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ZyXEL Communications U-336R/RE User Manual

ZyXEL Communications U-336R/RE User Manual

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U-336R/RE
User's Guide
Version 1.0
(Mar. 1997)
ZyXEL
A
I
& I
CCESSING
NTERNET
NTRANET

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Summary of Contents for ZyXEL Communications U-336R/RE

  • Page 1 U-336R/RE User’s Guide Version 1.0 (Mar. 1997) ZyXEL & I CCESSING NTERNET NTRANET...

  • Page 2: Zyxel Limited Warranty

    ZyXEL Limited Warranty ZyXEL warrants to the original end user (purchaser) that this product is free from any defects in materials or workmanship for a period of up to two (2) years from the date of purchase. During the warranty period, and upon proof of purchase, should the product have indications of failure due to faulty workmanship and/or materials, ZyXEL will, at its discretion, repair or replace the defective products or components without charge for either parts or...

  • Page 3: Fcc Part 15 Information

    The contents of this book may not be reproduced (in any part or as a whole) or transmitted in any form or by any means without the written permission of the publisher. Published by ZyXEL Communications Corporation. All rights reserved. Note: ZyXEL does not assume any liability arising out of the application or use of any products, or software described herein.

  • Page 4: Information For Canadian Users

    and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. If this equipment does cause harmful interference to radio/television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna.
  • Page 5 company’s inside wiring associated with a single line individual service may be extended by means of a certified connector assembly. The customer should be aware that the compliance with the above conditions may not prevent degradation of service in some situations. Repairs to certified equipment should be made by an authorized Canadian maintenance facility designated by the supplier.

  • Page 6: Contacting Zyxel

    Contacting ZyXEL If you have questions about your ZyXEL product or desire assistance, contact ZyXEL Communications Corporation in one of the following ways: Phone: In North America call between 8:00 AM and 5:00 PM PST at (714) 693-0808 Outside North America, you can dial +886-3-5783942 EXT 252 between 8:00AM and 5:00PM Taiwan time (GMT +8:00).
  • Page 7 For European and Asian versions and related files, use the address: ftp.zyxel.co.at Postal Service: You can send written communications to the following address: ZyXEL Communications Corporation 6, Innovation Road II, Science-Based Industrial Park Hsinchu, Taiwan 300, R.O.C. ZyXEL Communications Inc.

  • Page 8: Table Of Contents

    Contents ZyXEL Limited Warranty ii FCC Part 15 Information iii Information for Canadian Users iv Contacting ZyXEL vi 1 Introduction 1 What This Manual Covers 1 Modem Features 1 Standard Features 1 Intelligent Features 2 Fax Compatibility 3 Technical Specifications 3 Unpacking Your Modem 4 Enclosed Equipment 4 Required Equipment 4...
  • Page 9 Dialing using the ATD Command 17 Auto-Answer and Hook Controls 18 Making Your First Connection 18 Quick Tips when issuing AT Commands 19 Modem Result Codes 21 Viewing S Register Values 22 Changing S Register Values 22 Non-Volatile Memory 23 Storing Phone Numbers 23 Dialing Stored Phone Numbers 23 Saving Settings and User Profiles 24...
  • Page 10 Connecting to a Leased Line 35 Line Type Setting 35 Power Level Setting 36 Leased Line Handshaking 36 Manual Connect 36 Auto Handshake 36 Leased-Line Dial Backup 37 Dial Backup 37 Aborting from Leased-Line Operation 38 Terminating a Leased Line Connection 38 6 Special Functions 39 Security Functions 39 Levels of Security 39...
  • Page 11 8 AT Command Set Summaries 77 Basic AT Command Set 77 Description of ATI2 Output: 80 Extended AT& Command Set 83 Extended AT* Command Set 89 9 Status Registers & Result Codes 92 S-Register Descriptions 92 Basic S-Registers "ATSn=x" 92 Extended S-Registers "ATSn=x"...
  • Page 12 12 Terminal Pinouts 133 Terminal Blocks 133 PC Serial Port Pinouts 134 Macintosh Serial Port Pinouts 135 13 Index 137...

  • Page 13: Introduction

    Introduction What This Manual Covers Congratulations on the purchase of your U-336R/RE modem - one of ZyXEL's premier high-performance products. The U-336R/RE modem cards are world renown for their ability to maintain ultra high speeds and clear, quality connections while communicating around the globe.

  • Page 14: Intelligent Features

    14 LED indicators (RE/RD). 15 LED indicators (R). Extended AT command set with V.25bis. Operates on 2-wire dial-up or 2-wire leased line (RE). Operates on 2-wire dial-up or 2/4-wire leased line (R). Intelligent Features Automatic data, and fax call detection allows you to use a single telephone line to handle both voice and data calls.

  • Page 15: Fax Compatibility

    EDR (extended Distinctive Ring). Flash EPROM memory lets you easily upload new firmware, providing you with easy access to new features. ZyXEL exclusive Kernel Recovery Mode for no hassle recovery from failed flash uploads - no factory repairs. Fax Compatibility EIA Class 1, 2, and 2.0 Fax commands.

  • Page 16: Unpacking Your Modem

    Line interface: 2-wire dial-up or 2-wire leased line (RE). Line interface: 2-wire dial-up or 2/4-wire leased line (R). Call progress monitoring: dial tone, busy, and ring back detection. Audio Monitor: programmable volume control. Unpacking Your Modem Enclosed Equipment Before you proceed further, please check all items you received with your modem against this list to make sure nothing is missing.

  • Page 17: Becoming A Registered Owner

    Computer terminal. Available PC serial port with a high-speed 16550 UART. Standard "straight-through” RS-232 cable (pins 1-8, 20, 22). Available telephone jack. Available AC wall outlet. Telephone line from your telephone company (dial-up or leased line). Data and fax communication software. Becoming a Registered Owner Complete the pre-addressed Warranty Registration Card and place it in the mail.
  • Page 18 6 Introduction...

  • Page 19: Installation

    Installation This chapter covers the steps required to install your U-336R/RE modem into a ZyXEL RS-1612 rack system. A separate comprehensive manual containing rack system information is included with your modem rack chassis. U-336R/RE Modem Card The U-336R front panel consists of fifteen LED indicators and two switches.
  • Page 20 Name Blinking Transmit The DTE is sending Indicator data to modem for transmission. Receive The modem is Indicator sending received data to the DTE. Carrier Detect The modem senses a valid data carrier on the line. Data Terminal The attached Ready computer is ready to send or receive data.

  • Page 21: Required Steps For U-336R/Re Installation

    Name Blinking Signal Quality Modem senses a Modem good quality signal. senses marginal signal quality. The following LED is for the U-336R only: Name Blinking Leased Line Modem is in Leased Mode Indicator Line Mode. There are two toggle switches on the U-336R/RE front panel.VOICE/DATA Toggles the modem on-line (off-hook, DATA) or off-line (on-hook, VOICE mode, the telephone set is connected to the line).

  • Page 22: Installing The Modem Card

    Installing the modem card The rack system in which you will install your modem has sixteen available modem slots. You may use any slot for a card without regard to the slot number or sequence. To install a card: 1. Hold the modem card by the front and slide it into an available slot.

  • Page 23: Connect To Computers

    U-336R Section 3 (terminals 5 ,6 ,7 & 8) For leased line connection. Connect to Computers Each modem slot has a corresponding 25-pin RS-232 female connector on the rear panel. Connect a cable from the desired computer to the RS-232 connector for the desired modem. Hooking Up Power Connecting power should be the last thing you do before using the rack.
  • Page 24 1496 modem. In many cases, the commands for these modems are identical. Select the following communication settings: Setting Value Baud rate 57,600bps Data bits Parity None Stop bits Flow control Hardware Initialization string AT&F Port COMn* O O N ‘ ’...
  • Page 25 10 for troubleshooting suggestions. Installation 13...
  • Page 26 14 Installation...

  • Page 27: Basic Modem Operation

    Basic Modem Operation This chapter covers the basic commands and techniques involved in modem operation. In many cases, this is the only information you will need in order to get up and running with communication software, and to start making connections with your modem. Understanding AT Commands The U-336R/RE communicates asynchronously with computers using AT commands.
  • Page 28 Terminal” program. This program provides a simple method to manually enter AT commands so you can do such things as “customize” the settings of your modem, or store commonly used phone numbers. Once your modem is connected to your computer’s serial port and telephone line, open the Windows 95 “Accessories”...

  • Page 29: Dialing And Answering Techniques

    Your modem responds: This confirms that the modem and your computer are communicating correctly. To test the telephone line connection issue the manual answer command. Type: ATA<Enter> Your modem will pick up the phone line, and try to communicate. Normally, this command is only used to answer an incoming call made from another modem, thus the high pitched tone you will hear from the speaker.

  • Page 30: Auto-Answer And Hook Controls

    Pausing During Dialing: ATDT 9,,555 1212 O O N S8. D HE PAUSE TIME FOR EACH COMMA IS DEFINED BY EGISTER EFAULT IS SECONDS PER COMMA Dialing Without Waiting for Dial Tone: ATX0D, 555 1212 Originating a call using an Answer Tone: ATDT 555 1212,,,,,,R Redialing the Last Number Called: ATDL Waiting for Five Seconds of Silence:...

  • Page 31: Quick Tips When Issuing At Commands

    Start the terminal program by double-clicking the Test Connection icon. When the terminal window appears, enter the dial command with ZyXEL’s BBS as the phone number. Type: ATDT17146930762<enter> (Omit the ‘1714’ if you are in this area code) The modem will go off-hook, dial the number, and after a few seconds of negotiation tones you should be connected to our BBS.
  • Page 32 terminal window when you type, the modem’s echo setting is probably set to off. In this case, issue the ATE1 command. When a command is successfully issued and accepted, a modem responds with a “Result Code.” Your modem supports both “verbose”...

  • Page 33: Modem Result Codes

    AT Command Set/Type Example S-Register command ATS0=1 S-Register bit-mapped command ATS13.1=1 (set S- Register bit 1 equal to 1) S-Register inquiry command ATS0? Or ATS13.1? You may browse the lists of available commands for each command set by using the on-line help commands: AT$, AT*$, AT&$, and ATS$.

  • Page 34: Viewing S Register Values

    modem uses. By default, your modem uses result codes equivalent to the ATX5 command. The result code options will be covered more thoroughly in later chapters. Viewing S Register Values Status registers (or "S-registers") contain values that determine the modem’s operating characteristics. Whenever you send an AT command to your modem, you are actually changing the value of an S-register.

  • Page 35: Non-Volatile Memory

    Non-Volatile Memory Your modem has an amount of memory set aside for storing user information such as frequently used phone numbers and default command settings. The latter is particularly useful when using your modem to call a variety of different locations that require different settings.

  • Page 36: Saving Settings And User Profiles

    Saving Settings and User Profiles There are some cases where you may wish to save the settings you have made as the default settings that are recalled when your modem is powered up. The AT&WZ command selects the current settings as the power-on profile. There are four profiles that can be changed by the user, and one factory default profile.

  • Page 37: Default Modem Settings For Pc's

    your software supports it, replace the 16450 UART with a 16550 model. This newer chip has an internal buffer and generates an interrupt for up to every 16 characters (several trigger levels are available). With this UART installed, you may drive your serial port at 57600 bps and above.

  • Page 38: Helpful Hints For Macintosh Computers

    The serial port is 16550-compatible for most communication software usage. It has a speed of up to 460.8Kbps and data loss errors will not occur when working with a ZyXEL modem's serial port. This solves high-speed communication problems in Windows and other multi-tasking systems.

  • Page 39: Helpful Hints For Unix-Based Computers

    readily available as PD, shareware or commercial software. One of the most powerful shareware programs available is ZTerm. Fewer programs are available to make use of the ZyXEL's fax features. One program which has found wide acceptance is FaxSTF which can be installed like a printer driver allowing you to send faxes from almost any program which runs on your Macintosh.

  • Page 40: Unix Software Tips

    Depending on your Unix setup, the cable and software used, you may have to disable carrier detection using AT&C0. Unix Software Tips In order to use your ZyXEL modem from a terminal screen or an X-Windows application, you need a program such as Minicom or Seyon.

  • Page 41: Synchronous Mode Operation

    Synchronous Mode Operation This chapter introduces you to the use of the U-336R/RE for synchronous operation. The modem can be used as a synchronous modem when it is connected to a synchronous computer or terminal. It is of course necessary to make sure that the remote modem and system are also set to synchronous mode.

  • Page 42: Clock Options

    Syntax Command with Description Parameters* CRN <dialstring>** Call request with number provided. CRS n Call request with number from memory, 0 # n # 49; n is the memory location. PRN n; <number> Saves <number> to address n (0 # n #49). RLN*** Requests list of all stored numbers.

  • Page 43: Rts Options

    carrier and sends the data to the receiving DTE along with the clock. There are three types of transmission synchronous clock sources to choose from: 1. The internal clock is the one that suits most applications and is the default; in this case, the clock signal is generated by the sending modem.

  • Page 44: Command State Options

    Command State Options For synchronous data communication, there are two options you can choose from to define how the modem will operate in the command state. SYNC AT&M1 The modem accepts asynchronous DATA commands in command state, but exchanges data synchronously in data state.

  • Page 45: Answering From Synchronous Mode

    4. Manual dial: Set the modem to synchronous mode (&M1 or &M3), then dial a number from a telephone set. When you hear the answer tone, type ATD (if &M1 is set). The modem will go into synchronous operation after connection. Answering from Synchronous Mode Auto-Answer Set the modem to synchronous mode.
  • Page 46 34 Synchronous Mode Operation...

  • Page 47: Leased Line Operation

    Leased Line Operation A leased line is a permanent telephone line connection between two fixed points. It can be dedicated copper wires or a leased telephone circuit from the telephone company. Four-wire leased lines use one pair of wires to transmit data and a second pair to receive. Two- wire leased lines transmit and receive on the same pair of wires.

  • Page 48: Power Level Setting

    Power Level Setting Your modem’s leased-line mode transmission power level can be adjusted from 0 dBm to -27 dBm in 1 dBm increments. AT-Command Description AT*P0 The default is -9dBm. The adjustable range is . . . from 0 to -15dBm, effective in leased-line AT*P15 operation only.

  • Page 49: Leased-Line Dial Backup

    configuration. Be sure that one modem is set to originate mode and the other to answer mode. AT-Command Description AT*M0 When operating over a leased line, modem will handshake in originate mode. (Default) AT*M1 When operating over a leased line, modem will handshake in answer mode.

  • Page 50: Aborting From Leased-Line Operation

    The originating modem will try to dial the number up to nine times or until a 3-minute time-out is activated. If the dial backup attempt fails, the originating modem will go back to try the leased line connection. If this fails, it will try the dial-up line again. It will try these two alternatives indefinitely.

  • Page 51: Special Functions

    Special Functions This chapter describes special features of the U-336R/RE, and offers instructions on how each is used. Security Functions Your modem provides security that prevents unauthorized users from making connections. Two types of security functions are provided. Type 1 security is used when the remote modem is also a ZyXEL modem.

  • Page 52: User Passwords

    With level 1 security, the local modem will maintain the connection if the password is OK, otherwise the line disconnected. With level 2 security, redial the phone number corresponding to the dial-in password. The line simply disconnects if the password does not match. User Passwords Fifty user passwords may be defined.
  • Page 53 The following commands will enable different types and Verify: (Enter the new supervisor password again) ******** The command AT*Hn will modify the nth user password. You will be prompted to enter the supervisor password first and then be prompted to enter the nth user password. Levels of security: Command Function...

  • Page 54: Remote Configuration

    Remote Configuration Remote configuration for your modem is provided as a profile by profile batch mode. When on-line, the remote modem’s current configuration or one of its profiles can be read into one of the local modem’s user profiles. This profile is modified locally and the line can be disconnected during this time.

  • Page 55: Caller Number Delivery (Caller Id)

    The remote profile read and write commands - *Rab and *Wab - only work in the on-line condition. The connection speed and mode do not matter. The remote modem must be set to accept remote configuration by executing the AT*F1 command. The AT*F0 command will set the modem up to deny remote configuration requests.
  • Page 56 There are two kinds of caller information message formats sent by the phone company: One is the single message format which includes date, time, and caller ID. The other is the multiple message format which also includes the caller name as registered with the phone company. The command ATS40.2=n is used to enable (n=1) or disable (n=0) the Caller ID detection function.
  • Page 57 Brent Harper RING In the multiple message format, if the caller’s number and name are available, the ring message will display both: RING TIME: MM-DD hh:mm CALLER NUMBER: <Caller_ID> CALLER NAME: <Caller_Name> RING Here is an example: RING TIME: 04-28 12:30 CALLER NUMBER: 7135551414 CALLER NAME: Jordan Chu RING...

  • Page 58: Distinctive Ring

    O O N TR-NWT- LEASE REFER TO THE ELLCORE ECHNICAL DVISORY DOCUMENT 000030 FOR THE EXACT DATA FORMAT HE ABOVE ALLER SCHEME APPLIES TO THE ORTH MERICA ONLY IFFERENT COUNTRIES MAY EMPLOY DIFFERENT ALLER SCHEMES AKE SURE THE SCHEME USED IN YOUR COUNTRY IS SUPPORTED BEFORE USING THE ALLER FEATURE...

  • Page 59: Extended Distinctive Ring (Edr)

    ring types is the two-second ON part of the ring signal. It comprises a long, double short, or triple short ring. S-register S40 bits 3-6 are used for distinctive ring control. Each bit controls the answering of a particular ring type. Setting a bit to “1”...
  • Page 60 interfering with regular voice calls. When most users install a fax/modem at home, they won’t subscribe to an extra telephone line for occasional fax or data calls; however, fax/data calls do come in from time to time. If a user lets the fax/data software application answer, voice calls will be missed.

  • Page 61: Setting Up Edr

    to press the START button, the caller can press a designated DTMF tone, which will activate the modem to report and subsequently be ordered to answer the fax call. Setting Up EDR The new EDR can be used at home where multiple phones are installed in parallel.

  • Page 62: Edr Application Example

    EDR detection (either CNG or DTMF tones) will be disabled once detection occurs. However, a customer’s program might not answer because the setting of the software may require multiple rings to answer. S51 bits 0-1 control the number of rings that the modem will report once the CNG or DTMF tone is detected.
  • Page 63 4. Set S51.2=1 to enable DTMF tone detection. It is reported as RING. If the remote fax machine does not generate the CNG tone, ask a fax caller through your answering machine message to press “*” (or any other DTMF key) if he or she wants to send a fax.
  • Page 64 52 Special Functions...

  • Page 65: Fax Operation

    Fax Operation In the sections below, we will describe how the U336R/RE works as a fax machine, the ITU-T T.30 fax protocol, the Class 1, 2, and 2.0 fax commands and ZyXEL extended fax AT commands. Also covered are the status report result codes, the flow control protocol associated with ZyXEL fax AT commands, and some specific fax applications.

  • Page 66: Itu-T T.30 Fax Protocol

    ITU-T T.30 Fax Protocol The U-336R/RE takes full control of the ITU-T T.30 fax protocol, also known as G3 fax handshaking signals and procedures. Your modem initiates and terminates fax calls, manages communications sessions, and transports image data relieving the computer fax software of the T.30 protocol handling.

  • Page 67: Class 1 Command Set

    Class 1 commands control on-line modem negotiation while Class 2 commands allow the modem to do many negotiations simultaneously. The Class 1 protocol uses the modem to transmit fax data only. The complete organizational overhead for this protocol is handled by the connected computer. The Class 1 command set is also called the TIA-578 standard.

  • Page 68: Class 2 Command Set

    Command Value Description units. +FRS=n 0-255 Wait for silence, in 10 ms units. +FTM=<MOD> Transmit data with <MOD> carrier. +FRM=<MOD> Receive data with <MOD> carrier. +FTH=<MOD> Transmit HDLC data with <MOD> carrier. +FRH=<MOD> Receive HDLC data with <MOD> carrier. The <MOD> parameter for the preceding commands take the following values: Value Modulation Speed...
  • Page 69 Command Syntax Description +<command>=<value> Execute a command or set a parameter. +<command>=? Read permissible settings. +<command>? Read current setting. Supported Commands (per TIA PN2388 8/20/90) Command Value Description +FAA=n Auto-answer mode parameter: Answer as set by +FCLASS. DCE answers and auto-determines type.
  • Page 70 Command Value Description parameter. No copy quality check capability. Only check 1D phase C data. Check both 1D and 2D phase C data. +FCR=n "Capability to receive" parameter DCE will not receive message data or poll a remote device. DCE receives message data or polls a remote device.
  • Page 71 Command Value Description bf=0 Disable binary file transfer. st=0 Minimum scan time/line: 0 ms. st=1 Minimum scan time/line: 5 ms. st=2 Minimum scan time/line:10 ms (normal); 5 ms (fine). st=3 Minimum scan time/line:10 ms. st=4 Minimum scan time/line:20 ms (normal); 10ms (fine). st=5 Minimum scan time/line:20 ms.
  • Page 72 Command Value Description Regular fax abort command. +FLID="string" Local ID string parameter. +FLO=n Flow control options: No flow control. Set XON/XOFF software flow control. Set CTS/RTS hardware flow control. +FLPL=n Document for polling command: The DTE has no document available for polling.
  • Page 73 Command Value Description Page good; procedure interrupt requested. +FREL=n Phase C received EOL alignment: The EOL patterns are bit aligned as received. The last received bits of EOL patterns are byte aligned by the DCE, with necessary zero fill bits inserted. Refer to TIA PN-2388 for details.
  • Page 74 Response Value Function and Description +FET:n Post page message response; refer to the +FET=n command. +FHNG:n Call termination status response. n=00 Normal and proper end of connection. n=10 Transmit error on phase A hang up code. n=20 Transmit error on phase B hang up code. n=40 Transmit error on phase C hang up code.

  • Page 75: Class 2.0 Command Set

    Class 2.0 Command Set Command Syntax Description +<command>=<value> Execute a command or set a parameter. +<command>=? Read permissible settings. +<command>? Read the current setting. Supported Commands Command Value Description +FAA=n Auto-answer mode parameter: DCE answers as set by +FCLASS. DCE answers and auto-determines call type.
  • Page 76 Command Value Description tq=0 DCE Transmit Copy Quality Checking disabled. tq=1 DCE Transmit Copy Quality Checking enabled. tq=2 DCE Transmit Copy Quality Correction enabled. +FCR=n "Capability to receive" parameter DCE will not receive message or poll a remote device. DCE receives message data or polls a remote device +FCT=n 0-255 DTE phase C time-out parameter.
  • Page 77 Command Value Description and reported using the +FVO response. +FIP Initialize facsimile parameters to factory default. +FIS=vr,br,wd Current session parameter. refer to ,ln,df,ec,bf,st +FDCC Class 2 command in previous section parameter settings. +FKS Session termination command. +FLI="string" Local ID string parameter. +FLO=n Flow control options: No flow control.
  • Page 78 Command Value Description (+FCS parameter is still loaded) tpr=1 Transmitter Parameters are reported. +FCS: response reports are generated. idr=0 ID Strings are not reported. +FTI: +FCI: and +FPI: response reports are suppressed. idr=1 ID Strings are reported. +FNF:, +FNS: and +FNC: response reports are generated.
  • Page 79 Command Value Description 0-64 with negotiated number of pixels) (HEX required for a page considered value) acceptable. The percentage of good lines would be computed by the equation: 100 x (<lc> - <bl>) / <lc> lc: total line count as reported in the +FPS: response.
  • Page 80 Response Value Function and Description procedure interrupt requested. ppm=4 Another document next, procedure interrupt requested. ppm=5 No more documents or pages, procedure interrupt requested. +FHS:<hsc> Call termination status: hsc= Call placement and termination. Refer to 0-0F TIA-592 for details. hsc= Transmit phase A and miscellaneous 10-1F errors.
  • Page 81 Response Value Function and Description +FNS: Report NSS (non-standard Setup) frame. "NSS FIF string" +FPI: Report remote ID response-Polling "CIG ID Station ID (CIG). string" +FPO Remote polling indication. +FPS:ppr,lc,b .30 phase C page reception response: lc,cblc,lbc ppr=1 Received page good. ppr=2 Page bad;...

  • Page 82: Extended Fax At Command Set

    Extended Fax AT Command Set Extended Fax AT Commands are unique to ZyXEL modems. The computer controls the modem through a set of extended fax AT commands and the modem responds with a set of status report result codes. During data state, compressed fax image data is flowing between the modem and computer.
  • Page 83 Command Function modem will wait for DC2 at the beginning of every page. The DTE software should detect the page separator RTC and then sends the DC2 to receive the next page of fax data. This mode is used with a BBS receiving faxes.
  • Page 84 Command Function Set minimum scan line time capability of the receiver: 10 ms at 3.85 line/mm, T(7.7)=T(3.85). Set minimum scan line time capability of the receiver: 20 ms at 3.85 line/mm, T(7.7)=1/2 T(3.85). Set minimum scan line time capability of the receiver: 40 ms at 3.85 line/mm, T(7.7)=T(3.85).
  • Page 85 CONNECT FAX See below. When a fax connection is successfully established, the modem returns this message: CONNECT FAX/SnnnnVnTnRnLnCnP<string> This message includes the connection speed and the fax parameters explained in the table below: Field Description Snnnn Fax connection speed; nnnn is a 4-digit number representing the connection speed.

  • Page 86: Flow Control

    The basic AT commands ATV0 and ATQ1 do not affect the above CONNECT and DISCONNECT status report result codes. The modem will always return the same status format as above. Flow Control In extended fax AT command mode, your modem always uses hardware (CTS/RTS) flow control.

  • Page 87: Fax Reception From A Bbs

    Fax Reception from a BBS Your modem can automatically detect data and fax calls and allow BBS software to receive faxes on the same phone line. To allow your BBS to receive incoming faxes, make the following set-up changes in your BBS: 1.
  • Page 88 String Error Level 1 ZyXEL The following is a sample setting in the BINKLEY.CFG file for a Binkley system. Init AT&FX7S0=1#B1+FCLASS=6 ExtrnMail ZyXEL errorlevel 76 Fax Operation...

  • Page 89: At Command Set Summaries

    AT Command Set Summaries Basic AT Command Set Command Options Function & Description Ref. Re-execute the last command once. A> Re-execute the last command once or repeat the last call up to 9 times. (See also S8) <any key> Terminate current connection attempt when enter in handshaking state.
  • Page 90 Command Options Function & Description Ref. Pause for a time specified in S8. Remaining digits will be dialed as in- band DTMF. Return to command state after dialing. Hook flash. Wait for a 5 second silence before proceeding. Reverse handshake (go on-line in S17.5 Answer mode).
  • Page 91 Command Options Function & Description Ref. Display physical layer status. n=0-7 Speaker volume control. The higher S24.4-6 the value, the higher the volume. Speaker control. S21.1-2 Speaker always OFF. M1 * Speaker ON until call is answered. Speaker always ON. Speaker ON after the last digit is dialed out and OFF when carrier is detected.

  • Page 92: Description Of Ati2 Output

    Command Options Function & Description Ref. Sets display type for Result Codes. S23.6 Display result code in numeric form. (See also S35.7 and the result code table of 'ATXn') V1 * Display result code in verbose form. n=0-7 Result code options, see the Options S23.3-5 Table.
  • Page 93 Max Outstanding Max Block Size Retrain Requested Link Duration Retrain Granted T401 Timeouts T402 Timeouts FCS Errors Round Trip Delay Xmitter Underrun Receiver Overrun Last Speed/Protocol Connect 14400/ARQ/V42b Disconnect Reason Local Hangup Data Type Description Chars Data received from or sent to DTE (PC). (Formatted as 7,E,1 or 7,O,1 or 8,N,1 etc.) Octets Data received from or sent to remote modem in...
  • Page 94 Output Parameter Output Value Description Chars Received Number of characters modem has sent to DTE. Octets Sent Number of data bytes sent to remote modem Octets Received Number of data bytes received from remote modem. Blocks Sent Number of data blocks sent to remote modem.

  • Page 95: Extended At& Command Set

    Output Parameter Output Value Description Carrier Lost On-Line (Not disconnected) Resent Expiration Protocol Error Break Time-out DTR Dropped Carrier Lost 1 Carrier Lost 2 (Remote (No handshaking hang-up, busy tone) response) Keyboard Abort Security check Inactivity. ATH command D/V hang up. Extended AT&...
  • Page 96 Command Options Function & Description Ref. &D3 Same as &D2 but DTR OFF causes the modem to hang up and reset from profile 0. &F Load factory settings to RAM as active configuration. &Gn Guard tone options. S28.4-5 &G0 * No guard tone (within USA, Canada).
  • Page 97 Command Options Function & Description Ref. buffering. &M1 Asynchronous command, synchronous data. &M2 Direct asynchronous mode, no data buffering. &M3 Synchronous mode. &Nn Modem link mode options (DCE/DCE). (See also S43.7, S48.1) &N0 * Multi-Auto, auto negotiate highest possible link rate: V.34, ZyX 19200, ZyX16800, V.32bis, V.32, V.22bis, V.22 and Bell 212A, G3 Fax V.17/V.29/V.27ter and cellular...
  • Page 98 Command Options Function & Description Ref. &N11 V.26bis 2400 (models with 4-wire leased lines only) &N12 V.23 1200/75 (See also S48b3, S52b7) &N13 V.23 600/75 (See also S52b7) &N14 V.22bis 2400/1200 &N15 V.22 1200 &N16 V.21 300 &N17 V.32bis 14400/12000/9600/7200/4800 &N18 V.32bis 12000/9600/7200/4800 &N19...
  • Page 99 Command Options Function & Description Ref. &N66 V.34 19200 &N67 V.34 16800 &N68 V.34 14400 &N69 V.34 12000 &N70 V.34 9600 &N71 V.34 7200 &N72 V.34 4800 &N73 V.34 2400 &Pn Pulse dial make/break ratio. S23.2 &P0 * make / break, 39% / 61% &P1 make / break, 33% / 67% &Rn...
  • Page 100 Command Options Function & Description Ref. &T6 Initiate Remote Digital Loop-back (RDL) test. &T7 Initiate Remote Digital Loop-back with self test (RDL+ST). &T8 Initiate Analog Loop-back with self test. (ALB+ST). &Vn View profile settings. &V0 View current active settings. &Vn View the (n-1) user profile settings (n=1-4).

  • Page 101: Extended At* Command Set

    Command Options Function & Description Ref. &Y2 Nondestructive, unexpedited. &Z? Display all the phone numbers stored in non-volatile RAM. &Zn=s n=0-49 Write phone number/s to NVRAM at location n (n=0-49) use AT*Dn or ATS29=n to set the default dial pointer. Extended AT* Command Set Command Options Function &...
  • Page 102 Command Options Function & Description Ref. Remote configuration enable. S36.0 *F0 * Deny remote configuration. Accept remote configuration (Remote Digital Loop-back must be granted, &T4). Security function selection. S36.5-7 *G0 * Disable security function Enable type 1 security, with password check (ZyXEL to ZyXEL only).
  • Page 103 Command Options Function & Description Ref. Set to Answer mode. n=0-15 Set leased line transmission power S17.1-4 *P11 * level; ranges from 0 dBm to -15 dBm (default: -11 dBm) (see also S35.3). Action taken when line quality S27.6-7 changes. No action to poor signal quality.

  • Page 104: Status Registers & Result Codes

    Status Registers & Result Codes S-Register Descriptions In most bit-mapped S-registers, the default bit value is 0. Non-0 default values are followed by an asterisk. In some cases, default values are shown in the reference column preceded by +. Some bits are reserved for factory use and should not be changed.

  • Page 105: Extended S-Registers "Atsn=X

    Command Function & Description +Ref. “W” dial modifier to wait for the dial tone. (See also S41b4) Set duration, in number of seconds modem +060 waits for a carrier. Set duration, in seconds, for pause (,) option in +002 Dial command and pause between command re-executions for Repeat (>) command.
  • Page 106 Command bit dec hex Function and description Ref. back test request. Deny Remote Digital Loop- &T5 back test. Dial-up line (Default). &L0 2-wire leased line. &L1 4-wire leased line. &L2 Internal clock (Default). &X0 External clock. &X1 Remote clock. &X2 Asynchronous data with &M0 buffering (Default).
  • Page 107 Command bit dec hex Function and description Ref. Profile 3 as active settings after power on. 128 80 * Factory default as active settings after power on S16= hex Test status register. +000 No test in progress. &T0 Loop-back test in progress &T1 Local Digital Loop-back test &T3...
  • Page 108 Command bit dec hex Function and description Ref. value settings (n) the same as S20. S19= hex Modem connection mode, +000/ same. &Nn 0-73 0-49 setting value as 'AT&Nn' command. S20= hex DTE speed (bps). Auto +003 detected from AT Command.
  • Page 109 Command bit dec hex Function and description Ref. 62400 bps 41600 bps 31200 bps 24960 bps 20800 bps 921600 bps Note: Only the speeds up to S20=15 are supported by auto speed detection. S21= hex Bit mapped register. Maintain non-error control connection when modem error control handshake fails.
  • Page 110 Command bit dec hex Function and description Ref. Ignore RTS (CTS always &D2 ON) in synchronous mode. (Default). Assume DTR always On. &D0 108.1, DTR OFF-ON &D1 transition causes dial of the default number. 128 80 108.2 Data Terminal Ready, &D2 DTR OFF causes the modem to hang up and...
  • Page 111 Command bit dec hex Function and description Ref. ATX6, error control result code enabled. ATX7, error control result code enabled. Display result code in numeric format (see S35.7) Display result code in verbose format. Modem returns result code 128 80 Modem does not return result code (see also S40.1) S24=...
  • Page 112 Command bit dec hex Function and description Ref. No error control. &K0 MNP4 + MNP3 (see also &K1 S41.0) MNP4 + MNP5 (see also &K2 S38.5, S41.0) V.42+MNP4 &K3 V.42 + V.42bis (compatible &K4 with &K2) Flow control disabled. &H0 Hardware (RTS/CTS) flow &H3 control.
  • Page 113 Command bit dec hex Function and description Ref. bps communication. S29= 0-49 0-31 Set default dial phone +000 number pointer, use AT&Zn=s to store phone numbers. S31= 0-FF Holds the ASCII decimal +017 value of the XON. S32= 0-FF Holds the ASCII decimal +019 value of the XOFF.
  • Page 114 Command bit dec hex Function and description Ref. password will be requested. This bit in profile 0 also protects the supervisory password from a hardware reset. 128 80 Enable extended numerical result codes from 50-71 S23.6 when an error corrected connection is made.
  • Page 115 Command bit dec hex Function and description Ref. 128 80 Enable type 2 security with password check and call- back. 160 A0 Enable type 2 security with password check and call- back, remote site enters the call-back number. S37= hex Bit-mapped register for +000 remote configuration using panel menu control.
  • Page 116 Command bit dec hex Function and description Ref. +FCON at current DTE, shift to 19,200 when entering into the next phase. S40= hex Bit mapped register. +000 No result code displayed in answer mode. Enables caller ID detection Enables type 1 ring detection.
  • Page 117 Command bit dec hex Function and description Ref. 128 80 Ignore calling tone, not to be used as fax detection. S42= hex Bit mapped register. +000 Enables throughput averaging. CND message will be forced on even if AT02 is set. Disable escape sequence code in answer mode.
  • Page 118 Command bit dec hex Function and description Ref. between off-hook and modem answering. 128 80 Modem hang-up if the line condition does not permit modem to run highest speed set by ‘&Nn’ command. S44= hex Bit mapped register. +000 ATDSn initiates auto-dial of the stored numbers consecutively until connection is made.
  • Page 119 Command bit dec hex Function and description Ref. (discontinuous) ring-back detection. S45= Delay during which the +087 0-FF CND silence detection is disabled, in 20 ms units. (See also S46) S46= hex CND silence detection +003 interval. 0-FF To process the CND, silence must be detected for the specified interval, in 20 ms units.
  • Page 120 Command bit dec hex Function and description Ref. (Work with &D1 command) DTR ON will have the modem dial the default number and DTR OFF will have the modem hang-up and reset to profile 0. When the modem is idle (waiting for command), it will not dial any number when DTR changes from ON to OFF.
  • Page 121 Command bit dec hex Function and description Ref. Reports RING twice. Reports RING four times. Reports RING six times. Disables DTMF tone. Reports RING for a DTMF tone. Reports RING ‘DTMF’ for a DTMF tone. Reserved. Disables fax-CNG tone detection (Default). Reports RING for fax CNG tone.
  • Page 122 Command bit dec hex Function and description Ref. signal of the V.23 handshaking sequence (Default). 128 80 Select ‘Space’ as the first &N12 signal of the V.23 handshaking sequence. S56= +050 0-FF Hook flash detect time, in units of 10ms, country specific.

  • Page 123: Result Code Options

    Equivalent Hexadecimal value. Factory default when listed in 'Reference' column. +nnn 'AT' is omitted when an AT command is referred to in Note: the 'Reference' column.. Result Code Options "ATXn" Result Code Option Table The following table shows the different options available when setting the ATXn command.
  • Page 124 ATV0 ATV1 X0 X1 X2 X3 X4 X5 X6 X7 CONNECT 57600 CONNECT 76800 CONNECT 115200 CONNECT 230400 CONNECT 460800 CONNECT 921600 CONNECT 307200 CONNECT 153600 CONNECT 102400 CONNECT 61440 CONNECT 51200 CONNECT 624000 CONNECT 124800 CONNECT 62400 CONNECT 41600 CONNECT 31200 % @ $ CONNECT 24960...

  • Page 125: Result Code Field Descriptions

    DCE_Speed/Error_Control † Example: CONNECT 38400/V.32bis 14400/V.42bis <cr><lf>CONNECT DCE_Speed[/Error_Code]<cr><lf> Example: CONNECT 14400/ARQ CONNECT DCE _Speed/Error_Code/Error_Control † Example: CONNECT 14400/ARQ/ MNP5 † Data compression included. 'SREJ' is appended if a V.42 connection with selective reject is established. Result Code Field Descriptions Field Name Possible Values Error_Code NONE, ARQ...
  • Page 126 Numerical Verbose V1 Numerical Verbose V1 CONNECT CONNECT 4800 24000 CONNECT CONNECT 7200 26400 CONNECT CONNECT 9600 28800 CONNECT CONNECT 12000 31600 CONNECT CONNECT 14400 33600 114 Status Registers & Result Codes...
  • Page 127 Status Registers & Result Codes 115...

  • Page 128: Diagnostics & Troubleshooting

    Diagnostics & Troubleshooting Diagnostics The U-336R/RE is equipped with several diagnostic capabilities: Power-on Self Test Analog Loop-back Test Analog Loop-back with Self-Test Local Digital Loop-back Test Remote Digital Loop-back Test Remote Digital Loop-back with Self-Test Line Condition Status Display Re-Transmission Indicator Throughput Display Link Status Report The diagnostic tests listed above apply to several modes of...

  • Page 129: Power-On Self Test

    O O N U-336R RS-1612 ITEMS APPLICABLE EXCLUSIVELY TO INSTALLED IN RACK SYSTEM Power-On Self Test At each power-up or upon a reset command from the panel, the modem will test the ROM code checksum, system RAM memory, DSP code checksum, DSP RAM memory, EEPROM, digital circuits, and the analog circuit calibrations.

  • Page 130: Loopback Tests

    8 FR CALIBRATION Analog circuit calibration error. FAIL..Loopback Tests The Analog Loopback Test, Local Digital Loopback Test, Remote Digital Loopback Test can all be initiated with AT commands from the terminal. Use the AT&T0 command to terminate the test. Analog Loopback (AT&T1) This test can check almost every part of the modem and the RS-232 cable except the telephone line outgoing interface.

  • Page 131: Indicator Lights

    received from the remote modem will be returned to the remote modem. This test is applicable when the remote modem does not provide V.54 Remote Digital Loopback capability. This test can be initiated by the local modem when the modems are on-line. Remote Digital Loopback Test (AT&T6) This test will request the remote modem to do a digital loopback.

  • Page 132: Line Condition Status Display

    Dialing Indicator The V34 LED will flash on and off for 1/2 second intervals to indicate that the modem is dialing. This flash will continue after dialing until a carrier is detected. Therefore, the V34 LED will also flash during leased-line modem connections when one modem is trying to handshake but the other modem is not turned on.
  • Page 133 Received Signal Power Level (RX) This reading is expressed in 1 dBm resolution. The modem measured receiving signal power is generally within 1-2 dBm of the actual value with relative accuracy. The receiver sensitivity specification for your modem is -43 dBm. Strong signal power could cause signal saturation in the channel and degrade the data validity.

  • Page 134: Link Status Report (Ati2)

    FRN (Fast Rate Negotiation) Granted (FG) The count of the granting of the remote modem's change rate (FRN) requests. Each request is an indicator of a changed receiving condition. FRN Request (FR) The count of the local modem's requests to change the rate. Block Retransmitted (BR) The count of the blocks retransmitted (bad reception on the remote modem).
  • Page 135 Retrain Requested Link Duration Retrain Granted T401 Timeouts T402 Timeouts FCS Errors Round Trip Delay Xmitter Underrun Receiver Overrun Last Speed/Protocol Connect 14400/ARQ/V42b Disconnect Reason Local Hangup This Link Status Report is very helpful in finding the link condition and identifying problems with the link. Following are explanations for each item and the terminology used above.
  • Page 136 Chars Received Characters received by the modem from the line and sent to the DTE. Octets Sent Data bytes sent to the remote modem. Octets Received Data bytes received from the remote modem. Blocks Sent Blocks sent to the remote modem. Blocks Received Blocks received from the remote modem.
  • Page 137 T401 Timeouts and T402 Timeouts These are for the manufacturer checking link layer operation. T401 and T402 are timers used in MNP4 or V.42. T402 will count when the modem is connected in the idle state with no data to transmit or receive.

  • Page 138: Trouble Shooting

    Resent Expiration Protocol Error Break Timeout DTR Dropped Carrier Lost 1 (No handshaking response) Carrier Lost 2 (Remote hang-up, busy tone heard) Trouble Shooting Your modem is designed to provide years of ultra high speed satisfaction. In the unlikely event you encounter problems using your modem, the tips in this section will help you to identify and resolve them.
  • Page 139 Problem Your modem fails to execute AT commands. 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. You may have omitted the characters AT from the beginning of the command line.

  • Page 140: Command Echo Problems

    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.

  • Page 141: Dialing Problems

    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.

  • Page 142: Data Transfer Problems

    Data Transfer Problems Problem You can make a data connection with a remote modem, but encounter frequent errors during data transfers. Solutions 1. Your modem and communications software may be configured for different flow control methods. Be sure your modem and software are both using hardware (RTS/CTS) flow control or software (XON/XOFF) flow control.

  • Page 143: Upgrading Your Modem

    Upgrading Your Modem Upgrading by Flash EPROM 1. Obtain the new firmware by downloading from the ZyXEL BBS, WWW or FTP site. See Contacting ZyXEL on page vi for instructions. 2. Turn on your computer. 3. Turn on your modem. 4.

  • Page 144: Kernel Recovery Mode

    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.

  • Page 145: Terminal Pinouts

    Terminal Pinouts Terminal Blocks Each terminal block has eight terminal pins for connecting phone lines to the corresponding modem in the rack. A description and function of each of the eight pins is given below: Pin Assignment Purpose Connect to your telephone RING Connect to your telephone Connect to dial up line...

  • Page 146: Pc Serial Port Pinouts

    PC Serial Port Pinouts Signa ITU-TSS Pin/Signal Direction l Pin Signal Signal Description DTE- Name Name Protective Ground (GND). Transmitted Data(TXD). Received Data(RXD). Request To Send (RTS). Clear To Send (CTS). Data Set Ready (DSR). Signal Ground (GND). Data Carrier Detected (DCD).

  • Page 147: Macintosh Serial Port Pinouts

    Signa ITU-TSS Pin/Signal Direction l Pin Signal Signal Description DTE- Name Name Loop Test. Ring Indicator(RI). Transmit Clock Signal (source: DTE). Test Indicator. Macintosh Serial Port Pinouts The following table shows the wiring of a modem Macintosh hardware handshaking cable: Modem Description Din 8...
  • Page 148 136 Terminal Pinouts...

  • Page 149: Index

    Index 16450 UART, 25 84, 97, 105, 107, 114, 124, 125, 16550 UART, 5, 25, 26 136, 137 2-wire leased line, 2, 4, 35, 95 EDR, 3, 47, 48, 49, 50, 51, 110 4-wire leased line, 2, 4, 35, 85, 86, 95 EIA/TIA, 54 Amiga, 1 Error correction, 1, 25, 59...
  • Page 150 Remote digital loopback, 3, 31, 43, Synchronous mode, 2, 29, 32, 33, 85, 99, 100, 101, 107, 119, 120 ROM code checksum, 118 T.30 fax protocol, 53, 54 RS-1612, 9, 10 Terminal blocks, 10 RS-232, iv, 5, 11, 53, 55, 109, 119, Troubleshooting, 12, 13 120, 137 UNIX, 1, 28, 104...

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