Multi-Tech Systems MT3334ZDXV Data Terminal Ready DTR Control, Load Factory Default Settings

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MT3334ZDX/V Owner's Manual

Command:

&Dn

Data Terminal Ready (DTR) Control

Values:

n = 0, 1, 2, or 3

Default:

2

 

Description: &D0

Modem ignores the true status of the DTR signal

 

 

and responds as if it is always on.

 

&D1

When DTR drops while in online data mode, the

 

 

modem enters command mode, issues an OK, and

 

 

remains connected.

 

&D2

When DTR drops while in online data mode, the

 

 

modem hangs up.

 

&D3

When DTR drops, the modem hangs up and resets

 

 

as if an ATZ command were issued.

Command:

&Fn

Load Factory Default Settings

Values:

n = 0

 

Default:

None

 

Description:

&F0

Load factory settings as active configuration.

Command:

&Gn

V.22bis Guard Tone Control

Values:

n = 0, 1, or 2

Default:

0

 

Description: &G0

Disable guard tone.

 

&G1

Enable 550 Hz guard tone.

 

&G2

Enable 1800 Hz guard tone.

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

Flow control disabled.

 

&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.

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Contents Page Patents Revision DescriptionContents Index Introduction and Description Requirements ComputerSerial Cable Telephone LineData Product FeaturesCommunications Software Installation and Connection About this ManualFax Voice Model MT3334ZDXV onlyAT Commands, S-Registers and Result Codes Testing Your ModemService, Warranty & Technical Support AppendicesInstallation Process Installation IntroductionSafety Warnings Page MultiModemZDX Connections LED Indicators Front PanelInstallation Is Your MultiModemZDX Ready for Use? Operating Your MultiModemZDX Simple OperationsRemote Configuration Software Configuration AT&FcrMultiModemZDX Configuration Confirmation Hardware/Software ConfirmationTroubleshooting None of the LEDs Light When the Modem Is OnModem Does Not Respond to Commands Installation Modem Dials But Cannot Make Connection Installation Modem Cannot Connect When Answering Modem Disconnects While OnlineSlow File Transfer Losing DataGarbage Characters on the Monitor AT Commands, S-Registers Result Codes Command Summary Dial string modifiers Echo Command Mode CharactersDial Monitor Speaker Volume Monitor Speaker ModeEcho Online Data Characters On-Hook/Off-Hook ControlReturn Online to Data Mode Enable/Disable Result CodesModulation Handshake = n Set Register ValueModem Reset Result Code SelectionLong Space Disconnect Data Carrier Detect DCD ControlLoad Factory Default Settings Communications ModeData Terminal Ready DTR Control 22bis Guard Tone ControlATDS=n \N n Error Correction Mode Selection \K n Set Break Control\V n Protocol Result Code Data Compression ControlModem Baud Rate Serial Port Baud RateRegisters Register Unit Seconds Range 255 Default Description S10S11 S28S30 S35S43 S37S42 S48 S89Delayed Terse Verbose DescriptionModem Testing Local Analog Loopback Test/V.54 Loop Local Analog Loopback TestDigital Loopback Test/V.54 Loop 2 Local/Manual Digital Loopback Test/V.54 Loop 2 Remote/Auto Digital Loopback Testlocal/manualDigital Loopback Test remote/automatic Limited Warranty Recording Modem Information On-line Warranty RegistrationTech Support Service About the Multi-Tech BBS No Longer Available Logging on to the Multi-Tech BBSDownloading a File If you know the file nameIf you don’t know the file name Reading a MessageLeaving a Message Bulletins Multi-Tech Fax-Back Service No Longer AvailableAbout CompuServe/Internet No Longer Available Appendix a Technical Specifications Intelligent Features Command BufferData Modulation Fax Modulation2400 & 1200 bps 22bis/V.22Carrier Frequencies Fax 21 CH2 Half DuplexConnectors DiagnosticsIndicators Temperature Power Requirement697 770 852 941 Appendix B Tone Dial FrequenciesAppendices MT3334ZDX, MT3334ZDXV Appendices Canadian Limitations Notice Compliance with Babt Requirements European Low Voltage DirectivePage Compliance with BS6789 .1 and Part Compliance with BS6328 PartModem CE Mark EMC and Safety Compliance Modem Commands Default Permissible RangeRegister Default Permissible Range Australian and New Zealand Modem Warning NoticeNew Zealand Telecom Warning Notice Call Attempts/RetriesIndex Error Correction Page MT5634ZDXv Connections Power Supply Index