mA <350mA (<1.75A peak)

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2.4.3 Developer’s Kit
Sony Ericsson provides the opportunity for designers to test the module
on a limited scale using it’s Development Kit. The kit includes the
necessary accessories (software and hardware) required to build and test
an application. It includes the following:
• GSM module, GM47 or GM48;
• This integrator’s manual;
• Software developer’s kit and manual;
• Developer’s kit hardware.
All the user needs to provide, is a computer or micro-controller and the
expertise to use AT commands.
2.5 Precautions
GM47 and GM48 modules are static sensitive devices (SSDs). Normal
SSD procedures for electronic devices should be used when handling
the modules. In “Part 3: Integrating the Module”, page 37 you will find
more information about safety and product care. Do not exceed the
environmental and electrical limits as specified in “Technical Data”,
page 73.