Multi-Tech Systems BA-Series manual Apendix C AT Command Summary, Appendix C AT Command Summary

Page 87

 

 

Appendix C - AT Command Summary

 

Apendix C - AT Command Summary

Command

Values

Description

AT

 

Attention Code that precedes most command strings

 

 

except A/, A: and Escape Codes.

RETURN

 

Pressing RETURN key executes most commands.

$

 

This symbol placed in dialing string enables the

 

 

modem to detect AT&T's "call card" tones for

 

 

accessing user's calling card to originate an on-line

 

 

connection.

A

 

Answer call, even if no ring present. Repeat last

 

 

command. (Do not precede this command with AT.

 

 

Do not hit RETURN to execute.)

A:

 

Continuous redial (10 redials in DOC units) of last

 

 

number until answered. (Not used Internationally.)

$An

n = 0 or 1

* $A0 discards data during auto-reliable time period.

 

 

$A1 buffers data during auto-reliable time period.

#An

n = 0 thru 3

* #A0 selects initial handshake at:33,600 to 31,200 to

 

 

28,800 to 24000 to 21,600 to 19,200 to 16,800 to

 

 

14,400 to 12,000 to 9600 to 4800 to 2400 to 1200 to

 

 

300 bps.

 

 

#A1 selects initial handshake at 33,600 bps only.

 

 

#A2 selects initial handshake at 33,600 to 31,200 to

 

 

28,800 to 24000 to 21600 to 19,200 to 16,800

 

 

19,200 to 14,400 to 9600 to 4800 bps.

 

 

#A3 selects initial handshake at 2400 to 1200 to 300

 

 

bps.

 

 

* Factory Default Setting

Bn

n = 0 or 1

* B0 selects V.21 answer tone.

 

 

B1 selects Bell answer tone.

&Bn

n = 0 or 1

* &B0 means normal transmit buffer size.

 

 

&B1 means reduced transmit buffer size.

&BSn

n = 0 or 1

&BS0 means maximum transmit block size of 64

 

 

characters.

 

 

* &BS1 means maximum transmit block size of 256

 

 

characters.

$BAn

n = 0 or 1

* $BA0 means speed conversion is on.

 

 

$BA1 means speed conversion is off.

&Cn

n = 0,1,2,4

&C0 forces Carrier Detect on.

 

 

* &C1 lets Carrier Detect act normally.

 

 

&C2 lets Carrier Detect drop S24 time on

 

 

disconnect.

 

 

&C4 resets modem when Carrier Detect drops.

&CDn

n = 0 or 1

* &CD0 execute cleardown on disconnect.

 

 

&CD1 do not execute cleardown on disconnect.

Ds

s = phone #

Dial a telephone number “s,” where s may include

 

 

up to 60 digits or T, P, R, comma and ; characters.

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Contents User Guide Record of Revisions User GuideContents Index 106 Introduction and Description Introduction How To Use This ManualWarranty, Service & Technical Support Modem FeaturesCallback and Remote Configuration DIP-SwitchesFax Features 1 2834 Series FeaturesTechnical Specifications Power MT2834 LED Display Modem LED IndicatorsControls on PC Board Installation and Connection Installation What is in Your Modem Package?Step Procedure Safety WarningsInstallation Procedure Installation and ConnectionMultiModemBA/BAI Connections Installing Data Communications SoftwareSoftware Configuration and Modem Basics AT &F X4 S0=0 M Configuring Your SoftwareConfiguring Software for Your Modem PC Initialization StringsOther Parameters Changing Default ParametersConfiguring Software for Your Computer Configuring Software for the Remote SystemFile Transfer Protocols Terminal EmulationCommand Mode Functional Modes AT Command EditingCommand Mode Summary of AT CommandsStore Modem Configure Data Result Codes Multi-Tech Result CodesStandard AT Result Codes Dialing a Stored Number N Dialing Commands Dialing Action CommandsDial Command D Continuous Redial not used in BAI a orPulse or Tone Dial P T Dial Modifier CommandsDTR Dialing $D Voice/Data Dialing $VDAutomatic Pauses in Dialing Return to Command Mode After Dial Command ExecutionReverse the Mode of Operation R Set Pulse Dial Ratios &PQuiet Answer @ Phone Number Memory CommandsFlash On Hook Calling Card Detect Tones $Configuration and Default Storage Commands Number Linking NNListing Numbers Stored in Memory L Unix Uucp Spoofing $SP Loading Factory Defaults &FModem Reset Z Async/Sync Mode Switching &MResult Codes Multi-Tech or Standard AT &Q Command Response Result Code CommandsEcho Command Mode Characters E Result Codes Enable/Disable and No Response Answer QPhone Line Conditioning Commands Result Codes Basic and Extended and Call Progress SelectionGuard Tones Not Used in BAI Models &G Phone Line Monitoring Speaker M Enable/Disable Trelis Coded Modulation #TFallback Modes When On-Line #F Bell/V.21 ToneAuto Speed Detect #A 7 RS-232C Interface Control CommandsEnable/Disable Lowspeed Fast Connect $FC Cleardown at Disconnect &CDCTS/RTS Interaction Control &RF Data Terminal Ready Control &DCTS Control &R Data Set Ready Control &SError Correction Commands Auto-Reliable Buffering $A Enable/Disable Auto Reliable Fallback Character $FFlow Control Commands Error Correction/300bps $ERetransmit Count $R Hardware Flow Control &E4 Xon/Xoff Flow Control &E5Xon/Xoff Pass-Through &E7 Terminal/Computer Initiated Pacing &E13 Normal Mode Modem Flow Control On &E11Send Xon/Xoff Characters #X Hewlett-Packard ENQ/ACK Pacing &E9Parity Selection #P Normal/Auto-Reliable/Reliable Mode CommandsXon/Xoff Pass-Through Commands Enq/Ack Pacing CommandsSpeed Conversion Commands Speed Conversion $BAModem Baud Rate $MB Serial Port Baud Rate $SB Immediate Action Commands Off Hook H Force Answer Mode aFormat of Line Probe Graph or Table Commands Line Probe CommandsExiting Command Mode, Going Back On-Line O Enable/Disable Reading of Line Probe Information CommandsRegisters Return Character Number of Rings Until Modem AnswersRings Which Have Occurred Escape Code CharacterWait Time for Dial Tone Time for Carrier Abort TimerLine Feed Character Backspace CharacterS11 Tone Dialing Tone Spacing and Duration S10 Carrier Loss Disconnect Delay TimeS13 Remote Configuration Escape Character Carrier Detect Response TimeS24 PBX/CBX Disconnect Drop Time for DSR/CTS/CD S15 Callback Time DelayS16 Callback Attempts S17 Changing Break TimeS32 Time Elapse for Escape Sequence S26 Failed Password AttemptsS29 Local Inactivity Timer S30 Inactivity TimerS48 Program V.34bis Connect Speeds 2834 Series only Reading and Assigning S-Register ValuesS36 Time Between DTR Inactive and Modem Off-Hook S37 Time Between DTR Active and Modem On-HookAT Command and S-Register Summary Examples of Assigning ValuesExamples of Reading Values Callback Security and Remote Configuration Remote Configuration Description Callback Feature DescriptionTo change your Remote Configuration feature status To turn your modems Callback Security feature on and offTo set parity of the password/message prompt AT#DB2CR or AT#DB1CR Remote Configuration Operation Procedures StepProcedure Remote Configuration ProceduresCallback Security and Remote Configuration Callback Operational Sequence ProceduresAT#I=yyyyyyyyyyCR Remote Configuration and Callback Security AT CommandsCallback Security Enable/Disable Change Login PasswordRemote Configuration/Callback Security S-Registers Local Inactivity Timer S29 DIP-Switch Settings PC Board DIP-Switch Option SettingsDIP-Switch Settings Switch #4 AS/400 Mode Synchronous Mode/Leased Line/Dial-UPMultiModemBA User Guide = Down Down Switch #16 Reserved for Future Use Speaker Volume ControlSwitch Function Position Effect Recording Option ConfigurationsDIP Switches #15-16 DIP Switches #13-14Warranty, Service and Tech Support Warranty, Service, and Technical Support Multi-Tech Systems, Inc. Warranty & Repairs PoliciesRepair Procedures for International Distributors Online Warranty RegistrationCountry Telephone Replacement PartsTechnical Support Internet SitesAppendixes Appendix a Upgrading Your Modem’s Firmware Upgrade OverviewDownload the Upgrade File Upgrade the Modem’s Firmware Appendix B Troubleshooting None of the LEDs Light When the Modem Is OnModem Does Not Respond to Commands Appendix B Troubleshooting Modem Dials But Cannot Make a Connection Am Losing Data Modem Cannot Connect When AnsweringModem Disconnects While On-line File Transfer Is Slower Than It Should BeAm Getting Garbage Characters on the Monitor Apendix C AT Command Summary Appendix C AT Command SummaryCommand Values Description SN d MultiModemBA User Guide Command Values Description$Fn RF n $SBn Break Atcr Callback Security/Remote Configuration Command Summary Password Command Summary Command Description #Ixxxxxxxxxx#Syyyyyyyyyy 25bis Commands Delayed and Forbidden Numbers Appendix D V.25bis Operation25bis Operation Appendix D V.25bis Operation 25bis Mode AT Commands25bis DIP-Switches 25bis Set-Up and Initialization25bis Responses Result Codes 25bis AT CommandsEnable/Disable V.25bis Mode $V Command Change Serial Baud Rate CSP CommandDisregard or Connect to Incoming Calls DIC or CIC Command Dial Phone Number Provided CRN CommandListing Delayed Phone Numbers RLD Command Listing Forbidden Phone Number RLF CommandSwitzerland DTR Dialing $D CommandITU V.25bis Country Specific Information ItalySingapore Appendix E MultiModemBA Cables AustriaFrance BelgiumFigure E-1. RS232 Cable IBM PC Appendix E MultiModemBA CablesIndustry Canada Appendix F Regulatory Information FCC PartFCC Part 68 Telecom Appendix F Regulatory Information104 Canadian Limitations NoticeEMC, Safety, and R&TTE Directive Compliance International Modem Restrictions105 106 Index107 Index108 PBX/CBX Disconnect Drop Time for DSR/CTS/CD53109