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Siemens M1 User's Manual

1. lt COPS status n gt n 0 3 STATUS n Meaning Explanation 0 Unknown Status unknown 1 Available Network operator is available 2 Current This network operator is the one currently in use 3 Forbidden This network operator is forbidden Operator Network Displays the network operator in text format and operator numeric format Enter AT COPS GSM module COPS 2 D1 TELEKOM 26201 COPS 3 D2 PRIVAT 26202 OK AT COPS Use this network operator This command allows you to select a network operator manually or to activate the auto matic selection of a network operator It is recommended that you first display a list of available network operators AT COPS mode n gt format f gt operator Moden Mode n specifies how the new network operator is to be selected The meaning is the same as for the AT COPS read command Format f format f gt specifies the format to be used for displaying the operator The GSM M1 supports only the numeric format for selection Operator The network operator to be used numeric format Enter AT COPS 0 The M1 automatically searches for a operator MI OK Enter AT COPS 1 2 26201 GSM module OK 38 Technical reference section Please note The GSM module must not register when you select a forbidden operator manually Otherwise you will not be able to set up any more connections Display the
2. Enter the decimal total for 0 0 32 0 0 0 0 0 32 Command ATS22 32 64 Technical reference section Overview of the S registers Please note The tables below do not include the reserved registers M aking entries in these unlist ed reserved registers can cause the GSM module to malfunction spen Number of ringing signals after which the system will answer automatically i e the GSM module goes off hook after the n th ringing signal Entering a value for n from 1 to 5 activates auto answer The maximum value is 5 ringing signals The value 0 deactivates auto answer The factory setting is o Internal counter for ringing signals Each incoming ringing signal increments the register contents by one If the call was answered the register is reset to 0 after a preset interval This is a read only register ASCII value of the escape command characters The factory setting for all countries is 43 which corresponds to the ASCII characters S2 can be set to any value from 1 to 127 If 0 or a value greater than 127 is set the escape command character is deleted When the amp D1 amp D2 and amp D3 options are enabled the GSM module retums to command mode as Soon as it detects that the level of the DTR signal has changed from ON to OFF ASCII value of the lt CR gt character The factory setting for all countries is 13 lt CR gt terminates command lines and initiates their execution as
3. sess 55 AT4CSMS Select message service ok ee ees 56 AT CPMS Preferred message Storage 0 00 cece eee ees 56 AT CMGF Message format 0 00 cee 57 AT CSCA Service center address 0 0 eee 57 AT CMGR Read message 1 ete 58 AT CMGS Send message sssssssess enn 58 AT CMGW Write message to memory nauau anaana 59 AT CMGD Delete message 0ococcccccccr eere 59 AT4CNMI New message indications 0ococoocccocoro roo 59 AT CMGL List messages ooocoococo enn 60 AT CMS ERROR message service failure result codes 60 Fax operation conforming to TR 29 2 0 cece cee 61 Contents The Ssregisters dera reed rl rl paa 61 ATSn Read an S register 6 0 tees 62 ATSn x Write to an S register 0 eee 62 Binary and decimal values in S registerS cece eee 63 Bit position registers 0 6c teas 64 Overview of the S registerS 6 2 eects 65 AT amp In Testfunctions 0 0 ete 68 AT amp TO Terminate an active test 6 eee 68 AT amp T1 Initiate local digital test loop nnana 68 ATIn Display GSM module I data esses 69 Technical data Cerler a 70 V24 interface i cr A RA rs 70 Hybrid connector manufacturer specific 0 0 0 cee eee 71 GS MMOD OS io a 72 LV AA anal armed a ue t Remus 72 D T T 72 SMS ces emet ter aerea eer tente edt eed sa ae gon RU RON CR 72 GSM documentation GSM reference do
4. sssssssse ees 24 Displaying and storing a configuration liiis esee esee 24 ATS amp F Load factory profile 0 0 eh 25 ATS amp V Display configuration ooococooccrcorr tes 25 Configuring the module using AT commands 0 0c eee eee ees 26 Screen OutpU ts cec les COUR A a CONTR a wee d 26 Limits of screen outputs 2 0 eee 26 ATEni Command echo ees e e X HORE E Rx oP eas 26 ATQn Activate and deactivate result codes o o oooooomom o o 26 ATXn Extended connect message ooocccocc 27 Control line options ooocoocococor Ren 27 AT amp Cn Data Carrier Detect DCD options n aaau aaa 27 AT amp Dn Data Terminal Ready DTR options osaan 28 Data flow Control sis sa ii a eee fada ps 28 Memory commands ssssssses eee ren 28 AT amp Zn x Store telephone number ococcccoc essere 29 ATDS n Dial stored telephone number oocccccccc c eee eee 29 AT amp Wn Store configuration ooocococcrcrr res 29 AT amp Yn Configuration at pOWeruUP ooocooccoococc een 30 ATZn Load user profile ooocoococococonro mh 30 Contents AT4C commands for GSM iarasi snoeren en 30 AT4CGMI Request manufacturer ID 1 6 0 cee eens 31 AT CGMM Request model ID ooocooccoccocc erre 31 AT CGMR Request revision ID 0 cee 31 AT CGSN Request product serial number ID oo oooomooo o 32 AT CHUP Hangup call
5. CM GW lt length gt lt stat gt lt CR gt PDU CMS ERROR lt err gt is given lt ctn Z ESC gt AT CMGD Delete message This command allows you to delete a short message from lt mem1 gt at the location lt in dex gt Action command syntax CM GD lt index gt CMS ERROR lt err gt AT4CNMI New message indications This command allows you to determine how the TE will be notified when a short mes sage is received from the network when the TE is activated Parameter Command Syntax Command Possible response s CNMI lt mode gt mt lt com gt lt ds gt CMS ERROR lt er gt bfrTI CNMI CNMI lt mode gt lt bm gt lt ds gt lt bfr gt CNMI CNMI list of supported lt modes gt s list of supported lt mt gt s list of sup ported lt bm gt s list of supported lt ds gt s list of supported lt bfr gt s lt ds gt Sets result code indication routing for SMS STATUS REPORTS lt bfr gt Defines the handling method for buffered result codes when lt mode gt 1 2 or 3 is enabled 59 Technical reference section AT CMGL List messages This command allows you to display the short message with the status lt stat gt from memory lt mem1 gt Action command syntax Command Possible response s CMGLA lt stat gt If PDU mode CMGF 0 and command successful CMGL lt index gt stat lt length gt lt CR gt lt LF gt lt pdu gt lt
6. oooococccco te 32 AT CEER Extended error report 2 0 eee 32 AT CMEE Report mobile equipment error 2 eee 33 AT CREG Network registration s asuaan e eee 35 AT COPS Operator Selection 0 seien 36 AT4COPS Display current network operator 0 cee eee 36 AT COPS Display list of available network operators 37 AT COPS Use this network operator lesse esses 38 AT CPIN Enter PIN and query blocks 20 0 ccc eee eee 39 AT CPIN2 Enter PIN2 and query PIN2 blocks oooooocoocoooo 40 AT CPWD Change password cece nnn 41 AT CSQ Signal quality 02 0 cette 42 AT CKPD Keypad control o ooooococoocc eh 43 AT CXXSN Single numbering parameterization o oooooooooomo 44 AT CXXMOC Parameterize for outgoing calls o ooooooo 46 AT CPBS Select phonebook memory storage lsslslseuss 47 AT CPBR Read phonebook entries o oocoocccccoco 48 AT CPBW Write phonebook entry iisssessss eese 49 AT CBST Select bearer service type o ococooccccocco esses 50 AT CRC Cellular result code ooocoococcocor eee 51 AT CLIP Calling line identification presentation 0ooooooooo o 52 AT CPAS Phone activity status oooocoococococcor 53 AT FCLASS Select mode ooococccocco ees 54 AT CXXCID Card identification lisse eres 55 AT4C commands for the short message service SMS
7. GSM 03 40 GSM 03 45 GSM 04 11 GSM 04 21 GSM 05 08 GSM 0701 GSM 0702 GSM 0705 GSM 0707 ETSI contact The Technical Specifications can be ordered from the following address European Telecommunications Standards Institute ETSI Secretariat Postal Address F 06921 Sophia Antipolis CEDEX FRANCE Office Address 650 Route des Lucioles Sophia Antipolis Valbonne FRANCE X 400 c fr a atlas p etsi s secretariat Internet secretariat etsi fr Tel 33 92 94 42 00 Fax 33 93 65 47 16 73 General information CE Sign The GSM Module M 1 with its IM El number is approved for operation in GSM networks This device also conforms to the following EU guidelines 89 336 EWG Electromagnetic Compatibility C 91 263 EWG CTR5 and CTR 9 ETS 300342 1 as confirmed by the CE mark Service The current version of this manual and of the M 1 software can be found in the following mailbox Mailbox telephone number 49 89 722 46555 74 Issued by Private Communication Systems Group HofmannstraBe 51 D 81359 Munich Siemens Aktiengesellschaft O Siemens AG 1996 All rights reserved Subject to availability Right of modification reserved Order No A24859 N4000 A100 1 7677 Printed in Germany 02 96 Particularly environmentally friendly paper 50 recycled 50 chlorine bleached
8. Power consumption Supply Channel Standby Send mode voltage search E Typical Max Typical Max 12V 130 mA 70 mA 150 mA 220 mA 500 mA 24V 70 mA 45 mA 150 mA 120 mA 500 mA Setting testing the COM interface In order to control the GSM Module M 1 and transfer data via the serial interface COM port the interface parameters must be set The parameters settings are as follows COM port 1 4 depending on which one the M 1 was connected to Baud rate 2400 19200 baud autobauding Data bits 8 Parity None corresponds to 8N1 Stop bits 1 Duplex Full For instructions on how to set these parameters see the user guide for the computer or terminal program used Installation startup In order to test the interface and your settings enter AT The GSM module should then respond with OK If it does not do so configure a different interface in the communi cation program and try again Also check the cable When this test has been success fully completed check the functionality of the GSM module by entering AT amp T1 This command activates a test loop From now on all the characters entered from your GSM module should be echoed on the computer Terminate the test by entering the escape sequence If the test is acknowledged by the NO CARRIER code the GSM module s data functionality is operating correctly Setting the GSM radio transfer rate The transfer rate baud rate via the radio
9. oe amma O e MemeMy lt name n gt n 0 9 C 50 Technical reference section AT CRC Cellular result code This command controls whether or not the extended format of incoming call indication is used When enabled an incoming call is indicated with unsolicited result code CRING lt type gt instead of the normal RING Displays a list of supported modes Nc AT CRC lt mode n gt n 0 1 1 enables extendet format CRING lt type gt 51 Technical reference section AT CLIP Calling line identification presentation This command refers to the GSM supplementary service CLIP Calling Line Identifica tion Presentation that enables a called subscriber to get the calling line identity CLI when receiving a call The set command CM P lt n gt enables or disables the presentation of the CLI at the M1 It has no effect on the execution of the service CLIP in the network When enabled CLIP lt number gt lt type gt response is returned after every RING result code The read command CLIP gives the status of mode n and also triggers an interroga tion of the provision status of CLIP in the network AT CLIP AT CLIP Displays mode n mode m AT CLIP Displays a list of supported modes n AT CLIP lt mode n gt Selects new mode AT CLIP lt mode n gt n 0 1 1 enables extendet format lt mode m gt m 0 1 2 9 arem 52 Technical reference section AT CPAS
10. Phone activity status This command returns the activity status of the GSM module M 1 It can be used to in terrogate the M1 before requesting action AT CPAS AT CPAS Displays status AT CPAS Displays a list of supported stati AT CPAS Command AT CPAS Oooo CIN a ees 53 Technical reference section AT FCLASS Select mode This command puts the M 1 into a particular mode of operation data fax Kuss ES So S e T Important Example The customer has a D2 card and uses M 1 with the following default settings FCLASS 0 B99 CRC 0 When he receives a call MTC RING is displayed on his PC The call can now be ac cepted by means of ATA The DSA in the M1 accepts the call as a data call proper ir respective of whether it is a data or fax call The reason for this is that B99 causes the incoming service identifier to be ignored With fax calls this causes problems of many kinds because the user does not know which service is being used The command AT CRC 1 allows the M 1 to also indicate the service identifier for in coming calls so that the user what service is being used To ensure that all units involved in the call accept the call in the proper manner the user should select the correct service using AT FCLASS before accepting the call 54 Technical reference section AT CXXCID Card identification Execution of this command displays the SIM number AT CXXCID AT CXXCID D
11. Pin assignment See the section entitled Technical data Logic V 24 asynchronous Baud rates 2400 19200 baud autobauding Parity None Character format 8 data bits Stop bits 1 Level Conforming to CCITT Recommendation V 28 Hybrid connector manufacturer specific The hybrid connector contains the power supply ignition for switching the device on and off and the connection for the extemal antenna GSM 900 MHz antenna It is con nected via the cable supplied Pin assignment Meaning of pins See the section entitled Technical data Function LED LED off Device switched off not ready LED flashing slowly Device switched on ready LED flashing rapidly Device switched on connection setup For a detailed function indication use the corresponding AT commands 6 Installation startup Mounting the module Two standard options are available for mounting the GSM Module M 1 Retaining clip Velcro Before applying the velcro make sure that the surface of the M1 recess provided in center of base and the corresponding surface are free of dust and oil The mounting location must comply with the following environmental conditions Temperature range 20 C 55 C for full operability Temperature from insolation 110 C Light condensation permissible Power supply power consumption Cable assignment Power is supplied via th
12. in telephone number memory 0 GSM Data Module OK Telephone number has been stored Enter ATSD1 Activates DTR dialing GSM module OK Command has been executed DTR is OFF DTR switches ON 123456789 is dialed automatically DTR switches OFF GSM module goes on hook 23 Technical reference section ATA Answer a call The GSM module does not automatically answer calls after you switch on your com puter In accordance with the factory configuration it does not go off hook The ATA command causes your GSM module to go off hook when the phone rings You deter mine whether or not you wish to answer ATSO n Auto answer mode The ATSO n command allows you to configure your GSM module so that it will auto matically answer calls n represents the number of ringing signals before the call is answered Permissible values are from O to 5 ATSO n n 0 5 ATSO 0 No auto answer incoming calls are ignored ATSO 1 The GSM module goes off hook after the first ringing signal fe RENDERE ATSO 5 The GSM module goes off hook after the fifth ringing signal You can use the ATA command to answer calls at any time regardless of these set tings Displaying and storing a configuration The GSM module works with a set of parameters that determine its functioning This set of parameters is called the active configuration profile Values for these parameters are predefined in a factory configuration that you can use
13. 9 Key 0 9 4 C or c Clears the display E or e Simulates the End key 1 or i Simulates the Info key S or s Simulates the Start key X or x Phonebook key Y or y Deletes the last character Z or z Exits menu Simulates the left softkey Simulates the right softkey You would like to enter the key combination 4062 Enter AT CKPD 06 GSM module OK 43 Technical reference section AT CXXSN Single numbering parameterization Some GSM network operators support single numbering and some support multinum bering You can determine which form of numbering is supported by your operator from whether your chip card has one number or more than one number at which it can be Called for multiple voice or data services You apply for the 9600 bit s data and fax transmission services from your network operator and receive 2 telephone numbers with your chip card one for when you wish to be called via the 9600 bit s data service and one so that you can be reached via the fax service This means that your network operator supports multinumber ing You have received only one telephone number for the 9600 bit s data and fax ser vices This means that your network operator supports single numbering Single numbering is not supported in Germany When another party wishes to reach you yourtelephone must decide which service will answer the call before it rings If you set your GS
14. CPBS Command AT CPBS Result code CPBS MD SM OW FD Meaning Last number redial memory displays the last telephone num bers that you dialed SIM card this is the standard phonebook containing the entries mally you only need to read this directory since you cannot call your own number and it does not change Fixed dialing number this is a second phonebook If the rele vant block is set only the numbers from this FDN phonebook can be called This phonebook and the block are protected by PIN2 OW Own telephone number this phonebook contains your own telephone numbers under which you can be reached Nor 47 Technical reference section AT CPBR Read phonebook entries This command allows you to read the phonebook that was selected by means of the AT CPBS command You must also enter the number of the relevant position or a range of numbers AT CPBR AT CPBR index1 index2 Reads the phonebook entry with the number index1 If you also enter a second index reads the phone book from index1 to index2 AT CPBR Provides you with information on the maximum number of entries that can be contained in the direc tory and the maximum size of these entries The test command provides you with information on the format of the phonebook that was selected by means of AT CPBS AT CPBR Result code CPBR lt index gt lt number length gt lt text length gt INN CN 48 Techn
15. CPIN READY M 1 does not expect PIN2 it has already been entered CPIN SIM PIN2 M1 expects PIN2 for the SIM card CPIN SIM PUK2 M1 expects PUK2 for the SIM card including PIN2 40 Technical reference section You enter the correct PIN2 Enter AT CPIN2 1234 GSM module OK You enter an incorrect PIN2 Enter AT CPIN2 1234 GSM module CME ERROR WRONG PASSWORD AT CPWD Change password This command allows you to change the password Since more than one password will be available for future uses you must specify the name of the password upon entering it AT CPWD Command Result AT CPWD Displays a list of the passwords supported These cur rently include the PIN device code and PIN2 AT CPWD lt name gt This command instructs the GSM module to change the lt old password gt relevant password When changing the password you lt new password gt must enter both the old and new password This ensures that changes can be made only if access is authorized Enter AT CPWD Requests the list of passwords SC SIM PS device code P2 PIN2 GSM module CPWD SC 8 PS 8 P2 8 oK Enter AT CPWD sc 1234 4321 GSM module OK Password was successfully changed The following result code is returned if the old PIN you enter is incorrect Enter AT CPWD sc 0123 4321 GSM module CME ERROR INCORRECT PASSWORD The password was not chan
16. CR gt lt LF gt CMGL lt index gt stat lt length gt lt CR gt lt LF gt lt pdu gt Otherwise CMS ERROR lt err gt CMGL list of supported lt stat gt s AT CMS ERROR message service failure result codes Value definitions lt en gt Values used by common messaging commands 0 127 Values from GSM 04 11 Annex E 2 128 255 Values from GSM 03 40 section 9 2 3 22 300 ME failure 301 SMS service of ME reserved 302 Operation not allowed 303 Operation not supported 304 Invalid PDU mode parameter 310 SIM not inserted 311 SIM PIN necessary 312 PH SIM PIN necessary 313 SIM failure 314 SIM busy 315 SIM wrong 320 Memory failure 321 Invalid memory index 322 Memory full 330 SMSC address unknown 331 No network service 332 Network timeout 500 Unknown error 60 Technical reference section Fax operation conforming to TR 29 2 The GSM module functionally supports the following commands as per the future ElA TIA 592 standard or acknowledges them with OK For more information contact ElAs sociation 2001 Eye Street N W Washington D C 20006 USA Tel 1 202 457 4900 and specify PN 2388 Commands and result codes Prompts AT FDT AT FET AT FDR Commands and result codes Messages AT4FDCS AT4FDIS AT FDTC ATAFCFR AT FTSI AT4FCSI AT4FCIG AT4FHTAT 4FHR AT FCON AT 4FET AT FPTS AT FHNG Setting parameters AT FCLASS AT FMFR AT FM DL AT F REV AT FDCC AT FDIS AT FDCS A
17. at any time when you load it using the AT amp F command The GSM Module M1 allows you to modify the active con figuration profile by means of AT or S register commands These options will be de scribed in subsequent sections When you switch off the GSM module any changes you made to the active configuration profile are lost When you switch it on again the active configuration profile once again corresponds to the factory configuration How ever the GSM module has two nonvolatile memory blocks in which you can store con figuration profiles AT amp Wn command page 29 These blocks are user profiles 0 and 1 When you switch on your system the GSM module loads the user profile that you set by means of the AT amp Yn command For more information see the section entitled AT amp Yn Configuration at powerup Please note When the module is supplied both user memories contain the factory profile 24 Technical reference section AT amp F Load factory profile This command allows you to load the factory profile that was supplied with the GSM module AT amp F Option Result AT amp F If your GSM module stops functioning due to a faulty configuration this command resets the module to the factory configuration AT amp V Display configuration The AT amp VO command allows you to display the active configuration profile on the screen Enter AT amp V The GSM module then transfers the information
18. by lt CR gt and lt LF gt ATI Displays firmware checksum The GSM module transmits 3 numeric ASCII characters followed by CR and lt LF gt ATI2 Checks firmware checksums As the result the GSM module retums the OK or ERROR result code followed by CR and lt LF gt ATIS Displays GSM module s operating modes GSM 2400 bit s duplex asynchronous transparent V 22bis GSM 4800 bit s duplex asynchronous transparent V 32 GSM 9600 bit s duplex asynchronous transparent V 32 GSM 2400 bit s asynchronous transparent V 110 ISDN GSM 4800 bit s asynchronous transparent V 110 ISDN GSM 9600 bit s asynchronous transparent V 110 ISDN GSM Fax transparent 2400 4800 7200 9600 bit s G3 Automatically adapts to PC baud rate ATI9 Displays GSM module s version ID The GSM module transmits its ID 69 Technical data General Type Housing Dimensions Weight Memory Input voltage Nominal voltage Input current Class of protection Temperature range V 24 interface Connector Pin assignment PIN DIN Logic Baud rates Parity Character format Stop bits Level 70 M1 Plastic 116 x 67 x 30 mm 157g Flash EPROM 8 Vto 424 V DC 13 2 V DC Max 500 mA II 20 C to 55 C operating 40 C to 70 C storage 9 pin DSUB female to DIN 41652 com 109 Data Carrier Detect Receive Data out EIA Transmit Data in V 24 asynchronous 2400 19200 baud autobaud
19. interrupted ATOn Retum to transparent mode If you wish to interrupt the data flow only briefly you can use the ATOn command to retum your GSM module to transparent mode i e the data flows once again ATOn n 0 ously switched to command mode Switches the GSM module back to transparent mode when it was previ Setting the transfer rate The GSM module supports the following transfer rates Rate Bearer Corresponding modem types Bit s service 2400 Analog modems conforming to V 22bis ISDN adapter to V110 ISDN 4800 Analog modemso conforming to V 32 with fallback ISDN adapter to V 110 ISDN 9600 2 Analog modems conforming to V 32 ISDN adapter to V110 ISDN To change and permanently set the rate for the radio link use the ATBn command 24 25 6 20 Technical reference section Your PC is set to 19200 baud i e higher than the maximum GSM transfer rate of 9600 bit s This means that the GSM module receives more data from the PC than it can transfer to the GSM network In order to prevent a data overflow the module must be able to interrupt the data flow from the PC This is accomplished by means of the RTS CTS hardware data flow control ATBn Select GSM module s operating mode The ATBn command also allows you to set the GSM module s operating mode perma nently for all connections ATBn n 71113 25 2729 70 99 Result Option z 7 Bit s Synchronism Distant station ATB99 Automatical
20. maximum of 30 lines is displayed ATEn Command echo The ATEn command affects the echo of characters that the GSM module receives from your computer when the GSM module is in command mode ATEn n 0 1 Command echo off Select the ATEO setting when the computer itself is echoing keyboard entries on the screen and no command echo is expect ed from the GSM module Please note If you enter the ATEO command and your computer is expecting character echo the computer will no long er display the entered characters on the screen You are then working blind Command echo on Select the ATE1 setting when your computer is con figured to expect the characters received by your GSM module to be re turned Factory configuration ATQn Activate and deactivate result codes The ATQn command allows you to control the transmission of result codes as acknowl edgments to AT commands e g OK ERROR RING Option Result ATQO Outputs result codes ATQ1 Suppresses result codes Important for unattended operation 26 Technical reference section ATXn Extended connect message ATXn n 0 4 ATXO The GSM module retums only the CONNECT code as soon as a Satisfac tory connection has been set up A busy signal is ignored ATX1 The GSM module transmits an extended connect message with transfer rate information CONNECT xxxx as soon as a Satisfactory connection has been set up For more information on extended result co
21. string it is not stored and the ERROR code is displayed on the screen The AT amp Zn command itself is not stored with the dial string ATDS n Dial stored telephone number The ATDS n command allows you to dial the n th stored telephone number n repre sents a value from 0 to 3 This command dials the dial string as though it were a telephone number entered directly via the keyboard Enter ATDS 0 GSM module 01999341 and initiates the dialing procedure AT amp Wn Store configuration When you modify the active configuration profile using AT or S register commands these modifications exist only in the RAM and are deleted when you switch off your GSM module When switched on again the GSM module loads the configuration from a nonvolatile memory The AT amp Wn command allows you to store your modifications in this nonvolatile memory Two separate memory areas are available for this purpose AT amp Wn n 0 1 Option Result AT amp WO Stores the active configuration profile in user memory 0 ATSW1 Stores the active configuration profile in user memory 1 Consequently you always have two different user profiles in your GSM module ready to be called up 29 Technical reference section AT amp Yn Configuration at powerup The AT amp Yn command allows you to determine which user profile O or 1 will be load ed at powerup AT amp Yn n 0 1 Option Result AT amp
22. tant station is cleared down AT amp D3 The transition of DTR to OFF has the same effect as an AT amp F command i e the factory configuration is loaded An existing connection to the dis Data flow control Even if your PC is set for example to 19200 baud the maximum GSM rate that can be used is 9600 bit s A higher setting causes the GSM module to receive more data from the PC than it can transfer to the GSM network In order to prevent a data over flow it must be able to interrupt the data flow from the PC This is accomplished by means of the RTS CTS hardware data flow control which switches over the COM in terface so as to interrupt the RTS computer and CTS GSM module control lines Memory commands The GSM module is equipped with a 128 byte nonvolatile RAM in which the values of the modifiable S registers and other values are stored This section describes the val ues how to store them and how to use them 28 Technical reference section AT amp Zn x Store telephone number The user memory can hold 4 telephone numbers The AT amp Zn command allows you to store a dial string in telephone number memory n n represents a value from 0 to 37 Enter AT amp ZO 01999341 GSM module OK The AT amp Zn command saves only digits and special characters 1 It ignores punc tuation spaces and all meaningless characters The dial string must contain no more than 20 characters If you enter a longer dial
23. M module to fax all incoming calls will be answered by the FAX service AT CXXSN Command Result AT CXXSN Displays the value currently set for CXXSN AT CXXSN lt SN mode gt Sets the single numbering receive mode to the rele vant mode AT CXXSN oe alist of values for single numbering receive modes 44 Technical reference section AT CXXSN Command AT CXXSN Result code CXXSN lt 0 1 2 gt lt SN mode gt Meaning of the mode 0 The next incoming call will be answered by the voice service TS11 1 The next incoming call will be answered by the voice fax service This is required if your network operator supports only TS61 and not TS62 2 The next call will be answered by the fax or data service depend ing on the active application on your PC If a fax application is active the module answers the call as a fax call You wish to set the SN mode to fax data Enter GSM module AT CXXSN 2 OK 45 Technical reference section AT CXXMOC Parameterize for outgoing calls The following services are available for fax transmission in GSM Teleservice 61 TS61 Combined voice and fax This service exists as an imitation of combination fax machines and allows you to change from a voice connection to fax transmission Teleservice 62 TS62 Automatic fax This service is purely for faxing If your network operator supports only one of these service
24. SIEMENS GSM Module M1 User Guide v 24 Contents GSM Module M1 Product description escritos a A A END E 5 Features x A O em De erac EN 5 Notes on safety ooooccco mn 5 Description of the interfaces 0 0 ccc 6 Al x s ip face E teen Menta Le od E coh ate ts 6 V 24ntetface Ad ote e ell rn 6 Hybrid connector manufacturerspecific 2 iles 6 Function BED 32 scuta ra Geel AA S ERR EA E RR 6 Installation startup Mounting the module oococcoccccc eee n 7 Power supply power consumption 0ococccocccc nens 7 Gable assignmient oec reo pru gc aeg 7 Switching the GSM module on off 0 00 cee 7 Voltage rarige accent eas el eee Ar RR alan eie einen e es e 7 Overvoltage undervoltage 60 cece 8 Protection on board network connection ssesssses erre 8 Powerconsumption isi ea e eem 8 Setting testing the COM interface o ooocccoococcocc es 8 Setting the GSM radio transfer rate o ooocccococononncr 9 Registering in the GSM network PIN entry sss o 10 Setting up and clearing down connections ccc eee ees 10 Tro bleshooting eee ete Ren ree ERU Eg e Nac RT 11 GSM module can still be accessed ooococcccococ o 11 Connection cannot be set Up sssslsseeee eres 12 OWLIYOGITOIS o a ee a E ea E RR a 12 System OMS ccoo 12 Incorrect characters ONSCrEEN 2 o 13 GSM module does not dial 0oooocococcocccc 13 Cannot re
25. T FLID AT FPTS AT FBUG Setting additional parameters AT FCR AT FAAAT FBUF AT FBOR The S registers The active configuration profile for the GSM M1 module is stored in S registers Each register is 8 bits long A number of S registers are reserved and must not be modified The other registers can be read by means of the ATSn command or overwritten using the ATSn command You can modify some S register values using AT commands This saves you from having to access the values directly in the S register i e you do not have to familiarize yourself with the actual values and meanings of the individual bit positions within the S register This section provides an overview of the S registers The factory configuration is printed in bold type 61 Technical reference section ATSn Read an S register The ATSn command allows you to read the n th S register Parameter n must be an integer and designate an S register Enter ATSO GSM module 003 OK Enter ATSO S7 GSM module 003 030 OK In response to the ATSn command the GSM module displays the register contents as athree digit decimal number If more than one register is read on one command line the GSM module displays the register contents in the order in which the registers ap pear in the command string The GSM module transmits a CR and lt LF gt character after each set of register contents is displayed If the command syntax is incorrect the GSM module r
26. Technical reference section Possible error messages in response to an AT C command 0 Phone failure 1 No connection to phone transceiver part of M1 2 Transceiveradaptor link reserved 3 Operation not allowed 4 Operation not supported 5 PH SIM PIN required 10 SIM not inserted 1 SIM PIN required 12 SIM PUK required 13 SIM failure 14 SIM busy 15 SIM wrong 16 Incorrect password 20 Memory full 21 Invalid index 22 Not found 23 Memory failure 24 Text string too long CPBW 25 Invalid characters in text string 26 Dial string too long 27 Invalid characters in dial string 30 No network service 31 Network timeout 100 Unknown Enter AT CREG GSM module CME ERROR 10 34 Technical reference section AT CREG Network registration Data transmission is possible only if the GSM module is registered in the network This command provides you with information on the module s registration status in the net work registration status CREG STATUS n gt ATSCREG v AT CREG Command AT CREG Result code CREG lt mode n gt lt CREG status gt lt mode n gt o Changes in registration status are not forwarded to the PC lt CREG status gt status 0 3 STATUS n Explanation Not registered No network operator found the GSM module ME is not search cannot register nor is it searching for a new ing for a new o
27. YO The profile in user memory 0 will be loaded at powerup Factory configuration AT amp Y1 The profile in user memory 1 will be loaded at powerup Please note When the module is supplied both user memories contain the factory configuration ATZn Load user profile Regardless of how your active configuration profile is currently set up the ATZn com mand allows you to reload your own user profile at any time Any existing connection is cleared down ATZn n 0 1 Option Result ATZO Load user profile 0 ATZ1 Load user profile 1 AT C commands for GSM Special AT commands are used for controlling GSM related functions of the GSM Module M1 such as PIN entry network selection and IM El output and for controlling the short message service These commands start with AT C and are specified in the Tech nical Specifications TS GSM 0707 for the general part and GSM 0705 for SMS from the ETSI European Telecommunications Standards Institute Standardization is not yet com plete Some of the commands implemented in the GSM Module M1 may still be changed within the framework of the standardization process For the purpose of future compatibility these commands are always prefixed by CXX Enter AT CXXSN GSM module CXXSN l voice FAX The implementation of the AT C commands for GSM related functions of the GSM Module M 1 is based on TS GSM 0707 Version 0 10 30 Technical refe
28. You enter the correct PIN Enter AT CPIN 1234 GSM module OK You enter an incorrect PIN Enter AT CPIN 1234 GSM module CME ERROR WRONG PASSWORD AT CPIN2 Enter PIN2 and query PIN2 blocks Phase 2 includes SIM cards with an FDN phonebook You can activate a block on the card in order to restrict the telephone numbers that can be called to those contained in this directory To modify these entries you must enter PIN2 with the aid of the AT CPIN2 command All entries are similar to those for the AT CPIN command This command is accepted only if the card also supports this functionality Please note PIN2 protects the FDN phonebook In orderto modify the FDN phonebook by means of the AT CPBW command you must first enter PIN2 If you have not yet done so an error message is retumed After entering PIN2 you can read or write any number of directory entries without having to enter PIN2 each time As soon as you use a command that is not related to the phonebook PIN2 is forgotten It is also forgotten if you do not access the phonebook for a period of 5 minutes AT4CPIN2 Command Result AT4CPIN2 Queries whether PIN2 has already been entered must still be entered or is blocked AT CPIN2 lt PIN gt PIN2 entry PIN2 can comprise up to 8 positions new PIN gt If PUK2 must be entered PIN2 is entered at the same time It is then stored as a new PIN2 AT4CPIN2 Result code Meaning
29. ating in transparent mode i e entries you make via the keyboard are transmitted to the distant end Pause Enter Interrupt command Press the key three times in rapid succession Pause M1 returns OK Changes to command mode Enter ATH Command to go on hook M1 returns OK The connection is cleared down M1 has gone on hook For more information see Technical reference sec7tion Troubleshooting GSM module can still be accessed As long as the GSM module is still responding to commands you can enter the AT amp FO command to load the factory configuration In any case this will permit further opera tion Check whether the communication program is configured for the serial interface to which the GSM module is connected e Check the parameters of your communication program The following settings will always work Transfer rate 2400 19200 baud Data bits 8 Parity None Stop bits 1 Duplex Full Check whether other programs e g printer spooler are interfering with the function ing of the communication program Restart your computer without additional pro grams with the operating system alone switch off and then on Installation startup Connection cannot be set up A number of factors can prevent connection setup Own errors No SIM card in the module The PIN or another block is not unblocked The GSM data module is not registered i e it has not or has not yet been able to register
30. but report BUSY Same as ATX3 Load user profile n DCD always ON DCD line ON only in the presence of carrier signal connection Ignore DTR status At DTR gt OFF Command mode without going on hook At DTR gt OFF Go on hook command mode auto answer off At DTR gt OFF Go on hook factory configuration same as AT amp F Load factory configuration Terminate an active test Initiate local digital test loop Display current configuration Store current configuration as user profile n Load user profile n at powerup Overview of AT commands AT amp Zn x AT Dn AT Store telephone number x in memory n Automatic dialing with DTR Fax commands GSM AT commands GSM 0707 AT4CGMI AT4CGMM AT4CGMR AT4CGSN AT4CHUP AT4CEER AT4CM EE AT4CREG AT4COPS AT4CPIN AT4CPIN2 AT4CPWD AT4CSQ AT4CKPD AT4CXXSN AT4CXXMOC AT4CPBS AT4CPBR AT4CPBW AT4CBST AT4CRC AT4CLIP AT4CPAS AT4FCLASS AT4CXXCID Display manufacturer ID Display model ID Display version of GSM module Display serial number IM EI Terminate all calls Display reason last call was disconnected Extended error messages to GSM 0707 Display registration status Commands relating to network operator selection Enter PIN and query blocks Enter PIN2 and query PIN2 blocks Change PIN Display signal quality information Key simulation Single numbering parameterization Parameterize for outgoing calls Select phonebook Read phonebook entry Write phon
31. ceive fax ett 13 Overview of AT commands General AT commands 0 ccc eee eee hrs 14 GSM AT commands GSM 07 07 0 ccc eee ee eens 15 SMS AT commands GSM 07 05 1 ccc cc uas 15 Contents Technical reference section The AT Standard zs A e a 16 AT command line prefix ao reran mera cc tts 16 Connecting to your GSM module 00 0 c cece eee 16 Command syntax of the AT standard 0 c cece eee 16 Loading the factory configuration and displaying a configuration 17 ATVn Result codes ici hese cbr Bee RO ERAI epee a epus 17 A Repeat previous command line 0 0 02 eee 18 Setting up and clearing down connections cc eects 19 Operating modes susanna eaaa 19 Command MO 19 Transparent mode iiia eiia ige K E E ae 19 ESCAPE command oie aa Rah e k ee datum cutie dts ahat 19 ATH GO on hook iiia iasi maiii i aati iai aE aa ai ia a iaa i aa 20 ATOn Retum to transparent mode llle eese 20 Setting the transfer rate oooooocococcoocrrr res 20 ATBn Select GSM module s operating mode lslseslsssusss 21 ATD Dial a telephone number 0 000 eres 22 Validdial strings sieer mee opted Rb CE RO x ES eo 22 ATDL Redial last telephone number used 0000 cece esee 22 AT Dn Automatic dialing with DTR ooooococcoccoccnc ee 23 ATA Answer a call m srk eerie seh ee CEU MET MRNA ED 23 ATSO n Auto answer mode
32. ces will be supported in your network Your network operator has not released your SIM card for the fax data modes Ask your network service operator to release these features 13 Overview of AT commands General AT commands A ATA ATDx ATDIx ATDL ATDS n ATEO ATE1 ATH ATIn ATIO ATIL ATI2 ATI8 ATI9 ATOO ATQO ATQ1 ATSn x ATSn ATSO n ATSO 0 ATVO ATV1 ATXO ATX1 ATX2 ATX3 ATX4 ATZn AT amp CO AT amp C1 AT amp DO AT amp D1 AT amp D2 AT amp D3 AT amp F AT amp TO AT amp T1 AT amp V AT amp Wn AT amp Yn 14 Repeat previous command line Switch to command mode when connected Answer call Dial the dial string x Dial ISDN number x Redial last telephone number used Dial stored telephone number Disable command echo Enable command echo Disconnect existing connection Display product data Display product code for GSM module Display software checksum Determine firmware ROM checksum Display supported modes Display device ID Switch from command mode to transparent mode Display result codes Do not output result codes to computer Assign value x to S register n Read value of S register n Go off hook after n th ringing signal n 1 5 No automatic answering of calls Display result codes as digits Display result codes as text Display connection without baud rate Ignore busy signal Display connection with baud rate Ignore busy signal Same as ATX1 Same as ATX1
33. cuments 00 0 c eee cette ees 73 ENSI COMUAGE sande t tennis ERN 73 General information CESTO tidad E ia a ed 74 SOIVICO sata a aah be at ata la a EA 74 GSM Module M1 Product description The GSM module is a GSM terminal for transmitting data faxes and SMS short mes sage service text messages in GSM networks GSM global system for mobile com munication The GSM Module M1 comprises the following components GSM transceiver Data and power supply unit Serial interface V 24 for data transmission and control Manufacturer specific interface for DC power supply external antenna and audio signals When the GSM Module M1 is registered in the network it serves as a standard mo dem for fax and data transmission for a computer connected to the V 24 interface Spe cial AT C commands as per GSM 0707 or GSM 0705 for controlling GSM related functions PIN entry network selection etc and for the short message service are available via the V 24 interface Features The GSM Module M 1 offers the following features Transparent data transmission at 2400 4800 and 9600 bps BS24 25 26 Group 3 Class 2 fax transmission conforming to TR 29 2 at 2400 4800 7200 and 9600 bps Short message service mobile originated SMS MO TS22 Short message service mobile terminated SMS MT TS21 Notes on safety The GSM Module M 1 conforms to GSM standards However note that the device can still em
34. ddress Type of address octet in integer format 57 Technical reference section AT CMGR Read message This command allows you to display the short message addressed by lt index gt Action command syntax Possible response s CMGR lt index gt If PDU mode CMGF 0 and command successful CMGR stat lt length gt lt CR gt lt LF gt lt pdu gt Otherwise CMS ERROR lt err gt lt index gt Integer type value in the range of location numbers supported by the associated memory lt stat gt Integer type in PDU mode indicates the status of message in memory O Received unread message i e new message 1 Received read message 2 Stored unsent message 3 Stored sent message 4 All messages AT4CMGS Send message This command allows you to send a short message from the TE to the network If the short message is successfully sent the message reference lt mr gt is retumed to the TE Action command syntax If PDU mode CMGF 0 If send is successful CMGS lt length gt lt CR gt PDU is given lt ctr Z ESC gt CMGS lt mr If send fails CMS ERROR lt err gt lt mr gt GSM 03 40 TP message reference in integer format 58 Technical reference section AT CMGW Write message to memory This command allows you to store a short message in the memory lt mem2 gt The memory location is retumed in lt index gt Action command syntax If PDU mode CM GF 0 CMGW index
35. des see the ATV1 command A busy signal is ignored ATX2 Same as ATX1 ATX3 As in the case of ATX the GSM module transmits an extended connect message A busy signal is detected and if applicable the BUSY code is retumed ATX4 As in the case of ATX the GSM module transmits an extended connect message A busy signal is detected and if applicable the BUSY code is retumed Control line options AT amp Cn Data Carrier Detect DCD options This command affects the DCD line connected to the computers serial interface AT amp Cn n 0 1 AT amp CO The GSM module sets the DCD control line connected to the computer s serial interface to ON regardless of the data carrier status of the distant station AT amp C1 DCD specifies the data cartier status of the distant station DCD ON indicates that a connection exists 27 Technical reference section AT amp Dn Data Terminal Ready DTR options AT amp Dn n 0 3 AT amp DO The GSM module ignores the status of the DTR control line connected to the COM interface AT amp D1 When the DTR line switches from ON to OFF the GSM module changes to command mode The existing connection to the distant station is not cleared down deactivates auto answer mode Auto answer can be reactivated by AT amp D2 When the DTR line switches from ON to OFF the GSM module sets up a connection to the distant station switches to command mode and resetting DTR to ON
36. e s data format does not match that of the distant sta tion Set the parameters in your communication program accordingly data bits parity stop bits to 8 N 1 GSM module does not dial Cause Remedy Cause Remedy Cause Remedy A cable has been disconnected Make sure that all cables are securely connected Tighten all connecting screws The GSM network does not or does not yet support the fax data modes The GSM module returns NO CARRIER Ask your network operator when these modes will be supported in your network The GSM module has activated barred dialing Switch the GSM module off and then on Cannot receive fax Cause Remedy Cause Remedy Cause Remedy Some fax programs that support TR 29 2 Class 2 expect the bits of the fax code to arrive in an order different from the one defined in the SP2388 specification If the GSM module transmits the fax data bits to the computer in the wrong order the fax program cannot receive whole fax pages For this reason the GSM module has been equipped with the AT FOPT n command Enter one of the following two commands and then check whether the system is functioning correctly AT FOPT L1 0 bit order as specified in TR 29 2 Class 2 Draft SP2388 AT FOPT 11 opposite bit order fac tory configuration for all countries The GSM network does not yet support the fax data modes The GSM module retums NO CARRIER Ask your network operator when these servi
37. e cable included in the scope of supply The relevant wires are marked as follows Red POWER 8 V 424 V DC Violet IGNITION ON OFF Brown GND Ground Switching the GSM module on off The GSM Module M 1 switches on when a positive voltage of 5 24 V is applied to IG NITION if a voltage of 8 24 V is simultaneously applied to POWER The module switches off when a voltage of less than 1 V is applied to IGNITION An existing call is correctly disconnected This voltage must be applied for a minimum of 550 ms Be sure to switch off the module using IGNITION simply disconnecting the power sup ply at POWER can damage the SIM if it is being written to at the time Voltage range Nominal voltage 13 2 V DC Extreme voltage 8 32VDC Installation startup Overvoltage undervoltage Correct operation of the M1 in send mode cannot be guaranteed if input voltages fall below 8 V When input voltages exceed 32 V the supply voltage is disconnected in order to pro tect the electronic components from an overvoltage Input voltages gt 100 V destroy the module Protection on board network connection When installed the M 1 must be protected by a medium time lag fuse with a nominal value of 1A or a fast fuse with a nominal value of 16 A For vehicle installation the M 1 must be directly connected to the battery Do not connect the ground cable to the power supply since this could result in a short circuit via the antenna cable
38. eason why the last call was disconnected The information retumed can be useful if there were problems with connection setup or if a connection was interrupted AT CEER Option Result AT CEER Displays reason last call was disconnected 32 Technical reference section Enter AT CEER GSM module CEER 10 08 OK AT CMEE Report mobile equipment error If an error occurs while you are processing acommand by means of AT C the problem may be located in the data or GSM section of the M 1 For example if a data connection is set up the phonebook cannot be accessed at the same time Or is the problem in the SIM card Is it inserted or has the PIN been omitted Extended error messages help you isolate errors more easily However you must first enable these messages from the PC using this command AT CMEE Option Result AT CMEE lt mode n gt Resets the mode AT CM EE Displays the way in which error messages are reported to the PC AT CMEE Displays the modes supported by the M 1 in the form of a complete list of the values that can be assumed by lt mode n gt lt mode n gt n 0 2 0 The error messages are not interpreted but generally only an ERROR code is returned 1 When an error occurs an extended message to the PC is generated that specifies the cause of error as a number 2 Same as 1 except that the error is output as text 33
39. ebook entry Select bearer service type Cellular result code Calling line identification presentation Phone activity status Select mode Card identification SMS AT commands GSM 0705 AT4CSMS AT4CPMS AT CM GF AT CSCA AT CMGR AT CMGS AT CM GW AT CMGD AT4CNMI AT4CM GL Select message service Preferred message storage Message format Service center address Read message Send message Write message to memory Delete message New message indications List messages Please note The GSM module also recognizes some AT standard commands that it does not execute but it ignores these commands and retums either OK or ERROR 15 Technical reference section The AT standard With the development of intelligent modems an command language was introduced in the U S called the AT standard Overthe past few years this language has been con sistently enhanced and has gained intemational acceptance Most modems and com munication programs work with this command language or can be set to use it AT command line prefix The AT standard is a line oriented command language Each command line must begin with the letters AT with the sole exception of the A command The commands are in troduced atthe end of this section The letters AT are also known as the attention code The attention code signals your GSM module that one or more commands will follow The GSM module examines this command line prefix Connecting to your GSM mod
40. etums ERROR ATSn x Write to an S register The ATSn x command allows you to instruct your GSM module to store the value x in register n n and x must be integers and decimal numbers n must designate an S register x must be from 0 to 255 Enter ATSO 3 GSM module OK This command sets register SO to the value 3 i e the GSM module automatically an swers a Call after 3 ringing signals The GSM module acknowledges the command with OK to indicate that the command was executed and a new command can be pro cessed 62 Technical reference section Binary and decimal values in S registers Although you enter values for S registers as decimal numbers like all other values that are stored in PCs they are stored in the registers in binary format Bit 7 6 5 4 3 2 1 0 Binary 1 1 1 1 1 1 1 1 Decimal 128 64 32 16 8 4 2 1 The value of the register is obtained by adding together the values of all enabled bits In the example all bits are enabled 1 and the result is the number 255 Since all bits can also be disabled 0 a total of 256 statuses can be stored in these 8 bit positions This means that more than one parameter can be stored in one register Corrs Decimal Binary 3 00000011 43 00101011 100 01100100 If a command applies only to bits 3 4 and 5 of an S registers up to 8 different statuses can be defined Option Bit 5 Bit4 B
41. following format is retumed in response to the AT COPS com mand AT COPS Command AT COPS Result code COPS lt mode n gt lt format f gt lt operator gt 36 Technical reference section lt mode n gt n 0 3 Mode n Meaning Explanation 0 Automatic Network operator is selected automatically 1 Manual Network operator is selected manually 2 Sign off of network The GSM M 1 is signed off of the network 3 Sets format f only You can select the format for displaying the network operator This is true only of the read command AT COPS lt format f gt n 0 2 0 Long alphanumeric The operator is displayed in 16 character alpha format numeric format 2 Numeric format The operator is displayed in numeric format Operator Network operator The network operator is displayed in format f Enter AT COPS GSM module COPS 0 0 Operator Name OK AT COPS Display list of available network operators This command instructs the module to display a list of available network operators The list must first be generated That process can take up to 60 seconds AT COPS Command AT COPS Result code COPS List with lt STATUS n gt lt operator alphanumeric format gt lt operator numeric format gt 37 Technical reference section Evaluate the result code using the following table
42. ged because the old PIN was incorrect 41 Technical reference section AT CSQ Signal quality The quality of the radio connection between the GSM module and the base station varies depending on environmental conditions This command provides you with infor mation on the current reception quality AT CSQ Command Result AT CSQ Displays current receive values AT CSQ Displays a list of values representing receive levels and receive errors AT CSQ AT CSQ Command AT CSQ Result code CSQ lt receive level gt lt receive errors gt lt receive level gt 0 113 dBm or less 1 111 dBm 2 30 109 53 dBm 31 51 dBm or greater 99 Unknown or cannot be detected lt receive As a percentage See GSM 05 08 section 8 2 4 Range errors gt of Parameter 99 Unknown or cannot be detected Enter AT CSQ GSM module csQ 10 1 OK 42 Technical reference section AT CKPD Keypad control This command allows you to simulate keystrokes on the GSM mobile telephone Input corresponds to the actuation of keys on the Siemens S3COM AT CKPD Command Result AT CKPD lt key gt Instructs the GSM module to simulate the key lt key gt AT CKPD Displays a list of keys that are supported AT CKPD Command AT CKPD Result code CKPD 0123456789 4CDEISUXYZ lt key gt Meaning of the keys 0
43. hanges to command mode when it detects falling edge at DTR ON gt OFF Same as 1 but also disconnects call GSM module is initialized when it detects falling edge at DTR ON gt OFF DTR options AT amp Dn 0 DCD always ON 1 DCD options AT amp Cn DCD with valid carrier IN IN reme S LA 66 3 4 Technical reference section O OSOS reference section mmm qme Mem IN Bem DIN Bem IN Bem DIN i Result code options ATXn Same as ATXO Reserved Reserved Reserved Same as ATX1 Same as ATX2 Same as ATX3 Same as ATX4 NOUBWNEFO Reseved S23 Bit rate and parity EI CN Reserved Reserved 2 Transfer rate at the 2400 bit s COM interface 4800 bit s 3 9600 bit s 19200 bit s Reserved Reserved None Reserved Reserved 5 Reserved WNRO NOUBWNEFO 67 Technical reference section AT amp Tn Test functions Software test loops If you can still address your GSM module with your communication program check module functioning using the software test loops Each test is initiated by means of an AT command Be sure to perform the tests in the sequence described AT amp TO Terminate an active test You can terminate an active test at any time Step 1 Enter the escape command The GSM module switches to command mode Step 2 Enter the AT amp TO command The test is terminated Any commands that follow the AT amp TO command on the c
44. ical reference section AT CPBW Write phonebook entry This command allows you to write an entry to the phonebook You have the option of entering the telephone number with or without a name AT CPBW index number type text Number Type Text Stores the entry with the position number index in the phonebook If you omit the index an available position is sought otherwise the entry is written to the specified position regardless of whether this position is already being used If you specify only an index without a number or text this means that you wish to delete the relevant entry Number to be written to the phonebook International 145 Other 129 Type of number can be omitted If no type is specified the type is automatically generated from the telephone number A character at the beginning of the telephone number means that its type is international Name to be stored with this number 49 Technical reference section AT CBST Select bearer service type This command selects the bearer service with data rate and the connection element to be used when data calls are originated AT CBST AT CBST lt speed gt Selects new speed name and ce lt name gt lt ce gt AT CBST Displays speed name and ce AT CBST Displays list of supported speed list of supported name and list of supported ce Connection Ele ments lt speed n gt n 0 4 6 768 70 71 s i eno a mis
45. in the network The M1 was manually set to an unavailable network operator by means of COPS 1 The M1 was signed off of the network by means of COPS 2 Invalid characters in the dial string Dial string contains more than 30 characters Command line contains more than 39 characters System errors 12 A connection is already set up The call is not answered within 60 seconds after dialing because the distant station iS not ready is not a modem does not support the selected operating mode The GSM module retums NO CARRIER The distant station is busy The GSM module retums BUSY Before the connection can be set up the GSM module receives a signal from the computer and returns NO CARRIER If no connection is set up the GSM module goes on hook and retums to command mode The GSM network does not or does not yet support the fax data modes The GSM module retums NO CARRIER The GSM module is not registered in the GSM network It retums NO DIALTONE You have manually dialed a forbidden network operator the radio modem no longer registers Installation startup Incorrect characters on screen Duplicate characters on screen Cause Remedy Your communication program is set to half duplex or echo Enter ATEO to deactivate command echo in command mode or deactivate the echo in the communication program Only the characters from the distant station are incorrect Cause Remedy The GSM modul
46. ing None 8 data bits 1 To CCITT Recommendation V 28 DTR 107 105 106 Technical data Hybrid connector manufacturer specific Pin assignment Meaning of pins A eem EJ ws Rem 5 we Ree s xe Rem s mg Reb Activate deactivate 0 24 V prm m 13 GND Ground 14 GND EE Ground Antenna Impedance 50 ohms 71 Technical data GSM modes Fax CCITT Rec Routes Info transf mode Clock mode Connection elem Structure Radio channel Intermed rate User rate Teleservice Data GSM Rec Routes Info transf mode Clock mode Connection elem Structure Layer 2 protocol Data bits Parity bits Bits char Stop bits Radio channel Intermed rate User rate Modem type Bearer service SMS GSM Rec Routes Mode Teleservice 72 CCITT T 30 T 4 MOC and MTC FAX G3 Synchronous Transparent Unstructured Full rate 8 or 16 kbit s 2400 4800 or 9600 bit s TS 61 TS 62 GSM 701 702 4 21 MOC and MTC 3 1 Khz audio ex PLMN analog or UDIALO ISDN Asynchronous Transparent Unstructured NAV 8 None Always 10 bits char 1 Full rate 8 or 16 kbit s 2400 4800 or 9600 bit s V 22bis V 32 BS 24 BS 25 BS 26 GSM 03 40 0705 SMS MO and MT PDU mode TS22 TS21 GSM documentation GSM reference documents The following GSM reference documents are recommended
47. interface can be set for example using a ter minal program The ATBn command allows you to set the transfer rate in the GSM net work Enter the ATI8 command to display the current list ATBn n 711 13 25 2729 70 99 Option Effect Bit s Synchronism Distant station ATB99 9600 Asynchronous Mode set to automode ATB7 2400 Asynchronous V 22bis ATB11 4800 Asynchronous V 32 ATB13 9600 Asynchronous V 32 ATB25 2400 Asynchronous V110 ISDN ATB27 4800 Asynchronous V110 ISDN ATB29 9600 Asynchronous V110 ISDN ATB7O 9600 Fax Fax Group 3 Enter ATB13 M1 Permanently switches mode to 9600 bit s Enter ATB7 M1 Permanently switches mode to 2400 bit s Installation startup Registering in the GSM network PIN entry In order for the GSM module to access the GSM network you may have to enter the PIN for the SIM card You can do this using the AT CPIN command The AT CPIN command allows you to inquire whether or not you must enter a password and what type of password must be entered The following blocks are possible PIN or PUK Device code or PUK of the device code Network link the network operator blocks the device so that without a network PIN it runs only in its own network If you wish to operate the device in another net work you must enter the PIN or PUK Service operator link similar to the network
48. isplays SIM number AT C commands for the short message service SMS The module supports several of the AT C commands specified in TS GSM 0705 for using the short message service with the M 1 In order to provide an application on the connected computer with complete information on the short messages the M1 sup ports PDU mode A PDU protocol data unit contains almost all the information relating to a short message that is transferred in the GSM network For a more detailed descrip tion of the various PDUs see TS GSM 03 40 which describes the implementation of the short message service The implementation of AT C commands for SMS is based on TS GSM 0705 Version 4 4 0 55 Technical reference section AT CSMS Select message service This command allows you to select the short message service Parameter command syntax Command Possible response s CSMS lt service gt CSMS lt mt gt lt mo gt bm CSMS ERROR lt err gt CSMS CSMS lt service gt lt mt gt lt mo gt bm CSMS CSMS list of supported lt service gt s Values implemented lt service gt 0 GSM 03 40 and 03 41 mt mo bm 0 Type not supported 1 Type supported AT CPMS Preferred message storage This command allows you to select the memory to be used for read and write operations Parameter command syntax Command Possible response s CPMS lt mem1 gt lt mem2 gt CPMS lt used1 gt lt totall gt
49. it 3 Dec 0 0 0 0 0 1 0 0 1 8 2 0 1 0 16 3 0 1 1 24 4 1 0 0 32 5 1 0 1 40 6 1 1 0 48 7 1 1 1 56 63 Technical reference section Bit position registers Registers in which a number of parameter values are stored are called bit position reg isters If you wish to modify the parameter values in these registers directly you must add up the decimal values of all the bits to be set and enterthe result using the ATSn x command Since calculating such values is somewhat complicated we recommend that you use AT commands to modify the values and do not write directly to the regis ter However here is an example of how to do so S register S22 Bit 7 Reserved value is 0 Bits 6 5 and 4 Connection messages ATXn command Bits 3 to 0 Reserved value is 0 You wish to enter the following parameter values Bit 7 Reserved value is 0 Isolated value binary 0 decimal 0 Positioned value binary 0 x x x x x x x decimal 0 Bits 6 5 and 4 Extended connect message ignore busy signal ATX2 Isolated value binary 0 1 0 decimal 2 Positioned value binary x 0 1 0 x x x x decimal 32 Bits 3 to 0 Reserved value is 0 Isolated value binary 0 O O 0 decimal 0 Positioned value binary x x x x 0 O 0 0 decimal O Decimal input and binary storage Bit 1 6 5 4 3 2 1 0 Binary 0 0 1 0 0 0 0 0 Decimal 128 64 32 16 8 4 2 1
50. it radiation and therefore must not be used or even switched on in certain envi ronments Leaving the GSM Module M1 switched on in airplanes is prohibited by law The module must not be used near service stations fuel depots chemical plants or blasting operations The module may also interfere with the functioning of electronic medical devices hearing aids pacemakers etc that are not properly shielded In case of doubt con sult your physician Do not touch the antenna during a call Using the GSM Module M1 in the direct vicinity of electronic devices radios tele visions PCs etc can cause slight interference GSM Module M1 Description of the interfaces The GSM Module M 1 has interfaces for the power supply for control and data trans mission for an extemal antenna and for a SIM card as well as an LED that indicates operating statuses These interfaces will be described below Fora detailed description including pin assignment see the section entitled Technical data SIM card The GSM Module M 1 must have a SIM card to operate in the GSM network To install this card press the yellow button to eject the carrier and insert the SIM in the carrier Then push the carrier into the housing making sure that it locks into place V 24 interface The serial interface is used for controlling the GSM Module M1 as well as for data fax and SMS transmission Connector 9 pin DSUB female conforming to DIN 41652
51. lease note In both cases result codes are made up of ASCII characters Long result codes must begin and end with lt CR gt and lt LF gt characters Short result codes only end with a lt CR gt character A Repeat previous command line The A command allows you to reissue the previous command line in its entirety This is the only command that is not preceded by AT and that does not have to end with lt CR gt Enter A is mainly used when the line was busy or the call was not answered In this case the GSM module repeats the dial command Enter AT D 01999341 GSM module BUSY Enter A GSM module Reissues the command D 01999341 18 Technical reference section Setting up and clearing down connections Once you have read through this section you will be able to use your GSM module to gether with your communication program to perform the following functions Interrupt a connection using the escape command Go off hook Setup a connection by manually dialing the telephone number Store atelephone number Dial a stored telephone number Answer a call Switch to auto answer Operating modes The GSM module operates in two different modes Command mode Transparent mode Command mode When you switch on your system the GSM module is in command mode and is ready to receive and execute your commands All characters that the GSM module receives via the COM interface in this mode are in
52. link but implemented by the service op erator rather than the network operator again you must enter PIN or PUK The PIN 4 8 positions is the PERSONAL IDENTIFICATION NUMBER and must be en tered to unblock the device You are allowed 3 attempts to enter your PIN If you enter the wrong PIN 3 times ina row the PIN is blocked and must be unblocked by means of a PUK PIN UNBLOCKING KEY You are allowed 10 attempts You can enter the PUK any number of times for the network link and service operator link Enter AT CPIN Queries the password to be entered GSM module CPIN SIM PIN PIN forthe SIM card must be entered Enter AT CPIN 1234 PIN entry M1 OK PIN was correct the SIM card can be accessed After entering the PIN you can enter the AT CREG command to determine whether the GSM module is registered in the GSM network Setting up and clearing down connections Normally you will set up connections with the aid of your communication program However you can also manually instruct your GSM module to set up and clear down a connection The simplest sequence would be as follows Load your communication program and enter the following command 10 Installation startup Enter AT amp F Loads factory configuration GSM module OK Enter ATD tel no The dial command M1 Dials the telephone number and informs you when it is successful CONNECT xxxx Xxxx is the baud rate for the connection The GSM module is now oper
53. list to find out which operators are forbidden and which are allowed Use the AT CREG command to find out whether or not the GSM module is registered You will also be unable to set up any connections if you have set mode n to 2 sign off of network AT CPIN Enter PIN and query blocks The PIN personal identification number is provided to prevent unauthorized use of the GSM module The PIN is usually a 4 position secret code If this block is activated you must enter your PIN before you can use the module s full range of functions When you query the status the system displays result codes relating to the chip card and tells you either that you must enter a PIN or that the chip card has already been read in which case PIN entry is unnecessary AT CPIN Command Result AT CPIN Queries the PIN that must be entered AT CPIN lt PIN gt PIN entry The PIN can comprise up to 8 positions lt new PIN gt If a PUK must be entered the PIN is entered at the same time It will then be stored as a new PIN AT CPIN CPIN READY M1 expects no further password All blocks are released and services are available without restriction CPIN SIM PIN M1 expects the PIN for the SIM card CPIN SIM PUK M1 expects the PUK for the SIM card including a PIN CPIN PH SIM PIN M1 expects a device code CPIN PH SIM M1 expects the device PUK including a PIN that is stored PUK as a device code 39 Technical reference section
54. lt used2 gt lt total2 gt CMS ERROR em CPMS CPMS lt meml gt lt used1 gt lt total1 gt lt mem2 gt lt used2 gt lt total2 gt CPMS CPMS list of supported lt mem1 gt s list of supported lt mem2 gt s Values implemented lt mem1 gt String type memory from which messages are read and deleted SM SIM message storage lt mem2 gt String type memory to which commands are written and sent SM SIM message storage lt totall gt Integer type total number of message locations in lt mem1 gt lt total2 gt Integer type total number of message locations in lt mem2 gt lt used1 gt Integer type number of messages currently in lt mem1 gt lt used2 gt Integer type number of messages currently in lt mem2 gt 56 Technical reference section AT CMGF Message format This command allows you to define the input and output format of the short message Parameter command syntax Command Possible response s NN NEN CMGF CM GF lt mode gt CMGF CM GF list of supported lt mode gt s Values implemented lt mode gt 0 PDU mode AT CSCA Service center address This command allows you to set the SMSC address via which outgoing short messag es are sent Parameter command syntax Command Possible response s a DM CSCA CSCA lt sca gt lt tosca gt lt sca gt GSM 04 11 RP SC address Address value field in string format lt tosca gt GSM 04 11 RP SC a
55. ly sets the mode to match the baud rate set for the PC Factory configuration ATB 7 2400 Asynchronous V 22bis ATB11 4800 Asynchronous V 32 ATB13 9600 Asynchronous V 32 ATB25 2400 Asynchronous V110 ISDN ATB27 4800 Asynchronous V110 ISDN ATB29 9600 Asynchronous V110 ISDN ATB70 9600 Asynchronous Fax Group 3 Enter ATB13 GSM module Permanently switches the mode to 9600 bit s with the result that all radio connections are permanently set to a transfer rate of 9600 bit s Enter ATB99 GSM module Automatically changes to the rate of the COM interface 21 Technical reference section ATD Dial a telephone number In order to dial a telephone number enter the ATD command followed by the number Enter ATD 0199341 GSM module Dials the telephone number 0199341 and retums CONNECT 2400 As soon as the module detects the carrier for the distant station it returns the CON NECT result code Data transfer can now begin Valid dial strings A dial string comprises digits from 0 to 9 the telephone number letters A to C and the special dialing characters 1 and 5 i This character must be located between the ATD command and the telephone number ATDix and causes the GSM module to switch to ISDN mode for this call This character must be located at the beginning of a dial string and serves to access the international exchange of a GSM
56. network You are in Sweden and wish to set up a connection to Munich Dial ATD 4989 lt telephone number gt A dial string must contain no more than 30 characters A longer string will not be dialed A command line including the dial string must not exceed 39 characters Although longer command lines are displayed they are rejected in their entirety ATD0045890235168338 This dial string comprises 16 characters The command line on the screen contains 19 characters 22 Technical reference section ATDL Redial last telephone number used This command allows you to redial the last telephone number that you dialed regard less of whether the last dialing attempt was successful Enter ATD123456789 GSM module dials 123456789 GSM module BUSY The number is busy Enter ATDL GSM module Redials 123456789 AT Dn Automatic dialing with DTR The AT Dn command allows you to activate and deactivate automatic dialing of the telephone number stored in telephone number memory 0 The number is dialed if the computer sets the DTR control line connected to the COM interface to ON AT Dn n 0 1 Option Result AT DO Deactivates automatic DTR dialing AT D1 Activates automatic DTR dialing if DTR switches from OFF to ON dials the telephone number x that was stored in telephone number memory 0 by means of the AT amp Z0 x command Enter AT amp Z0 123456789 Stores the telephone no 123456789
57. oading the factory configuration and displaying a configuration The AT amp F and AT amp V commands allow you to load and display the factory configuration Enter AT amp FO M1 returns OK Enter AT amp V MI Loads the factory configuration and transfers it to the PC The settings are displayed on the screen ATVn Result codes The GSM module acknowledges all commands Enter AT amp FO M1 returns OK The ATVn command allows you to determine whether result codes will appear as al phanumeric text or a numerical code ATVn n 0 1 Option Result ATVO Selects the short result code format digits Useful if the GSM module is to be controlled from the computer using a communication program ATV1 Selects the long result code format Factory configuration 17 Technical reference section Overview of the short and long result code formats Short Long code Meaning code 0 OK Command executed no error 1 CONNECT Connection set up 2 RING Ringing signal detected 3 NO CARRIER Connection not set up or disconnected 4 ERROR Incorrect command or command too long The AT CMEE 2 command allows you to display extended error messages to GSM 0707 6 NO DIALTONE Connection cannot be set up 7 BUSY Distant station busy 10 CONNECT 2400 Connection at 2400 bit s 30 CONNECT 4800 Connection at 4800 bit s 32 CONNECT 9600 Connection at 9600 bit s P
58. ommand line are ignored AT amp T1 Initiate local digital test loop This test loop checks your GSM module and the mobile telephone If this test is not successfully completed the problem is located in your GSM module or in a cable con nection Start the test loop and enter a random test message via the keyboard The GSM module does not send this message to the distant station but instead receives it itself It retums the message to the computer where it is displayed on the screen If the GSM module correctly echoes the test message to the computer the module has successfully completed the local digital test Please note You can initiate this test only if no connection is set up otherwise the GSM module retums ERROR Situation Command mode no connection Example Enter AT amp T1 GSM module OK Enter ABC GSM module ABC You can enter additional test data and check the echo Terminate this test by entering the following Enter Escape command GSM module OK Acknowledges escape command Enter AT amp TO Terminate test GSM module OK Test terminated 68 Technical reference section ATIn Display GSM module I data The ATIn command provides you with information that you should keep ready in case you need to consult your dealer or the manufacturer ATIn n 0 1 2 8 9 ATIO Displays GSM module product code The GSM module transmits the product code as a 3 digit ASCII string with the format 24x followed
59. per operator ator 1 Registered The GSM module has successfully registered in the network and all services are available 2 Not registered The M1 is not registered but is searching for a but ME is new network operator searching for a See AT COPS commands relating to network new operator operator selection 3 Registration The selected network cannot be accessed at denied this time Unknown The current status in relation to the network cannot be determined at this time 35 Technical reference section Enter AT CREG GSM module CREG 0 0 gt not registered OK AT COPS Operator selection These commands allow you to read out the current network operator display a list of available network operators or select a operator directly Various command extensions are available AT COPS Command Result AT COPS Displays current network operator AT COPS Displays a list of network operators that are currently available via radio AT COPS lt mode n gt Allows you to instruct the GSM module to use a spe lt format f gt cific network operator lt network operator gt AT4COPS Display current network operator This command displays the network operator that is currently selected It also provides you with information on whether the radio modem has selected this network operator automatically or whether you manually instructed it to select this operator A result code with the
60. rence section AT CGMI Request manufacturer ID This command provides you with the name of the module manufacturer AT4CGMI Option Result AT4CGMI Displays manufacturer Enter AT CGMI GSM module CGMI SIEMENS oK AT CGMM Request model ID This command provides you with the name of the module AT CGMM Option Result AT CGMM Displays module name Enter AT CGMM Response CGMM M1 OK AT CGMR Request revision ID This command provides you with the version of the GSM module and the software cre ation date AT CGMR Option Result AT CGMR Displays the version number and creation date Enter AT CGMR GSM module CGMR Ver 02 001 10 08 95 OK 31 Technical reference section AT CGSN Request product serial number ID This command provides you with the serial number of the GSM module The serial number has the GSM format AT CGSN Option Result AT CGSN Displays the serial number In GSM each mobile telephone is assigned a unique number known as the IM El Intemational Mobile Equipment Identity Enter AT CGSN GSM module IMEI 445199518750 OK AT CHUP Hangup call This command allows you to terminate all calls AT CHUP Option Result AT CHUP Terminate all calls Enter AT CHUP GSM module OK AT CEER Extended error report This command allows you to query the r
61. s you can use this com mand to configure your GSM module accordingly You must do this in networks that support only TS61 if you are to be able to send or receive faxes at all AT CXXMOC Command Result AT CXXMOC Displays value currently set for CXXMOC AT CXXM OC lt MOC mode gt Sets the single numbering receive mode to the relevant mode AT CXXMOC Displays a list of values for MOC modes AT CXXMOC Command AT CXXMOC Result code CXXMOC lt 0 1 gt lt MOC mode gt Meaning of the mode 0 Fax calls to the radio network are set up using TS62 1 All outgoing fax calls are set up using TS61 fax voice but calls are terminated when the fax transmission is terminated You wish to set the MOC mode to TS61 Enter AT CXXMOC 1 GSM module OK 46 Technical reference section AT CPBS Select phonebook memory storage When reading or writing a phonebook entry you must tell the M1 which phonebook memory will be affected by the subsequent read write jobs The following phonebook memories are supported in the M1 Phonebook on the SIM card Last number redial memory Own telephone numbers FDN phonebook if this is also supported by the SIM card AT CPBS AT CPBS dir Selects anew phonebook AT CPBS Provides you with information on which phonebook is cur rently activated AT CPBS Displays a list of all the telephone directories supported AT
62. terpreted as commands and if a phone con nection is present are not transferred to the distant station Transparent mode In transparent mode the GSM module transfers every character sent and received via the COM interface just as it is Escape command Before attempting to dial your first call you must know how to interrupt or disconnect a call at any time This involves the following two steps Enter JJ J to switch to command mode Disconnect the call by entering ATH Situation The GSM module is operating in transparent mode i e a connection is set up to a distant station Change to command mode Do not press any key for at least one second Press the LJ key three times in rapid succession within one second Do not press another key for at least one second The GSM module switches to command mode i e it interrupts the flow of data and 19 Technical reference section returns the result code OK The connection is not yet cleared down The pause before and after the characters ensures that the GSM module will interpret this command as the escape command in transparent mode and will then switch to command mode Going on hook Disconnect the call by entering ATH see next section ATH Go on hook In command mode the ATH command causes the GSM module to disconnect an ex isting call The call is also disconnected if the distant station goes on hook or the radio connection in the GSM network is
63. to the computer which displays it on the screen You have a GSM module and have loaded the factory configuration by means of the AT amp F command Now enter the AT amp V command The following is displayed on the Screen AT amp V ACTIVE PROFILE B99 El L2 M1 Q0 V1 X4 YO DO amp Cl amp D2 amp GO amp YO S00 000 S01 000 S02 043 S03 013 S04 010 S05 008 S06 002 S07 060 S08 002 S09 006 S10 007 S12 050 S14 6AH S16 00H S18 000 S21 30H S22 46H S23 1CH S25 005 S26 001 S27 00H STORED PROFILE 0 B99 El L2 M1 Q0 V1 X4 YO amp Cl amp D2 amp GO S00 000 S14 6AH S18 000 S21 30H S22 46H S23 1CH S25 005 S26 001 S27 00H STORED PROFILE 1 B99 El L2 M1 Q0 V1 X4 YO amp Cl amp D2 amp GO S00 000 S14 6AH S18 000 S21 30H S22 46H S23 1CH S25 005 S26 001 S27 00H TELEPHONE NUMBERS Z0 amp Z1 amp Z2 amp Z3 OK 25 Technical reference section Configuring the module using AT commands This section describes the standard AT commands that allow you to configure your GSM module These commands are grouped according to subject area Screen outputs Limits of screen outputs When you receive data that is reproduced on the screen data echo the text is usually shifted upward when the edge of the screen is reached When you generate screen outputs using AT commands e g AT amp V a maximum of 30 lines is displayed for each command If for example you enter the AT amp V command several times on the same line AT amp V amp V amp V a
64. ule You have connected your GSM module to your PC You can now connect to your GSM module To do so start up a communication program on your PC Set the following transmission parameters characteristics COM interface 1 4 depending on which one the M1 is connected to Rate 2400 19200 baud Data bits 8 Parity None Stop bits 1 Duplex Full The GSM module supports autobauding on the V 24 interface with transfer rates from 2400 to 19200 baud and the data format 8NL Command syntax of the AT standard Command lines must always begin with AT Multiple commands can be combined on one command line To improve legibility you can enter spaces between the individual commands The GSM module ignores these spaces Commands that are specified in this manual with 0 in the last position can also be entered without this 0 Example ATQ has the same effect as ATQO A command line must end with a CR character which is entered by pressing En ter on the keyboard This fact will not be mentioned again in this manual 16 Technical reference section The CR character can be followed by a lt LF gt character but this character will be ignored by the GSM module Sample command lines ATH ATS7 Q0E1 ATD0123456789 When making corrections use the Backspace key or Ctrl H to delete the character to the left of the cursor The command line is not executed until the lt CR gt character is received L
65. well as terminating result codes Permissible values are from 0 to 127 ASCII value of the lt LF gt character The factory setting for all countries is 10 For long alphanumeric result codes lt LF gt is output after the CR character Permissible values are from 0 to 127 ASCII value of the Backspace character The factory setting is 8 Permissi ble values are from 33 to 127 Wait time for connection after dialing If no connection is detected within the specified period of time the GSM module goes on hook Permissible values are from 0 to 60 Wait time for AT commands in 50ths of a second The period of time speci fied here must elapse before and after the escape sequence is entered so that the GSM module can recognize it as a command The factory setting for all countries is 50 2 10 s Do not set too short of a wait time Permis sible values are from 0 to 255 As a rule this value should be no less than 20 65 Technical reference section S14 Command echo result codes 1 Command echo ATEn 0 Echo off 1 Echo on 2 Result codes ATQn 0 Display result codes 1 Suppress result codes Short format mode ATVn 0 Result codes as digits 1 Result codes as text Reserved ul Reserved N Reserved S21 DTR and DCD options mems CI Automatic dialing when 0 Automatic DTR dialing on DTR OFF gt ON At Dn 1 Automatic DTR dialing off m N Ignore DTR GSM module c

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