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ZyXEL Communications U-336R/RE manual Kernel Recovery Mode, Upgrading Your Modem

Models: U-336R/RE

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10.When the installation is complete, the modem restarts automatically.

Kernel Recovery Mode

Your modem is equipped with ZyXEL’s exclusive Kernel Recovery Mode. This unique feature enables quick recovery from failed flash uploads. With other modems, a failed flash upload usually results in the user having to return the modem to the factory for repair.

In the unlikely event that your modem fails to respond to AT commands after upgrading the flash EPROM:

1.Turn off the modem.

2.Press and hold down the A/O button while turning on the modem, then release the button after 5 seconds.

3.A Kernel Program responsible for the update process takes control of the modem. It accepts a limited set of AT commands, including the ATUPX command.

Repeat steps 1 through 6 from the directions above to upload a file that contains valid firmware for your modem.

132 Upgrading Your Modem

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ZyXEL Communications U-336R/RE manual Kernel Recovery Mode, Upgrading Your Modem

Contents

ACCESSING INTERNET & INTRANET ZyXELU-336R/RE User’s Guide Version MarZyXEL Limited Warranty FCC Part 15 Information Copyright 1997 by ZyXELAcknowledgments 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 Modem12 Terminal Pinouts 13 IndexTerminal Blocks PC Serial Port Pinouts Macintosh Serial Port Pinouts Modem Features Standard Features1 Introduction IntroductionIntelligent Features 2 IntroductionTechnical Specifications Fax CompatibilityIntroduction Unpacking Your Modem Enclosed EquipmentRequired Equipment 4 IntroductionBecoming a Registered Owner Introduction6 Introduction 2 Installation InstallationU-336R/RE Modem Card 8 Installation NameBlinking 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 connection12 Installation SettingValue 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 ATEnterDialing using the ATD Command Dialing and Answering TechniquesBasic Modem Operation Making Your First Connection Auto-Answer and Hook Controls18 Basic Modem Operation Quick Tips when issuing AT Commands ATDT17146930762enter Omit the ‘1714’ if you are in this area codeBasic Modem Operation 20 Basic Modem Operation CommandCommand AT Command Set/TypeModem Result Codes Basic Modem OperationViewing S Register Values Changing S Register Values22 Basic Modem Operation Non-Volatile Memory Storing Phone NumbersDialing Stored Phone Numbers Basic Modem OperationSaving Settings and User Profiles Helpful Hints for PC Computers24 Basic Modem Operation Default Modem Settings for PC’s ZyXEL Serial/Parallel I/O CardBasic Modem Operation 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 Operation4 Synchronous Mode Operation V.25bis Command SetSynchronous Mode Operation 30 Synchronous Mode Operation Clock OptionsRTS Options Synchronous Mode OperationCommand State Options Dialing from Synchronous Mode32 Synchronous Mode Operation 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 Dial Backup Dial BackupLeased Line Operation Terminating a Leased Line Connection Aborting from Leased-Line Operation38 Leased Line Operation 6 Special Functions Security FunctionsLevels of Security Special FunctionsUser Passwords 40 Special FunctionsCommand FunctionSpecial Functions 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 7 Fax Operation Modem as Fax MachineFax Operation Fax Command sets Defining the Fax Command SetsITU-T T.30 Fax Protocol 54 Fax OperationClass 1 Command Set Fax OperationClass 2 Command Set +FTH and +FRH support value 3 V.21 ch. 2 / 300 bps only56 Fax Operation 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 Function#Pstring 72 Fax OperationStatus Report Result Codes Snnnn PstringCONNECT FAX/SnnnnVnTnRnLnCnPstring FieldFlow Control 74 Fax OperationFax Reception from a BBS Error LevelString Fax Operation76 Fax Operation 1 ZyXEL8 AT Command Set Summaries Basic AT Command SetAT Command Set Summaries 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 Outstanding82 AT Command Set Summaries Output ParameterOutput Value Description 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 Codes94 Status Registers & Result Codes CommandFunction and description Command Function and descriptionStatus Registers & Result Codes 96 Status Registers & Result Codes CommandFunction and description Command Function and descriptionStatus Registers & Result Codes 98 Status Registers & Result Codes CommandFunction and description Command Function and descriptionStatus Registers & Result Codes 100 Status Registers & Result Codes CommandFunction and description Command Function and descriptionStatus Registers & Result Codes 102 Status Registers & Result Codes CommandFunction and description Command Function and descriptionStatus Registers & Result Codes 104 Status Registers & Result Codes CommandFunction and description Command Function and descriptionStatus Registers & Result Codes 106 Status Registers & Result Codes CommandFunction and description Command Function and descriptionStatus Registers & Result Codes 108 Status Registers & Result Codes CommandFunction and description Command Function and descriptionStatus Registers & Result Codes 110 Status Registers & Result Codes CommandFunction and description Result Code Options ATXn Result Code Option TableStatus Registers & Result Codes 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 10 Diagnostics & Troubleshooting Diagnostics116 Diagnostics & Troubleshooting 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 LineTrouble Shooting AT Command Set Problems126 Diagnostics & Troubleshooting Your modem fails to execute AT commands Diagnostics & TroubleshootingCommand Echo Problems Answer Problems128 Diagnostics & Troubleshooting Dialing Problems Diagnostics & TroubleshootingData Transfer Problems Connect Problems130 Diagnostics & Troubleshooting 11 Upgrading Your Modem Upgrading by Flash EPROMUpgrading Your Modem Kernel Recovery Mode 132 Upgrading Your Modem12 Terminal Pinouts Terminal BlocksTerminal Pinouts PC Serial Port Pinouts 134 Terminal PinoutsMacintosh Serial Port Pinouts Terminal Pinouts136 Terminal Pinouts 13 Index Index138 Index