Multitech MT5634ZBA-USB manual Load Factory Settings, Command &Gn V.22bis Guard Tone Control

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	Chapter 4 - AT Commands, S-Registers and Result Codes

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: &Jn	Auxiliary Relay Control
Values:	n = 0
Default:	0
Description:&J0	The auxiliary relay is never closed.
&J1	Not supported—responds ERROR.

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: &Mn	Communications Mode
Values:	n = 0
Defaults:	0
Description:&M0	Asynchronous mode.
&M1	Not supported—responds ERROR.

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 ac-
	cording 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.

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Contents User Guide Trademarks Record of RevisionsContents Index Introduction and Description MT5634ZBA-USB User Guide IntroductionProduct Description Universal Serial Bus USBIntroduction and Description What Is in Your Modem Package?MT5634ZBA-USB User Guide Quick Start You supply Safety WarningsWhat You Will Need We supplyQuick Start Assemble the ModemInstall the Software USB Connection Connect the Modem to Your SystemLine Connection Phone ConnectionTest Your Modem Select the ModemFeatures Features What Can You Do with Your Modem?Data Telephone Line FaxRequired Equipment ComputerConnections Connecting to the Computer USBConnecting to the Telephone Line Line Connecting to a Telephone Set PhoneFront panel Front PanelMT5634ZBA-USB User Guide AT Commands, S-Registers and Result Codes AT Commands AT Command Summary Echo Online Data Characters Command DS=n Dial Stored Telephone NumberEcho Command Mode Characters Monitor Speaker VolumeCommand Sr=n Set Register Value Monitor Speaker ModeReturn Online to Data Mode Result Codes Enable/DisableModem Reset MT5634ZBA-USB User Guide Command Vn Result Code FormatCommand Xn Result Code Selection Command Yn Long Space DisconnectAsynchronous Communications Mode Load Factory SettingsCommand &Gn V.22bis Guard Tone Control Communications ModeSelect Stored Configuration for Hard Reset MT5634ZBA-USB User Guide Command &Tn V.54 Test CommandsDisplay Current Settings Command &Wn Store Current ConfigurationBreak Control Error Correction Mode SelectionModem Port Flow Control Data Buffer ControlProtocol Result Code Inactivity TimerCommand %Cn Data Compression Control Command %DCnAT Command ControlCommand%%%ATCRRemote Configuration Escape Sequence Command %En Fallback and Fall Forward ControlEnter Setup Password Command #S=x Store Setup PasswordRegisters S37 S38Rates K56flex Rates S89 S42S43 S48Terse Verbose Description Result CodesMT5634ZBA-USB User Guide Remote Configuration Basic Procedure SetupChanging the Setup Password Changing the Remote Escape Character Remote ConfigurationMT5634ZBA-USB User Guide Troubleshooting Modem Does Not Respond to Commands None of the Indicators LightModem Dials But Cannot Connect TroubleshootingFax and Data Software Can’t Run at the Same Time Modem Cannot Connect When AnsweringModem Disconnects While Online Modem Doesn’t Work with Caller IDAppendixes FCC Regulations for Telephone Line Interconnection Appendix a Regulatory ComplianceIndustry Canada Class B StatementFAX Branding Statement Canadian Limitations NoticeEuropean Directives International Modem RestrictionsNew Zealand Telecom Warning Notice Appendix B Technical Specifications ITU-T V.32bis/V.32 Carrier Frequencies ConnectorsCarrier Frequencies ITU-TWeight DiagnosticsIndicators DimensionsIntroduction Appendix C Loopback TestsLocal Analog Loopback Test V.54 Loop Figure C-1. Local analog loopback test Test ProcedureAppendix C Loopback Tests Remote Digital Loopback Test V.54 LoopLocal Digital Loopback Test V.54 Loop Figure C-3. Local digital loopback test Test ProcedureService Appendix D Warranty, Service, and Technical SupportLimited Warranty Online Warranty RegistrationTo Download a File Technical SupportMulti-Tech BBS To Log on to the Multi-Tech BBSAbout the Internet About the Multi-Tech Fax-Back ServiceIndex Index MT5634ZBA-USB User Guide