Sony 6220501-BV Transmitter module for mobile applications User Manual GM47 Integrators Manual

Sony Mobile Communications Inc Transmitter module for mobile applications GM47 Integrators Manual

Exhibit 8 Integrators Manual

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Document ID247869
Application IDlp4xBWRJZNl4UXuI/LH5/w==
Document DescriptionExhibit 8 Integrators Manual
Short Term ConfidentialNo
Permanent ConfidentialNo
SupercedeNo
Document TypeUser Manual
Display FormatAdobe Acrobat PDF - pdf
Filesize196.16kB (2452056 bits)
Date Submitted2002-06-07 00:00:00
Date Available2002-06-26 00:00:00
Creation Date2002-06-07 18:57:21
Producing SoftwareAcrobat Distiller 4.05 for Windows
Document Lastmod2002-06-07 19:05:40
Document TitleGM47 Integrators Manual.book
Document CreatorFrameMaker 6.0

GM47/GM48
Product Photo/Illustration
The product described in this manual 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 be incorporated 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.
Contents
Part 1: Overview................................................................................................. 11
1.
Introduction............................................................................................................ 13
1.1
1.2
1.3
2.
GM47/GM48 Modules ........................................................................................... 15
2.1
2.2
2.3
2.4
2.5
3.
Target Users
......................................................................................... 13
Prerequisites
......................................................................................... 13
Manual Structure ......................................................................................... 13
About the GM47/GM48 Family .................................................................. 15
GM47 in a Communication System............................................................. 15
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
Service and Support ..................................................................................... 19
2.4.1
Web Pages....................................................................................... 19
2.4.2
Integrator’s Manual........................................................................ 19
2.4.3
Developer’s Kit ............................................................................... 20
Precautions
......................................................................................... 20
Abbreviations ......................................................................................................... 21
Part 2: Developer’s Kit ....................................................................................... 23
1.
Introduction............................................................................................................ 25
1.1
1.2
1.3
2.
Overview
......................................................................................... 25
Contents of the Kit ....................................................................................... 25
General Functioning of the Kit .................................................................... 26
Using the Developer’s Kit...................................................................................... 29
2.1
2.2
2.3
2.4
Start up Check List.......................................................................................
Developer’s Board Overlay..........................................................................
Jumpers, Switches and Connectors ..............................................................
System Connector Pin Assignments ............................................................
30
31
32
36
Part 3: Integrating the Module............................................................................ 37
1.
Mechanical Description ......................................................................................... 39
1.1
1.2
Interface Description .................................................................................... 39
Physical Dimensions .................................................................................... 40
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GM47/GM48 INTEGRATOR’S MANUAL
2.
System Connector Interface ..................................................................................41
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
2.12
2.13
2.14
2.15
2.16
2.17
Overview
.......................................................................................... 41
General Electrical and Logical Characteristics ............................................ 44
2.2.1
General Protection Requirements ...................................................44
Grounds
.......................................................................................... 45
2.3.1
Analogue Ground - AGND ..............................................................45
2.3.2
Digital Ground - DGND..................................................................45
VCC - Regulated Power Supply Input ......................................................... 45
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
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
Digital Audio
.......................................................................................... 52
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
SIM Card Related Signals ............................................................................ 57
2.9.1
SIM Detection - SIMPRESENCE ....................................................58
Service/Programming ................................................................................... 59
Buzzer
.......................................................................................... 59
LED
.......................................................................................... 59
General Purpose Digital I/O Ports ................................................................ 60
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
External I 2C Serial Control Bus .................................................................. 63
TX_ON - Burst Transmission....................................................................... 63
Real Time Clock .......................................................................................... 64
3.
Antenna Connector ................................................................................................65
4.
Hints for Integrating the Module..........................................................................67
4.1
4.2
4.3
Safety Advice and Precautions ..................................................................... 67
4.1.1
General ............................................................................................67
4.1.2
SIM Card .........................................................................................67
4.1.3
Antenna............................................................................................68
Installation of the Module............................................................................. 68
4.2.1
Where to Install the Module ............................................................68
4.2.2
How to Install the Module ...............................................................69
Antenna
.......................................................................................... 70
4.3.1
General ............................................................................................70
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4.3.2
4.3.3
4.3.4
4.3.5
5.
Antenna Type .................................................................................. 71
Antenna Placement ......................................................................... 71
The Antenna Cable.......................................................................... 71
Possible Communication Disturbances .......................................... 72
Technical Data........................................................................................................ 73
Part 4: Using AT Commands.............................................................................. 75
1.
Introduction to AT Commands ............................................................................ 77
1.1
1.2
1.3
1.4
2.
Call Control ............................................................................................................ 85
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
2.12
2.13
3.
Overview
......................................................................................... 77
Syntax Description ....................................................................................... 77
1.2.1
Conventions..................................................................................... 77
1.2.2
AT Command Syntax....................................................................... 78
1.2.3
AT Response Syntax ........................................................................ 79
Error Codes
......................................................................................... 81
1.3.1
+CME ERROR (Mobile Equipment Error Code)........................... 81
1.3.2
+CMS ERROR (Message Service Failure Result Code) ................ 82
Examples on How to Use the AT Commands ............................................ 83
AT+CPIN
ATA
ATD
ATH
ATL
ATO
ATP
ATT
ATX
AT+CHUP
AT+CMOD
AT+CVHU
AT+VTS
PIN Control......................................................................
Answer Incoming Call .....................................................
Dial ..................................................................................
Hang up............................................................................
Monitor Speaker Loudness ..............................................
Return to Online Data Mode............................................
Select Pulse Dialling........................................................
Select Tone Dialling ........................................................
Call Progress Monitoring Control ...................................
Hang up Call ....................................................................
Call Mode ........................................................................
Voice Hang-Up................................................................
DTMF and Tone Generation ...........................................
85
85
86
88
88
89
89
89
90
90
91
92
92
Control and Status ................................................................................................. 95
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
ATQ
ATS0
ATS2
ATS3
ATS4
ATS5
ATS6
ATS7
ATS8
ATS10
AT*ECAM
Result Code Suppression ................................................. 95
Automatic Answer Control.............................................. 95
Escape Sequence Character ............................................. 96
Command Line Termination Character ........................... 96
Response Formatting Character....................................... 97
Command Line Editing Character (BACKSPACE)........ 98
Blind Dial Delay Control................................................. 98
Connection Completion Timeout .................................... 99
Comma Dial Modifier Delay Control.............................. 99
Automatic Disconnect Delay Control............................ 100
Ericsson Call Monitoring............................................... 100
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GM47/GM48 INTEGRATOR’S MANUAL
3.12
3.13
3.14
3.15
3.16
3.17
3.18
3.19
3.20
3.21
3.22
3.23
3.24
3.25
3.26
3.27
3.28
3.29
3.30
3.31
3.32
3.33
4.
AT*E2EAMS
AT*E2APR
AT*EALR
AT*EAMS
AT*EARS
AT*E2PHFB
AT*ELAM
AT*EMIC
AT*EMIR
AT*EPRR
AT*EPRW
AT*ERIL
AT*ERIN
AT*ERIP
AT*ESMA
AT*ESOM
AT*EXVC
ATM
Ericsson M2M Audio Profile Modification ................... 121
M2M Audio Profile Manipulation ................................. 127
Ericsson Audio Line Request ......................................... 129
Ericsson Audio Mode Selection..................................... 130
Ericsson Audio Ring Signal ........................................... 132
Portable Handsfree Button Sense Enable....................... 133
Ericsson Local Audio Mode........................................... 133
Ericsson Microphone Mode ........................................... 134
Ericsson Music Mute Indication Request ...................... 134
Ericsson Personal Ring Type Read ................................ 136
Ericsson Personal Ringtype Write ................................. 137
Ericsson Ring Level Set ................................................. 139
Ericsson Ring Set ........................................................... 140
Ericsson Ring Signal Playback Command..................... 141
Ericsson Set Message Alert Sound ................................ 142
Ericsson Settings Own Melody ...................................... 142
Ericsson SET External Volume Control ........................ 144
Monitor Speaker Control................................................ 145
Data - CSD/HSCSD ..............................................................................................147
5.1
5.2
6.
Ericsson Daylight Saving Time ..................................... 102
Ericsson Master Reset .................................................... 103
Ericsson Pin Event ......................................................... 103
Ericsson Settings Minute Minder................................... 104
Set Alarm ....................................................................... 104
Alarm Delete .................................................................. 105
Postpone or Dismiss an Alarm ....................................... 105
Set Clock and Date......................................................... 106
Extended Error Report ................................................... 106
Set Phone Functionality ................................................. 107
Indicator Control ............................................................ 108
List all available AT Commands.................................... 109
Mobile Equipment Error ................................................ 109
Mobile Equipment Event Reporting .............................. 110
Phone Activity Status ..................................................... 111
PIN Control .................................................................... 113
Change Password ........................................................... 115
Service Reporting Control.............................................. 117
Cellular Result Code ...................................................... 117
Save Settings .................................................................. 118
Signal Strength ............................................................... 118
Automatic Time Zone Update........................................ 119
Audio......................................................................................................................121
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
4.10
4.11
4.12
4.13
4.14
4.15
4.16
4.17
4.18
5.
AT*EDST
AT*EMAR
AT*EPEE
AT*ESMM
AT+CALA
AT+CALD
AT+CAPD
AT+CCLK
AT+CEER
AT+CFUN
AT+CIND
AT+CLAC
AT+CMEE
AT+CMER
AT+CPAS
AT+CPIN
AT+CPWD
AT+CR
AT+CRC
AT+CSAS
AT+CSQ
AT+CTZU
AT+CBST
AT+CRLP
Select Bearer Service Type ............................................ 147
Radio Link Protocol ....................................................... 149
Data - GPRS..........................................................................................................151
LZT 123 7263 R1A
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
6.10
7.
151
152
153
154
156
157
158
160
163
164
AT+CHSC
AT+CHSD
AT+CHSN
AT+CHSR
AT+CHSU
HSCSD Current Call Parameters...................................
HSCSD Device Parameters ...........................................
HSCSD Non Transparent Call Configuration ...............
HSCSD Parameters Report............................................
HSCSD Automatic User Initiated Upgrading................
165
166
167
169
170
Data - WAP........................................................................................................... 171
8.1
8.2
8.3
8.4
8.5
8.6
8.7
8.8
8.9
8.10
8.11
8.12
9.
PDP Context Activate or Deactivate .............................
GPRS Attach or Detach .................................................
Enter Data State .............................................................
Define PDP Context ......................................................
GPRS Event Reporting ..................................................
Show PDP Address........................................................
Quality of Service Profile (Minimum Acceptable) .......
Quality of Service Profile (Requested)..........................
GPRS Network Registration Status ...............................
Select Service for MO SMS Messages..........................
Data - HSCSD....................................................................................................... 165
7.1
7.2
7.3
7.4
7.5
8.
AT+CGACT
AT+CGATT
AT+CGDATA
AT+CGDCONT
AT+CGEREP
AT+CGPADDR
AT+CGQMIN
AT+CGQREQ
AT+CGREG
AT+CGSMS
AT*EWBA
AT*EWBR
AT*EWCG
AT*EWCT
AT*EWDT
AT*EWHP
AT*EWIL
AT*EWLI
AT*EWPA
AT*EWPB
AT*EWPN
AT*EWPR
Ericsson WAP Bookmark Add......................................
Ericsson WAP Bookmark Read.....................................
Ericsson WAP CSD Gateway........................................
Ericsson WAP Connection Timeout..............................
Ericsson WAP Download Timeout ...............................
Ericsson WAP Homepage .............................................
Ericsson WAP Image Load ...........................................
Ericsson WAP Login .....................................................
Ericsson WAP Push Access Setting ..............................
Ericsson WAP Preferred Bearer ....................................
Ericsson WAP Profile Name .........................................
Ericsson WAP Profile....................................................
171
172
173
174
174
175
175
176
177
177
178
179
GPS Interoperability ........................................................................................... 181
9.1
9.2
AT*EENMEA
AT*E2NMPR
NMEA (GPS) Mode on UART2 ................................... 181
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
11.2
11.3
11.4
11.5
11.6
11.7
11.8
AT
AT&F
AT&W
AT*
AT*ESIR
AT+CGMI
AT+CGMM
AT+CGMR
Attention Command.......................................................
Set to Factory Defined Configuration............................
Store User Profile ..........................................................
List all Supported AT Commands .................................
Read MS System Interface Release...............................
Read MS Manufacturer Identification ...........................
Read MS Model Identification ......................................
Read MS Revision Identification...................................
189
189
190
190
190
191
191
192
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GM47/GM48 INTEGRATOR’S MANUAL
11.9
11.10
11.11
11.12
11.13
AT+CGSN
AT+GMI
AT+GMM
AT+GMR
ATI
Read MS Product Serial Number Identification ............ 192
Read Manufacturer Identification .................................. 193
Read Model Identification.............................................. 193
Read Revision Identification.......................................... 194
Identification Information .............................................. 194
12. Input/Output .........................................................................................................195
12.1 AT*E2IO
Ericsson M2M Input/Output Read/Write....................... 195
13. Interface ................................................................................................................197
13.1
13.2
13.3
13.4
13.5
13.6
13.7
13.8
13.9
13.10
13.11
13.12
13.13
13.14
AT+CPIN
AT&C
AT&D
AT+WS46
ATE
ATV
ATZ
AT+CMUX
AT+CRES
AT+ICF
AT+IFC
AT+ILRR
AT+IPR
AT*E2ESC
PIN Control .................................................................... 197
Circuit 109 (DCD) Control ............................................ 197
Circuit 108 (DTR) Response.......................................... 197
Mode Selection............................................................... 198
Command Echo .............................................................. 198
DCE Response Format ................................................... 199
Reset to Default Configuration ...................................... 200
Switch to 07.10 Multiplex Protocol ............................... 201
Restore Settings.............................................................. 203
Cable Interface Character Format .................................. 204
DTE-DCE Local Flow Control ...................................... 205
Cable Interface Local Rate Reporting............................ 205
Cable Interface Port Command ...................................... 206
M2M Escape Sequence Guard Time.............................. 207
14. Network .................................................................................................................209
14.1
14.2
14.3
14.4
14.5
14.6
14.7
14.8
14.9
14.10
14.11
14.12
14.13
14.14
AT*E2CD
AT*E2EMM
AT*E2SPN
AT*EALS
AT*ECSP
AT*EPNR
AT*EPNW
AT*E2SSN
AT*ESLN
AT+CIMI
AT+CLCK
AT+CNUM
AT+COPS
AT+CREG
Ericsson M2M Cell Description..................................... 209
Ericsson M2M Engineering Monitoring Mode.............. 211
M2M Service Provider Indication.................................. 217
Ericsson Request ALS Status......................................... 217
Ericsson Customer Service Profile................................. 218
Ericsson Read SIM Preferred Network.......................... 219
Ericsson Write SIM Preferred Network ......................... 220
Ericsson M2M SIM Serial Number ............................... 221
Ericsson Set Line Name ................................................. 222
Subscriber Identification ................................................ 223
Facility Lock .................................................................. 223
Subscriber Number......................................................... 225
Operator Selection.......................................................... 227
Network Registration ..................................................... 228
15. Phonebook .............................................................................................................229
15.1
15.2
15.3
15.4
15.5
15.6
AT*E2PBCS
AT*ESAG
AT*ESCG
AT*ESCN
AT*ESDG
AT*ESDI
Ericsson M2M Phonebook Check Sum ......................... 229
Ericsson Add to Group................................................... 229
Ericsson Create Group ................................................... 230
Ericsson Set Credit Card Number .................................. 231
Ericsson Delete Group ................................................... 233
Ericsson Delete Group Item ........................................... 233
LZT 123 7263 R1A
15.7
15.8
15.9
15.10
15.11
15.12
15.13
AT*ESGR
AT*ESIL
AT*ESNU
AT+CPBF
AT+CPBR
AT+CPBS
AT+CPBW
Ericsson Group Read .....................................................
Ericsson Silence Command ...........................................
Ericsson Settings Number..............................................
Phonebook Find .............................................................
Phonebook Read ............................................................
Phone Storage ................................................................
Phonebook Write ...........................................................
234
234
235
236
236
238
239
16. Short Message Services - Point to Point............................................................. 241
16.1
16.2
16.3
16.4
16.5
16.6
16.7
16.8
16.9
16.10
16.11
16.12
16.13
16.14
16.15
16.16
16.17
16.18
16.19
AT+CPIN
AT*ESMA
AT+CGSMS
AT+CSCA
AT+CMGF
AT+CMGW
AT+CMGS
AT+CMSS
AT+CMGC
AT+CPMS
AT+CNMI
AT+CMGR
AT+CMGL
AT+CMGD
AT+CSDH
AT+CSMP
AT+CSCS
AT*ESTL
AT+CSMS
PIN Control....................................................................
Ericsson Set Message Alert Sound ................................
Select Service for MO SMS Messages..........................
Service Centre Address..................................................
Message Format.............................................................
Write Message to Memory ............................................
Send Message ................................................................
Send From Storage ........................................................
Send Command..............................................................
Preferred Message Storage ............................................
New Message Indications to TE ....................................
Read Message ................................................................
List Message ..................................................................
Delete Message..............................................................
Show Text Mode Parameters.........................................
Set Text Mode Parameters.............................................
Select Character Set .......................................................
Ericsson SMS Template List Edit..................................
Select Message Service..................................................
241
241
241
241
242
243
245
248
249
252
253
257
263
266
267
267
268
269
270
17. Short Message Services - Cell Broadcast ........................................................... 273
17.1 AT+CNMI
17.2 AT+CSCB
New Message Indications to TE .................................... 273
Select Cell Broadcast Message Type............................. 273
18. SIM Application Toolkit...................................................................................... 275
18.1
18.2
18.3
18.4
18.5
18.6
18.7
18.8
18.9
AT+CPIN
AT*E2STKS
AT*E2STKD
AT*E2STKG
AT*E2STKI
AT*E2STKL
AT*E2STKM
AT*E2STKN
AT*E2STKC
PIN Control....................................................................
SIM Application Toolkit Settings..................................
M2M STK Display Text................................................
M2M STK Get Inkey.....................................................
M2M STK Get Input .....................................................
M2M STK Select Item...................................................
M2M STK Set Up Menu ...............................................
M2M STK Envelope (Menu Selection).........................
M2M STK Set Up Call ..................................................
275
275
276
277
278
280
281
283
283
19. Supplementary Services ...................................................................................... 285
19.1 AT+CPIN
19.2 AT+CACM
19.3 AT+CAMM
PIN Control.................................................................... 285
Accumulated Call Meter................................................ 285
Accumulated Call Meter Maximum .............................. 286
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GM47/GM48 INTEGRATOR’S MANUAL
19.4
19.5
19.6
19.7
19.8
19.9
19.10
19.11
19.12
19.13
19.14
19.15
AT+CAOC
AT+CPUC
AT*EDIF
AT*EIPS
AT*ELIN
AT+CCFC
AT+CCWA
AT+CHLD
AT+CLIP
AT+CLIR
AT+CSSN
AT+CUSD
Advice of Charge ........................................................... 287
Price Per Unit and Currency Table ................................ 288
Ericsson Divert Function................................................ 289
Identity Presentation Set ................................................ 290
Ericsson Line Set............................................................ 291
Call Forwarding number and Conditions ....................... 291
Call Waiting ................................................................... 294
Call Hold and Multiparty ............................................... 296
Calling Line Identification ............................................. 297
Calling Line Identification Restriction........................... 299
Supplementary Service Notification .............................. 300
Unstructured Supplementary Service Data .................... 302
20. Alphabetical Listing of AT Commands..............................................................305
10
LZT 123 7263 R1A
Part 1: Overview
Product Photo/Illustration
1. Introduction
1.1 Target Users
GM47 and GM48 modules are designed to be integrated into machineto-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.
13
LZT 123 7263 R1A
GM47/GM48 INTEGRATOR’S MANUAL
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.
14
LZT 123 7263 R1A
GM47/GM48 MODULES
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 of the modules are quite similar, this manual only
refers to the GM48 where a difference exists; by default all other
references are to the GM47.
The products belong to a new generation of Sony Ericsson modules, and
are intended to be used in machine-to-machine applications and man-tomachine 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 microcontroller sends AT commands to the module via an RS232
communications link.
2.2 GM47 in a Communication System
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.
Wireless Communication System
GSM Network
Application
TE
(DTE)
ME status, responses
AT commands to control MS
MS
(GM47)
Figure 2.1 Main Blocks in a Wireless 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.
Signals
and power
MS
(GM47)
Antenna
connector
TE
(Application)
60 pin
system connector
Figure 2.2 The Interface between the Module and the Application
Note!
ITU-T standards define TE and TA as DTE (Data Terminal Equipment)
and DCE (Data Circuit Terminating Equipment) respectively.
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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
GSM 900
E-GSM900
GSM 1800
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
173 carriers *8 (TDMA)
GSM: channels 1 to 124
E-GSM: channels 975 to 1023
374 carriers *8 (TDMA)
DCS: channels 512 to 885
Modulation
GMSK
GMSK
TX phase accuracy
< 5º RMS phase error (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 GSM 900 and GSM1800
GM48
GSM 850
GSM 1900
Frequency Range (MHz)
TX: 824-849
RX: 869-894
TX: 1850-1910
RX: 1930-1990
Channel spacing
200kHz
200kHz
Number of channels
123 carriers *8 (TDMA)
GSM: channels 128 to 251
298 carriers *8 (TDMA)
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
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
Idle Mode
Transmit/Operation
Voice/CSD
<5mA
<250mA (<2A peak)
Data (GPRS 4+1)
<5mA
<350mA (<2A peak)
Voice/CSD
<5mA
<250mA (<1.75A peak)
Data (GPRS 4+1)
<5mA
<350mA (<1.75A peak)
GSM850 and GSM900
GSM1800 and GSM 1900
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.
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GM47/GM48 INTEGRATOR’S MANUAL
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.
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ABBREVIATIONS
3. Abbreviations
Abbreviation
Explanations
BT
Bluetooth
CBM
Cell Broadcast Message
CBS
Cell Broadcast Service
CSD
Circuit Switched Data
DCE
Data Circuit Terminating Equipment
DTE
Data Terminal Equipment
DTMF
Dual Tone Multi Frequency
EFR
Enhanced Full Rate
EMC
Electro-Magnetic Compatibility
ETSI
European Telecommunication Standards Institute
FR
Full Rate
GPRS
General Packet Radio Service
GPS
Global Positioning System
GSM
Global System for Mobile Communication
HR
Half Rate
HSCSD
High Speed Circuit Switched Data
ITU-T
International Telecommunication Union - Telecommunications
Standardisation Sector
ME
Mobile Equipment
MO
Mobile Originated
MS
Mobile Station
MT
Mobile Terminated
PCM
Pulse Code Modulation
PDU
Protocol Data Unit
RLP
Radio Link Protocol
RF
Radio Frequency
RTC
Real Time Clock
SDP
Service Discovery Protocol
SIM
Subscriber Identity Module
SMS
Short Message Service
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GM47/GM48 INTEGRATOR’S MANUAL
Abbreviation
Explanations
TA
Terminal Adapter
TE
Terminal Equipment
THD
Third Harmonic Distortion
TS
Telecom Services
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Part 2: Developer’s Kit
Product Photo/Illustration
1. Introduction
1.1 Overview
The developer’s kit is designed to get you started quickly. It contains all
the hardware you will need to begin the development of an application.
The only items you need to provide are; a computer or micro controller,
a SIM card and network subscription, and a knowledge of programming
with AT commands.
Note!
Before connecting up and using the developer’s kit, we strongly
recommend you read “Part 3: Integrating the Module”, page 37 and all
of this section. There are many switches, jumpers and connector options
in the developer’s kit. A knowledge of the functionality of the GM47
module is therefore essential before you start altering the hardware
settings.
The main hardware in the developer’s kit is a screened box, containing
a board onto which you plug the GM47 module. Connectors, switches,
jumpers and SIM card holder are provided to allow you to configure and
access all the functions of the module.
1.2 Contents of the Kit
Please take the time to check the contents of your kit against the list
shown below. If any of the items are missing contact your supplier
immediately.
Developer’s kit - Part Number DPY 102 218
Contents:
Description
Product Number
Radio modem:
GM47 module or
GM48 module
DPY 102 201
DPY 102 204
Qty
GM47/GM48 developer’s kit (screened
box and development board)
KRY 101 1907
Switched mode PSU 12V d.c.
EPA-121DA-12
UK mains plug
EN90POWERLEADUK
European mains plug
EN90POWERLEADEU
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GM47/GM48 INTEGRATOR’S MANUAL
Description
Product Number
Qty
Cable with connector/cable serial 9-9 PIN
DB9(M)-DB9(F)
Portable handsfree
2002-1-24
Quad band antenna
RG174
Data carrier/CD-ROM containing:
Software Manual;
Integrator’s Manual
LZY 213 1319
1.3 General Functioning of the Kit
The following block diagrams are provided to help you understand the
general principles of operation of the developer’s kit.
You have the following options as shown in Figure 1.1:
• Connect the GM47 internally, direct to J4 or position it externally
and connect to J10 via a flat cable.
• Use the kit’s connectors to access and control the GM47 (all
switches and jumpers in their default positions).
• Access and control the GM47 directly via J12 and a flat cable. This
allows you to selectively bypass any circuits contained on the board,
and test your own application.
J12
Pin header
60 pins male
1.27mm pitch
Pins connected in parallel
External
Application
J11
J10
J4
User selectable
jumpers
fit direct to J4
GM47
alternate flat cable to J10
Developer's
board circuits
and ports
Pin header
60 pins male
2.54mm pitch
Pin headers
60 pins female
1.27mm pitch
Developer's board
Figure 1.1 Module connections to the developer’s board
Figure 1.2 shows the various on-board voltages and how they are fed to
the GM47 and other circuitry. The developer’s board is powered by an
external power supply connected to Vcc.
26
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INTRODUCTION
5V to development
board circuits
5V
reg.
VIO present
LED
Switched
when VIO
present
2V7
2V7
reg.
To development
board & interface
circuits
VIO
GM47
VCC
3V8
3V8
reg.
12v
Vcc
DC Power Socket,
Input 10..15V
TP4 TP5
Figure 1.2 Power supply connection and the on-board voltages
Figure 1.3, Figure 1.4 and Figure 1.5 show how various signals are
routed on the developer’s board. Thicker lines indicate multiple signals.
J12
VIO
General purpose I/O
LED
STATUS LED
(Blinks when
connected to network)
ON/OFF
GM47
SERVICE
ON/OFF
SW4
2V7
I²C
SERVICE LED
n/c
(Lit when SW4 closed)
VRTC
SIM
0.22F
J5
Selectable
Jumpers
U10 SIM
SIM holder with
SIM presence
switch (to DGND)
Figure 1.3 Miscellaneous signals, connection and routing
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J12
ATMS
EAR (Audio out)
3.5mm socket
AFMS
MIC (Audio in)
3.5mm socket
GM47
MICN, MICP, BEARN, BEARP
Handset
RJ11 connector
Buzzer
Buzzer
PCM
PCM
Selectable
Jumpers
8 pin Mini-DIN
Figure 1.4 Audio signals, connection and routing
J12
TD, RD, DTR, DCD,
RTS, CTS, RI
GM47
UART1 (EDB)
TD2, RD2 & SERVICE
UART2 (ACB)
TD3 & RD3
UART3
Selectable
jumpers
Level shifters
Figure 1.5 Comms signals, connection and routing
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2. Using the Developer’s Kit
This section provides you with the information needed to setup and use
the developer’s kit. Before changing switch and jumper settings, refer
to “2.3 Jumpers, Switches and Connectors”, page 32.
Front and rear views of the developer’s kit are shown below. To access
the inside, remove the 8 screws on the top of the box and the cover plate.
Vcc
NC
OFF
ON
12v
+5V
OFF
APP
ON/OFF
DCIO
VIO
STATUS
SERVICE
s Kit
Developer'
/G
GM
HANDSET PCM
MIC
EAR
Figure 2.1 Front view
RF
UART3
UART1
UART2
Figure 2.2 Rear view
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GM47/GM48 INTEGRATOR’S MANUAL
2.1 Start up Check List
To use the developer’s kit in standard format check the following:
• With the case lid removed, make sure the GM47 module is plugged
into J4 and the RF lead is connected to the rear of the module;
• Add your SIM card;
• Check the jumpers are in their default positions. Refer to Figure 2.3;
• Connect the serial cable between your computer and UART1 on the
rear panel;
• Connect the antenna to the RF connector on the rear panel;
• Connect the audio equipment if required;
• Plug the external power supply into the socket marked 12v on the
front panel;
• Switch Vcc to ON;
• Push ON/OFF for at least 2 seconds until the yellow VIO LED is on.
Your developer’s kit should now be operational and ready to receive AT
commands.
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USING THE DEVELOPER’S KIT
2.2 Developer’s Board Overlay
Figure 2.3 shows the developer’s board, including the position of all the
connectors, switches and jumpers (default positions). You will notice
that many jumpers are labelled “SW”. This is because the board was
previously fitted with DIL switches.
UART2
(ACB)
UART1
(EDB)
UART3
RF connector
Ground stud
U10
SIM
Holder
VCC
TP5 TP4
SIM test
connector
J5
J11
J12
JP24
59
60
59
SW5
SW10
J4
System Connector
SW3
60
SW7
59
JP21
SW6
System Connector (for flat cable)
SW11
60
Test Connector
SW9
60
59
JP18
SW1
J10
Application Connector
SW8
DCIO
Maintain in
OFF position
(Not used with this module.
Only present for backward
compatibility)
ON/OFF
(module)
SERVICE
Vcc
STATUS
12v
DC Power NC/OFF/ON
Socket,
power to
Input
module
10..15V d.c.
VIO
SW4
Handset
PCM
MIC
EAR
Audio in Audio out
(ATMS) (AFMS)
Figure 2.3 Developer’s board overlay
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2.3 Jumpers, Switches and Connectors
You will notice that many jumpers are labelled “SW”. This is because
the board was previously fitted with DIL switches. All jumpers are
located on the developer’s board (see “Developer’s board overlay”,
page 31).
Jumper
Signal
Setting
JP18
TD
Maintain jumper in
lower default position
JP21
RD
Maintain jumper in
lower default position
JP24
Reserved for
future use
MUST remain open to prevent
damage to the module. As an extra
precaution, maintain DCIO in the OFF
position
SW4
SERVICE
Connect the pins using the floating
connector ONLY when programming
the module or logging data
SW1, SW3, SW5,
SW6, SW7, SW8,
SW9, SW10,
SW11, J11 links
See diagram
below
Default positions shown below. Move
any “SW” jumper to the right-hand
position to divert the signal to
connector J12. Remove the J11 links
to bypass J8, J9 or CP1 and process
audio signals externally
JP21 JP18
J11
ON/OFF
PRESENCE
SIMVCC
SIMDAT
SIMRST
SIMCLK
SCL
SDA
SW8
SW1
BUZZER
LED
RI
DCD
SW9
DTR
CTS
RTS
RD (DFMS)
VRTC
RD3 (RX3)
TD3 (TX3)
SW11
TD (DTMS)
RD2 (CFMS)
TD2 (CTMS)
PCMDLD
PCMULD
PCMIN
PCMOUT
PCMCLK
SW7
The links shown
on J11 must be
in place to
access audio
on J8, J9 or CP1
SW6
SW3
47
49
48
50
59
60
PCMSYN
MICN
MICP
BEARN
BEARP
SERVICE
AFMS
ATMS
SW10
SW5
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All switches are mounted on the front panel of the developer’s box.
Switch
Description
Operation
Vcc
Toggle switch
Switches power from external power supply to
module. Has three positions; NC, OFF and ON.
Switch to ON to connect power to the module
ON/OFF
Push button
switch
Switches module on and off. To power up the
module, push button for at least 2 seconds,
until the yellow VIO LED is on. Repeat the
process to turn the module off
DCIO
Toggle switch
Maintain in OFF position to prevent damage to
the module. Included only for backwards
compatibility
Connector
Description
Connections
UART1
(EDB)
9-way
D socket
(accessible
on the rear
panel)
Full 9-pin RS232 communication port. Used
during run-time to communicate with the
module (AT-commands, data transmission,
etc.)
DCD
RD
RTS
TD
CTS
DTR
RI
UART2
(ACB)
9-way
D socket
(accessible
on the rear
panel)
3 line RS232 communications port
(+SERVICE). Used during service and
maintenance operations. Also used to
download new software to the module
RD2
SERVICE 7
TD2
UART3
9-way
D socket
(accessible
on the rear
panel)
3 line serial port. RS232 levels
RD3
TD3
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GM47/GM48 INTEGRATOR’S MANUAL
Connector
Description
Connections
Handset
RJ11 socket
Connector for a standard telephone
handset. As PCM paths are open inside the
module, a default short circuit is made
between PCMDLD-PCMIN and PCMULDPCMOUT signals on test connector J11 to
enable analogue audio in downlink and
uplink directions. Jumpers are in place
between pins 48 & 50 and between pins 47
& 49
Pin #
Signal
MICN
BEARN
BEARP
MICP
1234
PCM
8 pin mini-DIN
connector
Carries PCM signals
Pin #
Signal
VIO (2.75V d.c. output)
PCMULD
PCMDLD
9 8
PCMCLK
PCMSYNC
DGND
PCMIN
PCMOUT
DGND
J4
SYSTEM
connector
Allows direct connection of the module to
the development board (see Figure 2.3,
page 31)
J5
SIM card test
connector
Connector to gain access to the SIM card
signals, which are connected in parallel with
U10
Pin #
Signal
SIMVCC
SIMRST
SIMCLK
SIMDAT
SIMPRESENCE
SIMGND
SIMGND
U10
SIM Holder
Connector for SIM card. Signals are also
present at test connector J5, described
above
EAR
3.5mm 2-pole
jack socket
Audio output (unbalanced) or Audio From
Mobile Station (AFMS). Make sure jumpers
are in place between pins 48 & 50 and
between pins 47 & 49
ground signal
MIC
3.5mm 2-pole
jack socket
Audio input (unbalanced) or Audio To
Mobile Station (ATMS). Signal source must
be AC-coupled as a bias voltage for
electret microphones is provided
(2.0 - 2.5V d.c.). Make sure Jumpers are in
place between pins 48 & 50 and between
pins 47 & 49
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USING THE DEVELOPER’S KIT
Connector
Description
Connections
J10
SYSTEM
connector
For optional flat cable connection between
the module and the development board
(see Figure 2.3, page 31)
J11
TEST
connector
60 pin, 2.54mm pitch, dual row pin header
that carries all signals present at the system
connector of the module. Used for easy
testing of the signals (see Figure 2.4,
page 36)
J12
Application
connector
For flat cable connection between a host
application and the module. Most of the
signals pass through jumpers that allow the
developer to select whether a specific
signal is routed to/from the development
board or to/from the host application. If no
application is connected to J12, these
jumpers (SW1, SW3, SW5, SW6, SW7, SW8,
SW9, SW10 & SW11) serve as on/off switches
for the module signals (see Figure 2.3,
page 31)
12v
2.1mm DC
Power Socket
Allows connection of an
external power supply.
Between 10V and 15V d.c. at
6 watts is required
RF
SMA panel
socket
Connect the supplied antenna
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2.4 System Connector Pin Assignments
Refer to the table below when monitoring signals on, or connecting to,
J10, J11 or J12. The table shows the system-connector pin assignments
for the GM47 module.
J10, J11 & J12 pin
numbering
viewed from the
front of the
developer’s box
59
60
VCC
DGND
VCC
DGND
VCC
DGND
VCC
DGND
VCC
DGND
10
11
VCC
DGND
12
13
Reserved for future use
ON/OFF
14
15
SIMVCC
SIMPRESENCE
16
17
SIMRST
SIMDAT
18
19
SIMCLK
DAC
20
21
IO1
IO2
22
23
IO3
IO4
24
25
VRTC
ADC1
26
27
ADC2
ADC3
28
29
SDA
SCL
30
31
BUZZER
OUT5
32
33
LED
VIO
34
35
TX_ON
RI
36
37
DTR
DCD
38
39
RTS
CTS
40
41
TD (DTMS)
RD (DFMS)
42
43
TD3 (TX3)
RD3 (RX3)
44
45
TD2 (CTMS)
RD2 (CFMS)
46
47
PCMULD
PCMDLD
48
49
PCMOUT
PCMIN
50
51
PCMSYNC
PCMCLK
52
53
MICP
MICN
54
55
BEARP
BEARN
56
57
AFMS
SERVICE
58
59
ATMS
AGND
60
Figure 2.4 System connector pin assignments
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Part 3: Integrating the
Module
Product Photo/Illustration
1. Mechanical Description
1.1 Interface Description
The pictures below show the mechanical design of the GM47 along
with the positions of the different connectors and mounting holes. The
GM47 is protected with AISI 304 stainless steel covers that meet the
environmental and EMC requirements.
Mounting hole/ground connection
System connector
Antenna connector
Figure 1.1 GM47 viewed from below
Figure 1.2 GM47, viewed from above
Please note the following:
• Mounting holes positioned at the corners make it possible to
securely bolt the module into your application.
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GM47/GM48 INTEGRATOR’S MANUAL
• Keypad, display, microphone, speaker and battery are not part of the
module.
• The SIM card is mounted in your application, external to the
module.
• The System Connector is a 60-pin, standard 0.05in (1.27mm) pitch
type. The pins and their electrical characteristics are described in
“2. System Connector Interface”, page 41.
• Information about the Antenna Connector is found in
“3. Antenna Connector”, page 65.
1.2 Physical Dimensions
2.20 (4x)
2.86
4.78
3.80
2.05
7.15 2.90
4.60
3.00
2.80
50.00
33.00
30.20
2.30
9.00
46.40
1.80
Figure 1.3 Dimensions of the GM47
Measurements are given in millimetres. See also “Technical Data”,
page 73.
40
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2. System Connector Interface
2.1 Overview
Electrical connections to the module (except the antenna), are made
through the System Connector Interface. The system connector is a
60-pin, standard 0.05in (1.27mm) pitch device.
The system connector allows both board-to-board and board-to-cable
connections to be made. The table below shows two possible mating
connectors for use in your applications. Use the board-board connector
to connect the module directly to a PCB, and the board-cable connector
to connect the module via a cable.
Part Number
Description
9462-9101-606
Female, board-board connector (Speed Tech)
TBD
Female, board-cable connector
Figure 2.1 below shows the numbering of the connector pins.
A ground connection is provided at the mounting hole next to the RF
connector on the module as shown below. Connect this ground point to
the DGND pins of the module by the shortest, low-impedance path
possible. The purpose of this connection is to allow any ESD picked up
by the antenna to bypass the module’s internal ground path.
Ground
connection
Pin 59
Pin 1
Pin 60
Pin 2
Figure 2.1 GM47, viewed from underneath
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The following table gives the pin assignments for the system connector
interface and a short description for each signal.
Under the heading “Dir” in the table, module input and output signals
are indicated by the letters I and O respectively.
Note!
Pin
Signal Name
Dir
Signal Type
Description
VCC
Supply
Power supply
DGND
Digital ground
VCC
Supply
Power supply
DGND
Digital ground
VCC
Supply
Power supply
DGND
Digital ground
VCC
Supply
Power supply
DGND
Digital ground
VCC
Supply
Power supply
10
DGND
Digital ground
11
VCC
Supply
Power supply
12
DGND
Digital ground
13
Reserved for
future use
14
ON/OFF
Internal pull
up, open drain
Turns the module on and off.
Former WAKE_B
15
SIMVCC
Digital 3V/5V
SIM card power supply. Power output
from module for SIM Card
16
SIMPRESENCE
Internal pull
up, open drain
SIM Presence
A “1” indicates that the SIM is missing; a
“0” that it is inserted
17
SIMRST
Digital 3V/5V
SIM card reset
18
SIMDATA
I/O
Digital 3V/5V
SIM card data
19
SIMCLK
Digital 3V/5V
SIM card clock
20
DAC
Analogue
Digital to analogue converter
21
IO1
Digital 2.75
General purpose input/output 1
22
IO2
Digital 2.75
General purpose input/output 2
23
IO3
Digital 2.75
General purpose input/output 3
24
IO4
Digital 2.75
General purpose input/output 4
25
VRTC
Supply 1.8V
Supply for real time clock
26
ADC1
Analogue
Analogue to digital converter 1
27
ADC2
Analogue
Analogue to digital converter 2
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Pin
Signal Name
Dir
Signal Type
Description
28
ADC3
Analogue
Analogue to digital converter 3
29
SDA
I/O
2.75, internal
pull up
I 2 C data
30
SCL
2.75, internal
pull up
I 2 C clock
31
BUZZER
Digital 2.75
Buzzer output from module
32
OUT5
Digital 2.75
Programmable output 5
33
LED
Digital 2.75
Flashing LED
34
VIO
Power Out
2.75V
Module power indication. VIO is a
2.75V at 75mA output supply that can
be used to power external circuitry that
interfaces to the GM47
35
TX_ON
Digital 2.75
This output indicates when the GSM
module is going to transmit the burst
36
RI
Digital 2.75
Ring Indicator (UART1)
37
DTR
Digital 2.75
Data Terminal Ready (UART1)
38
DCD
Digital 2.75
Data Carrier Detect (UART1)
39
RTS
Digital 2.75
Request To Send (UART1)
40
CTS
Digital 2.75
Clear To Send (UART1)
41
TD
Digital 2.75
Transmitted Data (UART1).
Data from DTE (host) to DCE (module).
Former DTMS
42
RD
Digital 2.75
Received Data (UART1).
Data from DCE (module) to DTE (host).
Formerly DFMS
43
TD3
Digital 2.75
UART3 transmission
44
RD3
Digital 2.75
UART3 reception
45
TD2
Digital 2.75
UART2 transmission. Used for flashing
the memory. Former CTMS
46
RD2
Digital 2.75
UART2 Reception. Used for flashing the
memory. Former CFMS
47
PCMULD
Digital 2.75
DSP PCM digital audio input
48
PCMDLD
Digital 2.75
DSP PCM digital audio output
49
PCMOUT
Digital 2.75
Codec PCM digital audio output
50
PCMIN
Digital 2.75
Codec PCM digital audio input
51
PCMSYNC
Digital 2.75
DSP PCM frame sync
52
PCMCLK
Digital 2.75
DSP PCM clock output
53
MICP
Analogue
Microphone Input positive
54
MICN
Analogue
Microphone Input negative
55
BEARP
Analogue
Speaker output positive
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Pin
Signal Name
Dir
Signal Type
Description
56
BEARN
Analogue
Speaker output negative
57
AFMS
Analogue
Audio output from module
58
SERVICE
2.7V
Flash programming voltage for the MS.
Enable logger information if not
flashing. Formerly VPPFLASH
59
ATMS
Analogue
Audio input to module
60
AGND
Analogue ground
2.2 General Electrical and Logical Characteristics
Many of the signals, as indicated in the table above, are high-speed
CMOS logic inputs or outputs powered from a 2.75V±5% internal
voltage regulator, and are defined as Digital 2.75V. Whenever a signal
is defined as Digital 2.75V, the following electrical characteristics
apply.
Parameter
Min.
Max.
Units
High Level Output Voltage (VOH), Io = –2mA
2.2
2.75
Low Level Output Voltage (VOL), Io = 2mA
0.6
High Level Input Voltage (VIH)
1.93
2.75
Low Level Input voltage (VIL)
0.8
2.2.1 General Protection Requirements
• All 2.75V digital inputs will continuously withstand and suffer no
damage in the power-on or power-off condition when subjected to
any voltage from -0.5V to 3.47V (3.3V+5%).
• All 2.75V digital outputs will continuously withstand a short circuit
to any other voltage within the range 0V to 3V.
• All analogue outputs will continuously withstand a short circuit to
any voltage within the range 0V to 3V.
• The SIM output signals and the SIMVCC supply will continuously
withstand a short circuit to any voltage within the range 0V to 5.8V.
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2.3 Grounds
Pin
Signal
Description
2, 4, 6, 8, 10, 12
DGND
Digital ground
60
AGND
Analogue ground
There are two ground connections in the GM47, AGND (analogue
ground) and DGND (digital ground). Pin assignments are shown in the
table above.
Note!
AGND and DGND are connected at a star point inside the module. They
must not be joined together in your application.
2.3.1 Analogue Ground - AGND
AGND is the return signal, or analogue audio reference, for ATMS
(Audio To Mobile Station) and AFMS (Audio From Mobile Station).
Parameter
Limit
Imax
≅12.5mA
2.3.2 Digital Ground - DGND
DGND is the reference or return signal for all system interface digital
signals and is also the d.c. return for SERVICE and the power supply,
VCC. Connect all DGND pins together in your application in order to
carry the current drawn by the module.
2.4 VCC - Regulated Power Supply Input
Pins
Signal
Description
1, 3, 5, 7, 9, 11
VCC
regulated power supply input
Power is supplied to the module VCC pins, from an external source.
Connect all VCC pins together in your application in order to carry the
current drawn by the module.
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The electrical characteristics for VCC are shown in the table below.
Parameter
Vcc supply voltage
Maximum allowable voltage
drop
Mode
Limit
Nominal
3.6V
Tolerance
including ripple a
3.4V - 4.0V
Over-voltage limit
5.5V
Maximum ripple
TBD
Burst transmission
200mV
<600mA (average)
Current drawn, at full TX
power
<2A (peak)
a. Measured at system connector pins.
Note!
GM47 has no internal capacitance to supply the large current peaks
during GSM burst transmission. We recommend you follow these
general guidelines:
• Fit a low ESR electrolytic capacitor close to the module: minimum
value 1,000 µF, <100mΩ ESR.
• Make sure power supply to module line resistance is <200mΩ.
2.5 ON/OFF and External Power Signal
Pin
Signal
Dir
Description
14
ON/OFF
Pulse signal to turn the module on or off
34
VIO
2.75V supplied by the module
2.5.1 Switching the module ON and OFF
The module is turned on and off by momentarily grounding the
ON/OFF pin. This input should be driven by an open collector, or other
device which will not tie the input high, to allow the internal alarm clock
function to operate. See the table below for exact characteristics. In the
OFF state the current consumption of the module is less than 100µA.
The ON/OFF signal is a digital input with the following characteristics:
Parameter
Min.
Voltage HIGH level (FALSE)
Voltage LOW level (TRUE)
Pull-up resistance (internal)
Typ.
Max.
Units
VCC
0.3 x VCC
39
kΩ
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The following timing diagram illustrates both power-up and powerdown processes.
Module on
Module off
t1
t2
ON/OFF
tpwr
VIO
Module
powered
Module power-up
Module power-down
Figure 2.2 ON/OFF timing and VIO performance
Times are defined as follows:
Time
Description
Min.
t1
Turn-on pulse time
≥2
Turn-off pulse time
≥1
Hardware-reset pulse timea
>10
Time for VIO and internal voltages
to be established
100
t2
tpwr
Typ.
Max.
Units
200
ms
a. Active only when a full system reset is required.
2.5.2 VIO - 2.75V Supply
VIO provides an output voltage derived from an internal 2.75V
regulator. Its electrical characteristics are shown below.
Parameter
Min.
Typ.
Max.
Units
Output Voltage (Iload = 50mA)
2.70
2.75
2.85
75
mA
Load current
You can use this output for the following:
• to indicate that the module is alive;
• to power interface circuits, external to the module.
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2.6 Analogue Audio
Pin
Signal
Dir
Description
57
AFMS
Audio from mobile station
59
ATMS
Audio to mobile station
60
AGND
Ground (return) for analogue audio
ATMS is the audio input, and AFMS is the audio output, of the module.
These signals can be used in Hands-free or Portable Hands-free mode.
Hands-free Mode
This mode is used for audio accessories, such as car kits and hands-free
equipment.
Portable Hands-free Mode
This is the default mode. It activates a different amplification factor in
the ME, and activates a 2V microphone bias level for ATMS. The bias
level is adjustable using AT*E2EAMS.
2.6.1 Audio To Mobile Station - ATMS
ATMS is the analogue audio input to the module. Internally, the signal
is sent to the CODEC (COder/DECoder), where it is converted to digital
audio in PCM (Pulse Code Modulation) format. The encoded audio is
sent to PCMOUT via the internal PCM bus.
ATMS provides a DC bias when it is used as the microphone input in
Portable Hands-free applications. All other sources must be
a.c.-coupled to avoid attenuation of low frequencies, and to prevent
incorrect biasing or damage to the ATMS input. Use a capacitor greater
than the value shown in the table below.
The ATMS input is a passive network followed by the transmit part of
the CODEC.
Parameter
Limit
Application driving impedance (0.3 - 3.5kHz)
≤300Ω
AC coupling capacitance a
≥1µF
Module input impedance (0.3 - 3.5kHz)
>50kΩ
Low frequency cut-off (-3dB)
300Hz ± 50Hz
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Parameter
Limit
High frequency cut-off (–3dB)
> 3500Hz ± 50Hz
Hands-free mode
0V
Portable hands-free mode
2.0V ± 0.1V
Output d.c. bias level
Additional Gain in Portable hands-free mode
28.5dB
a. The a.c.-coupling capacitance must be supplied by your application, unless
a d.c.-coupled microphone is used.
The following tables show the nominal PGA (programming gain
settings). For more information see the relevant AT commands.
Maximum input voltage limit: 245mVrms
Input
Input (mVrms)
TXAGC (dB)
AUX AMP
gain
PCMOUT (dBm0)
ATMS
245
13
Maximum input level at MICI, 61.4mVrms output at
PCMOUT = 3dBm0
Input
Differential
input (mVrms)
TXAGC (dB)
AUX AMP
gain
PCMOUT (dBm0)
MICN
MICP
61.4
25
Output at AFMS for 3dBm0 at PCMIN
Input
dBm0
RXPGA
Volume
control (dB)
AFMS (mVrms)
PCMIN
436
Output at BEARN/BEARP for 3dBm0 at PCMIN
Input
dBm0
RXPGA
Volume
control (dB)
BEAR (mVrms)
PCMIN
388
2.6.2 Audio From Mobile Station - AFMS
AFMS is the analogue audio output from the module and may be used
to drive a speaker or the ear-piece in a portable hands-free accessory.
PCM digital audio signals, entering the module through the PCMIN pin,
are translated to analogue signals by the CODEC. See “2.7 Digital
Audio”, page 52 for further information.
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The table below shows the audio signal levels for AFMS.
Parameter
Limit
Speaker impedance
64 Ω to 1kΩ
Output Capacitance
2.2µF ±10%
Levels (THD <5%)
Drive capability into 5kΩ
(0.3 - 3.5kHz)
>2.4Vp-p
Drive capability into 1.5kΩ
(0.3 - 3.5kHz)
>2.2Vp-p
Drive capability into 150 Ω
(at 1kHz)
>1.3Vp-p
2.6.3 Microphone Signals
Pin
Speaker signals
Dir
Function
53
MICP
Microphone positive input
54
MICN
Microphone negative input
MICP and MICN are balanced differential microphone input pins.
These inputs are compatible with an electret microphone. The
microphone contains an FET buffer with an open drain output, which is
supplied with at least +2V relative to ground by the module as shown
below.
2 - 2.5V
@ 1mA
CODEC
1k
MICP
68nF
68nF
MICN
GM47
1k
AGND
Figure 2.3 Microphone connections to the module
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2.6.4 Speaker Signals
Pin
Speaker signals
Dir
Function
55
BEARP
Speaker positive output
56
BEARN
Speaker negative output
BEARP and BEARN are the speaker output pins. These are
differential-mode outputs. The electrical characteristics are given in the
table below.
Parameter
Limit
Output level (differential)
≥4.0Vpp
Output level (dynamic load = 32 Ω)
≥2.8Vpp
Gain PCMINa to BEARP/BEARN (differential)
–9dB ± 1
Distortion at 1kHz and maximum output level
≤5%
Offset, BEARP to BEARN
±30mV
Ear-piece mute-switch attenuation
≥40dB
a. See PCMIN signal in “2.7 Digital Audio”, page 52
The following table shows the ear piece impedances that can be
connected to BEARP and BEARN.
Ear piece model
Impedance
Tolerance
Dynamic ear piece
[32Ω + 800µH] // 100pF
±20%
Dynamic ear piece
[150Ω + 800µH] // 100pF
±20%
Piezo ear piece
1kΩ + 60nF
±20%
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2.7 Digital Audio
Pin
Signal
Dir
Function
52
PCMCLK
PCM clock
51
PCMSYNC
PCM frame sync
47
PCMULD
PCM audio input to DSP
48
PCMDLD
PCM audio output from DSP
50
PCMIN
PCM audio input to Codec
49
PCMOUT
PCM audio output to Codec
Digital PCM audio signals allow the connection of a digital audio
source/receiver, bypassing the analogue audio CODEC processing
functions performed within the module.
GM47
PCMSYNC & PCMCLK
DSP
PCMDLD
PCMIN
PCMULD
PCMOUT
CODEC
System connector
Link for internal
digital-audio processing
Analogue
audio
signals
Figure 2.4 Pin connections to digital audio
Note!
When no external audio processing is performed, the following pins
must be connected together:
• PCMDLD to PCMIN;
• PCMULD to PCMOUT.
Electrical characteristics
Digital 2.75V CMOS input/output electrical characteristics apply.
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PCM interface format
The PCM format (for PCMULD and PCMDLD) conforms to the linear
PCM data I/O format of the industry standard DSP from Texas
Instruments. It is the same format as the one used between the CODEC
and the DSP in the module.
PCMCLK (bit clock) and PCMSYNC (frame synchronisation) are both
generated by the DSP (Digital Signal Processor) in the module.
The data words in PCMULD and PCMDLD are aligned so that the MSB
in each word occurs on the same clock edge.
2.8 Serial Data Interfaces
Pin
Signal
Dir
Description
RS232
CCITT Nº
41
TD
Serial data to module (UART1)
103
42
RD
Serial data from module (UART1)
104
39
RTS
Request To Send (UART1)
105
40
CTS
Clear To Send (UART1)
106
37
DTR
Data Terminal Ready (UART1)
108.2
38
DCD
Data Carrier Detect (UART1)
109
36
RI
Ring Indicator (UART1)
125
45
TD2
UART2 Data Transmission
46
RD2
UART2 Data Reception
43
TD3
UART3 Data Transmission
44
RD3
UART3 Data Reception
The serial channels, consisting of three UARTs, are asynchronous
communication links to the application or accessory units. UART1 has
RS-232 functionality. UART2 and UART3 behave as general-purpose
serial data links. In addition they are used for accessories and GPS
respectively.
Digital 2.75V CMOS input/output electrical characteristics apply.
The standard character format consists of 1 start bit, 8 bit data, no parity
and 1 stop bit. In all, there are 10 bits per character.
2.8.1 UART1 (RS232) - RD, TD, RTS, CTS, DTR, DCD and RI
UART1 signals conform to a 9 pin RS232 (V.24) serial port, except for
the DSR (CCITT No 107) signal. The DSR signal has been removed as
it is usually connected to DTR in most systems.
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Note!
UART1 signal levels do not match standard RS232 (V.28) levels. The
relationship between the levels is shown in the table below.
RS232 level
RD, TD
RTS, CTS, DTR, DCD, RI
CMOS level
<– 3V
OFF
>1.93V
>+3V
ON
<0.80V
Conversion between the module CMOS levels and RS232 levels can be
achieved using a standard interface IC, such as the Maxim Integrated
Products MAX3237.
2.8.2 Serial Data Signals - RD, TD
The default baud rate is 9.6kbits/s, however higher bit rates of up to
460 kbits/s are supported, set by an AT command. UART1 starts at a
rate of 9.6kbits/s in standard AT command mode or binary mode (first
received data, AT or binary, will determine the operation mode). The
module also supports GSM 07.10 multiplexing protocol and starts when
the appropriate command is sent.
Serial Data From Module (RD)
RD is an output signal that the module uses to send data via UART1 to
the application.
Parameter
Limit
Application load resistance
≥100kΩ
Application load capacitance
<500pF
Serial Data To Module (TD)
TD is an input signal, used by the application to send data via UART1
to the module.
Parameter
Limit
Application driving impedance
<100 Ω
Input capacitance
1nF
Input resistance (pull-up)
100kΩ to VCC
2.8.3 Control Signals - RTS, CTS, DTR, DCD, RI
UART1 control signals are active low and need a standard interface IC,
such as the MAX3237, to generate standard RS232 levels.
UART1 converted signals, together with DGND, RD and TD form a
9-pin RS232 data port.
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RTS and CTS are capable of transmitting at 1/10th of the data
transmission speed for data rates up to 460kbit/s (byte-oriented flow
control mechanism).
Switching times for RTS and CTS
The table below shows the switching times.
Parameter
Limit
Time from Low to High level
<2µs
Time from High to Low level
<2µs
Request to Send (RTS)
Used to condition the DCE for data transmission. The default level is
high by internal pull up.
The exact behaviour of RTS is defined by an AT command. Software
of hardware control can be selected. Hardware flow is the default
control.
The application must pull RTS low to communicate with the module.
The module will respond by asserting CTS low, indicating it is ready for
communication.
Parameter
Limit
Application driving impedance
<100Ω
Input capacitance
<2nF
Input resistance (pull-up)
100kΩ to VCC
Clear To Send (CTS)
CTS indicates that the DCE is ready to transmit data. The default level
is high. You can define the exact behaviour of CTS through an AT
command, and can select software or hardware flow control.
The table below shows the load characteristics for this signal.
Parameter
Limit
Application load capacitance
<500pF
Application load resistance
≥1MΩ
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Data Terminal Ready (DTR)
DTR indicates that the DTE is ready to transmit and receive data. It also
acts as a hardware ‘hang-up’, terminating calls when switched high.
The signal is active low. You can define the exact behaviour of DTR
with an AT command.
Data Carrier Detect (DCD)
DCD indicates that the DCE is receiving a valid carrier (data signal)
when low. You can define the exact behaviour of DCD with an AT
command.
Ring Indicator (RI)
RI indicates that a ringing signal is being received by the DCE when
low. You can define the exact behaviour or RI with an AT command.
Data Set Ready (DSR)
No DSR signal is provided. Use any DGND connection for this
functionality.
2.8.4 UART2 - TD2, RD2
UART 2 consists of a full duplex serial communication port with
transmission and reception lines.
This communication port works in a mode called Operation and
Maintenance.
Operation and Maintenance mode works in combination with the
SERVICE signal. Two events are possible if the SERVICE signal is
active when the module is turned on. These are:
• the module is reprogrammed if UART2 is connected to a computer
running Sony Ericsson update software;
• the module enters logging mode and sends data to UART2 if no
reprogramming information is received.
Timing and electrical signals characteristics are the same as for
UART1, TD and RD.
Transmitted Data 2 (TD2)
TD2 is used by the application to send data to the module via UART2.
It has the same electrical characteristics as TD.
Received Data 2 (RD2)
RD2 is used to send data to the application via UART2. It has the same
electrical characteristics as RD.
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2.8.5 UART3 - TD3, RD3
UART3 is a full duplex serial communication port with transmission
and reception lines. It has the same timing and electrical signal
characteristics as UART1, TD and RD.
Transmitted Data 3 (TD3)
TD3 is used by your application to send data to the module via UART3.
Received Data 3 (RD3)
RD is used to send data to your application via UART3.
2.9 SIM Card Related Signals
Pin
Signal
Dir
Description
15
SIMVCC
SIM card power supply
16
SIMPRESENCE
SIM card presence
17
SIMRST
SIM card reset
19
SIMCLK
SIM card clock
18
SIMDATA
I/O
SIM card data
These connections allow you to communicate with the SIM card holder
in you application.
Note!
The distance between the SIM card holder and the module can be up to
25cm.
This SIM interface allows the use of 3V and 5V SIM cards. By default
it works on 3V levels but will automatically switch to 5 V, if a 5 V SIM
card is fitted.
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SIM voltage levels, as shown in the following table, are dependent on
the type of SIM card detected by the module.
Signal
Parameter
SIMVCC
SIM supply voltage
SIMDAT
SIMDAT
SIMDAT
SIMDAT
High Level Input
voltage (VIH)
Low Level Input
voltage (VIL)
High Level Output
voltage (VOH)
Low Level Output
voltage (VOL)
SIMCLK
SIMRST
High Level Output
voltage (VOH)
SIMCLK
SIMRST
Low Level Output
voltage (VOL)
Mode
Min.
Typ.
Max.
Unit
3V
2.7
3.0
3.3
5V
4.5
5.0
5.5
3V
2.1
3.0
5V
3.5
5.0
3V
0.9
5V
1.5
3V
2.7
3.0
5V
4.7
5.0
3V
0.2
5V
0.2
3V
2.4
3.0
5V
4.4
5.0
3V
0.35
5V
0.3
2.9.1 SIM Detection - SIMPRESENCE
SIMPRESENCE is used to determine whether a SIM card has been
inserted into or removed from the SIM card holder. You should
normally wire it to the “card inserted switch” of the SIM card holder,
but different implementations are possible.
When left open, an internal pull-up resistor maintains the signal high
and means “SIM card missing” to the module. When pulled low the
module assumes a SIM card is inserted.
SIMPRESENCE is a Digital 2.75 CMOS input with the following
electrical characteristics.
Parameter
Min.
Pull-up resistance (at 2.75 V)
100
Low Level Input voltage (SIM inserted)
High Level Input voltage (SIM missing)
>1.93
Typ.
Max.
Units
kΩ
0.80
2.75
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2.10 Service/Programming
Pin
Signal
Dir
Description
58
SERVICE
Flash programming voltage
When the SERVICE input signal is active the module will:
• be reprogrammed if data is received through UART2 from a
computer running Sony Ericsson reprogramming software;
• or it will output logging data on UART2.
The electrical characteristics are given below. The signal reference is
DGND.
SERVICE Voltage (V)
Mode
Drive Capacity
Min.
Typ.
Normal Operation
Service/enable
programming
1.9
2.75
Max.
0.8
13.6
>1mA
2.11 Buzzer
Pin
Signal
Dir
Description
31
BUZZER
Buzzer output from module
Connecting the BUZZER signal to an inverting transistor-buffer
followed by a piezoelectric transducer enables the module to play preprogrammed melodies or sounds.
2.12 LED
Pin
Signal
Dir
Description
33
LED
LED Output from module
The LED states shown below, are hard coded.
LED indication
Operational status
No indication
No power or in the OFF state
Green, steady
Power on, not connected to a network
Green, blinking
Power on, connected to a network
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The following circuit should be used to connect an LED.
VIO
220
GM47
LED
2k2
BC817
10k
DGND
Figure 2.5 Electrical connections for the LED
2.13 General Purpose Digital I/O Ports
Pin
I/O port
signal
Default
signal
Description
21
IO1
Programmable Input/Output 1
22
IO2
Programmable Input/Output 2
23
IO3
Programmable Input/Output 3
24
IO4
Programmable Input/Output 4
37
IN5
DTR
Programmable input 5/Data Terminal Ready
32
OUT5
Programmable output 5
36
OUT6
RI
Programmable Output 6/Data Carrier
Detect
38
OUT7
DCD
Programmable Output 7/Ring indicator
Signals which have an entry in the Default Signal column in the above
table are multiplexed. Their operation depends on AT commands.
The following table gives you the input impedance. These values only
apply when the signals are configured as input signals.
Parameter
Min.
Typ.
Max.
Units
Input impedance (IO1 - IO4) (pull-up)
20
39
100
kΩ
Input impedance (IN5)
100
kΩ
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2.14 General Purpose Analogue I/O Ports
Pin
Signal
Dir
Description
20
DAC
Digital to analogue conversion output
26
ADC1
Analogue to digital conversion input 1
27
ADC2
Analogue to digital conversion input 2
28
ADC3
Analogue to digital conversion input 3
The module is able to convert digital to analogue signals and vice versa.
2.14.1 Digital to Analogue Converter - DAC
The DAC is an 8-bit converter. Conversion takes place when an AT
command is sent to the module. The module sends the resulting
analogue value to the DAC pin.
DAC output electrical characteristics are given in the following table.
Parameter
Limit
Units
Resolution
Bits
Output voltage for code = 0
(2.75 a x 0.05) ± 0.05
Output voltage for code = 255
(2.75 a x 0.95) ± 0.05
Nominal step size
(2.75 a x 0.9)/256
mV
Absolute errorb
≤ ± 0.5
mV
Output wide-band noise and clock
feed-through 0- 1.1MHz
≤0.5
mVrms
Power-supply rejection ratio 50Hz - 10kHz
≥40
dB
≤2 (Load A)c
ms
≤50 (Load B)c
ms
Output buffer impedance when disabled
≥50
kΩ
Output current source or sink
≥1
mA
Current consumption (active)
≤1.0
mA
Conversion rate ± 0.5LSB
a. Tolerance on this internal voltage is ±5 %
b. Referred to the ideal conversion characteristic.
c. See Figure 2.6, page 62
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DAC
100 - 200pF
100k
Load A
1k
Load B
DGND
DAC
10nF
1nF
DGND
Figure 2.6 DAC loads
2.14.2 Analogue to Digital Converters 1, 2 and 3 - ADCx
The ADC is an 8-bit converter. An analogue value applied to any of the
ADC pins is converted and stored in a register inside the module. When
the appropriate AT command is received by the module, the digital
value stored in the register is read.
ADC electrical characteristics are shown in the table below.
Parameter
Min.
Max.
Units
Resolution
Bits
Input voltage for 0000 0000 word
0.01 x 2.75a
Input voltage for 1111 1111 word
0.99 x 2.75a
2.75a
Differential Non-Linearity (DNL)
±0.75
LSB
Overall Non-Linearity (INL)
±0.60
LSB
Absolute accuracy
±1.5
LSB
Input impedance
MΩ
Average supply current
(continuous conversion)
mA
External source impedance
50
kΩ
a. Tolerance on this internal voltage is ±5 %
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2.15 External I 2C Serial Control Bus
Pin
Signal
Dir
Description
29
SDA
I/O
I 2 C serial data
30
SCL
I 2 C serial clock
The external I 2 C bus consists of two signals, SDA and SCL. This bus
is isolated from the module’s internal I 2 C bus to ensure proper
operation of the module, even if the external I 2 C bus is damaged.
Transmit
operation
The electrical characteristics are shown below.
Parameter
Min.
Frequency I 2 C CLK
81.25
High or low I 2 C CLK
1.2
Delay time after falling edge of I 2 C
CLK
308
Hold time after falling edge of I 2 C
CLK
Typ.
Units
400
kHz
µs
3081230
ns
ns
400
Frequency I 2 C CLK
Receive
operation
Max.
kHz
High or low I 2 C CLK
1.2
µs
Delay time after falling edge of I 2 C
CLK
100
ns
Hold time after falling edge of I 2 C
CLK
ns
2.16 TX_ON - Burst Transmission
Pin
Signal
Dir
Description
35
TX_ON
GSM module to transmit
Burst transmission is the time when a GSM transceiver unit is
transmitting RF signals. TX_ON indicates the module is going into
transmission mode.
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2.17 Real Time Clock
Pin
Signal
Dir
Description
25
VRTC
Voltage for the Real Time Clock
The Real Time Clock provides the main microprocessor with a time-ofday calendar and alarm, and a one-hundred-year calendar.
The Real Time Clock operates in two modes when connected to a
separate power supply:
• RTC normal mode: the module is in ON or OFF mode and it is
supplied with power (VCC is applied).
• RTC back-up mode: VCC is disconnected and the RTC is
maintained by a separate backup power supply connected to the
VRTC input (see Figure 2.7 below).
Backup power is provided by a capacitor, golden-capacitor or battery in
your application and must be connected to the VRTC pin. During RTC
normal operation, the back up source will be charged.
In back-up mode, the back-up source must provide enough power for
RTC operation. Refer to the table for the amount of current required.
The following table shows both voltage characteristics for both modes.
Parameter
Min.
Typ.
Max.
Units
Supply Voltage RTC (normal mode charging the capacitor)
1.6
1.8
2.0
Supply Voltage RTC (back-up mode Capacitor provides the current)
1.0
1.8
2.0
5.0
10.0
µA
Current drawn
If the voltage drops below 1.0 V in back-up mode, the RTC will stop
working. The following diagram shows the RTC connections.
VRTC
Backup
supply
GM47
DGND
Figure 2.7 RTC connections
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3. ANTENNA CONNECTOR
3. Antenna Connector
The module’s antenna connector allows transmission of the radio
frequency (RF) signals from the module to an external customersupplied antenna. The connector is a micro-miniature coaxial MMCX
surface mounted component. A number of suitable MMCX type,
mating plugs are available from the following manufacturers;
• Amphenol;
• Suhner;
• IMS Connector Systems.
The electrical characteristics of the antenna interface are shown below.
Parameter
Limit
Nominal impedance
50Ω (better than 2:1)
Description
2 Watt peak (Class 4)
Extended GSM 900
1 Watt peak (Class 1)
GSM 1800
Better than –104dBm
Extended GSM 900
Better than –102dBm
GSM 1800
Output Power
Static Sensitivity
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4. HINTS FOR INTEGRATING THE MODULE
4. Hints for Integrating the Module
This chapter gives you advice and helpful hints on how to integrate the
GM47 into your application from a hardware perspective.
Please read and consider the information under the following headings
before starting your integration work:
• Safety advice and precautions.
• Installation of the module.
• Antenna.
4.1 Safety Advice and Precautions
4.1.1 General
• Always ensure that use of the module is permitted. The module may
present a hazard if used in proximity to personal medical electronic
devices. As a rule, the module must not be used in hospitals, airports
or planes.
• You are responsible for observing your country’s safety standards,
and where applicable the relevant wiring rules.
• Never use the module at a gas station, refuelling point, blasting area
or in any other environment where explosives may be present.
• Operating the module close to other electronic devices, such as
antennas, television sets, and radios may cause electromagnetic
interference.
• Never try to dismantle the module yourself. There are no
components inside the module that can be serviced by the user. If
you attempt to dismantle the module, you may invalidate the
warranty.
• To protect the power supply cables and meet the fire safety
requirements, it is recommended that the electrical circuits are
supplied with a power regulator. The power regulator should be
placed as close to the terminals of the power supply as possible.
• Do not connect any incompatible component or product to the
GM47. Note, Sony Ericsson does not warrant against defects, nonconformities or deviations caused thereby.
4.1.2 SIM Card
• Before handling the SIM card in your application, ensure that you
are not charged with static electricity. Use proper precautions to
avoid electrostatic discharges. The module must be switched off
before the SIM card is installed in your application.
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• When the SIM card hatch is opened, the SIM card connectors lie
exposed under the SIM card holder. CAUTION: Do not touch these
connectors! If you do, you may release an electrical discharge that
could damage the module or the SIM card.
• When designing your application, the SIM card’s accessibility
should be taken into account. We always recommend that you have
the SIM card protected by a PIN code. This will ensure that the SIM
card cannot be used by an unauthorized person.
4.1.3 Antenna
• If the antenna is to be mounted outside, consider the risk of
lightning. Follow the instructions provided by the antenna
manufacturer.
• Never connect more than one module to a single antenna. The
module can be damaged by radio frequency energy from the
transmitter of another module.
• Like any mobile station, the antenna of the module emits radio
frequency energy. To avoid EMI (electromagnetic interference), you
must determine whether the application itself, or equipment in the
application’s proximity, needs further protection against radio
emission and the disturbances it might cause. Protection is secured
either by shielding the surrounding electronics or by moving the
antenna away from the electronics and the external signals cable.
• The module and antenna may be damaged if either come into contact
with ground potentials other than the one in your application.
Beware, ground potential are not always what they appear to be.
• In the final application, the antenna must be positioned more than
20cm away from human bodies. When this rule cannot be applied,
the application designer is responsible for providing the SAR
measurement test report and declaration.
4.2 Installation of the Module
4.2.1 Where to Install the Module
There are several conditions which need to be taken into consideration
when designing your application as they might affect the module and its
function. They are:
Environmental Conditions
The module must be installed so that the environmental conditions
stated in the Technical Data chapter, such as temperature, humidity and
vibration are satisfied. Additionally, the electrical specifications in the
Technical Data section must not be exceeded.
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Signal Strength
The module has to be placed in a way that ensures sufficient signal
strength. To improve signal strength, the antenna can be moved to
another position. Signal strength may depend on how close the module
is to a radio base station. You must ensure that the location at which you
intend to use the module, is within the network coverage area.
Degradation in signal strength can be the result of a disturbance from
another source, for example an electronic device in the immediate
vicinity. More information about possible communication disturbances
can be found in section 4.3.5, page 72.
When an application is completed, you can verify signal strength by
issuing the AT command AT+CSQ. See “AT+CSQ Signal Strength”,
page 118.
Tip!
Before installing the module, use an ordinary mobile telephone to check
a possible location for it. In determining the location for the module and
antenna, you should consider signal strength as well as cable length
Connection of Components to GM47
The integrator is responsible for the final integrated system. Incorrectly
designed or installed, external components may cause radiation limits to
be exceeded. For instance, improperly made connections or improperly
installed antennas can disturb the network and lead to malfunctions in
the module or equipment.
Network and Subscription
• Before your application is used, you must ensure that your chosen
network provides the necessary telecommunication services.
Contact your service provider to obtain the necessary information.
• If you intend to use SMS in the application, ensure this is included in
your (voice) subscription.
• Consider the choice of the supplementary services described in
section “2.3.2 Short Message Service”, page 18.
4.2.2 How to Install the Module
Power Supply
• Use a high-quality power supply cable with low resistance. This
ensures that the voltages at the connector pins are within the allowed
range, even during the maximum peak current. An electrolytic
capacitor should be placed close to the power supply pins of the
module to supply the peak currents during burst transmission. See
“VCC - Regulated Power Supply Input”, page 45.
• See section “2.2.1 General Protection Requirements”, page 44.
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Grounds
A ground connection is provided at the mounting hole next to the RF
connector on the module (see Figure 2.1, page 41). Connect this ground
point to the DGND pins of the module by the shortest, low-impedance
path possible. The purpose of this connection is to allow any ESD
picked up by the antenna to bypass the module’s internal ground path.
Note!
It is recommended that you use a cable with a maximum resistance of
5 mΩ for the ground connection.
Note!
AGND and DGND are connected at a star point inside the module. They
must not be joined together in your application.
Audio
Use a coupling capacitor in ATMS line if the application does not use
the module’s bias voltage. See also “Figure 2.3 Microphone
connections to the module”, page 50.
Software Upgrade
To upgrade the software, the system connector must be accessible in
your application. The pins SERVICE, TD, RD and the power signals
are used for this purpose. Please contact customer support for more
details.
4.3 Antenna
4.3.1 General
The antenna is the component in your system that maintains the radio
link between the network and the module. Since the antenna transmits
and receives electromagnetic energy, its efficient function will depend
on:
• the type of antenna (for example, circular or directional);
• the placement of the antenna;
• communication disturbances in the vicinity in which the antenna
operates.
In the sections below, issues concerning antenna type, antenna
placement, antenna cable, and possible communication disturbances are
addressed.
In any event, you should contact your local antenna manufacturer for
additional information concerning antenna type, cables, connectors,
antenna placement, and the surrounding area. You should also
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determine whether the antenna needs to be grounded or not. Your local
antenna manufacturer might be able to design a special antenna suitable
for your the application.
4.3.2 Antenna Type
Make sure that you choose the right type of antenna for the module.
Consider the following requirements:
• the antenna must be designed for the dual frequency bands in use:
EGSM/GSM900/1800 for the GM47 and
GSM850/1900 for the GM48;
• the impedance of the antenna and antenna cable must be 50Ω;
• the antenna output-power handling must be a minimum of 2W;
• the VSWR value should be less than 3:1 to avoid damage to the
module.
4.3.3 Antenna Placement
The antenna should be placed away from electronic devices or other
antennas. The recommended minimum distance between adjacent
antennas, operating in a similar radio frequency band, is at least 50cm.
If signal strength is weak, it is useful to face a directional antenna at the
closest radio base station. This can increase the strength of the signal
received by the module.
The module’s peak output power can reach 2W. RF field strength varies
with antenna type and distance. At 10cm from the antenna the field
strength may be up to 70V/m and at 1m it will have reduced to 7V/m.
In general, CE-marked products for residential and commercial areas,
and light industry can withstand a minimum of 3V/m.
4.3.4 The Antenna Cable
Use 50Ω impedance low-loss cable and high-quality 50 Ω impedance
connectors (frequency range up to 2GHz) to avoid RF losses. Ensure
that the antenna cable is as short as possible.
The Voltage Standing-Wave Ratio (VSWR) may depend on the
effectiveness of the antenna, cable and connectors. In addition, if you
use an adapter between the antenna cable and the antenna connector, it
is crucial that the antenna cable is a high-quality, low-loss cable.
Minimize the use of extension cables, connectors and adapters. Each
additional cable, connector or adapter causes a loss of signal power.
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4.3.5 Possible Communication Disturbances
Possible communication disturbances include the following:
• Noise can be caused by electronic devices and radio transmitters.
• Path-loss occurs as the strength of the received signal steadily
decreases in proportion to the distance from the transmitter.
• Shadowing is a form of environmental attenuation of radio signals
caused by hills, buildings, trees or even vehicles. This can be a
particular problem inside buildings, especially if the walls are thick
and reinforced.
• Multi-path fading is a sudden decrease or increase in the signal
strength. This is the result of interference caused when direct and
reflected signals reach the antenna simultaneously. Surfaces such as
buildings, streets, vehicles, etc., can reflect signals.
• Hand-over occurs as you move from one cell to another in the GSM
network. Your mobile application call is transferred from one cell to
the next. Hand-over can briefly interfere with communication and
may cause a delay, or at worst, a disruption.
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5. TECHNICAL DATA
5. Technical Data
Mechanical Specifications
Maximum length
50mm
Maximum width
33mm
Maximum thickness
7.15mm
Weight
18.5g
(excluding connector pins and
top of antenna connector)
Power supply voltage, normal operation
Voltage
3.6V nominal (3.4V - 4.0V)
Ripple
<100mV @ 200kHz; <20mV @ >200kHz
Voltage must always stay within a normal operating range, ripple included
Voice/CSD: <250mA (< 2A peak)
Data (GPRS 4+1); <350mA (<2A peak)
Power consumption
Idle mode: <5mA
Switched off: <100µA
Radio specifications
Frequency range
GM47: EGSM 900MHz and 1800MHz (dual band)
GM48: GSM 850MHz and 1900MHz (dual band)
Maximum RF output
power
GM47: 2W
GM48: 1W
Antenna impedance
50Ω
SIM card
3 V or 5 V
Support of external SIM card
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Environmental specifications
Operating temperature
range
-25°C to +55°C
Storage temperature
range
-40°C to +85°C
Maximum relative
humidity
95% at +40°C
Stationary vibration,
sinusoidal
Displacement: 7.5mm
Acceleration amplitude: 20m/s² and 40m/s²
Frequency range: 2-8Hz, 8-200Hz, 200-500Hz
Stationary vibration,
random
Acceleration spectral density (m²/s²):
0.96, 2.88, 0.96
Frequency range:
5-10Hz, 10-200Hz, 200-500Hz, 60min/axis
Non-stationary vibration,
including shock
Shock response spectrum I, peak acceleration:
3 shocks in each axis and direction;
300m/s², 11ms
Shock response spectrum II, peak acceleration:
3 shocks in each axis and direction;
1000m/s², 6ms
Bump
Acceleration: 250m/s²
Free fall transportation
1.2m
Rolling pitching
transportation
Angle: ±35degrees; period: 8s
Static load
10kPa
Low air pressure/high air
pressure
70kPa/106kPa
Data Storage
SMS storage capacity
40 in ME
In addition, the unit can handle as many
SMS as the SIM can store
Phone book capacity
100
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Part 4: Using AT Commands
Product Photo/Illustration
1. Introduction to AT Commands
1.1 Overview
AT commands, issued from a computer in your application are used to
control and implement the functions of the module.
Using AT commands, the following actions are possible:
• Control of DCE
• GPRS
• Call control
• Supplementary Service
• SIM application tool kit
The GM47 contains a large number of Ericsson-specific commands in
addition to those implemented in accordance with the GSM and ITU-T
recommendations. These commands are provided to enhance the
functions of the module. The Ericsson-specific commands are identified
by the asterisk that precedes the command (see the syntax description
provided below).
1.2 Syntax Description
This section provides a brief description of the syntax used for the
GM47, AT command set. See the ITU-T recommendation V.25ter for
additional information.
1.2.1 Conventions
In this manual, the following conventions are used to explain the AT
commands.

The name of the command that is to be entered.

The parameter values that are defined for a certain
command.

The command line is terminated by the Carriage
Return or Enter key.

Line feed character.
<>
The term enclosed in angle brackets is a syntactical
element. The brackets do not appear in the command
line.
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[]
Square brackets are used to indicate that a certain item
is optional. For example, sub-parameters of a
command or an optional part of a response. The
brackets do not appear in the command line.
Value
The default values of the supported parameters are
indicated by using bold text when presenting the
value.
• Other characters, including ‘?’, ‘=’, parenthesis, etc., appear in
commands and responses as written.
• The final result codes OK, ERROR, +CME ERROR:  and
CMS ERROR: (see sections 1.2.3, AT Response Syntax and
1.3, Error Codes) are not listed under “Possible Responses” for each
AT command.
• OK and ERROR are listed if these are the only possible responses.
1.2.2 AT Command Syntax
The AT standard is a line-oriented command language. Each command
is made up of the following three elements:
• the prefix;
• the body;
• the termination character.
The prefix consists of the letters “AT”, which are derived from the first
two letters of the word attention. The body is made up of the command,
the parameter, and if applicable the associated values.
Commands may be combined in the same command line. Spaces
between the individual bodies are ignored.
Basic Syntax Command
The format of basic syntax commands is as follows:
AT[=][]
Example! ATL=0 (sets the volume of the speaker)
Additional commands may follow a command on the same command
line without any character being required for separation. For the
command D parameters, see the description for the command in
question.
A version of the basic syntax is:
AT
Extended Syntax Command
• AT+= []
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• AT*=[]
Example! AT+CFUN=0 (powers down the module)
If several values are included in the command, they are separated by
commas. It is also possible to enter commands with no values.
Additional commands may follow an extended syntax command on the
same command line if a semicolon (; IRA 3B) is inserted after the
preceeding extended command as a separator.
Read Command Syntax
The read command is used to check the current values of
parameters. Type ‘?’, after the command line:
• AT+?
• AT*?
• AT?
Example! AT+CSCS? (show current character set)
“IRA”(information text response)
OK(final result code response)
Test Command Syntax
The test command is used to test whether the command has been
implemented or to give information about the type of subparameters it
contains. Type ‘?’, after the command line:
• AT+=?
• AT*=?
Example! AT+CPAS=? (shows supported values for the response
parameters)
CPAS: (0, 3, 4, 129, 130, 131) (supported values)
OK (final result code)
If the indicated  is not recognized, the result code ERROR
is issued.
Note!
Possible responses are indicated both as :(list of
supported) and (in most cases) the actual range of the
parameter values.
1.2.3 AT Response Syntax
The default mode response shown below, is in text mode. See the
command V for further details.
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Possible formats for the result codes are:
• Basic format result code, such as OK. The Basic result code also has
a numerical equivalent.
• Extended format result code, prefixed with a plus sign (+) or an
asterisk (*):
– AT+: 
– AT*: 
where the  is the result code value, note that a single
space character separates the colon character from the .
If several values are included in the result code, they are separated by
commas. It is also possible that a result code has no value. The
extended syntax result codes have no numerical equivalent. They are
always issued in alphabetical form.
• Information text response may contain multiple lines separated by
. The TE detects the end of informational text responses by
looking for a final result code response, such as OK.
There are two types of result code responses as outlined below:
Final Result Code
A final result code indicates to the TE that execution of the command
is completed and another command may be issued.
• If you type an implemented AT command, you should get the result
code OK.
• If you type an AT command that is not implemented, or which had
the wrong parameter or syntax, you will get an error result code. It is
ERROR or, for example, + ERROR followed by an
error code.
Final result codes are:
Value
General meaning
OK
Command executed, no errors
ERROR
Invalid command or command line too long
NO DIALTONE
No dialling possible, wrong mode
BUSY
Remote station busy
NO ANSWER
Connection completion time-out
NO CARRIER
Link not established or disconnected
Unsolicited Result Code
Unsolicited result codes indicate the occurrence of an event not directly
associated with a command being issued from the TE.
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1.3 Error Codes
1.3.1 +CME ERROR (Mobile Equipment Error Code)
This final result code is similar to the regular ERROR result code. If
+CME ERROR:  is the result code for any of the commands in a
command line, none of the commands in the same command line will
be executed (neither ERROR nor OK result code shall be returned as a
result of a completed command line execution). The format of  can
be either numerical or alphabetical, and is set with the +CMEE
command.
The table below provides the numerical values for the parameter .

Description Syntax
Phone failure
No connection to phone
Phone -adaptor link reserved
Operation not allowed
Operation not supported
PH-SIM PIN required
10
SIM not inserted
11
SIM PIN required
12
SIM PUK required
13
SIM failure
14
SIM busy
15
SIM wrong
16
Incorrect password
17
SIM PIN2 required
18
SIM PUK2 required
20
Memory full
21
Invalid index
22
Not found
23
Memory failure
24
Text string too long
25
Invalid characters in text string
26
Dial string too long
27
Invalid characters in dial string
30
No network service
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Description Syntax
31
Network time-out
32
Network not allowed - emergency calls only
100
Unknown
101- 255
Reserved by ETS
1.3.2 +CMS ERROR (Message Service Failure Result Code)
This final result code indicates an error related to mobile equipment or
to the network. The operation is similar to the ERROR result code.
None of the following commands in the same command line will be
executed. Neither ERROR nor OK result code will be returned. ERROR
is returned normally when an error is related to syntax or invalid
parameters. Nevertheless, it always appears when a command fails.
The syntax is as follows:
+CMS ERROR: 
Values for the  parameter are described in the following table.

Description
0 - 127
GSM 04.11 Annex E-2 values
128 - 255
GSM 03.40 subclause 9.2.3.22 values
300
ME failure
301
SMS service of ME reserved
302
Operation not allowed
303
Operation not supported
304
Invalid PDU mode parameter
305
Invalid text mode parameter
310
SIM not inserted
311
SIM PIN required
312
PH-SIM PIN required
313
SIM failure
314
SIM busy
315
SIM wrong
316
SIM PUK required
317
SIM PIN2 required
318
SIM PUK2 required
320
Memory failure
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Description
321
Invalid memory index
322
Memory full
330
SMSC address unknown
331
No network service
332
Network time-out
340
No +CNMA acknowledgment expected
500
Unknown error
- 511
Other values in range 256 - 511 are reserved
512-
Manufacturer specific
1.4 Examples on How to Use the AT Commands
After every group of AT commands there is a section where some of the
more complicated commands are exemplified. For a detailed
description of the command in question (valid parameter values, AT
command syntax and Response syntax) you are recommended to see its
own descriptive section.
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2.1 AT+CPIN
PIN Control
See 3.27, AT+CPIN PIN Control
2.2 ATA
Answer Incoming Call
Description
Command
Possible Responses
Answer an incoming
call
ATA
• ERROR
• OK
Signals the MS to answer an incoming call. The command is followed
by a final result code such as OK or ERROR, and the MS enters the
command state.
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2.3 ATD
Dial
Description
Syntax
Possible Responses
• Originate a call and
dial the phone
number specified in
the command as

or
• Do a network
detect
ATD[;]
•
•
•
•
•
•
•
CONNECT
CONNECT 
NO CARRIER
ERROR
NO DIAL TONE
BUSY
OK
Dial the phone number
stored in the mobile
phone which is
located by the index

ATD>ME[;]
•
•
•
•
•
•
•
CONNECT
CONNECT 
NO CARRIER
ERROR
NO DIAL TONE
BUSY
OK
Dial the phone number
stored in the SIM card
which is located by the
index 
ATD>SM[;]
•
•
•
•
•
•
•
CONNECT
CONNECT 
NO CARRIER
ERROR
NO DIAL TONE
BUSY
OK
Dial the phone number
stored in the Last
dialled number list on
the SIM card, which is
located by the index

The most recently
dialled number is
assumed to have
="1"
ATD>LD[;]
•
•
•
•
•
•
•
CONNECT
CONNECT 
NO CARRIER
ERROR
NO DIAL TONE
BUSY
OK
Redial the last phone
number dialled.
Ericsson specific
ATDL[;]
...
Used to initiate a phone connection, which may be data or voice (phone
number terminated by semicolon). The phone number used to establish
the connection will consist of digits and modifiers, or a stored number
specification.
If the dial string is followed by a semicolon this informs the phone that
the number is a voice rather than a data number.
If the dial string is omitted, and the semicolon included, the command
instructs the ME to do a network detect. If the network is available OK
is returned.
Abortability:
Aborting an ATD command is accomplished by the transmission from
the DTE to the DCE of any character. A single character shall be
sufficient to abort the command in progress; however, characters
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transmitted during the first 125 milliseconds after transmission of the
termination character are ignored. This is to allow the DTE to append
additional control characters such as line feed after the command line
termination character.

Description
“0 1 2 3 4 5 6 7
8 9 * # +”
Valid characters for origination
The W modifier is ignored but is included only for
compatibility purposes
The comma modifier is ignored but is included only for
compatibility purposes
The T modifier is ignored but is included only for
compatibility purposes
The P modifier is ignored but is included only for
compatibility purposes

Description
CONNECT
If connection is successfully established, only valid for data
connections
CONNECT

If connection is successfully established, only valid for data
connections
NO CARRIER
Unable to establish a connection or the connection
attempt was aborted by the user
ERROR
An unexpected error occurred while trying to establish the
connection
NO DIALTONE
The mobile phone is being used for a voice call or is not
within coverage of the network
BUSY
The phone number called is engaged, valid for data and
voice connections
OK
Only valid for voice connections

Description
28800
Connected with data bit rate of 28800 bits/s (HSCSD)
19200
Connected with data bit rate of 19200 bits/s (HSCSD)
14400
Connected with data bit rate of 14400 bits/s (HSCSD)
9600
Connected with data bit rate of 9600 bits/s
4800
Connected with data bit rate of 4800 bits/s
2400
Connected with data bit rate of 2400 bits/s
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2.4 ATH
Hang up
Description
Command
Possible Responses
Terminate the call
ATH
• ERROR
• OK
Signals the MS to terminate an active call.
2.5 ATL
Monitor Speaker Loudness
Description
Command
Possible Responses
Request monitor
speaker loudness
ATL[]
• OK
• ERROR
Shows the current
setting
ATL?
L: 
Answer an incoming
call
ATL=?
L: (list of supported
s)
Controls the volume of the monitor speaker. The specific loudness level
indicated by “low”, “medium” and “high” is manufacturer specific. It is
intended to indicate increasing volume.

Description
-14dB (minimum speaker volume)
-10.5dB
-7dB
-3.5dB
0dB (nominal speaker volume)
3.5dB
7dB
10.5dB
14dB (maximum speaker volume)
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2.6 ATO
Return to Online Data Mode
Description
Command
Possible Responses
Return to on-line data
mode
ATO[]
•
•
•
•
CONNECT
CONNECT 
NO CARRIER
ERROR
Switch to the on-line data mode from the on-line command mode during
an active call. Returns ERROR when not in on-line command mode.
2.7 ATP

Description
Return to on-line data state from on-line command
Select Pulse Dialling
Description
Command
Possible Responses
Select pulse dialling
ATP
OK
Show if the command
is supported?
ATP=?
OK
Command is ignored, and is implemented for compatibility only. It
would normally cause the next D command to use pulses when dialling
the number.
2.8 ATT
Select Tone Dialling
Description
Command
Possible Responses
Select tone dialling
ATT
OK
Show if the command
is supported?
ATT=?
OK
Command is ignored, and is implemented for compatibility only. It
would normally cause the next D command to use tones when dialling
the number.
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2.9 ATX
Call Progress Monitoring Control
Description
Command
Possible Responses
Set call progress
monitoring control
ATX=[] or ATX[]
• OK
• ERROR
Read the current
setting
ATX?
X: 
Show if the command
is supported?
ATX=?
X: (list of supported
s)
Defines if the dial-tone detection and busy-tone detection are to be used
during a call.
Note!
2.10 AT+CHUP

Description
Body and dial tone detection off. No line speed reported
on connection
Body and dial tone detection off. Report line speed on
connection
Busy detection on and dial tone detection off. Report line
speed on connection
Busy detect off and dial tone on. Report line speed on
connection
Busy detect and dial tone detection on. Report line
speed on connection. Default value
If there is no network available the  parameter will decide if “NO
DIALTONE” or “NO CARRIER” will be returned. If the call recipient
is busy, the  parameter will decide if “BUSY” or “NO CARRIER”
will be returned.
Hang up Call
Description
Command
Possible Responses
Request hang-up
AT+CHUP
• OK
• ERROR
Show if the commands
is supported
AT+CHUP=?
• OK
• ERROR
Causes the TA to hang-up the current call of the ME.
If no call is present, but an incoming call is notified, then the incoming
call shall be rejected.
Note!
The purpose of this command is not to replace the V.25ter [4] command
H, but to give an assured procedure to terminate an alternating mode
call.
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2.11 AT+CMOD Call Mode
Description
Command
Possible Responses
Request Call Mode
AT+CMOD=[]
• OK
• ERROR
Shows the current
setting
AT+CMOD?
• +CMOD: 
• OK
• ERROR
Show if the command
is supported
AT+CMOD=?
• +CMOD: (list of
supported
s)
• OK
• ERROR
Selects the call mode of further dialing commands (D) or for next
answering command (A). Mode can be either single or alternating. In
this ETS, terms “alternating mode” and “alternating call” refer to all
GSM bearer and teleservices that incorporate more than one basic
service (voice, data, fax) within one call.
When single mode is selected the call originating and hang-up
procedures are similar to procedures specified in ITU-T
Recommendations V.25ter [4], T.31 [5] and T.32 [6]. In GSM there can
be voice followed by data (refer GSM 02.02 [7]), alternating voice/data
(refer GSM 02.02 [7]) and alternating voice/fax calls (refer GSM 02.03
[8]).
Test command returns values supported by the TA as a compound
value.
Note!
+CMOD is set to zero after a successfully completed alternating mode
call. It is set to zero also after a failed answering. The power-up, factory
(&F) and user resets (Z), also set the value to zero. This reduces the
possibility that alternating mode calls are originated or answered
accidentally.
< mode>
Description
Single mode (default)
In order to avoid accidental originating or answering of
alternating calls is  set to single mode in following
cases:
- after a successfully completed alternating mode call;
- after a unsuccessful answering;
- after successfully execution of the commands &F and Z
Alternating voice/fax (teleservice # 61). Not Supported
Alternating voice/data (bearer service # 61). Not Supported
Voice followed by data (bearer service # 81). Not Supported
4..127
Reserved by GSM 07.07. Not Supported
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2.12 AT+CVHU
Voice Hang-Up
Description
Syntax
Possible Responses
Set Command
+CVHU=[]
• +CME ERROR: 
• OK
Read command
+CVHU?
• +CVHU: 
• +CME ERROR: 
Test if the command is
supported
+CVHU=?
+CVHU (list of
supported s)
Selects whether ATH or “drop DTR” causes a voice connection to be
disconnected or not. Voice connection also includes alternating mode
calls that are currently in voice mode.
Note!
2.13 AT+VTS
When =2, this command must be viewed in conjunction with
the V.25ter [3] command &D, or &D will be ignored.

Description
“Drop DTR” ignored but OK response given. ATH
disconnects
“Drop DTR” and ATH ignored but OK response given
“Drop DTR” behavior according to &D setting. ATH
disconnects. Default
DTMF and Tone Generation
Description
Command
Possible Responses
Request transmission of
DTMF tone(s)
AT+VTS=
OK
ERROR
Show if the command
is supported
AT+VTS=?
OK
ERROR
This command allows the transmission of DTMF tones. These tones
may be used, for example, when announcing the start of a recording
period. The command is write only. In this profile of commands, the
command does not operate in data or fax modes of operation
(+FCLASS=0,1,2-7).
Note!
The ATD-command is used only for dialing. It is not possible to
generate arbitrary DTMF tones using the ATD command.
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Note!
The AT+VTS command is used only during a voice call.

Description
ASCII
character
string
An ASCII character string with entries in the set 0-9, # , *, AD separated by commas. Each entry is interpreted as a
single ACSII character.
Example: The string “8,9” sends two DTMF tones, “8”
followed by “9”
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3.1 ATQ
Result Code Suppression
Description
Command
Possible Responses
Set Result Code
Suppression
ATQ[=]
• OK
• ERROR
Read the current
setting
ATQ?
Q: 
Show if the command
is supported
ATQ=?
Q: (list of supported
s)
Determines whether or not the DCE transmits result codes to the DTE.
When result codes are being suppressed, no portion of any intermediate,
final, or unsolicited result code - header, result text, line terminator, or
trailer - is transmitted.
Note!
3.2 ATS0
The Ingo-module triggers on the response from ref. Point E. It is
therefore not possible to turn off the response in ref. Point E.

Description
DCE transmits result codes. Default value
Result codes are suppressed and not transmitted
Automatic Answer Control
Description
Command
Possible Responses
Automatic answer
control
ATS0=[]
• OK
• ERROR
Read the current
setting
ATS0?

Show if the command
is supported
ATS0=?
S0: (list of supported
s)
Defines the automatic answering feature of the modem. A non-zero
value specifies the number of rings before the call is answered.
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Note!
3.3 ATS2
Call is always answered in the current fax class, regardless of whether
the incoming call is voice, data, or fax.

Description
Disable automatic answer. Default value
1-7
Answer after the specified number of rings
Escape Sequence Character
Description
Command
Possible Responses
Set escape sequence
character
ATS2=[]
• OK
• ERROR
Read the current
setting
ATS2

Show if the command
is supported
ATS2=?
S2: (list of supported
s)
Defines the character to be used as the escape sequence character when
switching from on-line data mode to on-line command mode. The
response to the command is modified to reflect the change.
Note!
3.4 ATS3

Description
43
Escape sequence character. Default value
0 to 255
Escape sequence character
If the  parameter is set to a value in the range of 128-255, the
escape sequence detection is disabled.
Command Line Termination Character
Description
Command
Possible Responses
Set Command Line
Termination Character
ATS3=
• OK
• ERROR
Read the current
setting
ATS3?

Show if the command
is supported
ATS3=?
S3: (list of supported
s)
This S-parameter represents the decimal IA5 value of the character
recognised by the DCE from the DTE to terminate an incoming
command line. It is also generated by the DCE as part of the header,
trailer, and terminator for result codes and information text, along with
the S4 parameter.
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The previous value of S3 is used to determine the command line
termination character for entry of the command line containing the S3
setting command. However, the result code issued uses the value of S3
as set during the processing of the command line. For example, if S3
was previously set to 13 and the command line "ATS3 30" is issued, the
command line is terminated with a  character (IA5 0/13), but the
result code issued uses the character with the ordinal value 30 (IA5 2/
14) in place of the .
3.5 ATS4

Description
13
Command line termination character, Default value
0 to 127
Command line termination character
Response Formatting Character
Description
Command
Possible Responses
Set Response
Formatting Character
ATS4=
• OK
• ERROR
Read the current
setting
ATS4?

Show if the command
is supported
ATS4=?
S4: (list of supported
s)
This S-parameter represents the decimal IA5 value of the character
generated by the DCE as part of the header, trailer, and terminator for
result codes and information text, along with the S3 parameter (see the
description of the V parameter for usage).
If the value of S4 is changed in a command line, the result code issued
in response to that command line will use the new value of S4.

Description
10
Formatting character. Default value
0 to 127
Formatting character
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3.6 ATS5
Command Line Editing Character (BACKSPACE)
Description
Command
Possible Responses
Request Command
Line Editing Character
ATS5=
• OK
• ERROR
Shows the current
setting
ATS5?

Show if the command
is supported
ATS5=?
S5: (list of supported
s)
This S-parameter represents the decimal IA5 value of the character
recognised by the DCE as a request to delete from the command line the
immediately preceding character.
3.7 ATS6

Description
Line editing character. Default value
0 to 127
Line editing character
Blind Dial Delay Control
Description
Command
Possible Responses
Blind dial delay control
ATS6=[]
OK
Read the current
setting
ATS6?

Show if the command
is supported
ATS6=?
S6: (list of supported
s)
Defines the number of seconds to wait before call addressing when a
dial tone is not detected. This command is ignored by the Infrared
Modem and is only included for compatibility.

Description
Wait two seconds before blind dialling.Default value.
2-255
Number of seconds to wait before blind dialling
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3.8 ATS7
Connection Completion Timeout
Description
Command
Possible Responses
Set connection
completion timeout
ATS7=[]
• OK
• ERROR
Read the current
setting
ATS7?

Show if the command
is supported
ATS7=?
S7: (list of supported
s)
Defines the maximum time allowed between completion of dialling and
the connection being established. If this time is exceeded then the
connection is aborted.
3.9 ATS8

Description
50
Timeout value in seconds. Default value
1-255
Timeout value in seconds
Comma Dial Modifier Delay Control
Description
Command
Possible Responses
Set Comma Dial
Modifier Delay Control
ATS8=[]
• OK
• ERROR
Read the current
setting.
ATS8?

Show if the command
is supported.
ATS8=?
S8: (list of supported
s)

Description
The value of the dial modifier delay in seconds. Default value
1-255
The value of the dial modifier delay in seconds
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3.10 ATS10
Automatic Disconnect Delay Control
Description
Command
Possible Responses
Set Automatic
Disconnect Delay
Control
ATS10=[]
• OK
• ERROR
Read the current
setting
ATS10?

Show if the command
is supported
ATS10=?
S10: (list of supported
s)
Specifies the amount of time that the DCE will remain connected to the
line after the absence of received line signals.
3.11 AT*ECAM

Description
Remains connected for two tenths of a second. Default value
1-254
Number of tenths of a second of delay
Ericsson Call Monitoring
Description
Command
Possible Responses
Set Call Monitoring on
or off
AT*ECAM=
•
•
•
•
OK
+CME ERROR: 
OK
ERROR
Read the current status
for Call Monitoring
AT*ECAM?
•
•
•
•
*ECAM: 
+CME ERROR: 
OK
ERROR
Test if the command is
supported
AT*ECAM=?
• *ECAM: list of
supported s
• +CME ERROR: 
• OK
• ERROR
This command activates or deactivates the call monitoring function in
the ME. When this log function is activated in the ME, the ME informs
about call events, such as incoming call, connected, hang up etc.
It is preferable that the current status shall always be sent with result
code *ECAV when activating the log function. The purpose of this is
two fold:
• to gather relevant information for the call log in a TE;
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• to make it possible for the TE to display call state information for an
ongoing call.

Description
The call log function is disabled (off)
The call log function is enabled (on)

Description
Integer (1-7)
A number which uniquely defines a call in the phone (=
number of call control process). There can not be two call
id’s with the same number simultaneously. The maximum
number of call control processes is 7, 5 multiparty
members, one call on hold and one waiting call

Description
IDLE
CALLING (MO)
CONNECTING (MO)
ACTIVE (connection between A and B)
HOLD
WAITING (MT)
ALERTING (MT)
BUSY

Description
VOICE
DATA
FAX
128
VOICE2

Description
Integer
Reported when returning to the IDLE state ( =
0).
8 = H’08 = CC (Call control)
68 =H’44 = MM (Mobile Management)
69 = H’45 = MS (Mobile Station)
122 = H’7A = RR (Radio Resources)

Description
Integer
Exit cause according to GSM 04.08. Reported when
returning to IDLE state ( = 0)
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3.12 AT*EDST

Description
String
String type phone number of format specified by .
Only valid for  = 1 (CALLING)

Description
Integer
Type of address octet in integer format (refer GSM 04.08
subclause 10.5.4.7). ; default 145 when dialing string
includes international access code character “+”,
otherwise 129. Only valid for  = 1 (CALLING)
Ericsson Daylight Saving Time
Description
Command
Possible Responses
Set Daylight Saving
Time
AT*EDST=
• +CME ERROR: 
• OK
• ERROR
Read current Daylight
Saving Time
AT*EDST?
•
•
•
•
Show if the command
is supported
AT*EDST=?
• • *EDST: (list of
supported s)
• +CME ERROR: 
• OK
• ERROR
*EDST: 
+CME ERROR: 
OK
ERROR
This command sets the daylight saving time hours.
Note!
This command affects the MS clock set with the AT+CCLK command.
To avoid confusion it is recommended the daylight saving time (DST)
is set with this command before setting the actual local time with
AT+CCLK.

Description
Standard time
Daylight saving time, +1 hour
Daylight saving time, +2 hours
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3.13 AT*EMAR
Ericsson Master Reset
Description
Command
Possible Responses
Perform a master reset
in the MS
AT*EMAR
• +CME ERROR: 
• OK
• ERROR
Shows if the command
is supported or not
AT*EMAR=?
• +CME ERROR: 
• OK
• ERROR
This command requests the MS to reset user data. The user data in the
MS will be reset to the default values. This command also unlocks the
MS.
3.14 AT*EPEE
Ericsson Pin Event
Description
Command
Possible Responses
Requests the MS to
inform when the PIN
code has been
inserted
AT*EPEE=
• +CME ERROR: 
• OK
• ERROR
Test if the command is
supported
AT*EPEE=?
• *EPEE: (list of
supported s)
• +CME ERROR: 
• OK
• ERROR
Read the current status
for PIN Code Request
AT*EPEE?
•
•
•
•
*EPEE: 
+CME ERROR: 
OK
ERROR
The command requests the MS to report when the PIN code has been
inserted and accepted.

Description
Request for report on inserted PIN code is not activated
(off)
Request for report on inserted PIN code is activated (on)
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3.15 AT*ESMM
Ericsson Settings Minute Minder
Description
Command
Possible Responses
Sets the Minute Minder
to on or off
AT*ESMM=
• +CME ERROR: 
• OK
• ERROR
Read the current
setting
AT*ESMM?
•
•
•
•
Test if the command is
supported or not and
the possible settings
AT*ESMM=?
• *ESMM: list of
supported s
• +CME ERROR: 
• OK
• ERROR
*ESMM: 
+CME ERROR: 
OK
ERROR
This command sets the minute minder setting to on or off in the MS.
Test command returns the  value.
3.16 AT+CALA

Description
OFF, minute minder off. Default setting
ON, minute minder on
Set Alarm
Description
Command
Possible Responses
Set an alarm time in
the ME
AT+CALA=