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Country	Telephone Number		Country	Telephone Number

Australia	800 123853		Netherlands	06 0228049
Belgium	0800 71279		Norway	800 11062
Denmark	800 17319		Portugal	0505 442607
Finland	98 001 4444		Russia (Moscow only)	956 0815
France	05 90 81 58		Spain	900 964445
Germany	0130 8180 63		Sweden	020 792954
Italy	1678 99085		U.K.	0800 626403

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3Com 3C882 manual 3ComForum on CompuServe, 3ComFacts Automated Fax Service, To use 3ComForum Log on to CompuServe

Contents

3COMIMPACT IQ External Isdn Modem User Guide 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Year Limited Warranty Contents Placing Isdn Data Calls Conﬁguring Multilink PPP Registers AT&T 5ESS Custom Switch A-4 Support from 3Com E-4 Returning Products for Repair E-4 World Wide Web Site Figures Main 3C882 Conﬁguration Steps for a Macintosh Pin Descriptions Tables Introduction How to Use This GuideAdvanced configuration Chapter About this Guide Conventions Introduction Network Access with the 3C882 Isdn Modem 3C882 Isdn Modem Features Easy Installation and Use3C882 Isdn modem provides the following features Ansi V.120 rate adaption High PerformanceProtocols Isdn Standards and Interface Security Voice FeaturesDiagnostics Warranty Before You Install the 3C882 Isdn Modem 3C882 Isdn Modem Package Contents Apple Macintosh Requirements IBM PC or Compatible Requirements 3ComImpact IQ Isdn Modem Isdn Switch TypeIsdn Information Isdn Information Sheet Before You Install the 3C882 Isdn Modem Main hardware installation steps are depicted Installing the 3C882 Familiarizing Yourself with the 3C882 Isdn Modem Front Panel LED Indicators Green Front Panel LED Indicator DeﬁnitionsAs power is supplied to the unit Color Description You will need the following type of serial cable Installing a Serial Cable Installing the Isdn Cable Analog Equipment Connection Installing Analog Equipment Installing Analog Equipment Power Cable Connection Installing the Power Cable Main steps are shown in Figure Configuration for ANIBM-COMPATIBLE PC Conﬁguring the 3C882 Isdn Modem for a PC Installing the 3C882 Software To install the 3C882 Isdn modem softwareClick OK Running Spid Wizard Double-click the 3ComImpact IQ 3.0 icon shown in FigureYou will see a start message, as shown in Figure First Telephone Number Dialog Box for PC Second Telephone Number Dialog Box for PC Conﬁguration dialog box buttons do the following Click Finish Configuring the 3C882 Isdn Modem for a PC Appears Click Finish Conﬁguring Multilink PPP Conﬁguring Voice Call Routing Conﬁguring the B Channel Rate Configuring the 3C882 Isdn Modem for a PC 11 Conﬁguration for One Telephone Number & Two Devices Verifying the Conﬁguration Configuring the 3C882 Isdn Modem for a PC 12 New Hardware Dialog Box Setup Using Windows 13 Install From Disk Dialog Box 15 Install New Modems Dialog Box 16 Modem Manufacturers and Models Dialog Box Setup Using Windows NT RAS 18 Remote Access Setup Dialog Box 17 Network Settings Dialog Box Conﬁgure Port dialog box appears Remote Access Setup dialog box appears Conﬁguring the 3C882 Isdn Modem for a Macintosh Computer Configuration for AN Apple Macintosh Computer Click Continue. -3 appears Message box appears Click Continue. -4 appears Click OK This completes the software installation procedure Select Modem Port Screen 3ComImpact IQ Program Icon Spid Wizard Start Screen 10 First Telephone Number Screen for Macintosh 11 Second Telephone Screen for Macintosh 12 Successful Conﬁguration Screen Quit. Click Quit to leave the Conﬁguration dialog box Configuring the 3C882 Isdn Modem for a Macintosh Computer 15 Conﬁguration for One Telephone Number per Device Verifying the Conﬁguration Configuring the 3C882 Isdn Modem for a Macintosh Computer Advanced Conﬁguration Parameter Default Values Advanced Configuration DBA Baud Rate Auto Answer Send the command AT $B 230400 to the 3C882 Isdn modem Changing The Parameter Settings Answer Auto Answer DisabledAutobaud Enabled Type Placing and Receiving CallsPlacing Isdn Data Calls Placing Calls Manually Placing Calls Automatically Placing Multilink PPP Calls An example is as follows ATD 1 908 555 1212 & 1 908 555 Placing a 56K TollSaver Call Channels ﬂash and then remain lit When the 3C882 Isdn modem receives a voice call,Receiving Isdn Data Calls An example is as follows Atdd 1 908 555 Receiving Voice Calls Using an Analog Phone Port Placing Voice Calls Using an Analog Phone Port Checking the Basics Troubleshooting Monitoring LEDs Monitoring the Test LEDMonitoring the D Channel LED Monitoring the B Channel LEDs Evaluating Symptoms and Solutions Do not remain Or application software or Symptom Possible Cause SolutionLED remains lit Properly configured You receive a Cannot be sent Upon power up Previous firmware Following on-line help is available Using On-Line HelpFinding More Information Contacting Technical Support Downloading Firmware to Your 3C882 Isdn Modem Give the representative the 3C882 Isdn modem Isdn code Ordering Isdn ServicePlacing the Isdn Order Through 3Com Placing the Isdn Order Through Your Telephone Company Number of Telephone Numbers Package K Package U Table A-1 Isdn Order Codes Table A-2 SwitchCircuit-switched Data Telephone company with the information provided Switch Dynamic To order Isdn service for the Northern Telecom DMSSwitch, supply the telephone company with the information Provided in Table A-4 Key System Ekts Flexible Call Offering FCO Yes † Ewsd AT Command Set AT Commands REGISTERS, and Result Codes Hardware flow control default Host computer defaultAnswer mode only \Q0 disables flow control \T0 disables inactivity timer default Settings AT \SReset AT Z +++ Enter command state Registers except S0 are the 3Com extended registers Registers Isdn Default S65 Isdn Caller ID for Voice Calls for Phone Port S75 Connection Delay Table B-3 lists the 3C882 Isdn modem result codes 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 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 On-line Technical Services 3Com Bulletin Board ServiceTechnical Support Call the telephone number nearest you World Wide Web Site Press Return to see the 3ComForum main menu 3ComFacts Automated Fax Service3ComForum on CompuServe To use 3ComForum Log on to CompuServe Returning Products for Repair U.S. and Canada, call 800 876 3266 for customer serviceSupport from Your Network Supplier Support from 3Com Glossary Async-Sync PPP ConversionChannel COM port Layer Isdn 120 Plain old telephone service Apple macintosh requirements 1-6 Async-Sync PPP Analog equipment installation 2-6 analog portIndex Numerics Result codes B-8 Data Using AT commands 6-2 voiceRegisters B-4 Serial cable installation DMS 100 A-5 Index Limited Warranty Santa Clara, CA 95052-8145 408 3COM END User Software License Agreement For civilian agencies Interference Handbook Canadian Notice  1996, 3Com Corporation