BenQ M32 User Manual

BenQ M32 GSM / GPRS Wireless Module

AT Command List

AT Command Rev. 0.5.0 Jun. 2004

COPYRIGHT BENQ Corporation This document contains proprietary technical information which is the property of BenQ Corporation and is issued in strict confidential and shall not be disclosed to others parties in whole or in parts without written permission of BenQ Corporation The documents contain information on a product, which is under development and is issued for customer evaluation purposes only. BENQ may make changes to product specifications at any time, without notice.

BenQ Corporation.

Networking & Communications BG

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http://www.benq.com

Contents

1. INTRODUCTION---------------------------------------------------------------------2

1.1 Introduction to Interface between TE and MS---------------------------------------------2

1.2 Initial the Test Environment --------------------------------------------------------------------- 5

1.3 How to Handle SMS messages----------------------------------------------------------------- 5

2. IMPLEMENTED AT COMMANDS FOR MS--------------------------------11

2.1 Commands specified by GSM REC.27.07--------------------------------------------------11

2.1.1 General Commands----------------------------------------------------------------------------------------11

Request manufacturer identification +CGMI-----------------------------------------------------------------------------11 Request model identification +CGMM ------------------------------------------------------------------------------------11 Request revision identification +CGMR-----------------------------------------------------------------------------------12 Request product serial number identification +CGSN ----------------------------------------------------------------12 Select TE character set +CSCS --------------------------------------------------------------------------------------------13 Request international mobile subscriber identity +CIMI--------------------------------------------------------------15 Multiplexing mode +CMUX---------------------------------------------------------------------------------------------------16 PCCA STD-101[17] select wireless network +WS46------------------------------------------------------------------20

2.1.2 Call control commands------------------------------------------------------------------------------------21

Select Type of Address +CSTA---------------------------------------------------------------------------------------------21 Call mode +CMOD -------------------------------------------------------------------------------------------------------------22 Hang up call +CHUP-----------------------------------------------------------------------------------------------------------22 Select bearer service type +CBST-----------------------------------------------------------------------------------------23 Radio link protocol +CRLP ---------------------------------------------------------------------------------------------------24 Service reporting control +CR-----------------------------------------------------------------------------------------------25 Extended error report +CEER-----------------------------------------------------------------------------------------------27 Cellular result codes +CRC--------------------------------------------------------------------------------------------------27 Single numbering scheme +CSNS-----------------------------------------------------------------------------------------29 Dial command D ----------------------------------------------------------------------------------------------------------------30

2.1.3 Network service related commands--------------------------------------------------------------------31

Subscriber number +CNUM -------------------------------------------------------------------------------------------------31 Network registration +CREG ------------------------------------------------------------------------------------------------32 Operator selection +COPS---------------------------------------------------------------------------------------------------34 Facility Lock AT+CLCK--------------------------------------------------------------------------------------------------------36 Change password +CPWD --------------------------------------------------------------------------------------------------39

Calling line identification presentation +CLIP ---------------------------------------------------------------------------39 Call line identification restriction +CLIR-----------------------------------------------------------------------------------41 Connected line identification presentation +COLP --------------------------------------------------------------------42 Closed user group +CCUG --------------------------------------------------------------------------------------------------44 Call forwarding service +CCFC ---------------------------------------------------------------------------------------------45 Call waiting service +CCWA-------------------------------------------------------------------------------------------------47 Short string procedure AT+CHLD------------------------------------------------------------------------------------------50 Unstructured supplementary service data +CUSD --------------------------------------------------------------------52 Advice of Charge +CAOC ----------------------------------------------------------------------------------------------------53 Supplementary service notifications +CSSN----------------------------------------------------------------------------54 Preferred PLMN list +CPOL -------------------------------------------------------------------------------------------------57 List current calls +CLCC------------------------------------------------------------------------------------------------------58 Read operator names +COPN----------------------------------------------------------------------------------------------60 Get neighbor cells +GNC-----------------------------------------------------------------------------------------------------61

2.1.4 Mobile control and status commands------------------------------------------------------------------61

Phone activity status +CPAS------------------------------------------------------------------------------------------------61 Set phone functionality +CFUN---------------------------------------------------------------------------------------------62 Enter PIN +CPIN----------------------------------------------------------------------------------------------------------------64 Battery charge +CBC----------------------------------------------------------------------------------------------------------65 Signal quality +CSQ------------------------------------------------------------------------------------------------------------66 Restricted SIM access +CRSM ---------------------------------------------------------------------------------------------67 Ringer sound level and ringer type select +CRSL ---------------------------------------------------------------------69 Loudspeaker volume level +CLVL -----------------------------------------------------------------------------------------70 Mute +CMUT---------------------------------------------------------------------------------------------------------------------70 Accumulated call meter +CACM--------------------------------------------------------------------------------------------72 Accumulated call meter maximum +CAMM -----------------------------------------------------------------------------72 Price per unit and currency table +CPUC--------------------------------------------------------------------------------73 Call Meter maximum event +CCWE---------------------------------------------------------------------------------------74 Set Voice Mail Number +CSVM --------------------------------------------------------------------------------------------75 List all available AT commands +CLAC ----------------------------------------------------------------------------------76

2.1.5 Commands related with phonebook service---------------------------------------------------------77

Select phonebook memory storage +CPBS-----------------------------------------------------------------------------77 Read phonebook entries +CPBR-------------------------------------------------------------------------------------------78 Find phonebook entries +CPBF --------------------------------------------------------------------------------------------80 Write phonebook entry +CPBW---------------------------------------------------------------------------------------------81 Report Mobile Equipment error +CMEE----------------------------------------------------------------------------------82

2.1.6 Commands from TIA IS-101 -----------------------------------------------------------------------------83

Select mode +FCLASS -------------------------------------------------------------------------------------------------------83

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DTMF and tone generation +VTS------------------------------------------------------------------------------------------85 Play DTMF tone +WDTMF---------------------------------------------------------------------------------------------------86 Receive gain selection +VGR -----------------------------------------------------------------------------------------------87 Transmit gain selection +VGT-----------------------------------------------------------------------------------------------87

2.2 Commands related to short message service--------------------------------------------89

2.2.1 General Configuration Commands ---------------------------------------------------------------------93

Select Message Service +CSMS-------------------------------------------------------------------------------------------93 Preferred Message Storage +CPMS --------------------------------------------------------------------------------------94 Message Format +CMGF-----------------------------------------------------------------------------------------------------95

2.2.2 Message Configuration Commands--------------------------------------------------------------------96

Service Centre Address +CSCA--------------------------------------------------------------------------------------------96 Set Text Mode Parameters +CSMP ---------------------------------------------------------------------------------------97 Show Text Mode Parameters +CSDH ------------------------------------------------------------------------------------98 Select Cell Broadcast Message Types +CSCB-------------------------------------------------------------------------99 Save Settings +CSAS -------------------------------------------------------------------------------------------------------101 Restore Settings +CRES ---------------------------------------------------------------------------------------------------102

2.2.3 Message Receiving and Reading Commands-----------------------------------------------------103

New Message Indications to TE +CNMI--------------------------------------------------------------------------------103 List Messages +CMGL------------------------------------------------------------------------------------------------------106 Read Message +CMGR-----------------------------------------------------------------------------------------------------108 NEW Message Acknowledgement to ME/TA +CNMA--------------------------------------------------------------109

2.2.4 Message Sending and Writing Commands --------------------------------------------------------110

Send Message +CMGS-----------------------------------------------------------------------------------------------------110 Send Message from Storage +CMSS-----------------------------------------------------------------------------------112 Write Message to Memory +CMGW-------------------------------------------------------------------------------------113 Delete Message +CMGD---------------------------------------------------------------------------------------------------114 Send Command +CMGC---------------------------------------------------------------------------------------------------114

2.2.5 PDU Mode--------------------------------------------------------------------------------------------------115

List Message +CMGL--------------------------------------------------------------------------------------------------------115 Read Message +CMGR-----------------------------------------------------------------------------------------------------117 Send Message +CMGS-----------------------------------------------------------------------------------------------------118 Send Message from Storage +CMSS-----------------------------------------------------------------------------------119 Write Message to Memory +CMGW-------------------------------------------------------------------------------------120

2.3 Commands specified by ITU-T Rec. V25ter as by GSM Rec. 07.07--------------120

2.3.1 Generic TA control commands------------------------------------------------------------------------120

Repeating a command line (A/)-------------------------------------------------------------------------------------------120 Reset to default configuration (Z)-----------------------------------------------------------------------------------------121

Set to factory-defined configuration (&F)-------------------------------------------------------------------------------122 Request identification information (I) ------------------------------------------------------------------------------------123 Request manufacturer identification (+GMI)---------------------------------------------------------------------------124 Request model identification (+GMM)-----------------------------------------------------------------------------------125 Request revision identification (+GMR)---------------------------------------------------------------------------------125 Request product serial number identification (+GSN) --------------------------------------------------------------126 Request complete capabilities list (+GCAP)---------------------------------------------------------------------------127 Command line termination character (S3) -----------------------------------------------------------------------------128 Response formatting character (S4)-------------------------------------------------------------------------------------129 Command line editing character (S5) -----------------------------------------------------------------------------------130 Command echo (E) ----------------------------------------------------------------------------------------------------------131 Result code suppression (Q) ----------------------------------------------------------------------------------------------132 DCE response format (V)---------------------------------------------------------------------------------------------------133 Result code selection and call progress monitoring control (X) --------------------------------------------------134 Circuit 109 (Received line signal detector) behavior (&C) ---------------------------------------------------------136 Circuit 108 (Data terminal ready) behavior (&D)----------------------------------------------------------------------136 Fixed DTE rate (+IPR)-------------------------------------------------------------------------------------------------------138 DTE-DCE character framing (+ICF) -------------------------------------------------------------------------------------139 DTE-DCE local flow control (+IFC)---------------------------------------------------------------------------------------141 DTE-DCE local rate reporting (+ILRR)----------------------------------------------------------------------------------142

2.3.2 Call Control commands and response --------------------------------------------------------------144

Dial (D) --------------------------------------------------------------------------------------------------------------------------144 Wait for dial tone (W) --------------------------------------------------------------------------------------------------------146 Select tone dialling (dial modifier) (T) -----------------------------------------------------------------------------------147 Select pulse dialing (dial modifier) (P)-----------------------------------------------------------------------------------147 Answer (A)----------------------------------------------------------------------------------------------------------------------148 Hook control (H)---------------------------------------------------------------------------------------------------------------149 Automatic answer (S0)------------------------------------------------------------------------------------------------------150 Monitor speaker loudness (L)----------------------------------------------------------------------------------------------151

2.3.3 Data Compression commands ------------------------------------------------------------------------152

Data compression (DS) -----------------------------------------------------------------------------------------------------152 Data compression reporting (DR) ----------------------------------------------------------------------------------------153

2.4 Command specified by ITU-T Rec. T.32 --------------------------------------------------156

2.4.1 Action commands-----------------------------------------------------------------------------------------156

Send a page +FDT-----------------------------------------------------------------------------------------------------------156 Receive a page +FDR-------------------------------------------------------------------------------------------------------157 Terminate a session +FKS-------------------------------------------------------------------------------------------------158 Initialize facsimile parameters +FIP--------------------------------------------------------------------------------------159

2.4.2 DCE Responses ------------------------------------------------------------------------------------------159

Facsimile Connection +FCO-----------------------------------------------------------------------------------------------159 Report DCS Frame Information +FCS ----------------------------------------------------------------------------------160 Report DTS Frame Information +FTC-----------------------------------------------------------------------------------162 Report DIS Frame Information +FIS-------------------------------------------------------------------------------------163 Remote Polling Indication +FPO------------------------------------------------------------------------------------------163 Report Remote ID +FTI -----------------------------------------------------------------------------------------------------164 Report Remote ID +FPI-----------------------------------------------------------------------------------------------------165 Report Remote ID +FCI-----------------------------------------------------------------------------------------------------165 Report NSC Frames +FNC-------------------------------------------------------------------------------------------------166 Report NSF Frames +FNF -------------------------------------------------------------------------------------------------166 Report NSS Frames +FNS-------------------------------------------------------------------------------------------------167 Report Password +FPW ----------------------------------------------------------------------------------------------------168 Report Destination Subaddress +FSA ----------------------------------------------------------------------------------168 Report Polling Address +FPA ---------------------------------------------------------------------------------------------169 Report T.30 Phase C Page Reception +FPS -------------------------------------------------------------------------169 Post Page Messages Response +FET ---------------------------------------------------------------------------------171 Transition to Voice +FVO---------------------------------------------------------------------------------------------------171 Call Termination Status +FHS---------------------------------------------------------------------------------------------172 Report Transmit HDLC Frames +FHT ----------------------------------------------------------------------------------175 Report Received HDLC Frames +FHR ---------------------------------------------------------------------------------176

2.4.3 Service Commands --------------------------------------------------------------------------------------177

Service Class +FCLASS----------------------------------------------------------------------------------------------------177 DCE Capabilities Parameter +FCC--------------------------------------------------------------------------------------178 Current Session Parameter +FIS-----------------------------------------------------------------------------------------179 Current Session Result +FCS---------------------------------------------------------------------------------------------180 Local Facsimile Station ID String +FLI----------------------------------------------------------------------------------180 Local polling ID String +FPI------------------------------------------------------------------------------------------------181 Non-Standard Frame FIF Octet String +FNS -------------------------------------------------------------------------182 Indicate Document to Poll +FLP------------------------------------------------------------------------------------------183 Request to Poll +FSP--------------------------------------------------------------------------------------------------------183 Capability to Receive +FCR -----------------------------------------------------------------------------------------------184 HDLC Frame Reporting +FBU --------------------------------------------------------------------------------------------185 Negotiation Reporting +FNR-----------------------------------------------------------------------------------------------185 Address and Polling Capabilities +FAP---------------------------------------------------------------------------------186 Address and Polling Frames/Subaddress +FSA ---------------------------------------------------------------------187 Address and Polling Frames/Polling Address +FPA ----------------------------------------------------------------188 Address and Polling Frames/Password +FPW -----------------------------------------------------------------------188

Procedure Interrupt Enable +FIE-----------------------------------------------------------------------------------------189 Page Status +FPS------------------------------------------------------------------------------------------------------------190 Copy Quality Checking +FCQ---------------------------------------------------------------------------------------------191 Receive quality Thresholds +FRQ ---------------------------------------------------------------------------------------192 Adaptive Answer +FAA------------------------------------------------------------------------------------------------------193 DTE Phase C Response Timeout +FCT -------------------------------------------------------------------------------193 Call Termination Status +FHS---------------------------------------------------------------------------------------------194 ECM Retry Count +FRY ----------------------------------------------------------------------------------------------------195 Minimum Phase C Speed +FMS -----------------------------------------------------------------------------------------196 Inactivity Timeout +FIT------------------------------------------------------------------------------------------------------196 Minimum Phase C Speed +FMS -----------------------------------------------------------------------------------------197 Report Buffer Size +FBS ---------------------------------------------------------------------------------------------------198 Packet Protocol Control +FPP --------------------------------------------------------------------------------------------198 Data Bit Order +FBO---------------------------------------------------------------------------------------------------------199 Phase C Received EOL Alignment +FEA------------------------------------------------------------------------------200 Image Data Format Conversion +FFC----------------------------------------------------------------------------------200 Modem ID +FMI---------------------------------------------------------------------------------------------------------------201 Model ID +FMM---------------------------------------------------------------------------------------------------------------202 Revision ID +FMR------------------------------------------------------------------------------------------------------------202 Flow Control +FLO -----------------------------------------------------------------------------------------------------------203

2.4.4 Examples (WinFax Pro)---------------------------------------------------------------------------------203

DCE Initialization--------------------------------------------------------------------------------------------------------------203 Send One Page ---------------------------------------------------------------------------------------------------------------204 Receive One Page -----------------------------------------------------------------------------------------------------------205

2.5 GPRS related commands----------------------------------------------------------------------205

2.5.1 Define PDP Context +CGDCONT--------------------------------------------------------------------205

2.5.2 Quality of Service Profile (Request) +CGQREQ--------------------------------------------------208

2.5.3 Quality of Service Profile (Minimum acceptable) +CGQMIN-----------------------------------210

2.5.4 GPRS attach or detach +CGATT---------------------------------------------------------------------213

2.5.5 PDP context activate or deactivate +CGACT------------------------------------------------------214

2.5.6 Enter data state +CGDATA ----------------------------------------------------------------------------216

2.5.7 Show PDP address +CGPADDR---------------------------------------------------------------------218

2.5.8 Automatic response to a network request for PDP context activation +CGAUTO---- 220

2.5.9 Manual response to a network request for PDP context activation +CGANS-------------222

2.5.10 GPRS mobile station class +CGCLASS (GPRS only)-----------------------------------------224

2.5.11 Packet Domain event reporting +CGEREP-------------------------------------------------------226

2.5.12 RS network registration status +CGREG ---------------------------------------------------------228

2.5.13 Select service for MO SMS messages +CGSMS-----------------------------------------------230

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2.5.14 Request GPRS service ‘D’----------------------------------------------------------------------------231

2.5.15 Automatic response to a network request for PDP context activation ‘S0’ ---------------233

2.5.16 Manual acceptance of a network request for PDP context activation ‘A’------------------234

2.5.17 Manual rejection of a network request for PDP context activation ‘H’ ---------------------235

2.6 Module-specific AT Commands-------------------------------------------------------------236

2.6.1 Power Off $POWEROFF -------------------------------------------------------------------------------236

2.6.2 Periodic Signal Quality Report $CSQ----------------------------------------------------------------236

2.6.3 Audio Path $AUPATH -----------------------------------------------------------------------------------237

2.6.4 Audio Gain $AUGAIN------------------------------------------------------------------------------------239

2.6.5 Audio Mute $AUMUTE ----------------------------------------------------------------------------------240

2.6.6 Audio Volume $AUVOL ---------------------------------------------------------------------------------240

2.6.7 Audio AEC $AUAEC-------------------------------------------------------------------------------------241

2.6.8 Audio FIR $AUFIR---------------------------------------------------------------------------------------- 242

2.6.9 Audio VAD $AUVAD-------------------------------------------------------------------------------------243

2.6.10 Audio ABS $AUABS------------------------------------------------------------------------------------244

2.6.11 Audio CONTFLT $AUCONTFLT--------------------------------------------------------------------244

2.6.12 Audio AUATT $AUATT --------------------------------------------------------------------------------245

2.6.13 Audio SMOOTH $AUSMOOTH ---------------------------------------------------------------------246

2.6.14 Audio LEVELMAX $AULEVELMAX----------------------------------------------------------------246

2.6.15 Audio FLT $AUFIL--------------------------------------------------------------------------------------247

2.6.16 Audio MUT $AUMUT-----------------------------------------------------------------------------------248

2.6.17 SIM Ready Notification $SRN------------------------------------------------------------------------248

2.6.18 I/O12 Setting $VCD-------------------------------------------------------------------------------------249

2.6.19 Set duration to clip data on incoming call $TRING ---------------------------------------------250

2.6.20 Convert UNICODE to GB2312 $UNI2GB---------------------------------------------------------251

2.6.21 Convert GB2312 to UNICODE $GB2UNI---------------------------------------------------------251

2.6.22 Play a call tone +GDT----------------------------------------------------------------------------------252

2.6.23 Hardware power off command $HRST------------------------------------------------------------253

2.7 Proprietary AT Commands -------------------------------------------------------------------254

2.7.1 Call progress information %CPI-----------------------------------------------------------------------254

2.7.2 Configuration for SIM application toolkit %SATC-------------------------------------------------259

2.7.3 Send SAT envelope command %SATE-------------------------------------------------------------260

2.7.4 Send SAT command response %SATR ------------------------------------------------------------261

2.7.5 Terminate SAT command or session %SATT-----------------------------------------------------261

2.7.6 Dynamic Multiband: %BAND --------------------------------------------------------------------------262

2.7.7 GPRS Attach/Detach Mode: %CGAATT------------------------------------------------------------262

2.7.8 Flash Memory Check $FSCHK------------------------------------------------------------------------263

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2.7.9 Play Tone on Loud Speaker $CLSL -------------------------------------------------------------264

2.7.10 Play Tone on Speaker $CSSL-----------------------------------------------------------------265

2.7.11 Get PIN1, PIN2, PUK1, PUK2 remaining number %PVRF ----------------------------265

2.7.12 SIM Authentication $SIMAUTH ---------------------------------------------------------------266

2.7.13 RTC DATE ‘$DATE’------------------------------------------------------------------------------266

2.7.14 RTC Time ‘$TIME’--------------------------------------------------------------------------------267

2.7.15 Green LED Setting $GLED---------------------------------------------------------------------268

2.8 M2M: Machine to Machine --------------------------------------------------------------------270

2.8.1 PCO string for context activation ‘%CGPCO’------------------------------------------------------270

2.8.2 TCP/IP Timeout for M2M packet ‘$TIMEOUT’ ----------------------------------------------------270

2.8.3 TCP/IP Remote destination Server information ‘$DESTINFO’--------------------------------271

2.9 Error Message ------------------------------------------------------------------------------------273

2.9.1 Mobile Equipment error result code +CME ERROR: <unsolicited><p>---------------------273

2.9.2 Message Service Failure Result Code +CMS ERROR: <unsolicited><p>-----------------275

M32 AT Command User Manual Revision History Version Content Author Date

0.4

0.5

Add AT+WDTMF, $SRN, $VCD,

Jamie CW Wang 2004/02/09 $TRING Add AT$UNI2GB, $GB2UNI Eason Liu 2004/02/13 Add AT+GDT, modify AT+CMGR

Ken Chang 2004/03/03 AT$NOSLEEP Add AT$AUVAD, $AUABS, $AUFIR William Hsieh 2004/03/25 Add AT$HSRT, modify $UNI2GB, $GB2UNI AT$AUFIR, AT$AUVAD, AT$AUABS,

Kelvin Chan,

2004/04/02

Jamie CW Wang

William Hsieh 2004/05/28 AT$AUCONTFLT, AT$AUATT, AT$AUSMOOTH, AT$AULEVELMAX, AT$AUFIL, AT$AUMUT

1. Introduction

1.1 Introduction to Interface between TE and MS

In order to communicate each other between TE and MS, we must use AT commands. Figure 1.1 illustrates the interface. In section 2, we will divide the content into ten subsections. They are about SIM, list management, mobility management, call control, supplementary service, short message, cell broadcast, base-band and the other service.

AT COMMAND

TE MS

Figure 1.1

Explanation

ME Mobile equipment MS Mobile station. Basically, a mobile station is mobile

equipment with a SIM card.

TE Terminal Equipment that is the same as the controller in

this case.

Getting started

For testing AT commands, the MS can be connected to any computer environment, as long as it has a V.24/V.28 serial interface. The commands can be issued with, for example, HyperTerminal in Microsoft Windows or other emulator programs.

Syntax description

The section gives a brief description of the syntax used for the command set. The MS may echo characters received, depending on the setting of the command E. As a default, echo is enabled, and characters are echoed at the same rate, parity, and format as received.

The character defined by parameter S5 (default, BS, IRA 8) is interpreted as request from the TE to delete the previous character.

<CR> Carriage return character, whose value is specified by

command S3, default IRA 13.

<LF> Line feed character, whose value is specified by

command S4, default IRA 10.

<…>

The name enclosed in angle brackets is a syntactical element. The brackets do not appear in the command line.

[…]

Strings enclosed in square brackets are optional items (sub-parameters). The brackets do not appear in the

command line. Other characters, including ‘?’,’=’, parentheses, etc, appear in commands and response as written.

AT command syntax 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’. MS supports a set of commands referred to as basic syntax commands, and a set of extended syntax commands, the latter prefixed with a plus sign (+).

Basic syntax command The format of basic syntax commands, except for the command D, is as follows:

<name>[<value>]

Example: ATV1<CR> (set text form result codes) <CR><LF>OK<CR><LF>(response) Extended syntax command

+<name>[=<value>]

Example: AT+CMUT=0<CR>( the representation of signal strength) <CR><LF>OK<CR><LF>(response) Test command syntax

+<name>=?

Example: ATS3=?<CR>(show supported S3 values) <CR><LF>S3: (0-127)<CR><LF> <CR><LF>OK<CR><LF> Read command syntax

+<name>?

Example: AT+CACM?<CR>(show current accumulated call meter value) <CR><LF>+CACM: ”0”<CR><LF>(response) <CR><LF>OK<CR><LF> If the indicated name is not recognized, an Error code is issued.

AT response syntax

The default response is text mode that is shown below. See the command V for further details. The format of a response is as follows:

The <response> can be:

•Basic format result code, such as OK.

•Extended syntax result code, prefixed with a plus sign (+) : +<name>: <value>

The result codes are separate by commas if it’s included several values. The <value> followed by the colon is separated by a space. It is also possible that result codes have no value. Unlike basic format result codes, extended syntax result codes have no numeric equivalent, and are always issued in alphabetic form.

There are two types of result code responses:

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 typed an implemented AT command, you should get the result code OK.

If you typed an AT command that was not implemented, or which had the

wrong parameter or syntax, you will get the result code ERROR or else, for example, +CME ERROR followed by an error code.

Unsolicited result code

Unsolicited result codes, such as RING, indicate the occurrence of an event not directly associated with a command being issued from TE.

1.2 Initial the T est Environment

Initial the HyperTerminal.

-Start HyperTerminal

-Name a new connection

-Select the connection port

-Initial the connection port with 115200 bps and none flow control

Initial the MS.

-Put the SIM card into ME and power on the ME.

-Start all of AT Commands with “AT+CFUN=1”

-Camp on the cell with “AT+COPS=0”

1.3 How to Handle SMS messages

This section gives examples of the AT commands for sending and receiving SMS (Short Messages Service) messages. Whatever the destination of the SMS message, the message is always sent via a Service Center (SC). One of the SC’s jobs, among others, is to forward SMS messages to the destination, or save the SMS until the receiving MS becomes available in the GSM network. The message can be stored at the SC up to a maximum time period decided by the sender. Also the message is “time stamped” at the SC and its contents are interpreted according to choices made by the sender. The conclusion of this is that an SMS message, along with other information decided upon by the sender, always contains 2 addresses. First the Service Center Address (SCA), and then the destination address. Also, other useful information is added at the SC.

Setting Service Center Address (SCA)

The service center address is usually stored on the SIM card, but it can be set manually by using the AT command AT+CSCA. Note that the SCA must be given in the international phone number format.

Format of an SMS message

It is important to realize that SMS messages could be sent in two modes: text mode and PDU mode, which is described in detail in the GSM specifications 3GPP

27.005, 3GPP 23.040 and 3GPP 23.038. Because text mode is followed the format of input parameters, it is clear to execute

the commands. We now focus on the introduction of PDU mode. What is PDU mode? First a PDU is a Service Center Address (SCA) followed by a Transport Protocol Data Unit (TPDU). There are several formats of TPDU, but we now only use two forms here:

SMS-SUBMIT TPDU Outgoing SMS messages “submitted” to the SM from

the originating MS.

SMS-DELIVER TPDU Incoming SMS messages “delivered” by the SC to final

destination MS. Therefore we have the following general format of an SMS message: PDU=SCA+TPDU

The TPDU format is a hexadecimal encoded binary format, which means that 2 hexadecimal digits represent a byte or an octet. In general there is a header part of the TPDU, containing the control information, and the follows user data, which can be any type of information (default 7-bit GSM alphabet, 8-bit ISO 8859-1 alphabet or even 8-bit data).

Let’s start with some examples of PDU SMS messages using an SMS-SUBMIT type TPDU. For simplicity’s sake we will send a text message that reads “TEST”, using the default GSM 7-bit alphabet.

Here is the message written out in full: 0011000B916407861582F50000A704D4E2940A Equivalently, we could write this as: 07916407058099F911000B916407861582F50000A704D4E2940A These two have one difference, and that is how we have chosen to describe the

SCA. In the first SMS we use:

00 This is a valid SCA with a length equal to zero.

Therefore we are using the default SCA given by the SIM card, or as given by the AT command AT+CSCA.

07916407058099F9 Here is the SCA hex encoded binary. The first octet

(07) is a length indicator, in this case there are 7 octets to follow. The second octet (91) tells us about the numbering plan and type of number of the coming address. In this case the 91 says that the address is in international phone number format. Then follows the

actual service center address (6407058099F9). Every pair of digits is swap, that there is an odd number of digits in the phone number and therefore, a half byte of fill digits is required at the end (hence the hexadecimal F9). The exact meaning of all the octets and fields in the SCA address is described in detail in 3GPP

23.040.

Let’s analyze the message by breaking it down into its component parts: 11 This octet contains many 1-bit and 2-bit fields that are

described in detail in GSM 03.40. These include:

- TP-MTI : message type indicator

- TP-RD : more messages waiting indicator

- TP-VPF : validity period format

- TP-SRR : status report request flag

- TP-UDHI : user data header indicator flag

- TP-RP : reply path setting flag

00 This octet is only associated with the 8-bit field TP-MR

and is basically a message reference number, which can be chosen by the user. Here we set the message reference number to zero (00HEX).

0B916407861582F5 This is the destination address (TP-DA). The format of

the address field is given in detail in 3GPP 23.040. It is similar to the format of the SCA, but now it refers to the phone number of the receiving MS. The first octet (0B) is a phone number length indicator. In this case the phone number of the destination MS consists of 11 digits. The second octet (91) is the numbering plan and type of number of the coming address. The address is in international phone number format. Then follows the mobile number with every pair of digits in reverse order, and because we have an odd number of digits a half octet of fill bits are required (hence the F5HEX).

00 This is the protocol ID (TP-PID) which refers to a

possible higher level protocol being used or indicates inter-working with certain types of telematic devices. This can usually be left set to zero.

00 This is the data coding scheme field (TP-DCS) that is

described in detail in 3GPP 23.038. Basically this octet

tells us what kind of user data is being sent. For instance, if we are using a 7-bit or 8-bit alphabet, or we are sending 8-bit data. It also informs the receiving MS about the class of the SMS message, which tells it how to handle and store the incoming SMS message.

A7 This is the validity period (TP-VP). The validity period

is how long the SC will store the SMS, waiting for the receiving MS to come in contact with the GSM network. If the SMS is not received by the destination MS within this time, then the message will be discarded. 3GPP 23.040 describes this field in detail.

04 TP-UDL. This is the length of the user data. It is given

in septets, if TP-DCS describes the message as using the default 7-bit GSM alphabet, or octets otherwise.

D4E2940A Finally we come to the user data (TP-UD). This is

4-septets long, defined above in TP-DCS and TP-UDL. The message reads “TEST”. Note the one character is not represented by one octet, but by a septet (7-bits), and therefore it can be quite complicated to decipher a GSM text SMS by looking at the PDU. 3GPP specification 23.038 describes in detail how the 7-bit GSM alphabet works and how to convert from the hexadecimal to the characters. You may know that one can send 160 characters in an SMS message. This is

only possible in 140 bytes using a 7-bit alphabet Before we finish we should also take a look at the TPDU of SMS-DELIVER type. This is the PDU one would see when reading an SMS that has been sent to the module.

07916407058099F9040B916407861582F500009910702123040004D4E2940A The TPDU breaks down as follows:

04 TP-MTI, TP-MMS, TP_SRI, TP-UDHI, TP-RP 0B916407861582f5 This is the originating address (TP-OA) 00 TP-PID 00 TP-DCS 99107021230400 This is the service center time stamp. Every pair of

digits are reversed. This time stamp reads, in octets

from left to right: the date 990107 (year, month, day),

the time 123240 (hours, minutes, seconds). Finally the

last octet is a reference for the difference in time

between local time and GMT. 04 TP-UDL D4E2940A TP-UD

Sending SMS messages

The AT command to use is AT+CMGS. Notice that this is the length of the TPDU and not the PDU, so it does not include the SCA. The length of the message is 4 octets and the message reads “TEST”. Example1: A user would like to send a GSM 7 bit alphabet text “TEST” to number “0910123456”, he may use AT+CMGS=17<CR> >0011000A8190012143650000A704D4E2940A<CTRL-Z> +CMGS:122 ( depends on the MS) OK

Reading SMS message from storage

To read SMS messages from storage, the AT commands AT+CMGL and AT+CMGR should be used. Example1: AT+CMGR=1 +CMGR: 1,,23 07916407058099F9040B916407950303F100008921222140140004D4E2940A OK

Example2: AT+CMGL=4 The 4 here means “all messages”. +CMGL: 1,1,23 07916407058099F9040B916407950303F100008921222140140004D4E2940A +CMGL: 2,1,26 07916407058099F9040B916407950303F10000892122216000000841E19058341 1E91 +CMGL: 3,1,27 07916407058099F9040B916407950303F10000892122217064000941E19058341 E9149 OK

Deleting SMS messages

To delete an SMS message from the selected <mem1>, use the AT+CMGD command.

Example1: AT+CMGD=1 OK

Memory management

Once both SM are full, then the module will receive no new messages and SMS messages will be buffered in the Service Center until the following happens:  The validity period of the message expires. The validity period is set by

TP-VP.

 A message is deleted by using AT+CMGD. An empty memory position

becomes available and the module can receive a new message. There are other ways to control the storage of SMS messages. In the TPDU field, TP-DCS, one can set the class of the SMS message. Basically the different SMS classes are as follows: Classless SMS (TP-DCS=00hex). This is usually the type sent by a mobile

telephone. They are stored in the available memory.

Class 0 SMS (TP-DCS=F0hex). These are not stored anywhere, but are

sent directly to the telephone display. Since there is no display one can forward the messages to the TE by means of the AT command setting AT+CNMI=3,2

Class 1 SMS (TP-DCS=F1hex). These are directed specifically to ME if

there is a memory storage available, otherwise it will be

stored in SM. Class 2 SMS (TP-DCS=F2hex). These are directed specifically to SM. Class 3 SMS (TP-DCS=F3hex). These messages shall normally be

transferred to the terminal equipment or application, if

requested to do so, This is controlled by the AT command

AT+CNMI For a deeper explanation and more information regarding the different SMS classed and their use see the 3GPP specification 23.038.

2. Implemented AT commands for MS

2.1 Commands specified by GSM REC.27.07

2.1.1 General Commands

Request manufacturer identification +CGMI

Table: +CGMI parameter command syntax

Command Possible response(s) +CGMI <manufacturer>

+CME ERROR: <err>

Description

Read handset or model’s manufacturer’s ID.

Defined values <manufacturer> : total number of characters shall not exceed 2048.

Informative examples

-Initial the HyperTerminal

-Initial the MS

-AT Command

AT+CGMI<CR>

BenQ

Request model identification +CGMM

Table: +CGMM parameter command syntax

Command Possible response(s)

+CGMM <model>

+CME ERROR: <err>

Description

Read model information which determined by ME manufacturer.

Defined values

<model id>: string type

Informative examples

-Initial the HyperTerminal

-Initial the MS without SIM card

-AT Command AT+CGMM <CR> <model>

Request revision identification +CGMR

Table: +CGMR parameter command syntax

Command Possible response(s)

+CGMR <revision>

+CME ERROR: <err>

Description

Read revision of ME. It may include software and hardware revision.

Defined values

<revision >: information text

Informative examples

-Initial the HyperTerminal

-Initial the MS without SIM card

-AT Command

AT+CGMR<CR>

SW ver: 1.0.9 HW ver: 1.0 FS ver: 0.4.8.0 Build Date: 2003/10/24 Build Time: 14:17:57

Request product serial number identification +CGSN

Table: +CGSN parameter command syntax

Command Possible response(s)

+CGSN <sn>

+CME ERROR: <err>

Description

Read serial number identification which determined by ME manufacturer.

Defined values

<sn >: total number of characters shall not exceed 2048 characters.

Informative examples

-Initial the HyperTerminal

-Initial the MS without SIM card

-AT Command

AT+CGSN<CR>

IMEI: 44601919750759-5 IMEISV: 44601919750759-00

Select TE character set +CSCS

Table: +CSCS parameter command syntax

Command Possible response(s) +CSCS=[<chset>] +CSCS? +CSCS: <chset> +CSCS=? +CSCS: (list of supported <chset>s)

Description

Set command informs TA of which character set “<chset>” is used by the TE. TA is then able to convert character strings correctly between TE and ME character sets.

When TA-TE interface is set to 8-bit operation and used TE alphabet is 7 bit, the highest bit shall be set to zero.

Read command returns the current setting and test command displays conversion schemes implemented in the TA. Note Appendix D will explain the correspondence between TE and ME at phonebook commands, such as +CPBR,+CNUM,+CPBW,+CPBF.

Defined values

<chset>: string type

Command Possible response(s)

“GSM”(default) “HEX”

GSM default alphabet Character strings consist only of hexadecimal numbers from 00 to FF;e.g. “032FE6” equals three 8-bit characters with decimal values 3,47 and 230;no conversions to the original ME character set shall be done.

“IRA” “UCS2”

International reference alphabet 16-bit universal multiple-octet coded character set; UCS2 character strings are converted to hexadecimal numbers from 0000 to FFFF. ; e.g. “004100620063” equals three 16-bit characters with decimal values 65,98 and 99.

“8859-1” “PCCP437” “PCDN”

ISO 8859 Latin 1 character set PC character set Code Page 437 PC Danish/Norwegian character set

Informative examples

-Initial the HyperTerminal

-Initial the MS without SIM card

-AT Command

AT+CSCS=? <CR> +CSCS: "GSM","IRA","PCCP437","PCDN","8859-1","HEX","UCS2" OK

2. AT+CSCS= “GSM” +CSCS: “GSM” OK AT+CSCS? <CR> +CSCS: “GSM” OK

AT+CSCS=”UCS2” OK AT+CPBS=?

+CPBS: "SM",7,100 OK AT+CPBR=1,3

+CPBR: 1,"12345",129,"00520061006E00640079" +CPBR: 2,"2",129,"004300610020"

+CPBR: 3,"3",129,"00450020"

AT+CSCS=”IRA” OK

AT+CPBR=1,3 +CPBR: 1,"12345",129,"Randy" +CPBR: 2,"2",129,"Ca " +CPBR: 3,"3",129,"E "

Request international mobile subscriber identity +CIMI

Table: +CIMI parameter command syntax

Command Possible response(s) +CIMI +CIMI: <IMSI>

+CME ERROR:<err>

Description

Execution command causes the TA to return <IMSI>, which is intended to permit the TE to identify the individual SIM that is attached to ME.

Defined values

<IMSI>: International Mobile Subscriber Identity (string without double quotes)

Informative examples

-Initial the HyperTerminal

-Initial the MS

-AT Command

AT+CIMI

+CIMI: 466880100493652

Multiplexing mode +CMUX

Table: +CMUX parameter command syntax

Command Possible response(s) +CMUX=<mode>[,<subse

+CME ERROR:<err> t>[,<port_speed>[,<N1>[, <T1>[,<N2>[,<T2>[,<T3>[, <k>]]]]]]]] +CMUX? +CMUX: <mode> [,<subset>], <port_speed>,

+CME ERROR:<err> +CMUX=? +CMUX: (list of supported <mode>s), (list of

supported <subset>s), (list of supported

<port_speed>s), (list of supported <N1>s), (list

of supported <T1>s), (list of supported

<N2>s), (list of supported <T2>s), (list of

supported <T3>s), (list of supported <k>s)

Description

This command is used to enable/disable the GSM 07.10 multiplexing protocol control channel. Refer to subclause 9.2 for possible <err> values. The AT commands sets parameters for the Control Channel. If the parameters are left out, the default value is used.

Read command returns the current mode and the settings.

Test command returns the supported modes and parameters.

It is recommended that the ME/TA/TE should autobaud to the +CMUX command up to and including an interface speed of 9600 bits/s.

The OK or +CME ERROR: <err> response is returned at the speed of the +CMUX command prior to entering <mode>.

It is recommended that whenever the multiplexer control channel is released the ME/TA/TE should assume an interface rate of up to and including 9600 bits/s for auto bauding purposes irrespective of any previous higher speed having been selected.

If a +CMUX command is issued whilst in any multiplexer mode then that +CMUX command shall be ignored and the ME/TA shall return an +CME ERROR: <err> response.

Defined values

<operation> ( multiplexer Transparency Mechanism) 0 Basic option (not support in current version) 1 Advanced option

<subset>: This parameter defines the way in which the multiplexer control channel is set up. A virtual channel may subsequently be set up differently but in the absence of any negotiation for the setting of a virtual channel, the virtual channel shall be set up according to the control channel <subset> setting. 0 UIH frames used only. 1 UI frames used only. 2 I frames used only. Default value:0

<port_speed> (transmission rate): 1 9600 bits/s 2 19200 bits/s 3 38400 bits/s 4 57600 bits/s 5 115200 bits/s 6 230400 bits/s

<N1> (maximum frame size): 1-32768 default Value: 31 (64 if Advanced option is used)

<T1> (acknowledgement timer in units of ten milliseconds): 1-255, where 10 is default (100 ms)

<N2> (maximum number of re-transmissions): 0-100, where 3 is default

<T2> (response timer for the multiplexer control channel in units of ten

milliseconds): 2-255,where 30 is default (300ms) NOTE: T2 must be longer than T1.

<T3> (wake up response timer in seconds): 1-255, where 10 is default

<k> (window size, for Advanced operation with Error Recovery options): 1-7, where 2 is default

Informative examples

-Initial the HyperTerminal

-Initial the MS

-AT Command AT+CMUX=? +CMUX: (1),(0),(1-5),(10-100),(1-255),(0-100),(2-255),(1-255),(1-7) OK

Mux Example

Request: 92/8/3 下午 05:38:36.812492864 (+300.4480146000 seconds)

41 54 45 30 51 30 56 31 0D ATE0Q0V1

Normal AT command mode at initial

Answer: 92/8/3 下午 05:38:36.822507464 (+0.0100146000 seconds)

0D 0A 4F 4B 0D 0A ..OK..

The response of ATE0Q0V1

Request: 92/8/3 下午 05:38:37.583617064 (+0.5908614000 seconds)

41 54 2B 43 4D 55 58 3D 31 2C 30 2C 35 0D AT+CMUX=1,0,5.

Mux mode enable command Advanced without error recovery

Answer: 92/8/3 下午 05:38:37.593631664 (+0.0100146000 seconds)

0D 0A 4F 4B 0D 0A ..OK..

The response of MUX mode command

From now on all command and information should be encapsulated with HDLC format

Request: 92/8/3 下午 05:38:38.394799664 (+0.8011680000 seconds)

7E 03 3F FC 7E ~.?ü~

First SABM packet to start DLC 0 (that is , disconnected mode)

Answer: 92/8/3 下午 05:38:38.404814264 (+0.0100146000 seconds)

7E 03 73 85 7E ~.s ~

The ACK of first SABM

After the response packet is send , the control channel ,DLC 0 is established

Request: 92/8/3 下午 05:38:38.655179264 (+0.2503650000 seconds)

7E 07 3F 89 7E ~.? ~

Send the second SABM packet to start DLC 1

Answer: 92/8/3 下午 05:38:38.655179264 (+0.0000000000 seconds)

7E 07 73 F0 7E 7E 01 FF E3 05 07 0D B6 7E 7E 05 ~.sð~~.ÿã...¶~~. EF 41 54 2D 43 6F 6D 6D 61 6E 64 20 49 6E 74 65 ïAT-Command Inte 72 70 72 65 74 65 72 20 72 65 61 64 79 0D 0A DF rpreter ready..ß 7E 7E 01 FF E3 05 07 0D B6 7E 7E 01 FF E3 05 07 ~~.ÿã...¶~~.ÿã.. 0D B6 7E 7E 01 FF E3 05 07 0D B6 7E .¶~~.ÿã...¶~

There are sequence responses form the module, let’s analyze step by step

7E 07 73 F0 7E



The ACK of DLC 1, there are two DLC exist now

7E 01 FF E3 05 07 0D B6 7E

UIH control frame to DLC 1 with modem status message

7E 05 EF 41 54 2D 43 6F 6D 6D 61 6E 64 20 49 6E 74 6572 70 72 65 74 65

72 20 72 65 61 64 79 0D 0A DF 7E

UIH information frame to DLC 1 , it’s a normal information. Note that the information field

“41 54 2D 43 6F 6D 6D 61 6E 64 20 49 6E 74 6572 70 72 65 74 65 72 20 72 65 61 64 79 0D 0A” is the string “AT-Command Interpreter ready..” to note the TE.

This field is quiet different form UIH control frame, user should take care about this.

7E 01 FF E3 05 07 0D B6 7E

UIH control frame to DLC 1 with modem status message

(retransmit)

7E 01 FF E3 05 07 0D B6 7E

UIH control frame to DLC 1 with modem status message (retarnsmit)

As you can see the TE do not response the UIH control frame at all. The module just retransmit the frame until for N2 times. After retrying N2 times, the module give up.

PCCA STD-101[17] select wireless network +WS46

Table: +WS46 parameter command syntax

Command Possible response(s) +WS46=[<n>] +WS46 <n> +WS46=? (list of supported <n>s)

Description

Set command selects to WDS side stack <n> to be used by the TA. Read command shows current setting and test command displays side stacks implemented in the TA.

Defined values

<n>:12 GSM digital cellular

Informative example

-Initial the HyperTerminal

-Initial the MS without SIM card

-AT Command AT+WS46=? +WS46: (12) OK

AT+WS46? +WS46: 12 OK

2.1.2 Call control commands

Select Type of Address +CSTA

Table: +CSTA parameter command syntax

Command Possible response(s) +CSTA=<type> OK +CSTA? +CSTA: <type> +CSTA=? +CSTA: (list of supported <type>s)

Description

Set command selects the type of number for further dialing command (D) according to GSM/UMTS specifications. Test command returns values supported by the TA as a compound value.

Defined values

<type>: type of address octet in integer; default 145 when dialing string includes international access code character “+”, otherwise 129.

Informative examples

-Initial the HyperTerminal

-Initial the MS

-AT Command AT+CSTA=? +CSTA: (129,145) OK

AT+CSTA? +CSTA: 129 OK

AT+CSTA=161 OK AT+CSTA? +CSTA: 161 OK

AT+CSTA=128 OK AT+CSTA?

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