sc6531 AT Command User Guide
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AT Command User Guide
Issue 02 (2010-10-31) Spreadtrum Communications Inc. i
AT Command User Guide
Version: 2.0.0
DocCode: SW-BASE-UG-0006
Date: Oct 31, 2011
a9d0fa89de80d4d8d05a4f0e
A T Command User Guide
Important Notice
Copyright Notice
Copyright ? 2011, Spreadtrum Communications, Inc. All rights reserved.
Trademarks
Spreadtrum Communications, Inc. and Spreadtrum Communications, Inc.'s products are
exclusively owned by Spreadtrum Communications, Inc. References to other companies and
their products use trademarks owned by the respective companies and are for reference
purpose only.
Warranty Disclaimer
Spreadtrum Communications, Inc. makes no representations or warranties, either expressed or
implied, by or with respect to anything in this document, and shall not be liable for any
implied warranties of merchantability or fitness for a particular purpose or for any indirect,
special or consequential damages.
Confidentiality
The information contained herein (including any attachments) is confidential. The recipient
hereby acknowledges the confidentiality of this document, and except for specific purposes,
this document shall not be disclosed to any third party.
ii Spreadtrum Communications Inc. Issue 01 (2010-10-31)
AT Command User Guide
About This Document
Purpose
The AT Command User Guide describes the AT commands supported by Spreadtrum. Using
these commands, users can control and manage various GSM services such as call, SMS, and
supplementary services. They can control ME related functions such as reading IMEI and
operating the phone book as well.
Intended Audience
This document is intended for the engineers that use the AT command.
Organization
This document consists of eleven chapters and is organized as follows.
Issue 02 (2010-10-31) Spreadtrum Communications Inc. iii
A T Command User Guide
Contents
1 Introduction................................................................................................................................. 1-1
1.1 Overview ....................................................................................................................................................... 1-1
1.2 Related Documents ....................................................................................................................................... 1-1
1.3 Serial Port Configuration .............................................................................................................................. 1-1
1.4 Commands .................................................................................................................................................... 1-2
1.5 Information Response and Final Result Code ............................................................................................... 1-3
1.6 Power-On Procedure ................................................................................................................................... 1-13
1.7 MS Command Procedures ........................................................................................................................... 1-14
1.7.1 MO Call ............................................................................................................................................. 1-14
1.7.2 MT Call .............................................................................................................................................. 1-14
1.7.3 GPRS CONNECT .............................................................................................................................. 1-15
1.8 Mixed Mode Protocol.................................................................................................................................. 1-16
1.8.1 Overview ............................................................................................................................................ 1-16
1.8.2 AT Command Packet .......................................................................................................................... 1-16
1.8.3 Data Packet ........................................................................................................................................ 1-17
2 Common Control Commands ................................................................................................ 2-19
2.1 AT ................................................................................................................................................................ 2-19
2.2 ATZ.............................................................................................................................................................. 2-19
2.3 ATE.............................................................................................................................................................. 2-20
2.4 ATS0 ............................................................................................................................................................ 2-20
2.5 ATQ ............................................................................................................................................................. 2-21
2.6 ATV ............................................................................................................................................................. 2-22
2.7 AT&W ......................................................................................................................................................... 2-22
2.8 AT+CMEE ................................................................................................................................................... 2-24
2.9 AT+CFUN ................................................................................................................................................... 2-25
2.10 AT+CCLK ................................................................................................................................................. 2-26
2.11 AT+IPR ...................................................................................................................................................... 2-27
2.12 AT+CGSN ................................................................................................................................................. 2-28
2.13 AT+CGMM ............................................................................................................................................... 2-29
2.14 AT+CGMR ................................................................................................................................................ 2-30
2.15 AT+CGMI ................................................................................................................................................. 2-31
2.16 AT+CPAS .................................................................................................................................................. 2-32 iv Spreadtrum Communications Inc. Issue 01 (2010-10-31)
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2.17 AT+CCID .................................................................................................................................................. 2-33
2.18 AT+CIMI ................................................................................................................................................... 2-34
2.19 AT+CBC .................................................................................................................................................... 2-35
2.20 AT+CPOF .................................................................................................................................................. 2-36
2.21 AT+CSCS .................................................................................................................................................. 2-37
2.22 AT+SAC .................................................................................................................................................... 2-38
2.23 AT+STONE ............................................................................................................................................... 2-39
2.24 AT+SDTMF .............................................................................................................................................. 2-40
2.25 AT+SBCM ................................................................................................................................................. 2-41
2.26 +SBCI........................................................................................................................................................ 2-42
2.27 AT+CMUX ................................................................................................................................................ 2-43
2.28 AT+CRSM ................................................................................................................................................. 2-45
2.29 AT+CIEV .................................................................................................................................................. 2-46 Network Service Commands ...................................................................................................... 2-2
2.30 AT+COPS .................................................................................................................................................... 2-2
2.31 AT+CSQ ...................................................................................................................................................... 2-4
2.32 AT+CCED ................................................................................................................................................... 2-5
2.33 AT+CREG ................................................................................................................................................... 2-7
2.34 AT+SCREG ................................................................................................................................................. 2-9
3 Call Control Commands ......................................................................................................... 3-10
3.1 ATD ............................................................................................................................................................. 3-10
3.2 ATA ............................................................................................................................................................. 3-11
3.3 ATH ............................................................................................................................................................. 3-11
3.4 AT+VTD...................................................................................................................................................... 3-12
3.5 AT+VTS ...................................................................................................................................................... 3-13
3.6 AT+VGR ..................................................................................................................................................... 3-14
3.7 AT+CMUT .................................................................................................................................................. 3-15
3.8 AT+ECHO ................................................................................................................................................... 3-16
3.9 AT+CICB .................................................................................................................................................... 3-17
3.10 AT+CRMP ................................................................................................................................................. 3-18
3.11 AT+CIND .................................................................................................................................................. 3-19
4 Supplementary Service Commands ..................................................................................... 4-21
4.1 AT+CCFC .................................................................................................................................................... 4-21
4.2 AT+CCWA .................................................................................................................................................. 4-23
4.3 AT+CHLD ................................................................................................................................................... 4-24
4.4 AT+CLIP ..................................................................................................................................................... 4-25
4.5 AT+CLIR ..................................................................................................................................................... 4-26
4.6 AT+COLP .................................................................................................................................................... 4-27
4.7 AT+COLR ................................................................................................................................................... 4-28
4.8 AT+CLCK ................................................................................................................................................... 4-28
4.9 AT+CPWD .................................................................................................................................................. 4-28 Issue 02 (2010-10-31) Spreadtrum Communications Inc. v
A T Command User Guide
4.10 AT+CACM ................................................................................................................................................ 4-29
4.11 AT+CAMM ............................................................................................................................................... 4-30
4.12 AT+CPUC ................................................................................................................................................. 4-30
4.13 AT+CLCC ................................................................................................................................................. 4-31
4.14 AT+CUSD ................................................................................................................................................. 4-32
4.15 AT+CSSN .................................................................................................................................................. 4-33
5 Security Control Commands .................................................................................................. 5-35
5.1 AT+CPIN ..................................................................................................................................................... 5-35
5.2 AT+CPWD .................................................................................................................................................. 5-37
5.3 AT+CLCK ................................................................................................................................................... 5-39
5.4 AT+XX ........................................................................................................................................................ 5-41
6 SMS Commands ....................................................................................................................... 6-42
6.1 AT+CSMS ................................................................................................................................................... 6-42
6.2 AT+CSAS .................................................................................................................................................... 6-43
6.3 AT+CRES .................................................................................................................................................... 6-43
6.4 AT+CSDH ................................................................................................................................................... 6-44
6.5 AT+CPMS ................................................................................................................................................... 6-45
6.6 AT+CSCA ................................................................................................................................................... 6-46
6.7 AT+CMGF .................................................................................................................................................. 6-47
6.8 AT+CMGL .................................................................................................................................................. 6-48
6.9 AT+CMGR .................................................................................................................................................. 6-50
6.10 AT+CMGS ................................................................................................................................................ 6-52
6.11 AT+CSMP ................................................................................................................................................. 6-54
6.12 AT+CMGW ............................................................................................................................................... 6-56
6.13 AT+CMSS ................................................................................................................................................. 6-57
6.14 AT+CMGD ................................................................................................................................................ 6-58
6.15 AT+CSCB .................................................................................................................................................. 6-59
6.16 AT+CNMI ................................................................................................................................................. 6-60
6.17 +CMTI ...................................................................................................................................................... 6-61
6.18 +CMT ........................................................................................................................................................ 6-61
6.19 +CBM........................................................................................................................................................ 6-62
6.20 AT+SMSC ................................................................................................................................................. 6-62
6.21 AT+SUSS .................................................................................................................................................. 6-64
6.22 AT+SCMGS .............................................................................................................................................. 6-64
6.23 AT+SCMGW ............................................................................................................................................. 6-65
7 Phonebook Commands ........................................................................................................... 7-67
7.1 AT+CPBS .................................................................................................................................................... 7-67
7.2 AT+CPBR .................................................................................................................................................... 7-68
7.3 AT+CPBF .................................................................................................................................................... 7-69
7.4 AT+CPBW .................................................................................................................................................. 7-70
7.5 AT+CPBP .................................................................................................................................................... 7-71 vi Spreadtrum Communications Inc. Issue 01 (2010-10-31)
AT Command User Guide
7.6 AT+CPBN ................................................................................................................................................... 7-72
7.7 AT+CNUM .................................................................................................................................................. 7-74
7.8 AT+SDCP .................................................................................................................................................... 7-75
7.9 AT+CSVM .................................................................................................................................................. 7-76
8 STK Commands........................................................................................................................ 8-77
8.1 Overview ..................................................................................................................................................... 8-77
8.2 Interactions Between STK and STK Applications ...................................................................................... 8-78
8.3 STK Commands .......................................................................................................................................... 8-79
8.3.1 AT+STSF ........................................................................................................................................... 8-79
8.3.2 AT+STIN ............................................................................................................................................ 8-80
8.3.3 AT+STGI ............................................................................................................................................ 8-81
8.3.4 AT+STGR .......................................................................................................................................... 8-85
8.4 STK Transparent Mode ............................................................................................................................... 8-87
8.4.1 AT+PSSTKE ...................................................................................................................................... 8-89
8.4.2 AT+PSSTKR ...................................................................................................................................... 8-89
8.4.3 AT+PSSTKI ....................................................................................................................................... 8-90
8.4.4 AT+PSSTKSMS ................................................................................................................................. 8-90
8.4.5 AT+STKREFRESH ............................................................................................................................ 8-92
9 GPRS Commands ..................................................................................................................... 9-94
9.1 AT+CGDCONT........................................................................................................................................... 9-94
9.2 AT+CGQREQ ............................................................................................................................................. 9-96
9.3 AT+CGQMIN .............................................................................................................................................. 9-99
9.4 AT+CGPCO .............................................................................................................................................. 9-101
9.5 AT+CGA TT ............................................................................................................................................... 9-103
9.6 AT+CGACT .............................................................................................................................................. 9-104
9.7 AT+CGPADDR ......................................................................................................................................... 9-105
9.8 AT+CGDATA ............................................................................................................................................ 9-106
9.9 AT+CGAUTO ........................................................................................................................................... 9-107
9.10 AT+CGANS ............................................................................................................................................ 9-108
9.11 AT+CGCLASS ........................................................................................................................................ 9-109
9.12 AT+CGEREP........................................................................................................................................... 9-110
9.13 AT+CGREG ............................................................................................................................................ 9-111
9.14 AT+CGSMS ............................................................................................................................................ 9-112
9.15 AT+CRC .................................................................................................................................................. 9-113
9.16 AT+CR .................................................................................................................................................... 9-114
9.17 AT+CEER ................................................................................................................................................ 9-115
9.18 Extension of ATD .................................................................................................................................... 9-115
9.19 AT+SSST ................................................................................................................................................. 9-116
9.20 AT+SATT ................................................................................................................................................ 9-117
9.21 AT+SAUTOATT ..................................................................................................................................... 9-118
9.22 AT+SGPRSDATA ................................................................................................................................... 9-119 Issue 02 (2010-10-31) Spreadtrum Communications Inc. vii
A T Command User Guide
9.23 AT+CGEQREQ ....................................................................................................................................... 9-120
9.24 AT+CGEQMIN ....................................................................................................................................... 9-122
10 Special Commands ............................................................................................................ 10-124
10.1 AT+SMUX ............................................................................................................................................ 10-124
10.2 AT+S32K ............................................................................................................................................... 10-125
10.3 AT+SIND .............................................................................................................................................. 10-126
10.4 AT+SBAND .......................................................................................................................................... 10-128
10.5 AT+SSAM ............................................................................................................................................. 10-129
10.6 AT+SSAP .............................................................................................................................................. 10-130
10.7 AT+SPEAKER ...................................................................................................................................... 10-132
10.8 AT+SSEA .............................................................................................................................................. 10-133
10.9 AT+SDMUT .......................................................................................................................................... 10-135
10.10 AT+SRWD .......................................................................................................................................... 10-136
10.11 AT+SMGF ........................................................................................................................................... 10-137
10.12 AT+SMGD .......................................................................................................................................... 10-139
10.13 AT+SSMP ............................................................................................................................................ 10-140
10.14 AT+SSGF ............................................................................................................................................ 10-140
10.15 AT+SSGS ............................................................................................................................................ 10-142
10.16 AT+SNVM .......................................................................................................................................... 10-143
10.17 AT+SPLO ............................................................................................................................................ 10-145
10.18 AT+SCINF .......................................................................................................................................... 10-146
10.19 AT+SSYS ............................................................................................................................................ 10-147
10.20 AT+SPEQPARA .................................................................................................................................. 10-148
10.21 AT+SADM .......................................................................................................................................... 10-150
10.22 AT+SIME ............................................................................................................................................ 10-153
10.23 AT+SCMUX ........................................................................................................................................ 10-154
10.24 AT+PSORGMOD ................................................................................................................................ 10-154 viii Spreadtrum Communications Inc. Issue 01 (2010-10-31)
AT Command User Guide
Figures
Figure 1-1 Serial port configuration ................................................................................................................... 1-2 Figure 1-2 AT command line structure ............................................................................................................... 1-3 Figure 1-3 Return results .................................................................................................................................... 1-4 Figure 1-4 MO Call command procedure ......................................................................................................... 1-14 Figure 1-5 MT Call command procedure ......................................................................................................... 1-15 Figure 1-6 GPRS CONNECT command procedure ......................................................................................... 1-16 Figure 8-1 Interactions between STK and STK applications ........................................................................... 8-78
Issue 02 (2010-10-31) Spreadtrum Communications Inc. ix
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