Multi-Tech Systems MT3334SMI Command %DCn AT Command Control, DTR Dialing, Enter Setup Password

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Chapter 2 - AT Commands, S-Registers, and Result Codes

 

Command: %DCn AT Command Control

Values:

n = 0 or 1

Default:

0

Description: %DC0

The modem responds to AT commands.

%DC1 The modem ignores AT commands.

Note: The modem will respond to AT%DC for 10 seconds after power-up.

Command: %En Fallback and Fall Forward Control

Values:

n = 0, 1, or 2

Default:

2

Description: %E0

Disable fallback and fall forward.

%E1

Enable fallback, disable fall forward.

%E2

Enable fallback and fall forward.

Command: $Dn

DTR Dialing

Values:

n = 0 or 1

Default:

0

Description: $D0 Disables DTR dialing.

$D1 Dials the number in memory location 0 when DTR goes high.

Command: +ES=n Enable Synchronous Buffered Mode

Values:

n = 6

Default:

None

Description:

Allows an H.324 video application direct access to the synchronous data channel. On underflow,

 

the modem sends HDLC flag idle (0x7E) to the remote modem.·This special error control mode is

 

overridden by any of the following commands: &F, &M, &Q, or \N.

 

AT+ES=? shows the only allowed value.

 

AT+ES? shows the current value.

Command: #Sx

Enter Setup Password

Values:

x= password (1–8 characters, case sensitive)

Default:

MTSMODEM

Description:

Enters the remote configuration setup password.

Command: #S=x Store Setup Password

Values:

x= password (1–8 characters, case sensitive)

Default:

MTSMODEM

Description:

Stores a new remote configuration setup password.

Command: +++AT<CR> Escape Sequence

Values:

n/a

Description:

Puts the modem in command mode (and optionally issues a command) while remaining online.

 

Type +++AT and up to ten command characters, then press ENTER. Used mostly to issue the

 

hang-up command: +++ATH<CR>.

Command: %%%AT<CR>Remote Configuration Escape Sequence

Values:

n/a

Description:

Initiates remote configuration mode while online with remote modem. The remote configuration

 

escape character (%) is defined in register S13.

MT3334SMI

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Contents Data/Fax Socketed Modem Model MT3334SMI Evaluation KitPatents Revision DescriptionContents Index Introduction and Description ModemModule Developer’s Guide FeaturesIntroduction Product DescriptionIntroduction and Description Technical Specifications1200 bps MT3334SMI Physical Dimensions Physical DimensionsTest/Demo Board Specifications DS1LED1-LED4 MT3334SMI Test/Demo Board Block Diagram Test/Demo Board Block DiagramMT3334SMI Pinout MT3334SMI Pin-outTypical Application Hardware Considerations MT3334SMI Design ConsiderationsPC Board Layout Considerations Calculating Z for Tip and Ring TracesRecommended Transceiver MT3334SMI Placement KeyQty Name Description FCC Part Telecom Labeling RequirementsReregistration Industry Canada CS-03Multiple Listing AT Commands, S-Registers, and Result Codes Answer Repeat Last CommandAT Commands, S-Registers, and Result Codes Result Codes Enable/Disable Monitor Speaker VolumeMonitor Speaker Mode Return Online to Data ModeResult Code Format Modem ResetSr? Read Register Value Tone DialingStore Current Configuration Command &Fn Load Factory SettingsAsynchronous Communications Mode Display Current Settings\Jn Data Buffer Control Command &Zy=x Store Dialing Command\An Select Maximum MNP Block Size \Bn Transmit Break\Vn Protocol Result Code \Nn Error Correction Mode Selection\Tn Inactivity Timer \Qn Flow Control SelectionEnter Setup Password Command %DCn AT Command ControlCommand %En Fallback and Fall Forward Control Command +ES=n Enable Synchronous Buffered ModeRegisters Register Unit Range Default DescriptionS43 Terse Verbose Description Result CodesClass 1 Fax Commands Command Description Class 1 Fax Command SummaryResult Code Meaning Class 1 Fax Commands Fax MOD Modulation Parameter ValuesCommand Function Display Current Class Values Default Data modemModemModule Developer’s Guide Command Function Select Service Class Values Default Data modeFunction +FRS=? Enter Class 1 Fax Commands+FRM=? Enter Flow Control Result CodesSample Sessions Action by Command Respone Local Modem Remote PC AT+FRH=3 No Carrier ModemModule Developer’s Guide Class 2 Fax Commands +FAXERR Class 2 Fax Command ImplementationClass 2 Fax Commands EIA SP-2388 August +FAA+FBOR +FCQ+FCR Current Session Results +FDCCFax Capability Parameters +FDCSCurrent Session Parameters +FDFFCData Compression Format Conversion +FDIS+FET +FDR+FDT +FECM+FLPL +FK+FLID +FLNFC+FSPL +FPTS+FRBC +FREL+FTSI +FHNGMT3334SMI Remote Configuration ModemModule User Guide Basic ProcedureSetup Changing the Setup PasswordChanging the Remote Escape Character Remote ConfigurationMT3334SMI Troubleshooting Local Analog Loopback Test V.54 Loop Test procedureRemote Digital Loopback Test V.54 Loop TroubleshootingLocal digital loopback test Local Digital Loopback Test V.54 LoopUpgrade Procedure Multi-Tech Web Site Upgrade OverviewIdentify the Modem Firmware Identify the Current Firmware VersionDownload the Upgrade File Upgrade ProcedureMulti-Tech BBS Clear Your Stored Paramenters Extract the Upgrade FilesUse FlashPro to Upgrade Modem Firmware Restore Your ParametersAppendixes MT3334SMI Appendixes FCC FAX UpdateInternational Modem Restrictions Canadian Limitations NoticeEMC, Safety and Terminal Directive Compliance European Directives User Guide StatementNew Zealand Telecom Warning Notice Handshake Sequence Appendix B Multi-Tech Flash Programming ProtocolIntroduction Programming the ModemOther supported boot code commands Other programming concernsModemModule Developer’s Guide Program Sequence Intel Hex Format Data RecordXxxx Extended Address Record End of File RecordEeee Index IndexMT3334SM MT3334SMI MT3334SM