Multi-Tech Systems MT3334SMI manual Command &Fn Load Factory Settings, 22bis Guard Tone Control

Page 24

ModemModule Developer’s Guide

Command: &Fn Load Factory Settings
Values:	n = 0
Default:	None
Description: &F0	Load factory settings as active configuration.
Note: See also the Z command.

Command:	&Gn	V.22bis Guard Tone Control
Values:		n = 0, 1, or 2
Default:		0
Description:	&G0	Disable guard tone.
	&G1	Set guard tone to 550 Hz.
	&G2	Set guard tone to 1800 Hz.
Note: The &G command is not used in North America.

Command:	&Kn	Flow Control Selection
Values:		n = 0, 3, or 4
Defaults:		3
Description:	&K0	Disable flow control.
	&K3	Enable CTS/RTS hardware flow control.
	&K4	Enable XON/XOFF software flow control.

Command:	&Pn	Pulse Dial Make-to-Break Ratio Selection
Values:		n = 0, 1, or 2
Default:		0
Description:	&P0	60/40 make-to-break ratio
	&P1	67/33 make-to-break ratio
	&P2	20 pulses per second
Note: The &P command is used only in Japan.

Command:	&Qn	Asynchronous Communications Mode
Values:		n = 0, 5, 6, 8, or 9
Default:		5
Description:	&Q0	Asynchronous with data buffering. Same as \N0.
	&Q5	Error control with data buffering. Same as \N3.
	&Q6	Asynchronous with data buffering. Same as \N0.
	&Q8	MNP error control mode. If MNP error control is not established, the modem falls back according
		to the setting in S36.
	&Q9	V.42 or MNP error control mode. If neither error control is established, the modem falls back
		according to the setting in S36.
Command:	&Sn	Data Set Ready (DSR) Control
Values:		n = 0 or 1
Default:		0
Description:	&S0	Force DSR always high (on).
	&S1	Let DSR go high only during a connection.
		at power-on or following the ATZ command.
Command:	&V	Display Current Settings
Values:		n/a
Description:		Displays the active modem settings, including the callback security settings if callback security is
		enabled. If the setup password has been entered, it also displays the callback security passwords.
Command:	&Wn	Store Current Configuration
Values:		n = 0
Default:		0
Description:	&W0	Stores current modem settings in non-volatile memory and causes them to be loaded at power-on
		or following the ATZ command instead of the factory defaults. See also the &F command.
	&W1	Clears user default settings from non-volatile memory and causes the factory defaults to be
		loaded at power-on or following the ATZ command.

24

MT3334SMI

Image 24

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