Atecho Command for Suppressing the Echo, At+Cmic?

HUAWEI MG323 GSM M2M Module
AT Command Interface Specification	Commands for Audio Control

Parameter description

<level>: integer; indicates the microphone gain level; value range: –12 to +13;

Default value: 0.

z–12: minimum gain

z12: maximum gain

z13: microphone muted

15.2.2Querying the Current Microphone Gain Level

Read	AT+CMIC?
command
Function	Queries the current microphone gain level
Response	z In case of successful execution:
	<CR><LF>+CMIC: <level><CR><LF>
	<CR><LF>OK<CR><LF>

zIn case of an error: <CR><LF>ERROR<CR><LF>

15.2.3Setting the Microphone Gain Level

Write	AT+CMIC=<level>
command
Function	Sets the microphone gain level
Response	z In case of successful execution: <CR><LF>OK<CR><LF>
	z In case of an error: <CR><LF>ERROR<CR><LF>
	z In case of an error related to the MT: <CR><LF> +CME ERROR:
	<err><CR><LF>

Note:

This command applies to both audio channels, but it can be executed only before a voice call is initiated.

15.3 AT^ECHO - Command for Suppressing the Echo

The AT^ECHO command suppresses the echo.

Issue 02 (2010-11-23)	Huawei Proprietary and Confidential	198
	Copyright © Huawei Technologies Co., Ltd.

Page 215

Image 215

Huawei MG323 manual Atecho Command for Suppressing the Echo, Querying the Current Microphone Gain Level, At+Cmic?

Contents

AT Command Interface Specification No Warranty Version Date Chapter Descriptions About This DocumentHistory Contents Commands for Status Control Commands for Security Control Commands for Call Control Commands for Network Services 110 135 156 160 182 204 Figures Tables 142 Product Description Content DescriptionOverall Description Instructions for Use Overview of AT Command InterfacesDescription of AT Commands A command or a response Prefixed with + Types of AT Commands Command Format Description 1Format of a basic command Command Command Format Description Type 3Types and formats of extended and vendor-defined commands Rules for Running AT Commands Abort Attributes of AT Commands Chapter Describes Organization of This Document Chapter Describes AT&F Command for Restoring Factory Settings Commands for Configuration AT&D AT+CMERAT+CIND AT\Q AT&C Examples of Results Returned by the &V Command AT&V Command for Querying the Current ConfigurationExecution command AT Commands AT&W Command for Storing the Current ConfigurationError errCRLF ATS3 ATS4 ATS5 ATQ Command for Controlling the Return of Execution ResultsATS7 AT+CR Ring ATV Command for Setting the Formats of ME ResponsesString Format Numeric Meaning Connect Busy ATZ Command for Restoring the Settings Saved by the UserATE Command for Setting Echo Error Fun Function Description Remarks AT+CFUN Command for Setting the Work ModeTest command Querying the Supported Work Modes URC 7Relations between work modes and servicesSetting Value Setvice Write Reading the Current Work ModeSetting the Work Mode Read AT+CFUN? command Examples Atsmso Command for System ShutdownSetting System Shutdown Execution Atsmso command AT+GCAP=? Execution AT+GCAP commandName string for example, +CGSM AT+GCAP +GCAP +CGSM Test AT+CMEE=? command 11 AT+CMEE Command for Setting Terminal Error ReportingQuerying the Error Reporting Mode Supported by the Terminal Reading the Terminal Error Reporting Mode Querying the Character Set Supported by the TE 12 AT+CSCS Command for Setting the TE CharacterSetting the Terminal Error Reporting Mode Test AT+CSCS=? command Value Setting the Character Set of the TEDefault value UCS2 Reading the Character Set of the TE Str Value Atscfg Extended Command for Setting Configuration ItemsTest ATSCFG=? command Value Description Read ATSCFG? command Sysstart Command for Unsolicitedly Reporting Module StartupReading the Settings for Configuration Items Setting Configuration Items URC Crlfshutdowncrlf Test AT+CMER=? command Commands for Status ControlAT+CMER Command for Setting Event Reporting Querying the Supported Settings for Event Reporting Setting the Event Reporting Mode AT+CIND Command for Controlling Indication EventsReading the Current Settings for Event Reporting IndDescr IndValue Test AT+CIND=? command Reading the Current Indication Status Setting Whether to Report Indication EventsRead AT+CIND? command AT+CIND=? Atsind Extended Command for Controlling Indication EventsQuerying the Supported Report Events Sysstart IndDescr IndValue Read Reading the Current Event Reporting Mode Crlfsind AT+WS46 Command for Selecting a Radio NetworkTest AT+WS46=? command Querying the Supported Radio Networks Reading the Current Radio Network +CIEV Command for Indicating the Status ChangeSetting the Radio Network to Be Registered Read AT+WS46? command AT\Q command sets the flow control mode Commands for Serial Port ControlAT\Q Command for Enabling Software or Hardware Flow Control AT&C Command for Setting the DCD Usage State AT&S Command for Setting the DSR Usage State AT&D Command for Setting the DTR Usage State Querying the Supported Baud Rates of the DTE-DCE AT+IPR Command for Setting the Baud RateTest AT+IPR=? command Read AT+IPR? command Test AT+CMUX=? command AT+CMUX Command for Setting MultiplexingSetting the Baud Rate of the DTE-DCE Querying the Supported Settings for Multiplexing Issue 02 Huawei Proprietary and Confidential Command Reading the Current Settings for MultiplexingSetting Multiplexing Case of an error CRLF+CME Error errCRLF Reading the Password Entry Request Commands for Security ControlAT+CPIN Command for PIN Management Checking Whether a PIN Management Command Exists Example Enter the PIN code for unlocking Responding to the Password Entry Request AT+CPIN? +CPIN SIM PIN AT+CLCK Command for Locking and Unlocking the DeviceChecking the Devices Supported by This Command AT+CLCK command locks and unlocks the device Locking and Unlocking the Device +CLCK AT+CPWD Command for Modifying the PasswordAT+CPWD command modifies the password AT+CLCK=SC,2 AT+CPWD=? Modifying the PasswordTest +CLCK0 Example Run AT+CPWD to modify the PIN codeCard ATI Command for Querying the Product Information Commands for Identification ATI4 Huawei MG323 AT+CGMI/GMI Command for Querying the Vendor InformationATI +GCAP +CGSM Query the vendor information AT+CGMM/GMM Command for Querying the Product ModelAT+CGMM/GMM command queries the product model Querying the Vendor Information Request MG323 Querying the Product Model Number RequestExample Query the product model number AT+CGMM 11.810.01.00.00 OK AT+GMR Querying the Software Version NumberExample Query the software version number AT+CGMR Char AT+CGSN/GSN Command for Querying the ImeiChecking Whether the Command for Querying the Imei Exists Querying the Imei Querying the Imsi AT+CIMI Command for Querying the ImsiChecking Whether the Command for Querying the Imsi Exists Test AT+CIMI=? command 46009755200774 Example Query the ImsiAT+CIMI Case of failed link establishment Crlfno Carriercrlf Commands for Call ControlATD Command for Originating a Call Carriercrlf ATD*99# Command for Requesting the Gprs ServiceATD*98# Command for Requesting the Gprs IP Service Crlfconnectcrlf ATH Command for Hanging Up the ConnectionExecution ATHn command Crlfno Carriercrlf ATA Command for Answering a Call or Data ServicesReading the Settings of the Automatic Answer Data Services Crlfokcrlf Reading the Set Waiting Duration Request Setting Unsolicitedly Answering Data Services Querying the Supported RLP Parameters Setting the Waiting DurationTest AT+CRLP=? command AT+CBST Command for Setting the Bearer Service Type Test AT+CBST=? command Querying the Supported Bearer Service TypesQuerying the Current Bearer Service Type Setting the Bearer Service Type Execution ATOn command 10 +++ Command for Switching Data Mode to Command ModeATO Command for Switching Command Mode to Data Mode Execution +++ Command Checking Whether AT+CHUP Hang-up Is Supported 12 AT+CHUP Command for Hanging Up Data Services13 AT+CR Command for Setting the Service Reporting Mode 12.2 AT+CHUP Command for Hanging Up Connect Querying the Supported Settings for Service ReportingReading the Current Settings for Service Reporting Mode integer Default value disables service reporting AT+CRC=? 14 AT+CRC Command for Setting the Cell Result CodesSetting Service Reporting Querying the Supported Settings for the Cell Result Codes AT+VTS command sends the Dtmf tone 15 AT+VTS Command for Sending the Dtmf ToneQuerying the Current Settings for the Cell Result Codes Settings the Cell Result Codes AT+CLIP=? Querying the Settings Supported by the AT+CLIP CommandSending the Dtmf Tone Supported nsCRLF MCRLF Reading the Settings of the Clip ServiceSetting the Clip 16.4 +CLIP Command for Unsolicitedly Reporting the CLI URC Crlfringcrlf Ring Command for Unsolicitedly Reporting Incoming CallsType character string. -3 lists the values 3type values AT+COPN command queries the operator name Commands for Network ServicesAT+COPN Command for Querying the Operator Name Checking Whether This Command Is Supported AT+COPN=? AT+COPS Command for Selecting OperatorsExecution AT+COPN command Reading the List of Operators Crlfokcrlf AT+COPS? Setting the Current Operator InformationExample Obtain the list of available operator information AT+COPS=? Case of an error during command execution AT+CREG Command for Querying Network RegistrationChecking the Parameter Range Supported by This Command AT+CREG command queries network registration Querying the Current Status of Network Registration Setting the Status of Network Registration AT+CREG=2 AT+CSQ Command for Querying the Signal QualityAT+CREG? CRLF+CSQ list of supported rssis,list of supported bersCRLF AT+CSQ=? Atsmonc Command for Querying the Cell InformationQuerying the Current Signal Quality Example Query the parameter range supported by the command Atsmonc Checking Whether This Command Is AvailableTest ATSMONC=? command Querying the Cell Information ATSMOND=? ATSMONC=?Example Query the current cell information Atsmonc Smonc RSSI,BER Execution Atsmond command ATMONI=? BER bit error rate 0-7Atsmond Parameter values set for the ME in different states 1List of parameters for the serving cellParameter Description NCC BCC PWR ME has accessed the cell and registered with the networkServing cell Dedicated Channel MCC MNC LAC Crlfcrlfokcrlf Execution Atmoni command ATMONI=1 ATMONI=?Atmoni DBm Q ChMod Atmonp Command for Monitoring Idle Neighbor CellsPWR ATMONP=? Case of an error related to the MT during commandExecution CRLF+CME Error errCRLF Obtaining the Monitoring Information About Neighbor Cells Execution Atmonp command Monp ATMONP=? Chann rs DBm MCC MNC BCC 712 460 001 735 705 Example Query the information about neighbor cellsAtmonp ATMONP=1 Bcch Atsmong Command for Gprs Monitoring712 20 -73 460 RAC PbcchPAT NOM Crlfbcch G Pbcch PAT MCC MNC NOM TA Execution Atsmong command Smong 1,1-100 Example Obtain the parameter rangeATSMONG=? Bcch Pbcch PAT MCC MNC NOM RAC AtsmongBcch Pbcch PAT MCC MNC NOM TA RAC ATSMONG=1,1 552 460 255 Atsplm Command for Reading the Plmn ListAtsplm command reads the Plmn list Atsplm Execution Atsplm commandQuerying the List of Operator Names Saved on the ME Example Query the list of operators saved on the ME Default value operator information oper in numeric format AT+CPOL command sets the list of preferred operators Example Add a preferred operator AT+CPOL=1,2,46000 Setting the List of Preferred OperatorsQuerying the List of Preferred Operators Operator indicates an operator name in numeric format Indexa sequence number range supported by the SIM card Atsplr Command for Querying Preferred OperatorsAtsplr command queries preferred operators Querying the Current Range of Preferred Operators ATSPLR=1,2 Atsplw Command for Writing Preferred Operators Writing the Information About Preferred Operators 14 AT+CNUM Command for Querying Subscriber Numbers CRLF+CNUM Execution AT+CNUM commandQuerying the Msisdn Related to Subscribers AT+CPBS=ON AT+CPBW=1 AT+CNUM AT+CPBS=ONAT+CPBW=1,13903702769,145 Query the Msisdn AT+CNUM AT+CGACT=? Commands for Data ServicesQuerying the Supported Status of PDP Context AT+CGACT? Setting the Activation State of the PDP ContextCase of an error related to the MT CRLF+CME Reading the Activation State of the PDP Context AT+CGACT? Checking the Supported Gprs Service StateAT+CGACT? +CGACT 1,0 AT+CGACT=1,1 AT+CGATT=0 Querying the Current Gprs Service StateSetting the Gprs Service State AT+CGATT? AT+CGEREP=? AT+CGEREP Command for Reporting Gprs EventsChecking the Supported Gprs Event Reporting Mode URC Reading the Gprs Event Reporting ModeSetting the Gprs Event Reporting Mode URC +CGEV MT Detach AT+CGDATA Command for Entering the Data ModeURC +CGEV NW Detach Network requests for Gprs detachment AT+CGDATA=? Case of failed command executionEstablishing Communication Between the TE and Network Case of failed communication establishment Crlfno +CGDCONT1,IP,1234,0.0.0.0,0,0 Establish the communication AT+CGDCONT Command for Defining the PDP ContextRun +++ to quit the data mode and enter the command mode AT+CGDCONT? AT+CGDCONT=? Querying the Range of PDP Related Parameters CRLF+CGDCONT …CRLFCRLF Crlfokcrlf Setting the Status of the PDP ContextReading the Status of the PDP Context +CGDCONT1,IP,1234,,0,0 AT+CGPADDR=? AT+CGPADDR Command for Reading the PDP AddressQuerying the Supported PDP Index Value Reading the PDP Address List of the Specified PDP Context Read the PDP address. AT+CGPADDR=1 +CGPADDR1,192.168.50.64 AT+CGQMIN=? Delay Level Average Percentile Transmission DelayWhen the size of SDU is 1024 octets Querying the Supported QoS Parameter Range Issue 02 Huawei Proprietary and Confidential 124 CRLF+CGQMIN Querying the Minimum QoS of All PDP Contexts AT+CGQREQ=? AT+CGQREQ Command for Setting the Requested QoS ProfileSetting the Minimum QoS of a PDP Context Checking the Parameter Range Supported by the Command Delay Level Average Transmission Delay Percentile Issue 02 Huawei Proprietary and Confidential 128 CRLF+CGQREQ Setting the QoS of a PDP ContextQuerying All QoS Levels Specified by the TE Write comm Functi on Respo nse AT+CGREG=? 4 +CGREG Command for Reporting Unsolicitedly Reading the Current SMS Bearer Domain 10 AT+CGSMS Command for Selecting the MO SMS Bearer DomainAT+CGSMS command sets the MT SMS bearer domain Querying the Supported SMS Bearer Domains Setting the SMS Bearer Domain Issue 02 Huawei Proprietary and Confidential 134 Atsics command can create and edit a connection profile Commands for Internet ServicesAtsics Command for Creating a Connection Profile Checking Whether the Sics Command Is Available Currently Reading the Information About Connection ProfilesCSD Not Supported Setting the Internet Connection Profile ATSICS? Atsici Command for Querying the Connection ProfileAtsici command queries the status of the connection profile Query the status of the connection profile ATSICI? Querying the ID of the Defined Connection ProfileQuerying the Status of the Connection Profile ATSICI=? ATSICI? Displaying the Status of the Specified Connection ProfileExample Query the ID of the supported connection profile ATSICI=? Test ATSISS=? command Atsiss Command for Creating the Service ProfileReading the Status of the Service Profile Atsiss command sets the service profile SrvParmTag SrvParmValue SrvParmTag Mandatory/Optional Setting the Internet Service Profile Atsisi command queries the status of the service profile Atsisi Command for Querying the Service ProfileQuerying the ID of the Defined Service Profile Query the status of the service profile Crlfsisi Querying the Status of the Service Profile ATSISI? Displaying the Status of the Specified Service ProfileATSISI=? ATSISO? Atsiso Command for Starting Internet ServicesQuerying the Open Status of All Services This command starts a specified Internet service ATSISO=0 Starting a Specified Internet ServiceExample Enable service ATSISO? Atsisc Command for Stopping Internet ServicesStopping a Specified Internet Service ATSISC=0 Atsisw Command for Writing Data for Internet ServicesWriting Data to the Buffer of a Service Test ATSISW=? command ATSISW=? Sisw Command for Reporting UnsolicitedlyExample Check whether the command is available User enters 20 characters here Atsisr Command for Internet Services to Read DataChecking Whether the Atsisr Command Is Available Atsisr command reads data out from the service buffer Crlfsisr Reading Data Out From the Buffer of an Internet Service Exmaples Sisr Command for Reporting Unsolicitedly URC Crlfsis srvProfileId,urcCause, urcInfoId,urcInfoTextCRLF AT+CMGD=? Commands for Short Messages11.1 AT+CMGD Command for Deleting Short Messages AT+CMGD=1 Case of an error related to the MS CRLF+CMSDeleting Short Messages Example AT+CMGD=? +CMGD1-255 Check the parameter range AT+CMGF=? Checking the Supported Format of Short MessagesDelete all the short messages that are Stored on the SIM card AT+CMGF? Setting the Format of Short MessagesReading the Format of Short Messages AT+CMGF=0 Checking the Supported Status of Short Messages AT+CMGF=0, that is, when short messages are in PDU mode Oct Oct to 1Oct 12 Oct Reading the List of Short MessagesSCA AT+CMGR=? 11.4 AT+CMGR Command for Reading Short Messages+CMGL 1,1 …Short messages in PDU mode AT+CMGL=4 Reading Short Messages When short messages are in PDU mode +CMGR=0CRLF+CMS Error errCRLF Index of the SIM card CRLF+CME Error Write command 11.5 AT+CMGS Command for Sending Short MessagesTest AT+CMGS=? command This command sends short messages in PDU mode +CMGF=0 AT+CMGS=20 11.6 AT+CMGW Command for Storing Short MessagesAT+CGSMS=1 AT+CMGF=0 AT+CMGF=0 AT+CMGW=56 This command stores short messages in PDU mode +CMGF=0Example Store a short message in PDU mode Storing Short Messages Short message is successfully sent Test AT+CMSS=? commandWhen the short message is in PDU mode +CMGF=0 Sending a Short Message at the Specified Location AT+CNMI=? Example Send a stored short message in PDU modeAT+CMGF=0 AT+CMSS=8 Location whose index is +CMSS Issue 02 Huawei Proprietary and Confidential 169 CRLF+CNMI Setting the Status of Short Message NotificationReading the Status of Short Message Notification AT+CNMI=1,1,0,0,0 AT+CPMS=? AT+CPMS command sets the storage location of short messagesChecking the Storage Location of Short Messages CRLF+CPMS Reading the Status of Storage LocationAT+CPMS? AT+CPMS? 11.10 AT+CSCA Command for Setting the NumberSetting the Storage Location AT+CPMS=? Reading the Currently Registered Number of the Smsc Checking Whether the Command Is AvailableResponse z When the Smsc has been registered Number falls within the number range of the home country Setting the Number of the SmscManagement or service. The subscriber cannot use this value Number is organized by the network +CSCA 1380063859 AT+CSCB command selects the type of cell messagesAT+CSCA? AT+CSCB? Setting the Current CBM TypeReading the Current CBM Type Example Query the current CBM information +CSCB 0,1 11.12 AT+CSMS Command for Setting the Message Service TypeAT+CSMS command sets the message service type AT+CSCB=? AT+CSMS? Reading the Current Message Service TypeSetting the Message Service Type Example AT+CSMS=? +CSMS +CMT command is used to indicate that a new SM is received 11.13 +CMTI Command for Unsolicitedly Reporting SMS Arrival11.14 +CMT Command for Unsolicitedly Reporting a New SM +CMTI command is used to indicate that a new SM is received 11.15 +CBM Command for Unsolicitedly Reporting a Cell SM AT+CRSM=? Commands for the SIM CardChecking Whether the +CRSM Command Is Available CRLF+CRSM Accessing the SIM Database AT+CPBR command reads the phone book Commands for the Phone Book13.1 AT+CPBR Command for Reading the Phone Book Checking the Parameter Range Supported by the +CPBR Command CRLF+CPBR 13.1.2 +CPBR Command for Reading the Phone BookAT+CPBR=? 13.2 AT+CPBW Command for Writing the Phone Book AT+ CPBW=? Example Query the parameter range supported by this commandWriting a Record into the Phone Book AT+CPBS=? 13.3 AT+CPBS Command for Selecting the Phone Book MemoryChecking the Value Range Supported by the +CPBS Command +CPBS FD,SM,ON,LD,MC,RC,EN Example Setting the Memory Type of the Phone BookReading the Current Memory of the Phone Book AT+CPBS=? AT+CPBS=SM AT+CPBS?+CPBS SM,23,250 Example 14.1 AT+CALA Commands for Hardware ControlCase of an error related to the MT CRLF+CME Error Integer, which indicates the index of the alarm clock array AT+CALA? Querying the Set Alarm ClockSetting an Alarm Clock AT+CALA=? 14.2 AT+CCLK Command for Setting the System Time14.1.4 +CALA Command for Reporting Unsolicitedly +CALA 0,0,1-16 Example Query the current alarm clock AT+CCLK? Setting the System TimeTest ATCCLK=? command Querying the Current System Time AT+CCLK? Example Query the current system time Atswspath command switches the audio channel Commands for Audio ControlAtswspath Command for Switching Between Audio Channels This chapter describes the AT commands for audio control Querying the Supported Microphnoe Gain Levels Switching the Audio ChannelAT+CMIC command adjusts the the mircophone gain level Reading the Current Audio Channel Querying the Current Microphone Gain Level Atecho Command for Suppressing the EchoSetting the Microphone Gain Level Atecho command suppresses the echo ATECHO? Case of an errorCRLFERRORCRLFQuerying the Supported Echo Suppressing Functions ATECHO=? AT+CLVL command adjusts the speaker volume 15.4 AT+CLVL Command for Adjusting the Speaker VolumeSetting the Echo Suppressing Function Querying the Supported Speaker Volume Level AT+CMUT command is used to mute and unmute the microphone 15.5 AT+CMUT Command for Muting and Unmuting the MicrophoneReading the Current Speaker Volume Setting the Speaker Volume AT+CMUT? Querying the Supported Muting Settings for the MicrophoneReading the Curent Muting Settings of the Microphone Test AT+CMUT=? command Setting the Muting Function of the Microphone Execution command Function Other Commands16.1 A/ Command for Executing the Previous Command Again Execution Command ATS3? Querying the Current Command Line Ending CharacterSetting the Command Line Ending Character CRLFnCRLFCRLFOKCRLF 16.3 ATS4 Command for Setting the Response Format Character013 Example Set the command line ending character ATS3=13 Querying the Current Format Character ATS4? 16.4 ATS5 Command for Setting the Backspace CharacterSetting the Response Format Character Example Query the current response format character ATS5? Setting the Current Backspace CharacterQuerying the Current Backspace Character Crlftherm modeCRLF ATS5=8 Appendix List of effects on AT commands imposed by SIM PIN1List of effects on AT commands imposed by SIM PIN Commands for identification Commands for status controlCommands for serial port control Commands for security control ATO AT+CHUP AT+CR AT+CRC AT+VTS AT+CLIP Commands for network servicesCommands for data services ATS7 AT+CRLP AT+CBST Commands for the phone book Commands for Internet servicesCommands for short messages Command related to the SIM card Other commands List of URC CommandsCommands related to the hardware Commands for audio control AT+CGEREP +CGEV NW Detach +CGEV ME Detach AT+CALA Sysstart Alarm ModeSIS AT+CGEREP Err Code Text AT+CMEE=2 List of CME/CMS Error Codes3Common CME Error codes 4CME Error codes related to the Gprs No +CNMA ACK Expected 5CMS Error codes related to the SMS6CME Error codes related to the MG323 only Err Code Text AT+CMEE=2 Not Supported CurrentlyPage Acronym and Abbreviation Full Spelling Acronyms and Abbreviations7Acronyms and abbreviations Plmn PDPPDU PIN Wcdma XCDXER

Huawei MG323 Atecho Command for Suppressing the Echo, Querying the Current Microphone Gain Level

Models: MG323

Parameter description

15.2.2Querying the Current Microphone Gain Level

Read

AT+CMIC?

Response

z In case of successful execution:

<CR><LF>OK<CR><LF>

15.2.3Setting the Microphone Gain Level

Write

Response

15.3 AT^ECHO - Command for Suppressing the Echo

The AT^ECHO command suppresses the echo.