Multi-Tech Systems MT3334SMI manual +FRM=? Enter

Page 36

ModemModule Developer’s Guide

Command:

+FRM=? <Enter>

Function:

Display the valid range of receive data modulation values

Values:

<MOD> = 3, 24, 48, 72, 73, 74, 96, 97, 98, 121, 122, 145, 146

Default:

3 (V.21 ch.2 @ 300 bps)

Result Codes: the current value range supported by the modem.

Description:

The +FRM=? command causes the modem to display the current modulation for

 

receive data spcified by the +FRM=<MOD> command.

Command:

+FTH=<MOD> <Enter>

Function:

Transmit HDLC data with <MOD> carrier

Values:

see Table 3-1 for <MOD> (modulation) values

Default:

3 (V.21 ch.2 @ 300 bps)

Result Codes: OK, ERROR, or CONNECT

Description:

The +FTH command causes the modem to transmit data in HDLC protocol using the

 

selected modulation (see Table 3-1 for modulation <MOD> values). The modem

 

buffers data in HDLC transmit mode, using the configured method of flow control to

 

pause PC data, as necessary. If the PC sends no data for 5 seconds after the

CONNECT message, the modem turns off its transmit carrier, returns to Command mode, and displays the OK message.

Note: The +FTH command must be entered as the last command in the command string (i.e., it must be immediately followed by the <Enter> key).

Command:

+FTH=? <Enter>

Function:

Displays the valid range of transmit modulation values

Values:

<MOD> = 3, 24, 48, 72, 73, 74, 96, 97, 98, 121, 122, 145, 146

Default:

3 (V.21 ch.2 @ 300 bps)

Result Codes: the current range of valid values supported by the modem.

Description:

The +FTH=? command causes the modem to display the set of supported transmit

 

modulations specified by the +FTH=<MOD> command (refer to Table 3-1).

Command:

+FRH=<MOD> <Enter>

Function:

Receive HDLC data with <MOD> carrier

Values:

see Table 3-1 for <MOD> (modulation) values

Default:

3 (V.21 ch.2 @ 300 bps)

Result Codes: NO CARRIER, +FCERROR, OK, or ERROR

Description:

The +FRH command causes the modem to receive HDLC packet data using the

 

modulation mode selected with <MOD>, then delivers the next frame to the PC.

 

Possible <MOD> values are shown in Table 3-1. If other than an HDLC packet is

 

detected, the modem displays the +FCERROR (Connect Error) message, returns to

 

Command mode, then displays the NO CARRIER message. If this command is

 

entered with the modem on-hook, the ERROR result code is displayed.

Note: The +FRH command must be entered as the last command in the command string (i.e., it must be immediately followed by the <Enter> key).

Command:

+FRH=? <Enter>

Function:

Displays the valid range of receive modulation values

Values:

<MOD> = 3, 24, 48, 72, 73, 74, 96, 97, 98, 121, 122, 145, 146

Default:

3

Result Codes: the valid range of values supported by the modem.

Description:

The +FRH=? command causes the modem to display the set of supported receive

 

modulation values (specified by the +FRH=<MOD> command).

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MT3334SMI

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Contents Model MT3334SMI Evaluation Kit Data/Fax Socketed ModemRevision Description PatentsContents Index Introduction and Description Features IntroductionProduct Description ModemModule Developer’s GuideTechnical Specifications Introduction and Description1200 bps Physical Dimensions MT3334SMI Physical DimensionsTest/Demo Board Specifications DS1LED1-LED4 Test/Demo Board Block Diagram MT3334SMI Test/Demo Board Block DiagramMT3334SMI Pin-out MT3334SMI PinoutTypical Application MT3334SMI Design Considerations Hardware ConsiderationsPC Board Layout Considerations Calculating Z for Tip and Ring TracesRecommended Transceiver MT3334SMI Placement KeyQty Name Description Telecom Labeling Requirements FCC PartReregistration Industry Canada CS-03Multiple Listing AT Commands, S-Registers, and Result Codes Repeat Last Command AnswerAT Commands, S-Registers, and Result Codes Monitor Speaker Volume Monitor Speaker ModeReturn Online to Data Mode Result Codes Enable/DisableModem Reset Sr? Read Register ValueTone Dialing Result Code FormatCommand &Fn Load Factory Settings Asynchronous Communications ModeDisplay Current Settings Store Current ConfigurationCommand &Zy=x Store Dialing Command \An Select Maximum MNP Block Size\Bn Transmit Break \Jn Data Buffer Control\Nn Error Correction Mode Selection \Tn Inactivity Timer\Qn Flow Control Selection \Vn Protocol Result CodeCommand %DCn AT Command Control Command %En Fallback and Fall Forward ControlCommand +ES=n Enable Synchronous Buffered Mode Enter Setup PasswordRegister Unit Range Default Description RegistersS43 Result Codes Terse Verbose DescriptionClass 1 Fax Commands Class 1 Fax Command Summary Command DescriptionClass 1 Fax Commands Fax MOD Modulation Parameter Values CommandFunction Display Current Class Values Default Data modem Result Code MeaningModemModule Developer’s Guide Command Function Select Service Class Values Default Data modeFunction Class 1 Fax Commands +FRS=? Enter+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 Class 2 Fax Command Implementation Class 2 Fax Commands EIA SP-2388 August+FAA +FAXERR+FBOR +FCQ+FCR +FDCC Fax Capability Parameters+FDCS Current Session Results+FDFFC Data Compression Format Conversion+FDIS Current Session Parameters+FDR +FDT+FECM +FET+FK +FLID+FLNFC +FLPL+FPTS +FRBC+FREL +FSPL+FHNG +FTSIMT3334SMI Remote Configuration Basic Procedure SetupChanging the Setup Password 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 Upgrade Overview Identify the Modem FirmwareIdentify the Current Firmware Version Multi-Tech Web SiteDownload the Upgrade File Upgrade ProcedureMulti-Tech BBS Extract the Upgrade Files Use FlashPro to Upgrade Modem FirmwareRestore Your Parameters Clear Your Stored ParamentersAppendixes MT3334SMI FCC FAX Update International Modem RestrictionsCanadian Limitations Notice AppendixesEMC, Safety and Terminal Directive Compliance European Directives User Guide StatementNew Zealand Telecom Warning Notice Appendix B Multi-Tech Flash Programming Protocol IntroductionProgramming the Modem Handshake SequenceOther 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
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