Multi-Tech Systems MT2834ZDX manual SFn DSR/CD Interaction Control, $SBn Serial Port Baud Rate

Page 15

 

 

 

Chapter 3 – AT Commands, S-Registers, and Results Codes

 

 

 

Command:

&SFn

DSR/CD Interaction Control

Values:

n = 0 or 1

Default:

0

 

 

Description:

&SF0 Select DSR to follow CD.

 

&SF1 Select DSR to be independent.

Command:

$SBn Serial Port Baud Rate

Values:

n = speed

Default:

57600

Description:

$SB300 Set serial port to 300 bps.

 

$SB1200 Set serial port to 1200 bps.

 

$SB2400 Set serial port to 2400 bps.

 

$SB4800 Set serial port to 4800 bps.

 

$SB9600 Set serial port to 9600 bps.

 

$SB19200 Set serial port to 19200 bps.

 

$SB38400 Set serial port to 38400 bps.

 

$SB57600 Set serial port to 57600 bps.

 

$SB115200 Set serial port to 115200 bps.

 

Note: Baud adjust must be off ($BA0) to enable fixed baud rate.

Command:

T

Tone-Dial

Values:

n/a

 

 

Default:

P command

Description:

Modem will tone-dial numbers following a T in the dialing command.

Command:

&Tn Respond to Remote Digital Loopback Signal

Values:

n = 4 or 5

Default:

5

 

 

Description:

&T4 Enable response to remote digital loopback signal.

 

&T5 Disable response to remote digital loopback signal.

Command:

#Tn

Trellis-Coded Modulation

Values:

n = 0 or 1

Default:

1

 

 

Description:

#T0 Disable trellis-coded modulation.

 

#T1 Enable trellis-coded modulation.

Command:

Un

 

Loopback Test Modes

Values:

n = 0, 1, 2, or 3

Default:

None

 

Description:

U0 Enable local nalog loopback originate mode.

 

U1 Enable local analog loopback answer mode.

 

U2 Enable remote digital loopback mode.

 

U3 Enable local digital loopback mode.

Command:

Vn

Result Codes (Verbose/Terse)

Values:

n = 0 or 1

Default:

1

 

 

Description:

V0 Result codes sent as digits (terse response).

 

V1 Result codes sent as words (verbose response).

Command:

#Vn

V.32terbo Handshake Tones

Values:

n = 0 or 1

Default:

1

 

 

Description:

#V0 Include V.32terbo tones in handshake.

 

#V1 Exclude V.32terbo tones from handshake.

Command:

W Wait for New Dial Tone

Values:

n/a

 

 

Description:

Inserted in dialing command, causes modem to wait for a new dial tone. (X2 or X4 must be

 

selected.)

Multi-Tech Systems, Inc. MT2834ZDX User's Guide

15

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Contents MT2834ZDX-Series External Data/Fax Modem Users Guide User Guide MT2834ZDX-Series S000309C Rev. C Contents Getting Started Introduction InstallationSafety Warnings FeaturesModem Installation Attach the Self-Adhesive FeetConnect the Modem to Your System Install the Modem Driver Install Data Communications SoftwareRemoving Your Old Modem from Windows Speed Indicator Blink Rates OperationFront Panel AT Commands AT Commands, S- Registers and Result CodesCDn Cleardown at Disconnect $BAn Baud AdjustDCn AT Command Control Carrier Detect ControlDPn Read Line Probe Data En Echo Command Mode CharactersEn V.42 Error Correction Modes En Non-Error Correction Mode Flow ControlFn Echo Frequency Canceller Offset Compensation $En V.42 Error Correction at 300 bpsLoad Default Configurations $Fn Enable/Disable Auto-Reliable Fallback CharacterInquire Product Codes List Commands#L n V.42 Mode Selection in Originate Mode $H n Help ScreensNdNe. .. Number Linking Result Codes Enable/Disable$MBn Modem Baud Rate Nd Dial a Stored NumberRFn CTS/RTS Interaction Control Rn Clear to Send ControlRAn Asymmetrical Bit Rate RDn Square Wave Ring DetectTone-Dial Tn Respond to Remote Digital Loopback SignalSFn DSR/CD Interaction Control $SBn Serial Port Baud RateXn Result Codes and Call Progress Selection Wn Store ConfigurationModem Reset Return to Command ModeAtcr Remote Configuration Escape Sequence +++ATCR Escape CodeBreakatcr Escape Sequence Registers Register Unit Range Default DescriptionTerse Verbose Result CodesNone of the LEDs Light When the Modem Is On TroubleshootingModem Dials But Cannot Connect Modem Disconnects While Online There Are Garbage Characters on the Monitor Appendix a Regulatory Compliance Regulatory ComplianceFCC CFR47 Part 15 Regulation FCC CFR47 Part 68 Telecom USAAAEQ##Txxxx Current Requirements for Label Content and FormatRegulatory Requirements for Canada IC XXXXXX-ZZZZZZZZ Where Industry CanadaTransmit Level -13 dBm Frequency Stability +/-0.01% Appendix B Technical SpecificationsCommand Buffer 60 characters Manual Control Power switchAppendix C Warranty and Service Multi-Tech Warranty StatementRepair Procedures for U.S. and Canadian Customers Repair Procedures for International Distributors Replacement PartsOnline Warranty Registration About the Internet July Index AT CommandsNone of the LEDs light when the modem is on
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