Quectel EC20 AT Commands Manual V1.3
Quectel_EC20_AT_Commands_Manual_V1.3
Quectel_EC20_AT_Commands_Manual_V1.3
Quectel_EC20_AT_Commands_Manual_V1.3(15210567816%E5%90%95)
Quectel_EC20_AT_Commands_Manual_V1.3
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EC20 AT Commands Manual LTE Module Series Rev. EC20_AT_Commands_Manual_V1.3 Date: 2016-07-21 www.quectel.com LTE Module Series EC20 AT Commands Manual Our aim is to provide customers with timely and comprehensive service. For any assistance, please contact our company headquarters: Quectel Wireless Solutions Co., Ltd. Office 501, Building 13, No.99, Tianzhou Road, Shanghai, China, 200233 Tel: +86 21 5108 6236 Email: info@quectel.com Or our local office. For more information, please visit: l e t l c a e i t u n Q ide f n o C http://www.quectel.com/support/salesupport.aspx For technical support, or to report documentation errors, please visit: http://www.quectel.com/support/techsupport.aspx Or email to: Support@quectel.com GENERAL NOTES QUECTEL OFFERS THE INFORMATION AS A SERVICE TO ITS CUSTOMERS. THE INFORMATION PROVIDED IS BASED UPON CUSTOMERS‟ REQUIREMENTS. QUECTEL MAKES EVERY EFFORT TO ENSURE THE QUALITY OF THE INFORMATION IT MAKES AVAILABLE. QUECTEL DOES NOT MAKE ANY WARRANTY AS TO THE INFORMATION CONTAINED HEREIN, AND DOES NOT ACCEPT ANY LIABILITY FOR ANY INJURY, LOSS OR DAMAGE OF ANY KIND INCURRED BY USE OF OR RELIANCE UPON THE INFORMATION. THE INFORMATION SUPPLIED HEREIN IS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE. COPYRIGHT THE INFORMATION CONTAINED HERE IS PROPRIETARY TECHNICAL INFORMATION OF QUECTEL CO., LTD. TRANSMITTING, REPRODUCTION, DISSEMINATION AND EDITING OF THIS DOCUMENT AS WELL AS UTILIZATION OF THE CONTENT ARE FORBIDDEN WITHOUT PERMISSION. OFFENDERS WILL BE HELD LIABLE FOR PAYMENT OF DAMAGES. ALL RIGHTS ARE RESERVED IN THE EVENT OF A PATENT GRANT OR REGISTRATION OF A UTILITY MODEL OR DESIGN. Copyright © Quectel Wireless Solutions Co., Ltd. 2016. All rights reserved. EC20_AT_Commands_Manual Confidential / Released 1 / 230 LTE Module Series EC20 AT Commands Manual About the Document History l e t l c a e i t u n Q ide f n o C Revision Date Author Description 1.0 2015-02-13 Francis TANG Initial 1.1 1.2 1.3 2015-07-14 2015-11-02 2016-07-21 Rex ZHANG/ Francis TANG 1. 2. 3. Added summary of UART Added AT commands: AT+IPR/AT+QCCID Modified the description of AT commands: AT+QCFG="nwscanmode"/AT+QCFG="nwscanse q"/AT+QCFG="band"/AT+CSQ/AT+QURCCFG Rex ZHANG/ Francis TANG 1. Added AT commands: AT+IFC/+++/AT+QNWINFO/AT+QGDCNT/AT+QA UGDCNT/AT+QTONEDET/AT+QPINC/AT+QSIMD ET/AT+QSIMSTAT/AT+QCSMP/AT+QSMSR/AT+ QCFG="TDSCSQ"/AT+QSMSL/AT+QCFG="PDP/ DuplicateChk"/AT+QCFG="apready" 2. Updated the Table of AT command settings with AT&F/AT&W/URC 3. Updated the description for AT command in CDMA Network Francis TANG 1. Updated the parameter description for AT+COPS/AT+QDAI/AT+QCFG=”nwscanseq”/AT+ QCFG="band" 2. Added AT commands: AT+QCFG="airplanecontrol"/AT+QCFG="risignalty pe"/AT+QCFG=“urc/ri/ring”/AT+QCFG="urc/ri/smsi ncoming"/AT+QCFG="urc/ri/other"/AT+QCFG=”us bid”/AT+QCFG=”ehrpd”/AT+QCFG=”tone/incoming ”/AT+QRIR/AT+QLTS/AT+VTD/AT+QMIC/AT+QRX GAIN EC20_AT_Commands_Manual Confidential / Released 2 / 230 LTE Module Series EC20 AT Commands Manual Contents About the Document ................................................................................................................................... 2 Contents ....................................................................................................................................................... 3 Table Index ................................................................................................................................................... 8 1 Introduction .......................................................................................................................................... 9 1.1. Scope of the Document ............................................................................................................. 9 1.2. AT Command Syntax ................................................................................................................. 9 1.3. Supported Character Sets ....................................................................................................... 10 1.4. AT Command Interface ............................................................................................................ 10 1.5. Unsolicited Result Code .......................................................................................................... 10 1.6. Turn off Procedure ................................................................................................................... 11 2 General Commands ........................................................................................................................... 12 2.1. ATI Display Product Identification Information ...................................................................... 12 2.2. AT+GMI Request Manufacturer Identification ...................................................................... 13 2.3. AT+GMM Request TA Model Identification ........................................................................... 13 2.4. AT+GMR Request TA Revision Identification of Software Release ..................................... 14 2.5. AT+CGMI Request Manufacturer Identification .................................................................... 14 2.6. AT+CGMM Request TA Model Identification ........................................................................ 15 2.7. AT+CGMR Request TA Revision Identification of Software Release ................................... 15 2.8. AT+GSN Request International Mobile Equipment Identity (IMEI) ...................................... 16 2.9. AT+CGSN Request Product Serial Number Identification ................................................... 17 2.10. AT&F Set all Current Parameters to Manufacturer Defaults ................................................ 17 2.11. AT&V Display Current Configuration .................................................................................... 18 2.12. AT&W Store Current Parameters to User Defined Profile .................................................... 19 2.13. ATZ Set all Current Parameters to User Defined Profile ...................................................... 19 2.14. ATQ Set Result Code Presentation Mode ............................................................................ 20 2.15. ATV TA Response Format .................................................................................................... 20 2.16. ATE Set Command Echo Mode ............................................................................................ 22 2.17. A/ Repeat Previous Command Line ..................................................................................... 22 2.18. ATS3 Set Command Line Termination Character................................................................. 23 2.19. ATS4 Set Response Formatting Character .......................................................................... 24 2.20. ATS5 Set Command Line Editing Character ........................................................................ 24 2.21. ATX Set CONNECT Result Code Format and Monitor Call Progress ................................. 25 2.22. AT+CFUN Set Phone Functionality ...................................................................................... 26 2.23. AT+CMEE Error Message Format ........................................................................................ 27 2.24. AT+CSCS Select TE Character Set...................................................................................... 28 2.25. AT+QURCCFG Configure URC Indication Option ............................................................... 29 3 Serial Interface Control Commands ................................................................................................ 31 3.1. AT&C Set DCD Function Mode ............................................................................................ 31 3.2. AT&D Set DTR Function Mode ............................................................................................. 31 3.3. AT+ICF Set TE-TA Control Character Framing .................................................................... 32 l e t l c a e i t u n Q ide f n o C EC20_AT_Commands_Manual Confidential / Released 3 / 230 LTE Module Series EC20 AT Commands Manual 3.4. 3.5. 3.6. 4 AT+IFC Set TE-TA Local Data Flow Control ......................................................................... 33 AT+IPR Set TE-TA Fixed Local Rate .................................................................................... 34 AT+QRIR Restore Ring indicator to Inactive ........................................................................ 35 Status Control Commands ............................................................................................................... 36 4.1. AT+CPAS Mobile Equipment Activity Status......................................................................... 36 4.2. AT+CEER Extended Error Report ........................................................................................... 37 4.3. AT+QCFG Extended Configuration Settings ........................................................................ 38 4.3.1. AT+QCFG="gprsattach" GPRS Attach Mode Configuration....................................... 40 4.3.2. AT+QCFG="nwscanmode" Network Search Mode Configuration.............................. 40 4.3.3. AT+QCFG="nwscanseq" Network Searching Sequence Configuration..................... 41 4.3.4. AT+QCFG="roamservice" Roam Service Configuration ............................................ 42 4.3.5. AT+QCFG="servicedomain" Service Domain Configuration ...................................... 43 4.3.6. AT+QCFG="band" Band Configuration ...................................................................... 44 4.3.7. AT+QCFG="hsdpacat" HSDPA Category Configuration............................................. 45 AT+QCFG="hsupacat" HSUPA Category Configuration ............................................ 46 4.3.8. 4.3.9. AT+QCFG="rrc" RRC Release Version Configuration ............................................... 47 4.3.10. AT+QCFG="sgsn" UE SGSN Release Version Configuration ................................... 48 4.3.11. AT+QCFG="msc" UE MSC Release Version Configuration ....................................... 49 4.3.12. AT+QCFG="PDP/DuplicateChk" Establish Multi PDNs with the Same APN ............. 49 4.3.13. AT+QCFG="TDSCSQ" Set TDSCDMA RSSI Range ................................................. 50 4.3.14. AT+QCFG="airplanecontrol" Enable/Disable Airplane Mode Detection ..................... 51 4.3.15. AT+QCFG="apready" AP Ready Detection Configuration ......................................... 52 4.3.16. AT+QCFG="risignaltype" Ring indicator Signal Outputting Carrier ............................ 54 4.3.17. AT+QCFG="urc/ri/ring" Ring indicator Behaviors of RING ......................................... 55 4.3.18. AT+QCFG="urc/ri/smsincoming" Ring indicator Behaviors of Incoming SMS ........... 56 4.3.19. AT+QCFG="urc/ri/other" Ring indicator Behaviors of Other URCs ............................ 57 4.3.20. AT+QCFG="usbid" Set USB Vendor Id and Product Id .............................................. 58 4.3.21. AT+QCFG="ehrpd" Configure the EHRPD Mode ....................................................... 58 4.3.22. AT+QCFG="tone/incoming" Enable/Disable Ringing Tone ........................................ 59 l e t l c a e i t u n Q ide f n o C 5 SIM Related Commands .................................................................................................................... 60 5.1. AT+CIMI Request International Mobile Subscriber Identity (IMSI) ....................................... 60 5.2. AT+CLCK Facility Lock ......................................................................................................... 61 5.3. AT+CPIN Enter PIN .............................................................................................................. 63 5.4. AT+CPWD Change Password .............................................................................................. 65 5.5. AT+CSIM Generic SIM Access ............................................................................................. 66 5.6. AT+CRSM Restricted SIM Access ........................................................................................ 67 5.7. AT+QCCID Show ICCID ....................................................................................................... 68 5.8. AT+QPINC Display PIN Remainder Counter........................................................................ 69 5.9. AT+QSIMDET SIM Card Detection....................................................................................... 69 5.10. AT+QSIMSTAT SIM Inserted Status Report ......................................................................... 71 6 Network Service Commands ............................................................................................................ 73 6.1. AT+COPS Operator Selection .............................................................................................. 73 6.2. AT+CREG Network Registration........................................................................................... 75 EC20_AT_Commands_Manual Confidential / Released 4 / 230 LTE Module Series EC20 AT Commands Manual 6.3. 6.4. 6.5. 6.6. 6.7. 6.8. 6.9. 7 AT+CSQ Signal Quality Report............................................................................................. 77 AT+CPOL Preferred Operator List ........................................................................................ 79 AT+COPN Read Operator Names ........................................................................................ 80 AT+CTZU Automatic Time Zone Update .............................................................................. 81 AT+CTZR Time Zone Reporting ........................................................................................... 82 AT+QLTS Obtain the Latest Network Time Synchronization ................................................ 83 AT+QNWINFO Query Network Information .......................................................................... 84 Call Related Commands .................................................................................................................... 87 7.1. ATA Answer an Incoming Call ............................................................................................... 87 7.2. ATD Mobile Originated Call to Dial a Number ...................................................................... 88 7.3. ATH Disconnect Existing Connection ................................................................................... 89 7.4. AT+CVHU Voice Hang Up Control........................................................................................ 90 7.5. AT+CHUP Hang Up Call ....................................................................................................... 91 7.6. +++ Switch From Data Mode to Command Mode ................................................................ 91 7.7. ATO Switch From Command Mode to Data Mode ............................................................... 92 7.8. ATS0 Set Number of Rings before Automatically Answering Call ........................................ 93 7.9. ATS6 Set Pause Before Blind Dialing ................................................................................... 94 7.10. ATS7 Set Number of Seconds to Wait for Connection Completion...................................... 94 7.11. ATS8 Set the Number of Seconds to Wait for Comma Dial Modifier ................................... 95 7.12. ATS10 Set Disconnect Delay after Indicating the Absence of Data Carrier ......................... 95 7.13. AT+CBST Select Bearer Service Type ................................................................................. 96 7.14. AT+CSTA Select Type of Address ........................................................................................ 98 7.15. AT+CLCC List Current Calls of ME....................................................................................... 99 7.16. AT+CR Service Reporting Control ...................................................................................... 101 7.17. AT+CRC Set Cellular Result Codes for Incoming Call Indication ...................................... 101 7.18. AT+CRLP Select Radio Link Protocol Parameter .............................................................. 103 7.19. AT+QECCNUM Configure Emergency Call Numbers ........................................................ 104 l e t l c a e i t u n Q ide f n o C 8 Phonebook Commands ................................................................................................................... 107 8.1. AT+CNUM Subscriber Number........................................................................................... 107 8.2. AT+CPBF Find Phonebook Entries .................................................................................... 108 8.3. AT+CPBR Read Phonebook Entries .................................................................................. 109 8.4. AT+CPBS Select Phonebook Memory Storage.................................................................. 110 8.5. AT+CPBW Write Phonebook Entry......................................................................................111 9 Short Message Service Commands ............................................................................................... 113 9.1. AT+CSMS Select Message Service (Not Effective in CDMA Network) ............................. 113 9.2. AT+CMGF Message Format ............................................................................................... 114 9.3. AT+CSCA Service Center Address (Not Supported in CDMA Network) ............................ 115 9.4. AT+CPMS Preferred Message Storage .............................................................................. 116 9.5. AT+CMGD Delete Message ............................................................................................... 118 9.6. AT+CMGL List Messages ................................................................................................... 119 9.7. AT+CMGR Read Message ................................................................................................. 122 9.8. AT+CMGS Send Message .................................................................................................. 127 9.9. AT+CMMS More Messages to Send (Not Effective in CDMA Network) ............................ 128 EC20_AT_Commands_Manual Confidential / Released 5 / 230 LTE Module Series EC20 AT Commands Manual 9.10. 9.11. 9.12. 9.13. 9.14. 9.15. 9.16. 9.17. 9.18. 9.19. AT+CMGW Write Message to Memory............................................................................... 129 AT+CMSS Send Message From Storage ........................................................................... 131 AT+CNMA New Message Acknowledgement to UE/TE (Not Effective in CDMA Network)133 AT+CNMI SMS Event Reporting Configuration .................................................................. 134 AT+CSCB Select Cell Broadcast Message Types (Not Effective in CDMA Network) ........ 137 AT+CSDH Show SMS Text Mode Parameters (Not Effective in CDMA Network) ............. 138 AT+CSMP Set SMS Text Mode Parameters (Not Effective in CDMA Network) ................. 139 AT+QCSMP Set CDMA SMS Text Mode Parameters ........................................................ 140 AT+QSMSR Read Message ............................................................................................... 141 AT+QSMSL List Messages ................................................................................................. 145 10 Packet Domain Commands ............................................................................................................ 149 10.1. AT+CGATT Attachment or Detachment of PS .................................................................... 149 10.2. AT+CGDCONT Define PDP Context .................................................................................. 150 10.3. AT+CGQREQ Quality of Service Profile (Requested) ........................................................ 151 10.4. AT+CGQMIN Quality of Service Profile (Minimum Acceptable) ......................................... 154 10.5. AT+CGEQREQ 3G Quality of Service Profile (Requested) ............................................... 157 10.6. AT+CGEQMIN 3G Quality of Service Profile (Minimum Acceptable) ................................. 161 10.7. AT+CGACT Activate or Deactivate PDP Context ............................................................... 165 10.8. AT+CGDATA Enter Data State ............................................................................................ 166 10.9. AT+CGPADDR Show PDP Address ................................................................................... 167 10.10. AT+CGCLASS GPRS Mobile Station Class ....................................................................... 168 10.11. AT+CGREG Network Registration Status........................................................................... 169 10.12. AT+CGEREP Packet Domain Event Reporting .................................................................. 171 10.13. AT+CGSMS Select Service for MO SMS Messages.......................................................... 173 10.14. AT+CEREG EPS Network Registration Status ................................................................... 174 10.15. AT+QGDCNT GPRS Data Counter .................................................................................... 175 10.16. AT+QAUGDCNT Auto Save GPRS Data Counter ............................................................. 177 l e t l c a e i t u n Q ide f n o C 11 Supplementary Service Commands .............................................................................................. 179 11.1. AT+CCFC Call Forwarding Number and Conditions Control ............................................. 179 11.2. AT+CCWA Call Waiting Control .......................................................................................... 181 11.3. AT+CHLD Call Related Supplementary Services ............................................................... 183 11.4. AT+CLIP Calling Line Identification Presentation ............................................................... 185 11.5. AT+CLIR Calling Line Identification Restriction .................................................................. 186 11.6. AT+COLP Connected Line Identification Presentation....................................................... 187 11.7. AT+CSSN Supplementary Service Notifications ................................................................ 189 11.8. AT+CUSD Unstructured Supplementary Service Data ...................................................... 190 12 Audio Commands ............................................................................................................................ 192 12.1. AT+CLVL Loud Speaker Volume Level ............................................................................... 192 12.2. AT+CMUT Mute Control...................................................................................................... 192 12.3. AT+VTS DTMF and Tone Generation ................................................................................. 193 12.4. AT+VTD Tone Duration ....................................................................................................... 194 12.5. AT+QAUDMOD Set Audio Mode ........................................................................................ 195 12.6. AT+QDAI Digital Audio Interface Configuration .................................................................. 196 EC20_AT_Commands_Manual Confidential / Released 6 / 230 LTE Module Series EC20 AT Commands Manual 12.7. 12.8. 12.9. 12.10. 12.11. AT+QSIDET Set the Side Tone Gain in Current Mode ....................................................... 198 AT+QAUDLOOP Enable Audio Loop Test .......................................................................... 198 AT+QMIC Set up-link (MIC) Gains ........................................................................................ 199 AT+QTONEDET Enable/Disable DTMF Detection ........................................................... 200 AT+QRXGAIN Set Down-link (RX) Gains........................................................................... 201 13 Hardware Related Commands ........................................................................................................ 203 13.1. AT+QPOWD Power Off....................................................................................................... 203 13.2. AT+CCLK Clock .................................................................................................................. 203 13.3. AT+CBC Battery Charge ..................................................................................................... 204 13.4. AT+QADC Read ADC ......................................................................................................... 205 13.5. AT+QSCLK Configure Whether or not to Enter into Sleep Mode....................................... 206 l e t l c a e i t u n Q ide f n o C 14 Appendix ........................................................................................................................................... 207 14.1. Reference .............................................................................................................................. 207 14.2. Factory Default Settings Restorable with AT&F .................................................................... 208 14.3. AT Command Settings Storable with AT&W .......................................................................... 210 14.4. AT Command Settings Storable with ATZ ............................................................................. 211 14.5. Summary of CME ERROR Codes......................................................................................... 212 14.6. Summary of CMS ERROR Codes......................................................................................... 213 14.7. Summary of URC................................................................................................................... 215 14.8. SMS Character Sets Conversions ......................................................................................... 217 14.9. Release Cause Text List of AT+CEER .................................................................................. 224 EC20_AT_Commands_Manual Confidential / Released 7 / 230 LTE Module Series EC20 AT Commands Manual Table Index TABLE 1: TYPES OF AT COMMANDS AND RESPONSES ..................................................................... 10 TABLE 2: AT&V RESPONSE ..................................................................................................................... 18 TABLE 3: ATV0&ATV1 RESULT CODES NUMERIC EQUIVALENTS AND BRIEF DESCRIPTION ........ 21 TABLE 4: PARAMETERS CONFIGURATIONS SUPPORTED BY AT+CBST .......................................... 97 TABLE 5: DELAY CLASS ......................................................................................................................... 154 TABLE 6: RELATED DOCUMENTS ........................................................................................................ 207 TABLE 7: TERMS AND ABBREVIATIONS .............................................................................................. 207 TABLE 8: FACTORY DEFAULT SETTINGS RESTORABLE WITH AT&F .............................................. 208 TABLE 9: AT COMMAND SETTINGS STORABLE WITH AT&W ............................................................ 210 TABLE 10: AT COMMAND SETTINGS STORABLE WITH ATZ.............................................................. 211 TABLE 11: DIFFERENT CODING SCHEMES OF +CME ERROR:........................................... 212 TABLE 12: DIFFERENT CODING SCHEMES OF +CMS ERROR: ........................................... 214 TABLE 13: SUMMARY OF URC .............................................................................................................. 215 TABLE 14: THE WAY OF SMS TEXT INPUT OR OUTPUT .................................................................... 218 TABLE 15: THE INPUT CONVERSIONS TABLE (DCS=GSM 7 BIT AND AT+CSCS=“GSM”) .............. 218 TABLE 16: THE OUTPUT CONVERSIONS TABLE (DCS=GSM 7 BIT AND AT+CSCS=“GSM”) .......... 219 TABLE 17: GSM EXTENDED CHARACTERS ........................................................................................ 220 TABLE 18: THE INPUT CONVERSIONS TABLE (DCS=GSM 7 BIT AND AT+CSCS=“IRA”) ................ 220 TABLE 19: IRA EXTENDED CHARACTERS........................................................................................... 221 TABLE 20: THE OUTPUT CONVERSIONS TABLE (DCS=GSM 7 BIT AND AT+CSCS=“IRA”) ............ 222 TABLE 21: GSM EXTENDED CHARACTERS ........................................................................................ 223 TABLE 22: RELEASE CAUSE TEXT LIST OF AT+CEER....................................................................... 224 l e t l c a e i t u n Q ide f n o C EC20_AT_Commands_Manual Confidential / Released 8 / 230 LTE Module Series EC20 AT Commands Manual 1 Introduction 1.1. Scope of the Document l e t l c a e i t u n Q ide f n o C This document presents the AT Commands Set for Quectel cellular engine EC20. 1.2. AT Command Syntax The “AT” or “at” prefix must be set at the beginning of each command line. To terminate a command line enter . Commands are usually followed by a response that includes “ ”. Throughout this document, only the responses are presented, “ ” are omitted intentionally. The AT Commands Set implemented by EC20 is a combination of 3GPP TS 27.007, 3GPP TS 27.005 and ITU-T recommendation V.25ter and the AT Commands developed by Quectel. All these AT commands can be split into three categories syntactically: “basic”, “S parameter”, and “extended”. They are listed as follows: Basic syntax These AT commands have the format of “AT ”, or “AT& ”, where “ ” is the command, and “ ” is/are the argument(s) for that command. An example of this is “ATE ”, which tells the DCE whether received characters should be echoed back to the DTE according to the value of “ ”. “ ” is optional and a default will be used if it is missing. S parameter syntax These AT commands have the format of “ATS = ”, where “ ” is the index of the S register to set, and “ ” is the value to assign to it. Extended syntax These commands can be operated in several modes, as following table: EC20_AT_Commands_Manual Confidential / Released 9 / 230 LTE Module Series EC20 AT Commands Manual Table 1: Types of AT Commands and Responses Test Command AT+ =? This command returns the list of parameters and value ranges set by the corresponding write command or internal processes. Read Command AT+ ? This command returns the currently set value of the parameter or parameters. Write Command AT+ =<…> This command sets the user-definable parameter values. Execution Command AT+ This command reads non-variable parameters affected by internal processes in the UE. l e t l c a e i t u n Q ide f n o C 1.3. Supported Character Sets The EC20 AT command interface defaults to the GSM character set. The EC20 supports the following character sets: GSM UCS2 IRA The character set can be configured and interrogated by using the “AT+CSCS” command (3GPP TS 27.007) and it is defined in 3GPP TS 27.005. The character set affects transmission and reception of SMS and SMS Cell Broadcast Messages, the entry and display of phone book entries text field. 1.4. AT Command Interface The EC20 AT command interface includes two USB ports (USB MODEM port and USB AT port) and one main UART port. The main UART port and two USB ports support AT command and data transfer. 1.5. Unsolicited Result Code As an Unsolicited Result Code and a report message, URC is not issued as part of the response related to an executed AT command. URC is issued by the EC20 without being requested by the TE and it is issued automatically when a certain event occurs. Typical events leading to URCs are incoming calls (“RING”), received short messages, high/low voltage alarm, high/low temperature alarm etc. EC20_AT_Commands_Manual Confidential / Released 10 / 230 LTE Module Series EC20 AT Commands Manual 1.6. Turn off Procedure It is recommended to execute AT+QPOWD command to turn off the module, as it is the safest and best way. This procedure is realized by letting the module log off from the network and allowing the software to enter into a secure and safe data state before disconnecting the power supply. After sending AT+QPOWD, do not enter any other AT commands. The module outputs message “POWERED DOWN” and sets the STATE pin as low to enter into the shutdown state. In order to avoid data loss, it is suggested to wait for 1s to switch off the VBAT after the STATUS pin is set as low and the URC “POWERED DOWN” is outputted. If “POWERED DOWN” has not been received after 65s, you should force to switch off the VBAT. l e t l c a e i t u n Q ide f n o C EC20_AT_Commands_Manual Confidential / Released 11 / 230 LTE Module Series EC20 AT Commands Manual 2 General Commands 2.1. ATI Display Product Identification Information The ATI command delivers a product information text. ATI l e t l c a e i t u n Q ide f n o C Display Product Identification Information Execution Command ATI Response TA issues product information text. Quectel EC20 Revision: OK Maximum Response Time Reference V.25ter Parameter Example 300ms Revision of software release ATI Quectel EC20 Revision: EC20EQAR01A01E2G OK EC20_AT_Commands_Manual Confidential / Released 12 / 230 LTE Module Series EC20 AT Commands Manual 2.2. AT+GMI Request Manufacturer Identification AT+GMI returns a manufacturer identification text. Command is identical with AT+CGMI. AT+GMI Request Manufacturer Identification Test Command AT+GMI=? Response OK Execution Command AT+GMI Response TA reports one or more lines of information text which permit the user to identify the manufacturer. Quectel l e t l c a e i t u n Q ide f n o C OK Maximum Response Time Reference V.25ter 2.3. AT+GMM 300ms Request TA Model Identification AT+GMM returns a product model identification text. Command is identical with AT+CGMM. AT+GMM Request TA Model Identification Test Command AT+GMM=? Execution Command AT+GMM Response OK Response TA returns a product model identification text. EC20 OK Maximum Response Time Reference V.25ter EC20_AT_Commands_Manual 300ms Confidential / Released 13 / 230 LTE Module Series EC20 AT Commands Manual 2.4. AT+GMR Request TA Revision Identification of Software Release AT+GMR delivers a product firmware version identification. Command is identical with AT+CGMR. AT+GMR Request TA Revision Identification of Software Release Test Command AT+GMR=? Response OK Execution Command AT+GMR Response TA reports one or more lines of information text which permit the user to identify the revision of software release. l e t l c a e i t u n Q ide f n o C OK Maximum Response Time Reference V.25ter Parameter 300ms Revision of software release Example AT+GMR EC20EQAR01A01E2G OK 2.5. AT+CGMI Request Manufacturer Identification AT+CGMI returns a manufacturer identification text. Command is identical with AT+GMI. AT+CGMI Request Manufacturer Identification Test Command AT+CGMI=? Response OK Execution Command AT+CGMI Response TA returns manufacturer identification text. Quectel EC20_AT_Commands_Manual Confidential / Released 14 / 230 LTE Module Series EC20 AT Commands Manual OK Maximum Response Time 300ms Reference 3GPP TS 27.007 2.6. AT+CGMM Request TA Model Identification l e t l c a e i t u n Q ide f n o C AT+CGMM returns a product model identification text. Command is identical with AT+GMM. AT+CGMM Test Command AT+CGMM=? Request TA Model Identification Response OK Execution Command AT+CGMM Response TA returns product model identification text. EC20 OK Maximum Response Time 300ms Reference 3GPP TS 27.007 2.7. AT+CGMR Request TA Revision Identification of Software Release AT+CGMR delivers a product firmware version identification. Command is identical with AT+GMR. AT+CGMR Request TA Revision Identification of Software Release Test Command AT+CGMR=? Execution Command AT+CGMR Response OK Response TA returns identification text of product software version. OK Maximum Response Time 300ms Reference 3GPP TS 27.007 EC20_AT_Commands_Manual Confidential / Released 15 / 230 LTE Module Series EC20 AT Commands Manual Parameter Identification text of product software version 2.8. AT+GSN Request International Mobile Equipment Identity (IMEI) AT+GSN returns the International Mobile Equipment Identity (IMEI). Command is identical with AT+CGSN. AT+GSN l e t l c a e i t u n Q ide f n o C Request International Mobile Equipment Identity (IMEI) Test Command AT+GSN=? Response OK Execution Command AT+GSN Response TA reports the IMEI (International Mobile Equipment Identity) number in information text which permit the user to identify the individual ME device. OK Maximum Response Time Reference V.25ter Parameter NOTE 300ms IMEI of the telephone The serial number (IMEI) varies with the individual ME device. EC20_AT_Commands_Manual Confidential / Released 16 / 230 LTE Module Series EC20 AT Commands Manual 2.9. AT+CGSN Request Product Serial Number Identification AT+CGSN returns International Mobile Equipment Identity (IMEI). Command is identical with AT+GSN. AT+CGSN Request Product Serial Number Identification Test Command AT+CGSN=? Response OK Execution Command AT+CGSN Response l e t l c a e i t u n Q ide f n o C OK Maximum Response Time 300ms Reference 3GPP TS 27.007 Parameter IMEI of the telephone NOTE The serial number (IMEI) varies with the individual ME device. 2.10. AT&F Set all Current Parameters to Manufacturer Defaults AT&F resets AT command settings to their factory default values. AT&F Set all Current Parameters to Manufacturer Defaults Execution Command AT&F[ ] Response TA sets all current parameters to the manufacturer defined profile. See Table 8: Factory Default Settings Restorable with AT&F. OK Maximum Response Time 300ms Reference V.25ter EC20_AT_Commands_Manual Confidential / Released 17 / 230 LTE Module Series EC20 AT Commands Manual Parameter 0 Set all TA parameters to manufacturer defaults 2.11. AT&V Display Current Configuration AT&V displays the current settings of several AT command parameters, including the single-letter AT command parameters which are not readable otherwise. AT&V l e t l c a e i t u n Q ide f n o C Display Current Configuration Execution Command AT&V Response TA returns the current parameter setting See Table 2: AT&V Response OK Maximum Response Time 300ms Reference V.25ter Table 2: AT&V Response AT&V &C: 1 &D: 1 &F: 0 &W: 0 E: 1 Q: 0 V: 1 X: 4 Z: 0 S0: 0 S3: 13 S4: 10 S5: 8 S6: 2 S7: 0 S8: 2 S10: 15 EC20_AT_Commands_Manual Confidential / Released 18 / 230 LTE Module Series EC20 AT Commands Manual OK 2.12. AT&W Store Current Parameters to User Defined Profile AT&W stores the current AT command settings to a user defined profile in non-volatile memory. AT&W Store Current Parameters to User Defined Profile Execution Command AT&W[ ] Response TA stores the current parameter settings in the user defined profile. See Table 9: AT Command Settings Storable with AT&W. OK Maximum Response Time 300ms Reference V.25ter Parameter 2.13. ATZ l e t l c a e i t u n Q ide f n o C 0 Profile number to store current parameters Set all Current Parameters to User Defined Profile ATZ restores the current AT command settings to the user defined profile in non-volatile memory, if one was stored with AT&W before. Any additional AT command on the same command line may be ignored. ATZ Set all Current Parameters to User Defined Profile Execution Command ATZ[ ] Response TA sets all current parameters to the user defined profile. See Table 10: AT Command Settings Storable with ATZ. OK Maximum Response Time 300ms Reference V.25ter EC20_AT_Commands_Manual Confidential / Released 19 / 230 LTE Module Series EC20 AT Commands Manual Parameter 0 2.14. ATQ Reset to profile number 0 Set Result Code Presentation Mode ATQ controls whether the result code is transmitted to the CE. Other information text transmitted as response is not affected. ATQ l e t l c a e i t u n Q ide f n o C Set Result Code Presentation Mode Execution Command ATQ Response This parameter setting determines whether or not the TA transmits any result code to the TE. Information text transmitted in response is not affected by this setting. If =0: OK If =1: (none) Maximum Response Time 300ms Reference V.25ter Parameter 0 1 2.15. ATV TA transmits result code Result codes are suppressed and not transmitted TA Response Format This command determines the contents of header and trailer transmitted with AT command result codes and information responses. The result codes, their numeric equivalents and brief descriptions of the use of each are listed in the following table. ATV TA Response Format Execution Command ATV EC20_AT_Commands_Manual Response This parameter setting determines the contents of the header Confidential / Released 20 / 230 LTE Module Series EC20 AT Commands Manual and trailer transmitted with result codes and information responses. When =0 0 When =1 OK Maximum Response Time 300ms Reference V.25ter Parameter l e t l c a e i t u n Q ide f n o C 0 1 Example ATV1 OK AT+CSQ +CSQ: 30,99 OK ATV0 0 AT+CSQ +CSQ: 30,99 0 Information response: Short result code format: Information response: Long result code format: //Set =1 //When =1 result code is OK //Set =0 //When =0 result code is 0 Table 3: ATV0&ATV1 Result Codes Numeric Equivalents and Brief Description ATV1 ATV0 Description OK 0 Acknowledges execution of a command CONNECT 1 A connection has been established; the DCE is moving from command state to online data state RING 2 The DCE has detected an incoming call signal from network NO CARRIER 3 The connection has been terminated or the attempt to EC20_AT_Commands_Manual Confidential / Released 21 / 230 LTE Module Series EC20 AT Commands Manual establish a connection failed ERROR 4 Command not recognized, command line maximum length exceeded, parameter value invalid, or other problem with processing the command line NO DIALTONE 6 No dial tone detected BUSY 7 Engaged (busy) signal detected 8 “@” (Wait for Quiet Answer) dial modifier was used, but remote ringing followed by five seconds of silence was not detected before expiration of the connection timer (S7) NO ANSWER 2.16. ATE l e t l c a e i t u n Q ide f n o C Set Command Echo Mode ATE controls if the module echoes characters received from TE during AT command state. ATE Set Command Echo Mode Execution Command ATE Response This setting determines whether or not the TA echoes characters received from TE during command state. OK Maximum Response Time 300ms Reference V.25ter Parameter 0 1 Echo mode off Echo mode on 2.17. A/ Repeat Previous Command Line A/ repeats previous AT command line, and “/” acts as the line terminating character. A/ Repeat Previous Command Line Execution Command A/ EC20_AT_Commands_Manual Response Repeat previous command Confidential / Released 22 / 230 LTE Module Series EC20 AT Commands Manual Reference V.25ter Example ATI Quectel EC20 Revision: EC20EQAR01A01E2G OK A/ Quectel EC20 Revision: EC20EQAR01A01E2G OK 2.18. ATS3 l e t l c a e i t u n Q ide f n o C //Repeat previous command Set Command Line Termination Character ATS3 determines the character recognized by the module to terminate an incoming command line. It is also generated for result codes and information text, along with character value set via ATS4. ATS3 Set Command Line Termination Character Read Command ATS3? Response OK Write Command ATS3= Response This parameter setting determines the character recognized by TA to terminate an incoming command line. The TA also returns this character in output. OK Maximum Response Time 300ms Reference V.25ter Parameter 0-13-127 Command line termination character (Default 13= ) EC20_AT_Commands_Manual Confidential / Released 23 / 230 LTE Module Series EC20 AT Commands Manual 2.19. ATS4 Set Response Formatting Character ATS4 determines the character generated by the module for result code and information text, along with the command line termination character set via ATS3. ATS4 Set Response Formatting Character Read Command ATS4? Response OK Write Command ATS4= l e t l c a e i t u n Q ide f n o C Response This parameter setting determines the character generated by the TA for result code and information text. OK Maximum Response Time Reference V.25ter Parameter 0-10-127 2.20. ATS5 300ms Response formatting character (Default 10= ) Set Command Line Editing Character ATS5 determines the character value used by the module to delete the immediately preceding character from the AT command line (i.e. equates to backspace key). ATS5 Set Command Line Editing Character Read Command ATS5? Response OK Write Command ATS5= Response This parameter setting determines the character recognized by TA as a request to delete the immediately preceding character from the command line. OK Maximum Response Time 300ms EC20_AT_Commands_Manual Confidential / Released 24 / 230 LTE Module Series EC20 AT Commands Manual Reference V.25ter Parameter 0-8-127 2.21. ATX Response editing character (Default 8= ) Set CONNECT Result Code Format and Monitor Call Progress l e t l c a e i t u n Q ide f n o C ATX determines whether or not the module transmits particular result codes to the TE. It also controls whether or not the module verifies the presence of a dial tone when it begins dialing, and whether or not engaged tone (busy signal) detection is enabled. ATX Set CONNECT Result Code Format and Monitor Call Progress Execution Command ATX Response This parameter setting determines whether or not the TA detected the presence of dial tone and busy signal and whether or not TA transmits particular result codes. OK Maximum Response Time 300ms Reference V.25ter Parameter 0 1 2 3 4 CONNECT result code only returned, dial tone and busy detection are both disabled CONNECT result code only returned, dial tone and busy detection are both disabled CONNECT result code returned, dial tone detection is enabled, busy detection is disabled CONNECT result code returned, dial tone detection is disabled, busy detection is enabled CONNECT result code returned, dial tone and busy detection are both enabled EC20_AT_Commands_Manual Confidential / Released 25 / 230 LTE Module Series EC20 AT Commands Manual 2.22. AT+CFUN Set Phone Functionality AT+CFUN controls the functionality level. It can also be used to reset the UE. AT+CFUN Set Phone Functionality Test Command AT+CFUN=? Response +CFUN: (list of supported s),(list of supported s) OK Read Command AT+CFUN? Response +CFUN: l e t l c a e i t u n Q ide f n o C OK Write Command AT+CFUN= [, ] Response OK If error is related to ME functionality: +CME ERROR: Maximum Response Time 15s, determined by network. Reference 3GPP TS 27.007 Parameter 0 1 4 0 1 Example Minimum functionality Full functionality (Default) Disable phone both transmit and receive RF circuits Do not reset the ME before setting it to power level. This is default when is not given. Reset the ME. The device is fully functional after the reset. This value is available only for =1 AT+CFUN=0 OK AT+COPS? +COPS: 0 //Switch phone to minimum functionality //No operator is registered OK AT+CPIN? EC20_AT_Commands_Manual Confidential / Released 26 / 230 LTE Module Series EC20 AT Commands Manual +CME ERROR: 10 AT+CFUN=1 OK //SIM is not inserted //Switch phone to full functionality +CPIN: SIM PIN AT+CPIN=1234 OK +CPIN: READY +QUSIM: 1 l e t l c a e i t u n Q ide f n o C +QIND: PB DONE +QIND: SMS DONE AT+CPIN? +CPIN: READY OK AT+COPS? +COPS: 0,0,"CHN-UNICOM",7 OK //Operator is registered 2.23. AT+CMEE Error Message Format AT+CMEE controls the format of error result codes: “ERROR”, error numbers or verbose messages as “+CME ERROR: ” and “+CMS ERROR: ”. AT+CMEE Error Message Format Test Command AT+CMEE=? Response +CMEE: (list of supported s) OK Read Command AT+CMEE? Response +CMEE: OK Write Command AT+CMEE= EC20_AT_Commands_Manual Response TA disables or enables the use of result code +CME ERROR: as an indication of an error related to the functionality of the ME. Confidential / Released 27 / 230 LTE Module Series EC20 AT Commands Manual OK Maximum Response Time 300ms Reference 3GPP TS 27.007 Parameter 0 1 2 Example Disable result code Enable result code and use numeric values Enable result code and use verbose values l e t l c a e i t u n Q ide f n o C AT+CMEE=0 OK AT+CPIN? ERROR AT+CMEE=1 OK AT+CPIN? +CME ERROR: 10 AT+CMEE=2 //Disable result code //Only “ERROR” will be displayed //Enable error result code with numeric values //Enable error result code with verbose (string) values OK AT+CPIN? +CME ERROR: SIM not inserted 2.24. AT+CSCS Select TE Character Set AT+CSCS write command informs the module which character set is used by the TE. This enables the UE to convert character strings correctly between TE and UE character sets. AT+CSCS Select TE Character Set Test Command AT+CSCS=? Response +CSCS: (list of supported s) OK Read Command AT+CSCS? EC20_AT_Commands_Manual Response +CSCS: Confidential / Released 28 / 230 LTE Module Series EC20 AT Commands Manual OK Write Command AT+CSCS= Response Set character set which is used by the TE. The TA can then convert character strings correctly between the TE and ME character sets. OK Maximum Response Time 300ms Reference 3GPP TS 27.007 Parameter l e t l c a e i t u n Q ide f n o C “GSM” “IRA” “UCS2” Example AT+CSCS? +CSCS: “GSM” GSM default alphabet International reference alphabet UCS2 alphabet //Query the current character set OK AT+CSCS=“UCS2” OK AT+CSCS? +CSCS: “UCS2” OK 2.25. AT+QURCCFG //Set the character set to “UCS2” Configure URC Indication Option This command is used to configure the output port of URC. AT+QURCCFG Configure URC Indication Option Test Command AT+QURCCFG=? Response +QURCCFG: "urcport",(list of supported s) OK Write Command AT+QURCCFG="urcport"[, ] +QURCCFG: "urcport", OK If configuration parameters are entered, response: OK ERROR Read Command AT+QURCCFG? Response Return current configurations: +QURCCFG: "urcport", OK l e t l c a e i t u n Q ide f n o C Maximum Response Time Reference Quectel Parameter NOTES 300ms Set URC output port "usbat" "usbmodem" "uart1" USB AT port USB modem port Main UART 1. Configuration of URC output port will be saved to NV immediately by default. 2. After configuration of URC output port is set successfully, it will take effect immediately. Example AT+QURCCFG=? +QURCCFG: "urcport",("usbat","usbmodem","uart1") OK AT+QURCCFG? +QURCCFG: "urcport","usbat" OK AT+QURCCFG="urcport","usbmodem" OK AT+QURCCFG? +QURCCFG: "urcport","usbmodem" OK EC20_AT_Commands_Manual Confidential / Released 30 / 230 LTE Module Series EC20 AT Commands Manual 3 Serial Interface Control Commands 3.1. AT&C Set DCD Function Mode l e t l c a e i t u n Q ide f n o C AT&C controls the behavior of the UE‟s DCD line. AT&C Set DCD Function Mode Execution Command AT&C[ ] Response This parameter determines how the state of circuit 109(DCD) relates to the detection of received line signal from the distant end. OK Maximum Response Time 300ms Reference V.25ter Parameter 0 1 3.2. AT&D DCD line is always ON DCD line is ON only in the presence of data carrier Set DTR Function Mode AT&D determines how the UE responds if DTR line is changed from the ON to the OFF condition during online data mode. AT&D Set DTR Function Mode Execution Command AT&D[ ] Response This parameter determines how the TA responds when circuit 108/2 (DTR) is changed from the ON to the OFF condition during data mode. OK Maximum Response Time 300ms EC20_AT_Commands_Manual Confidential / Released 31 / 230 LTE Module Series EC20 AT Commands Manual Reference V.25ter Parameter 0 1 2 TA ignores status on DTR ON->OFF on DTR: Change to command mode with remaining the connected call ON->OFF on DTR: Disconnect data call, change to command mode. During state DTR = OFF, auto-answer function is disabled l e t l c a e i t u n Q ide f n o C 3.3. AT+ICF Set TE-TA Control Character Framing AT+ICF determines the serial interface character framing format and parity received by TA from TE. AT+ICF Set TE-TA Control Character Framing Test Command AT+ICF=? Response +ICF: (list of supported s),(list of supported s) OK Read Command AT+ICF? Response +ICF: , OK Write Command AT+ICF[= [, ]] Response This parameter setting determines the serial interface character framing format and parity received by TA from TE. OK Maximum Response Time 300ms Reference V.25ter Parameter 3 0 1 2 3 8 data 0 parity 1 stop Odd Even Mark (1) Space (0) EC20_AT_Commands_Manual Confidential / Released 32 / 230 LTE Module Series EC20 AT Commands Manual NOTES 1. 2. The command is applied for command state. The field is ignored if the field specifies no parity. 3.4. AT+IFC Set TE-TA Local Data Flow Control AT+IFC determines the flow control behavior of the serial port. AT+IFC l e t l c a e i t u n Q ide f n o C Set TE-TA Local Data Flow Control Test Command AT+IFC=? Response +IFC: (list of supported s),(list of supported s) OK Read Command AT+IFC? Response +IFC: , OK Write Command AT+IFC= , Response This parameter setting determines the data flow control on the serial interface for data mode. OK Maximum Response Time 300ms Reference V.25ter Parameter Specifies the method will be used by TE when receiving data from TA 0 None 2 RTS flow control Specifies the method will be used by TA when receiving data from TE 0 None 2 CTS flow control NOTE This flow control is applied for data mode. EC20_AT_Commands_Manual Confidential / Released 33 / 230 LTE Module Series EC20 AT Commands Manual Example AT+IFC=2,2 OK AT+IFC? +IFC: 2,2 //Open the hardware flow control OK 3.5. AT+IPR Set TE-TA Fixed Local Rate l e t l c a e i t u n Q ide f n o C AT+IPR is used to query and set the baud rate of the UART. The default baud rate value ( ) is 115200bps. setting will not be restored with AT&F. AT+IPR Set TE-TA Fixed Local Rate Test Command AT+IPR=? Response +IPR: (list of supported auto detectable s),(list of supported fixed-only s) OK Read Command AT+IPR? Response +IPR: OK Write Command AT+IPR= Maximum Response Time Reference V.25ter Response This parameter setting determines the data rate of the TA on the serial interface. After the delivery of any result code associated with the current command line, the rate of command takes effect. OK 300ms Parameter Baud rate per second 9600 19200 38400 57600 EC20_AT_Commands_Manual Confidential / Released 34 / 230 LTE Module Series EC20 AT Commands Manual 115200 230400 460800 921600 NOTES 1. 2. 3. 4. If a fixed baud rate is set, make sure that both TE (DTE, usually external processor) and TA (DCE, Quectel module) are configured to the same rate. The value of AT+IPR cannot be restored with AT&F and ATZ, but it is still storable with AT&W. In multiplex mode, the baud rate cannot be changed by the write command AT+IPR= , and the setting is invalid and not stored even if AT&W is executed after the write command. A selected baud rate takes effect after the write commands are executed and acknowledged by "OK". Example AT+IPR=115200 OK AT&W OK AT+IPR? +IPR: 115200 l e t l c a e i t u n Q ide f n o C //Set fixed baud rate to 115200 //Store current setting, that is, the serial communication speed is 115200 after restarting module OK AT+IPR=115200;&W OK 3.6. AT+QRIR //Set fixed baud rate to 115200 and store current setting Restore Ring indicator to Inactive If the behavior of ring indicator is "always", you should restore ring indicator to inactive state by AT+QRIR. The behavior of ring indicator is controlled by AT+QCFG. Please refer to AT+QCFG="urc/ri/ring", AT+QCFG="urc/ri/other" and AT+QCFG="urc/ri/smsincoming". AT+QRIR Restore Ring indicator to Inactive State Test Command AT+QRIR=? Response OK Execution Command AT+QRIR Response OK ERROR Maximum Response Time 300ms EC20_AT_Commands_Manual Confidential / Released 35 / 230 LTE Module Series EC20 AT Commands Manual 4 Status Control Commands 4.1. AT+CPAS Mobile Equipment Activity Status l e t l c a e i t u n Q ide f n o C AT+CPAS execute command queries the module‟s activity status. AT+CPAS Mobile Equipment Activity Status Test Command AT+CPAS=? Response +CPAS: (list of supported s) OK Execution Command AT+CPAS Response TA returns the activity status of ME: +CPAS: OK ERROR If error is related to ME functionality: +CME ERROR: Maximum Response Time 300ms Reference 3GPP TS 27.007 Parameter 0 3 4 Ready Ringing Call in progress or call hold Example AT+CPAS +CPAS: 0 //Module is idle OK EC20_AT_Commands_Manual Confidential / Released 36 / 230 LTE Module Series EC20 AT Commands Manual RING AT+CLCC +CLCC: 1,0,0,1,0,"",128 +CLCC: 2,1,4,0,0,“055165869386”,161 OK AT+CPAS +CPAS: 3 //Module is ringing OK ATA OK AT+CLCC +CLCC: 1,0,0,1,0,"",128 +CLCC: 2,1,0,0,0,"055165869386",161 OK AT+CPAS +CPAS: 4 OK l e t l c a e i t u n Q ide f n o C //Call in progress 4.2. AT+CEER Extended Error Report AT+CEER is used to query an extended error and report the cause of the last failed operation, such as: Fail to release call Fail to set up a call (both mobile originated or terminated) Fail to modify a call by using Supplementary Services Fail to activate, register, query, deactivate or deregister a Supplementary Service Fail to attach GPRS or fail to activate PDP context Fail to detach GPRS or fail to deactivate PDP context The release cause is a text to describe the cause information given by the network. AT+CEER Extended Error Report Test command AT+CEER=? Response OK Execution command AT+CEER Response +CEER: OK EC20_AT_Commands_Manual Confidential / Released 37 / 230 LTE Module Series EC20 AT Commands Manual ERROR If error is related to ME functionality: +CME ERROR: Maximum Response Time 300ms Reference 3GPP TS 27.007 Parameter l e t l c a e i t u n Q ide f n o C Release cause text. Reason for the last call failure to setup or release (listed in 14.9 Release Cause Text List of AT+CEER). Both CS and PS domain call types are reported. Cause data is captured from Call Manager events and cached locally to later use by this command. 4.3. AT+QCFG Extended Configuration Settings AT+QCFG is used to query and configure various settings of UE. AT+QCFG Extended Configuration Settings Test Command AT+QCFG=? EC20_AT_Commands_Manual Response +QCFG: “gprsattach”, (list of supported s) +QCFG: “nwscanmode”, (list of supported s), (list of supported s) +QCFG: “nwscanseq”, (list of supported s), (list of supported s) +QCFG: “roamservice”, (list of supported s), (list of supported s) +QCFG: “servicedomain”, (list of supported s), (list of supported s) +QCFG: “band”, (list of supported s), (list of supported s) (list of supported s),(list s) +QCFG: “hsdpacat”, Confidential / Released of supported 38 / 230 LTE Module Series EC20 AT Commands Manual (list of supported s) +QCFG: “hsupacat”, (list of supported s) +QCFG: “rrc”, (list of supported s) +QCFG: “sgsn”, (list of supported s) +QCFG: “msc”, (list of supported s) +QCFG: “PDP/DuplicateChk”, (list of supported s) +QCFG: "airplanecontrol", (list of supported s) +QCFG: “TDSCSQ”, (list of supported s) +QCFG: “apready”, (list of supported s), (list of supported s), (list of supported s) +QCFG: "risignaltype", (list of supported s) +QCFG: "urc/ri/ring", (list of supported s), (list of supported s), (list of supported s), (list of supported s), (list of supported s) +QCFG: "urc/ri/smsincoming", (list of supported s), (list of supported s) +QCFG: "urc/ri/other", (list of supported s), (list of supported s) +QCFG: "usbid", (list of supported s), (list of supported s) +QCFG: "ehrpd", (list of supported s) +QCFG: "tone/incoming", (list of supported s) l e t l c a e i t u n Q ide f n o C OK Maximum Response Time EC20_AT_Commands_Manual 300ms Confidential / Released 39 / 230 LTE Module Series EC20 AT Commands Manual Reference Quectel 4.3.1. AT+QCFG="gprsattach" GPRS Attach Mode Configuration AT+QCFG=“gprsattach” specifies the mode to attach GPRS when UE is powered on. This configuration is valid only after the module is restarted. AT+QCFG="gprsattach" GPRS Attach Mode Configuration Write Command AT+QCFG=“gprsattach”[, ] Response If configuration parameters are omitted (+QCFG=“gprsattach”), return current configuration: +QCFG: “gprsattach”, l e t l c a e i t u n Q ide f n o C OK If configuration parameters are entered: OK ERROR If error is related to ME functionality: +CME ERROR: Maximum Response Time Reference Quectel Parameter 300ms Number format, the mode to attach GRPS when UE is powered on 0 Manual attach 1 Auto attach 4.3.2. AT+QCFG="nwscanmode" Network Search Mode Configuration AT+QCFG=“nwscanmode” specifies the mode of searching network. If is omitted, the configuration will take effect immediately. AT+QCFG="nwscanmode" Network Search Mode Configuration Write Command AT+QCFG=“nwscanmode”[, [, ]] EC20_AT_Commands_Manual Response If configuration parameters are omitted (+QCFG=“nwscanmode”), return current configuration: Confidential / Released 40 / 230 LTE Module Series EC20 AT Commands Manual +QCFG: “nwscanmode”, OK If configuration parameters are entered: OK ERROR If error is related to ME functionality: +CME ERROR: Maximum Response Time Reference Quectel Parameter 300ms l e t l c a e i t u n Q ide f n o C Number format, network search mode 0 AUTO 1 GSM only 2 WCDMA only 3 LTE only 4 TD-SCDMA only 5 UMTS only 6 CDMA only 7 HDR only 8 CDMA and EVDO only Number format, when to take effect 0 Take effect after UE reboots 1 Take effect immediately 4.3.3. AT+QCFG="nwscanseq" Network Searching Sequence Configuration AT+QCFG=“nwscanseq” specifies the sequence of searching network. This configuration takes effect only after the module is restarted. AT+QCFG="nwscanseq" Network Searching Sequence Configuration Write Command AT+QCFG=“nwscanseq”[, [, ]] Response If configuration parameters are omitted (+QCFG=“nwscanseq”), return current configuration: +QCFG: “nwscanseq”, OK EC20_AT_Commands_Manual Confidential / Released 41 / 230 LTE Module Series EC20 AT Commands Manual If configuration parameters are entered: OK ERROR If error is related to ME functionality: +CME ERROR: Maximum Response Time 300ms Reference Quectel Parameter NOTES 1. 2. l e t l c a e i t u n Q ide f n o C Number format, network search sequence (eg.: 04030201(LTE/WCDMA/TD-SCDMA/GSM)) 00 Automatic 01 GSM 02 TD-SCDMA 03 WCDMA 04 LTE 05 CDMA Number format, when to take effect 0 Take effect after UE reboots 1 Take effect immediately The network mode in the network search sequence will be ignored when module doesn‟t support it. The CDMA network will be searched after LTE/WCDMA/TD-SCDMA/GSM though it has not been included in the sequence. 4.3.4. AT+QCFG="roamservice" Roam Service Configuration AT+QCFG=“roamservice” is used to enable or disable the roam service. If is omitted, the configuration will take effect immediately. AT+QCFG="roamservice" Roam Service Configuration Write Command AT+QCFG=“roamservice”[, [, ]] EC20_AT_Commands_Manual Response If configuration parameters are omitted (+QCFG=“roamservice”), return current configuration: +QCFG: “roamservice”, Confidential / Released 42 / 230 LTE Module Series EC20 AT Commands Manual OK If configuration parameters are entered: OK ERROR If error is related to ME functionality: +CME ERROR: Maximum Response Time Reference Quectel Parameter 300ms l e t l c a e i t u n Q ide f n o C Number format, the mode of roam service 1 Disable roam service 2 Enable roam service 255 AUTO Number format, when to take effect 0 Take effect after UE reboots 1 Take effect immediately 4.3.5. AT+QCFG="servicedomain" Service Domain Configuration AT+QCFG=“servicedomain” specifies the registered service domain. If is omitted, the configuration will take effect immediately. AT+QCFG="servicedomain" Service Domain Configuration Write Command AT+QCFG=“servicedomain”[, [, ]] Response If configuration parameters are omitted (+QCFG=“servicedomain”), return current configuration: +QCFG: “servicedomain”, OK If configuration parameters are entered: OK ERROR If error is related to ME functionality: +CME ERROR: EC20_AT_Commands_Manual Confidential / Released 43 / 230 LTE Module Series EC20 AT Commands Manual Maximum Response Time 300ms Reference Quectel Parameter Service domain of UE 0 CS only 1 PS only 2 CS & PS Number format, when to take effect 0 Take effect after UE reboots 1 Take effect immediately l e t l c a e i t u n Q ide f n o C 4.3.6. AT+QCFG="band" Band Configuration AT+QCFG=“band” specifies the band of UE. If is omitted, the configuration will take effect immediately. AT+QCFG="band" Band Configuration Write Command AT+QCFG=“band”[, , , [, ]] Response If configuration parameters are omitted (+QCFG=“band”), return current configuration: +QCFG: “band”, , , OK If configuration parameters are entered: OK ERROR If error is related to ME functionality: +CME ERROR: Maximum Response Time Reference Quectel 300ms Parameter A hexadecimal value that specifies the GSM, WCDMA and CDMA frequency band. If set to 0 it means not to change GSM, WCDMA and EC20_AT_Commands_Manual Confidential / Released 44 / 230 LTE Module Series EC20 AT Commands Manual frequency band. (eg.: 00000013=00000001(GSM900)+00000002(GSM1800)+00000010(WCDMA 2100)) 00000000 No change 00000001 GSM900 00000002 GSM1800 00000004 GSM850 00000008 GSM1900 00000010 WCDMA 2100 00000020 WCDMA 1900 00000040 WCDMA 850 00000080 WCDMA 900 00000100 WCDMA 800 00000200 WCDMA 1700 00000400 CDMA BC0 0000FFFF Any frequency band A hexadecimal value that specifies the LTE frequency band. If set to 0 or 0x40000000 it means not to change LTE frequency band. (eg.: 0x15=0x1( LTE BC1)+0x4( LTE BC3)+0x10( LTE BC5)) 0x1 (CM_BAND_PREF_LTE_EUTRAN_BAND1) LTE BC1 0x4 (CM_BAND_PREF_LTE_EUTRAN_BAND3) LTE BC3 0x10 (CM_BAND_PREF_LTE_EUTRAN_BAND5) LTE BC5 0x40 (CM_BAND_PREF_LTE_EUTRAN_BAND7) LTE BC7 0x80 (CM_BAND_PREF_LTE_EUTRAN_BAND8) LTE BC8 0x80000(CM_BAND_PREF_LTE_EUTRAN_BAND20) LTE BC20 0x7FFFFFFFFFFFFFFF(CM_BAND_PREF_ANY) Any frequency band A hexadecimal value that specifies the TDS-CDMA frequency band. If set to 0 or 0x40000000 it means not to change TDS-CDMA frequency band. (eg.: 0x21=0x1( TDS BCA) +0x20( TDS BCF)) 0x1 (CM_BAND_PREF_TDS_BANDA) TDS BCA 0x2 (CM_BAND_PREF_TDS_BANDB) TDS BCB 0x4 (CM_BAND_PREF_TDS_BANDC) TDS BCC 0x8 (CM_BAND_PREF_TDS_BANDD) TDS BCD 0x10 (CM_BAND_PREF_TDS_BANDE) TDS BCE 0x20 (CM_BAND_PREF_TDS_BANDF) TDS BCF When to take effect 0 Take effect after UE reboots 1 Take effect immediately l e t l c a e i t u n Q ide f n o C 4.3.7. AT+QCFG="hsdpacat" HSDPA Category Configuration AT+QCFG=“hsdpacat” specifies the HSDPA category. This configuration is valid only after the module is EC20_AT_Commands_Manual Confidential / Released 45 / 230 LTE Module Series EC20 AT Commands Manual restarted. AT+QCFG="hsdpacat" HSDPA Category Configuration Write Command AT+QCFG=“hsdpacat”[, ] Response If configuration parameters are omitted (+QCFG=”hsdpacat”), return current configuration: +QCFG: “hsdpacat”, OK If configuration parameters are entered: OK ERROR l e t l c a e i t u n Q ide f n o C If error is related to ME functionality: +CME ERROR: Maximum Response Time Reference Quectel Parameter 300ms HSDPA category 6 Category 6 8 Category 8 10 Category 10 12 Category 12 14 Category 14 18 Category 18 20 Category 20 24 Category 24 4.3.8. AT+QCFG="hsupacat" HSUPA Category Configuration AT+QCFG=“hsupacat” specifies the HSUPA category. This configuration is valid only after the module is restarted. AT+QCFG="hsupacat" HSUPA Category Configuration Write Command AT+QCFG=“hsupacat”[, ] EC20_AT_Commands_Manual Response If configuration parameters are omitted (+QCFG=“hsupacat”), return current configuration: +QCFG: “hsupacat”, Confidential / Released 46 / 230 LTE Module Series EC20 AT Commands Manual OK If configuration parameters are entered: OK ERROR If error is related to ME functionality: +CME ERROR: Maximum Response Time Reference Quectel Parameter 300ms l e t l c a e i t u n Q ide f n o C HSUPA category 5 Category 5 6 Category 6 4.3.9. AT+QCFG="rrc" RRC Release Version Configuration AT+QCFG="rrc" specifies the RRC release version. This configuration is valid only after the module is restarted. AT+QCFG="rrc" RRC Release Version Configuration Write Command AT+QCFG=“rrc”[, ] Response If configuration parameters are omitted (+QCFG=“rrc”), return current configuration: +QCFG: “rrc”,