Quectel EC25, EC21 Command Manual

EC25&EC21

AT Commands Manual

LTE Module Series

Rev. EC25&EC21_AT_Commands_Manual_V1.2 Date: 2017-11-14 Status: Released

www.quectel.com

LTE Module Series

EC25&EC21 AT Commands Manual

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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 WIRELESS SOLUTIONS 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.

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Revision

Date

Author

Description

1.0

2016-05-30

James CAI/ Bonnie ZHAO

Initial

1.1

2017-01-18

Ivan ZHANG/ Sophie ZHU

1. Added the following AT commands: +QRIR/+QINDCFG/+QINISTAT/+QLTS/+QSPN/ +QHUP/+QEEC/+QSIDET/+QMIC/+QRXGAIN/ +QIIC/+QADC

2. Added AT+QCFG commands shown as below: "urc/ri/ring"/"urc/ri/smsincoming"/"urc/ri/other"/"risig naltype"/"urc/delay"/"urc/cache"

3. Updated the description for <Act> parameter in AT+COPS command: added the value 100 which indicates CDMA network

1.2

2017-11-14

Jessica GENG

1. Added commands AT+QTONEDET, AT+QLDTMF, AT+QLTONE and AT+QCFG=“tone/incoming”

2. Updated the description of parameter <ci> in commands AT+CREG, AT+CGREG and AT+CEREG

3. Deleted command AT+QCFG="tdscsq" and the description of +QURCCFG? in command AT+QURCCFG

4. Updated the description of commands AT+QUCCFG, AT+CTZU, AT+QDAI, AT+QEEC, AT+QIIC and AT+QCFG="band"

5. Updated the examples of commands AT+QIIC and AT+COPS

6. Deleted some related information about CDMA

7. Updated the supported baud rates of command AT+IPR

EC25&EC21 AT Commands Manual

About the Document

History

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EC25&EC21 AT Commands Manual

Table Index

TABLE 1: TYPES OF AT COMMANDS AND RESPONSES ............................................................................. 10

TABLE 2: AT&V RESPONSE ............................................................................................................................. 18

TABLE 3: ATV0&ATV1 RESULT CODES NUMERIC EQUIVALENTS AND BRIEF DESCRIPTION ................ 21

TABLE 4: PARAMETER CONFIGURATIONS SUPPORTED BY AT+CBST ................................................... 100

TABLE 5: DELAY CLASS ................................................................................................................................ 151

TABLE 6: RELATED DOCUMENTS ................................................................................................................ 208

TABLE 7: TERMS AND ABBREVIATIONS ...................................................................................................... 208

TABLE 8: FACTORY DEFAULT SETTINGS RESTORABLE WITH AT&F ...................................................... 209

TABLE 9: AT COMMAND SETTINGS STORABLE WITH AT&W ..................................................................... 211

TABLE 10: AT COMMAND SETTINGS STORABLE WITH ATZ ..................................................................... 212

TABLE 11: DIFFERENT CODING SCHEMES OF +CME ERROR: <ERR> ................................................... 213

TABLE 12: DIFFERENT CODING SCHEMES OF +CMS ERROR: <ERR> ................................................... 215

TABLE 13: SUMMARY OF URC ..................................................................................................................... 216

TABLE 14: THE WAY OF SMS TEXT INPUT OR OUTPUT ............................................................................ 219

TABLE 15: THE INPUT CONVERSIONS TABLE (DCS=GSM 7 BIT AND AT+CSCS=“GSM”) ...................... 219

TABLE 16: THE OUTPUT CONVERSIONS TABLE (DCS=GSM 7 BIT AND AT+CSCS=“GSM”) .................. 220

TABLE 17: GSM EXTENDED CHARACTERS ................................................................................................ 221

TABLE 18: THE INPUT CONVERSIONS TABLE (DCS=GSM 7 BIT AND AT+CSCS=“IRA”) ........................ 221

TABLE 19: IRA EXTENDED CHARACTERS .................................................................................................. 222

TABLE 20: THE OUTPUT CONVERSIONS TABLE (DCS=GSM 7 BIT AND AT+CSCS=“IRA”) .................... 223

TABLE 21: GSM EXTENDED CHARACTERS ................................................................................................ 224

TABLE 22: RELEASE CAUSE TEXT LIST OF AT+CEER .............................................................................. 225

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EC25&EC21 AT Commands Manual

1 Introduction

1.1. Scope of the Document

This document presents the AT Commands Set for Quectel cellular engines EC25 & EC21.

1.2. AT Command Syntax

The “AT” or “at” prefix must be set at the beginning of each command line. To terminate a command line enter <CR>. Commands are usually followed by a response that includes

“<CR><LF><response><CR><LF>”. Throughout this document, only the responses are presented, “<CR><LF>” are omitted intentionally.

The AT Commands Set implemented by EC25 & EC21 is a combination of 3GPP TS 27.007, 3GPP TS

27.005 and ITU-T recommendation V.25ter as well as the AT Commands developed by Quectel.

All these AT commands can be split into three categories syntactically: “basic”, “S parameter”, and “extended”. They are listed as follows:

 Basic syntax These AT commands have the format of “AT<x><n>”, or “AT&<x><n>”, where “<x>” is the command, and

“<n>” is/are the argument(s) for that command. An example of this is “ATE<n>”, which tells the DCE

whether received characters should be echoed back to the DTE according to the value of “<n>”. “<n>” is optional and a default will be used if it is missing.

 S parameter syntax These AT commands have the format of “ATS<n>=<m>”, where “<n>” is the index of the S register to set, and “<m>” is the value to assign to it.

 Extended syntax These commands can be operated in several modes, as following table:

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Test Command

AT+<x>=?

This command returns the list of parameters and value ranges set by the corresponding Write Command or internal processes.

Read Command

AT+<x>?

This command returns the currently set value of the parameter or parameters.

Write Command

AT+<x>=<…>

This command sets the user-definable parameter values.

Execution Command

AT+<x>

This command reads non-variable parameters affected by internal processes in the UE.

EC25&EC21 AT Commands Manual

Table 1: Types of AT Commands and Responses

1.3. Supported Character Sets

EC25 & EC21 AT command interface defaults to the GSM character set. EC25 & EC21 modules support the following character sets:

 GSM format  UCS2  IRA

The character set can be configured and interrogated by using the AT+CSCS command (3GPP TS

27.007) and it is defined in 3GPP TS 27.005. The character set affects transmission and reception of SMS

and SMS Cell Broadcast Messages, as well as the entry and display of phone book entries text field.

1.4. AT Command Interface

EC25 & EC21 AT command interface includes two USB ports (USB MODEM port and USB AT port) and one main UART port. The main UART port and two USB ports support AT command communication and data transfer.

1.5. Unsolicited Result Code

As an Unsolicited Result Code and a report message, URC is not issued as part of the response related to an executed AT command. URC is issued by the EC25 & EC21 without being requested by the TE and it is issued automatically when a certain event occurs. Typical events leading to URCs are incoming calls (RING), received short messages, high/low voltage alarm, high/low temperature alarm, etc.

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EC25&EC21 AT Commands Manual

1.6. Turn off Procedure

It is recommended to execute AT+QPOWD command to turn off the module, as it is the safest and best way. This procedure is realized by letting the module log off from the network and allowing the software to enter into a secure and safe data state before disconnecting the power supply.

After sending AT+QPOWD, do not enter any other AT commands. The module outputs message, POWERED DOWN and sets the STATUS pin as low to enter into the shutdown state. In order to avoid data loss, it is suggested to wait for 1s to switch off the VBAT after the STATUS pin is set as low and the URC POWERED DOWN is outputted. If POWERED DOWN has not been received after 65s, the VBAT shall be switched off compulsorily.

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ATI Display Product Identification Information

Execution Command

ATI

Response TA issues product information text.

Quectel EC2x Revision: <revision>

OK

Maximum Response Time

300ms

Reference V.25ter

<revision> Identification text of product software version

EC25&EC21 AT Commands Manual

2 General Commands

2.1. ATI Display Product Identification Information

The command delivers a product information text.

Parameter

Example

ATI

Quectel EC25 Revision: EC25EFAR02A09M4G

OK

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AT+GMI Request Manufacturer Identification

Test Command

AT+GMI=?

Response

OK

Execution Command AT+GMI

Response TA reports one or more lines of information text which permit the user to identify the manufacturer.

Quectel

OK

Maximum Response Time

300ms

Reference V.25ter

AT+GMM Request TA Model Identification

Test Command

AT+GMM=?

Response

OK

Execution Command AT+GMM

Response TA returns a product model identification text.

EC2x

OK

Maximum Response Time

300ms

Reference V.25ter

EC25&EC21 AT Commands Manual

2.2. AT+GMI Request Manufacturer Identification

The command returns a manufacturer identification text. See also AT+CGMI.

2.3. AT+GMM Request TA Model Identification

The command returns a product model identification text. It is identical with AT+CGMM.

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AT+GMR Request TA Revision Identification of Software Release

Test Command

AT+GMR=?

Response

OK

Execution Command AT+GMR

Response TA reports one or more lines of information text which permit the user to identify the revision of software release.

OK

Maximum Response Time

300ms

Reference V.25ter

<revision> Identification text of product software version

AT+CGMI Request Manufacturer Identification

Test Command

AT+CGMI=?

Response

OK

Execution Command AT+CGMI

Response TA returns manufacturer identification text.

Quectel

EC25&EC21 AT Commands Manual

2.4. AT+GMR Request TA Revision Identification of Software Release

The command delivers a product firmware version identification text. It is identical with AT+CGMR.

Parameter

Example

AT+GMR

EC25EFAR02A09M4G

OK

2.5. AT+CGMI Request Manufacturer Identification

The command returns a manufacturer identification text. See also AT+GMI.

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OK

Maximum Response Time

300ms

Reference 3GPP TS 27.007

AT+CGMM Request Model Identification

Test Command

AT+CGMM=?

Response

OK

Execution Command AT+CGMM

Response TA returns product model identification text.

EC2x

OK

Maximum Response Time

300ms

Reference 3GPP TS 27.007

AT+CGMR Request TA Revision Identification of Software Release

Test Command

AT+CGMR=?

Response

OK

Execution Command AT+CGMR

Response TA returns identification text of product software version.

OK

Maximum Response Time

300ms

Reference 3GPP TS 27.007

EC25&EC21 AT Commands Manual

2.6. AT+CGMM Request Model Identification

The command returns a product model identification text. It is identical with AT+GMM.

2.7. AT+CGMR Request TA Revision Identification of Software Release

The command delivers a product firmware version identification text. It is identical with AT+GMR.

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The serial number (IMEI) varies with the individual ME device.

<revision> Identification text of product software version

AT+GSN Request International Mobile Equipment Identity (IMEI)

Test Command

AT+GSN=?

Response

OK

Execution Command AT+GSN

Response TA reports the IMEI (International Mobile Equipment Identity) number in information text which permits the user to identify the individual ME device.

<IMEI>

OK

Maximum Response Time

300ms

Reference V.25ter

<IMEI> IMEI of the ME

NOTE

EC25&EC21 AT Commands Manual

Parameter

2.8. AT+GSN Request International Mobile Equipment Identity (IMEI)

The command returns the International Mobile Equipment Identity (IMEI) number of ME. It is identical with

AT+CGSN.

Parameter

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The serial number (IMEI) varies with the individual ME device.

AT+CGSN Request Product Serial Number Identification

Test Command

AT+CGSN=?

Response

OK

Execution Command AT+CGSN

Response

<IMEI>

OK

Maximum Response Time

300ms

Reference 3GPP TS 27.007

<IMEI> IMEI of the ME

AT&F Set all Current Parameters to Manufacturer Defaults

Execution Command AT&F[<value>]

Response TA sets all current parameters to the manufacturer defined profile. See Table 8. OK

Maximum Response Time

300ms

Reference V.25ter

NOTE

EC25&EC21 AT Commands Manual

2.9. AT+CGSN Request Product Serial Number Identification

The command returns International Mobile Equipment Identity (IMEI) number of ME. It is identical with

AT+GSN.

Parameter

2.10. AT&F Set all Current Parameters to Manufacturer Defaults

The command resets AT command settings to their factory default values.

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<value> 0 Set all TA parameters to manufacturer defaults

AT&V Display Current Configuration

Execution Command AT&V

Response TA returns the current parameter settings. See Table 2. OK

Maximum Response Time

300ms

Reference V.25ter

AT&V

&C: 1 &D: 2 &F: 0 &W: 0 E: 1 Q: 0 V: 1 X: 4 Z: 0 S0: 0 S3: 13 S4: 10 S5: 8 S6: 2 S7: 0 S8: 2 S10: 15

OK

EC25&EC21 AT Commands Manual

Parameter

2.11. AT&V Display Current Configuration

The command displays the current settings of several AT command parameters, including the single-letter AT command parameters which are not readable otherwise.

Table 2: AT&V Response

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AT&W Store Current Parameters to User Defined Profile

Execution Command AT&W[<n>]

Response TA stores the current parameter settings in the user defined profile. See Table 9. OK

Maximum Response Time

300ms

Reference V.25ter

<n> 0 Profile number to store current parameters

ATZ Set all Current Parameters to User Defined Profile

Execution Command ATZ[<value>]

Response TA sets all current parameters to the user defined profile. See Table 10. OK

Maximum Response Time

300ms

Reference V.25ter

<value> 0 Reset to profile number 0

EC25&EC21 AT Commands Manual

2.12. AT&W Store Current Parameters to User Defined Profile

The command stores the current AT command settings to a user defined profile in non-volatile memory.

Parameter

2.13. ATZ Set all Current Parameters to User Defined Profile

The command restores the current AT command settings to the user defined profile in non-volatile memory, if one was stored with AT&W before. Any additional AT command on the same command line may be ignored.

Parameter

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ATQ Set Result Code Presentation Mode

Execution Command ATQ<n>

Response This parameter setting determines whether or not the TA transmits any result code to the TE. Information text transmitted in response is not affected by this setting. If <n>=0:

OK

If <n>=1: (none)

Maximum Response Time

300ms

Reference V.25ter

<n> 0 TA transmits result code 1 Result codes are suppressed and not transmitted

ATV TA Response Format

Execution Command ATV<value>

Response This parameter setting determines the contents of the header and trailer transmitted with result codes and information responses. When <value>=0

0 When <value>=1 OK

EC25&EC21 AT Commands Manual

2.14. ATQ Set Result Code Presentation Mode

The command controls whether the result code is transmitted to the TE. Other information text transmitted as response is not affected.

Parameter

2.15. ATV TA Response Format

The command determines the contents of header and trailer transmitted with AT command result codes and information responses.

The result codes, their numeric equivalents and brief descriptions of the use of each are listed in the following table.

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Maximum Response Time

300ms

Reference V.25ter

<value> 0 Information response: <text><CR><LF> Short result code format: <numeric code><CR>

1 Information response: <CR><LF><text><CR><LF>

Long result code format: <CR><LF><verbose code><CR><LF>

ATV1

ATV0

Description

OK 0 Acknowledges execution of a command

CONNECT

1

A connection has been established; the DCE is moving from command mode to data mode

RING

2

The DCE has detected an incoming call signal from network

NO CARRIER

3

The connection has been terminated or the attempt to establish a connection failed

ERROR

4

Command not recognized, command line maximum length exceeded, parameter value invalid, or other problem with processing the command line

NO DIALTONE

6

No dial tone detected

EC25&EC21 AT Commands Manual

Parameter

Example

ATV1 //Set <value>=1

OK

AT+CSQ

+CSQ: 30,99

OK //When <value>=1, the result code is OK.

ATV0 //Set <value>=0

0

AT+CSQ

+CSQ: 30,99 0 //When <value>=0, the result code is 0.

Table 3: ATV0&ATV1 Result Codes Numeric Equivalents and Brief Description

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BUSY

7

Engaged (busy) signal detected

NO ANSWER

8

“@” (Wait for Quiet Answer) dial modifier was used, but

remote ringing followed by five seconds of silence was not detected before expiration of the connection timer (S7)

ATE Set Command Echo Mode

Execution Command

ATE<value>

Response This setting determines whether or not the TA echoes characters received from TE during command state.

OK

Maximum Response Time

300ms

Reference V.25ter

<value> 0 Echo mode OFF 1 Echo mode ON

A/ Repeat Previous Command Line

Execution Command

A/

Response Repeat the previous command

Reference V.25ter

EC25&EC21 AT Commands Manual

2.16. ATE Set Command Echo Mode

The command controls whether or not the module echoes characters received from TE during AT command mode.

Parameter

2.17. A/ Repeat Previous Command Line

The command repeats previous AT command line, and “/” acts as the line terminating character.

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ATS3 Set Command Line Termination Character

Read Command

ATS3?

Response

<n>

OK

Write Command

ATS3=<n>

Response This parameter setting determines the character recognized by TA to terminate an incoming command line. The TA also returns this character in output.

OK

Maximum Response Time

300ms

Reference V.25ter

<n> 0-13-127 Command line termination character (Default 13=<CR>)

EC25&EC21 AT Commands Manual

Example

ATI

Quectel EC25 Revision: EC25EFAR02A09M4G

OK

A/ //Repeat the previous command

Quectel EC25 Revision: EC25EFAR02A09M4G

OK

2.18. ATS3 Set Command Line Termination Character

The command determines the character recognized by the module to terminate an incoming command line. It is also generated for result codes and information text, along with character value set via ATS4.

Parameter

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ATS4 Set Response Formatting Character

Read Command

ATS4?

Response

<n>

OK

Write Command

ATS4=<n>

Response This parameter setting determines the character generated by the TA for result code and information text.

OK

Maximum Response Time

300ms

Reference V.25ter

<n> 0-10-127 Response formatting character (Default 10=<LF>)

ATS5 Set Command Line Editing Character

Read Command

ATS5?

Response

<n>

OK

Write Command

ATS5=<n>

Response This parameter setting determines the character recognized by TA as a request to delete the immediately preceding character from the command line.

OK

Maximum Response Time

300ms

EC25&EC21 AT Commands Manual

2.19. ATS4 Set Response Formatting Character

The command determines the character generated by the module for result code and information text, along with the command line termination character set via ATS3.

Parameter

2.20. ATS5 Set Command Line Editing Character

The command determines the character value used by the module to delete the immediately preceding character from the AT command line (i.e. equates to backspace key).

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Reference V.25ter

<n> 0-8-127 Response editing character (Default 8=<Backspace>)

ATX Set CONNECT Result Code Format and Monitor Call Progress

Execution Command ATX<value>

Response This parameter setting determines whether or not the TA detected the presence of dial tone and busy signal and whether or not TA transmits particular result codes. OK

Maximum Response Time

300ms

Reference V.25ter

<value> 0 CONNECT result code only returned, dial tone and busy detection are both

disabled

1 CONNECT <text> result code only returned, dial tone and busy detection are

both disabled

2 CONNECT <text> result code returned, dial tone detection is enabled, busy

detection is disabled

3 CONNECT <text> result code returned, dial tone detection is disabled, busy

detection is enabled

4 CONNECT <text> result code returned, dial tone and busy detection are

both enabled

EC25&EC21 AT Commands Manual

Parameter

2.21. ATX Set CONNECT Result Code Format and Monitor Call Progress

The command determines whether or not the module transmits particular result codes to the TE. It also controls whether or not the module verifies the presence of a dial tone when it begins dialing, and whether or not engaged tone (busy signal) detection is enabled.

Parameter

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AT+CFUN Set Phone Functionality

Test Command

AT+CFUN=?

Response

+CFUN: (list of supported <fun>s),(list of supported <rst>s)

OK

Read Command AT+CFUN?

Response

+CFUN: <fun>

OK

Write Command AT+CFUN=<fun>[,<rst>]

Response

OK

If there is any error related to ME functionality: +CME ERROR: <err>

Maximum Response Time

15s, determined by network.

Reference 3GPP TS 27.007

<fun> 0 Minimum functionality

1 Full functionality (Default) 4 Disable the ME from both transmitting and receiving RF signals

<rst> 0 Do not reset the ME before setting it to <fun> functionality level.

This is the default setting when <rst> is not given.

1 Reset the ME. The device is fully functional after the reset. This value is available

only for <fun>=1

EC25&EC21 AT Commands Manual

2.22. AT+CFUN Set Phone Functionality

The command controls the functionality level. It can also be used to reset the UE.

Parameter

Example

AT+CFUN=0 //Switch phone to minimum functionality

OK

AT+COPS?

+COPS: 0 //No operator is registered

OK

AT+CPIN?

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AT+CMEE Error Message Format

Test Command AT+CMEE=?

Response

+CMEE: (list of supported <n>s)

OK

Read Command

AT+CMEE?

Response

+CMEE: <n>

OK

Write Command

AT+CMEE=<n>

Response TA disables or enables the use of result code +CME ERROR: <err> as an indication of an error related to the functionality of the ME.

EC25&EC21 AT Commands Manual

+CME ERROR: 13 //(U)SIM failure

AT+CFUN=1 //Switch phone to full functionality

OK

+CPIN: SIM PIN

AT+CPIN=1234

OK

+CPIN: READY

+QUSIM: 1

+QIND: PB DONE

+QIND: SMS DONE

AT+CPIN?

+CPIN: READY

OK

AT+COPS?

+COPS: 0,0,"CHINA MOBILE",7 //Operator is registered

OK

2.23. AT+CMEE Error Message Format

The command controls the format of error result codes: ERROR, error numbers or verbose messages as +CME ERROR: <err> and +CMS ERROR: <err>.

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<n> 0 Disable result code 1 Enable result code and use numeric values

2 Enable result code and use verbose values

OK Maximum Response Time

300ms

Reference 3GPP TS 27.007

AT+CSCS Select TE Character Set

Test Command AT+CSCS=?

Response

+CSCS: (list of supported <chset>s)

OK

Read Command

AT+CSCS?

Response

+CSCS: <chset>

EC25&EC21 AT Commands Manual

Parameter

Example

AT+CMEE=0 //Disable result code

OK

AT+CPIN?

ERROR //Only ERROR will be displayed

AT+CMEE=1 //Enable error result code with numeric values

OK

AT+CPIN?

+CME ERROR: 10

AT+CMEE=2 //Enable error result code with verbose (string)

values

OK

AT+CPIN?

+CME ERROR: SIM not inserted

2.24. AT+CSCS Select TE Character Set

The Write Command informs the module which character set is used by the TE. This enables the UE to convert character strings correctly between TE and UE character sets.

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OK

Write Command

AT+CSCS=<chset>

Response Set character set <chset> which is used by the TE. The TA can then convert character strings correctly between the TE and ME character sets. OK

Maximum Response Time

300ms

Reference 3GPP TS 27.007

<chset> “GSM” GSM default alphabet “IRA” International reference alphabet “UCS2” UCS2 alphabet

AT+QURCCFG Configure URC Indication Option

Test Command

AT+QURCCFG=?

Response

+QURCCFG: "urcport",("usbat","usbmodem","uart1")

OK

Write Command

AT+QURCCFG="urcport"[,<urcportv

If the configuration parameter <urcportvalue> is omitted, return current configuration:

EC25&EC21 AT Commands Manual

Parameter

Example

AT+CSCS? //Query the current character set

+CSCS: “GSM”

OK

AT+CSCS=“UCS2” //Set the character set to “UCS2”

OK

AT+CSCS?

+CSCS: “UCS2”

OK

2.25. AT+QURCCFG Configure URC Indication Option

The command is used to configure the output port of URC.

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1. Configuration of URC output port will be saved to NV immediately by default.

2. After configuration of URC output port is set successfully, it will take effect immediately.

alue>]

+QURCCFG: "urcport",<urcportvalue>

OK

If the configuration parameter <urcportvalue> is not omitted, response:

OK ERROR

Maximum Response Time

300ms

<urcportvalue> Set URC output port "usbat" USB AT port "usbmodem" USB modem port

"uart1" Main UART

NOTES

EC25&EC21 AT Commands Manual

Parameter

Example

AT+QURCCFG=?

+QURCCFG: "urcport",("usbat","usbmodem","uart1")

OK

AT+QURCCFG="urcport"

+QURCCFG: "urcport","usbat"

OK

AT+QURCCFG="urcport","usbmodem"

OK

AT+QURCCFG="urcport"

+QURCCFG: "urcport","usbmodem"

OK

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AT&C Set DCD Function Mode

Execution Command

AT&C[<value>]

Response This parameter determines how the state of circuit 109(DCD) relates to the detection of received line signal from the distant end. OK

Maximum Response Time

300ms

Reference V.25ter

<value> 0 DCD line is always ON

1 DCD line is ON only in the presence of data carrier

AT&D Set DTR Function Mode

Execution Command

AT&D[<value>]

Response This parameter determines how the TA responds when circuit 108/2 (DTR) is changed from low to high level during data mode. OK

Maximum Response Time

300ms

EC25&EC21 AT Commands Manual

3 Serial Interface Control Commands

3.1. AT&C Set DCD Function Mode

The command controls the behavior of the UE‟s DCD (data carrier detection) line.

Parameter

3.2. AT&D Set DTR Function Mode

The command determines how the UE responds if DTR line is changed from low to high level during data mode.

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Reference V.25ter

<value> 0 TA ignores status on DTR 1 LowHigh on DTR: Change to command mode while remaining the connected call.

2 LowHigh on DTR: Disconnect data call, and change to command mode. When DTR

is at high level, auto-answer function is disabled.

AT+IFC Set TE-TA Local Data Flow Control

Test Command AT+IFC=?

Response

+IFC: (list of supported <dce_by_dte>s),(list of supported <dte_by_dce>s)

OK

Read Command

AT+IFC?

Response

+IFC: <dce_by_dte>,<dte_by_dce>

OK

Write Command

AT+IFC=<dce_by_dte>,<dte_by_dce>

Response This parameter setting determines the data flow control on the serial interface for data mode. OK

Maximum Response Time

300ms

Reference V.25ter

<dce_by_dte> Specifies the method that will be used by TE when receiving data from TA 0 None 2 RTS flow control <dte_by_dce> Specifies the method that will be used by TA when receiving data from TE 0 None 2 CTS flow control

EC25&EC21 AT Commands Manual

Parameter

3.3. AT+IFC Set TE-TA Local Data Flow Control

The command determines the flow control behavior of the serial port.

Parameter

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Flow control is only applicable for data mode.

AT+ICF Set TE-TA Control Character Framing

Test Command AT+ICF=?

Response

+ICF: (list of supported <format>s),(list of supported <parity>s)

OK

Read Command

AT+ICF?

Response

+ICF: <format>,<parity>

OK

Write Command

AT+ICF=[<format>,[<parity>]]

Response This parameter setting determines the serial interface character framing format and parity received by TA from TE. OK

Maximum Response Time

300ms

Reference V.25ter

<format> 3 8 data 0 parity 1 stop <parity> 0 Odd

1 Even

NOTE

EC25&EC21 AT Commands Manual

Example

AT+IFC=2,2 //Open the hardware flow control

OK

AT+IFC?

+IFC: 2,2

OK

3.4. AT+ICF Set TE-TA Control Character Framing

The command determines the serial interface character framing format and parity received by TA from TE.

Parameter

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1. The command is applied for command state.

2. The <parity> field is ignored if the <format> field specifies no parity.

2 Mark (1)

3 Space (0)

AT+IPR Set TE-TA Fixed Local Rate

Test Command AT+IPR=?

Response +IPR: (list of supported auto detectable <rate>s),(list of supported fixed-only <rate>s)

OK

Read Command

AT+IPR?

Response

+IPR: <rate>

OK

Write Command

AT+IPR=<rate>

Response This parameter setting determines the data rate of the TA on the serial interface. After the delivery of any result code associated with the current command line, the rate of command takes effect. OK

Maximum Response Time

300ms

Reference V.25ter

<rate> Baud rate per second

9600 19200 38400 57600

NOTES

EC25&EC21 AT Commands Manual

3.5. AT+IPR Set TE-TA Fixed Local Rate

The command is used to query and set the baud rate of the UART. The default baud rate value (<rate>) is 115200bps. The setting of <rate> will not be restored with AT&F.

Parameter

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1. If a fixed baud rate is set, make sure that both TE (DTE, usually external processor) and TA (DCE,

Quectel module) are configured to the same rate.

2. The value of AT+IPR cannot be restored with AT&F and ATZ; but it is still storable with AT&W.

3. In multiplex mode, the baud rate cannot be changed by the Write Command AT+IPR=<rate>; and

the setting is invalid and cannot be stored even if AT&W is executed after the Write Command.

4. A selected baud rate takes effect after the Write Commands are executed and acknowledged by OK.

115200

230400

460800 921600 2900000 3000000

AT+QRIR Restore RI Behavior to Inactive

Test Command

AT+QRIR=?

Response OK

Execution Command

AT+QRIR

Response

OK

NOTES

EC25&EC21 AT Commands Manual

Example

AT+IPR=115200 //Set fixed baud rate to 115200bps

OK

AT&W //Store current setting, that is, the serial communication

speed is 115200bps after restarting module

OK

AT+IPR?

+IPR: 115200

OK

AT+IPR=115200;&W //Set fixed baud rate to 115200bps and store current setting

OK

3.6. AT+QRIR Restore RI Behavior to Inactive

If the RI (ring indicator) behavior is "always", it can be restored to inactive by the Execution Command. The RI behavior is controlled by AT+QCFG. Please refer to AT+QCFG="urc/ri/ring",

AT+QCFG="urc/ri/smsincoming" and AT+QCFG="urc/ri/other" for more details.

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ERROR

Maximum Response Time

300ms

EC25&EC21 AT Commands Manual

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AT+CPAS Mobile Equipment Activity Status

Test Command AT+CPAS=?

Response

+CPAS: (list of supported <pas>s)

OK

Execution Command

AT+CPAS

Response TA returns the activity status of ME:

+CPAS: <pas>

OK ERROR

If there is any error related to ME functionality:

+CME ERROR: <err>

Maximum Response Time

300ms

Reference 3GPP TS 27.007

<pas> 0 Ready 3 Ringing 4 Call in progress or call hold

EC25&EC21 AT Commands Manual

4 Status Control Commands

4.1. AT+CPAS Mobile Equipment Activity Status

The Execution Command queries the module‟s activity status.

Parameter

Example

AT+CPAS

+CPAS: 0 //The module is idle

OK

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AT+CEER Extended Error Report

Test command

AT+CEER=?

Response

OK

Execution command

AT+CEER

Response

+CEER: <text>

OK ERROR

If error is related to ME functionality:

EC25&EC21 AT Commands Manual

RING

AT+CLCC

+CLCC: 1,1,4,0,0,“15695519173”,161

OK

AT+CPAS

+CPAS: 3 //The module is ringing

OK

AT+CLCC

+CLCC: 1,0,0,0,0,“10010”,129

OK

AT+CPAS

+CPAS: 4 //Call in progress

OK

4.2. AT+CEER Extended Error Report

The command is used to query an extended error and report the cause of the last failed operation, such as:

 the failure to release a call  the failure to set up a call (both mobile originated or terminated)  the failure to modify a call by using supplementary services  the failure to activate, register, query, deactivate or deregister a supplementary service  the failure to attach GPRS or the failure to activate a PDP context  the failure to detach GPRS or the failure to deactivate a PDP context

The release cause <text> is a text to describe the cause information given by the network.

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<text> Release cause text. Reason for the last call failure to setup or release (listed in

Chapter 14.9). Both CS and PS domain call types are reported. Cause data is captured from Call Manager events and cached locally for later use by this command.

+CME ERROR: <err>

Maximum Response Time

300ms

AT+QCFG Extended Configuration Settings

Test Command

AT+QCFG=?

Response

+QCFG: “gprsattach”, (list of supported <attachmode>s) +QCFG: “nwscanmode”,

(list of supported <scanmode>s), (list of supported <effect>s) +QCFG: “nwscanseq”, (list of supported <scanseq>s), (list of supported <effect>s) +QCFG: “roamservice”, (list of supported <roammode>s), (list of supported <effect>s) +QCFG: “servicedomain”, (list of supported <service>s), (list of supported <effect>s) +QCFG: “band”, (list of supported <bandval>s), (list of supported <ltebandval>s) (list of supported <effect>s) +QCFG: “hsdpacat”, (list of supported <cat>s) +QCFG: “hsupacat”, (list of supported <cat>s) +QCFG: “rrc”, (list of supported <rrcr>s)

EC25&EC21 AT Commands Manual

Parameter

4.3. AT+QCFG Extended Configuration Settings

The command is used to query and configure various settings of UE.

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+QCFG: “sgsn”, (list of supported <sgsnr>s)

+QCFG: “msc”,(list of supported <mscr>s) +QCFG: "pdp/duplicatechk",(list of supported <enable>s) +QCFG: "tdscsq",(list of supported <value>s) +QCFG: "urc/ri/ring",(list of supported <typeri>s),

(list of supported <pulseduration>s), (list of supported <activeduration>s), (list of supported <inactiveduration>s), (list of supported <ringnodisturbing>s)

+QCFG: "urc/ri/smsincoming",

(list of supported <typeri>s), (list of supported <pulseduration>s)

+QCFG: "urc/ri/other",

(list of supported <typeri>s), (list of supported <pulseduration>s)

+QCFG: "risignaltype", (list of supported <risignatype>s) +QCFG: "urc/cache", (list of supported <value>s) +QCFG: "tone/incoming" (list of supported <value>s)

OK

Maximum Response Time

300ms

Reference

AT+QCFG="gprsattach" GPRS Attach Mode Configuration

Write Command

AT+QCFG=“gprsattach”[,<attachmode >]

Response If <attachmode> is omitted, return current configuration:

+QCFG: “gprsattach”,<attachmode>

OK

If the configuration parameter <attachmode> is not omitted, configure the GPRS attach mode:

OK

EC25&EC21 AT Commands Manual

4.3.1. AT+QCFG="gprsattach" GPRS Attach Mode Configuration

The command specifies the mode to attach GPRS when UE is powered on. This configuration is valid only after the module is restarted.

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ERROR

If there is any error related to ME functionality:

+CME ERROR: <err>

Maximum Response Time

300ms

<attachmode> Number format, the mode to attach GRPS when UE is powered on 0 Manual attach

1 Auto attach

AT+QCFG="nwscanmode" Network Search Mode Configuration

Write Command

AT+QCFG=“nwscanmode”[,<scanmod e>[,<effect>]]

Response If <scanmode> and <effect> are both omitted, return the current configuration:

+QCFG: “nwscanmode”,<scanmode>

OK

If <scanmode> and <effect> are not omitted, set the network mode to be searched:

OK ERROR

If there is any error related to ME functionality:

+CME ERROR: <err>

Maximum Response Time

300ms

<scanmode> Number format, network search mode

0 AUTO 1 GSM only 2 WCDMA only 3 LTE only

EC25&EC21 AT Commands Manual

Parameter

4.3.2. AT+QCFG="nwscanmode" Network Search Mode Configuration

The command specifies the network mode to be serached. If <effect> is omitted, the configuration will take effect immediately.

Parameter

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4 TD-SCDMA only 5 UMTS only 6 CDMA only 7 HDR only 8 CDMA and HDR only

<effect> Number format. When to take effect

0 Take effect after UE reboots 1 Take effect immediately

AT+QCFG="nwscanseq" Network Searching Sequence Configuration

Write Command

AT+QCFG=“nwscanseq”[,<scanseq>]

Response If <scanseq> is omitted, return current configuration:

+QCFG: “nwscanseq”,<scanseq> OK

If <scanseq> is omitted, specify the network searching sequence:

OK ERROR

If there is any error related to ME functionality:

+CME ERROR: <err>

Maximum Response Time

300ms

<scanseq> Number format. Network search sequence (e.g.: 04030201(LTE/WCDMA/TD-SCDMA/GSM))

00 Automatic (LTE/ WCDMA/TD-SCDMA/GSM) 01 GSM 02 TD-SCDMA 03 WCDMA 04 LTE 05 CDMA

EC25&EC21 AT Commands Manual

4.3.3. AT+QCFG="nwscanseq" Network Searching Sequence Configuration

The command specifies the sequence of searching network. This configuration is valid only after the module is restarted.

Parameter

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AT+QCFG="roamservice" Roam Service Configuration

Write Command

AT+QCFG=“roamservice”[,<roammod e>[,<effect>]]

Response If <roammode> and <effect> are both omitted, return the current configuration:

+QCFG: "roamservice",<roammode>

OK

If <roammode> and <effect> are not omitted, configure the mode of roam service :

OK ERROR

If there is any error related to ME functionality:

+CME ERROR: <err>

Maximum Response Time

300ms

<roammode> Number format. The mode of roam service

1 Disable roam service 2 Enable roam service

255 AUTO <effect> Number format. When to take effect 0 Take effect after UE reboots 1 Take effect immediately

AT+QCFG="servicedomain" Service Domain Configuration

Write Command

AT+QCFG=“servicedomain”[,<service >[,<effect>]]

Response If <service> and <effect> are both omitted, return the current configuration:

EC25&EC21 AT Commands Manual

4.3.4. AT+QCFG="roamservice" Roam Service Configuration

The command is used to enable or disable the roam service. If <effect> is omitted, the configuration will take effect immediately.

Parameter

4.3.5. AT+QCFG="servicedomain" Service Domain Configuration

The command specifies the registered service domain. If <effect> is omitted, the configuration will take effect immediately.

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+QCFG: "servicedomain",<service>

OK

If <service> and <effect> are not omitted, configure the service domain of UE:

OK ERROR

If there is any error related to ME functionality:

+CME ERROR: <err>

Maximum Response Time

300ms

<service> Service domain of UE

0 CS only 1 PS only 2 CS & PS

<effect> Number format. When to take effect

0 Take effect after UE reboots 1 Take effect immediately

AT+QCFG="band" Band Configuration

Write Command

AT+QCFG=“band”[,<bandval>,<lteban dval>,<tdsbandval>[,<effect>]]

Response If configuration parameters are omitted (that is, only execute

AT+QCFG="band"), return current configuration: +QCFG: “band”,<bandval>,<ltebandval>,<tdsbandval>

OK

If configuration parameters are all entered, configure the preferred frequency bands to be searched:

OK ERROR

If there is any error related to ME functionality:

EC25&EC21 AT Commands Manual

Parameter

4.3.6. AT+QCFG="band" Band Configuration

The command specifies the preferred frequency bands to be searched of UE. If <effect> is omitted, the configuration will take effect immediately.

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+CME ERROR: <err>

Maximum Response Time

300ms

<bandval> A hexadecimal value that specifies the GSM and WCDMA frequency band. If it

is set to 0, it means not to change GSM and WCDMA frequency band. (e.g.: 00000013=00000001(GSM900)+00000002(GSM1800)+00000010(WCDMA

2100)) 00000000 No change 00000001 GSM900 00000002 GSM1800 00000004 GSM850 00000008 GSM1900 00000010 WCDMA 2100 00000020 WCDMA 1900 00000040 WCDMA 850

00000080 WCDMA 900 00000100 WCDMA 800 00000200 WCDMA 1700

0000FFFF Any frequency band

<ltebandval> A hexadecimal value that specifies the LTE frequency band. If it is set to 0 or

0x40000000, it means not to change LTE frequency band. (e.g.: 0x15=0x1(LTE

B1)+0x4(LTE B3)+0x10(LTE B5)) 0x1 (CM_BAND_PREF_LTE_EUTRAN_BAND1) LTE B1 0x4 (CM_BAND_PREF_LTE_EUTRAN_BAND3) LTE B3 0x10 (CM_BAND_PREF_LTE_EUTRAN_BAND5) LTE B5 0x40 (CM_BAND_PREF_LTE_EUTRAN_BAND7) LTE B7 0x80 (CM_BAND_PREF_LTE_EUTRAN_BAND8) LTE B8 0x80000(CM_BAND_PREF_LTE_EUTRAN_BAND20) LTE B20 0x7FFFFFFFFFFFFFFF(CM_BAND_PREF_ANY) Any frequency band <tdsbandval> A hexadecimal value that specifies the TD-SCDMA frequency band. If it is set to

0 or 0x40000000, it means not to change TD-SCDMA frequency band. (e.g.: 0x21=0x1(TDS BCA)+0x20(TDS BCF))

0x1 (CM_BAND_PREF_TDS_BANDA) TDS BCA 0x2 (CM_BAND_PREF_TDS_BANDB) TDS BCB 0x4 (CM_BAND_PREF_TDS_BANDC) TDS BCC 0x8 (CM_BAND_PREF_TDS_BANDD) TDS BCD 0x10 (CM_BAND_PREF_TDS_BANDE) TDS BCE 0x20 (CM_BAND_PREF_TDS_BANDF) TDS BCF <effect> When to take effect

0 Take effect after UE reboots

EC25&EC21 AT Commands Manual

Parameter

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1 Take effect immediately

AT+QCFG="hsdpacat" HSDPA Category Configuration

Write Command

AT+QCFG=“hsdpacat”[,<cat>]

Response If <cat> is omitted, return the current configuration:

+QCFG: "hsdpacat",<cat>

OK

If <cat> is not omitted, configure the HSDPA category: OK ERROR

If there is any error related to ME functionality:

+CME ERROR: <err>

Maximum Response Time

300ms

<cat> HSDPA category

6 Category 6 8 Category 8 10 Category 10 12 Category 12 14 Category 14 18 Category 18 20 Category 20 24 Category 24

AT+QCFG="hsupacat" HSUPA Category Configuration

Write Command

AT+QCFG=“hsupacat”[,<cat>]

Response If <cat> is omitted, return the current configuration:

+QCFG: "hsupacat",<cat>

EC25&EC21 AT Commands Manual

4.3.7. AT+QCFG="hsdpacat" HSDPA Category Configuration

The command specifies the HSDPA category. This configuration is valid only after the module is restarted.

Parameter

4.3.8. AT+QCFG="hsupacat" HSUPA Category Configuration

The command specifies the HSUPA category. This configuration is valid only after the module is restarted.

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OK

If <cat> is not omitted, configure the HSUPA category: OK ERROR

If there is any error related to ME functionality:

+CME ERROR: <err>

Maximum Response Time

300ms

<cat> HSUPA category

5 Category 5 6 Category 6

AT+QCFG="rrc" RRC Release Version Configuration

Write Command

AT+QCFG=“rrc”[,<rrcr>]

Response If <rrcr> is omitted, return the current configuration:

+QCFG: “rrc”,<rrcr>

OK

If <rrcr> is not omitted, configure the RRC release version: OK ERROR

If there is any error related to ME functionality:

+CME ERROR: <err>

Maximum Response Time

300ms

<rrcr> RRC release version.

0 R99

EC25&EC21 AT Commands Manual

Parameter

4.3.9. AT+QCFG="rrc" RRC Release Version Configuration

The command specifies the RRC release version. This configuration is valid only after the module is restarted.

Parameter

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1 R5 2 R6 3 R7 4 R8

AT+QCFG="sgsn" UE SGSN Release Version Configuration

Write Command

AT+QCFG=“sgsn”[,<sgsnr>]

Response If <sgsnr> is omitted, return the current configuration:

+QCFG: “sgsn”,<sgsnr>

OK

If <sgsnr> is not omitted, configure the SGSN release version:

OK ERROR

If there is any error related to ME functionality:

+CME ERROR: <err>

Maximum Response Time

300ms

<sgsnr> SGSN release version

0 R97 1 R99 2 Dynamic

AT+QCFG="msc" UE MSC Release Version Configuration

Write Command

AT+QCFG="msc"[,<mscr>]

Response If <mscr> is omitted, return the current configuration:

+QCFG: "msc",<mscr>

EC25&EC21 AT Commands Manual

4.3.10. AT+QCFG="sgsn" UE SGSN Release Version Configuration

The command specifies the UE SGSN release version. This configuration is valid only after the module is restarted.

Parameter

4.3.11. AT+QCFG="msc" UE MSC Release Version Configuration

The command specifies the UE MSC release version. This configuration is valid only after the module is restarted.

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OK

If <mscr> is not omitted, configure the MSC release version: OK ERROR

If there is an error related to ME functionality:

+CME ERROR: <err>

Maximum Response Time

300ms

<mscr> MSC release version

0 R97 1 R99 2 Dynamic

AT+QCFG="pdp/duplicatechk" Establish Multi PDNs with the Same APN

Write Command

AT+QCFG=“pdp/duplicatechk”[,<enabl

e>]

Response If <enable> is omitted, return the current configuration:

+QCFG: “pdp/duplicatechk”,<enable>

OK

If <enable> is not omitted, allow/refuse establishing multiple PDNs with the same APN profile:

OK ERROR

If there is any error related to ME functionality:

+CME ERROR: <err>

Maximum Response Time

300ms

EC25&EC21 AT Commands Manual

Parameter

4.3.12. AT+QCFG="PDP/duplicatechk" Establish Multi PDNs with the Same APN

The command allows/refuses establishing multi PDNs with the same APN profile. The configuration will take effect immediately.

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<enable> 0 Refused to establish multi PDNs with the same APN profile 1 Allowed to establish multi PDNs with the same APN profile

AT+QCFG="urc/ri/ring" RI Behavior When RING URC is Presented

Write Command

AT+QCFG="urc/ri/ring"[,<typeri>[,<pul seduration>[,<activeduration>[,<inacti veduration>[,<ringnodisturbing>]]]]]

Response If <typeri>, <pulseduration>, <activeduration>, <inactiveduration> and <ringnodisturbing> are omitted, return the current configuration:

+QCFG: "urc/ri/ring",<typeri>,<pulseduration>,<activeduration>, <inactiveduration>,<ringnodisturbing>,<pulsecount>

OK

If all configuration parameters are entered, set the RI behavior when RING URC is presented:

OK ERROR

If there is any error related to ME functionality:

+CME ERROR: <err>

Maximum Response Time

300ms

<typeri> RI behavior when URCs are presented "off" No change. Ring indicator keeps inactive.

"pulse" Pulse. Pulse width determined by <pulseduration>.

"always" Change to active. RI behavior can be restored to inactive by

AT+QRIR.

EC25&EC21 AT Commands Manual

Parameter

4.3.13. AT+QCFG="urc/ri/ring" RI Behavior When RING URC is Presented

AT+QCFG="urc/ri/ring", AT+QCFG="urc/ri/smsincoming" and AT+QCFG="urc/ri/other" control the

RI (ring indicator) behavior when a URC is reported. These configurations will be stored into NV automatically. The ring indicator is active low. AT+QCFG="urc/ri/ring" specifies the RI behavior when URC RING is presented to indicate an incoming call.

The sum of parameter <activeduration> and <inactiveduration> determines the interval time of “RING” indications when a call is coming.

Parameter

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"auto" When “RING” is presented to indicate an incoming call, the

ring indicator changes to and keeps active. When ring of the incoming call ends, either answering or hanging up the incoming call, the ring indicator will change to inactive.

"wave" When RING is presented to indicate an incoming call. The ring

indicator outputs a square wave. Both <activeduration> and <inactiveduration> are used to set parameters of the square wave. When the ring of incoming call ends, either answering or hanging up the incoming call, the ring indicator will change to inactive.

<pulseduration> Set the width of pulse. The value ranges from 1 to 2000ms and the default is

120ms. This parameter is only meaningful when <typeri> is “pulse”. If this parameter is not needed, it can be set as null.

<activeduration> The active duration of the square wave. The value ranges from 1 to 10000ms,

and the default is 1000ms. This parameter is only meaningful when <typeri> is “wave”.

<inactiveduration> Set the inactive duration of the square wave. The value ranges from 1 to

10000ms, and the default is 5000ms. This parameter is only meaningful when <typeri> is “wave”.

<ringnodisturbing> Set whether the ring indicator behavior could be disturbed. This parameter is

only meaningful when <typeri> is configured to “auto” or “wave”. For example, when <typeri> is configured to “wave”, if the square wave does not need to be disturbed by other URCs (including SMS related URCs), then <ringnodisturbing> should be set to "on".

behavior is caused by an incoming call ringing.

"on" RI behavior cannot be disturbed by other URCs when the

behavior is caused by an incoming call ringing.

<pulsecount> The count of pulse. This parameter is only meaningful when <typeri> is

“pulse”. The value ranges from 1 to 5 and the default is 1. The interval time between two pulses is equal to <pulseduration>.

EC25&EC21 AT Commands Manual

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AT+QCFG="urc/ri/smsincoming" RI Behavior When Incoming SMS URCs are Presented

Write Command

AT+QCFG="urc/ri/smsincoming"[,<typ eri>[,<pulseduration>]]

Response If <typeri> and <pulseduration> are omitted, return the current configuration:

+QCFG: "urc/ri/smsincoming",<typeri>,<pulseduration>,<pulsec ount>

OK

If <typeri> and <pulseduration> are not omitted, set the RI behavior when incoming SMS URCs are presented:

OK ERROR

If there is any error related to ME functionality:

+CME ERROR: <err>

Maximum Response Time

300ms

<typeri> RI behavior when URCs are presented "off" No change. Ring indicator keeps inactive.

"pulse" Pulse. Pulse width determined by <pulseduration>. "always" Change to active. RI behavior can be restored to inactive by

AT+QRIR.

<pulseduration> Set the width of pulse. Value ranges from 1 to 2000ms and the default is 120ms.

This parameter is only valid when <typeri> is “pulse”.

<pulsecount> The count of pulse. This parameter is only meaningful when <typeri> is “pulse”.

The value ranges from 1 to 5 and the default is 1. The interval time between two

pulses is equal to <pulseduration>.

EC25&EC21 AT Commands Manual

4.3.14. AT+QCFG="urc/ri/smsincoming" RI Behavior When Incoming SMS URCs are Presented

The command specifies the RI (ring indicator) behavior when related incoming message URCs are presented. Related incoming message URCs list: +CMTI, +CMT, +CDS and +CBM.

Parameter

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AT+QCFG="urc/ri/other" RI Behavior When Other URCs are Presented

Write Command

AT+QCFG="urc/ri/other"[,<typeri>[,<p ulseduration>]]

Response If <typeri> and <pulseduration> are omitted, return the current configuration:

+QCFG: "urc/ri/other",<typeri>,<pulseduration>,<pulsecount>

OK

If <typeri> and <pulseduration> are not omitted, set the RI behavior when other URCs are presented:

OK ERROR

If there is any error related to ME functionality:

+CME ERROR: <err>

Maximum Response Time

300ms

<typeri> RI behavior when URCs are presented "off" No change. Ring indicator keeps inactive. "pulse" Pulse. Pulse width determined by <pulseduration>. <pulseduration> Set the width of pulse. Value ranges from 1 to 2000ms and the default is 120ms.

This parameter is effect only when <typeri> is “pulse”. <pulsecount> The count of pulse. This parameter is only meaningful when <typeri> is “pulse”. The value ranges from 1 to 5 and the default is 1. The interval time between two

pulses is equal to <pulseduration>.

AT+QCFG="risignaltype" RI Signal Output Carrier

Write Command

AT+QCFG="risignaltype",[<risignatyp e>]

Response If <risignatype> is omitted, return the current configuration:

+QCFG: "risignaltype",<risignatype>

EC25&EC21 AT Commands Manual

4.3.15. AT+QCFG="urc/ri/other" RI Behavior When Other URCs are Presented

The command specifies the RI (ring indicator) behavior when other URCs are presented.

Parameter

4.3.16. AT+QCFG="risignaltype" RI Signal Output Carrier

The command specifies the RI (ring indicator) signal output carrier.

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OK

If <risignatype> is not omitted, configure the RI signal output carrier:

OK ERROR

If there is any error related to ME functionality:

+CME ERROR: <err>

Maximum Response Time

300ms

<risignaltype> RI signal output carrier.

"respective" The ring indicator behaves on the port where URC is

presented. For example, if a URC is presented on UART port, it is physical ring indicator. If the URC is presented on USB port, it is virtual ring indicator. If the URC is presented on USB AT port, and the port does not support ring indicator, then there will be no ring indicator. AT+QURCCFG=“urcport” can get the port on which URC is presented.

"physical" No matter which port URC is presented on, URC only

causes the behavior of physical ring indicator.

AT+QCFG="urc/delay" Delay URC Indication

Write Command

AT+QCFG="urc/delay"[,<enable>]

Response If <enable> is omitted, return the current configuration :

+QCFG: "urc/delay",<enable>

OK

If <enable> is not omitted, set when the URC indication will be outputted:

OK ERROR

If there is any error related to ME functionality:

EC25&EC21 AT Commands Manual

Parameter

4.3.17. AT+QCFG="urc/delay" Delay URC Indication

The command can delay the output of URC indication until ring indicator pulse ends.

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The settings of the command will take effect immediately and will not be saved after power off.

+CME ERROR: <err> Maximum Response Time

300ms

<enable> 0 URC indication will be outputted when ring indicator pulse starts.

1 URC indication will be outputted when ring indicator pulse ends (only

effective when the type of ring indicator is “pulse”. Please refer to

AT+QCFG="urc/ri/ring", AT+QCFG="urc/ri/smsincoming" and AT+QCFG="urc/ri/other" for more details).

AT+QCFG="urc/cache" URC Cache Function

Write Command

AT+QCFG="urc/cache",<enable>

Response If <enable> is omitted, return the current configuration:

+QCFG: "urc/cache",<enable>

OK

If <enable> is not omitted, enable/disable URC cache function:

OK ERROR

If there is any error related to ME functionality: +CME ERROR: <err>

Maximum Response Time

300ms

<enable> 0 Disable URC cache

1 Enable URC cache

NOTE

EC25&EC21 AT Commands Manual

Parameter

4.3.18. AT+QCFG="urc/cache" URC Cache Function

Parameter

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AT+QCFG="tone/incoming" Ring Tone Function

Write Command

AT+QCFG="tone/incoming",<enable>

Response If <enable> is omitted, return the current configuration:

+QCFG: "tone/incoming",<enable>

OK

If <enable> is not omitted, enable/disable ring tone function: OK ERROR

EC25&EC21 AT Commands Manual

Example

AT+QCFG="urc/cache"

+QCFG: "urc/cache",0 //URC cache function is disabled

OK

AT+QCFG="urc/cache",1 //Enable URC cache

OK

AT+QCFG="urc/cache"

+QCFG: "urc/cache",1

OK

//Make a call and send two messages to the module

AT+QCFG="urc/cache",0 //Disable URC cache

OK

RING //Output cached URC

NO CARRIER //Output cached URC

+CMTI: "ME",0 //Output cached URC

+CMTI: "ME",1 //Output cached URC

AT+QCFG="urc/cache"

+QCFG: "urc/cache",0 //URC cache function is disabled

OK

4.3.19. AT+QCFG="tone/incoming" Ring tone Function

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The settings of the command will take effect immediately, and will be saved after power off.

If there is any error related to ME functionality:

+CME ERROR: <err>

Reference

<enable> 0 Disable ring tone

1 Enable Nokia ring tone 2 Enable ring tone

AT+QINDCFG URC Indication Configuration

Test command

AT+QINDCFG=?

Response

+QINDCFG: "all",(0,1),(0,1) +QINDCFG: "csq",(0,1),(0,1) +QINDCFG: "smsfull",(0,1),(0,1) +QINDCFG: "ring",(0,1),(0,1) +QINDCFG: "smsincoming",(0,1),(0,1) +QINDCFG: "act",(0,1),(0,1)

NOTE

EC25&EC21 AT Commands Manual

Parameter

Example

AT+QCFG="tone/incoming"

+QCFG: "tone/incoming",0 //Ring tone function is disabled

OK

AT+QCFG="tone/incoming",1 //Enable ring tone

OK

AT+QCFG="tone/incoming"

+QCFG: "tone/incoming",1

OK

4.4. AT+QINDCFG URC Indication Configuration

The command is used to control URC indication.

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<urctype> URC type "all" Main switch of all URCs. Default is ON.

"csq" Indication of signal strength and channel bit error rate

change (similar to AT+CSQ). Default is OFF. If this configuration is ON, present:

+QIND: “csq”,<rssi>,<ber>

"smsfull" SMS storage full indication. Default is OFF. If this

configuration is ON, present:

+QIND: “smsfull”,<storage>

"ring" “RING” indication. Default is ON. "smsincoming" Incoming message indication. Default is ON.

Related URCs list:

+CMTI, +CMT, +CDS

"act" Indication of network access technology change.

Default is OFF. If this configuration is ON, present: +QIND: "act",<actvalue> <actvalue> is string format. The values are as below: “GSM” “EGPRS” “WCDMA” “HSDPA” “HSUPA” “HSDPA&HSUPA”

OK

Write command

AT+QINDCFG=<urctype>[,<enable>[,< savetonvram>]]

Response If <enable> and <savetonvram> are omitted, the current configuration will be returned:

+QINDCFG: <urctype>,<enable>

OK

If <enable> and <savetonvram> are not omitted, set the URC indication configurations:

OK ERROR

If there is any error related to ME functionality:

+CME ERROR: <err>

Maximum Response Time

300ms

EC25&EC21 AT Commands Manual

Parameter

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“LTE” “TD-SCDMA” “CDMA”

“HDR”

“EVDO”

“UNKNOWN” The examples of URC are as below: +QIND: "act","HSDPA&HSUPA"

+QIND: "act","UNKNOWN" The description of “act” is as below:

1. If module does not register on network, the <actvalue> would be “UNKNOWN”.

2. If this configuration is ON, the URC of "act" will be reported immediately. Only when the network access technology changes, a new URC will be reported.

<enable> URC indication is ON or OFF

0 OFF

1 ON <savetonvram> Whether to save configuration into NV. Not saved by default. 0 Not save 1 Save

EC25&EC21 AT Commands Manual

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AT+CIMI Request International Mobile Subscriber Identity (IMSI)

Test Command AT+CIMI=?

Response

OK

Execution Command

AT+CIMI

Response TA returns <IMSI> for identifying the individual (U)SIM which is attached to ME.

<IMSI>

OK

If there is any error related to ME functionality:

+CME ERROR: <err>

Maximum Response Time

300ms

Reference 3GPP TS 27.007

<IMSI> International Mobile Subscriber Identity (string without double quotes)

EC25&EC21 AT Commands Manual

5 (U)SIM Related Commands

5.1. AT+CIMI Request International Mobile Subscriber Identity (IMSI)

The command requests the International Mobile Subscriber Identity (IMSI) which is intended to permit the TE to identify the individual SIM card or active application in the UICC (GSM or USIM) that is attached to MT.

Parameter

Example

AT+CIMI

460023210226023 //Query IMSI number of (U)SIM which is attached to ME

OK

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AT+CLCK Facility Lock

Test Command AT+CLCK=?

Response

+CLCK: (list of supported <fac>s)

OK

Write Command

AT+CLCK=<fac>,<mode>[,<passwd>[ ,<class>]]

Response This command is used to lock, unlock or interrogate the ME or network facility <fac>. Password is normally needed to do such actions. When querying the status of network service (<mode>=2) the response line for „not active‟ case (<status>=0) should be returned only if service is not active for any <class>.

If <mode> is not equal to 2 and the command is set successfully:

OK

If <mode>=2 and command is set successfully: +CLCK: <status>[,<class>] [+CLCK: <status>[,<class>]] […]

OK

Maximum Response Time

5s

Reference 3GPP TS 27.007

<fac> “SC” (U)SIM (lock SIM/UICC card installed in the currently selected card slot)

(SIM/UICC asks password in MT power-up and when this lock command issued).

“AO” BAOC (Bar All Outgoing Calls) (refer to 3GPP TS 22.088 clause 1).

“OI” BOIC (Bar Outgoing International Calls) (refer to 3GPP TS 22.088 clause 1).

“OX” BOIC-exHC (Bar Outgoing International Calls except to Home Country) (refer to

3GPP TS 22.088 clause 1).

“AI” BAIC (Bar All Incoming Calls) (refer to 3GPP TS 22.088 clause 2).

EC25&EC21 AT Commands Manual

5.2. AT+CLCK Facility Lock

The command is used to lock, unlock or interrogate a MT or a network facility <fac>. It can be aborted when network facilities are being set or interrogated. The factory default password of PF, PN, PU, PP and PC lock is “12341234”.

Parameter

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“IR” BIC-Roam (Bar Incoming Calls when Roaming outside the home country) (refer

to 3GPP TS 22.088 clause 2).

“AB” All Barring services (refer to 3GPP TS 22.030) (applicable only for <mode>=0). “AG” All outgoing barring services (refer to 3GPP TS 22.030) (applicable only for

<mode>=0).

“AC” All incoming barring services (refer to 3GPP TS 22.030) (applicable only for

<mode>=0).

“FD” SIM card or active application in the UICC (GSM or USIM) fixed dialing memory

feature (if PIN2 authentication has not been done during the current session, PIN2 is required as <passwd>).

“PF” Lock Phone to the very first inserted SIM/UICC card (also referred in the present

document as PH-FSIM) (MT asks password when other SIM/UICC cards are inserted).

“PN” Network Personalization (refer to 3GPP TS 22.022) “PU” Network Subset Personalization (refer to 3GPP TS 22.022) “PP” Service Provider Personalization (refer to 3GPP TS 22.022) “PC” Corporate Personalization (refer to 3GPP TS 22.022)

<mode> 0 Unlock 1 Lock 2 Query status

<passwd> Password <class> 1 Voice

2 Data 4 FAX 7 All telephony except SMS (Default) 8 Short message service 16 Data circuit synchronization 32 Data circuit asynchronization <status> 0 Off 1 On

EC25&EC21 AT Commands Manual

Example

AT+CLCK="SC",2 //Query the status of (U)SIM card

+CLCK: 0 //The (U)SIM card is unlocked (OFF)

OK

AT+CLCK="SC",1,"1234" //Lock (U)SIM card, and the password is 1234

OK

AT+CLCK="SC",2 //Query the status of (U)SIM card

+CLCK: 1 //The (U)SIM card is locked (ON)

OK

AT+CLCK="SC",0,"1234" //Unlock (U)SIM card

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AT+CPIN Enter PIN

Test Command AT+CPIN=?

Response

OK

Read Command

AT+CPIN?

Response TA returns an alphanumeric string indicating whether or not some password is required.

+CPIN: <code>

OK

Write Command

AT+CPIN=<pin>[,<new_pin>]

Response TA stores a password, such as (U)SIM PIN, (U)SIM PUK, etc., which is necessary before it can be operated. If the PIN is to be entered twice, the TA shall automatically repeat the PIN. If no PIN request is pending, no action is taken and an error message +CME ERROR is returned to TE.

If the PIN required is (U)SIM PUK or (U)SIM PUK2, the second pin is required. This second pin <new_pin> is used to replace the old pin in the (U)SIM. OK

Maximum Response Time

5s

Reference 3GPP TS 27.007

<code> READY MT is not pending for any password

SIM PIN MT is waiting for SIM PIN to be given

SIM PUK MT is waiting for SIM PUK to be given SIM PIN2 MT is waiting for SIM PIN2 to be given SIM PUK2 MT is waiting for SIM PUK2 to be given PH-NET PIN MT is waiting for network personalization password to be given PH-NET PUK MT is waiting for network personalization unblocking password

EC25&EC21 AT Commands Manual

OK

5.3. AT+CPIN Enter PIN

The command is used to enter a password or query whether or not the module requires a password which is necessary before it can be operated. The password may be (U)SIM PIN, (U)SIM PUK, PH-SIM PIN, etc.

Parameter

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to be given

PH-NETSUB PIN MT is waiting for network subset personalization password to be

given

PH-NETSUB PUK MT is waiting for network subset personalization unblocking

password to be given

PH-SP PIN MT is waiting for service provider personalization password to

be given

PH-SP PUK MT is waiting for service provider personalization unblocking

password to be given

PH-CORP PIN MT is waiting for corporate personalization password to be

given

PH-CORP PUK MT is waiting for corporate personalization unblocking

password to be given

<pin> String type. Password. If the requested password was a PUK, such as (U)SIM PUK1,

PH-FSIM PUK or another passwords, then <pin> must be followed by <new_pin>.

<new_pin> String type. New password required if the requested code was a PUK.

EC25&EC21 AT Commands Manual

Example

//Enter PIN

AT+CPIN?

+CPIN: SIM PIN //Queried PIN code is locked

OK

AT+CPIN=1234 //Enter PIN

OK

+CPIN: READY

AT+CPIN? //PIN has already been entered

+CPIN: READY

OK

//Enter PUK and PIN

AT+CPIN?

+CPIN: SIM PUK //Queried PUK code is locked

OK

AT+CPIN="26601934","1234" //Enter PUK and new PIN password

OK

+CPIN: READY

AT+CPIN?

+CPIN: READY //PUK has already been entered

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AT+CPWD Change Password

Test Command AT+CPWD=?

Response TA returns a list of pairs which present the available facilities and the maximum length of their password.

+CPWD: (list of supported <fac>s),(<pwdlength>s)

OK

Write Command

AT+CPWD=<fac>,<oldpwd>,<newpwd >

Response TA sets a new password for the facility lock function.

OK

Maximum Response Time

5s

Reference 3GPP TS 27.007

<fac> “SC” (U)SIM (lock SIM/UICC card) (SIM/UICC asks password in MT power-up and

when this lock command is issued)

“AO” BAOC (Bar All Outgoing Calls, refer to 3GPP TS 22.088 clause 1)

“OI” BOIC (Bar Outgoing International Calls, refer to 3GPP TS 22.088 clause 1)

“OX” BOIC-exHC (Bar Outgoing International Calls except to Home Country, refer to

3GPP TS 22.088 clause 1)

“AI” BAIC (Bar All Incoming Calls, refer to 3GPP TS 22.088 clause 2) “IR” BIC-Roam (Bar Incoming Calls when Roaming outside the home country, refer

to 3GPP TS 22.088 clause 2)

“AB” All barring services (refer to 3GPP TS 22.030, applicable only for <mode>=0) “AG” All outgoing barring services (refer to 3GPP TS 22.030, applicable only for

<mode>=0)

“AC All incoming barring services (refer to 3GPP TS 22.030, applicable only for

<mode>=0)

“P2” (U)SIM PIN2

<pwdlength> Integer type. Maximum length of password. <oldpwd> Password specified for the facility from the user interface or with command.

EC25&EC21 AT Commands Manual

OK

5.4. AT+CPWD Change Password

The command sets a new password for the facility lock function defined by AT+CLCK.

Parameter

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<newpwd> New password

AT+CSIM Generic (U)SIM Access

Test Command AT+CSIM=?

Response

OK

Write Command

AT+CSIM=<length>,<command>

Response

+CSIM: <length>,<response>

OK ERROR

If there is any error related to ME functionality:

+CME ERROR: <err>

Maximum Response Time

300ms

Reference

EC25&EC21 AT Commands Manual

Example

AT+CPIN?

+CPIN: READY

OK

AT+CPWD="SC","1234","4321" //Change (U)SIM card password to “4321”

OK //Restart module or re-activate the SIM card

AT+CPIN? //Query PIN code is locked

+CPIN: SIM PIN

OK

AT+CPIN="4321" //PIN must be entered to define a new password “4321”

OK

+CPIN: READY

5.5. AT+CSIM Generic (U)SIM Access

The command allows a direct control of the (U)SIM that is installed in the currently selected card slot by a distant application on the TE. The TE shall then keep the processing of (U)SIM information within the frame specified by GSM/UMTS.

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3GPP TS 27.007

<length> Integer type. Length of <command> or <response> string. <command> Command transferred by the MT to the (U)SIM in the format as described in

3GPP TS 51.011.

<response> Response to the command transferred by the (U)SIM to the MT in the format as

described in 3GPP TS 51.011.

AT+CRSM Restricted (U)SIM Access

Test Command AT+CRSM=?

Response

OK

Write Command

AT+CRSM=<command>[,<fileld>[,<P1 >,<P2>,<P3>[,<data>][,<pathld>]]]

Response

+CRSM: <sw1>,<sw2>[,<response>]

OK ERROR

If there is any error related to ME functionality: +CME ERROR: <err>

Maximum Response Time

300ms

Reference 3GPP TS 27.007

<command> (U)SIM command number 176 READ BINARY

178 READ RECORD

192 GET RESPONSE 214 UPDATE BINARY 220 UPDATE RECORD 242 STATUS

EC25&EC21 AT Commands Manual

Parameter

5.6. AT+CRSM Restricted (U)SIM Access

The command offers easy and limited access to the (U)SIM database. It transmits the (U)SIM command number <command> and its required parameters to the MT.

Parameter

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<fileId> Integer type. Identifier for an elementary data file on (U)SIM, if used by

<command>.

<P1>, <P2>, <P3> Integer type. Parameters transferred by the MT to the (U)SIM. These

parameters are mandatory for every command, except GET RESPONSE and STATUS. The values are described in 3GPP TS 51.011.

<data> Information which shall be written to the (U)SIM (hexadecimal character

format; refer to AT+CSCS).

<pathId> The directory path of an elementary file on a SIM/UICC in hexadecimal

format.

<sw1>, <sw2> Integer type. Information from the (U)SIM about the execution of the actual

command. These parameters are delivered to the TE in both cases, on successful or failed execution of the command.

<response> Response of a successful completion of the command previously issued

(hexadecimal character format; refer to AT+CSCS). STATUS and GET RESPONSE return data, which gives information about the current elementary data field. The information includes the type of file and its size (refer to 3GPP TS 51.011). After READ BINARY, READ RECORD or RETRIEVE DATA command, the requested data will be returned. <response> is not returned after a successful UPDATE BINARY, UPDATE RECORD or SET DATA command.

AT+QCCID Show ICCID

Test Command AT+QCCID=?

Response

OK

Execution Command

AT+QCCID

Response

+QCCID: <iccid>

OK ERROR

Maximum Response Time

300ms

<iccid> ICCID (Integrated Circuit Card Identifier) number of the (U)SIM card

EC25&EC21 AT Commands Manual

5.7. AT+QCCID Show ICCID

The command returns the ICCID (Integrated Circuit Card Identifier) number of the (U)SIM card.

Parameter

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AT+ QPINC Display PIN Remainder Counter

Test Command

AT+QPINC=?

Response

+QPINC: ("SC","P2")

OK

Read Command

AT+QPINC?

Response

+QPINC: "SC", <pincounter>,<pukcounter> +QPINC: "P2", <pincounter>,<pukcounter>

OK

Write Command

AT+QPINC=<facility>

Response

+QPINC: <facility>,<pincounter>,<pukcounter>

OK ERROR

If there is any error related to ME functionality:

+CME ERROR: <err>

Maximum Response Time

300ms

<facility> “SC” (U)SIM PIN “P2” (U)SIM PIN2

<pincounter> Number of attempts left to enter the password of PIN <pukcounter> Number of attempts left to enter the password of PUK

EC25&EC21 AT Commands Manual

Example

AT+QCCID //Query ICCID of the (U)SIM card

+QCCID: 89860025128306012474

OK

5.8. AT+QPINC Display PIN Remainder Counter

The command can query the number of attempts left to enter the password of (U)SIM PIN/PUK.

Parameter

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AT+QINISTAT Query Initialization Status of (U)SIM Card

Test Command

AT+QINISTAT=?

Response

+QINISTAT: (0-7)

OK

Execution Command

AT+QINISTAT

Response

+QINISTAT: <status>

OK

Maximum Response Time

300ms

<status> Initialization status of (U)SIM card. Actual value is the sum of several of the following four

kinds (e.g. 7=1+2+4 means CPIN READY & SMS DONE & PB DONE).

0 Initial state

1 CPIN READY. Operation like lock/unlock PIN is allowed 2 SMS initialization completed 4 Phonebook initialization completed

AT+ QSIMDET (U)SIM Card Detection

Test Command

AT+QSIMDET=?

Response

+QSIMDET: (0,1),(0,1)

OK

Read Command

AT+QSIMDET?

Response

+QSIMDET: <enable>,<insertlevel>

OK

Write Command

Response

EC25&EC21 AT Commands Manual

5.9. AT+QINISTAT Query Initialization Status of (U)SIM Card

The command is used to query the initialization status of (U)SIM card.

Parameter

5.10. AT+QSIMDET (U)SIM Card Detection

The command enables (U)SIM card hot-swap function. (U)SIM card is detected by GPIO interrupt. The level of (U)SIM card detection pin should also be set when the (U)SIM card is inserted.

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1. Hot-swap function is invalid if the configured value of <insertlevel> is inconsistent with hardware

design.

2. Hot-swap function takes effect after the module is restarted.

AT+QSIMDET=<enable>,<insertlevel>

OK ERROR

Maximum Response Time

300ms

<enable> Enable or disable (U)SIM card detection

0 Disable 1 Enable

<insertlevel> The level of (U)SIM detection pin when a (U)SIM card is inserted

0 Low level 1 High level

AT+ QSIMSTAT (U)SIM Card Insertion Status Report

Test Command AT+QSIMSTAT=?

Response

+QSIMSTAT: (0,1)

OK

NOTES

EC25&EC21 AT Commands Manual

Parameter

Example

AT+QSIMDET=1,0 //Set (U)SIM card detection pin level as low when (U)SIM card is inserted

OK <Remove (U)SIM card> +CPIN: NOT READY <Insert (U)SIM card> +CPIN: READY //If PIN1 of the (U)SIM card is unlocked

5.11. AT+QSIMSTAT (U)SIM Card Insertion Status Report

The command queries (U)SIM card insertion status or determines whether (U)SIM card insertion status report is enabled. The configuration of this command can be saved by AT&W.

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Read Command

AT+QSIMSTAT?

Response

+QSIMSTAT: <enable>,<inserted_status>

OK

Write Command

AT+QSIMSTAT=<enable>

Response

OK ERROR

Maximum Response Time

300ms

<enable> Enable or disable (U)SIM card insertion status report. If it is enabled, when (U)SIM

card is removed or inserted, the URC +QSIMSTAT: <enable>,<insertedstatus> will be reported.

0 Disable 1 Enable

<insertedstatus> (U)SIM card is inserted or removed. This argument is not allowed to be set.

0 Removed 1 Inserted 2 Unknown, before (U)SIM initialization

EC25&EC21 AT Commands Manual

Parameter

Example

AT+QSIMSTAT? //Query (U)SIM card insertion status

+QSIMSTAT: 0,1

OK

AT+QSIMDET=1,0

OK

AT+QSIMSTAT=1 //Enable (U)SIM card insertion status report

OK

AT+QSIMSTAT?

+QSIMSTAT: 1,1

OK <Remove (U)SIM card> +QSIMSTAT : 1,0 //Report of (U)SIM card insertion status, removed

+CPIN: NOT READY

AT+QSIMSTAT?

+QSIMSTAT: 1,0

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EC25&EC21 AT Commands Manual

OK <Insert (U)SIM card> +QSIMSTAT: 1,1 //Report of (U)SIM card insertion status, inserted

+CPIN: READY

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AT+COPS Operator Selection

Test Command AT+COPS=?

Response TA returns a set of five parameters, each representing an operator presenting in the network. Any of the formats may be unavailable and should then be an empty field. The list of operators shall be in the order of: home network, networks referenced in (U)SIM and other networks. +COPS: (list of supported <stat>,long alphanumeric <oper>, short alphanumeric <oper>,numeric <oper>s)[,<Act>])s]

[,,(list of supported <mode>s),(list of supported <format>s)]

OK

If there is any error related to ME functionality:

+CME ERROR: <err>

Read Command

AT+COPS?

Response TA returns the current mode and the currently selected operator. If no operator is selected, <format>, <oper> and

<Act> are omitted. +COPS: <mode>[,<format>[,<oper>][,<Act>]]

OK

If there is any error related to ME functionality: +CME ERROR: <err>

Write Command

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

Response TA forces an attempt to select and register the GSM/UMTS network operator. If the selected operator is not available, no other operator shall be selected (except <mode>=4). The format of selected operator name shall apply to further Read

EC25&EC21 AT Commands Manual

6 Network Service Commands

6.1. AT+COPS Operator Selection

The command returns the current operators and their status, and allows setting automatic or manual network selection.

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Command (AT+COPS?).

OK

If there is any error related to ME functionality: +CME ERROR: <err>

Maximum Response Time

180s, determined by network.

Reference 3GPP TS 27.007

<stat> 0 Unknown 1 Operator available 2 Current operator 3 Operator forbidden

<oper> Operator in format as per <mode> <mode> 0 Automatic mode. <oper> field is ignored

1 Manual operator selection. <oper> field shall be present and <Act> optionally 2 Manually deregister from network

3 Set only <format> (for AT+COPS? Read Command), and do not attempt

registration/deregistration (<oper> and <Act> fields are ignored). This value is invalid in the response of Read Command.

4 Manual/automatic selection. <oper> field shall be presented. If manual selection

fails, automatic mode (<mode>=0) is entered <format> 0 Long format alphanumeric <oper> which can be up to 16 characters long 1 Short format alphanumeric <oper> 2 Numeric <oper>. GSM location area identification number <Act> Access technology selected. Values 3, 4, 5 and 6 occur only in the response of Read

Command while MS is in data service state and is not intended for the AT+COPS Write

Command. 0 GSM 2 UTRAN 3 GSM W/EGPRS 4 UTRAN W/HSDPA 5 UTRAN W/HSUPA 6 UTRAN W/HSDPA and HSUPA

7 E-UTRAN 100 CDMA

EC25&EC21 AT Commands Manual

Parameter

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AT+CREG Network Registration Status

Test Command AT+CREG=?

Response

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

OK

Read Command

AT+CREG?

Response TA returns the status of result code presentation and an integer <stat> which shows whether the network has currently indicated the registration of the ME. Location information elements <lac> and <ci> are returned only when

<n>=2 and ME is registered on the network. +CREG: <n>,<stat>[,<lac>,<ci>[,<Act>]]

OK

If there is any error related to ME functionality:

+CME ERROR: <err>

Write Command

AT+CREG[=<n>]

Response TA controls the presentation of an unsolicited result code +CREG: <stat> when <n>=1 and there is a change in the ME network registration status. OK

Maximum Response Time

300ms

EC25&EC21 AT Commands Manual

Example

AT+COPS=? //List all current network operators

+COPS: (1,"CHN-UNICOM","UNICOM","46001",2),(1,"CHN-UNICOM","UNICOM","46001",0),(2,"CHN-UNICO M","UNICOM","46001",7),(1,"46011","46011","46011",7),(3,"CHINA MOBILE","CMCC","46000",0),,(0,1,2,3,4),(0,1,2)

OK

AT+COPS? //Query the currently selected network operator

+COPS: 0,0,“CHN-UNICOM”,7

OK

6.2. AT+CREG Network Registration

The Read Command returns the network registration status. The write command sets whether or not to present URC.

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Reference 3GPP TS 27.007

<n> 0 Disable network registration unsolicited result code

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

2 Enable network registration unsolicited result code with location information:

+CREG: <stat>[,<lac>,<ci>[,<Act>]] <stat> 0 Not registered. ME is not currently searching a new operator to register to 1 Registered, home network 2 Not registered, but ME is currently searching a new operator to register to 3 Registration denied 4 Unknown

5 Registered, roaming

<lac> String type. Two bytes location area code in hexadecimal format <ci> String type. 16-bit (GSM) or 28-bit (UMTS/LTE) cell ID in hexadecimal format <Act> Access technology selected

0 GSM 2 UTRAN 3 GSM W/EGPRS 4 UTRAN W/HSDPA 5 UTRAN W/HSUPA 6 UTRAN W/HSDPA and HSUPA 7 E-UTRAN

EC25&EC21 AT Commands Manual

Parameter

Example

AT+CREG=1

OK

+CREG: 1 //URC reports that ME has registered on network

AT+CREG=2 //Activate extended URC mode

OK

+CREG: 1,“D509”,”80D413D”,7 //URC reports that operator has found location area code

and cell ID

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AT+CSQ Signal Quality Report

Test Command AT+CSQ=?

Response The Test Command returns values supported by the TA.

+CSQ: (list of supported <rssi>s),(list of supported <ber>s)

OK

Execution Command

AT+CSQ

Response The Execution Command returns received signal strength indication <rssi> and channel bit error rate <ber> from the ME.

+CSQ: <rssi>,<ber>

OK +CME ERROR: <err>

Maximum Response Time

300ms

Reference 3GPP TS 27.007

<rssi> 0 -113dBm or less 1 -111dBm

2...30 -109dBm... -53dBm 31 -51dBm or greater 99 Not known or not detectable 100 -116dBm or less 101 -115dBm

102...190 -114dBm...-26dBm 191 -25dBm or greater 199 Not known or not detectable 100~199 Extended to be used in TD-SCDMA indicating received signal code

power (RSCP)

<ber> Channel bit error rate (in percent)

0...7 As RXQUAL values in the table in 3GPP TS 45.008 subclause 8.2.4 99 Not known or not detectable

EC25&EC21 AT Commands Manual

6.3. AT+CSQ Signal Quality Report

The command indicates the received signal strength <rssi> and the channel bit error rate <ber>.

Parameter

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After using network related commands such as AT+CCWA and AT+CCFC, users are advised to wait for 3s before entering AT+CSQ. This is recommended to ensure that any network access required for the preceding command has been finished.

AT+CPOL Preferred Operator List

Test Command AT+CPOL=?

Response

+CPOL: (list of supported <index>s),(list of supported <format>s)

OK

Read Command AT+CPOL?

Response Query the list of preferred operators:

+CPOL: <index>,<format>,<oper>[,<GSM>,<GSM_compact,<UTR AN>,<E-UTRAN>] <index>,<format>,<oper>[,<GSM>,<GSM_compact,<UTR AN>,<E-UTRAN>] […]

OK

Write Command

AT+CPOL=<index>[,<format>[,<oper> [<GSM>,<GSM_compact>,<UTRAN>, <E-UTRAN>]]]

Response Edit the list of preferred operators:

OK ERROR

NOTE

EC25&EC21 AT Commands Manual

Example

AT+CSQ=?

+CSQ: (0-31,99),(0-7,99)

OK

AT+CSQ

+CSQ: 28,99 //The current signal strength indication is 28 and channel bit error rate is 99

OK

6.4. AT+CPOL Preferred Operator List

The command edits and queries the list of preferred operators.

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The access technology selection parameters <GSM>, <GSM_compact>, <UTRAN> and <E-UTRAN> are required for SIM cards or UICC‟s containing PLMN selector with access technology.

If the <index> is given but the <operator> is left out, the entry is deleted.

Maximum Response Time

300ms

Reference 3GPP TS 27.007

<index> Integer type. The order number of operator in the (U)SIM preferred operator list <format> 0 Long format alphanumeric <oper>

1 Short format alphanumeric <oper> 2 Numeric <oper>

<oper> String type. <format> indicates the format is alphanumeric or numeric (see

AT+COPS)

<GSM> GSM access technology

0 Access technology is not selected 1 Access technology is selected

<GSM_compact> GSM compact access technology

0 Access technology is not selected 1 Access technology is selected

<UTRAN> UTRAN access technology

0 Access technology is not selected 1 Access technology is selected

<E-UTRAN> E-UTRAN access technology

0 Access technology is not selected 1 Access technology is selected

NOTE

EC25&EC21 AT Commands Manual

Parameter

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AT+COPN Read Operator Names

Test Command AT+COPN=?

Response

OK

Execution Command

AT+COPN

Response

+COPN: <numeric1>,<alpha1> [+COPN: <numeric2>,<alpha2> […]]

OK +CME ERROR: <err>

Maximum Response Time

Depends on the number of operator names.

Reference 3GPP TS 27.007

<numericn> String type. Operator in numeric format (see AT+COPS) <alphan> String type. Operator in long alphanumeric format (see AT+COPS)

AT+CTZU Automatic Time Zone Update

Test Command

AT+CTZU=?

Response

+CTZU: (0,1,3)

OK

Write Command

AT+CTZU=<onoff>

Response

OK ERROR

Read Command AT+CTZU?

Response

+CTZU: <onoff>

EC25&EC21 AT Commands Manual

6.5. AT+COPN Read Operator Names

The command returns the list of operator names from the ME. Each operator code <numericn> that has an alphanumeric equivalent <alphan> in the ME memory is returned.

Parameter

6.6. AT+CTZU Automatic Time Zone Update

The Write Command enables and disables automatic time zone update via NITZ. The configuration is stored to NV automatically.

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<onoff> Integer type. The mode of automatic time zone update. 0 Disable automatic time zone update via NITZ.

1 Enable automatic time zone update via NITZ 3 Enable automatic time zone update via NITZ and update LOCAL time to RTC

OK

Maximum Response Time

300ms

Reference 3GPP TS 27.007

AT+CTZR Time Zone Reporting

Test Command

AT+CTZR=?

Response

+CTZR: (0-2)

OK

EC25&EC21 AT Commands Manual

Parameter

Example

AT+CTZU?

+CTZU: 0

OK

AT+CTZU=?

+CTZU: (0,1,3)

OK

AT+CTZU=1

OK

AT+CTZU?

+CTZU: 1

OK

6.7. AT+CTZR Time Zone Reporting

This command controls the time zone reporting of changed event. If reporting is enabled, the MT returns the unsolicited result code +CTZV: <tz> or +CTZE: <tz>,<dst>,<time> whenever the time zone is changed. The configuration is stored to NV automatically.

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Write Command

AT+CTZR=<reporting>

Response

OK ERROR

Read Command AT+CTZR?

Response

+CTZR: <reporting>

OK

Maximum Response Time

300ms

Reference 3GPP TS 27.007

<reporting> Integer type. The mode of time zone reporting

0 Disable time zone reporting of changed event 1 Enable time zone reporting of changed event by unsolicited result code:

+CTZV: <tz>

2 Enable extended time zone reporting by unsolicited result code:

+CTZE: <tz>,<dst>,<time>

<tz> String type. The sum of the local time zone (difference between the local time and GMT

is expressed in quarters of an hour) plus daylight saving time. The format is “±zz”, expressed as a fixed width, two-digit integer with the range -48 ... +56. To maintain a fixed width, numbers in the range -9 ... +9 are expressed with a leading zero, e.g. “-09”, “+00” and “+09”.

<dst> Integer type. Indicates whether <tz> includes daylight savings adjustment

0 <tz> includes no adjustment for daylight saving time 1 <tz> includes +1 hour (equals 4 quarters in <tz>) adjustment for daylight saving

time

2 <tz> includes +2 hours (equals 8 quarters in <tz>) adjustment for daylight saving

time

<time> String type. The local time. The format is “YYYY/MM/DD,hh:mm:ss”, expressed as

integers representing year (YYYY), month (MM), date (DD), hour (hh), minute (mm) and second (ss). This parameter can be provided by the network when delivering time zone information and will be presented in the unsolicited result code of extended time zone reporting if provided by the network.

EC25&EC21 AT Commands Manual

Parameter

Example

AT+CTZR=2

OK

AT+CTZR?

+CTZR: 2

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AT+QLTS Obtain the Latest Time Synchronized Through Network

Test Command

AT+QLTS=?

Response

+QLTS: list of supported <mode>s OK

Execution Command AT+QLTS

Response Execution Command returns the latest time that has been synchronized through network:

+QLTS: <time>,<dst>

OK

Write Command AT+QLTS=<mode>

Response

+QLTS: <time>,<dst>

OK ERROR

If error is related to ME functionality +CME ERROR: <err>

Maximum Response Time

300ms

<mode> Query network time mode 0 Query the latest time that has been synchronized through network 1 Query the current GMT time calculated from the latest time that has been

synchronized through network

2 Query the current LOCAL time calculated from the latest time that has been

synchronized through network

<time> String type value. Format is "yy/MM/dd,hh:mm:ss±zz", where characters indicate year (two

last digits), month, day, hour, minutes, seconds and time zone (indicates the difference, expressed in quarters of an hour, between the local time and GMT; range -48...+48). E.g. 6th of May 2004, 22:10:00 GMT+2 hours equals to “04/05/06,22:10:00+08”

<dst> Daylight saving time.

EC25&EC21 AT Commands Manual

OK

+CTZE: “+32”,0,“2017/11/04,06:51:13” //<reporting> is 2

6.8. AT+QLTS Obtain the Latest Time Synchronized Through Network

The command is used to obtain the latest time synchronized through network.

Parameter

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If the time has not been synchronized through network, the command will return a null time string: +QLTS:

""

AT+QNWINFO Query Network Information

Test Command AT+QNWINFO=?

Response

OK

Execution Command

AT+QNWINFO

Response

+QNWINFO: <Act>,<oper>,<band>,<channel>

NOTE

EC25&EC21 AT Commands Manual

Example

AT+QLTS=? //Query supported network time modes

+QLTS: (0-2)

OK

AT+QLTS //Query the latest time synchronized through network

+QLTS: "2017/10/13,03:40:48+32,0" OK

AT+QLTS=0 //Query the latest time synchronized through network. It offers the same

function as Execution Command AT+QLTS.

+QLTS: "2017/10/13,03:40:48+32,0"

OK

AT+QLTS=1 //Query the current GMT time calculated from the latest time that has been

synchronized through network

+QLTS: "2017/10/13,03:41:22+32,0"

OK

AT+QLTS=2 //Query the current LOCAL time calculated from the latest time that has been

synchronized through network

+QLTS: "2017/01/13,11:41:23+32,0"

OK

6.9. AT+QNWINFO Query Network Information

The command indicates network information such as access technology selected, the operator and the band selected.

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OK

Maximum Response Time

300ms

<Act> String type. The access technology selected “NONE” “CDMA1X” “CDMA1X AND HDR” “CDMA1X AND EHRPD” “HDR” “HDR-EHRPD” “GSM” “GPRS” “EDGE” “WCDMA” “HSDPA” “HSUPA” “HSPA+” “TDSCDMA” “TDD LTE” “FDD LTE”

<oper> String type. The operator in numeric format <band> String type. The band selected

“CDMA BC0” – “CDMA BC19” “GSM 450” “GSM 480” “GSM 750” “GSM 850” “GSM 900” “GSM 1800” “GSM 1900” “WCDMA 2100” “WCDMA 1900” “WCDMA 1800” “WCDMA 1700 US” “WCDMA 850” “WCDMA 800” “WCDMA 2600” “WCDMA 900” “WCDMA 1700 JAPAN” “WCDMA 1500”

EC25&EC21 AT Commands Manual

Parameter

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“WCDMA 850 JAPAN” “LTE BAND 1” – “LTE BAND 43” “TDSCDMA BAND A” “TDSCDMA BAND B” “TDSCDMA BAND C” “TDSCDMA BAND D” “TDSCDMA BAND E” “TDSCDMA BAND F”

<channel> Integer type. Channel ID

AT+QSPN Display the Name of Registered Network

Test Command

AT+QSPN=?

Response

OK

Execution Command AT+QSPN

Response

+QSPN: <FNN>,<SNN>,<SPN>,<alphabet>,<RPLMN>

OK

Reference

<SPN> Service provider name <alphabet> Alphabet of full network name and short network name

0 GSM 7-bit default alphabet 1 UCS2

<RPLMN> Registered PLMN <FNN> Full network name <SNN> Short network name

EC25&EC21 AT Commands Manual

Example

AT+QNWINFO=?

OK

AT+QNWINFO

+QNWINFO: "FDD LTE",46001,"LTE BAND 3",1650

OK

6.10. AT+QSPN Display the Name of Registered Network

Parameter

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1. If <alphabet> is 0, <FNN> and <SNN> will be shown in GSM 7 bit default alphabet string.

2. If <alphabet> is 1, <FNN> and <SNN> will be shown in UCS2 hexadecimal string.

NOTES

EC25&EC21 AT Commands Manual

Example

AT+QSPN //Query the EONS information of RPLMN

+QSPN: "CHN-UNICOM","UNICOM","",0,"46001" OK

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1. Any additional commands on the same command line are ignored.

2. This command may be aborted generally by receiving a character during execution. The aborting is

not possible during some states of connection establishment such as handshaking.

3. See also ATX.

ATA Answer an Incoming Call

Execution Command

ATA

Response TA sends off-hook to the remote station. Response in case of data call, if successfully connected: CONNECT <text> And TA switches to data mode. Note: <text> outputs only when <value> is greater than 0 in ATX <value> parameter setting. When TA returns to command mode after call release:

OK

Response in case of voice call, if successfully connected:

OK

Response if no connection:

NO CARRIER

Maximum Response Time

90s, determined by network.

Reference V.25ter

NOTES

EC25&EC21 AT Commands Manual

7 Call Related Commands

7.1. ATA Answer an Incoming Call

The command connects the module to an incoming voice or data call indicated by a RING URC.

Example

RING //A voice call is ringing

AT+CLCC

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ATD Mobile Originated Call to Dial a Number

Execution Command

ATD<n>[<mgsm>][;]

Response This command can be used to set up outgoing voice, data or fax calls. It also serves to control supplementary services.

If no dial tone and (parameter setting ATX2 or ATX4):

NO DIALTONE

If busy and (parameter setting ATX3 or ATX4): BUSY

If a connection cannot be established:

NO CARRIER

If connection is successful and non-voice call. CONNECT <text> And TA switches to data mode. Note: <text> outputs only when <value> is greater than 0 in ATX<value> parameter setting. When TA returns to command mode after call release:

OK

If connection is successful and voice call:

OK

Maximum Response Time

5s, determined by network (AT+COLP=0).

Reference V.25ter

EC25&EC21 AT Commands Manual

+CLCC: 1,0,0,1,0,“”,128 //PS call in LTE mode +CLCC: 2,1,4,0,0,“02154450290”,129 //Incoming call

OK

ATA //Accept the voice call with ATA

OK

7.2. ATD Mobile Originated Call to Dial a Number

The command can be used to set up outgoing voice and data calls. Supplementary services can also be controlled with this command.

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1. This command may be aborted generally by receiving an ATH command or a character during

execution. The aborting is not possible during some states of connection establishment such as handshaking.

2. Parameter “I” and “i” can be omitted only when there is no “*” or “#” code within the dial string.

3. See ATX command for setting result code and call monitoring parameters.

4. Responses returned after dialing with ATD

For voice call, two different responses mode can be determined. TA returns “OK” immediately either after dialing was completed or after the call was established. The setting is controlled by AT+COLP. Factory default is AT+COLP=0, which causes the TA to return “OK” immediately after dialing was completed. Otherwise TA will return “OK”, “BUSY”, “NO DIAL TONE”, or “NO CARRIER”.

5. Using ATD during an active voice call:

 When a user originates a second voice call while there is already an active voice call, the first

call will be automatically put on hold.

 The current states of all calls can be easily checked at any time by using AT+CLCC command.

<n> String of dialing digits and optionally V.25ter modifiers Dialing digits: 0-9, * , #, +, A, B, C Following V.25ter modifiers are ignored: ,(comma), T, P, !, W, @ <mgsm> String of GSM modifiers:

I Actives CLIR (Disable presentation of own number to called party) i Deactivates CLIR (Enable presentation of own number to called party)

G Activates closed user group invocation for this call only

g Deactivates closed user group invocation for this call only

<;> Only required to set up voice call, return to command mode

NOTES

EC25&EC21 AT Commands Manual

Parameter

Example

ATD10086; //Dialing out the party‟s number

OK

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ATH Disconnect Existing Connection

Execution Command

ATH[n]

Response Disconnect existing call by local TE from command line and terminate the call.

OK

Maximum Response Time

90s, determined by network.

Reference V.25ter

<n> 0 Disconnect existing call from command line and terminate the call

AT+CVHU Voice Hang up Control

Test Command

AT+CVHU=?

Response

+CVHU: (list of supported <mode>s)

OK

Read Command AT+CVHU?

Response

+CVHU: <mode>

OK

Write Command

AT+CVHU=<mode>

Response

OK ERROR

Maximum Response Time

300ms

Reference 3GPP TS 27.007

EC25&EC21 AT Commands Manual

7.3. ATH Disconnect Existing Connection

The command disconnects circuit switched data calls or voice calls. AT+CHUP is also used to disconnect the voice call.

Parameter

7.4. AT+CVHU Voice Hang up Control

The command controls whether ATH can be used to disconnect the voice call.

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<mode> 0 ATH can be used to disconnect the voice call. 1 ATH is ignored but OK response is returned.

AT+CHUP Hang up Call

Test Command

AT+CHUP=?

Response

OK

Execution Command

AT+CHUP

Response

OK ERROR

Maximum Response Time

90s, determined by network.

Reference 3GPP 27.007

+++ Switch from Data Mode to Command Mode

Execution Command

+++

Response This command is only available when TA is in data mode. The “+++” character sequence causes the TA to cancel the data flow over the AT interface and switch to command mode. This allows entering AT command while maintaining the data connection with the remote server or, accordingly, the GPRS

EC25&EC21 AT Commands Manual

Parameter

7.5. AT+CHUP Hang up Call

The command cancels all voice calls in the state of Active, Waiting and Held. For data connections, use

ATH.

Example

RING //Incoming call

AT+CHUP //Hang up the call

OK

7.6. +++ Switch from Data Mode to Command Mode

The +++ character sequence causes the module to switch from data mode to command mode. It allows inputting AT commands while maintaining the data connection with the remote device.

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LTE Module Series

1. To prevent the +++ escape sequence from being misinterpreted as data, the following sequence

should be followed:

 Do not input any character within 1s before inputting +++.  Input +++ within 1s, and no other characters can be inputted during the time.  Do not input any character within 1s after +++ has been inputted.  Switch to command mode successfully; otherwise return to Step 1.

2. To return back to data mode from command mode, please enter ATO.

3. Another way to change to command mode is through DTR level change, and please refer to AT&D

command for details.

connection.

OK

Maximum Response Time

300ms

Reference V.25ter

ATO Switch from Command Mode to Data Mode

Execution Command

ATO[n]

Response TA resumes the connection and switches back to data mode from command mode. If connection is not successfully resumed:

NO CARRIER

If connection is successfully resumed, TA returns to data mode from command mode

CONNECT <text>

Maximum Response Time

300ms

Reference V.25ter

NOTES

EC25&EC21 AT Commands Manual

7.7. ATO Switch from Command Mode to Data Mode

The command resumes the connection and switches back from command mode to data mode.

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When TA returns to data mode from command mode successfully, CONNECT <text> is returned. Please note that <text> outputs only when <value> is greater than 0 in ATX<value> parameter setting.

If <n> is set too high, the calling party may hang up before the call is answered automatically.

<n> 0 Switch from command mode to data mode

ATS0 Set Number of Rings before Automatically Answering Call

Read Command

ATS0?

Response

<n>

OK

Write Command

ATS0=<n>

Response This parameter setting determines the number of rings before auto-answer. OK

Maximum Response Time

300ms

Reference V.25ter

<n> 0 Automatic answering is disabled 1-255 Enable automatic answering on the ring number specified

NOTE

EC25&EC21 AT Commands Manual

Parameter

7.8. ATS0 Set Number of Rings before Automatically Answering Call

The command controls automatic answering mode for the incoming calls.

Parameter

Example

ATS0=3 //Set three rings before automatically answering a call

OK

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ATS6 Set Pause before Blind Dialing

Read Command

ATS6?

Response

<n>

OK

Write Command

ATS6=<n>

Response OK

Maximum Response Time

300ms

Reference V.25ter

<n> 0-2-10 Number of seconds to wait before blind dialing

ATS7 Set Time to Wait for Connection Completion

Read Command

ATS7?

Response

<n>

OK

EC25&EC21 AT Commands Manual

RING //A call is coming

RING

RING //Automatically answering the call after three rings

7.9. ATS6 Set Pause before Blind Dialing

The command is implemented for compatibility reasons only, and has no effect.

Parameter

7.10. ATS7 Set Time to Wait for Connection Completion

The command specifies the amount of time (unit: second) to wait for the connection completion in case of answering or originating a call. If no connection is established during the time, the module disconnects from the line.

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Write Command

ATS7=<n>

Response This parameter setting determines the amount of time (unit: second) to wait for the connection completion in case of answering or originating a call. OK

Maximum Response Time

300ms

Reference V.25ter

<n> 0 Disabled

1-255 Number of seconds to wait for connection completion. Unit: second.

ATS8 Set the Time to Wait for Comma Dial Modifier

Read Command

ATS8?

Response

<n>

OK

Write Command

ATS8=<n>

Response OK

Maximum Response Time

300ms

Reference V.25ter

<n> 0 No pause when comma encountered in dial string 1-2-255 Number of seconds to wait for comma dial modifier

EC25&EC21 AT Commands Manual

Parameter

7.11. ATS8 Set the Time to Wait for Comma Dial Modifier

The command is implemented for compatibility reasons only, and has no effect.

Parameter

EC25&EC21_AT_Commands_Manual 97 / 231

LTE Module Series

ATS10 Set Disconnection Delay after Indicating the Absence of Data Carrier

Read Command

ATS10?

Response

<n>

OK

Write Command

ATS10=<n>

Response This parameter setting determines the amount of time (unit: tenths of a second) during which the TA will remain connected in absence of a data carrier. If the data carrier is once more detected before disconnection, the TA remains connected. OK

Maximum Response Time

300ms

Reference V.25ter

<n> 1-15-254 Number of tenths of seconds to wait before disconnecting after UE has indicated

the absence of received line signal

AT+CBST Select Bearer Service Type

Test Command AT+CBST=?

Response

+CBST: (list of supported <speed>s),(list of supported <name>s),(list of supported <ce>s)

OK

Read Command

Response

EC25&EC21 AT Commands Manual

7.12. ATS10 Set Disconnection Delay after Indicating the Absence of Data Carrier

The command determines the amount of time (unit: tenths of a second) during which the UE remains connected in absence of a data carrier.

Parameter

7.13. AT+CBST Select Bearer Service Type

The Write Command selects the bearer service <name>, the data rate <speed> and the connection element <ce> to be used when data calls are originated.

EC25&EC21_AT_Commands_Manual 98 / 231

LTE Module Series

AT+CBST?

+CBST: <speed>,<name>,<ce>

OK

Write Command

AT+CBST=[<speed>[,<name>[,<ce>]]]

Response TA selects the bearer service <name> with data rate <speed>, and the connection element <ce> to be used when data calls are originated. OK

Maximum Response Time

300ms

Reference 3GPP TS 27.007

<speed> 0 Automatic speed selection

7 9600 bps (V.32) 12 9600 bps (V.34) 14 14400 bps (V.34) 16 28800 bps (V.34) 17 32000 bps (V.34) 39 9600 bps (V.120) 43 14400 bps (V.120) 48 28800 bps (V.120) 51 56000 bps (V.120) 71 9600 bps (V.110) 75 14400 bps (V.110) 80 28800 bps (V.110 or X.31 flag stuffing) 81 38400 bps (V.110 or X.31 flag stuffing) 83 56000 bps (V.110 or X.31 flag stuffing; this setting can be used in conjunction with

asynchronous non-transparent UDI or RDI service in order to get FTM)

84 64000 bps (X.31 flag stuffing; this setting can be used in conjunction with

asynchronous non-transparent UDI service in order to get FTM) 116 64000 bps (bit transparent) 134 64000 bps (multimedia)

<name> 0 Asynchronous Modem 1 Synchronous Modem 4 Asynchronous Modem (RDI) <ce> 0 Transparent 1 Non-transparent

EC25&EC21 AT Commands Manual

Parameter

EC25&EC21_AT_Commands_Manual 99 / 231

Quectel EC25, EC21 Command Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

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

3.6. AT+QRIR Restore RI Behavior to Inactive

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="urc/ri/ring" RI Behavior When RING URC is Presented

4.3.14. AT+QCFG="urc/ri/smsincoming" RI Behavior When Incoming SMS URCs are Presented

4.3.15. AT+QCFG="urc/ri/other" RI Behavior When Other URCs are Presented

4.3.16. AT+QCFG="risignaltype" RI Signal Output Carrier

4.3.17. AT+QCFG="urc/delay" Delay URC Indication

4.3.18. AT+QCFG="urc/cache" URC Cache Function

4.3.19. AT+QCFG="tone/incoming" Ring tone Function

4.4. AT+QINDCFG URC Indication Configuration

5 (U)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 (U)SIM Access

5.6. AT+CRSM Restricted (U)SIM Access

5.7. AT+QCCID Show ICCID

5.8. AT+QPINC Display PIN Remainder Counter