Telit Wireless Solutions DE910-DUAL User manual

80392ST10102A Rev.2 –2012-07-03

DE910-DUAL AT commands reference guide
80392ST10102A Rev.2 –2012-07-03
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 2 of 261
PRODUCT
DE910-DUAL

DE910-DUAL AT commands reference guide
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SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
Notice
While reasonable efforts have been made to assure the accuracy of this document, Telit assumes
no liability resulting from any inaccuracies or omissions in this document, or from use of the
information obtained herein. The information in this document has been carefully checked and is
believed to be entirely reliable. However, no responsibility is assumed for inaccuracies or
omissions. Telit reserves the right to make changes to any products described herein and
reserves the right to revise this document and to make changes from time to time in content
hereof with no obligation to notify any person of revisions or changes. Telit does not assume
any liability arising out of the application or use of any product, software, or circuit described
herein; neither does it convey license under its patent rights or the rights of others.
It is possible that this publication may contain references to, or information about Telit products
(machines and programs), programming, or services that are not announced in your country.
Such references or information must not be construed to mean that Telit intends to announce
such Telit products, programming, or services in your country.
Copyrights
This instruction manual and the Telit products described in this instruction manual may be,
include or describe copyrighted Telit material, such as computer programs stored in
semiconductor memories or other media. Laws in the Italy and other countries preserve for Telit
and its licensors certain exclusive rights for copyrighted material, including the exclusive right
to copy, reproduce in any form, distribute and make derivative works of the copyrighted
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the Telit products described in this instruction manual may not be copied, reproduced,
distributed, merged or modified in any manner without the express written permission of Telit.
Furthermore, the purchase of Telit products shall not be deemed to grant either directly or by
implication, estoppel, or otherwise, any license under the copyrights, patents or patent
applications of Telit, as arises by operation of law in the sale of a product.
Computer Software Copyrights
The Telit and 3rd Party supplied Software (SW) products described in this instruction manual
may include copyrighted Telit and other 3rd Party supplied computer programs stored in
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and other 3rd Party supplied SW certain exclusive rights for copyrighted computer programs,
including the exclusive right to copy or reproduce in any form the copyrighted computer
program. Accordingly, any copyrighted Telit or other 3rd Party supplied SW computer programs
contained in the Telit products described in this instruction manual may not be copied (reverse
engineered) or reproduced in any manner without the express written permission of Telit or the
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either directly or by implication, estoppel, or otherwise, any license under the copyrights,
patents or patent applications of Telit or other 3rd Party supplied SW, except for the normal
non-exclusive, royalty free license to use that arises by operation of law in the sale of a product.

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Usage and Disclosure Restrictions
License Agreements
The software described in this document is the property of Telit and its licensors. It is furnished
by express license agreement only and may be used only in accordance with the terms of such
an agreement.
Copyrighted Materials
Software and documentation are copyrighted materials. Making unauthorized copies is
prohibited by law. No part of the software or documentation may be reproduced, transmitted,
transcribed, stored in a retrieval system, or translated into any language or computer language,
in any form or by any means, without prior written permission of Telit
High Risk Materials
Components, units, or third-party products used in the product described herein are NOT fault-
tolerant and are NOT designed, manufactured, or intended for use as on-line control equipment
in the following hazardous environments requiring fail-safe controls: the operation of Nuclear
Facilities, Aircraft Navigation or Aircraft Communication Systems, Air Traffic Control, Life
Support, or Weapons Systems (High Risk Activities"). Telit and its supplier(s) specifically
disclaim any expressed or implied warranty of fitness for such High Risk Activities.
Trademarks
TELIT and the Stylized T Logo are registered in Trademark Office. All other product or service
names are the property of their respective owners.
Copyright © Telit Communications S.p.A. 2012.

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1. Introduction ......................................................................................................................7
1.1. Scope.................................................................................................................................... 7
1.2. Audience .............................................................................................................................. 7
1.3. Contact Information, Support ............................................................................................. 7
1.4. Document Organization ...................................................................................................... 7
1.5. Text Conventions................................................................................................................. 8
1.6. Related Documents ............................................................................................................. 8
2. Overview ...........................................................................................................................9
2.1. About the document............................................................................................................ 9
3. AT COMMANDS..............................................................................................................10
3.1. Definitions.......................................................................................................................... 10
3.2. AT Command Syntax......................................................................................................... 11
3.2.1. String Type Parameters................................................................................................................. 11
3.2.2. Command Lines............................................................................................................................. 12
3.2.2.1. ME Error Result Code - +CME ERROR: <err> ......................................................................... 14
3.2.2.2. Message Service Failure Result Code - +CMS ERROR: <err>................................................ 15
3.2.3. Information Responses and Result Codes.................................................................................... 18
3.2.4. Command Response Time-Out..................................................................................................... 19
3.2.5. Command Issuing Timing.............................................................................................................. 20
3.3. Storage............................................................................................................................... 22
3.3.1. Factory Profile and User Profiles................................................................................................... 22
3.4. AT Commands Availability Table...................................................................................... 24
3.5. AT Commands References ............................................................................................... 31
3.5.1. Command Line General Format.................................................................................................... 31
3.5.1.1. Command Line Prefixes ............................................................................................................ 31
3.5.2. General Configuration Commands................................................................................................ 32
3.5.3. Hayes Compliant AT Commands .................................................................................................. 33
3.5.3.1. Generic Modem Control............................................................................................................. 33
3.5.3.2. DTE - Modem Interface Control................................................................................................. 40
3.5.3.3. Call Control................................................................................................................................ 49
3.5.3.4. Modulation Control..................................................................................................................... 53
3.5.3.5. Compression Control................................................................................................................. 54
3.5.3.6. Break Control............................................................................................................................. 55
3.5.3.7. S Parameters............................................................................................................................. 56
3.5.3.8. Error Control .............................................................................................................................. 61
3.5.4. 3GPP TS 27.007 AT Commands................................................................................................... 63
3.5.4.1. General...................................................................................................................................... 63
3.5.4.2. Call Control................................................................................................................................ 65
3.5.4.3. Network Service Handling ......................................................................................................... 66
3.5.4.4. Mobile Equipment Control ......................................................................................................... 72
3.5.4.5. Mobile Equipment Errors........................................................................................................... 86
3.5.4.6. Voice Control ............................................................................................................................. 87

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3.5.4.7. Commands for Battery Charger................................................................................................. 88
3.5.5. Partially 3GPP TS 27.005 AT Commands for SMS and CBS....................................................... 89
3.5.5.1. General Configuration................................................................................................................ 89
3.5.5.2. Message Configuration.............................................................................................................. 91
3.5.5.3. Message Receiving and Reading.............................................................................................. 94
3.5.5.4. Message Sending and Writing................................................................................................. 104
3.5.6. Telit Custom AT Commands........................................................................................................ 112
3.5.6.1. General Configuration AT Commands .................................................................................... 112
3.5.6.2. Audio AT Commands............................................................................................................... 139
3.5.6.3. Multisocket AT Commands...................................................................................................... 159
3.5.6.4. FTP AT Commands................................................................................................................. 175
3.5.6.5. Single Socket AT Commands.................................................................................................. 178
3.5.6.6. E-mail Management AT Commands ....................................................................................... 198
3.5.7. GPS Commands.......................................................................................................................... 205
3.5.7.1. Stand Alone GPS Commands................................................................................................. 205
3.5.7.2. gpsOne Commands................................................................................................................. 211
3.5.8. Telit CDMA Custom AT Commands............................................................................................ 212
3.5.8.1. General Configuration AT Commands .................................................................................... 212
3.5.8.2. Authentication.......................................................................................................................... 222
3.5.8.3. Air interface and call processing.............................................................................................. 223
3.5.8.4. DATA Session AT commands................................................................................................. 227
3.5.8.5. AGPS AT commands............................................................................................................... 229
3.5.8.6. EVDO specific AT commands ................................................................................................. 229
3.5.8.7. Verizon Specific AT commands............................................................................................... 231
3.5.9. Qualcomm Proprietary AT Commands........................................................................................ 245
3.5.9.1. AT Commands for Mobile IP.................................................................................................... 245
3.6. AT parser abort................................................................................................................ 258
4. List of acronyms...........................................................................................................259
5. Document History ........................................................................................................261

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This document provides a detailed specification and a comprehensive listing of all AT commands
supported by the DE910-DUAL.
Readers of this document should be familiar with Telit modules and the means of controlling them using
AT Commands.
For general contact, technical support, to report documentation errors and to order manuals, contact
Telit’s Technical Support Center (TTSC) at:
TS-[email protected]
TS-NORTHAMERI[email protected]
TS-LATINAMERI[email protected]
TS-[email protected]
Alternatively, use:
http://www.telit.com/en/products/technical-support-center/contact.php
For detailed information about where you can buy Telit modules or for recommendations on accessories
and components visit:
http://www.telit.com
To register for product news and announcements or for product questions contact Telit’s Technical
Support Center (TTSC).
Our aim is to make this guide as helpful as possible. Keep us informed of your comments and suggestions
for improvements.
Telit appreciates feedback from the users of our information.
This document contains the following chapters:
Chapter 1: “Introduction”provides the scope for this document, target audience, contact and
support information, and text conventions.
Chapter 2: “Overview” discusses the goal of this document and implementation suggestions.

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Chapter 3: “AT Commands” The core of this reference guides.
Danger –This information MUST be followed or catastrophic equipment failure or bodily injury may
occur.
Caution or Warning –Alerts the user to important points about integrating the module., If these points
are not followed; the module and end user equipment may fail or malfunction.
Tip or Information –Provides advice and suggestions that may be useful when integrating the
module.
All dates are in ISO 8601 format, i.e. YYYY-MM-DD.
ETSI GSM 07.07 specification and rules
http://www.3gpp.org/ftp/Specs/archive/07_series/07.07/
ETSI GSM 07.05 specification and rules
http://www.3gpp.org/ftp/Specs/archive/07_series/07.05/
Hayes standard AT command set

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This document describes all AT commands implemented on the Telit wireless module DE910-
DUAL.

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The Telit wireless module family can be controlled via the serial interface using the standard AT
commands
1
. The Telit wireless module family is compliant with:
1. TIA/EIA/707-A.3 AT Command.
2. Partial Hayes standard AT command set.
3. Partially 3GPP 27.005 specific AT Commands for SMS (Short Message Service).
4. Partially ETSI 3GPP 27.007 specific AT Commands for controlling voice and
Phonebook.
Moreover, the Telit wireless module family supports Telit proprietary AT commands for
specific purposes.
The following is a description of how to use the AT commands with the Telit wireless module
family.
The following syntactical definitions apply:
<CR> Carriage return character, is the command line and result code terminator character,
which value, in decimal ASCII between 0 and 255,is specified within parameter S3. The
default value is 13.
<LF> Linefeed character, is the character recognized as line feed character. Its value, in
decimal ASCII between 0 and 255, is specified within parameter S4. The default value
is 10. The line feed character is output after the carriage return character if verbose
result codes are used (V1 option used). Otherwise, if numeric format result codes are
used (V0 option used) it will not appear in the result codes.
<...> Name enclosed in angle brackets is a syntactical element. They do not appear in the
command line.
[...] Optional sub parameter of a command or an optional part of TA information response is
enclosed in square brackets. Brackets themselves do not appear in the command line.
When the sub parameter is not given in AT commands which have a Read command,
new value equals to its previous value. In AT commands which do not store the values
of any of their sub parameters, and so do not have a Read command, called action type
commands, action should be taken on the basis of the recommended default setting of
the sub parameter.
1
AT is an ATTENTION command and is used as a prefix to other parameters in a string. The AT command combined with
other parameters can be set up in the communications package or typed in manually as a command line instruction.

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The syntax rules followed by the Telit implementation of both Hayes AT commands and
GSM/WCDMA commands are very similar to those of standard basic and extended AT
commands. There are two types of extended command:
-Parameter type commands. This type of command may be “set” (to store a value or
values for later use), “read” (to determine the current value or values stored), or “tested”
(to determine ranges of values supported). Each of them has a test command (trailing =?)
to give information about the type of its sub parameters; they also have a Read command
(trailing ?) to check the current values of sub parameters.
-Action type commands. This type of command may be “executed” or “tested”.
“executed“ to invoke a particular function of the equipment, which generally
involves more than the simple storage of a value for later use
“tested” to determine:
Whether or not the equipment implements the Action Command (in this case
issuing the corresponding Test command - trailing =? - returns the OK result
code), and, if sub parameters are associated with the action, the ranges of sub
parameters values that are supported.
Action commands do not store the values of any of their possible sub parameters.
In the case of a Telit command, the “read” action may be used for a specific purpose.
Moreover:
The response to the Test Command (trailing =?) may be changed in the future by
Telit to allow the description of new values/functionalities
If all the sub parameters of a parameter type command +CMD (or #CMD or
$CMD) are optional, issuing AT+CMD=<CR> (or AT#CMD=<CR> or
AT$CMD=<CR>) causes the OK result code to be returned and the previous values
of the omitted sub parameters to be retained.
A string either enclosed between quotes or not, is considered a valid string type parameter
input. According to V25 space characters are ignored on the command line and may be used
freely for formatting purposes unless they are embedded in numeric or quoted string
constants; therefore a string containing a space character has to be enclosed between quotes
to be considered a valid string type parameter.
A small set of commands requires always writing the input string parameters within quotes:
this is explicitly reported in the specific descriptions.

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A command line is made up of three elements: the prefix, the body and the termination
character.
The command line prefix consists of the characters “AT” or “at”, or, to repeat the
execution of the previous command line, the characters “A/” or “a/”.
The termination character may be selected by a user option (parameter S3), the default
being <CR>.
The basic structures of the command line are:
ATCMD1<CR> where AT is the command line prefix, CMD1 is the body of a
basic command (nb: the name of the command never begins with the character
“+”) and <CR> is the command line terminator character
ATCMD2=10<CR> where 10 is a sub parameter
AT+CMD1;+CMD2=, ,10<CR> These are two examples of extended commands
(nb: the name of the command always begins with the character “+”
2
). They are
delimited with semicolon. In the second command, the sub parameter is omitted.
+CMD1?<CR> This is a Read command for checking current sub parameter values
+CMD1=?<CR> This is a test command for checking possible sub parameter
values
These commands might be performed in a single command line as shown below:
ATCMD1 CMD2=10+CMD1;+CMD2=, ,10;+CMD1?;+CMD1=?<CR>
It is always preferable to separate into different command lines the basic commands and the
extended commands; furthermore, it is suggested to avoid placing several action commands
in the same command line because if one of them fails, an error message is received but it is
not possible to determine which one of them has failed the execution.
If command V1 is enabled (verbose responses codes) and all commands in a command line
have been performed successfully, result code <CR><LF>OK<CR><LF> is sent from the
TA to the TE, if sub parameter values of a command are not accepted by the TA or command
itself is invalid, or command cannot be performed for some reason, result code
<CR><LF>ERROR<CR><LF> is sent and no subsequent commands in the command line
are processed.
If command V0 is enabled (numeric response codes), and all commands in a command line
have been performed successfully, result code 0<CR> is sent from the TA to the TE. If sub-
parameter values of a command are not accepted by the TA or command itself is invalid, or
2
The set of proprietary AT commands differs from the standard commands because the name of each of them
begins with either “@”, “#”, “$” or “*”. Proprietary AT commands follow the same syntax rules as extended
commands

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command cannot be performed for some reason, result code 4<CR> and no subsequent
commands in the command line are processed.
In case of errors depending on ME operation, ERROR (or 4) response may be replaced by
+CME ERROR: <err> or +CMS ERROR: <err>.
NOTE: The command line buffer accepts a maximum of 80 characters. If this number is
exceeded none of the commands will be executed and TA returns ERROR.

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This is NOT a command; it is the error response to +Cxxx 3gpp TS 27.007 commands.
Syntax: +CME ERROR: <err>.
Parameter: <err> - error code can be either numeric or verbose (see +CMEE).The
possible values of <err> are reported in the table:
Numeric Format
Verbose Format
General errors:
0
phone failure
1
No connection to phone
2
phone-adaptor link reserved
3
operation not allowed
4
operation not supported
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
General purpose error:
100
unknown
560
cannot open socket
561
remote disconnected or time-out
562
connection failed
563
tx error
564
already listening
683
Active call state
684
RR connection Established
*(Values in parentheses are 3GPP TS 24.008 cause codes)

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This is NOT a command; it is the error response to +Cxxx SMS commands.
Syntax: +CMS ERROR: <err>
Parameter: <err> - numeric error code. The <err> values are reported in the table:
Numeric Format
Meaning
0-1
ME failure
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
320
Memory failure
321
Invalid memory index
322
Memory full
331
No network service
332
Network time-out
340
Invalid transaction ID
500
unknown error
The following values are IS-41D SMS cause codes:
Network Problems
Numeric Format
Meaning
0
Address vacant
1
Address translation failure
2
Network resource shortage
3
Network failure
4
Invalid teleservice id
5
Other network problem
6
Other network problem more first
Terminal Problems
Numeric Format
Meaning
32
No page response
33
Destination busy
34
No Acknowledgement
35
Network failure
36
SMS delivery postponed
37
Destination out of service
38
Destination no longer at this address

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39
Other Terminal problem
40
Other terminal problem more first
47
Other terminal problem more last
48
SMS delivery postponed more first
63
SMS delivery postponed more last
Radio Interface Problems
Numeric Format
Meaning
64
Radio if resource shortage
65
Radio if incompatible
66
Other radio if problem
67
Other radio if problem more first
95
Other radio if problem more last

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General Problems
Numeric Format
Meaning
96
Unexpected parameter size
97
SMS origination denied
98
SMS termination denied
99
Supplemental service not supported
100
SMS not supported
101
RESERVED 101
102
Missing expected parameter
103
Missing mandatory parameter
104
Unrecognized parameter value
105
Unexpected parameter value
106
User data size error
107
Other general problems
108
Other general problems more first
3GPP TS 27.007 CDMA Problems
Numeric Format
Meaning
148
Unspecified CDMA error
553
Context already activated
554
Stack already active
555
Activation failed
557
Cannot setup socket
558
Cannot resolve DN
603
Cannot resolve name
605
Cannot connect control socket
607
Not connected

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The TA response, in case of verbose response format enabled, for the previous examples
command line could be as shown below:
Information response to +CMD1?
<CR><LF>+CMD1: 2,1,10<CR><LF>
Information response to +CMD1=?
<CR><LF>+CMD1: (0-2),(0,1),(0-15)<CR><LF>
Final result code <CR><LF>OK<CR><LF>
Moreover, there are two other types of result codes:
result codes that inform about progress of TA operation (e.g. connection establishment
CONNECT)
Result codes that indicate occurrence of an event not directly associated with issuance of a
command from TE (e.g. ring indication RING).
Here are the basic result codes according to ITU-T V25Ter recommendation:
Result Codes
Numeric form
Verbose form
0
OK
1
CONNECT
2
RING
3
NO CARRIER
4
ERROR
6
NO DIALTONE
7
BUSY
8
NO ANSWER

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Every command issued to the Telit modules returns a result response if response codes are
enabled (default). The time needed to process the given command and return the response
varies, depending on the command type. Commands that do not interact with the network,
and involve only internal set up settings or readings typically have quicker response times
than commands that require network interaction.
In the table below are listed only the commands whose interaction with the network could
lead to long response timings. When not otherwise specified, timing is referred to set
command.
For phonebook and SMS writing and reading related commands, timing is referred to
commands issued after phonebook sorting is completed.
For DTMF sending and dialing commands timing is referred to module registered on network
(“AT+CREG?” answer is “+CREG: 0,1” or “+CREG: 0,5”).
Command
Estimated maximum time to get response (Seconds)
+CPBR
5 (single reading)
15 (complete reading of a 500 records full phonebook)
+CPBF
10 (string present in a 500 records full phonebook)
5 (string not present)
+CPBW
5
+VTS
5 (transmission of full “1234567890*#ABCD” string with no del
ay between tones, default duration)
+CSAS
5
+CRES
5
+CMGS
120 after CTRL-Z; 1 to get ‘>’ prompt
+CMSS
120 after CTRL-Z; 1 to get ‘>’ prompt
+CMGW
5 after CTRL-Z; 1 to get ‘>’ prompt
+CMGD
5 (single SMS cancellation)
25 (cancellation of 50 SMS)
+CMGR
5
+CMGL
100
D
40
A
5 (voice call)
H
2
+CHUP
2

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#TONE
5 (if no duration specified)
#EMAILD
60
#EMAILACT
150
#SEMAIL
210 ( context activation + DNS resolution )
#SKTD
140 (DNS resolution + timeout set with AT#SKTCT)
#SKTOP
290 ( context activation + DNS resolution + timeout set with AT#
SKTCT)
#QDNS
170
#FTPOPEN
500 (timeout set with AT#FTPTO, in case no response is receive
d from server)
#FTPCLOSE
500 (timeout set with AT#FTPTO, in case no response is receive
d from server)
#FTPTYPE
500 (timeout set with AT#FTPTO, in case no response is receive
d from server)
#FTPDELE
500 (timeout set with AT#FTPTO, in case no response is receive
d from server)
#FTPPWD
500 (timeout set with AT#FTPTO, in case no response is receive
d from server)
#FTPCWD
500 (timeout set with AT#FTPTO, in case no response is receive
d from server)
#FTPLIST
500 (timeout set with AT#FTPTO, in case no response is receive
d from server) + time to get listing
#FTPPUT
500 (timeout set with AT#FTPTO, in case no response is receive
d from server)
#SGACT
150
#SH
10
#SD
140 (DNS resolution + connection timeout set with AT#SCFG)
The chain Command -> Response shall always be respected and a new command must not be
issued before the module has finished sending all of its response result code (whatever it may
be).
This applies especially to applications that “sense” the OK text and therefore may send the
next command before the complete code <CR><LF>OK<CR><LF> is sent by the module.
It is advisable regardless to wait for at least 20ms between the end of the reception of the
response and issuing of the next AT command.