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3Com Impact IQ 3C882 User Manual
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3Com Impact IQ 3C882 User Manual

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3C
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Part No. 09-0885-000
Published July 1996
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Summary of Contents for 3Com Impact IQ 3C882

  • Page 1 ™ MPACT ® ISDN M XTERNAL ODEM UIDE Part No. 09-0885-000 Published July 1996...
  • Page 2 file named LICENSE.TXT. If you are unable to locate a copy, please contact 3Com and a copy will be provided to you.

  • Page 3: L Imited W Arranty

    The software for the 3ComImpact IQ External ISDN Modem has a 90 day warranty as further specified in the Limited Warranty statement. To ensure the very best 3Com service and support, take the time to register on-line or complete the product registration card.

  • Page 4: Table Of Contents

    ONTENTS BOUT UIDE Introduction 1 How to Use This Guide 1 Conventions 2 NTRODUCTION 3C882 ISDN Modem Features 1-2 Easy Installation and Use 1-2 High Performance 1-3 Protocols 1-3 ISDN Standards and Interface 1-3 Security 1-4 Voice Features 1-4 Upgradability 1-4 Diagnostics 1-4 Warranty 1-4 3C882 ISDN Modem Package Contents 1-5...
  • Page 5 IBM-C ONFIGURATION FOR AN OMPATIBLE Configuring the 3C882 ISDN Modem for a PC 3-1 Installing the 3C882 Software 3-2 Running SPID Wizard 3-3 Configuring Multilink PPP 3-8 Configuring the B Channel Rate 3-9 Configuring Voice Call Routing 3-9 Verifying the Configuration 3-11 Setup Using Windows 95 3-13 Setup Using Windows NT RAS 3-17 ONFIGURATION FOR AN...
  • Page 6 Downloading Firmware to Your 3C882 ISDN Modem 7-5 ISDN S RDERING ERVICE Placing the ISDN Order Through 3Com A-1 Placing the ISDN Order Through Your Telephone Company A-1 AT&T 5ESS Switch NI1 A-3 AT&T 5ESS Custom Switch A-4 NorthernTelecomDMS 100 Switch A-5...
  • Page 7 ECHNICAL UPPORT On-line Technical Services E-1 3Com Bulletin Board Service E-1 World Wide Web Site E-2 3ComForum on CompuServe E-3 3ComFacts Automated Fax Service E-3 Support from Your Network Supplier E-4 Support from 3Com E-4 Returning Products for Repair E-4...
  • Page 8 IGURES 1-1 Network Access with the 3C882 ISDN Modem 1-1 1-2 ISDN Information Sheet 1-7 2-1 Installation Steps for the 3C882 ISDN Modem 2-1 2-2 Front Panel LED Indicators 2-2 2-3 Back Panel Connectors 2-2 2-4 Computer to 3C882 ISDN Modem COM Port Connection 2-4 2-5 ISDN Cable Connection 2-5 2-6 Analog Equipment Connection 2-6 2-7 Power Cable Connection 2-8...
  • Page 9 4-1 Main 3C882 Configuration Steps for a Macintosh 4-1 4-2 3ComImpact IQ Installer Icon 4-2 4-3 Installation Confirmation Message Box 4-2 4-4 Software Installation Location Dialog Box 4-3 4-5 Successful Installation Message Box 4-3 4-6 3ComImpact IQ Program Icon 4-4 4-7 Select Modem Port Screen 4-4 4-8 SPID Wizard Start Screen 4-5 4-9 Switch Detection Status Screen for Macintosh 4-6...
  • Page 10 ABLES 1 Text Conventions 2 2 Notice Icons 2 2-1 Front Panel LED Indicator Definitions 2-3 5-1 Changing Default Settings 5-5 7-1 Symptoms, Causes, and Solutions 7-3 A-1 ISDN Order Codes A-2 A-2 Line Configuration for AT&T 5ESS NI1 A-3 A-3 Line Configuration for AT&T 5ESS Custom A-4 A-4 Line Configuration for DMS 100 A-5 A-5 Line Configuration for Siemens EWSD A-6...

  • Page 11: How To Use This Guide

    Instructions for ordering ISDN service Appendix A Tabular summary of the AT command line set, S registers, Appendix B and result codes 3C882 ISDN modem specifications Appendix C Instructions for configuration using DOS Appendix D ® Information about technical support from 3Com Appendix E...

  • Page 12: Conventions

    Conventions Conventions Table 1 and Table 2 list text and icon conventions that are used throughout this guide. Table 1 Text Conventions Convention Description Text represented as This typeface is used to represent displays that appear on your terminal screen, for example: screen display NetLogin:...

  • Page 13: Introduction

    NTRODUCTION ™ The 3ComImpact IQ External ISDN Modem (referred to as the 3C882 ISDN modem throughout this guide) is an external, stand-alone Integrated Services Digital Network (ISDN) Basic Rate ISDN modem for connection with digital telephone services from local telephone companies in North America. ®...

  • Page 14: 3C882 Isdn Modem Features

    3C882 ISDN Modem Features The 3C882 ISDN modem allows transmission of data at speeds of up to 128 Kbps over digital ISDN connections with the highest reliability and error-free performance possible. ® With Stac compression and a high-speed serial port, the 3C882 ISDN modem allows you to get transmission speeds of up to 230.4 Kbps.

  • Page 15: High Performance

    3C882 ISDN Modem Features High Performance Stac compression, for data throughput of up to 230.4 Kbps, which conforms to these IETF drafts: The PPP Compression Control Protocol, March 1994, and PPP Stacker LZS Compression Protocol, February 1996 An asynchronous RS-232-D data port for connectivity to IBM or compatible PC and Apple Macintosh serial ports at rates of up to 230.4 Kbps Multilink PPP (RFC 1717), which creates a single digital...

  • Page 16: Security

    ISDN line Flexible call routing to the two analog ports Upgradability Flash memory for field firmware updates Firmware posted on 3Com’s ftp and BBS sites Diagnostics LED status display Test call compatibility Warranty...

  • Page 17: 3C882 Isdn Modem Package Contents

    Windows NT®, Windows 3.x, or DOS 3.5-inch installation diskette for Macintosh computers 3ComImpact IQ External ISDN Modem User Guide 3Com Impact IQ External ISDN Modem Quick Start Instructions Before You Install the 3C882 ISDN Modem To install and use the 3C882 ISDN modem successfully, you...

  • Page 18: Ibm Pc Or Compatible Requirements

    For 230.4 Kbps data rate. You will need an enhanced serial port card and COM port driver software which support 230.4 Kbps. For 115.2 Kbps data rate. 3Com recommends that your IBM or IBM-compatible PC serial COM port be equipped with a 16C550 UART (universal asynchronous receiver/transmitter).

  • Page 19: Isdn Information

    Before You Install the 3C882 ISDN Modem ISDN Information Enter your ISDN telephone number(s) in the information sheet shown in Figure 1-2. You will need this information during configuration of the 3C882 ISDN modem. Although the 3C882 ISDN modem automatically configures the ISDN switch type and Service Profile Identifier (SPID) number(s), you should indicate the switch type and SPID(s), if any were assigned.
  • Page 20 Before You Install the 3C882 ISDN Modem ISDN Switch Type. Place a check mark next to the ISDN switch your telephone company uses. Each switch type has a corresponding provisioning table in Appendix A. Number of ISDN Telephone Numbers. Your one ISDN telephone line can support two ISDN telephone numbers.

  • Page 21: Installing The 3C882 Isdn Modem

    3C882 NSTALLING THE ISDN M ODEM This chapter describes how to install the 3C882 ISDN modem for use with an IBM or IBM-compatible PC or an Apple Macintosh computer. This installation procedure assumes that you are familiar with your Apple Macintosh or IBM-compatible computer. If you are not, refer to the user guide that accompanied your computer for instructions on hardware installation and operating system commands.

  • Page 22: Familiarizing Yourself With The 3C882 Isdn Modem

    Familiarizing Yourself with the 3C882 ISDN Modem Familiarizing Yourself with the 3C882 ISDN Modem You should familiarize yourself with the components of the front panel and back panel of the 3C882 ISDN modem prior to installation. The LED status display, shown in Figure 2-2, consists of eight front panel LEDs that are described in Table 2-1.

  • Page 23: Front Panel Led Indicator Definitions

    Familiarizing Yourself with the 3C882 ISDN Modem Table 2-1 Front Panel LED Indicator Definitions Color Description Green Power Indicator. Lit when power is on and remains lit as long as power is supplied to the unit. TEST Green Self-Test/Status. Flashes when the 3C882 ISDN modem is executing its power-up self-test or a user-initiated reset.

  • Page 24: Installing A Serial Cable

    Installing a Serial Cable Installing a Serial Cable You will need the following type of serial cable. For a Macintosh computer, you will need a 25-pin male to mini DIN 8-pin male serial cable. Refer to the information enclosed in your 3C882 ISDN modem package to order a free cable.

  • Page 25: Installing The Isdn Cable

    Installing the ISDN Cable 2 Connect the other end of a serial cable to a serial COM port on the back of your computer and tighten the connector screws. On a PC, most COM port connectors are labeled COM, SERIAL, or RS-232-D. On an IBM AT® PC and most laptops or notebooks, connect the cable to a 9-pin COM port connector.

  • Page 26: Installing Analog Equipment

    Installing Analog Equipment Installing Analog Equipment You can connect an analog touch-tone telephone, answering machine, fax machine, or external analog modem to the 3C882 ISDN modem. You will need an RJ-11 to RJ-11 cable for each analog phone port connection. To install an analog device: 1 Insert one RJ-11 connector to a phone port labeled with a telephone icon on the back of the ISDN modem as shown...
  • Page 27 AT&T ® 2500 touch-tone telephone standard. 3Com guarantees proper operation of up to three compatible touch-tone devices per analog phone port. The 3C882 ISDN modem is designed to provide power and ringing for these three devices on up to 200 feet of AWG 26 or heavier AWG wiring.

  • Page 28: Installing The Power Cable

    Installing the Power Cable Installing the Power Cable To install the power cable: 1 Connect the 3C882 ISDN modem power cable to the 9 VDC power connector on the back panel of the ISDN modem, as shown in Figure 2-7. I S D - 2 3 .

  • Page 29: Configuration For An Ibm-Compatible Pc

    ONFIGURATION FOR AN IBM-C OMPATIBLE This chapter describes how to configure the 3C882 ISDN modem using the Windows operating system. Additional steps are required for Windows 95 and Windows NT users. The main topics are as follows: Configuring the 3C882 ISDN modem Setup Using Windows 95 Setup Using Windows NT RAS For instructions on using the DOS operating system, refer to...

  • Page 30: Installing The 3C882 Software

    Configuring the 3C882 ISDN Modem for a PC Installing the 3C882 Software To install the 3C882 ISDN modem software: 1 Insert the 3ComImpact IQ Windows & DOS Installation Diagnostic Utilities diskette into an available floppy drive. 2 If you are using Windows 95, select Run from the Start menu.

  • Page 31: Running Spid Wizard

    Configuring the 3C882 ISDN Modem for a PC Running SPID Wizard The SPID Wizard automatically detects your telephone company’s switch type and configures the SPID(s). You will need the ISDN telephone numbers from the ISDN Information Sheet you completed in Chapter 1. 1 Double-click the 3ComImpact IQ 3.0 icon shown in Figure 3-3.

  • Page 32: First Telephone Number Dialog Box For Pc

    Configuring the 3C882 ISDN Modem for a PC The dialog box for the first telephone number appears, as shown in Figure 3-5. Figure 3-5 First Telephone Number Dialog Box for PC 2 Enter the first telephone number for your ISDN line. 3 Click Next.

  • Page 33: Second Telephone Number Dialog Box For Pc

    Configuring the 3C882 ISDN Modem for a PC Figure 3-6 Second Telephone Number Dialog Box for PC 4 If you have a second telephone number for your ISDN line, enter it, and then click Next. If not, leave the field incomplete, and then click Done.

  • Page 34: Configuration Dialog Box For Pc

    Configuring the 3C882 ISDN Modem for a PC 5 Click Finish. The on-line registration dialog box appears. Enter your information and then click Register Now. After your information is received, the Configuration dialog box appears, as shown in Figure 3-8. Figure 3-8 Configuration Dialog Box for PC A message bar at the bottom of the dialog box provides status information about the 3C882 ISDN modem.
  • Page 35 Configuring the 3C882 ISDN Modem for a PC Tools. Clicking on the Tools button produces buttons for Firmware, Tests, Save and Restore. Firmware. Refer to the readme file for firmware download instructions. Tests. Use the Tests tool only under the direction of technical support personnel.

  • Page 36: Configuring Multilink Ppp

    Configuring the 3C882 ISDN Modem for a PC To run the SPID Wizard for a second telephone number: 1 From the Configuration dialog box, check the Enabled box located in the Number 2 group box. A message box appears and asks you to confirm that you want to run SPID Wizard.

  • Page 37: Configuring The B Channel Rate

    Configuring the 3C882 ISDN Modem for a PC Configuring the B Channel Rate By default, the B Channel Rate is 56 Kbps. Check with your telephone company for the appropriate B Channel Rate. To change the B Channel Rate, do the following: 1 Select the appropriate radio button, 56 Kbps or 64 Kbps.

  • Page 38: Configuration For One Telephone Number Per Device

    Configuring the 3C882 ISDN Modem for a PC 3-10 One Telephone Number per Analog Device. If you have two telephone numbers and two analog devices, you may want one telephone number associated exclusively with just an analog telephone and the other telephone number associated with just a fax machine.

  • Page 39: Verifying The Configuration

    Configuring the 3C882 ISDN Modem for a PC 3-11 Number 1 Telephone Number: 9085551212 IS D -2 3 015551212000 Service Profile Identifier: (SPID) Route Voice Calls to: Phone Port 1 Phone Port 2 • 5 A Number 2 Telephone Number: Service Profile Identifier: (SPID) Route Voice Calls to: Phone Port 1...
  • Page 40 Using Windows 95” or “Setup Using Windows NT RAS” for additional instructions. For information about how to use the 3C882 ISDN modem with tested Internet access software, use the 3Com fax service (1) (408) 727-7021 (analog) in the U.S. or visit 3Com’s World Wide Web site at http://www.3Com.com/.

  • Page 41: Setup Using Windows 95

    Setup Using Windows 95 3-13 Setup Using Windows 95 This section describes how to set up the 3C882 ISDN modem using Windows 95 Plug and Play. These instructions assume that Windows 95, Microsoft Plus!, and the 3C882 ISDN modem software have already been installed. 1 Reboot your PC with the 3C882 ISDN modem powered up and physically connected to your PC.

  • Page 42: Install From Disk Dialog Box

    Setup Using Windows 95 3-14 Figure 3-13 Install From Disk Dialog Box 4 Insert the 3ComImpact IQ Windows & DOS Installation Diagnostic Utilities diskette into an available floppy drive. 5 Click OK. The Select Device dialog box appears, as shown in Figure 3-14.

  • Page 43: Install New Modems Dialog Box

    Setup Using Windows 95 3-15 6 Select 3ComImpact IQ and then click OK. If you are planning to run your computer at the maximum 230.4 Kbps baud rate, you must set up the driver that allows a maximum 230.4 Kbps baud rate. To do so, go on to step 7. Otherwise, if you plan to run your computer at baud rates up to 115.2 Kbps, the process is complete.

  • Page 44: Modem Manufacturers And Models Dialog Box

    10 Click Next. The dialog box shown in Figure 3-16 appears. Figure 3-16 Modem Manufacturers and Models Dialog Box 11 From the Manufacturers list box, select 3COM. 12 From the Models list box, select 3ComImpact IQ 230K. 13 Click Next.

  • Page 45: Setup Using Windows Nt Ras

    Setup Using Windows NT RAS 3-17 Go to Chapter 5, “Advanced Configuration,” to review the default settings and ensure that they reflect your preferences. If you prefer not to change the default settings, go on to Chapter 6, “Placing and Receiving Calls.” Setup Using Windows NT RAS This section describes how to set up the 3C882 ISDN modem using Windows NT RAS version 3.5.1.

  • Page 46: Network Settings Dialog Box

    Setup Using Windows NT RAS 3-18 Figure 3-17 Network Settings Dialog Box 4 From the Installed Network Software list box, select Remote Access Service and then click Configure. The Remote Access Setup dialog box appears, as shown in Figure 3-18. Figure 3-18 Remote Access Setup Dialog Box 5 If a modem is already configured, select it, and then click Remove.
  • Page 47 Setup Using Windows NT RAS 3-19 6 Click Add. The Add Port dialog box appears. 7 Select a COM port, and then click OK. The Remote Access Setup message box appears. 8 Click Cancel. The Configure Port dialog box appears. 9 Select 3ComImpact IQ for baud rates up to 115.2 Kbps or select 3ComImpact IQ 230K for baud rates up to 230.4 Kbps and then specify the port usage.

  • Page 48: Configuration For An Apple Macintosh Computer

    ONFIGURATION FOR AN PPLE ACINTOSH OMPUTER This chapter describes how to configure the 3C882 ISDN modem using an Apple Macintosh computer. You will need the ISDN telephone numbers from the ISDN Information Sheet you completed in Chapter 1. Configuring the 3C882 ISDN Modem for a Macintosh Computer The main steps are shown in Figure 4-1.

  • Page 49: Installing The 3C882 Software

    Configuring the 3C882 ISDN Modem for a Macintosh Computer Installing the 3C882 Software To install the 3C882 ISDN modem software in an Apple Macintosh computer: 1 Insert the 3ComImpact IQ Installer Diagnostic Utilities software utility diskette into the floppy drive and then double-click the diskette icon.

  • Page 50: Software Installation Location Dialog Box

    Configuring the 3C882 ISDN Modem for a Macintosh Computer 4 Click Continue. Figure 4-4 appears. Figure 4-4 Software Installation Location Dialog Box 5 Select the location on your hard drive where you would like the 3ComImpact IQ folder. If you do not want to use the default folder name, change the name.

  • Page 51: Running Spid Wizard

    Configuring the 3C882 ISDN Modem for a Macintosh Computer Running SPID Wizard The SPID Wizard automatically detects your telephone company’s switch type and configures the SPID(s). SPID Wizard automatically runs when you are configuring the 3C882 ISDN modem for the first time or if you connect the 3C882 ISDN modem to a different ISDN line.

  • Page 52: Spid Wizard Start Screen

    Configuring the 3C882 ISDN Modem for a Macintosh Computer 2 Select the port to which the 3C882 ISDN modem is connected and then click OK. The SPID Wizard start screen appears, as shown in Figure 4-8. Figure 4-8 SPID Wizard Start Screen If you do not want to run the SPID Wizard, click Cancel.

  • Page 53: First Telephone Number Screen For Macintosh

    Configuring the 3C882 ISDN Modem for a Macintosh Computer Figure 4-9 Switch Detection Status Screen for Macintosh After the switch type is configured, the First Telephone Number dialog box appears, as shown in Figure 4-10. Figure 4-10 First Telephone Number Screen for Macintosh...

  • Page 54: Second Telephone Screen For Macintosh

    Configuring the 3C882 ISDN Modem for a Macintosh Computer 4 Enter the first telephone number for your ISDN line and then click Next. After SPID Wizard configures the SPID for the first telephone number, Figure 4-11 appears. Figure 4-11 Second Telephone Screen for Macintosh 5 If your ISDN line has a second telephone number assigned to it, enter it here and then click Next.

  • Page 55: Successful Configuration Screen

    Configuring the 3C882 ISDN Modem for a Macintosh Computer Figure 4-12 Successful Configuration Screen 6 Click Done. The on-line registration dialog box appears. Enter your information and then click Register Now. After your information is sent, the Configuration dialog box appears, as shown in Figure 4-13.

  • Page 56: Configuring Multilink Ppp

    Configuring the 3C882 ISDN Modem for a Macintosh Computer The Configuration dialog box buttons do the following. Update Configuration. Click Update Configuration to download parameter changes to your ISDN modem’s S registers. Update Firmware. Refer to the readme file for firmware download instructions.

  • Page 57: Configuring The B Channel Rate

    Configuring the 3C882 ISDN Modem for a Macintosh Computer 4-10 Configuring the B Channel Rate By default, the B Channel Rate is 56 Kbps. Check with your telephone company for the appropriate B Channel Rate. To change the B Channel Rate, do the following: 1 Select the appropriate radio button, 56 Kbps or 64 Kbps.

  • Page 58: Configuration For One Telephone Number Per Device

    Configuring the 3C882 ISDN Modem for a Macintosh Computer 4-11 One Telephone Number per Analog Device. If you have two telephone numbers and two analog devices, you may want one telephone number associated exclusively with just an analog telephone and the other telephone number associated with just a fax machine.

  • Page 59: Verifying The Configuration

    Configuring the 3C882 ISDN Modem for a Macintosh Computer 4-12 Note that while you are using the fax machine, for example, you cannot use the telephone to place or receive calls because your ISDN line has only one telephone number. To change the voice call routing setting: 1 Specify which Phone port should handle the calls associated with Telephone Number 1.
  • Page 60 Configuring the 3C882 ISDN Modem for a Macintosh Computer 4-13 Before closing the Configuration dialog box, do the following. 1 Confirm that the Configuration dialog box parameters are correct. 2 Click the Update Configuration button to update this information to the 3C882 ISDN modem. 3 Click Quit to exit the Configuration dialog box.

  • Page 61: Advanced Configuration

    DVANCED ONFIGURATION Advanced Configuration Parameter Default Values To change advanced configuration parameter values, you will need terminal emulation software to allow you to use AT commands. For Windows 95 and Windows NT users, HyperTerminal terminal emulation software is provided with those operating systems.
  • Page 62 Advanced Configuration Parameter Default Values QuickSelect The QuickSelect feature automatically detects and uses the protocol required for each digital call, either V.120 or Async-Sync PPP. Typically, V.120 is used for communication between two computers, while PPP is used for communication between a computer and an Internet service provider.
  • Page 63 COM port. Rates up to 115.2 Kbps can be detected automatically. 3Com recommends that you leave Autobaud enabled unless you want to set the baud rate to 230.4 Kbps. The command AT $B (baud rate) is used to set a specific baud rate, such as 230.4 Kbps.

  • Page 64: Changing The Parameter Settings

    Changing The Parameter Settings To access the 3C882 Configuration dialog box, Autobaud must be enabled. If the baud rate is set to a specific rate, you will not be able to access the Configuration dialog box. Before setting a specific baud rate, ensure that the Configuration dialog box parameters are set appropriately.
  • Page 65 Changing The Parameter Settings 3 Type: AT <command> 4 Press Enter or Return. Refer to Table 5-1 for the appropriate command. For example, to disable compression, type AT%C0, and then press [Enter] or [Return]. An AT command line starts with the characters AT. The command line accepts up to 40 command characters in the line (not including the two AT characters, or spaces).

  • Page 66: Placing And Receiving Calls

    LACING AND ECEIVING ALLS This chapter illustrates how to place and receive a variety of calls with your 3C882 ISDN modem. The 3C882 ISDN modem uses AT commands and S registers for call management. This chapter covers the following: Placing ISDN data calls Placing a Multilink PPP call Placing a 56K TollSaver call Receiving ISDN data calls...

  • Page 67: Placing Calls Automatically

    Placing ISDN Data Calls Placing Calls Automatically If you are using standard communications software, select the 3ComImpact IQ ISDN modem. If the 3ComImpact IQ ® ISDN modem is not listed, select a Hayes -compatible modem configuration and dial out through the 3C882 ISDN modem.

  • Page 68: Placing Multilink Ppp Calls

    Placing ISDN Data Calls 3 Type: AT D <telephone number> The 3C882 ISDN modem recognizes the AT command ATD to dial a digital ISDN data call. Correct examples of outgoing circuit-switched ISDN modem commands with dial strings are: AT D 1 408 654 2703 ATD14086542703 For a summary of the AT command set, see Appendix B.

  • Page 69: Placing A 56K Tollsaver Call

    Placing a 56K TollSaver Call For automatic placement of a Multilink PPP call, simply launch the call. For manual dialing, type the following: ATD <telephone number> An example is as follows: ATD 1 908 555 1212 Some Internet service providers require you to dial two telephone numbers to place a Multilink PPP call.

  • Page 70: Receiving Isdn Data Calls

    Receiving ISDN Data Calls To manually dial a 56K TollSaver call on a call by call basis, type the following: ATDD <telephone number> An example is as follows: ATDD 1 908 555 1212 By setting S Register 61=1, all outgoing calls will be 56K TollSaver calls.

  • Page 71: Placing Voice Calls Using An Analog Phone Port

    Placing Voice Calls Using an Analog Phone Port Placing Voice Calls Using an Analog Phone Port To place an outgoing call, simply take the telephone handset or external fax machine off the hook, wait for a dial tone, and dial the destination telephone number. When you place a voice call, a B channel LED flashes amber, and then remains lit once the call is established.

  • Page 72: Troubleshooting

    ROUBLESHOOTING This chapter explains how to isolate and solve problems encountered with the 3C882 ISDN modem. Problems may stem from incorrect option settings or improper installation. This chapter covers the following main topics: Checking the basics Monitoring the LEDs Evaluating symptoms and solutions Using on-line help Finding more information Contacting technical support...

  • Page 73: Monitoring Leds

    Monitoring LEDs Verify that the ISDN cable is properly connected to the 3C882 ISDN modem and the ISDN wall jack. The 3C882 ISDN modem will not operate if connected to an analog telephone wall jack. Make sure that the 3C882 ISDN modem is connected directly into the ISDN wall outlet without connection to any intermediate telephone equipment (an NT1 device is not required with the 3C882...

  • Page 74: Monitoring The B Channel Leds

    Table 7-1 Symptoms, Causes, and Solutions Symptom Possible Cause Solution TEST LED remains An internal failure. Notify 3Com Technical Support that lit for more than a the 3C882 ISDN modem has failed the few minutes self-test. D channel remains Poor physical connection to...
  • Page 75 Evaluating Symptoms and Solutions Table 7-1 Symptoms, Causes, and Solutions Symptom Possible Cause Solution B channel LED(s) Problem with your computer Carefully monitor the B1 and B2 LEDs do not remain or application software or while attempting a call. These LEDs green or amber incompatible local or toll flash during call establishment and...

  • Page 76: Using On-Line Help

    Finding More Information For more information about the 3C882 ISDN modem, such as frequently asked questions, and specific technical notes, use 3Com’s fax service (1) (408) 727-7021 in the U.S. or visit 3Com’s World Wide Web site at http://www.3Com.com/. Contacting Technical Support...

  • Page 77: Rdering Isdn Service

    RDERING ERVICE This appendix describes how to order ISDN service. You can either let 3Com order ISDN service for you, or you can call your telephone company and order it yourself. Placing the ISDN Order Through 3Com Simply call 1-800-572-3Com to have your ISDN line ordered for you.
  • Page 78 Placing the ISDN Order Through Your Telephone Company Table A-1 ISDN Order Codes ISDN Order Code Number of Telephone Numbers Package K Package U * Having two telephone numbers assigned to an ISDN line allows both analog ports to be used simultaneously. If only one telephone number is assigned, the ISDN line can only place or receive one call at a time.

  • Page 79: At&T 5Ess Switch Ni1

    Placing the ISDN Order Through Your Telephone Company AT&T To order ISDN service for the AT&T® 5ESS switch, supply the 5ESS telephone company with the information provided in Switch Table A-2. Table A-2 Line Configuration for AT&T 5ESS NI1 Required Information Specification Line Type Standard (2B+D) National ISDN-1 line...

  • Page 80: At&T 5Ess Custom Switch

    Placing the ISDN Order Through Your Telephone Company AT&T To order ISDN service for the AT&T 5ESS Custom switch, 5ESS supply the telephone company with the information Custom provided in Table A-3. Switch Table A-3 Line Configuration for AT&T 5ESS Custom Required Information Specification Line Type...
  • Page 81 Placing the ISDN Order Through Your Telephone Company To order ISDN service for the Northern Telecom® DMS 100 Northern Telecom switch, supply the telephone company with the information provided in Table A-4. Switch Table A-4 Line Configuration for DMS 100 Required Information Specification Line Type...

  • Page 82: Siemens Ewsd Switch

    Placing the ISDN Order Through Your Telephone Company Siemens To order ISDN service for the Siemens® EWSD switch, supply EWSD the telephone company with the information provided in Switch Table A-5. Table A-5 Line Configuration for Siemens EWSD Required Information Specification Line Type Standard (2B+D) National ISDN-1 line...

  • Page 83: Codes

    AT C OMMANDS EGISTERS ESULT ODES The 3C882 ISDN modem AT commands are summarized in Table B-1, S registers in Table B-2, and result codes in Table B-3. AT Command Set Table B-1 summarizes the AT command set for the 3C882 ISDN modem.
  • Page 84 AT Command Set Table B-1 AT Command Set Summary (continued) Command Function (Example) Description &D DTR control (AT &D0) &D0 causes ISDN modem to ignore DTR from host. &D1 causes ISDN modem to enter command state on detecting on-off transition of DTR. &D2 causes ISDN modem to hang up current calls upon on-off transition of DTR and prepares serial port to accept AT...
  • Page 85 AT Command Set Table B-1 AT Command Set Summary (continued) Command Function (Example) Description Write configuration register Writes to a specific S register. (AT S60=64) Read on-line status: command Reads the status of any parameters that settings (AT \S) have been modified through AT commands and provides call status information.

  • Page 86: S Registers

    Table B-2 provides a complete list and descriptions of the S registers supported by the 3C882 ISDN modem. All S registers except S0 are the 3Com extended registers. S registers notated with an asterisk are stored in non-volatile memory and will not be cleared or returned to the default value if the ISDN modem is powered down.
  • Page 87 S Registers Table B-2 S Registers (continued) Registers Descriptions Terminal Initialization State: Indicates the status of the first TEI using SPID 1. This field is read-only. 0 — ISDN modem has not attempted initialization 1 — ISDN modem has initialized successfully using SPID 1 2 —...
  • Page 88 S Registers Table B-2 S Registers (continued) Registers Descriptions Voice Call Routing (bit map) 0 — Calls to either analog port are blocked 1 — Phone #1 to Phone port 1 only; Phone #2 calls blocked 2 — Phone #1 to Phone port 2 only; Phone #2 calls blocked 3 —...
  • Page 89 S Registers Table B-2 S Registers (continued) Registers Descriptions B Channel Protocol: 0 — QuickSelect (default) 1 — Async-Sync PPP conversion 2 — V.120 V.120 Frame Type: 0 — I frame (default) 1 — UI frame V.120 Maximum Frame Size (range 240–256): 256 —...

  • Page 90: Result Codes

    Result Codes Result Codes Table B-3 lists the 3C882 ISDN modem result codes. Table B-3 3C882 ISDN Modem Result Codes Short Form Long Form Meaning Indicates that the most recent command or action was successfully completed. RING Indicates that an incoming call is present and no AT Answer command is outstanding.

  • Page 91: 3C882 Isdn Modem Specifications

    PECIFICATIONS This appendix describes the physical specifications of the 3C882 ISDN modem and provides the pin assignments of the RS-232 COM port, PC serial cable, and Macintosh serial cable. 3C882 ISDN Modem Specifications Network Interface Integrated Services Digital Network (ISDN) Basic Rate telephone service provided by the telephone company Physical Interface...

  • Page 92: Com Port Pin Specifications

    RS-232 COM Port Pin Specifications RS-232 COM Port Pin Specifications The asynchronous RS-232-D COM port on the 3C882 ISDN modem, labeled RS-232, is a standard DB-25 female connector. The 3C882 ISDN modem asynchronous port pin assignments, shown in Table C-1, conform to standard definitions for data communications equipment (DCE).

  • Page 93: Pc Serial Cable Pin Specifications

    PC Serial Cable Pin Specifications PC Serial Cable Pin Specifications The DB25 male to DB9 female pin assignments for the PC serial cable are provided in Table C-2. Table C-2 PC COM Port Cable Pin Assignments DB9 Pin # Pin Name DB25 Pin # Data Carrier Detect (DCD) Receive Data (RD)

  • Page 94: Configuration Using Dos

    floppy drive of the PC. Create a new DOS directory. For example, to create a directory named 3Com on your C drive at the C:\> DOS prompt, type: md c:\3Com 2 Copy the INSTALL.EXE and README.TXT files from the 3ComImpact Windows &...
  • Page 95 Configuration Using DOS The configuration program launches and then the Port Settings screen appears. To move the cursor around the screen, use the [Up Arrow] and [Down Arrow] keys. To select a parameter, use the [Space Bar]. 4 Use the [Space Bar] to select the 3C882 ISDN modem’s COM port.
  • Page 96 Configuration Using DOS 11 Specify which Phone port should handle the calls associated with telephone number one. If you plan to use the 3C882 ISDN modem’s analog Phone ports, you will want to configure voice call routing by assigning telephone numbers to the analog ports. By default, calls to and from both ISDN telephone numbers ring the devices connected to both ports simultaneously.

  • Page 97: E Technical Support

    3Com Bulletin Board Service 3ComBBS contains patches, software, and drivers for all 3Com products, as well as technical articles. This service is available via modem or ISDN seven days a week, 24 hours a day. Access by Analog Modem To reach the service by modem, set your modem to 8 data bits, no parity, and 1 stop bit.

  • Page 98: World Wide Web Site

    56 Kbps. To access 3ComBBS using ISDN, dial the following number: (408) 654 2703 World Wide Web Site Access the latest networking information on 3Com’s World Wide Web site by entering our URL into your Internet browser: http://www.3Com.com/ This service features news and information about 3Com products, customer service and support, 3Com’s latest news...

  • Page 99: 3Comforum On Compuserve

    On-line Technical Services 3ComForum on CompuServe 3ComForum is a CompuServe-based service containing patches, software, drivers, and technical articles about all 3Com products, as well as a messaging section for peer support. To use 3ComForum, you need a CompuServe account. To use 3ComForum: 1 Log on to CompuServe.

  • Page 100: Support From Your Network Supplier

    In the U.S. and Canada, call (800) 876 3266 for customer service. Returning Products for Repair A product sent directly to 3Com for repair must first be assigned a Return Materials Authorization (RMA) number. A product sent to 3Com without an RMA number will be returned to the sender unopened, at the sender’s expense.

  • Page 101: Glossary

    LOSSARY Async-Sync PPP Conversion Asynchronous to synchronous PPP conversion. The 3C882 ISDN modem converts asynchronous PPP into synchronous (HDLC-based) PPP that can be transported in ISDN B channels to communications servers that have integrated ISDN BRI, PRI, or T1 access lines. AT commands ATtention Codes.
  • Page 102 LOSSARY COM port The communications port (also referred to as a serial port). The 3C882 ISDN modem communications port allows a maximum baud rate of 230.4 Kbps. Note that most computer COM ports only allow a maximum of 115.2 Kbps. However, accelerator cards can be purchased to increase the computer’s COM port rate to 230.4 Kbps.
  • Page 103 LOSSARY ISDN Integrated Services Digital Network. ISDN provides a digital telephone service which allows both data and voice communication over the same telephone line and at significantly faster speeds than the traditional POTs service. There are two types of lines which provide access to ISDN, BRI and PRI.
  • Page 104 LOSSARY Password Authentication Protocol. PAP is one of two PPP authentication protocols; CHAP is the other. An authentication protocol requests information to verify a valid user. PAP requests the user’s name and password for verification. POTS Plain old telephone service. Point-to-Point Protocol.
  • Page 105 NDEX call routing Numerics analog ports for Macintosh 4-12 3C882 specifications C-1 analog ports for PC using DOS D-3 3Com Bulletin Board Service analog ports for PC using (3ComBBS) E-1 Windows 3-11 3ComFacts E-3 Challenge Handshake Authentication 3ComForum E-3 Protocol (CHAP) 1-4...

  • Page 106: On-Line Technical Services E

    NDEX fax service. See 3ComFacts on-line help 7-5 front panel on-line technical services E-1 components 2-2 ordering ISDN service LED indicator definitions 2-3 for AT&T 5ESS Custom A-4 for AT&T 5ESS NI1 A-3 for Northern Telecom DMS 100 A-5 for Siemens EWSD A-6 installation 2-1 analog equipment 2-6 general steps 2-1...

  • Page 107: World Wide Web Site E

    NDEX serial port 1-3 connection for Macintosh 2-5 connection for PC 2-5 Siemens EWSD switch A-6 specifications C-1 switch type A-3 to A-6 technical support E-1 Test LED 7-2, 7-3 troubleshooting 7-1 checking the basics 7-1 evaluating symptoms and solutions 7-3 monitoring LEDs 7-2 V.120 protocol 1-2 voice calls...
  • Page 108 No updates are provided. 3Com's sole obligation with respect to this express warranty shall be (at 3Com's discretion) to refund the purchase price paid by Customer for any defective software products, or to replace any defective media with software which substantially conforms to 3Com's applicable published specifications.
  • Page 109 CUSTOMER'S SOLE REMEDY FOR BREACH OF THAT WARRANTY SHALL BE REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE PAID, AT 3COM'S OPTION. TO THE FULL EXTENT ALLOWED BY LAW, THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL...
  • Page 110 TRADE SECRETS; TITLE: You acknowledge and agree that the structure, sequence and organization of the Software are the valuable trade secrets of 3Com and its suppliers. You agree to hold such trade secrets in confidence. You further acknowledge and agree that ownership of, and title to, the Software and all subsequent copies thereof regardless of the form or media are held by 3Com and its suppliers.
  • Page 111 ENTIRE AGREEMENT: This License Agreement sets forth the entire understanding and agreement between you and 3Com and may be amended only in a writing signed by both parties. 3Com is a registered trademark of 3Com Corporation.
  • Page 112 This booklet is available from the U.S. Government Printing Office, Washington, D.C. 20402. Stock No. 004-000-00345-4. NOTE: In order to maintain compliance with the limits of a Class B digital device, 3Com requires that you use quality interface cables when connecting to this device. Changes or modifications not expressly approved by 3Com could void the user’s authority to operate this equipment.
  • Page 113 CANADIAN NOTICE The Industry Canada label identifies certified equipment. This certification means that the equipment meets certain telecommunications network protective, operation, and safety requirements. The Department does not guarantee the equipment will operate to the users’ satisfaction. Before installing this equipment, users should ensure that is permissible to be connected to the facilities of the local telecommunications company.
  • Page 114 ® 1996, 3Com Corporation...

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