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Quectel_EC20 R2.0_AT_Commands_Manual_V1.0.pdf
About the Document
Contents
Table Index
1 Introduction
1.1. Scope of the Document
1.2. AT Command Syntax
1.3. Supported Character Sets
1.4. AT Command Interface
1.5. Unsolicited Result Code
1.6. Turn off Procedure
2 General Commands
2.1. ATI Display Product Identification Information
2.2. AT+GMI Request Manufacturer Identification
2.3. AT+GMM Request TA Model Identification
2.4. AT+GMR Request TA Revision Identification of Software Release
2.5. AT+CGMI Request Manufacturer Identification
2.6. AT+CGMM Request Model Identification
2.7. AT+CGMR Request TA Revision Identification of Software Release
2.8. AT+GSN Request International Mobile Equipment Identity (IMEI)
2.9. AT+CGSN Request Product Serial Number Identification
2.10. AT&F Set all Current Parameters to Manufacturer Defaults
2.11. AT&V Display Current Configuration
2.12. AT&W Store Current Parameters to User Defined Profile
2.13. ATZ Set all Current Parameters to User Defined Profile
2.14. ATQ Set Result Code Presentation Mode
2.15. ATV TA Response Format
2.16. ATE Set Command Echo Mode
2.17. A/ Repeat Previous Command Line
2.18. ATS3 Set Command Line Termination Character
2.19. ATS4 Set Response Formatting Character
2.20. ATS5 Set Command Line Editing Character
2.21. ATX Set CONNECT Result Code Format and Monitor Call Progress
2.22. AT+CFUN Set Phone Functionality
2.23. AT+CMEE Error Message Format
2.24. AT+CSCS Select TE Character Set
2.25. AT+QURCCFG Configure URC Indication Option
3 Serial Interface Control Commands
3.1. AT&C Set DCD Function Mode
3.2. AT&D Set DTR Function Mode
3.3. AT+IFC Set TE-TA Local Data Flow Control
3.4. AT+ICF Set TE-TA Control Character Framing
3.5. AT+IPR Set TE-TA Fixed Local Rate
4 Status Control Commands
4.1. AT+CPAS Mobile Equipment Activity Status
4.2. AT+CEER Extended Error Report
4.3. AT+QCFG Extended Configuration Settings
4.3.1. AT+QCFG="gprsattach" GPRS Attach Mode Configuration
4.3.2. AT+QCFG="nwscanmode" Network Search Mode Configuration
4.3.3. AT+QCFG="nwscanseq" Network Searching Sequence Configuration
4.3.4. AT+QCFG="roamservice" Roam Service Configuration
4.3.5. AT+QCFG="servicedomain" Service Domain Configuration
4.3.6. AT+QCFG="band" Band Configuration
4.3.7. AT+QCFG="hsdpacat" HSDPA Category Configuration
4.3.8. AT+QCFG="hsupacat" HSUPA Category Configuration
4.3.9. AT+QCFG="rrc" RRC Release Version Configuration
4.3.10. AT+QCFG="sgsn" UE SGSN Release Version Configuration
4.3.11. AT+QCFG="msc" UE MSC Release Version Configuration
4.3.12. AT+QCFG="PDP/DuplicateChk" Establish Multi PDNs with the Same APN
4.3.13. AT+QCFG="TDSCSQ" Set TDSCDMA RSSI Range
5 SIM Related Commands
5.1. AT+CIMI Request International Mobile Subscriber Identity (IMSI)
5.2. AT+CLCK Facility Lock
5.3. AT+CPIN Enter PIN
5.4. AT+CPWD Change Password
5.5. AT+CSIM Generic SIM Access
5.6. AT+CRSM Restricted SIM Access
5.7. AT+QCCID Show ICCID
5.8. AT+QPINC Display PIN Remainder Counter
5.9. AT+QSIMDET SIM Card Detection
5.10. AT+QSIMSTAT SIM Inserted Status Report
6 Network Service Commands
6.1. AT+COPS Operator Selection
6.2. AT+CREG Network Registration
6.3. AT+CSQ Signal Quality Report
6.4. AT+CPOL Preferred Operator List
6.5. AT+COPN Read Operator Names
6.6. AT+CTZU Automatic Time Zone Update
6.7. AT+CTZR Time Zone Reporting
6.8. AT+QNWINFO Query Network Information
7 Call Related Commands
7.1. ATA Answer an Incoming Call
7.2. ATD Mobile Originated Call to Dial a Number
7.3. ATH Disconnect Existing Connection
7.4. AT+CVHU Voice Hang up Control
7.5. AT+CHUP Hang up Call
7.6. +++ Switch from Data Mode to Command Mode
7.7. ATO Switch from Command Mode to Data Mode
7.8. ATS0 Set Number of Rings before Automatically Answering Call
7.9. ATS6 Set Pause before Blind Dialing
7.10. ATS7 Set Number of Seconds to Wait for Connection Completion
7.11. ATS8 Set the Number of Seconds to Wait for Comma Dial Modifier
7.12. ATS10 Set Disconnect Delay after Indicating the Absence of Data Carrier
7.13. AT+CBST Select Bearer Service Type
7.14. AT+CSTA Select Type of Address
7.15. AT+CLCC List Current Calls of ME
7.16. AT+CR Service Reporting Control
7.17. AT+CRC Set Cellular Result Codes for Incoming Call Indication
7.18. AT+CRLP Select Radio Link Protocol Parameter
7.19. AT+QECCNUM Configure Emergency Call Numbers
8 Phonebook Commands
8.1. AT+CNUM Subscriber Number
8.2. AT+CPBF Find Phonebook Entries
8.3. AT+CPBR Read Phonebook Entries
8.4. AT+CPBS Select Phonebook Memory Storage
8.5. AT+CPBW Write Phonebook Entry
9 Short Message Service Commands
9.1. AT+CSMS Select Message Service (Not Effective in CDMA Network)
9.2. AT+CMGF Message Format
9.3. AT+CSCA Service Center Address (Not Effective in CDMA Network)
9.4. AT+CPMS Preferred Message Storage
9.5. AT+CMGD Delete Message
9.6. AT+CMGL List Messages
9.7. AT+CMGR Read Message
9.8. AT+CMGS Send Message
9.9. AT+CMMS More Messages to Send (Not Effective in CDMA Network)
9.10. AT+CMGW Write Message to Memory
9.11. AT+CMSS Send Message from Storage
9.12. AT+CNMA New Message Acknowledgement to UE/TE (Not Effective in CDMA Network)
9.13. AT+CNMI SMS Event Reporting Configuration
9.14. AT+CSCB Select Cell Broadcast Message Types (Not Effective in CDMA Network)
9.15. AT+CSDH Show SMS Text Mode Parameters (Not Effective in CDMA Network)
9.16. AT+CSMP Set SMS Text Mode Parameters (Not Effective in CDMA Network)
9.17. AT+QCMGS Send Concatenated Messages
9.18. AT+QCMGR Read Concatenated Messages
9.19. AT+QCSMP Set CDMA SMS Text Mode Parameters
9.20. AT+QSMSR Read Message
9.21. AT+QSMSL List Messages
10 Packet Domain Commands
10.1. AT+CGATT Attachment or Detachment of PS
10.2. AT+CGDCONT Define PDP Context
10.3. AT+CGQREQ Quality of Service Profile (Requested)
10.4. AT+CGQMIN Quality of Service Profile (Minimum Acceptable)
10.5. AT+CGEQREQ 3G Quality of Service Profile (Requested)
10.6. AT+CGEQMIN 3G Quality of Service Profile (Minimum Acceptable)
10.7. AT+CGACT Activate or Deactivate PDP Context
10.8. AT+CGDATA Enter Data State
10.9. AT+CGPADDR Show PDP Address
10.10. AT+CGCLASS GPRS Mobile Station Class
10.11. AT+CGREG Network Registration Status
10.12. AT+CGEREP Packet Domain Event Reporting
10.13. AT+CGSMS Select Service for MO SMS Messages
10.14. AT+CEREG EPS Network Registration Status
10.15. AT+QGDCNT Packet Data Counter
10.16. AT+QAUGDCNT Auto Save Packet Data Counter
11 Supplementary Service Commands
11.1. AT+CCFC Call Forwarding Number and Conditions Control
11.2. AT+CCWA Call Waiting Control
11.3. AT+CHLD Call Related Supplementary Services
11.4. AT+CLIP Calling Line Identification Presentation
11.5. AT+CLIR Calling Line Identification Restriction
11.6. AT+COLP Connected Line Identification Presentation
11.7. AT+CSSN Supplementary Service Notifications
11.8. AT+CUSD Unstructured Supplementary Service Data
12 Audio Commands
12.1. AT+CLVL Loud Speaker Volume Level
12.2. AT+CMUT Mute Control
12.3. AT+QAUDLOOP Enable Audio Loop Test
12.4. AT+VTS DTMF and Tone Generation
12.5. AT+VTD Set Tone Duration
12.6. AT+QAUDMOD Set Audio Mode
12.7. AT+QDAI Digital Audio Interface Configure
13 Hardware Related Commands
13.1. AT+QPOWD Power off
13.2. AT+CCLK Clock
13.3. AT+CBC Battery Charge
13.4. AT+QSCLK Configure Whether or Not to Enter into Sleep Mode
14 Appendix
14.1. References
14.2. Factory Default Settings Restorable with AT&F
14.3. AT Command Settings Storable with AT&W
14.4. AT Command Settings Storable with ATZ
14.5. Summary of CME ERROR Codes
14.6. Summary of CMS ERROR Codes
14.7. Summary of URC
14.8. SMS Character Sets Conversions
14.9. Release Cause Text List of AT+CEER
EC20 R2.0
AT Commands Manual
LTE Module Series
Rev. EC20 R2.0_AT_Commands_Manual_V1.0
Date: 2016-05-30
www.quectel.com
LTE Module Series
EC20 R2.0 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:
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. ALL 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.
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EC20 R2.0 AT Commands Manual
About the Document
History
Revision Date
Author
Description
1.0
2016-05-30
James CAI/
Bonnie ZHAO
Initial
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EC20 R2.0 AT Commands Manual
Contents
About the Document ................................................................................................................................... 2
Contents ....................................................................................................................................................... 3
Table Index ................................................................................................................................................... 7
1
Introduction .......................................................................................................................................... 8
1.1.
1.2.
1.3.
1.4.
Scope of the Document ............................................................................................................. 8
AT Command Syntax ................................................................................................................. 8
Supported Character Sets ......................................................................................................... 9
AT Command Interface .............................................................................................................. 9
1.5. Unsolicited Result Code ............................................................................................................ 9
1.6.
Turn off Procedure ................................................................................................................... 10
2 General Commands ........................................................................................................................... 11
2.1.
2.2.
2.3.
2.4.
2.5.
2.6.
2.7.
2.8.
2.9.
ATI Display Product Identification Information ...................................................................... 11
AT+GMI Request Manufacturer Identification ...................................................................... 12
AT+GMM Request TA Model Identification ........................................................................... 12
AT+GMR Request TA Revision Identification of Software Release ..................................... 13
AT+CGMI Request Manufacturer Identification .................................................................... 13
AT+CGMM Request Model Identification ............................................................................. 14
AT+CGMR Request TA Revision Identification of Software Release ................................... 14
AT+GSN Request International Mobile Equipment Identity (IMEI) ...................................... 15
AT+CGSN Request Product Serial Number Identification ................................................... 16
2.10. AT&F Set all Current Parameters to Manufacturer Defaults ................................................ 16
2.11. AT&V Display Current Configuration .................................................................................... 17
2.12. AT&W Store Current Parameters to User Defined Profile .................................................... 18
2.13. ATZ Set all Current Parameters to User Defined Profile ...................................................... 18
2.14. ATQ Set Result Code Presentation Mode ............................................................................ 19
2.15. ATV TA Response Format .................................................................................................... 19
2.16. ATE Set Command Echo Mode ............................................................................................ 21
2.17. A/ Repeat Previous Command Line ..................................................................................... 21
2.18. ATS3 Set Command Line Termination Character ................................................................. 22
2.19. ATS4 Set Response Formatting Character .......................................................................... 23
2.20. ATS5 Set Command Line Editing Character ........................................................................ 23
2.21. ATX Set CONNECT Result Code Format and Monitor Call Progress ................................. 24
2.22. AT+CFUN Set Phone Functionality ...................................................................................... 25
2.23. AT+CMEE Error Message Format ........................................................................................ 26
2.24. AT+CSCS Select TE Character Set ...................................................................................... 27
2.25. AT+QURCCFG Configure URC Indication Option ............................................................... 28
3 Serial Interface Control Commands ................................................................................................ 30
3.1.
3.2.
3.3.
AT&C Set DCD Function Mode ............................................................................................ 30
AT&D Set DTR Function Mode ............................................................................................. 30
AT+IFC Set TE-TA Local Data Flow Control ........................................................................... 31
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3.4.
3.5.
AT+ICF Set TE-TA Control Character Framing .................................................................... 32
AT+IPR Set TE-TA Fixed Local Rate .................................................................................... 33
4 Status Control Commands ............................................................................................................... 35
4.1.
4.2.
4.3.
AT+CPAS Mobile Equipment Activity Status ......................................................................... 35
AT+CEER Extended Error Report ........................................................................................ 36
AT+QCFG Extended Configuration Settings ........................................................................ 37
4.3.1. AT+QCFG="gprsattach" GPRS Attach Mode Configuration ....................................... 38
4.3.2. AT+QCFG="nwscanmode" Network Search Mode Configuration.............................. 38
4.3.3. AT+QCFG="nwscanseq" Network Searching Sequence Configuration ..................... 39
4.3.4. AT+QCFG="roamservice" Roam Service Configuration ............................................ 40
4.3.5. AT+QCFG="servicedomain" Service Domain Configuration ...................................... 41
4.3.6. AT+QCFG="band" Band Configuration ...................................................................... 42
4.3.7. AT+QCFG="hsdpacat" HSDPA Category Configuration............................................. 43
4.3.8. AT+QCFG="hsupacat" HSUPA Category Configuration ............................................ 44
4.3.9. AT+QCFG="rrc" RRC Release Version Configuration ............................................... 45
4.3.10. AT+QCFG="sgsn" UE SGSN Release Version Configuration ................................... 45
4.3.11. AT+QCFG="msc" UE MSC Release Version Configuration ....................................... 46
4.3.12. AT+QCFG="PDP/DuplicateChk" Establish Multi PDNs with the Same APN ............. 47
4.3.13. AT+QCFG="TDSCSQ" Set TDSCDMA RSSI Range ................................................. 47
5 SIM Related Commands .................................................................................................................... 49
5.1.
5.2.
5.3.
5.4.
5.5.
5.6.
5.7.
5.8.
5.9.
AT+CIMI Request International Mobile Subscriber Identity (IMSI) ....................................... 49
AT+CLCK Facility Lock ......................................................................................................... 50
AT+CPIN Enter PIN .............................................................................................................. 52
AT+CPWD Change Password .............................................................................................. 54
AT+CSIM Generic SIM Access ............................................................................................. 55
AT+CRSM Restricted SIM Access ........................................................................................ 56
AT+QCCID Show ICCID ....................................................................................................... 57
AT+QPINC Display PIN Remainder Counter........................................................................ 58
AT+QSIMDET SIM Card Detection ....................................................................................... 58
5.10. AT+QSIMSTAT SIM Inserted Status Report ......................................................................... 60
6 Network Service Commands ............................................................................................................ 62
6.1.
6.2.
6.3.
6.4.
6.5.
6.6.
6.7.
6.8.
AT+COPS Operator Selection .............................................................................................. 62
AT+CREG Network Registration ........................................................................................... 64
AT+CSQ Signal Quality Report ............................................................................................. 66
AT+CPOL Preferred Operator List ........................................................................................ 68
AT+COPN Read Operator Names ........................................................................................ 69
AT+CTZU Automatic Time Zone Update .............................................................................. 70
AT+CTZR Time Zone Reporting ........................................................................................... 71
AT+QNWINFO Query Network Information .......................................................................... 72
7 Call Related Commands .................................................................................................................... 75
7.1.
7.2.
ATA Answer an Incoming Call ............................................................................................... 75
ATD Mobile Originated Call to Dial a Number ...................................................................... 76
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7.3.
7.4.
7.5.
7.6.
7.7.
7.8.
7.9.
ATH Disconnect Existing Connection ................................................................................... 77
AT+CVHU Voice Hang up Control ........................................................................................ 78
AT+CHUP Hang up Call ........................................................................................................ 79
+++ Switch from Data Mode to Command Mode ................................................................. 79
ATO Switch from Command Mode to Data Mode ................................................................ 80
ATS0 Set Number of Rings before Automatically Answering Call ........................................ 81
ATS6 Set Pause before Blind Dialing ................................................................................... 82
7.10. ATS7 Set Number of Seconds to Wait for Connection Completion...................................... 82
7.11. ATS8 Set the Number of Seconds to Wait for Comma Dial Modifier ................................... 83
7.12. ATS10 Set Disconnect Delay after Indicating the Absence of Data Carrier ......................... 83
7.13. AT+CBST Select Bearer Service Type ................................................................................. 84
7.14. AT+CSTA Select Type of Address ........................................................................................ 86
7.15. AT+CLCC List Current Calls of ME....................................................................................... 87
7.16. AT+CR Service Reporting Control ........................................................................................ 88
7.17. AT+CRC Set Cellular Result Codes for Incoming Call Indication ........................................ 89
7.18. AT+CRLP Select Radio Link Protocol Parameter ................................................................ 91
7.19. AT+QECCNUM Configure Emergency Call Numbers .......................................................... 92
8 Phonebook Commands ..................................................................................................................... 94
8.1.
8.2.
8.3.
8.4.
8.5.
AT+CNUM Subscriber Number ............................................................................................. 94
AT+CPBF Find Phonebook Entries ...................................................................................... 95
AT+CPBR Read Phonebook Entries .................................................................................... 96
AT+CPBS Select Phonebook Memory Storage .................................................................... 97
AT+CPBW Write Phonebook Entry ....................................................................................... 98
9 Short Message Service Commands ............................................................................................... 100
9.1.
9.2.
9.3.
9.4.
9.5.
9.6.
9.7.
9.8.
9.9.
AT+CSMS Select Message Service (Not Effective in CDMA Network) ............................. 100
AT+CMGF Message Format ............................................................................................... 101
AT+CSCA Service Center Address (Not Effective in CDMA Network) ............................... 102
AT+CPMS Preferred Message Storage .............................................................................. 103
AT+CMGD Delete Message ............................................................................................... 105
AT+CMGL List Messages ................................................................................................... 106
AT+CMGR Read Message ................................................................................................. 109
AT+CMGS Send Message .................................................................................................. 114
AT+CMMS More Messages to Send (Not Effective in CDMA Network) ............................ 115
9.10. AT+CMGW Write Message to Memory............................................................................... 116
9.11. AT+CMSS Send Message from Storage ............................................................................ 118
9.12. AT+CNMA New Message Acknowledgement to UE/TE (Not Effective in CDMA Network)120
9.13. AT+CNMI SMS Event Reporting Configuration .................................................................. 121
9.14. AT+CSCB Select Cell Broadcast Message Types (Not Effective in CDMA Network) ........ 124
9.15. AT+CSDH Show SMS Text Mode Parameters (Not Effective in CDMA Network) ............. 125
9.16. AT+CSMP Set SMS Text Mode Parameters (Not Effective in CDMA Network) ................. 126
9.17. AT+QCMGS Send Concatenated Messages ..................................................................... 127
9.18. AT+QCMGR Read Concatenated Messages ..................................................................... 128
9.19. AT+QCSMP Set CDMA SMS Text Mode Parameters ........................................................ 130
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9.20. AT+QSMSR Read Message ............................................................................................... 131
9.21. AT+QSMSL List Messages ................................................................................................. 135
10 Packet Domain Commands ............................................................................................................ 140
10.1. AT+CGATT Attachment or Detachment of PS .................................................................... 140
10.2. AT+CGDCONT Define PDP Context .................................................................................. 141
10.3. AT+CGQREQ Quality of Service Profile (Requested) ........................................................ 142
10.4. AT+CGQMIN Quality of Service Profile (Minimum Acceptable) ......................................... 145
10.5. AT+CGEQREQ 3G Quality of Service Profile (Requested) ............................................... 148
10.6. AT+CGEQMIN 3G Quality of Service Profile (Minimum Acceptable) ................................. 152
10.7. AT+CGACT Activate or Deactivate PDP Context ............................................................... 156
10.8. AT+CGDATA Enter Data State ............................................................................................ 157
10.9. AT+CGPADDR Show PDP Address ................................................................................... 158
10.10. AT+CGCLASS GPRS Mobile Station Class ....................................................................... 159
10.11. AT+CGREG Network Registration Status ........................................................................... 160
10.12. AT+CGEREP Packet Domain Event Reporting .................................................................. 162
10.13. AT+CGSMS Select Service for MO SMS Messages .......................................................... 164
10.14. AT+CEREG EPS Network Registration Status ................................................................... 165
10.15. AT+QGDCNT Packet Data Counter ................................................................................... 166
10.16. AT+QAUGDCNT Auto Save Packet Data Counter............................................................. 168
11 Supplementary Service Commands .............................................................................................. 170
11.1. AT+CCFC Call Forwarding Number and Conditions Control ............................................. 170
11.2. AT+CCWA Call Waiting Control .......................................................................................... 172
11.3. AT+CHLD Call Related Supplementary Services ............................................................... 174
11.4. AT+CLIP Calling Line Identification Presentation ............................................................... 176
11.5. AT+CLIR Calling Line Identification Restriction .................................................................. 177
11.6. AT+COLP Connected Line Identification Presentation ....................................................... 178
11.7. AT+CSSN Supplementary Service Notifications ................................................................ 180
11.8. AT+CUSD Unstructured Supplementary Service Data ...................................................... 181
12 Audio Commands ............................................................................................................................ 183
12.1. AT+CLVL Loud Speaker Volume Level ............................................................................... 183
12.2. AT+CMUT Mute Control ...................................................................................................... 184
12.3. AT+QAUDLOOP Enable Audio Loop Test .......................................................................... 184
12.4. AT+VTS DTMF and Tone Generation ................................................................................. 185
12.5. AT+VTD Set Tone Duration................................................................................................. 186
12.6. AT+QAUDMOD Set Audio Mode ........................................................................................ 187
12.7. AT+QDAI Digital Audio Interface Configure ........................................................................ 188
13 Hardware Related Commands ........................................................................................................ 190
13.1. AT+QPOWD Power off ....................................................................................................... 190
13.2. AT+CCLK Clock .................................................................................................................. 190
13.3. AT+CBC Battery Charge ..................................................................................................... 191
13.4. AT+QSCLK Configure Whether or Not to Enter into Sleep Mode ...................................... 192
14 Appendix ........................................................................................................................................... 194
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14.1. Reference .............................................................................................................................. 194
14.2. Factory Default Settings Restorable with AT&F .................................................................... 195
14.3. AT Command Settings Storable with AT&W .......................................................................... 197
14.4. AT Command Settings Storable with ATZ ............................................................................. 198
14.5. Summary of CME ERROR Codes ......................................................................................... 199
14.6. Summary of CMS ERROR Codes ......................................................................................... 200
14.7. Summary of URC................................................................................................................... 202
14.8. SMS Character Sets Conversions ......................................................................................... 204
14.9. Release Cause Text List of AT+CEER .................................................................................. 211
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