Troubleshooting | 3Com ISDN Modem manual

8 TROUBLESHOOTING

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.

Your ISDN line provisioning may also affect your 3C882 ISDN modem’s performance. Refer to Chapter A, “Ordering ISDN Service” for assistance.

This chapter covers the following main topics:

■Checking the basics

■Monitoring the LEDs

■Evaluating symptoms and solutions

■Identifying error codes

■Using on-line help

■Finding more information

■Contacting technical support

■Downloading ﬁrmware

■Microkey driver error codes

■Restoring the modem to Autobaud

There are no user-serviceable parts inside your 3C882 ISDN modem. Unauthorized opening of the unit will void the warranty.

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3Com ISDN Modem manual Troubleshooting

Contents

3COMIMPACTIQ External Isdn Modem User Guide 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Year Limited WarrantyPage Contents Call Forwarding Configuration for AN Apple Macintosh Computer Placing Isdn Data Calls AT&T 5ESS Custom Switch A-6 Registers Specifications Conﬁguration for Two Telephone Numbers and Two Analog Computer to 3C882 Isdn Modem COM Port Connection 3C882 Conﬁguration Steps for a Macintosh FreePPP Setup Screen Text Conventions TablesPage About this Guide How to Use This GuideIntroduction Appendix B Conventions Introduction 3C882 Isdn Modem Features Easy Installation and Use3C882 Isdn modem provides the following features Protocols High PerformanceIsdn Standards and Interface Ansi V.120 rate adaption 3C882 Isdn Modem Package Contents Before You Install the 3C882 Isdn Modem Apple Macintosh Requirements IBM PC or Compatible Requirements Isdn Information Sheet Isdn Information Introduction Main hardware installation steps are depicted Installing the 3C882 Color Description Familiarizing Yourself with the 3C882 Isdn ModemGreen LED remains lit but does not flash You will need the following type of serial cable Installing a Serial Cable To install the 3C882 Isdn modem serial cable 1Installing the Isdn Cable Installing Analog EquipmentTo install an analog device Analog Equipment Connection Power Cable Connection Installing the Power Cable This completes the 3C882 Isdn modem installation IBM-COMPATIBLE PC Configuration for ANRunning Windows Conﬁguring the 3C882 Isdn Modem for a PC Installing the 3C882 Software To install the 3C882 Isdn modem softwareClick OK Running the Spid Wizard Click OK to complete the installation You will see a start message, as shown in Figure Double-click the 3ComImpact IQ icon shown in Figure First Telephone Number Dialog Box for PC Second Telephone Number Dialog Box for PC Appears Conﬁguration Dialog Box for PC Click Finish Configuration for AN IBM-COMPATIBLE PC Running Windows Appears Click Finish Conﬁguring Multilink PPP Conﬁguring Voice Call Routing Conﬁguring the B Channel Rate One Telephone Number and Two Analog Devices 10 Voice Call Routing Default Setting 11 Conﬁguration for One Telephone Number and Two Devices Verifying the Conﬁguration Configuration for AN IBM-COMPATIBLE PC Running Windows 13 New Hardware Dialog Box Setup Using Windows 14 Install From Disk Dialog Box Install From Disk dialog box appears, as shown Check Show All Devices Setup Using Windows NT 3.5.1 RAS 16 Network Settings Dialog Box Remote Access Setup dialog box appears Remote Access Setup dialog box appears, as shown in Figure Click Continue Setup for Windows NT Setup for Windows NT 4.0 19 Modem Manufacturers and Models Dialog Box New Modem Manufacture screen will open, as shown in Figure Dialog box indicates successful setup Click Finish Conﬁgure Dial-Up NetworkingDial Up Networking for Windows Click Finish Click Next to view the Connection Type dialog box Dial-up Networking for Windows NT Service Provider dialog box opens 20 New Phonebook Entry Wizard New Phonebook Entry screen opens, as shown in Figure 21 Phonebook Entry Screen Click the TCP/IP Settings button Setup for 230Kbps Setting up 230K for Windows NT3C882 Isdn modem allows for transfer rates of up to Click Conﬁgure Select 3ComImpact IQ 230K Setting up 230K for Windows 95 and Windows NT 3C882 Isdn modem. This will set the baud rate to 230.4 Kbps Setup for 230Kbps Configuration for AN IBM-COMPATIBLE PC Running Windows Conﬁguring the 3C882 Isdn Modem for a Macintosh Computer Configuration for AN Apple Macintosh Computer Message box appears as shown in Figure Installation Message Box Double-click the 3ComImpact IQ program icon shown in Figure Click OK This completes the software installation Spid Wizard Start Screen Select Modem Port Screen First Telephone Number Screen for Macintosh Second Telephone Screen for Macintosh Conﬁguration Dialog Box for Macintosh Quit. Click Quit to leave the Conﬁguration dialog box Conﬁguring the B Channel Rate Conﬁguring Voice Call Routing RS-232 12 Conﬁguration to ring both ports simultaneously Layer 1 UP Spid 1 Init if required Set Up Using OT/PPP and Open Transport Conﬁguring Internet Access for a Macintosh Computer Configuring Internet Access for a Macintosh Computer 14 OT/PPP Modem Control Panel 15 TCP/IP Control Panel Click on the Accounts tab and select New Set Up Using FreePPP with Open Transport 17 FreePPP Account Screen Account screen will open as shown in Figure 18 FreePPP Connection Screen Configuring Internet Access for a Macintosh Computer 20 FreePPP TCP/IP Control Panel Choose FreePPP from the Connect via pop up menu Advanced Conﬁguration Parameter Default Values Advanced Configuration QuickSelect Auto Answer CompressionBaud Rate Changing the Parameter Settings TypeThen press Enter or Return Autobaud Enabled $B0 Enabled %C2Incoming Outgoing calls S70=3 Auto Answer Answer Advanced Configuration Supplementary Voice Features FeaturesSupplementary Voice Call Forwarding Isdn Call Waiting How to Use Call Waiting How Do Do ThisThen put on hold Call? How to Use Call Conference How Do Do This TroubleshootingConference call? Press and release the switch hook button Call Conference Call Transfer Call Drop Switch back to the first call? Isdn Service from Paciﬁc Bell This completes the procedure for Paciﬁc Bell Isdn users Placing and Receiving CallsPlacing Isdn Data Calls Placing Calls Manually Placing Calls Automatically Placing Multilink PPP Calls Placing a TollMizer Call Receiving Isdn Data Calls Receiving Voice Calls Using an Analog Phone Port Placing Voice Calls Using an Analog Phone PortWhen the 3C882 Isdn modem receives a voice call, Channels ﬂash and then remain lit Isdn Call Logging Troubleshooting Troubleshooting Checking the Basics Monitoring LEDsMonitoring the Test LED Monitoring the B Channel LEDs Monitoring the D Channel LEDMonitoring the SD LED Monitoring the RD LED Monitoring the DTR LED Evaluating Symptoms and Solutions Circuit-switched voice and data That your line is configured forLine Service Switch type has been LED remains lit Properly configured You receive a Possible Cause Solution Connection hasUpon power up Previous firmware Lights Disabled Does not work By default S76=1. Use terminal Symptom Possible Cause SolutionAppropriate value. Refer to Result Codes for the available options Microkey Error Codes Restoring the 3C882 Isdn Modem to Autobaud Error Code Possible Cause Solution 1022 Using On-Line Help Ordering Isdn Service Placing the Isdn Order Through 3ComPlacing the Isdn Order Through Your Telephone Company Appendix a Ordering Isdn Service What Do I Need To Support Supplementary Voice Features? Isdn Line Parameter Tables Table A-2 Line Conﬁguration for AT&T 5ESS NI1 AT&T 5ESS Switch NI1 AT&T 5ESS Custom Switch Table A-4 Line Conﬁguration for DMS NorthernTelecomDMS 100 Switch Table A-5 Line Conﬁguration for Siemens Ewsd Siemens Ewsd Switch AT Command Set AT Commands REGISTERS, and Result Codes Command at any speed default Command state on detecting on-offHost computer default Answer mode only Initial configuration set \T0 disables inactivity timer defaultReset AT Z System reset Registers except S0 are the 3Com extended registers Registers Isdn Phone #1 calls blocked Phone #2 to Phone port 2 only DefaultPhone #1 calls blocked Phone #2 to Phone port 1 or S65 Isdn Call Logging for Voice Calls for Phone Port S75 Connection Delay Locally Assigned Address Public Switched Network Directory Number defaultInternet Protocol IP Address Ieee 802.1 Globally Assigned MAC Address Table B-3 lists the 3C882 Isdn modem result codes Result Codes Appendix B AT COMMANDS, S REGISTERS, and Result Codes 3C882 Isdn Modem Speciﬁcations Specifications Clear to Send CTS From Isdn modem RS-232 COM Port Pin Speciﬁcations PC Serial Cable Pin Speciﬁcations Macintosh Serial Cable Pin SpeciﬁcationsReceive Data RD Send Data SD Appendix C Specifications Configuration Using Conﬁguration Using DOSTo copy the README.TXT ﬁle, at the C\3Com prompt, type Use the Space Bar to select the 3C882 Isdn modem’s COM port Configuration Using DOS Appendix D Configuration Using DOS Async-Sync PPP Conversion GlossaryChannel Call Drop COM port Chap Kbps FirmwareLayer Multilink PPP PAP Plain old telephone service Glossary Glossary Apple Macintosh requirements 1-6 Async-Sync PPP Numerics Pinout speciﬁcations C-2 compression 5-3 conﬁguration FreePPPData calls placing Troubleshooting Environmental operating range C-1 SetupDTR LED monitoring LEDs B1 channel For Northern Telecom DMS 100 A-7 for Siemens Ewsd A-8 Result codes B-9 Ringer equivalence number C-1 Ordering Isdn service Warranty 1-4 Windows Plug and Play setup Windows NT 3.5.1 3-17 Windows NT 4.0 Page Limited Warranty 3Com Corporation Bayfront Plaza 3COM END User Software License Agreement For civilian agencies Interference Handbook Canadian Notice