Dialing Problems | ZyXEL Communications U-336R/RE instruction

2.Your modem may not be set up for auto-answer. With the modem in command state, type ATS0=1 and press Enter to have the modem answer on the first incoming ring. To auto- answer after a specific number of rings, replace 1 with a value up to 255. Do not assign a value of 0, which turns off auto- answer, unless your software can respond to the modem’s RING result codes.

3.Check that the DTR LED is ON, and that the RI LED flickers with each incoming ring. If the LEDs do not respond in this way, refer to your ZyXEL Modem Reference Manual.

4.Set &D0 and auto answer, if your modem is not connected to RS232 or DTR is not ready.

Problem

When you receive a phone call, your modem immediately seizes control of the telephone line.

Solution

Your modem may be configured for auto-answering. To disable auto-answer, type ATS0=0 and press Enter with the modem in command state.

Dialing Problems

Problem

Your modem does not dial calls.

Solutions

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

∙You are using touch-tone dialing on a line that requires pulse dialing. Change your communications software to use pulse dialing.

Diagnostics & Troubleshooting 129

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ZyXEL Communications U-336R/RE manual Dialing Problems

Contents

ZyXEL ZyXEL Limited Warranty Copyright 1997 by ZyXEL FCC Part 15 InformationAcknowledgments Iii Information for Canadian Users Page ∙ E-mail Contacting ZyXEL Vii Contents Leased Line Operation Synchronous Mode Operation Fax Operation Special Functions Diagnostics & Troubleshooting AT Command Set SummariesStatus Registers & Result Codes Upgrading Your Modem Terminal Pinouts IndexXii Modem Features Standard FeaturesIntroduction Intelligent Features Fax Compatibility Technical Specifications Unpacking Your Modem Enclosed EquipmentRequired Equipment Becoming a Registered Owner Introduction Installation Installation336R/RE Modem Card Name Blinking RXD TXDDTR DSR Required Steps for U-336R/RE Installation Connect to phone lines Installing the modem card Hooking Up Power Fax/Modem Communication Software InstallationConnect to Computers AT&F Setting Value For troubleshooting suggestions Installation Using the Windows 95 Hyper Terminal Program Understanding AT CommandsBasic Modem Operation Basic Modem Operation ATEnter Dialing and Answering Techniques Dialing using the ATD Command Auto-Answer and Hook Controls Making Your First ConnectionATS0=n ATS0=0 Quick Tips when issuing AT Commands AT Command Set/Type Example Command Description Modem Result Codes Changing S Register Values Viewing S Register Values Storing Phone Numbers Non-Volatile MemoryDialing Stored Phone Numbers AT&Zs=n Helpful Hints for PC Computers Saving Settings and User Profiles Default Modem Settings for PC’s AT Command DescriptionZyXEL Serial/Parallel I/O Card Helpful Hints for Macintosh Computers Special AT Command Settings for MacintoshMacintosh Serial Port Mac Software Tips Basic Modem Settings for Unix Helpful Hints for UNIX-Based ComputersSerial Cable Unix Software Tips Synchronous Mode Operation 25bis Command SetSynchronous Mode Operation Clock Options Syntax Command with Description Parameters RTS Options Dialing from Synchronous Mode Command State OptionsSync AT&M1 Data Answering from Synchronous Mode Auto-AnswerManual Answer Synchronous Mode Operation Line Type Setting Connecting to a Leased LineAT-Command Description Leased Line Operation Leased Line Handshaking Power Level SettingManual Connect Auto Handshake Dial Backup Leased-Line Dial BackupAT*M0 AT*M1 Aborting from Leased-Line Operation Terminating a Leased Line Connection Security Functions Special FunctionsLevels of Security Special Functions User Passwords Enters the callback number Command Function Remote Configuration AT*RabAT*Wab Caller Number Delivery Caller ID Ring Here is an example Distinctive Ring Type Bit Ring Sequence Extended Distinctive Ring EDR Special Functions S51 Bit-mapped register default Bits Bin Dec Description Setting Up EDR CID/EDR RD EDR Application Example Special Functions Special Functions Fax Operation Modem as Fax MachineFax Operation Fax Command sets Defining the Fax Command SetsITU-T T.30 Fax Protocol Command Value Description Class 1 Command Set +FTH and +FRH support value 3 V.21 ch / 300 bps only Class 2 Command Set Command Syntax Description Value+FCIG=string Ln,df,ec,bf,st +FDCC=vr,br,wd +FDIS=vr,br,wd,l +FDCS=vr,br,wdDf,ec,bf,st +FDR +FLID=string +FK+FMDL? +FMFR? +FREV? Response Value Function and Description+FCFR +FVOICE +FPOLL +FBS? Class 2.0 Command Set+FCC=vr,br,w +FCO +FDT +FIS=vr,br,wd +FLI=stringTpr,idr,nsr +FPI=string +FNS=stringDCE +FRQ=pgl,cbl +FCICSI ID HEX +FNC A0-BFNSC FIF +FNF NSS FIF +FNS+FPI CIG ID Extended Fax AT Command Set Modem will wait for DC2 at the beginning of every No Dial #PstringTone No Carrier Busy Field Description SnnnnPstring Flow Control String Error Level Fax Reception from a BBSConnect Init AT&FX7S0=1#B1+FCLASS=6 ExtrnMail ZyXEL errorlevel Basic AT Command Set AT Command Set SummariesCommand Options Function & Description AT Command Set Summaries Command Options Function & Description UPX Link Status Report output appears as follows Description of ATI2 Output Output Parameter Output Value Description Data Type Description DTE DTE/DCE Extended AT& Command Set Command Options Function & Description Command Options Function & Description Command Options Function & Description Command Options Function & Description Command Options Function & Description Extended AT* Command Set Command Options Function & Description Command Options Function & Description Status Registers & Result Codes Command Function & Description +RefRegister Descriptions Basic S-Registers ATSn=x Extended S-Registers ATSn=x Command Bit Dec Hex Function and description Command Bit Dec Hex Function and description Command Bit Dec Hex Function and description Command Bit Dec Hex Function and description Command Bit Dec Hex Function and description ATX1 ATX2 ATX3 ATX4 Command Bit Dec Hex Function and description Command Bit Dec Hex Function and description Command Bit Dec Hex Function and description Command Bit Dec Hex Function and description ATA Command Bit Dec Hex Function and description Command Bit Dec Hex Function and description Command Bit Dec Hex Function and description Command Bit Dec Hex Function and description Command Bit Dec Hex Function and description Command Bit Dec Hex Function and description Register bit number, b, used in ATSr.b=n ATSr.b=? Result Code Options ATXn Result Code Option Table+nnn Supported Result Code Field Descriptions Connect Strings for Error Corrected ConnectionsField Name Possible Values Numerical Verbose 24000 Status Registers & Result Codes Diagnostics & Troubleshooting DiagnosticsDiagnostics & Troubleshooting Power-On Self Test FR Calibration Loopback Tests Indicator Lights Line Condition Status Display Received Signal Power Level RX Link Status Report ATI2 Characters sent from the DTE to the modem for transmission Data bytes sent to the remote modem ∙ Local Hang-up ∙ Remote Hang-up ∙ Carrier Lost ∙ On Line AT Command Set Problems Trouble Shooting Your modem fails to execute AT commands Answer Problems Command Echo Problems Dialing Problems Connect Problems Data Transfer Problems Upgrading by Flash Eprom Upgrading Your ModemType ATUPXenter Upgrading Your Modem Kernel Recovery Mode Terminal Blocks Terminal PinoutsTIP Terminal Pinouts PC Serial Port Pinouts Pin/Signal Direction DescriptionSigna Name Mac Modem Description Din Macintosh Serial Port Pinouts Terminal Pinouts Index Index Smartdrv