Multi-Tech Systems MT3334SMI manual Action by Command Respone Local Modem Remote PC

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ModemModule Developer’s Guide

Table 3-2. Single-Page Class 1 Transmit Example

		Action by	Action by
Command	Respone	Local Modem	Remote PC
AT+FCLASS=1	OK	Set Class 1
ATD<string>		Dial and send CNG	Answers
		Look for V.21	Sends CED, V.21
		Detect flags	Sends HDLC flags
	CONNECT	Detect flags
	<NSF frame>	Get CSI	Send CSI packet
	<DLE><ETX>		Send NSF packet
	OK
AT+FRH=3
	CONNECT Detect flags
	<CSI frame data>	Get CSI	Send CSI packet
	<DKE><ETX>	Get FCS
	OK	Accept FCS	Check FCS
AT+FRH=3
	CONNECT	Detect flags
	<DIS> frame data	Get DIS	Send DIS packet
	<DKE><ETX>	Get CRC
	OK	Accept FCS Check FCS
AT+FRH=3	NO CARRIER	Detect loss of carrier	Drop carrier
AT+FTH=3		Send V.21 carrier	Detect carrier
	CONNECT	Send flags	Detect flags
		Send TSI frame	Get TSI frame
<TSI frame data>		Send FCS
<DLE><ETX>	CONNECT	Send flags
		Send DCS frame	Send DCS frame
<DCS frame data>		Send FCS, flags
<DLE><ETX>	OK	Drop carrier
AT+FTS=8; +FTM=96		Wait 80 msec
	CONNECT	Send V.29 carrier	Detect carrier
<TCF data pattern>		Send TCF data	Get TCF data
<DLE><ETX>	OK	Drop carrier
AT+FRH=3		Detect carrier	Send V.21 carrier
	CONNECT	Detect flags	Send flags
	<CFR frame data>	Get CFR frame	Send CFR frame
	<DLE><ETX>	Check FCS	Send CRC
	OK	Accept FCS
AT+FRH=3	NO CARRIER	Detect loss of carrier	Drop carrier
AT+FTM=96	CONNECT	Send V.29 carrier	Detect carrier
<page image data>		Send page data	Receive page
<DLE><ETX>	OK	Drop carrier
AT+FTS=8; +FTH=3		Wait 80 msec
		Send V.21 carrier	Detects carrier
	CONNECT	Send flags	Detects flags
<EOP frame data>		Send EOP frame	Receives EOP
<DLE><ETX>		Send FCS
	OK	Drop carrier	(Final frame)
AT+FRH=3		Detect carrier	Send V.21 carrier
	CONNECT	Detect flags	Send flags
	<MCF frame data>	Get MCF frame	Send MCF frame
	<DEL><ETX>	Check FCS Send FCS
	OK	Accept FCS
AT+FRH=3	NO CARRIER	Detect carrier loss	Drop carrier
AT+FTH=3		Send V.21 carrier	Detects carrier
	CONNECT	Send flags	Detect flags
<DCN packet>		Send DCN frame	Receives DCN
<DLE><ETX>		Send FCS
	OK	Drop carrier
ATH0	OK	Hang up	Hangup

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MT3334SMI

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Contents Model MT3334SMI Evaluation Kit Data/Fax Socketed ModemRevision Description PatentsContents Index Introduction and Description Product Description FeaturesIntroduction ModemModule Developer’s GuideTechnical Specifications Introduction and Description1200 bps Physical Dimensions MT3334SMI Physical DimensionsLED1-LED4 Test/Demo Board SpecificationsDS1 Test/Demo Board Block Diagram MT3334SMI Test/Demo Board Block DiagramMT3334SMI Pin-out MT3334SMI PinoutTypical Application MT3334SMI Design Considerations Hardware ConsiderationsRecommended Transceiver PC Board Layout ConsiderationsCalculating Z for Tip and Ring Traces Qty Name Description MT3334SMI PlacementKey Telecom Labeling Requirements FCC PartMultiple Listing ReregistrationIndustry Canada CS-03 AT Commands, S-Registers, and Result Codes Repeat Last Command AnswerAT Commands, S-Registers, and Result Codes Return Online to Data Mode Monitor Speaker VolumeMonitor Speaker Mode Result Codes Enable/DisableTone Dialing Modem ResetSr? Read Register Value Result Code FormatDisplay Current Settings Command &Fn Load Factory SettingsAsynchronous Communications Mode Store Current Configuration\Bn Transmit Break Command &Zy=x Store Dialing Command\An Select Maximum MNP Block Size \Jn Data Buffer Control\Qn Flow Control Selection \Nn Error Correction Mode Selection\Tn Inactivity Timer \Vn Protocol Result CodeCommand +ES=n Enable Synchronous Buffered Mode Command %DCn AT Command ControlCommand %En Fallback and Fall Forward Control Enter Setup PasswordRegister Unit Range Default Description RegistersS43 Result Codes Terse Verbose DescriptionClass 1 Fax Commands Class 1 Fax Command Summary Command DescriptionFunction Display Current Class Values Default Data modem Class 1 Fax Commands Fax MOD Modulation Parameter ValuesCommand Result Code MeaningFunction ModemModule Developer’s Guide CommandFunction Select Service Class Values Default Data mode Class 1 Fax Commands +FRS=? Enter+FRM=? Enter Sample Sessions Flow ControlResult Codes Action by Command Respone Local Modem Remote PC AT+FRH=3 No Carrier ModemModule Developer’s Guide Class 2 Fax Commands +FAA Class 2 Fax Command ImplementationClass 2 Fax Commands EIA SP-2388 August +FAXERR+FCR +FBOR+FCQ +FDCS +FDCCFax Capability Parameters Current Session Results+FDIS +FDFFCData Compression Format Conversion Current Session Parameters+FECM +FDR+FDT +FET+FLNFC +FK+FLID +FLPL+FREL +FPTS+FRBC +FSPL+FHNG +FTSIMT3334SMI Remote Configuration Changing the Setup Password Basic ProcedureSetup ModemModule User GuideRemote Configuration Changing the Remote Escape CharacterMT3334SMI Troubleshooting Test procedure Local Analog Loopback Test V.54 LoopTroubleshooting Remote Digital Loopback Test V.54 LoopLocal Digital Loopback Test V.54 Loop Local digital loopback testUpgrade Procedure Identify the Current Firmware Version Upgrade OverviewIdentify the Modem Firmware Multi-Tech Web SiteMulti-Tech BBS Download the Upgrade FileUpgrade Procedure Restore Your Parameters Extract the Upgrade FilesUse FlashPro to Upgrade Modem Firmware Clear Your Stored ParamentersAppendixes MT3334SMI Canadian Limitations Notice FCC FAX UpdateInternational Modem Restrictions AppendixesNew Zealand Telecom Warning Notice EMC, Safety and Terminal Directive ComplianceEuropean Directives User Guide Statement Programming the Modem Appendix B Multi-Tech Flash Programming ProtocolIntroduction Handshake SequenceModemModule Developer’s Guide Program Sequence Other supported boot code commandsOther programming concerns Xxxx Intel Hex FormatData Record Eeee Extended Address RecordEnd of File Record Index IndexMT3334SM MT3334SMI MT3334SM