Neoway N77 Commands Manual

AT Commands Manual

Issue 1.0 Date 2020-10-17

N77 AT Commands Manual

Copyright

ii

No part of this document may be reproduced or transmitted in any form or by any means without prior written

consent of Neoway Technology Co., Ltd.

is the trademark of Neoway Technology Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective

holders.

Notice

This document provides guide for users to use N77.

This document is intended for system engineers (SEs), development engineers, and test engineers.

THIS GUIDE PROVIDES INSTRUCTIONS FOR CUSTOMERS TO DESIGN THEIR APPLICATIONS.

PLEASE FOLLOW THE RULES AND PARAMETERS IN THIS GUIDE TO DESIGN AND COMMISSION.

NEOWAY WILL NOT TAKE ANY RESPONSIBILITY OF BODILY HURT OR ASSET LOSS CAUSED BY

IMPROPER OPERATIONS.

THE INFORMATION IN THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE DUE TO

PRODUCT VERSION UPDATE OR OTHER REASONS.

EVERY EFFORT HAS BEEN MADE IN PREPARATION OF THIS DOCUMENT TO ENSURE ACCURACY

OF THE CONTENTS, BUT ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS

DOCUMENT DO NOT CONSTITUTE A WARRANTY OF ANY KIND, EXPRESS OR IMPLIED.

Neoway provides customers complete technical support. If you have any question, please contact your

account manager or email to the following email addresses:

[email protected]

Website: http://www.neoway.com

 
N77 AT Commands Manual 
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Contents 
AT Syntax................................................................................................. 12 
1 Symbols ...................................................................................................................................... 12 
2 Description ................................................................................................................................. 12 
3 Command Types ........................................................................................................................ 13 
General Commands ................................................................................ 14 
1 ATI–Querying Manufacturer Information................................................................................... 14 
2 AT+CGMR–Querying Software Version ................................................................................... 14 
3 AT+CSQ–Querying Signal Quality ............................................................................................ 15 
4 AT+CREG–Querying Network Registration Status .................................................................. 16 
5 AT+CEREG–Querying EPS Network Registration Status ........................................................ 18 
6 AT+COPS–Selecting and Registering Network ........................................................................ 19 
7 AT+CIMI–Querying IMSI ........................................................................................................... 20 
8 AT+CGSN–Querying IMEI ........................................................................................................ 21 
9 AT+CCID–Obtaining the ICCID of the SIM Card ...................................................................... 22 
10 AT+CGMM–Querying Module Model ...................................................................................... 23 
11 AT+GMM–Querying Module Model ........................................................................................ 23 
12 AT+IPR–Setting Baud Rate .................................................................................................... 24 
13 AT+CFUN–Setting Module Functionality ................................................................................ 25 
14 AT+CMUX–Activating Multiplexing Mode ............................................................................... 26 
15 AT+CCLK–Clock ..................................................................................................................... 27 
16 AT+CPIN–Entering PIN Code ................................................................................................. 28 
17 AT+CLCK–Locking/Unlocking Module .................................................................................... 29 
18 AT+CPWD–Modifying Password ............................................................................................ 31 
19 AT+CGDCONT–Defining PDP Context .................................................................................. 32 
20 AT+XGAUTH–PDP Authentication ......................................................................................... 33 
21 AT+CGATT–Setting GPRS Attach and Detach ...................................................................... 34 
22 ATD*99#–GPRS Dialing Command ........................................................................................ 36 
23 AT+ENPWRSAVE–Enabling or Disabling Sleep Mode .......................................................... 36 
24 ATE1/ATE0–Enabling & Disabling Terminal Display .............................................................. 37 
25 AT+CNUM–Reading My Number ............................................................................................. 38 
26 AT&W–Saving the Setting ...................................................................................................... 39 
SMS Commands ..................................................................................... 40 
1 AT+CSMS–Selecting SMS Services ........................................................................................ 40 
2 AT+CPMS–Setting Preferred SMS Storage ............................................................................. 41 
3 AT+CMGF–Setting SMS Inputting Mode .................................................................................. 42 
4 AT+CSCS–Setting TE Character Set ....................................................................................... 43 

 
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5 AT+CNMI–Setting SMS Indication Mode .................................................................................. 44 
6 AT+CMGR–Reading SMS Messages ....................................................................................... 46 
7 AT+CMGL – SMS Message List ................................................................................................ 48 
8 AT+CMGS – Sending SMS Messages ...................................................................................... 51 
9 AT+CMGW – Writing SMS Messages ....................................................................................... 52 
10 AT+CMSS – Sending Messages from Storage ....................................................................... 53 
11 AT+CMGD – Deleting SMS Messages .................................................................................... 54 
12 AT+CSCA – Setting SMS Center Number .............................................................................. 55 
13 AT+CSMP – Setting Text Mode Parameters ........................................................................... 56 
14 AT+CSDH – Displaying the Parameters of the Text Mode ...................................................... 57 
15 AT+CSAS–Saving the Setting ................................................................................................ 59 
TCP/UDP Client Commands ................................................................... 60 
1 AT+NETAPN–Setting Network APN ......................................................................................... 60 
2 AT+XISP–Selecting Internal or External Protocol Stack .......................................................... 61 
3 AT+XIIC–Setting Up a PPP Link ............................................................................................... 61 
4 AT+TCPSETUP–Setting Up TCP Connection .......................................................................... 62 
5 AT+TCPSEND–Sending TCP Data .......................................................................................... 64 
6 AT+RECVMODE–Setting Receive Mode ................................................................................. 65 
7 AT+TCPRECV–Unsolicited TCP Data Output .......................................................................... 66 
8 +TCPREAD–Reading TCP Data .............................................................................................. 67 
9 AT+TCPCLOSE–Closing TCP Connection .............................................................................. 68 
10 AT+UDPSETUP–Setting Up UDP Connection ....................................................................... 68 
11 AT+UDPSEND–Sending UDP Data ....................................................................................... 70 
12 AT+UDPRECV–Unsolicited UDP Data Ouput ........................................................................ 71 
13 AT+UDPREAD–Reading UDP Data ....................................................................................... 72 
14 AT+UDPCLOSE–Closing UDP Connection ............................................................................ 73 
15 AT+IPSTATUS–Querying TCP/UDP Socket Status ................................................................ 74 
16 AT+TCPACK–Querying Status of Data Sent by TCP Socket ................................................. 75 
TCP Server Commands ........................................................................... 77 
1 AT+TCPLISTEN–Setting TCP Listening for the Server ............................................................ 77 
2 AT+CLOSELISTEN–Closing Socket Connection ..................................................................... 78 
3 AT+CLOSECLIENT–Closing Remote Socket ........................................................................... 79 
4 AT+TCPRECV(S)–Unsolicited TCP Data Output ..................................................................... 79 
5 AT+TCPREADS–Reading TCP Data ........................................................................................ 80 
6 AT+TCPSENDS–Sending Data to Client .................................................................................. 81 
7 AT+CLIENTSTATUS–Querying Client Connection Status ....................................................... 82 
8 AT+TCPACK–Querying Status of Data Sent by TCP Server ................................................... 83 
Transparent TCP/UDP Commands ......................................................... 85 
1 AT+TCPTRANS–Setting Up Transparent TCP Connection ..................................................... 85 
2 AT+UDPTRANS–Setting Up Transparent UDP Connection .................................................... 86 
3 AT+TCPACK–Querying Status of Data Sent by Transparent TCP Socket ............................... 87 
4 AT+IPSTATUS–Querying TCP/UDP Socket Status .................................................................. 88 
5 AT+TRANSCLOSE–Closing Transparent Socket..................................................................... 89 

 
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Transparent TCP Server Commands ...................................................... 90 
1 AT+TCPSRVTRANS–Setting Listening for Transparent TCP .................................................. 90 
2 AT+CLIENTSTATUS–Querying Socket Status of Client ........................................................... 91 
FTP Commands ...................................................................................... 93 
1 AT+FTPLOGIN–Logging in to FTP Server ............................................................................... 93 
2 AT+FTPLOGOUT–Logging Out from    FTP Server ................................................................. 94 
3 AT+FTPGET–Downloading Data from FTP Server .................................................................. 95 
4 AT+FTPPUT–Uploading Data to FTP Server ........................................................................... 97 
5 AT+FTPSTATUS–Querying FTP Link Status ............................................................................ 98 
6 AT+FILEFTPGET–Downloading Files to File System .............................................................. 99 
7 AT+FILEFTPPUT–Uploading Files in the File System ........................................................... 100 
8 +FILEFTPSTAT–Reporting the FTP Result Status of the File System .................................. 101 
HTTP/HTTPS Commands ..................................................................... 102 
1 AT+HTTPPARA–Setting HTTP Parameters ........................................................................... 102 
2 AT+HTTPSETUP–Setting Up HTTP Connection ................................................................... 103 
3 AT+HTTPACTION – Executing HTTP Request ....................................................................... 104 
4 AT+HTTPCLOSE–Closing an HTTP Socket .......................................................................... 107 
5 +HTTPRECV–Unsolicited HTTP Data Output ........................................................................ 108 
6 +HTTPCLOSED–HTTP Socket Closed .................................................................................. 109 
7 AT+FILEHTTPACTION–Sending an HTTP Request in the File System ................................... 110 
8 AT+FILEHTTPSTAT–Reporting the HTTP Result Status of the File System ............................ 111 
9 AT+HTTPSCFG–Configuring SSL Parameters for HTTPS ..................................................... 112 
10 AT+HTTPSPARA–Setting HTTPS Parameters ..................................................................... 113 
11 AT+HTTPSSETUP–Setting up HTTPS Connection .............................................................. 114 
12 AT+HTTPSACTION–Executing HTTPS Request .................................................................. 115 
13 AT+HTTPSCLOSE–Closing HTTPS Socket ......................................................................... 117 
14 AT+HTTPSRECV–Unsolicited HTTPS Data Output ............................................................. 118 
15 AT+HTTPSGET–Donwnloading HTTPS File ......................................................................... 119 
SSL TCP Data Service ........................................................................ 121 
1 AT+SSLTCPCFG–Configuring SSL Parameters for TCP ..................................................... 121 
2 AT+SSLTCPSETUP–Setting up TCP Connection over SSL ................................................ 122 
3 AT+SSLTCPCLOSE–Closing TCP Connection over SSL .................................................... 124 
4 AT+SSLTCPSEND–Sending TCP Data over SSL ................................................................ 125 
5 AT+SSLTCPRECV–Unsolicited SSLTCP Data Output ......................................................... 126 
6 AT+SSLTCPREAD–Reading SSLTCP Data ......................................................................... 126 
7 AT+CERTADD–Writing SSL Certificate ................................................................................ 127 
8 AT+CERTCHECK–Checking SSL Certificate ....................................................................... 128 
9 AT+SSLTCPCFGA–Configuring SSL Parameters for TCP .................................................. 129 
MQTT Commands ............................................................................... 131 
1 AT+MQTTTLS–Configuring TLS Parameters ....................................................................... 131 
2 AT+MQTTCONNPARAM–Setting User Parameters ............................................................ 132 
3 AT+MQTTWILLPARAM–Will Settings .................................................................................. 133 

 
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4 AT+MQTTWILLMSG–Setting Long Will Messages .............................................................. 134 
5 AT+MQTTCONN–Connection Command ............................................................................. 135 
6 AT+MQTTSUB–Subscription ................................................................................................ 135 
7 AT+MQTTUNSUB–Unsubscription ....................................................................................... 136 
8 AT+MQTTPUB–Publishing Topic .......................................................................................... 137 
9 AT+MQTTPUBS–Publishing Topic ....................................................................................... 138 
10 AT+MQTTDISCONN–Disconnecting to MQTT Server ....................................................... 139 
11 AT+MQTTSUB–Receiving Topic Content ........................................................................... 139 
12 AT+MQTTSTATE–Querying MQTT Connection Status: ..................................................... 140 
GSM Location Command .................................................................... 142 
1 AT+CIPGSMLOC–Obtaining the Location of the Module ..................................................... 142 
ADC Command .................................................................................... 144 
1 AT$MYADCTEMP–Querying Environment Temperature ..................................................... 144 
Time Synchronization Commands ....................................................... 145 
1 AT+UPDATETIME–Updating Time to Network ..................................................................... 145 
Statistics on Data Traffic ...................................................................... 148 
1 AT+FLOWCALC–Statistics on Total Data Traffic .................................................................. 148 
2 AT+RATECALC–Statistics on Transient Traffic .................................................................... 149 
File System Commands ...................................................................... 150 
1 AT+FSWF–Writing Data to File ............................................................................................. 150 
2 AT+FSRF–Reading Data from File ....................................................................................... 151 
3 AT+FSDF–Deleting a File ..................................................................................................... 152 
4 AT+FSLIST–Obtaining File List ............................................................................................ 153 
5 AT+FSFS–Obtaining the Size of a File ................................................................................. 153 
6 AT+FSLS–Obtaining the Remaining Storage Size of User Disk .......................................... 154 
7 AT+FSFAT–Formatting User Disk ......................................................................................... 155 
Network Sharing Commands ............................................................... 157 
1 AT+NETSHAREACT–Enabling Network Sharing ................................................................. 157 
Other AT Commands ........................................................................... 159 
1 AT$MYPOWEROFF–Powering Off the Module ................................................................... 159 
2 AT$MYSOCKETLED–Controlling the Indicator of Socket Status ......................................... 159 
3 AT$MYGMR–Obtaining the Version Information of the Module ........................................... 160 
4 AT$MYCCID–Obtaining the CCID of the SIM Card .............................................................. 161 
5 AT$MYNETURC–Controlling Unsolicited Report ........................................................... 162 
6 AT$MYTYPE–Querying the Type of the Module .................................................................. 163 
7 AT$MYTYPE (Chongqing)–Querying the Type of the Module ............................................. 164 
8 AT$MYMODEM (Standards for Canton)–Querying the Type of the Module ........................ 165 
9 AT$MYNETCON–Setting Initialization Parameters of Network Connections....................... 166 
10 AT$MYNETACT–Activating/Deactivating Network Connection .......................................... 167 
11 AT$MYIPFILTER–Configuring IP Access ........................................................................... 168 
12 AT$MYNETSRV–Setting Parameters for Non-transparent Transmission .......................... 169 

 
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13 AT$MYNETOPEN–Enabling TCP/UDP Service ................................................................. 170 
14 AT$MYNETREAD–Reading Received Data ....................................................................... 172 
15 AT$MYNETWRITE–Sending Data ..................................................................................... 173 
16 AT$MYNETCLOSE–Closing Socket Connection ............................................................... 173 
17 AT$MYNETACK–Querying TCPACK Information ............................................................... 174 
18 AT$MYNETACCEPT–Accepting the Listening Request ..................................................... 175 
19 AT$MYNETCREATE–Enabling Transparent Transmission Service ................................... 176 
20 AT$MYFTPOPEN–Starting FTP Service ............................................................................ 178 
21 AT$MYFTPCLOSE–Closing FTP Service .......................................................................... 179 
22 AT$MYFTPSIZE–Obtaining the FTP File Size ................................................................... 179 
23 AT$MYFTPGET–Downloading FTP Files ........................................................................... 180 
24 AT$MYFTPPUT–Uploading Files to FTP Server ................................................................ 181 
25 $MYURCREAD–Indicating Data Receiving ....................................................................... 182 
26 $MYURCCLOSE–Indicating the Disconnection ................................................................. 183 
27 $MYURCACT–Indicating Network Connection Status ....................................................... 184 
28 $MYURCCLIENT–Indicating Client Connection ................................................................. 184 
29 $MYURCFTP–Indicating FTP Disconnection ..................................................................... 185 
30 AT$MYBCCH–Locking BCCH Channel .............................................................................. 186 
31 AT$MYBAND–Locking GSM Band ..................................................................................... 188 
32 AT$MYLACID–Querying Current LAC and CELL_ID ......................................................... 188 
33 AT$MYCGED–Querying Current Channel, RX Power and TX Power ............................... 189 
34 AT$MYSYSINFO–Querying or Locking the Network Mode ............................................... 190 
35 AT$MYSYSINFOURC–Enabling/Disabling Network Mode Report .................................... 191 
36 AT$MYURCSYSINFO–Enabling/Disabling Network Mode Report .................................... 192 
37 $MYURCSYSINFO–Enabling/Disabling Network Mode Report ........................................ 193 
38 AT$MYNETINFO (Standards for Canton)–Setting Network Mode Choices ....................... 194 
39 AT$MYNETAUTO–Enabling/Disabling the Default AUTO Network Modes during Startup 195 
40 AT^SYSCONFIG–Setting Network Mode Choices ............................................................. 196 
41 AT^SYSINFO–Obtaining System Information .................................................................... 197 
42 AT$MYTIMEUPDATE–Network Time Update .................................................................... 199 
43 AT+NRSP–Querying RSRP, RSRQ, SINR of Cells in a Neighbor of a Serving Cell on LTE 
Network .......................................................................................................................................... 201 
44 AT$MYANTAUX–Controlling Divergent Antenna ................................................................ 201 
45 AT+NETMSG–Querying Network Registration Information ................................................ 202 
46 AT+NETMSG–Querying Network Registration Information ................................................ 204 
47 AT+NETDMSG–Querying Network Registration Information ............................................. 206 
48 AT+NEOFOTA–FOTA Command ....................................................................................... 209 
49 AT+MYDATAONLY–Disabling CS Services ......................................................................... 211 
50 AT+BANDLOCK–Locking to Band ....................................................................................... 211 
51 AT$MYUSBNETADDR–Setting RNDIS Gateway ............................................................... 213 
52 AT+SIMSTATUS–Obtaining Key Parameters of the SIM Card .......................................... 214 
53 AT$MYNETDTS–Collecting Traffic Statistics...................................................................... 214 
54 AT+DNSSERVER–Setting the DNS Server ....................................................................... 216 

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18.55 AT+USBSTATE–Controlling the USB Status Unsolicited Report ....................................... 217

18.56 +USBSTATEURC–Reporting USB Connection Status ...................................................... 218

18.57 AT+READADC–Reading ADC Value .................................................................................. 218

Error code .............................................................................................. 220

Reference Process of AT Command Programming .............................. 221

B.1 Content of PDU SMS Messages ............................................................................................. 221

B.2 Flowchart of Sending Text SMS Messages (Through UART) ................................................. 223

B.3 Flowchart of Sending PDU SMS Messages (Through UART) ................................................ 224

Support Band List ................................................................................. 225

C.1 GSM Bands ............................................................................................................................. 225

C.2 LTE Bands ............................................................................................................................... 225

N77 AT Commands Manual

About This Document

ix

About This Document

Scope

This document is applicable to N77.

Audience

This document is intended for system engineers (SEs), development engineers, and test engineers.

Change History

Issue

Date

Change

Changed By

1.0

2020-9

Initial draft

Song Haiqing

N77 AT Commands Manual

About This Document

x

Conventions

Symbol

Indication

This warning symbol means danger. You are in a situation that could cause fatal

device damage or even bodily damage.

Means reader be careful. In this situation, you might perform an action that could

result in module or product damages.

Means note or tips for readers to use the module

Related Documents

Neoway_N77_Datasheet

Neoway_N77_Product_Specifications

Neoway_N77_HW_User_Guide

Neoway_N77_EVK_User_Guide

N77 AT Commands Manual

Boot LOG Instruction

11

Boot LOG Instruction

The UART outputs +PBREADY after the phonebook is available.

If the module is booted in automatic baudrate detection mode, send AT 10 seconds after the module

is powered up to check if the AT function is initialized. The UART responds with OK if AT is initialized

and outputs +PBREADY after the phonebook is available.

Network indicator status

⚫ Off: No network found.

⚫ On: the module finds a network and the PDP context is not activated.

⚫ Blinks (on for 0.2 seconds and off for 1.8 seconds): the PDP context is activated successfully.

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Chapter 1 AT Syntax

12

1 AT Syntax

1.1 Symbols

⚫ <CR>: carriage return character

⚫ <LF>: linefeed character

⚫ <..>: parameter name, the angle brackets do not appear in the command line.

⚫ [..]: optional parameter, the square brackets do not appear in the command line.

⚫ : space

1.2 Description

Prefix

AT or at

Command Line

Standard commands, in compliance with 3GPP 27007, 27005and ITU-T Recommendation V.250.

Extended commands, defined by Neoway

Joint Mark

+ or $, used between the prefix and a command line

Termination Character

<CR>, i.e. 0x0D

Response Syntax

<CR><LF>response<CR><LF>

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Chapter 1 AT Syntax

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Response can be one or multiple messages.

Result Syntax

<CR><LF>OK<CR><LF> indicates that a command is executed successfully.

<CR><LF>ERROR<CR><LF> indicates that a command fails to be executed.

For the error codes, see Appendix A.

1.3 Command Types

Type

Syntax

Response

Function

Set

AT+CMD=<VALUE><CR>

Or

<CR><LF>ERROR<CR><LF>

Store a value or

values for later use

Execute

AT+CMD[=<VALUE>]<CR>

[<CR><LF>response]

Or

<CR><LF>ERROR<CR><LF>

Invoke a function of

the module.

Test

AT+CMD=?<CR>

[<CR><LF>response]

Determine the range

of parameter values

or parameter lengths

that are supported

Query

AT+CMD?<CR>

[<CR><LF>response]

Determine the current

value or values stored

Unsolicited

report

<CR><LF>+CMD:

N/A

Report the status

change and data

receiving

Remarks

Symbols are not displayed in AT commands. All commands comply with the rules in

this chapter.

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Chapter 2 General Commands

14

2 General Commands

2.1 ATI–Querying Manufacturer Information

To query the manufacturer information, including manufacturer, model, and version

Format

Type

Command

Response

Execute

ATI<CR>

Timeout

The command times out if the module does not respond in 300 ms.

Parameter

<module_info>

module manufacturer information

Example

ATI

NEOWAY

N77

REVISION V001

OK

Manufacturer

Module model

Version

2.2 AT+CGMR–Querying Software Version

To query the software version

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Chapter 2 General Commands

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Format

Type

Command

Response

Execute

AT+GMR<CR>

Timeout

The command times out if the module does not respond in 300 ms.

Parameter

software version

Example

AT+GMR

+GMR: N77_BZ-NWY-001

OK

Query the software version

2.3 AT+CSQ–Querying Signal Quality

To query the receiving signal strength indication (RSSI) and bit error rate (BER) of the channel.

Format

Type

Command

Response

Execute

AT+CSQ<CR>

Timeout

The command times out if the module does not respond in 300ms.

Parameter

The following table shows the relationship between the CSQ and the RSSI.

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Chapter 2 General Commands

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signal

Rssi

0

<4 or 99

<-107 dBm or unknown

1

<10

<-93dBm

2

<16

<-71 dBm

3

<22

<-69 dBm

4

<28

<-57 dBm

5

>=28

>=-57 dBm

<ber>

0...7

Refer to the value of RXQUAL in the table of GSM 05.08 8.2.4.

99

Not known or not detectable

Example

AT+CSQ

+CSQ: 19,2

OK

Query the strength of the current signal.

2.4 AT+CREG–Querying Network Registration Status

To query the network registration status of the module

Format

Type

Command

Response

Execute

AT+CREG=[<n>]<CR>

Or

<CR><LF>ERROR<CR><LF>

Or

Query

AT+CREG?<CR>

<CR><LF>+CREG:

Test

AT+CREG=?<CR>

<CR><LF>+CREG: (list of supported <n>s)

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Chapter 2 General Commands

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Timeout

The command times out if the module does not respond in 300ms.

Parameter

<n>

Specifies whether to enable unsolicited result codes for network registration.

0: disable network registration unsolicited result code (default).

1: enable network registration unsolicited result code +CREG: <stat>.

2: enable network registration unsolicited result code with location information (Cell ID,

Local ID) +CREG: <stat>[,[<lac>],[<ci>],[<AcT>]]

<stat>

Network registration status

0: not registered, the module is not currently searching for an operator to register to

1: registered with a home network

2: not registered, but the module is currently trying to attach or searching for an operator to

register to

3: registration denied

4. unknown code

5: registered, roaming

<lac>

Two-byte location area code in hexadecimal format, string type

<ci>

Four-byte cell ID in hexadecimal format, string type

<Act>

The access technology of the serving cell, integer type

0: GSM

1: GSM compact

2: UTRAN

3: GSM w/EGPRS

4: UTRAN w/HSDPA

5: UTRAN w/HSUPA

6: UTRAN w/HSDPA and w/HSUPA

7: E-UTRAN

Example

AT+CREG?

+CREG: 0,1

OK

Query the network registration status of the

module

The module is registered with a home network

AT+CREG=1

OK

Enable network registration unsolicited codes.

AT+CREG=?

+CREG: (0-2)

OK

Query the value range of the network

registration status parameter.

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Chapter 2 General Commands

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2.5 AT+CEREG–Querying EPS Network Registration

Status

To query the EPS network registration status of the module

Format

Type

Command

Response

Execute

AT+CEREG=<n><CR>

Query

AT+CEREG?<CR>

<CR><LF>+CEREG:

<stat>[,[<tac>],[<ci>],[<AcT>][,,[,[<Active-

Time>],[<Periodic-TAU>]]]]

Test

AT+CEREG=?<CR>

<CR><LF>+CEREG: (list of supported<n>s)

Timeout

The command times out if the module does not respond in 300ms.

Parameter

<n>

Specifies whether to enable network registration unsolicited result code.

0: disable network registration unsolicited result code (default).

1: enable network registration unsolicited result code.

2: enable network registration and location information (Cell ID, Local ID) unsolicited

result code

<stat>

Network status

0: not registered, the module is not currently searching for a new operator to register

1: registered to the home network

2: not registered, but the module is currently trying to searching for a base station

3: registration denied

4. Unknown code

5: registered, roaming

<lac>

Two-byte tracking area code in hexadecimal format, string type

<ci>

Four-byte cell ID in hexadecimal format, string type

<Act>

the access technology of the serving cell, integer type

0: GSM

1: GSM compact

2: UTRAN

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3: GSM w/EGPRS

4: UTRAN w/HSDPA

5: UTRAN w/HSUPA

6: UTRAN w/HSDPA and HSUPA

7: E-UTRAN

Example

AT+CEREG?

+CEREG: 0,1

OK

Query the network registration status of the module.

AT+CEREG=1

OK

Enable network registration unsolicited code.

AT+CEREG=?

+CEREG: (0-2)

OK

Query the value range of the network registration status

parameter.

2.6 AT+COPS–Selecting and Registering Network

To select and register a network.

Format

Type

Command

Response

Execute

AT+COPS=[<mode>[,<format>[,<oper>

>[,<AcT>]]]]<CR>

Query

AT+COPS?<CR>

<CR><LF>+COPS:<mode>[,<format>,<op

er>[,<AcT>]]

Test

AT+COPS=?<CR>

<CR><LF>+COPS: [list of supported

(<stat>,long alphanumeric <oper>,short

alphanumeric <oper>,numeric

<oper>[,<AcT>])s][,,(list of

supported<mode>s),(list of supported

Timeout

The command times out if the module does not respond in 300 ms.

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Chapter 2 General Commands

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Parameter

<mode>

To set automatic network selection or manual selection:

0: Automatic selection (ignore the parameter <per>)

1: Manual selection

2: Deregister from the network

3: Set <format>only

4: Manual/automatic selection (if the manual selection fails, automatic mode starts)

0: Long alphanumeric <oper> (default value)

1: Short format alphanumeric <oper>

2: Numeric <oper>

<oper>

It is given in <format>. This field may be in 16-character long alphanumeric format, 8-

characters short alphanumeric format, or 5-character numeric format (MCC/MNC).

<AcT>

indicates the radio access technology and its value can be 0, 1, and 2.

0: GSM

1: GSM compact

2: UTRAN

3: GSM w/EGPRS

4: UTRAN w/HSDPA

5: UTRAN w/HSUPA

6: UTRAN w/HSDPA and HSUPA

7: E-UTRAN

Example

AT+COPS=0,0

OK

Automatic network selection is enabled. Long alphanumeric

mode.

AT+COPS=0,2

OK

Set to digital mode

AT+COPS?

+COPS: 0,0,"CHINAMOBILE",7

OK

China Mobile

AT+COPS?

+COPS: 0,2,"46000",7

OK

If it is set to digital mode, get the number 46000

AT+COPS?

+COPS: 0,0,"CHINAUNICOM",7

OK

China Unicom

AT+COPS?

+COPS: 0,2,"46001",7

OK

If it is set to digital mode, then get the number 46001.

AT+COPS=2

OK

Deregister the network.

2.7 AT+CIMI–Querying IMSI

To query the international mobile subscriber identification (IMSI).

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Neoway N77 Commands Manual

Neoway N77 Commands Manual

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