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ZyXEL Communications U-336R/RE manual Command Echo Problems, Answer Problems

Models: U-336R/RE

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Problem

You receive the ERROR result code after typing an AT command.

Solution

You may have typed a command that is not recognized by your modem or communications software.

Command Echo Problems

Problem

You do not see any typed characters on your computer screen.

Solutions

1.Make sure the DTR LED is ON. If it is OFF, make sure your communications software is using the same COM port as your modem.

2.Neither your modem nor your communications software is configured to echo characters. Use the E1 command to enable modem echo, or turn on your software program’s Echo (or duplex) feature.

Problem

Each character you type appears twice on your computer screen.

Solution

Both your modem and your communications software are echoing characters to your screen. Use the E0 command to disable modem echo, or turn off your software program’s echo (or duplex) feature.

Answer Problems

Problem

Your modem does not auto-answer incoming calls.

Solutions

1.Make sure the supplied telephone cable is connected to your modem’s LINE jack and not the PHONE jack.

128 Diagnostics & Troubleshooting

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ZyXEL Communications U-336R/RE manual Command Echo Problems, Answer Problems, Diagnostics & Troubleshooting

Contents

ACCESSING INTERNET & INTRANET ZyXELU-336R/RE User’s Guide Version MarZyXEL Limited Warranty Acknowledgments FCC Part 15 InformationCopyright 1997 by ZyXEL Information for Canadian Users Page Contacting ZyXEL ∙ E-mailZyXEL Communications Corporation Contents 2 Installation1 Introduction 3 Basic Modem Operation4 Synchronous Mode Operation 5 Leased Line Operation6 Special Functions 7 Fax Operation8 AT Command Set Summaries 10 Diagnostics & Troubleshooting9 Status Registers & Result Codes 11 Upgrading Your ModemTerminal Blocks PC Serial Port Pinouts Macintosh Serial Port Pinouts 12 Terminal Pinouts13 Index Modem Features Standard Features1 Introduction IntroductionIntelligent Features 2 IntroductionIntroduction Technical SpecificationsFax Compatibility Unpacking Your Modem Enclosed EquipmentRequired Equipment 4 IntroductionBecoming a Registered Owner Introduction6 Introduction U-336R/RE Modem Card 2 InstallationInstallation Blinking 8 InstallationName Required Steps for U-336R/RE Installation InstallationInstalling the modem card 10 InstallationConnect to phone lines ∙ U-336R Section 2 terminals 3 & 4 For dial-up lineHooking Up Power Fax/Modem Communication Software InstallationConnect to Computers ∙ U-336R Section 3 terminals 5 ,6 ,7 & 8 For leased line connectionValue 12 InstallationSetting 10 for troubleshooting suggestions Installation14 Installation Understanding AT Commands Using the Windows 95 Hyper Terminal Program3 Basic Modem Operation Basic Modem Operation16 Basic Modem Operation ATEnterBasic Modem Operation Dialing using the ATD CommandDialing and Answering Techniques 18 Basic Modem Operation Making Your First ConnectionAuto-Answer and Hook Controls Basic Modem Operation Quick Tips when issuing AT CommandsATDT17146930762enter Omit the ‘1714’ if you are in this area code 20 Basic Modem Operation CommandCommand AT Command Set/TypeModem Result Codes Basic Modem Operation22 Basic Modem Operation Viewing S Register ValuesChanging S Register Values Non-Volatile Memory Storing Phone NumbersDialing Stored Phone Numbers Basic Modem Operation24 Basic Modem Operation Saving Settings and User ProfilesHelpful Hints for PC Computers Basic Modem Operation Default Modem Settings for PC’sZyXEL Serial/Parallel I/O Card Special AT Command Settings for Macintosh Helpful Hints for Macintosh ComputersMacintosh Serial Port Mac Software TipsBasic Modem Settings for UNIX Helpful Hints for UNIX-Based ComputersSerial Cable Basic Modem OperationUnix Software Tips 28 Basic Modem OperationSynchronous Mode Operation 4 Synchronous Mode OperationV.25bis Command Set 30 Synchronous Mode Operation Clock OptionsRTS Options Synchronous Mode Operation32 Synchronous Mode Operation Command State OptionsDialing from Synchronous Mode Answering from Synchronous Mode Auto-AnswerManual Answer Synchronous Mode Operation34 Synchronous Mode Operation Connecting to a Leased Line Line Type Setting5 Leased Line Operation Leased Line OperationPower Level Setting Leased Line HandshakingManual Connect Auto HandshakeLeased Line Operation Leased-Line Dial BackupDial Backup 38 Leased Line Operation Terminating a Leased Line ConnectionAborting from Leased-Line Operation 6 Special Functions Security FunctionsLevels of Security Special FunctionsUser Passwords 40 Special FunctionsSpecial Functions CommandFunction Remote Configuration 42 Special FunctionsAT*Rab AT*WabCaller Number Delivery Caller ID Special Functions44 Special Functions RING TIME MM-DD hhmm CALLER NUMBER CALLERID or CALLER NAMECALLERNMRING RING TIME 04-28 CALLER NUMBER 7135551414 or CALLER NAMEHere is an example Special FunctionsDistinctive Ring 46 Special FunctionsExtended Distinctive Ring EDR TypeRing Sequence Special Functions48 Special Functions Once enabled with the proper settings, EDR canSetting Up EDR Special FunctionsEDR Application Example 50 Special FunctionsSave the settings in a profile and reset the modem with AT&WZ Special Functions52 Special Functions Fax Operation 7 Fax OperationModem as Fax Machine Fax Command sets Defining the Fax Command SetsITU-T T.30 Fax Protocol 54 Fax OperationClass 1 Command Set Fax Operation56 Fax Operation Class 2 Command Set+FTH and +FRH support value 3 V.21 ch. 2 / 300 bps only value +FCIG=stringCommand Syntax Command+FDCC=vr,br,wd ln,df,ec,bf,st58 Fax Operation Command+FDCS=vr,br,wd +FDIS=vr,br,wd,ln,df,ec,bf,st +FDT=df,vr,wd+FLID=string 60 Fax OperationCommand ValueCommand Class 2 Command ResponsesValue Description62 Fax Operation Class 2 Flow ControlClass 2.0 Command Set +FCC=vr,br,wd,ln,df,ec,bf,st Supported Commands64 Fax Operation CommandValue Description+FIS=vr,br,wd +FLI=stringtpr,idr,nsr ln,df,ec,bf,st+FNS=string +FPI=string+FRQ=pgl,cbl 66 Fax OperationCommand Class 2.0 Command ResponsesValue Description68 Fax Operation ResponseValue Function and DescriptionResponse ValueFunction and Description Fax OperationExtended Fax AT Command Set 70 Fax OperationCommand CommandParameter Setting FunctionStatus Report Result Codes #Pstring72 Fax Operation Snnnn PstringCONNECT FAX/SnnnnVnTnRnLnCnPstring FieldFlow Control 74 Fax OperationFax Reception from a BBS Error LevelString Fax Operation76 Fax Operation 1 ZyXELAT Command Set Summaries 8 AT Command Set SummariesBasic AT Command Set 78 AT Command Set Summaries CommandOptions Function & DescriptionCommand AT Command Set SummariesOptions Function & Description80 AT Command Set Summaries Description of ATI2 OutputAT Command Set Summaries Max OutstandingOutput Value Description 82 AT Command Set SummariesOutput Parameter Extended AT& Command Set CommandAT Command Set Summaries Output Parameter84 AT Command Set Summaries CommandOptions Function & DescriptionCommand AT Command Set SummariesOptions Function & Description86 AT Command Set Summaries CommandOptions Function & DescriptionCommand AT Command Set SummariesOptions Function & Description88 AT Command Set Summaries CommandOptions Function & DescriptionExtended AT* Command Set CommandCommand AT Command Set Summaries90 AT Command Set Summaries CommandOptions Function & DescriptionCommand AT Command Set SummariesOptions Function & Description9 Status Registers & Result Codes S-Register DescriptionsBasic S-Registers ATSn=x 92 Status Registers & Result CodesExtended S-Registers ATSn=x Status Registers & Result CodesFunction and description 94 Status Registers & Result CodesCommand Status Registers & Result Codes CommandFunction and description Function and description 96 Status Registers & Result CodesCommand Status Registers & Result Codes CommandFunction and description Function and description 98 Status Registers & Result CodesCommand Status Registers & Result Codes CommandFunction and description Function and description 100 Status Registers & Result CodesCommand Status Registers & Result Codes CommandFunction and description Function and description 102 Status Registers & Result CodesCommand Status Registers & Result Codes CommandFunction and description Function and description 104 Status Registers & Result CodesCommand Status Registers & Result Codes CommandFunction and description Function and description 106 Status Registers & Result CodesCommand Status Registers & Result Codes CommandFunction and description Function and description 108 Status Registers & Result CodesCommand Status Registers & Result Codes CommandFunction and description Function and description 110 Status Registers & Result CodesCommand Status Registers & Result Codes Result Code OptionsATXn Result Code Option Table 112 Status Registers & Result Codes Result Code Chart Symbol ReferenceConnect Strings for Error Corrected Connections Result Code Field DescriptionsExample CONNECT 38400/V.32bis 14400/V.42bis Status Registers & Result Codes114 Status Registers & Result Codes NumericalVerbose NumericalStatus Registers & Result Codes 116 Diagnostics & Troubleshooting 10 Diagnostics & TroubleshootingDiagnostics Power-On Self Test Diagnostics & Troubleshooting118 Diagnostics & Troubleshooting Loopback TestsIndicator Lights Diagnostics & TroubleshootingRetransmission Indicator Remote Digital Loopback Test AT&T6120 Diagnostics & Troubleshooting Line Condition Status DisplayDiagnostics & Troubleshooting Received Signal Power Level RXPhase Jitter PJ Round Trip Echo Delay ED122 Diagnostics & Troubleshooting Link Status Report ATI2Diagnostics & Troubleshooting Characters sent from the DTE to the modem for transmission124 Diagnostics & Troubleshooting Characters received by the modem from the line and sent to the DTEDiagnostics & Troubleshooting ∙ Local Hang-up ∙ Remote Hang-up ∙ Carrier Lost ∙ On Line126 Diagnostics & Troubleshooting Trouble ShootingAT Command Set Problems Your modem fails to execute AT commands Diagnostics & Troubleshooting128 Diagnostics & Troubleshooting Command Echo ProblemsAnswer Problems Dialing Problems Diagnostics & Troubleshooting130 Diagnostics & Troubleshooting Data Transfer ProblemsConnect Problems Upgrading Your Modem 11 Upgrading Your ModemUpgrading by Flash EPROM Kernel Recovery Mode 132 Upgrading Your ModemTerminal Pinouts 12 Terminal PinoutsTerminal Blocks PC Serial Port Pinouts 134 Terminal PinoutsMacintosh Serial Port Pinouts Terminal Pinouts136 Terminal Pinouts 13 Index Index138 Index