TT4031
(SE-GM29)
Wireless Modem
TT4031 (SE-GM29) Wireless Modem Unit
Sony Ericsson GM29
Original Equipment Manufactured by Sony Ericsson Mobile Communications International
Owner’s Manual
Owner’s Manual Rev 1.0 Page 1 of 1
Topp Consumer Products is an authorized distributor of the TT4031 (SE-GM29) Wireless Modem
unit, manufactured by Sony Ericsson Mobile Communications International and distributed by
Sony Ericsson Mobile Communications International as the GM29 Wireless Modem Unit. Topp
Consumer Products distributes product documentation for the SE-GM29 under license from Sony
Ericsson Mobile Communications International. Some materials provided under license from
Sony Ericsson Mobile Communications AB.
Other services provided using the TT4031 (SE-GM29) wireless Modem Unit
CAUTION: TOPP CONSUMER PRODUCTS DOES NOT PROVIDE, AND IS NOT RESPONSIBLE FOR, ANY AND ALLSERVICES PROVIDED IN CONJUNCTION WITH THE TT4031 (SE-GM29) WIRELESS MODEM UNIT. IT IS YOUR
RESPONSIBILITY TO OBTAIN THESE SERVICES FROM ANY THIRD PARTY OF YOUR CHOICE, INCLUDING, IF
AVAILABLE, FROM THE DISTRIBUTOR FROM WHICH YOU PURCHASED THIS TT4031 (SE-GM29) WIRELESS
MODEM UNIT. OTHER THAN THE LIMITED WARRANTY SET FORTH IN THIS OWNER’S MANUAL, NOTHING ELSE
CONTAINED IN THE MANUAL OR OTHER PRODUCT DOCUMENTATION SHALL BE CONSTRUED TO CREATE AN
EXPRESS WARRANTY OF ANY KIND WHATSOEVER WITH RESPECT TO THE PRODUCT.
Customer Service
INSTALLATION: If you encounter problems during the installation of this product, or cannot find the information you need,
please contact your distributor or Topp Consumer Products Customer Service. Refer to this Owner’s Manual TT4031 (SEGM29) for the complete information on the characteristics and operation of this product. The contact numbers and e-mail
address for Topp Consumer Products Customer Service are:
Technical Support is available from 9:00 AM to 5:00 PM Eastern Time, Monday to Friday. To expedite the support
process, please have the product S/N, ESN or IMEI and model number available when contacting Topp Consumer
Products Customer Service.
In the event that your equipment requires service, you must contact Topp Consumer Products Customer Service to obtain
a Return Merchandise Authorization (RMA) number before returning any product. Send your request by E-mail to the
address indicated above for instructions and requirements for requesting an RMA. If you are returning a product for repair,
you must also provide a fault description before Topp Consumer Products will issue an RMA number. When providing the
RMA number, Topp Consumer Products will provide you with shipping instructions to assist you in returning the
equipment. You must provide a purchase receipt or other proof of the date of original purchase before warranty service
will be rendered.
OPERATION: If you encounter problems during the operation of this product, please contact your service provider to
determine whether the problem is service and/or product-related. Topp Consumer Products does not provide, and is not
responsible for, any and all services provided in conjunction with the product. It is your responsibility to obtain these
services from any third party of your choice, including, if available, from your distributor. Topp Consumer Products
Customer Service is available only for problems related to the TT4031 (SE-GM29) Wireless Modem unit itself.
We have made every reasonable effort to assure the accuracy and usefulness of this manual, however we are not
responsible for errors or omissions contained in this manual or for the misuse or misapplication of the product. Due to our
continuing program of product development and improvement, the specifications and features of our product are subject
to change without notice.
No part of this publication may be reproduced in any form, in whole or in part, without the written permission of Topp
Consumer Products.
Telephone number: +1-786-331-3300 E-mail address: telematic@toppcompanies.com
Fax Number: +1-786-331-3333 Website: www.toppcompanies.com
© 2003 Topp Consumer Products. All rights reserved.
The Topp Consumer Products names, product names and logos are trademarks or registered trademarks of Topp
Consumer Products. Other product names are trademarks or registered trademarks of their
respective owners. The Sony Ericsson marble logo is the trademark or registered trademark of Sony
Ericsson Mobile Communications AB. Ericsson is the trademark or registered trademark of
Telefonaktiebolaget LM Ericsson. Sony is the trademark or registered trademark of Sony Corporation
Owner’s Manual Rev 1.0 Page 2 of 2
Notices, License, and Warranty
CAUTION: TOPP CONSUMER PRODUCTS PROVIDES TO YOU THIS TT4031 (SE-GM29) WIRELESS MODEM
PRODUCT ALONE. HOWEVER, THIS TT4031 (SE-GM29)
RECEIVE WHERE AVAILABLE FROM A THIRD PARTY (SUCH AS YOUR DISTRIBUTOR) OTHER SERVICES
ENABLED THROUGH THE USE OF THIS TT4031 (SE-GM29)
PRODUCTS DOES NOT PROVIDE, AND IS NOT RESPONSIBLE FOR, ANY SERVICES PROVIDED THOUGH OR IN
CONJUNCTION WITH THIS TT4031 (SE-GM29)
*If you purchased this TT4031 (SE-GM29)
references above to “Distributor” should be understood to mean Topp Consumer Products.
LICENSE: USING THIS TT4031 (SE-GM29)
OF THE LICENSE AGREEMENT SET FORTH BELOW. IF YOU DO NOT AGREE TO THESE TERMS, RETURN
THETT4031 (SE-GM29)
DISTRIBUTOR FROM WHICH YOU PURCHASED THE PRODUCT.
The use of the software and other proprietary information embedded in the TT4031 (SE-GM29)
(collectively, the “Proprietary Information”
basis and only in machine-readable form (object code) solely and exclusively for use in connection with only one (1)
TT4031 (SE-GM29)
this manual. All rights not granted herein to the Proprietary Information are expressly reserved by Topp Consumer
Products and Sony Ericsson Mobile Communications International, as applicable.
You may use the Proprietary Information only as installed by Sony Ericsson Mobile Communications International on this
TT4031 (SE-GM29)
The license is effective for the term specified by Topp Consumer Products or the distributor from which you purchased this
TT4031 (SE-GM29)
(SE-GM29)
forth herein.
YOU SHALL NOT, NOR SHALL YOU ALLOW ANYONE ELSE TO COPY, DECOMPILE, DISASSEMBLE OR
OTHERWISE REVERSE ENGINEER THE PROPRIETARY INFORMATION, OR ATTEMPT TO DO SO. YOU SHALL
NOT, NOR SHALL YOU ALLOW ANYONE ELSE TO REMOVE, COVER OR ALTER ANY PATENT, COPYRIGHT OR
TRADEMARK NOTICES PLACED UPON, EMBEDDED IN OR DISPLAYED BY THIS TT4031 (SE-GM29)
MODEM PRODUCT OR ITS PACKAGING OR RELATED MATERIALS.
IF YOU TRANSFER POSSESSION OF THIS TT4031 (SE-GM29)
TRANSFER WITH IT IF THE OTHER PARTY ACCEPTS THE TERMS AND CONDITIONS OF THIS LICENSE. YOU
MUST IMMEDIATELY NOTIFY TOPP CONSUMER PRODUCTS OF THE TRANSFER. YOU MAY NOT EXPORT OR REEXPORT THE PROPRIETARY INFORMATION IN VIOLATION OF ANY APPLICABLE LAWS OR REGULATIONS.
You may not sublicense, assign or transfer this license except as expressly set forth above. Any attempt otherwise to
sublicense, assign or transfer any of the rights, duties or obligations hereunder is void.
LIMITED 1-YEAR WARRANTY: The TT4031 (SE-GM29)
are warranted by Topp Consumer Products against defects in materials and workmanship under normal use for a period
of one (1) year from the date of original purchase. THIS WARRANTY IS VOID IF THE TT4031 (SE-GM29)
MODEM PRODUCT CASING IS OPENED BY ANYONE OTHER THAN A TOPP CONSUMER PRODUCT AUTHORIZED
SERVICE FACILITY.
The software embedded in this TT4031 (SE-GM29)
against failure to perform in substantial conformance with its specifications under normal use for a period of 90 days from
the date of valid activation; provided
software will be error-free or uninterrupted or that the software functions will meet your requirements or that all defects in
the software will be corrected. THIS WARRANTY IS VOID IF YOU BREACH THE SOFTWARE LICENSE SET FORTH
ABOVE.
This Limited Warranty is good only to the original purchaser of this TT4031 (SE-GM29) Wireless Modem product, bearing
the TT4031 (SE-GM29) label, in the U.S. during the warranty period specified above and is conditioned upon proper use
of this TT4031 (SE-GM29)
be required before warranty service is rendered.
THIS LIMITED WARRANTY DOES NOT COVER: (1) damage, failure or malfunction caused by or attributable to acts of
God, abuse, neglect, accident, misuse, improper or abnormal usage, failure to follow instructions, improper installation or
maintenance, alteration, lightning or other incidence of excess voltage or current, or any other occurrence beyond the
reasonable control of Topp Consumer Products, including, without limitation, services not provided by Topp Consumer
Wireless Modem product. This license will also terminate if you fail to comply with any term or condition set
WIRELESS MODEM PRODUCT UNOPENED TO TOPP CONSUMER PRODUCTS OR YOUR
Wireless Modem product under normal conditions in accordance with the specifications set forth in
Wireless Modem product.
Wireless Modem product. You may terminate it at any time by destroying or disabling this TT4031
, however, that Topp Consumer Products does not warrant that the operation of the
Wireless Modem product. A purchase receipt or other proof of the date of original purchase will
WIRELESS MODEM PRODUCT.
Wireless Modem product directly from Topp Consumer Products, the
WIRELESS MODEM PRODUCT IMPLIES ACCEPTANCE OF THE TERMS
) is licensed to you on a non-exclusive, non-transferable, and fully revocable
Wireless Modem product is warranted by Topp Consumer Products
WIRELESS MODEM PRODUCT MAY ALLOW YOU TO
WIRELESS MODEM PRODUCT. TOPP CONSUMER
Wireless Modem product
WIRELESS
WIRELESS MODEM PRODUCT, THIS LICENSE WILL
Wireless Modem product hardware, accessories and supplies
WIRELESS
Owner’s Manual Rev 1.0 Page 3 of 3
Products that may be enabled through the use of this TT4031 (SE-GM29) Wireless Modem product; (2) this TT4031 (SE-
Wireless Modem product, if the serial number has been removed or defaced; (3) any repairs other than those
GM29)
provided by a Topp Consumer Products Authorized Service Facility; (4) malfunctions due to the use of this TT4031 (SE-
Wireless Modem product in conjunction with accessories, products, or ancillary or peripheral equipment not
GM29)
furnished by Topp Consumer Products; (5) consumables such as fuses; (6) any modification of any part of this TT4031
(SE-GM29)
product at any time not within a valid license period for the embedded software; or (8) any shipment of this TT4031 (SEGM29)
This Limited Warranty covers batteries (if any) supplied with the TT4031 (SE-GM29) Wireless Modem product only if
battery capacity falls below 80% of rated capacity or the battery leaks, and this Limited Warranty does not cover any
battery if (a) the battery has been charged by a battery charger not specified or approved by Topp Consumer Products for
charging the battery; (b) any seals of the battery are broken or show evidence of tampering; or (c) the battery has been
used in equipment other than this TT4031 (SE-GM29)
NO OTHER EXPRESS WARRANTY IS MADE BY TOPP CONSUMER PRODUCTS OR ITS SUPPLIERS NOR IS ANY
OTHER EXPRESS WARRANTY APPLICABLE TO THIS TT4031 (SE-GM29)
PROPRIETARY INFORMATION (INCLUDING THE SOFTWARE). NO IMPLIED WARRANTIES ARE MADE IN
RESPECT OF THIS TT4031 (SE-GM29)
(INCLUDING THE SOFTWARE) AND, TO THE EXTENT PERMITTED BY APPLICABLE LAW, TOPP CONSUMER
PRODUCTS DISCLAIMS ANY AND ALL IMPLIED WARRANTIES IN RESPECT OF THIS TT4031 (SE-GM29)
WIRELESS MODEM PRODUCT AND THE PROPRIETARY INFORMATION (INCLUDING THE SOFTWARE). IF ANY
IMPLIED WARRANTY APPLIES TO THIS TT4031 (SE-GM29)
INFORMATION (INCLUDING THE SOFTWARE), SUCH IMPLIED WARRANTY IS LIMITED IN DURATION TO THE
DURATION OF THE EXPRESS LIMITED WARRANTY SET FORTH ABOVE.
In the event of a breach of warranty, Topp Consumer Products will, at its option, unless otherwise provided by law: (a)
correct the defect by repairing this TT4031 (SE-GM29)
replace this TT4031 (SE-GM29)
the provisions of this License, Warranty and Notices section shall also be referred to as “this TT4031 (SE-GM29)
Modem product”). However, Topp Consumer Products will not pay for (i) costs of installation or removal, (ii) costs of
product set-up or adjustment, or (iii) shipping or related charges of returning this TT4031 (SE-GM29)
product for repair, regardless of whether the repair is covered by the Limited Warranty set forth above. You must pay for
shipment of this TT4031 (SE-GM29)
Service Facility and, if the warranty claim is valid, Topp Consumer Products will pay for shipment of the repaired or
replaced TT4031 (SE-GM29)
the date of original purchase before warranty service will be rendered. All replaced parts and products, and products on
which a refund is made, become the property of Topp Consumer Products. Unless prohibited by law, new or reconditioned
parts and TT4031 (SE-GM29)
or replaced parts and TT4031 (SE-GM29)
limited warranty period. You will be charged for the repair or replacement of this TT4031 (SE-GM29)
product made after the expiration of the warranty period.
Applicable law may restrict or prohibit certain of the warranty limitations set forth above, in which case they will not apply
to you. You may also have additional rights not stated in this document. If any portion of this limited warranty is illegal or
unenforceable, such partial illegality or unenforceability shall not affect the remainder of this limited warranty.
This Limited Warranty allocates the risk of product and software failure between you and Topp Consumer Products, and
Topp Consumer Products’ pricing of this TT4031 (SE-GM29)
the limitations of liability set forth below. The agents, employees, distributors, and dealers of Topp Consumer Products are
not authorized to make modifications to this Limited Warranty, or make additional warranties binding on Topp Consumer
Products. Accordingly, additional statements such as dealer advertising or presentation, whether oral or written, do not
constitute warranties by Topp Consumer Products and should not be relied upon.
LIMITATION OF LIABILITY: NEITHER TOPP CONSUMER PRODUCTS NOR ITS SUPPLIERS SHALL BE LIABLE FOR
THE LOSS OF THE USE OF THIS TT4031 (SE-GM29)
PROPRIETARY INFORMATION (INCLUDING THE SOFTWARE), NOR FOR THE LOSS OF PROPERTY OR DATA,
LOSS OF INCOME, INCONVENIENCE, OR ANY OTHER DAMAGES, WHETHER DIRECT, INDIRECT, SPECIAL,
PUNITIVE OR CONSEQUENTIAL, ARISING OUT OF THE USE OF, OR INABILITY TO USE, THIS TT4031 (SE-GM29)
WIRELESS MODEM PRODUCT, ACCESSORIES OR THE PROPRIETARY INFORMATION (INCLUDING THE
SOFTWARE) OR FOR BREACH OF CONTRACT OR OF ANY EXPRESS OR IMPLIED WARRANTY WHATSOEVER,
EVEN IF TOPP CONSUMER PRODUCTS OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES AND EVEN IF SUCH DAMAGES ARISE FROM THE NEGLIGENCE OF TOPP CONSUMER
PRODUCTS AND/OR ITS SUPPLIERS.
Applicable law may restrict or prohibit certain of the liability limitations set forth above, in which case they will not apply to
you. You may also have additional rights not stated in this document. If any portion of this limitation on liability is illegal or
unenforceable, such partial illegality or unenforceability shall not affect the remainder of this limitation on liability.
Wireless Modem product or any cosmetic damage; (7) use of this TT4031 (SE-GM29) Wireless Modem
Wireless Modem product (claims must be presented to the carrier).
Wireless Modem product.
WIRELESS MODEM PRODUCT OR THE
WIRELESS MODEM PRODUCT OR THE PROPRIETARY INFORMATION
WIRELESS MODEM PRODUCT OR THE PROPRIETARY
Wireless Modem product without charge for parts and labor; or (b)
Wireless Modem product with one of the same or similar design (which for all purposes of
Wireless
Wireless Modem
Wireless Modem product to the nearest Topp Consumer Products Authorized
Wireless Modem product back to you. You must provide a purchase receipt or other proof of
Wireless Modem products may be used in the performance of warranty service. Repaired
Wireless Modem products are warranted for the remainder of the original
Wireless Modem
Wireless Modem product reflects this allocation of risk and
WIRELESS MODEM PRODUCT, ACCESSORIES OR THE
Owner’s Manual Rev 1.0 Page 4 of 4
YOU ACKNOWLEDGE THAT THIS TT4031 (SE-GM29) WIRELESS MODEM PRODUCT MAY ALLOW YOU, AT YOUR
DISCRETION, TO RECEIVE WHERE AVAILABLE FROM A THIRD PARTY (SUCH AS YOUR DISTRIBUTOR) OTHER
SERVICES ENABLED THROUGH THE USE OF THIS TT4031 (SE-GM29)
IRREVOCABLY AND ABSOLUTELY AGREE THAT TOPP CONSUMER PRODUCTS SHALL NOT BE LIABLE IN
CONNECTION WITH ANY ACTIONS, OMISSIONS, OR OTHER OCCURRENCES WITH RESPECT TO SUCH
SERVICES.
CAUTION: Modifications or adjustments to this TT4031 (SE-GM29) Wireless Modem product, which are not expressly
approved by Topp Consumer Products, may void the user’s right or authority to operate this TT4031 (SE-GM29) Wireless
Modem product.
WIRELESS MODEM PRODUCT, AND YOU
Owner’s Manual Rev 1.0 Page 5 of 5
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 2003)
Sony Ericsson Mobile Communications International publishes this manual without making
any warranty as to the content contained herein. Further Sony Ericsson Mobile
Communications International reserves the right to make modifications, additions and
deletions to this manual due to typographical errors, inaccurate information, or improvements to
programs and/or equipment at any time and without notice. Such changes will, nevertheless be
incorporated into new editions of this manual.
All rights reserved.
© Sony Ericsson Mobile Communications International, 2003
Owner’s Manual Rev 1.0 Page 6 of 6
Table of Content
Part 1: Overview .................................................................................................................................. 12
1. Introduction ............................................................................................................................... 13
1.1 Target Users....................................................................................................................... 13
1.2 Prerequisites ...................................................................................................................... 13
1.3 Manual Structure.............................................................................................................. 13
2. TT4031 (SE-GM29) Modem ................................................................................................. 15
2.1 Description.......................................................................................................................... 15
2.2 Highlights ............................................................................................................................ 15
2.3 TT4031 (SE-GM29) in a Communication System................................................ 16
2.4 Main Features and Services ......................................................................................... 18
2.5 Service and Support ....................................................................................................... 22
3. Abbreviations............................................................................................................................. 23
Part 2: Integrating the Modem....................................................................................................... 25
1. Mechanical Description .......................................................................................................... 26
1.1 Overview ............................................................................................................................. 26
1.2 Physical Dimensions........................................................................................................ 28
2. Electrical Description .............................................................................................................. 29
2.1 Power Connector .............................................................................................................. 29
2.2 Audio Connector ............................................................................................................... 30
2.3 Antenna Connector.......................................................................................................... 32
2.4 SIM Card Reader .............................................................................................................. 33
2.5 RS232 Serial Port............................................................................................................. 34
2.6 Real Time Clock ................................................................................................................ 36
2.7 Software Updates............................................................................................................. 36
3. Operation .................................................................................................................................... 37
3.1 Switching On the Modem .............................................................................................. 37
3.2 Switching Off the Modem.............................................................................................. 37
3.3 Resetting the Modem ..................................................................................................... 37
3.4 Operating States/LED..................................................................................................... 38
4. Safety and Product Care ....................................................................................................... 39
4.1 Safety Instructions.......................................................................................................... 39
4.2 General Precautions........................................................................................................ 39
4.3 SIM Card Precautions..................................................................................................... 40
4.4 Antenna Precautions....................................................................................................... 40
5. Installation of the Modem..................................................................................................... 42
5.1 Where to Install the Modem ........................................................................................ 42
5.2 How to Install the Modem ............................................................................................ 43
5.3 OEM Labeling ..................................................................................................................... 44
5.4 Antenna ............................................................................................................................... 44
5.5 Attachments....................................................................................................................... 47
6. Technical Data........................................................................................................................... 48
7. FCC Certificate .......................................................................................................................... 53
Part 3: Using AT Commands ........................................................................................................... 54
1. Introduction to AT Commands............................................................................................ 55
1.1 Overview ............................................................................................................................. 55
1.2 Syntax Description .......................................................................................................... 55
Owner’s Manual Rev 1.0 Page 7 of 7
1.3 Error Codes ........................................................................................................................ 59
1.4 Examples on How to Use the AT Commands ........................................................ 62
Call Control......................................................................................................................................... 63
2.1 AT+CPIN PIN Control ..................................................................................................... 63
2.2 ATA Answer Incoming Call ........................................................................................... 63
2.3 ATD Dial............................................................................................................................... 64
2.4 ATH Hang up...................................................................................................................... 66
2.5 ATO Return to Online Data Mode............................................................................... 66
2.6 ATP Select Pulse Dialing ................................................................................................ 66
2.7 ATT Select Tone Dialing................................................................................................. 67
2.8 ATX Call Progress Monitoring Control ...................................................................... 67
2.9 AT+CHUP Hang up Call.................................................................................................. 68
2.10 AT+CMOD Call Mode ...................................................................................................... 68
2.11 AT+CVHU Voice Hang-Up ............................................................................................. 69
2.12 AT+VTS DTMF and Tone Generation........................................................................ 70
Control and Status .......................................................................................................................... 71
3.1 ATQ Result Code Suppression..................................................................................... 71
3.2 ATS0 Automatic Answer Control ................................................................................ 71
3.3 ATS2 Escape Sequence Character............................................................................. 72
3.4 ATS3 Command Line Termination Character........................................................ 73
3.5 ATS4 Response Formatting Character..................................................................... 73
3.6 ATS5 Command Line Editing Character (BACKSPACE) ..................................... 74
3.7 ATS6 Blind Dial Delay Control..................................................................................... 74
3.8 ATS7 Connection Completion Timeout .................................................................... 75
ATS8 Comma Dial Modifier Delay Control...................................................................... 76
3.10 ATS10 Automatic Disconnect Delay Control.......................................................... 76
3.11 AT*ECAM Ericsson Call Monitoring............................................................................ 77
3.12 AT*EDST Ericsson Daylight Saving Time................................................................ 78
3.13 AT*EMAR Ericsson Master Reset................................................................................ 78
3.14 AT*EPEE Ericsson Pin Event ........................................................................................ 79
3.15 AT+CCLK Set Clock and Date ..................................................................................... 80
3.16 AT+CEER Extended Error Report............................................................................... 80
3.17 AT+CFUN Set Phone Functionality ............................................................................ 81
3.18 AT+CIND Indicator Control.......................................................................................... 82
3.19 AT+CLAC List all available AT Commands ............................................................. 83
3.20 AT+CMEE Mobile Equipment Error............................................................................ 83
3.21 AT+CMER Mobile Equipment Event Reporting...................................................... 84
3.22 AT+CPAS Phone Activity Status................................................................................. 85
3.23 AT+CPIN PIN Control ..................................................................................................... 87
3.24 AT+CPWD Change Password....................................................................................... 88
3.25 AT+CR Service Reporting Control ............................................................................. 90
3.26 AT+CRC Cellular Result Code...................................................................................... 91
3.27 AT+CSAS Save Settings................................................................................................ 92
3.28 AT+CSQ Signal Strength .............................................................................................. 93
3.29 AT+CTZU Automatic Time Zone Update................................................................. 93
4. Audio............................................................................................................................................. 95
4.1 AT*E2EAMS Ericsson M2M Audio Profile Modification........................................ 95
4.2 AT*E2APR M2M Audio Profile Manipulation.......................................................... 100
4.3 AT*EALR Ericsson Audio Line Request................................................................... 102
4.4 AT*EAMS Ericsson Audio Mode Selection............................................................. 103
4.5 AT*EARS Ericsson Audio Ring Signal ..................................................................... 105
Owner’s Manual Rev 1.0 Page 8 of 8
4.6 AT*ELAM Ericsson Local Audio Mode ..................................................................... 106
4.7 AT*EMIC Ericsson Microphone Mode...................................................................... 106
4.8 AT*EMIR Ericsson Music Mute Indication Request............................................ 107
4.9 AT*EXVC Ericsson SET External Volume Control............................................... 108
5. Data - CSD/HSCSD ............................................................................................................... 110
5.1 AT+CBST Select Bearer Service Type.................................................................... 110
5.2 AT+CRLP Radio Link Protocol.................................................................................... 111
6. Data - GPRS............................................................................................................................. 114
6.1 AT+CGACT PDP Context Activate or Deactivate................................................ 114
6.2 AT+CGATT GPRS Attach or Detach......................................................................... 115
6.3 AT+CGDATA Enter Data State.................................................................................. 116
6.4 AT+CGDCONT Define PDP Context......................................................................... 116
6.5 AT+CGEREP GPRS Event Reporting........................................................................ 118
6.6 AT+CGPADDR Show PDP Address........................................................................... 119
6.7 AT+CGQMIN Quality of Service Profile (Minimum Acceptable).................... 120
6.8 AT+CGQREQ Quality of Service Profile (Requested)........................................ 123
6.9 AT+CGREG GPRS Network Registration Status ................................................. 125
6.10 AT+CGSMS Select Service for MO SMS Messages............................................ 127
7. Data - HSCSD.......................................................................................................................... 128
7.1 AT+CHSC HSCSD Current Call Parameters ......................................................... 128
7.2 AT+CHSD HSCSD Device Parameters ................................................................... 129
7.3 AT+CHSN HSCSD Non Transparent Call Configuration................................... 130
7.4 AT+CHSR HSCSD Parameters Report.................................................................... 131
7.5 AT+CHSU HSCSD Automatic User Initiated Upgrading................................... 133
8. Fax............................................................................................................................................... 134
8.1 AT*E2FAX Ericsson M2M Fax Comm. Baud Rate Modification...................... 134
8.2 Low Level Fax Commands .......................................................................................... 135
9. Identification............................................................................................................................ 136
9.1 AT Attention Command ............................................................................................... 136
9.2 AT&F Set to Factory Defined Configuration......................................................... 136
9.3 AT&W Store User Profile.............................................................................................. 136
9.4 AT* List all Supported AT Commands.................................................................... 137
9.5 AT+CGMI Read MS Manufacturer Identification ................................................ 137
9.6 AT+CGMM Read MS Model Identification ............................................................. 137
9.7 AT+CGMR Read MS Revision Identification ......................................................... 138
9.8 AT+CGSN Read MS Product Serial Number Identification............................. 139
9.9 ATI Identification Information................................................................................... 139
9.10 AT+GCAP Request Modem Capabilities List......................................................... 140
10. Interface................................................................................................................................ 141
10.1 AT+CPIN PIN Control ................................................................................................... 141
10.2 AT&C Circuit 109 (DCD) Control .............................................................................. 141
10.3 AT&D Circuit 108 (DTR) Response.......................................................................... 141
10.4 AT&S Circuit 107 (DSR) Response.......................................................................... 142
10.5 AT+WS46 Mode Selection .......................................................................................... 142
10.6 ATE Command Echo...................................................................................................... 143
10.7 ATV DCE Response Format ........................................................................................ 143
10.8 ATZ Reset to Default Configuration ........................................................................ 144
10.9 AT+CMUX Switch to 07.10 Multiplex Protocol .................................................... 145
10.10 AT+CRES Restore SMS Settings .......................................................................... 147
10.11 AT+ICF Cable Interface Character Format ...................................................... 147
10.12 AT+IFC DTE-DCE Local Flow Control ................................................................. 148
Owner’s Manual Rev 1.0 Page 9 of 9
10.13 AT+ILRR Cable Interface Local Rate Reporting ............................................. 149
10.14 AT+IPR Cable Interface Port Command............................................................ 150
10.15 AT*E2ESC M2M Escape Sequence Guard Time.............................................. 151
11. Network ................................................................................................................................. 152
11.1 AT*E2CD Ericsson M2M Cell Description .............................................................. 152
11.2 AT*E2EMM Ericsson M2M Engineering Monitoring Mode................................ 153
11.3 AT*E2SPN M2M Service Provider Indication ....................................................... 159
11.4 AT*EALS Ericsson Request ALS Status ................................................................. 160
11.5 AT*ECSP Ericsson Customer Service Profile........................................................ 160
11.6 AT*EPNR Ericsson Read SIM Preferred Network ............................................... 161
11.7 AT*EPNW Ericsson Write SIM Preferred Network.............................................. 162
11.8 AT*E2SSN Ericsson M2M SIM Serial Number ..................................................... 163
11.9 AT*ESLN Ericsson Set Line Name ........................................................................... 164
11.10 AT+CIMI Subscriber Identification...................................................................... 165
11.11 AT+CLCK Facility Lock ............................................................................................. 165
11.12 AT+CNUM Subscriber Number.............................................................................. 167
11.13 AT+COLP Connected Line Identification Presentation................................. 169
11.14 AT+COPS Operator Selection................................................................................ 170
11.15 AT+CREG Network Registration ........................................................................... 171
11.16 AT*ECPI Ciphering Indicator ................................................................................. 172
11.17 AT*E2NBTS Ericsson M2M Neighbour BTS....................................................... 174
12. Phonebook ............................................................................................................................ 176
12.1 AT*E2PBCS Ericsson M2M Phonebook Check Sum........................................... 176
12.2 AT*ESAG Ericsson Add to Group ............................................................................. 176
12.3 AT*ESCG Ericsson Create Group ............................................................................. 177
12.4 AT*ESCN Ericsson Set Credit Card Number........................................................ 178
12.5 AT*ESDG Ericsson Delete Group ............................................................................. 180
12.6 AT*ESDI Ericsson Delete Group Item.................................................................... 180
12.7 AT*ESGR Ericsson Group Read ................................................................................ 181
12.8 AT*EGIR Ericsson Group Item Read....................................................................... 182
12.9 AT*ESNU Ericsson Settings Number ...................................................................... 182
12.10 AT+CPBF Phonebook Find ...................................................................................... 184
12.11 AT+CPBR Phonebook Read .................................................................................... 184
12.12 AT+CPBS Phone Storage ........................................................................................ 186
12.13 AT+CPBW Phonebook Write .................................................................................. 187
13. Short Message Services - Point to Point................................................................... 189
13.1 AT+CPIN PIN Control ................................................................................................... 189
13.2 AT+CGSMS Select Service for MO SMS Messages............................................ 189
13.3 AT+CPMS Preferred Message Storage................................................................... 189
13.4 AT+CSCA Service Centre Address........................................................................... 191
13.5 AT+CMGF Message Format........................................................................................ 192
13.6 AT+CMGW Write Message to Memory ................................................................... 192
13.7 AT+CMGS Send Message............................................................................................ 195
13.8 AT+CMSS Send From Storage.................................................................................. 199
13.9 AT+CMGC Send Command ........................................................................................ 200
13.10 AT+CNMI New Message Indications to TE ....................................................... 203
13.11 AT+CMGR Read Message........................................................................................ 207
13.12 AT+CMGL List Message ........................................................................................... 213
13.13 AT+CMGD Delete Message..................................................................................... 220
13.14 AT+CSDH Show Text Mode Parameters ........................................................... 221
13.15 AT+CSMP Set Text Mode Parameters................................................................ 221
Owner’s Manual Rev 1.0 Page 10 of 10
13.16 AT+CSCS Select Character Set ............................................................................ 223
13.17 AT+CSMS Select Message Service...................................................................... 224
14. Short Message Services - Cell Broadcast ................................................................. 226
14.1 AT+CNMI New Message Indications to TE ........................................................... 226
14.2 AT+CSCB Select Cell Broadcast Message Type.................................................. 226
15. SIM Application Toolkit .................................................................................................... 227
15.1 AT+CPIN PIN Control ................................................................................................... 227
15.2 AT*E2STKS SIM Application Toolkit Settings...................................................... 227
15.3 AT*E2STKD M2M STK Display Text ........................................................................ 228
15.4 AT*E2STKG M2M STK Get Inkey ............................................................................. 229
15.5 AT*E2STKI M2M STK Get Input ............................................................................... 232
15.6 AT*E2STKL M2M STK Select Item........................................................................... 234
15.7 AT*E2STKM M2M STK Set Up Menu....................................................................... 237
15.8 AT*E2STKN M2M STK Envelope (Menu Selection)............................................ 239
15.9 AT*E2STKC M2M STK Set Up Call........................................................................... 240
15.10 *E2STKE STK Send Short Message .................................................................... 242
15.11 *E2STKP STK Send SS ............................................................................................ 244
15.12 *E2STKU STK Send USSD...................................................................................... 245
15.13 *E2STKR STK Refresh.............................................................................................. 246
15.14 AT*E2STKTO SIM Application Toolkit Settings............................................... 246
16. Supplementary Services ................................................................................................. 248
16.1 AT+CPIN PIN Control ................................................................................................... 248
16.2 AT+CACM Accumulated Call Meter ......................................................................... 248
16.3 AT+CAMM Accumulated Call Meter Maximum.................................................... 249
16.4 AT+CAOC Advice of Charge....................................................................................... 249
16.5 AT+CPUC Price Per Unit and Currency Table...................................................... 251
16.6 AT*EDIF Ericsson Divert Function........................................................................... 252
16.7 AT*EIPS Identity Presentation Set.......................................................................... 252
16.8 AT*ELIN Ericsson Line Set ......................................................................................... 253
16.9 AT*E2SSD M2M Supplementary Service Dispatch............................................ 254
16.10 AT*E2SSI M2M Supplementary Service Indications .................................... 255
16.11 AT+CCFC Call Forwarding number and Conditions....................................... 259
16.12 AT+CCWA Call Waiting ............................................................................................ 262
16.13 AT+CHLD Call Hold and Multiparty ..................................................................... 264
16.14 AT+CLIP Call Line Identification Presentation ................................................ 265
16.15 AT+CLIR Calling Line Identification Restriction.............................................. 267
16.16 AT+CSSN Supplementary Service Notification............................................... 268
16.17 AT+CUSD Unstructured Supplementary Service Data ................................ 270
17. Alphabetical Listing of AT Commands........................................................................ 274
Owner’s Manual Rev 1.0 Page 11 of 11
Part 1: Overview
Owner’s Manual Rev 1.0 Page 12 of 12
1. Introduction
1.1 Target Users
TT4031 (SE-GM29) modems are designed to be integrated into machinemachine or man-to-machine communications applications. They are intended
to be used by manufacturers, system integrators, applications developers and
developers of wireless communications equipment.
1.2 Prerequisites
It is assumed that the person integrating the TT4031 (SE-GM29) 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 TT4031 (SE-GM29) and
includes a list of abbreviations used in the manual.
Part 2 - Integrating the Modem
This section describes each of the signals available on the TT4031 (SE-GM29)
modem, 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.
Owner’s Manual Rev 1.0 Page 13 of 13
Part 3 - Using AT Commands
This section lists all the AT commands relevant to the TT4031 (SE-GM29),
including their associated parameters. The purpose of part 3 is to give you
detailed information about the function of each command in the AT command
set.
Owner’s Manual Rev 1.0 Page 14 of 14
2. TT4031 (SE-GM29) Modem
2.1 Description
The dual band EGSM 900/1800 MHz TT4031 (SE-GM29) is a GSM/GPRS serial
modem. The modem is a powerful and flexible device that can be used in a
wide range of telemetry and telematics applications that rely on the remote
exchange of data, voice, SMS or faxes via the GSM cellular network.
Small and lightweight, the TT4031 (SE-GM29) has standard connectors and
an integral SIM card reader making it easy and quick to integrate. As well as
providing a standard RS232 serial communication interface the TT4031 (SEGM29) also has an audio interface allowing an analogue handset to be
connected. When the TT4031 (SE-GM29) is integrated into an external
application, a wireless communications system is created.
A typical end-to-end system consists of a micro controller in an external
application communicating, via the TT4031 (SE-GM29) modem, with a
remote terminal or host using the GSM network. The micro controller uses a
set of AT commands to control the modem, and to set up the end-to-end
communications link, via its 9-way RS232 serial interface.
TT4031 (SE-GM29) serial modems are intended to be used by manufacturers,
system integrators, application developers and developers of a wide range of
equipment and business solutions, typically in the following fields:
Security and alarms
Vending
Monitoring and control
Utilities
Fleet Management
2.2 Highlights
Dual band, EGSM 900/1800 MHz, GSM/GPRS serial modem
Flexible plug-and-play device
Data: GPRS, HSCSD, CSD, SMS
Voice: full rate, enhanced full rate, half rate
SMS: mobile-originated, mobile-terminated, cell broadcast
Fax: Group 3, Classes 1 & 2
Owner’s Manual Rev 1.0 Page 15 of 15
RS232 9-way serial interface
5 V - 32 V DC input
4-wire audio connection
Antenna connection (FME male)
FCC and PTCRB approved
2.3 TT4031 (SE-GM29) in a Communication System
Figure 2.1 illustrates the main blocks of a wireless communication system
using the TT4031 (SE-GM29). 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 TT4031 (SE-GM29)
modem plus SIM card. The modem 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
(TT4030)
Figure 2.1 Main Blocks in a Wireless System
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 TT4031 (SE-GM29) follow the recommendations
provided by ETSI (European Telecommunications Standards Institute) and
ITU-T.
Owner’s Manual Rev 1.0 Page 16 of 16
ETSI specifies a set of AT commands for controlling the GSM element of the
modem; these commands are supplemented by Sony Ericsson specific
commands.
To find out how to work with AT commands, see “Part 3: Using AT
Commands”.
Figure 2.2 illustrates the interface between the modem and the application.
The entire System Connector Interface is described in detail in “Electrical
Description”.
TE
(Application)
Power
and Signals
Audio
Serial data
RJ11
RJ9
MS
(TT4030)
DB9
Antenna
Connector
Figure 2.2 The Interface between the modem and the Application
ITU-T standards define TE and TA as DTE (Data Terminal
Equipment) and DCE (Data Circuit Terminating Equipment)
respectively.
Owner’s Manual Rev 1.0 Page 17 of 17
2.4 Main Features and Services
The modem performs a set of telecom services (TS) according to GSM
standard phase 2+, ETSI and ITU-T. The services and functions of the
modem are implemented by issuing AT commands over the RS232 serial
interface.
2.4.1 Types of Mobile Station
The TT4031 (SE-GM29) is a dual band serial modem with the GSM radio
characteristics shown in the table below.
TT4031 (SE-GM29) GSM 900 E-GSM900 GSM 1800
Frequency Range (MHz) TX: 890-915
RX: 935-960
Channel spacing 200 kHz 200 kHz
Number of channels 173 carriers *8 (TDMA)
GSM: channels 1 to 124
E-GSM: channels 975 to 1023
Modulation GMSK GMSK
TX Phase Accuracy < 5º RMS phase error (burst) < 5º RMS phase error (burst)
Duplex spacing 45 MHz 95 MHz
Receiver sensitivity at
antenna connector
Transmitter output power
at antenna connector
Automatic hand-over between GSM 900 and GSM 1800
< –102 dBm < –102 dBm
Class 4
2 W (33 dBm)
TX: 880-890
RX: 925-935
TX: 1710-1785
RX: 1805-1880
374 carriers *8 (TDMA)
DCS: channels 512 to 885
Class 1
1 W (30 dBm)
2.4.2 Short Message Service
The modem 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
Owner’s Manual Rev 1.0 Page 18 of 18
GSM network (for example, traffic reports). This feature is
network dependent.
SMS STATUS REPORT according to GSM 03.40.
SMS COMMAND according to GSM 03.40.
The maximum length of an SMS message is 160 characters when using 7bit encoding. For 8-bit data, the maximum length is 140 characters. The
modem supports up to 6 concatenated messages to extend this function.
2.4.3 Voice Calls
The TT4031 (SE-GM29) offers the capability of mobile originated and
mobile terminated voice calls, as well as supporting emergency calls.
Multiparty, call waiting and call deflection features are available. Some of
these features are network-operator specific.
For the inter-connection of audio, the modem offers a balanced 4-wire
analogue interface.
DTMF (Dual Tone Multi Frequency) is supported.
2.4.4 Data
The modem supports the following data protocols:
GPRS (General Packet Radio Service).
Modems are Class B terminals, which provide simultaneous
activation and attachment of GPRS and GSM services. TT4031
(SE-GM29) modems are GPRS class 8 (4+1) enabled devices,
which are capable of transmitting in one timeslot per frame (up
link), and receiving at a maximum of four timeslots per frame
(down link).
CSD (Circuit Switched Data).
TT4031 (SE-GM29) modems are capable of establishing a CSD
communication at 9.6 kbps.
HSCSD (High Speed Circuit Switched Data).
TT4031 (SE-GM29) supports HSCSD class 2 (2+1)
communication, with one timeslot per frame capacity in the up
link and two timeslots per frame capacity in the down link.
Owner’s Manual Rev 1.0 Page 19 of 19
2.4.5 Fax
The TT4031 (SE-GM29) allows fax transmissions to be sent and received by
commercial software installed on the application computer. Group 3 fax
Classes 1 and 2 are supported.
2.4.6 Supplementary Services
Call forwarding
Call hold, waiting and multiparty
Calling/called number identification
Advice of charge
USSD
Alternate line service
Customer service profile
Preferred networks
Operator selection
Network registration
Call barring
Call transfer
2.4.7 Serial Communication
The TT4031 (SE-GM29) enables an end-to-end communication path to be
established between the external telemetry/telematics application and a
remote terminal or host, via the GSM network. Once a path has been set
up, voice or data communication can take place. Serial data with flow
control according to the RS232 signalling protocol operates between the
modem and the external application.
Control of the TT4031 (SE-GM29) is by the external application, via the
RS232 serial interface, using a set of AT commands. The TT4031 (SEGM29) supports the full set of AT commands according to GSM 07.05 and
GSM 07.07. It also supports an extended set of Ericsson proprietary AT
commands to add extra functionality.
AT commands are used to operate the modem and have a broad range of
functions including:
configuring general parameters of the TT4031 (SE-GM29);
Owner’s Manual Rev 1.0 Page 20 of 20
setting up and controlling communications to and from the GSM
network;
configuring the modem to communicate across the RS232 serial
interface;
and obtaining GSM network status information.
For more detail on the AT commands supported by the TT4031 (SE-GM29)
see “Alphabetical Listing of AT Commands”.
2.4.8 Interfacing with the TT4031 (SE-GM29).
The TT4031 (SE-GM29) uses the following industry standard connectors to
interface with the external application and the GSM network;
RJ11 (plug-in power supply connector)
RJ9 (handset audio connector)
Integral SIM card reader
FME male (antenna connector)
Sub-D socket, 9 pin (RS232 serial port)
Owner’s Manual Rev 1.0 Page 21 of 21
2.5 Service and Support
To contact customer support please use the details below:
Customer Support
Topp Consumer Products
3055 NW 84
Miami, FL 33122
E-mail: telematic@toppcompanies.com
Information about Topp Consumer Products and its products is available
on the following web site:
://www.toppcompanies.com
http
th
Avenue
Owner’s Manual Rev 1.0 Page 22 of 22
3. Abbreviations
Abbreviation Explanations
AMR Adaptive Multi Rate
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
E-OTD Enhanced Observed Time Difference
ESD Electrostatic Discharge
ETSI European Telecommunication Standards Institute
FCC Federal Communications Commission
FR Full Rate
GPRS General Packet Radio Service
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
PDU Protocol Data Unit
PTCRB PCS Type Certification Review Board
RF Radio Frequency
RLP Radio Link Protocol
RTC Real Time Clock
SIM Subscriber Identity Module
Owner’s Manual Rev 1.0 Page 23 of 23
SMS Short Message Service
TA Terminal Adapter
TE Terminal Equipment
TS Telecom Services
Owner’s Manual Rev 1.0 Page 24 of 24
Part 2: Integrating the Modem
Owner’s Manual Rev 1.0 Page 25 of 25
1. Mechanical Description
1.1 Overview
The pictures below show the mechanical design of the TT4031 (SE-GM29)
along with the positions of the different connectors and mounting holes.
The TT4031 (SE-GM29) case is made of durable PC/ABS plastic.
Figure 1.1 TT4031 (SE-GM29) viewed from the left side
Figure 1.2 TT4031 (SE-GM29) viewed from the right side
Please note the following:
Mounting holes positioned at two of the corners make it possible
to securely bolt the modem into your application.
Keypad, display, microphone, speaker and battery are not part of
the modem.
Owner’s Manual Rev 1.0 Page 26 of 26
The SIM card is mounted in the modem.
The pins and electrical characteristics or the modem’s various
connectors are described in Electrical Description
Information about the antenna connector is found in
Antenna Connector
Owner’s Manual Rev 1.0 Page 27 of 27
1.2 Physical Dimensions
Measurements are given in millimeters. See also Technical Data
.
Owner’s Manual Rev 1.0 Page 28 of 28
2. Electrical Description
All electrical connections to the TT4031 (SE-GM29) are designed to meet
the standard air (4 kV) and contact (8 kV) discharge ESD tests, of
EN 301 489-1.
The modem uses the following industry standard connectors:
RJ11 6-way (power connector)
RJ9 4-way (handset connector)
SIM card reader
FME male coaxial jack (antenna connector)
Sub-D socket, 9 pin (RS232 serial port)
2.1 Power Connector
An RJ11 6-way connector, as shown and described below, serves as a
means of supplying and controlling d.c. power to the modem.
The supply voltage, VCC, required by the modem is in the range 5 V - 32 V
d.c. Application of the supply voltage does not switch the modem on. To do
so an additional active-high control signal, TO_IN, must be applied for
> 0.2 s .
A second active-high control signal, HR_IN, can be used to switch the
modem off when applied for 1 - 2 seconds, or can be used to perform a
hardware reset when applied for > 3.5 s.
TO_IN and HR_IN are referenced to GND (pin 6 on the connector).
VCC and GND are reverse polarity and overvoltage protected
Owner’s Manual Rev 1.0 Page 29 of 29
The power connector electrical characteristics are listed below:
Pin Signal Dir Limits Description
1 VCC I 5 - 32 V Positive power input
2 - - - No connection
3 HR_IN I –0.5 - 32 V Active high control line used to switch
off or reset the modem
VIH > 5 V, VIL < 2 V
Power off: 1 s < t < 2 s
Hard reset: t > 3.5 s
4 TO_IN I –0.5 - 32 V Active high control line used to switch
on the modem
> 5 V, VIL < 2 V
V
IH
Power on: t > 0.2 s
5 - - - No connection
6 GND I - Negative power (ground) input and
return path for TO_IN and HR_IN
2.2 Audio Connector
A 4-way RJ9 connector, as shown below, allows a telephone handset to be
plugged into the modem, giving access to the microphone and earpiece
signals. The connector may also be used to drive other analogue audio subsystems or devices.
Although the TT4031 (SE-GM29) is pre-configured to work with a range of
handsets, the audio interface is flexible and its performance can be
configured, using AT commands, to match a particular handset or audio
subsystem.
Owner’s Manual Rev 1.0 Page 30 of 30
Audio signal descriptions are listed below:
Pin Signal Dir Description
1 MICN I Microphone negative input
2 BEARN O Earpiece negative output
3 BEARP O Earpiece positive output
4 MICP I Microphone positive input
MICP and MICN are balanced differential microphone input signals. These
inputs are compatible with an electret microphone.
BEARP and BEARN are the speaker output signals. These are differential
mode outputs. The electrical characteristics are given in the table below.
Parameter Limit
Output level (differential) 4.0 Vpp
Output level (dynamic load = 32 Ω) 2.8 Vpp
Distortion at 1 kHz and maximum output level 5 %
Offset, BEARP to BEARN ± 30 mV
Ear-piece mute-switch attenuation 40 dB
The following table shows the ear piece impedances that can be connected
to BEARP and BEARN.
Ear piece model Impedance Tolerance
Dynamic ear piece [32 Ω+ 800 µH] // 100 pF ± 20 %
Dynamic ear piece [150 Ω+ 800 µH] // 100 pF ± 20 %
Piezo ear piece 1 kΩ+ 60 nF ± 20 %
Compliance with AMR may be required by certain
network operators.
Owner’s Manual Rev 1.0 Page 31 of 31
2.3 Antenna Connector
The antenna connector allows transmission of radio frequency (RF) signals
between the modem and an external customer-supplied antenna. The
modem is fitted with a 50 Ω FME male coaxial jack as shown below.
The table below shows the antenna electrical characteristics:
Parameter Limit Description
Nominal impedance
Output Power 2 Watt peak (Class 4) Extended GSM 900
Static Sensitivity Better than –102 dBm Extended GSM900
50 Ω (SWR better than
2.5:1)
1 Watt peak (Class 1) GSM 1800
Better than –102 dBm GSM 1800
Owner’s Manual Rev 1.0 Page 32 of 32
2.4 SIM Card Reader
The TT4031 (SE-GM29) is fitted with a SIM card reader designed for 3 V
and 5 V SIM cards. It is the flip-up type, which is lockable in the horizontal
position and is accessed through a removable panel as shown below
The SIM card reader includes a SIM presence switch. This ensures that
when a SIM card is inserted or removed while the TT4031 (SE-GM29) is
turned ON, it will reset.
Owner’s Manual Rev 1.0 Page 33 of 33
2.5 RS232 Serial Port
The modem supports a standard RS232 serial interface (EIA/TIA 574) via
its 9 pin Sub-D connector, shown below. In line with serial communication
terminology the TT4031 (SE-GM29) serial modem should be considered as
the data circuit-terminating equipment (DCE) and the external application
or computer as the data terminating equipment (DTE).
The electrical characteristics of the serial port signals are shown below:
Pin Signal Dir Voltage
levels
1 DCD O > +4 V
< –4 V
2 RD O > +4 V
< –4 V
3 TD I > 2 V
< 0.8 V
4 DTR I > 2 V
< 0.8 V
5 GND - 0 V Ground connection
6 DSR O > +4 V
< –4 V
7 RTS I > 2 V
< 0.8 V
8 CTS O > +4 V
< –4 V
Description
Data carrier detect
Received data
Transmitted data
Data terminal ready
Data set ready
Request to send
Clear to send
9 RI O > +4 V
< –4 V
Owner’s Manual Rev 1.0 Page 34 of 34
Ring indicator
2.5.1 Serial Data
The modem supports the standard data character format of 1 start bit, 8 bit
data, no parity plus 1 stop bit, in total 10 bits per character.
2.5.2 Serial Data Signals - RD, TD
The default baud rate is 9.6 kbps, however higher bit rates up to 460 kbps
are supported. At start-up the TT4031 (SE-GM29) transmits and receives
data at the default rate of 9.6 kbps in either standard AT mode or binary
mode (the first received data - AT or binary format - determines the
operating mode). When reprogramming, the transmission rate is
automatically negotiated by the programming application. Speeds up to
460 kbps are supported.
Serial Data From Modem (RD)
RD is an output signal that the modem uses to send data to the application.
Serial Data To Modem (TD)
TD is an input signal, used by the application to send data to the modem.
2.5.3 Control Signals - RTS, CTS, DTR, DSR, DCD, RI
RTS and CTS are capable of transmitting at 1/10 th of the data
transmission speed for data rates up to 460 kbps (byteoriented flow control
mechanism).
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 or
hardware control can be selected. Hardware flow is the default control.
The application must pull RTS low to communicate with the modem. The
modem will respond by asserting CTS low, indicating it is ready for
communication.
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.
Owner’s Manual Rev 1.0 Page 35 of 35
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.
The DTR line can also be used to switch on the modem when activated for
0.2 seconds. The DTR line must be deactivated prior to switching off the
modem to ensure it switches off (powers down) correctly.
An active DSR signal is sent from the modem to the application (DTE) to
confirm that a communications path has been established. DSR has two
modes of operation, which can be set using the AT command AT&S.
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.
Data Terminal Ready (DTR)
Data Set Ready (DSR)
Data Carrier Detect (DCD)
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.
2.6 Real Time Clock
The TT4031 (SE-GM29) contains a real time clock (RTC) to maintain
accurate timekeeping and to enable “timestamping” of messages.
The RTC is powered when d.c. power is connected to the modem AND the
modem is switched on. If the d.c. supply fails, a stored energy device
within the TT4031 (SE-GM29) provides back-up power to maintain the RTC
for at least 12 hours.
2.7 Software Updates
It is possible and sometimes necessary to update the TT4031 (SE-GM29)
software. Updates must be carried out by a Sony Ericsson approved
technician. Please contact your supplier for details (see “Service and
Support”).
Owner’s Manual Rev 1.0 Page 36 of 36
3. Operation
3.1 Switching On the Modem
There are two ways to switch on the modem, once power is applied.
either assert TO_IN high for > 0.2 s;
or activate the RS232 control line DTR, high for > 0.2 s.
The modem is fully operational after 4 seconds. Logging onto a network
may take longer than this and is outside the control of the modem.
The modem can be configured to start up at the time power is applied by
permanently tying power connector signals TO_IN (pin 4) and VCC (pin 1)
together. In this case DTR must be used to switch the modem on again
after it has been switched off or reset, while power is still applied.
3.2 Switching Off the Modem
There are two ways to switch off (power down) the modem as described
below:
either use the AT+CFUN command;
or assert HR_IN high for 1 - 2 seconds. A delay of up to 10 s is
experienced as the modem logs off the network.
Note!_ The DTR line must be deactivated prior to
switching off the modem to ensure the unit
switches off correctly.
3.3 Resetting the Modem
A full system reset, independent of the status of the software, may be
applied to the modem as follows:
assert HR_IN high for > 3.5 s.
Owner’s Manual Rev 1.0 Page 37 of 37
3.4 Operating States/LED
The modem has a green LED, as depicted below, which is used to indicate
various operating states. These states are described in following table.
Operating State LED Status
After switching on the modem On after 4 s
Switch off (Power down) or power removed Off
Standby or talk Flashing
No network, network search, no SIM card, no PIN
entered
Switch off (Power Down): DC power is applied but the
On
modem is switched OFF.
Standby: The TT4031 (SE-GM29) is switched ON and camped on to the
network. No call in progress.
Talk: The TT4031 (SE-GM29) is switched ON and a voice/data call is in
progress.
Owner’s Manual Rev 1.0 Page 38 of 38
4. Safety and Product Care
Please read the information in this section and the information in
Installation of the Modem
before starting your integration work.
4.1 Safety Instructions
PLEASE READ THESE SAFETY INSTRUCTIONS AND KEEP A COPY OF THEM.
Always ensure that use of the modem is permitted. The modem
may present a hazard if used in proximity to personal medical
electronic devices. As a rule, the modem must not be used in
hospitals, airports or planes.
Never use the modem at a gas station, refuelling point, blasting
area or in any other environment where explosives may be
present.
Operating the modem close to other electronic devices, such as
antennas, television sets, and radios may cause electromagnetic
interference.
This product is intended to be used with the antenna or other
radiating element at least 20 cm away from any part of the
human body. In applications where this rule cannot be applied,
the application designer is responsible for providing the SAR
measurement test report and declaration.
You are responsible for observing your country's safety
standards, and where applicable, the relevant wiring rules.
4.2 General Precautions
The TT4031 (SE-GM29) as a stand alone item is designed for indoor
use only. To use outside it must be integrated into a weatherproof
enclosure. Do not exceed the environmental and electrical limits as
specified in Technical Data
Avoid exposing the modem to lighted cigarettes, naked flames
or to extreme hot or cold temperature.
Never try to dismantle the modem yourself. There are no
components inside the modem that can be serviced by the user.
If you attempt to dismantle the modem, you may invalidate the
warranty.
Owner’s Manual Rev 1.0 Page 39 of 39
The TT4031 (SE-GM29) must not be installed or located where
the surface temperature of the plastic case may exceed 85ºC.
All cables connected to the TT4031 (SE-GM29) must be secured
or clamped, immediately adjacent to the modem's connectors,
to provide strain relief and to avoid transmitting excessive
vibration to the modem in the installation.
Ensure the d.c. cable, supplying power to the, TT4031 (SE-
GM29) does not exceed 3 metres. For longer distances please
contact Sony Ericsson (see “Service and Support”).
To protect power supply cables and meet the fire safety
requirements when the unit is powered from a battery or a high
current supply, connect a fast 1.25A fuse in line with the
positive supply.
Do not connect any incompatible component or product to the
TT4031 (SE-GM29).
Note! Sony Ericsson may refuse warranty claims
where evidence of product misuse is found.
4.3 SIM Card Precautions
Before handling the SIM card in your application, ensure that you
are not charged with static electricity. Use proper precautions to
avoid electrostatic discharges.
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 modem 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.
4.4 Antenna Precautions
If the antenna is to be mounted outside, consider the risk of
lightning. Follow the instructions provided by the antenna
manufacturer.
Owner’s Manual Rev 1.0 Page 40 of 40
Never connect more than one modem to a single antenna. The
modem can be damaged by radio frequency energy from the
transmitter of another modem.
Like any mobile station, the antenna of the modem 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 modem 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.
If the application containing the TT4031 (SE-GM29) uses an
antenna which is less than 20cm away from any part of the
user’s body, integrators are legally obliged to publish SAR
figures for the product. SAR testing is the responsibility of the
system integrator.
Even if SAR measurements are not required it is considered
good practice to insert a warning in any manual produced,
indicating it is a radio product and that care should be taken.
The TT4031 (SE-GM29) module is FCC approved for fixed and
mobile applications. If the final product after integration is
intended for portable use, a new application and FCC ID is
required.
Owner’s Manual Rev 1.0 Page 41 of 41
5. Installation of the Modem
This chapter gives you advice and helpful hints on how to integrate
the TT4031 (SE-GM29) into your application from a hardware
perspective. Please read the information given in Safety and Product
Care
and then the read the information in this section before starting your
integration work.
5.1 Where to Install the Modem
There are several conditions which need to be taken into consideration
when designing your application as they might affect the modem and its
function. They are:
5.1.1 Environmental Conditions
The modem 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.
5.1.2 Signal Strength
The modem 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 modem is to a radio
base station. You must ensure that the location at which you intend to use
the modem, is within the network coverage area.
5.4.5 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 Possible Communication Disturbances
When an application is completed, you can verify signal strength by issuing
the AT command AT+CSQ. See “AT+CSQ Signal Strength”.
Tip! Before installing the modem, use an ordinary mobile
telephone to check a possible location for it. In determining
the location for the modem and antenna, you should consider
signal strength as well as cable length
Owner’s Manual Rev 1.0 Page 42 of 42
5.1.3 Connection of Components to TT4031 (SE-GM29).
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
modem or equipment.
5.1.4 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 “Short Message Service”.
5.2 How to Install the Modem
5.2.1 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.
When the unit is powered from a battery or a high current supply,
connect a fast 1.25A fuse in line with the positive supply. This
protects the power cabling and modem.
5.2.2 Securing the modem
Before securing the modem take into account the amount of
additional space required for the mating connectors and cables that
will be used in the application.
Where access is restricted, it may be easier to connect all the cables
to the modem prior to securing it in the application.
Securely attach the TT4031 (SE-GM29) modem to the host
application using two 3 mm diameter pan-head screws of
appropriate length as shown below.
Owner’s Manual Rev 1.0 Page 43 of 43
Caution! Do not exceed a torque of 2.2 in lb (25 Ncm) when
tightening the fixings screws. Excessive torque applied to the
screws can crack the plastic case.
5.3 OEM Labeling
Where the TT4031 (SE-GM29) is to be incorporated into an end product it is
an FCC requirement that a label must be affixed to the outside of the end
product with a statement similar to the following: “This device contains TX
FCC ID: PY76220502-BV”.
5.4 Antenna
5.4.1 General
The antenna is the component in your system that maintains the radio link
between the network and the modem. 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.
Owner’s Manual Rev 1.0 Page 44 of 44
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 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.
5.4.2 Antenna Type
Make sure that you choose the right type of antenna for the modem.
Consider the following requirements:
the antenna must be designed for the dual frequency bands in
use: EGSM/GSM900/1800;
the impedance of the antenna and antenna cable must be 50 Ω;
the antenna output-power handling must be a minimum of 1 W;
the VSWR value should be less than 3:1 to avoid damage to the
modem.
5.4.3 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 50 cm.
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 modem.
The modem’s peak output power can reach 1 W. RF field strength varies with
antenna type and distance. At 10 cm from the antenna the field strength may
be up to 70 V/m and at 1m it will have reduced to 7 V/m.
5.4.4 The Antenna Cable
Use 50 Ω impedance low-loss cable and high-quality 50 Ω impedance
connectors (frequency range up to 2 GHz) 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.
Owner’s Manual Rev 1.0 Page 45 of 45
5.4.5 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.
Owner’s Manual Rev 1.0 Page 46 of 46
5.5 Attachments
The TT4031 (SE-GM29) has been FCC certified using a number of
attachments including:
1._AC-DC Power Adaptor with Customized DC Lead
(Model # PS001)
Input 100-240 Va.c., 50/60Hz, 2m mains lead
Output: 12 Vd.c. 1.25 A, 2 m d.c. lead with RJ11 connector. CE marked.
2._Tri-band GSM Antenna (GSM/PCN/1.9GHz)
(Model # ANT016)
Covert fit spider patch antenna, self-adhesive pad, 0 dBi, 2 m RG174 cable
with FME female connector.
Please contact Topp Group, Inc. for product availability and placing orders.
Owner’s Manual Rev 1.0 Page 47 of 47
6. Technical Data
Data Features
CSD Up to 9.6 kbps
HSCSD (2+1) Up to 19.2 kbps
GPRS Class B (4+1)
- P channels
- Coding schemes CS1 - CS4
GSM 07.10 multiplexing protocol
85.6 kbps (subject to network support and
terminal location)
Short Message Service Features
SMS Text and PDU
Point to point (MT/MO)
Cell broadcast
concatenation of up to 6 SMS
Voice Features
Full Rate, Enhanced Full Rate and Half Rate
Dual Tone Multi Frequency (DTMF
AMR currently unsupported
(FR/EFR/HR)
Fax Features
Group 3
Class 1 and 2
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
Owner’s Manual Rev 1.0 Page 48 of 48
Power Supply
Supply voltage range 5 - 32 V d.c.
Power Consumption
Supply voltage 5V 12V 32V Vdc
Power Down Mode
Av Max Av Max Av Max
5 15 5 15 20 50 µA
Standby Mode (typical)
Frequency Paging rate Av Peak Av Peak Av Peak
900 MHz 2 26 110 9 43 6 20 mA
1800 MHz 2 26 120 9 45 6 19 mA
Talk Mode (typical)
Frequency Power Level Av Peak Av Peak Av Peak
900 MHz 5 220 1230 90 520 40 200 mA
1900 MHz 0 170 960 70 350 30 140 mA
Note! Power Down Mode: DC power is applied but the modem
is switched OFF.
Standby Mode: The TT4031 (SE-GM29) is switched ON and camped on to the
network. No call in progress.
Talk Mode: The TT4031 (SE-GM29) is switched ON and a voice/data call is in
progress.
The power consumption during transmission in Talk Mode is measured at
maximum transmitted power.
The power consumption in Standby Mode is measured at the maximum
paging rate.
Owner’s Manual Rev 1.0 Page 49 of 49
Radio Specifications
Frequency range TT4031 (SE-GM29): EGSM 900 MHz and 1800
MHz (dual band)
Maximum RF output
power
Antenna impedance 50 Ω
Static sensitivity Better than –102 dBm
E-OTD Currently unsupported in TT4031 (SE-GM29)
2 W (900 MHz) and 1 W (1800 MHz)
Audio Specifications
Parameter Limit
Output level (differential) ≥4.0 Vpp
Output level (dynamic load = 32 ) ≥2.8 Vpp
Distortion at 1 kHz and maximum output level ≤ 5 %
Offset, BEARP to BEARN ± 30 mV
Ear-piece mute-switch attenuation ≥40 dB
Ear piece model Impedance Tolerance
Dynamic ear piece [32 Ω+ 800 µH] // 100 pF ± 20 %
Dynamic ear piece [150 Ω+ 800 µH] // 100 pF ± 20 %
Piezo ear piece 1 kΩ+ 60 nF ± 20 %
SIM Card Reader
Voltage type Support for 3 V and 5 V SIM cards
Electrical Connectors and LED
Plug-in power supply
connector
Handset audio connector RJ9 4-way
Antenna connector FME male
RS232 port Sub-D socket, 9 pin
LED Green
RJ11 6-way
Owner’s Manual Rev 1.0 Page 50 of 50
Mechanical Specification
Length 77.4 mm
Width 66.4 mm
Height 26.2 mm
Weight < 130 g
Environmental specifications
Operating temperature
range
–25 °C to +55 °C
Storage temperature
range
Relative humidity 5 - 95 %, non-condensing
Stationary vibration,
sinusoidal
Stationary vibration,
random
Non-stationary vibration,
including shock
Bump Acceleration: 250 m/s²
Free fall transportation 1.2 m
Rolling pitching
transportation
–40 °C to +85 °C
Displacement: 7.5 mm
Acceleration amplitude: 20 m/s² and 40 m/s²
Frequency range: 2-8 Hz, 8-200 Hz, 200-500
Hz
Acceleration spectral density (m²/s²):
0.96, 2.88, 0.96
Frequency range:
5-10 Hz, 10-200 Hz, 200-500 Hz, 60 min/axis
Shock response spectrum I, peak acceleration:
3 shocks in each axis and direction;
300 m/s², 11 ms
Shock response spectrum II, peak acceleration:
3 shocks in each axis and direction;
1000 m/s², 6 ms
Angle: ±35 degrees; period: 8 s
Static load 10 kPa
Low air pressure/high air
pressure
70 kPa/106 kPa
Owner’s Manual Rev 1.0 Page 51 of 51
Certification
FCC Certification Part 15
Approved to PTCRB according to NAPRD.03 and GSM 3GPP TS 51.010-1
Part 22
Part 24
Owner’s Manual Rev 1.0 Page 52 of 52
7. FCC Certificate
Owner’s Manual Rev 1.0 Page 53 of 53
Part 3: Using AT Commands
Owner’s Manual Rev 1.0 Page 54 of 54
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 modem.
Using AT commands, the following actions are possible:
Control of DCE
GPRS
Call control
Supplementary Service
SIM application tool kit
The TT4031 (SE-GM29) 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 modem. 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 TT4031
(SE-GM29), 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.
<command> The name of the command that is to be entered.
<parameter> The parameter values that are defined for a certain
command.
<CR> The command line is terminated by the Carriage Return
(or Enter key) or ATS3 command.
<LF> Line feed character or ATS4 command.
Owner’s Manual Rev 1.0 Page 55 of 55
< > The term enclosed in angle brackets is a syntactical
element. The brackets do not appear in the command
line.
[ ] 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: <err> and CMS
ERROR:<err> (see sections AT Response Syntax
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<command>[=][<parameter>]<OK>
Example!_ ATL=0<CR> (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.
Owner’s Manual Rev 1.0 Page 56 of 56
A version of the basic syntax is:
AT<command><parameter>
Extended Syntax Command
AT+<command>= [<parameter>]
AT*<command>=[<parameter>]
EXAMPLE! - AT+CFUN=0<CR> (powers down the modem)
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+<command>?
AT*<command>?
AT<command>?
Example!_ AT+CSCS?<CR> (show current character set)
<CR>“IRA”<CR>(information text response)
<CR>OK<CR>(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+<command>=?
AT*<command>=?
Example!_ AT+CPAS=?<CR> (shows supported values for the
response parameters)
<CR>CPAS: (0, 3, 4, 129, 130, 131)<CR> (supported values)
<CR>OK<CR>
Owner’s Manual Rev 1.0 Page 57 of 57
(final result code)
If the indicated <parameter> is not recognized, the result code ERROR is
issued.
NOTE! - Possible responses are indicated both as
<command>:(list of supported<parameter>) 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.
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+<command>: <parameter >
–_AT*<command>: <parameter>
where the <parameter> is the result code value, note that a single space
character separates the colon character from the <parameter>.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 <CR>. 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, +<command> ERROR
followed by an error code.
Final result codes are:
Owner’s Manual Rev 1.0 Page 58 of 58
Value General meaning
OK Command executed, no errors
ERROR Invalid command or command line too long
NO DIALTONE No dialing 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.
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: <err> 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 <err> can be either
numerical or alphabetical, and is set with the +CMEE command.
The table below provides the numerical values for the parameter <err>.
<err> Description Syntax
0 Phone failure
1 No connection to phone
2 Phone -adaptor link reserved
3 Operation not allowed
4 Operation not supported
5 PH-SIM PIN required
10 SIM not inserted
11 SIM PIN required
12 SIM PUK required
13 SIM failure
Owner’s Manual Rev 1.0 Page 59 of 59
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
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.
Owner’s Manual Rev 1.0 Page 60 of 60
The syntax is as follows:
+CMS ERROR: <err>
Values for the <err> parameter are described in the following table.
<err> 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
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
Owner’s Manual Rev 1.0 Page 61 of 61
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.
Owner’s Manual Rev 1.0 Page 62 of 62
Call Control
2.1 AT+CPIN PIN Control
See 3.23, AT+CPIN PIN Control
2.2 ATA Answer Incoming Call
Description Command Possible Responses
Answer an incoming call ATA
Answer and initiate connection to an incoming call.
<text> Description
19200 Connected with data bit rate of 19200 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
•_ CONNECT
•_ CONNECT <text>
•_ NO CARRIER
•_ ERROR
•_ OK
Owner’s Manual Rev 1.0 Page 63 of 63
2.3 ATD Dial
Description Command Possible Responses
•_ Originate a call and
dial the phone
number specified in
the command as
<dial_string>
or
•_ Do a network detect
Dial the phone number
stored in the mobile
phone which is located
by the index <I>
Dial the phone number
stored in the SIM card
which is located by the
index <I>
Dial the phone number
stored in the Last dialled
number list on the SIM
card, which is located by
the index <I>
The most recently
dialled number is
assumed to have
<I>="1"
Redial the last phone
number dialled.
Ericsson specific
ATD<dial_string>[;]
ATD>ME<I>[;]
ATD>SM<I>[;]
ATD>LD<I>[;]
ATDL[;] ...
•_ CONNECT
•_ CONNECT <text>
•_ NO CARRIER
•_ ERROR
•_ NO DIAL TONE
•_ BUSY
•_ OK
•_ CONNECT
•_ CONNECT <text>
•_ NO CARRIER
•_ ERROR
•_ NO DIAL TONE
•_ BUSY
•_ OK
•_ CONNECT
•_ CONNECT <text>
•_ NO CARRIER
•_ ERROR
•_ NO DIAL TONE
•_ BUSY
•_ OK
•_ CONNECT
•_ CONNECT <text>
•_ NO CARRIER
•_ ERROR
•_ NO DIAL TONE
•_ BUSY
•_ OK
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.
Owner’s Manual Rev 1.0 Page 64 of 64
“
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 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.
<dial_string> Description
0 1 2 3 4 5 6 7
8 9 * # +”
W The W modifier is ignored but is included only for
, The comma modifier is ignored but is included only for
T The T modifier is ignored but is included only for
P The P modifier is ignored but is included only for
Valid characters for origination
compatibility purposes
compatibility purposes
compatibility purposes
compatibility purposes
<Final Result
Code>
CONNECT If connection is successfully established, only valid for
CONNECT
<text>
NO CARRIER Unable to establish a connection or the connection
ERROR An unexpected error occurred while trying to establish
Description
data connections
If connection is successfully established, only valid for
data connections
attempt was aborted by the user
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
<text> Description
19200 Connected with data bit rate of 19200 bits/s (HSCSD)
Owner’s Manual Rev 1.0 Page 65 of 65
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
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 ATO Return to Online Data Mode
Description Command Possible Responses
Return to on-line data
mode
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.
<value> Description
ATO[<value>]
•_ CONNECT
•_ CONNECT <text>
•_ NO CARRIER
•_ ERROR
0 Return to on-line data state from on-line command
2.6 ATP Select Pulse Dialing
Description Command Possible Responses
Select pulse dialing ATP OK
Show if the command is
supported?
Owner’s Manual Rev 1.0 Page 66 of 66
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.
2.7 ATT Select Tone Dialing
Description Command Possible Responses
Select tone dialing 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.
2.8 ATX Call Progress Monitoring Control
Description Command Possible Responses
Set call progress
monitoring control
Read the current setting ATX? X: <n>
Show if the command is
supported?
Defines if the dial-tone detection and busy-tone detection are to be used
during a call set-up.
ATX=[<n>] or
ATX[<n>]
ATX=? X: (list of supported
•_ OK
•_ ERROR
<n>s)
<n> Description
0 Body and dial tone detection off. No line speed reported
on connection
1 Body and dial tone detection off. Report line speed on
connection
2 Busy detection on and dial tone detection off. Report line
speed on connection
3 Busy detect off and dial tone on. Report line speed on
connection
4 Busy detect and dial tone detection on. Report line speed
on connection. Default value
Owner’s Manual Rev 1.0 Page 67 of 67
NOTE! - If there is no network available the <n>
parameter will decide if “NO DIALTONE” or “NO
CARRIER” will be returned. If the call recipient is
busy, the <n> parameter will decide if “BUSY” or
“NO CARRIER” will be returned.
2.9 AT+CHUP Hang up Call
Description Command Possible Responses
Request hang-up AT+CHUP
Show if the commands
is supported
AT+CHUP=?
•_ OK
•_ ERROR
•_ 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.
2.10 AT+CMOD Call Mode
Description Command Possible Responses
Request Call Mode AT+CMOD=[<mode>]
Shows the current
setting
Show if the command is
supported
AT+CMOD?
AT+CMOD=?
•_ OK
•_ ERROR
•_ +CMOD: <mode>
•_ OK
•_ ERROR
•_ +CMOD: (list of
supported <mode>s)
•_ OK
•_ ERROR
Selects the call mode of further dialling 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.
Owner’s Manual Rev 1.0 Page 68 of 68
When single mode is selected the call originating and hang-up procedures are
similar to procedures specified in ITU-T Recommendations V.25ter, T.31 and
T.32. In GSM there can be voice followed by data (refer to GSM 02.02),
alternating voice/data (refer to GSM 02.02) and alternating voice/fax calls
(refer to GSM 02.03).
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
0 Single mode. Default value.
In order to avoid accidental originating or answering of
alternating calls is <mode> 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
Note!_
2.11 AT+CVHU Voice Hang-Up
Description Command Possible Responses
Set Command +CVHU=[<mode>]
Read command +CVHU?
Test if the command is
supported
+CVHU=? +CVHU: (list of
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! - When <mode>=2, this command must be
viewed in conjunction with the V.25ter command &D, or
&D will be ignored.
•_ +CME ERROR: <err>
•_ OK
•_ +CVHU: <mode>
•_ +CME ERROR: <err>
supported <mode>s)
Owner’s Manual Rev 1.0 Page 69 of 69
<mode> Description
0 “Drop DTR” ignored but OK response given. ATH
disconnects
1 “Drop DTR” and ATH ignored but OK response given
2 “Drop DTR” behavior according to &D setting. ATH
disconnects. Default value
Note!_
2.12 AT+VTS DTMF and Tone Generation
Description Command Possible Responses
Request transmission of
DTMF tone(s)
Show if the command is
supported
AT+VTS=<DTMF> OK
ERROR
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.
NOTE! - The AT+VTS command is used only during a
voice call.
<DTMF> Description
ASCII character
string
An ASCII character string with entries in the set 0-9, #,
*, A-D separated by commas. Each entry is interpreted
as a single ASCII character.
Example: The string “8,9” sends two DTMF tones, “8”
followed by “9”
Owner’s Manual Rev 1.0 Page 70 of 70
Control and Status
3.1 ATQ Result Code Suppression
Description Command Possible Responses
Set Result Code
Suppression
Read the current setting ATQ? Q: <value>
Show if the command is
supported
ATQ[=]<value>
ATQ=? Q: (list of supported
•_ OK
•_ ERROR
<value>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.
<value> Description
0 DCE transmits result codes. Default value
1 Result codes are suppressed and not transmitted
3.2 ATS0 Automatic Answer Control
Description Command Possible Responses
Automatic answer
control
Read the current
setting
Show if the command
is supported
ATS0=[<rcnt>]
ATS0? <rcnt>
ATS0=? S0: (list of supported
•_ OK
•_ ERROR
<rcnt>s)
Defines the automatic answering feature of the modem. A non-zero value
specifies the number of rings before the call is answered.
Note! Call is always answered in the current fax class,
regardless of whether the incoming call is voice, data, or
fax.
Owner’s Manual Rev 1.0 Page 71 of 71
<rcnt> Description
0 Disable automatic answer. Default value
1-7 Answer after the specified number of rings
3.3 ATS2 Escape Sequence Character
Description Command Possible Responses
Set escape sequence
character
Read the current setting ATS2 <esc>
Show if the command is
supported
ATS2=[<esc>]
ATS2=? S2: (list of supported
•_ OK
•_ ERROR
<esc>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.
<esc> Description
43 Escape sequence character. Default value
0 to 255 Escape sequence character
NOTE! - If the <esc> parameter is set to a value in the
range of 128-255, the escape sequence detection is
disabled.
Owner’s Manual Rev 1.0 Page 72 of 72
3.4 ATS3 Command Line Termination Character
Description Command Possible Responses
Set Command Line
Termination Character
Read the current setting ATS3? <value>
Show if the command is
supported
ATS3=<value>
ATS3=? S3: (list of supported
•_ OK
•_ ERROR
<value>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.
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 <CR> character (IA5 0/13), but the result code issued uses the
character with the ordinal value 30 (IA5 2/14) in place of the <CR>.
<value> Description
13 Command line termination character, Default value
0 to 127 Command line termination character
3.5 ATS4 Response Formatting Character
Description Command Possible Responses
Set Response
Formatting Character
Read the current setting ATS4? <value>
Show if the command is
supported
Owner’s Manual Rev 1.0 Page 73 of 73
ATS4=<value>
ATS4=? S4: (list of supported
•_ OK
•_ ERROR
<value>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.
<value> Description
10 Formatting character. Default value
Note: ASCII character 10 is equivalent to <LF>
0 to 127 Formatting character
3.6 ATS5 Command Line Editing Character (BACKSPACE)
Description Command Possible Responses
Request Command Line
Editing Character
Shows the current
setting
Show if the command is
supported
ATS5=<value>
ATS5? <value>
ATS5=? S5: (list of supported
•_ OK
•_ ERROR
<value>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.
<value> Description
8 Line editing character. Default value
0 to 127 Line editing character
3.7 ATS6 Blind Dial Delay Control
Description Command Possible Responses
Owner’s Manual Rev 1.0 Page 74 of 74
Blind dial delay control ATS6=[<dly>] OK
Read the current setting ATS6? <dly>
Show if the command is
supported
ATS6=? S6: (list of supported
Included for compatibility. No functionality
<dly> Description
2 Wait two seconds before blind dialing. Default value
2-255 Number of seconds to wait before blind dialing
3.8 ATS7 Connection Completion Timeout
Description Command Possible Responses
Set connection
completion timeout
Read the current setting ATS7? <tmo>
ATS7=[<tmo>]
<dly>s)
•_ OK
•_ ERROR
Show if the command is
supported
ATS7=? S7: (list of supported
<tmo>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.
<tmo> Description
50 Timeout value in seconds. Default value
1-255 Timeout value in seconds
Owner’s Manual Rev 1.0 Page 75 of 75
ATS8 Comma Dial Modifier Delay Control
Description Command Possible Responses
Set Comma Dial
Modifier Delay Control
Read the current
setting.
Show if the command is
supported.
ATS8=[<dly>]
ATS8? <dly>
ATS8=? S8: (list of supported
•_ OK
•_ ERROR
<dly>s)
Included for compatibility. No functionality
<dly> Description
2 The value of the dial modifier delay in seconds. Default value
1-255 The value of the dial modifier delay in seconds
3.10 ATS10 Automatic Disconnect Delay Control
Description Command Possible Responses
Set Automatic
Disconnect Delay
Control
Read the current setting ATS10? <val>
Show if the command is
supported
ATS10=[<val>]
ATS10=? S10: (list of supported
•_ OK
•_ ERROR
<val>s)
Included for compatibility. No functionality
<val> Description
2 Remains connected for two tenths of a second. Default value
1-254 Number of tenths of a second of delay
Owner’s Manual Rev 1.0 Page 76 of 76
3.11 AT*ECAM Ericsson Call Monitoring
Description Command Possible Responses
Set Call Monitoring on
or off
Read the current status
for Call Monitoring
Test if the command is
supported
AT*ECAM=<onoff>
AT*ECAM?
AT*ECAM=?
•_ OK
•_ +CME ERROR: <err>
•_ OK
•_ ERROR
•_ *ECAM: <onoff>
•_ +CME ERROR: <err>
•_ OK
•_ ERROR
•_ *ECAM: list of
supported <onoff>s
•_ +CME ERROR: <err>
•_ 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;
to make it possible for the TE to display call state information for
an ongoing call.
<onoff> Description
0 The call log function is disabled (off). Default value
1 The call log function is enabled (on)
•_
Examples
AT*ECAM?
*ECAM: 0
AT*ECAM=1
OK
Owner’s Manual Rev 1.0 Page 77 of 77
3.12 AT*EDST Ericsson Daylight Saving Time
Description Command Possible Responses
Set Daylight Saving
Time
Read current Daylight
Saving Time
Show if the command is
supported
AT*EDST=<dst>
AT*EDST?
AT*EDST=?
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.
•_ +CME ERROR: <err>
•_ OK
•_ ERROR
•_ *EDST: <dst>
•_ +CME ERROR: <err>
•_ OK
•_ ERROR
•_ *EDST: (list of
supported <dst>s)
•_ +CME ERROR: <err>
•_ OK
•_ ERROR
<dst> Description
0 Standard time
1 Daylight saving time, +1 hour
2 Daylight saving time, +2 hours
Note!_
3.13 AT*EMAR Ericsson Master Reset
Description Command Possible Responses
Owner’s Manual Rev 1.0 Page 78 of 78
Perform a master reset
in the MS
Shows if the command
is supported or not
AT*EMAR=<phone lock
code>
AT*EMAR=?
•_ +CME ERROR: <err>
•_ OK
•_ ERROR
•_ +CME ERROR: <err>
•_ 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.
<phone lock code> Description
String Security code (phone lock code) must be verified
before performing the master reset, see also
AT+CLCK
3.14 AT*EPEE Ericsson Pin Event
Description Command Possible Responses
Requests the MS to
inform when the PIN
code has been inserted
Test if the command is
supported
Read the current status
for PIN Code Request
AT*EPEE=<onoff>
AT*EPEE=?
AT*EPEE?
•_ +CME ERROR: <err>
•_ OK
•_ ERROR
•_ *EPEE: (list of
supported <onoff>s)
•_ +CME ERROR: <err>
•_ OK
•_ ERROR
•_ *EPEE: <onoff>
•_ +CME ERROR: <err>
•_ OK
•_ ERROR
The command requests the MS to report when the PIN code has been
inserted and accepted.
<onoff> Description
0 Request for report on inserted PIN code is not activated
(off). Default value
Owner’s Manual Rev 1.0 Page 79 of 79
1 Request for report on inserted PIN code is activated (on)
3.15 AT+CCLK Set Clock and Date
Description Command Possible Responses
Set the real time clock
of the ME
Show the current
setting
Show if the command is
supported
AT+CCLK=<time>
AT+CCLK?
AT+CCLK=?
•_ +CME ERROR: <err>
•_ OK
•_ ERROR
•_ +CCLK: <time>
•_ +CME ERROR: <err>
•_ OK
•_ ERROR
•_ OK
•_ ERROR
Sets the real time clock of the ME. If setting fails in an ME, error +CME
ERROR: <err> is returned. Read command returns the current setting of the
clock.
<time> Description
string type
value
Format is “yy/mm/dd,hh:mm:ss±zz”, where characters
indicate year (two last digits), month, day, hour,
minutes, seconds and time zone (indicates the difference,
expressed in quarters of an hour, between the local time
and GMT; range -47...+48), e.g. 6th of May 1994,
22:10:00 GMT+2 hours reads “94/05/06,22:10:00+08”
NOTE: If the ME does not support time zone information
then the three last characters of <time> are not returned
by +CCLK?
3.16 AT+CEER Extended Error Report
Description Command Possible Responses
Request an Extended
Error Report
Owner’s Manual Rev 1.0 Page 80 of 80
AT+CEER
•_ +CEER: <report>
•_ OK
•_ ERROR
Show if the command is
supported
AT+CEER=?
•_ OK
•_ ERROR
Causes the TA to return one or more lines of information text <report>.
Typically, the text will consist of a single line containing the failure
information given by the GSM network in text format.
<report> Description
characters The total number of characters, including line
terminators, in the information text shall not exceed
2041 characters.
Text shall not contain the sequence 0<CR> or OK<CR>
3.17 AT+CFUN Set Phone Functionality
Description Command Possible Responses
Set MS functionality AT+CFUN=<fun>
Show the current
setting
Show if the command
is supported
AT+CFUN?
AT+CFUN=?
•_ +CME ERROR: <err>
•_ OK
•_ +CFUN: <fun>
•_ +CME ERROR: <err>
•_ +CFUN: (list of
supported <fun>s)
•_ +CME ERROR: <err>
Selects the level of functionality <fun> in the MS.
"Full functionality" results in the highest level of power usage. It is possible to
activate all parts of the modem. Default ON state.
"Minimum functionality" results in minimum power usage. The modem is in a
powered OFF state. No functionality can be executed until the modem is
powered back ON.
Transitions between states are defined below.
Initial State New State Function
<fun> = 0 - Modem is off. No functionality
<fun> = 1 <fun> = 0 Modem was fully active. Active calls are hung
up and an IMSI detach is sent. The modem
then powers off
Owner’s Manual Rev 1.0 Page 81 of 81
<fun> Description
0 Minimum functionality. Modem is OFF
1 Full functionality. Modem is ON
3.18 AT+CIND Indicator Control
Description Command Possible Responses
Set Indicator Control AT+CIND=[<ind>
[,<ind>[,…]]]
Read the current
setting
Test if the command
is supported
AT+CIND?
AT+CIND=?
•_ +CME ERROR: <err>
•_ OK
•_ ERROR
•_ +CIND: <ind>,<ind>,…
•_ +CME ERROR: <err>
•_ OK
•_ ERROR
•_ +CIND: (<descr>,(list of
supported <ind>s)),
(<descr>,(list of supported
<ind>s)),…
•_ +CME ERROR: <err>
•_ OK
•_ ERROR
Used to set the values of ME indicators. <ind> value 0 means that the
indicator is off (or in state which can be identified as “off” state), 1 means
that indicator is on (or in a state which is more substantial than “off” state), 2
is more substantial than 1, and so on. If the indicator is a simple on/off style
element, it has values 0 and 1. The number of elements is ME specific. If the
ME does not allow setting of indicators or it is not currently reachable, +CME
ERROR: <err> is returned. If a certain indicator is not writable, it cannot be
set. If the parameter is an empty field, the indicator will keep the previous
value.
Test command returns pairs, where string value <descr> is a maximum 16
character description of the indicator and compound value is the allowed
values for the indicator. If ME is not currently reachable, +CME ERROR:
<err> is returned (refer to GSM 07.07).
<ind> Description
Owner’s Manual Rev 1.0 Page 82 of 82
Integer type Value shall be in range of corresponding <descr>
<descr> Description
“signal” Signal quality (0-5)
“service” Service availability (0-1)
“sounder” Sounder activity (0-1)
“message” Message received (0-1)
“call” Call in progress (0-1)
“roam” Roaming indicator (0-1)
“sms full” A short message memory storage in the MT has become
full (1), or memory locations are available (0); i.e. the
range is (0-1)
3.19 AT+CLAC List all available AT Commands
Command Possible Responses
+CLAC <AT Command1> [<CR> <LF> <AT Command2>[…]]
+CME ERROR: <err>
+CLAC=? +CME ERROR: <err>
Causes the ME to return one or more lines of AT commands. This command
has the same functionality as AT*.
NOTE! - This command only returns the AT commands
that are available to the user.
3.20 AT+CMEE Mobile Equipment Error
Description Command Possible Responses
Request GSM Mobile
Equipment Error Control
AT+CMEE=[<n>]
•_ OK
•_ ERROR
Read the command AT+CMEE?
Owner’s Manual Rev 1.0 Page 83 of 83
•_ +CMEE: <n>
•_ OK
•_ ERROR
Show if the command is
supported
AT+CMEE=?
•_ +CMEE: (list of
supported <n>s)
•_ OK
•_ ERROR
Disables or enables the use of result code +CME ERROR: <err> as an
indication of an error relating to the functionality of the ME. When enabled,
ME related errors cause +CME ERROR: <err> final result code instead of the
regular ERROR final result code. ERROR is returned normally when error is
related to syntax, invalid parameters, or TA functionality. For more
information, refer to “+CME ERROR (Mobile Equipment Error Code)”.
<n> Description
0 Disable +CME ERROR: <err> result code and use ERROR
instead. Default value
1 Enable +CME ERROR: <err> result code and use numeric
<err> values
2 Enable +CME ERROR: <err> result code and use verbose
<err> values
3.21 AT+CMER Mobile Equipment Event Reporting
Description Command Possible Responses
Set phone activity
status
Read the current
setting
Test if the
command is
supported
AT+CMER=[<mode>
[,<ind>[,<bfr>]]]
AT+CMER?
AT+CMER=?
•_ +CME ERROR: <err>
•_ OK
•_ ERROR
•_ +CMER:
<mode>,<ind>,<bfr>
•_ OK
•_ ERROR
•_ +CMER: (list of supported
<mode>s), (list of supported
<ind>s), (list of supported
<bfr>s)
•_ OK
•_ ERROR
Owner’s Manual Rev 1.0 Page 84 of 84
Enables or disables the sending of unsolicited result codes from ME to TE in
the case of key pressings, display changes, and indicator state changes.
<mode> controls the processing of unsolicited result codes specified within
this command. <bfr> controls the effect on buffered codes when <mode> 1,
2 or 3 is entered. If the ME does not support setting, +CME ERROR: <err> is
returned.
<mode> Description
0 Buffer unsolicited result codes in the TA; if TA result code
buffer is full, codes can be buffered in some other place
or the oldest ones can be discarded
3 Forward unsolicited result codes directly to the TE; TA-TE
link specific inband technique used to embed result codes
and data when TA is in on-line data mode
<ind> Description
0 No indicator event reporting
1 Indicator event reporting using result code +CIEV:
<ind>,<value>. <ind> indicates the indicator order
number (as specified for +CIND) and <value> is the new
value of indicator. Only those indicator events, which are
not caused by +CIND shall be indicated by the TA to the
TE
<bfr> Description
0 TA buffer of unsolicited result codes defined within this
command is cleared when <mode> 1...3 is entered
3.22 AT+CPAS Phone Activity Status
Description Command Possible Responses
Execute Phone Activity
Status
AT+CPAS[=<mode>]
•_ +CPAS: <pas>
•_ +CME ERROR <err>
•_ OK
•_ ERROR
Owner’s Manual Rev 1.0 Page 85 of 85
Test if the command is
supported
AT+CPAS=?
•_ +CPAS:
(list of supported
<pas>s)
•_ +CME ERROR <err>
•_ OK
•_ ERROR
Returns the activity status <pas> of the ME. It can be used to interrogate the
ME before requesting action from the phone.
When the command is executed without the <mode> argument, the
command returns <pas>-values from 0 to 128 (for supported values se table
1 below). When, on the other hand, the command is executed with the
<mode> argument set to 1, the command may return Ericsson specific
<pas> values from 129 to 255 (for supported values see the table below).
Test command returns values supported by the ME as a compound value:
refer to GSM 07.07.
<pas> Description
0 Ready (ME allows commands from TA/TE)
3 Ringing (ME is ready for commands from TA/TE, but the
ringer is active)
4 Call in progress (ME is ready for commands from TA/TE,
but a call is in progress)
129 In idle state, (operator name/clock/date). This state is a
sub-state to ‘ready’ (0) and has the following definition:
In Idle state, that is, operator, clock and date (is set)
shown on the display
No conversation or data call in progress
No sub-menus shown on the display
4 Only digits, clear, *, NO and # allowed in this mode,
not changing mode
130 Mobile oriented call in progress. This is a sub-state to
‘call in progress’
131 Mobile terminated call in progress. This is a sub-state to
‘call in progress’
<mode> Description
1 Allows the CPAS to return Ericsson specific <pas> values,
such as 129, 130 and 131
Owner’s Manual Rev 1.0 Page 86 of 86
3.23 AT+CPIN PIN Control
Description Command Possible Responses
Request PIN Control AT+CPIN=<pin>[,<new
pin>]
Show the current
setting
Show if the command is
supported
AT+CPIN?
AT+CPIN=?
•_ +CME ERROR:
<err>
•_ OK
•_ ERROR
•_ +CPIN: <code>
•_ +CME ERROR:
<err>
•_ OK
•_ ERROR
•_ +CME ERROR:
<err>
•_ +CPIN: (supported
<code>s)
•_ OK
•_ ERROR
Sends the password to the ME, which is necessary to make the ME
operational (SIM PIN, SIM PUK or PH-SIM). If the PIN is to be entered twice,
the TA autonomously repeats the PIN. If no PIN request is pending, no action
is taken towards the ME and an error message (+CME ERROR <err>) is
returned to the TE.
If the PIN required is PUK, the second pin is required. This second PIN,
<newpin>, is used to replace the old PIN in the SIM.
NOTE! - Commands which interact with the ME that are
accepted when the ME has a pending request for SIM
PIN, SIM PUK or PH-SIM are: +CGMI, +CGMM, +CGMR,
+CGSN, +CFUN, +CMEE +CPIN, L and M.
<pin>,<newpin> Description
string The range for the SIM PIN and the PH- SIM PIN is 4 -
8 digits. The SIM PUK consists of 8 digits
Note!_
<code> Description
READY ME is not pending for any password
Owner’s Manual Rev 1.0 Page 87 of 87
SIM PIN ME is waiting SIM PIN to be given
SIM PUK ME is waiting SIM PUK to be given
PH-SIM PIN ME is waiting PHone-to-SIM card password to be given
SIM PIN2 ME is waiting SIM PIN2 to be given. This <code> is
recommended to be returned only when the last
executed command resulted in PIN2 authentication
failure (i.e. +CME ERROR: 17); if PIN2 is not entered
correctly after the failure, it is recommended that ME
does not block its operation
SIM PUK2 ME is waiting SIM PUK2 to be given. This <code> is
recommended to be returned only when the last
executed command resulted in PUK2 authentication
failure (i.e. +CME ERROR:18); if PUK2 and new PIN2 are
not entered correctly after the failure, it is recommended
that ME does not block its operation.
BLOCKED The SIM cards is blocked for the user
Note!_
<err> Description
0 Phone failure
5 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
24 Text string too long
25 Invalid characters in text string
100 Unknown
Note!_
3.24 AT+CPWD Change Password
Description Command Possible Responses
Owner’s Manual Rev 1.0 Page 88 of 88
Request facility lock AT+CPWD=<fac>,
<oldpwd>,
<newpwd>
Show if the command is
supported
AT+CPWD=?
•_ +CME ERROR <err>
•_ OK
•_ ERROR
•_ +CPWD:
(<fac1>,<pwdlength1>),
(<fac2>,<pwdlength2>),
…
•_ +CME ERROR <err>
•_ OK
•_ ERROR
Sets a new password for the facility lock function defined by command
Facility Lock +CLCK.
Test command returns a list of pairs which present the available facilities and
the maximum length of their password.
<fac> Description
“PS” PH-SIM (lock PHone to SIM card) (ME asks password
when other than current SIM card inserted)
“SC” SIM (lock SIM card) (SIM asks password in ME power-up
and when this lock command issued)
“P2” SIM PIN2
“AO” BAOC (Barr All Outgoing Calls) (refer GSM 02.88 clause
1)
“OI” BOIC (Barr Outgoing International Calls) (refer GSM
02.88 clause 1)
“AI” BAIC (Barr All Incoming Calls) (refer GSM 02.88 clause
2)
“IR” BIC-Roam (Bar Incoming Calls when Roaming outside the
home country) (refer GSM 02.88 clause 2)
“OX” BOIC-exHC (Barr Outgoing International Calls except to
Home Country) (refer GSM 02.88 clause 1)
“AB” All Barring services (refer GSM 02.30)
“AG” All outGoing barring services (refer GSM 02.30)
“AC” All inComing barring services (refer GSM 02.30)
<oldpwd> Description
string type <oldpwd> shall be the same as password specified for
the facility from the ME user interface or with the change
password command, +CPWD
Owner’s Manual Rev 1.0 Page 89 of 89
<newpwd> Description
string type <newpwd> is the new password, maximum length of
password can be determined with <pwdlength>
<pwdlength> Description
Integer type Maximum length of the password for the facility
<err> Description
0 Phone failure
3 Operation not allowed
5 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
23 Text string too long
24 Invalid characters in text string
100 Unknown
101..255 Reserved by ETS
3.25 AT+CR Service Reporting Control
Description Command Possible Responses
Set Service Reporting
Control
Owner’s Manual Rev 1.0 Page 90 of 90
AT+CR=<mode>
•_ OK
•_ ERROR
Read current setting AT+CR?
Test if the command is
supported
AT+CR=?
•_ +CR: <mode>
•_ OK
•_ ERROR
•_ +CR: (list of
supported <mode>s)
•_ OK
•_ ERROR
Enables or disables display of intermediate bearer capability reports during
the handshake phase.
<mode> Description
0 Disable reporting. Default value
1 Enable reporting
Intermediate Result Codes:
+CR: <serv>
3.26 AT+CRC Cellular Result Code
Description Command Possible Responses
Set Cellular Result Code
option
Show the current
setting
Show if the command is
supported
Command controls whether or not;
AT+CRC=[<mode>]
AT+CRC?
AT+CRC=?
•_ OK
•_ ERROR
•_ +CRC: <mode>
•_ OK
•_ ERROR
•_ +CRC: (list of
supported <mode>s)
•_ OK
•_ ERROR
the extended format of incoming call indication;
or GPRS network request for PDP context activation;
or notification for VBS/VGCS calls is used.
Owner’s Manual Rev 1.0 Page 91 of 91
When enabled, an incoming call is indicated to the TE with unsolicited result
code +CRING: <type> instead of the normal RING.
Test command returns values supported by the TA as a compound value.
<mode> Description
0 Disables extended format
1 Enables extended format
Unsolicited Result Codes:
+CRING: <type>
3.27 AT+CSAS Save Settings
Description Command Possible Responses
Save Settings AT+CSAS[=<profile>]
Get available
profiles
AT+CSAS=?
•_ +CMS ERROR: <err>
•_ OK
•_ ERROR
•_ +CSAS: (list of supported
<profile>s)
•_ +CMS ERROR: <err>
•_ OK
•_ ERROR
Saves active message service settings to a non-volatile memory. A TA can
contain several settings profiles. Settings specified in commands Service
Centre Address +CSCA, Set Message Parameters +CSMP and Select Cell
Broadcast Message Types +CSCB (if implemented) are saved. Certain
settings may not be supported by the storage (e.g. SIM SMS parameters)
and therefore can not be saved.
Test command shall display the supported profile numbers for reading and
writing of settings.
<profile> Description
0..255 Manufacturer specific profile number where settings are
to be stored. Default value is 0
Owner’s Manual Rev 1.0 Page 92 of 92
3.28 AT+CSQ Signal Strength
Description Command Possible Responses
Execute Signal Strength AT+CSQ
Test if the command is
supported
AT+CSQ=?
•_ +CSQ: <rssi>,<ber>
•_ +CME ERROR <err>
•_ OK
•_ ERROR
•_ +CSQ: (list of
supported
<rssi>s),(list of
supported <ber>s)
•_ +CME ERROR <err>
•_ OK
•_ ERROR
Returns the received signal strength indication <rssi> and channel bit error
rate <ber> from the ME. Test command returns values supported by the TA
as compound values.
<rssi> Description
0 –113dBm or less
1 –111dBm
2..30 –109… –53dBm
31 –51dBm or greater
99 Not known or not detectable
<ber> Description
0..7 As RXQUAL values in the table in GSM 05.08 subclause
8.2.4
99 Not known or not detectable
3.29 AT+CTZU Automatic Time Zone Update
Description Command Possible Responses
Owner’s Manual Rev 1.0 Page 93 of 93
Enable and disable
automatic time zone
update via NITZ
Read current setting AT+CTZU?
Show if the command is
supported
AT+CTZU=<onoff>
AT+CTZU=?
•_ +CME ERROR: <err>
•_ OK
•_ ERROR
•_ +CTZU: <onoff>
•_ +CME ERROR: <err>
•_ OK
•_ ERROR
•_ +CTZU: (list of
supported <onoff>s)
•_ +CME ERROR: <err>
•_ OK
•_ ERROR
Enables and disables the automatic time zone update via NITZ. If setting fails
in an ME error, +CME ERROR <err> is returned.
<onoff> Description
0 The automatic time zone update is disabled (off).
Default value
1 The automatic time zone update is enabled (on)
Owner’s Manual Rev 1.0 Page 94 of 94
Audio
AT*E2EAMS and AT*E2APR are new commands that replace the funtionality
offered by the *EALR, *EAMS, *EARS and *ELAM commands. Use the new
commands in new applications. The old commands are included for
compatibility.
4.1 AT*E2EAMS Ericsson M2M Audio Profile Modification
Description Command Possible Responses
Request
operation
with audio
profile
Display set
profile
Show if the
command is
supported
AT*E2EAMS=
<op>[,<TxPGA>,
<RxPGA>,<SideToneGain>,
<AuxInGain>,<MicInGain>,
<TxAGC>,<Volume>,
<MaxVolume>,<MicPath>,
<SpkPath>,<TxPCM>,
<RxPCM>,<HFAlgorithm>,
<LocalAudio>,<TxGainLow>,
<MicVolt2V>,<SideTone>,
<NoiseRed>,<EchoCancel>,<
AnalogRing>,][,<val>]]
AT*E2EAMS?
AT*E2EAMS=?
•_ ERROR
•_ OK
•_ *E2EAMS: <TxPGA>,
<RxPGA>,
<SideToneGain>,
<AuxInGain>,
<MicInGain>,
<TxAGC>,<Volume>,
<MaxVolume>,
<MicPath>,<SpkPath>,
<TxPCM>,<RxPCM>,
<HFAlgorithm>,
<LocalAudio>,
<TxGainLow>,
<MicVolt2V>,
<SideTone>,<NoiseRed>,
<EchoCancel>,
<AnalogRing>
OK
•_ ERROR
•_ *E2EAMS:
(list of supported <op>s)
•_ ERROR
This command allows the modification and configuration of the current audio
profile. An audio profile is a set of data which uniquely defines the way in
which the audio paths, gains, DSP algorithms and switch setting are
Owner’s Manual Rev 1.0 Page 95 of 95
configured. There are several audio profiles available in non-volatile storage,
and the current profile can be modified by use of the AT*E2APR command.
The AT*E2EAMS command allows the user to:
configure the whole profile, specifying each audio parameter in a
comma separated list;
set a single parameter, given by its parameter number;
save the current profile to non-volatile memory under the current
profile number (see AT*E2APR).
The current audio settings can also be displayed by running the read
command AT*E2EAMS?
Default audio settings are given in AT*E2APR.
Abortability:
This command may not be aborted.
Refer to the diagram below to understand which parts of the audio circuit are
affected by the various parameters.
Figure 4.1 Audio diagram of the CODEC
<op> Description
0 Configure current profile (<pr1> to <pr21>)
Owner’s Manual Rev 1.0 Page 96 of 96
1 Set <TxPGA>
2 Set <RxPGA>
3 Set <SideToneGain>
4 Set <AuxInGain>
5 Set <MicInGain>
6 Set <TxAGC>
7 Set <Volume>
8 Set <MaxVolume>
9 Set <MicPath>
10 Set <SpkPath>
11 Set <TxPCM>
12 Set <RxPCM>
13 Set <HFAlgorithm>
14 Set <LocalAudio>
15 Set <TxGainLow>
16 Set <MicVolt2V>
17 Set <SideTone>
18 Set <NoiseRed>
19 Set <EchoCancel>
20 Set <AnalogRing>
255 Save current profile to non-volatile storage at current
profile number
<TxPGA>,
<RxPGA>
0 -5 dB PGA gain
1 -2.5 dB PGA gain
2 0 dB PGA gain
3 2.5 dB PGA gain
4
5
6
Description
5 dB PGA gain
7.5 dB PGA gain
–7.5 dB PGA gain
7
<SideToneGain> Description
Owner’s Manual Rev 1.0 Page 97 of 97
–10 dB PGA gain
0 10 dB
1 13 dB
2 16 dB
3 19 dB
4 22 dB
5 25 dB
<AuxInputGain> Description
0 MUTE
1 13 dB
2 34 dB
3 46 dB
<MicInputGain> Description
0 MUTE
1 13 dB
2 25 dB
3 34 dB
4 46 dB
<TxAGCGain> Description
0 0 dB
1 3 dB
2 6 dB
<Volume>,
<MaxVolume>
0 MUTE
1-9 Volume levels 1-9
<MicPath>,
<SpkPath>
0 OFF
1 MUTE
2 Internal (using microphone/speaker)
Description
Description
3 External (using ATMS/AFMS)
<TxPCM>,
<RxPCM>
Owner’s Manual Rev 1.0 Page 98 of 98
Description
0 13 bit PCM
1 16 bit PCM
<HFAlgorithm> Description
0 No handsfree
1 Advanced handsfree
2 Switching handsfree
3 No handsfree handheld
4 No handsfree external
<LocalAudio> Description
0 Local audio mode off
1 Local audio microphone/no speaker
2 Local audio no microphone/speaker
3 Local audio microphone/speaker
<TxGainLow> Description
0 Tx gain normal
1 Tx gain –7 dB
<MicVolt2V> Description
0 Microphone voltage at 2.5 V
1 Microphone voltage at 2 V
<SideTone>,
<NoiseRed>,
<EchoCancel>,
<AnalogRing>
0 OFF
1 ON
Description
Owner’s Manual Rev 1.0 Page 99 of 99
Examples
AT*E2EAMS=?
*E2EAMS=(0-21,255)
OK
Current default profile is 0:
AT*E2EAMS?
*E2EAMS: 2,2,3,2,3,2,5,9,3,3,0,1,0,0,0,1,1,1,1,1,1
OK
Sets current profile with these settings:
AT*E2EAMS=0,2,1,2,0,0,2,5,9,2,2,0,1,0,0,0,1,1,0,0,1,1
OK
Sets TxPGA gain to 0dB:
AT*E2EAMS=1,2
OK
Turns analog ringing off:
AT*E2EAMS=20,0
OK
Save current profile to currently loaded profile in non-volatile memory:
AT*E2EAMS=255
OK
4.2 AT*E2APR M2M Audio Profile Manipulation
Description Command Possible Responses
Request operation
with audio profile
AT*E2APR=
<op>[,<prnum1>
[,<prnum2>]]
•_ ERROR
•_ OK
•_ *E2APR: <TxPGA>,<RxPGA>,
<SideToneGain>,<AuxInGain>,
<MicInGain>,<TxAGC>,
<Volume>,<MaxVolume>,
<MicPath>,<SpkPath>,
<TxPCM>,<RxPCM>,
<HFAlgorithm>,<LocalAudio>,
<TxGainLow>,<MicVolt2V>,
<SideTone>,<NoiseRed>,
<EchoCancel>,<AnalogRing>
•_ OK
Owner’s Manual Rev 1.0 Page 100 of 100
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