Glossary, Async-Sync PPP Conversion, Channel | 3Com 3C882 instruction

GLOSSARY

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. AT commands are used to conﬁgure and operate the 3C882 ISDN modem. These commands can be sent either automatically or manually through your communications software.

Autobaud

Automatic baud rate detection. Autobaud automatically detects the baud rate of your computer’s serial port.

B channel

Bearer channel. In ISDN communications, a B channel transmits data and voice trafﬁc at a rate of up to 64 Kbps.

BRI

Basic Rate Interface. A BRI line is one of two access methods to the ISDN. Each BRI consists of two 64 Kbps B channels and one 16 Kbps D channel for each ISDN line.

CHAP

Challenge Handshake Authentication Protocol. CHAP is one of two PPP authentication protocols; PAP is the other. An authentication protocol requests information to verify a valid user. CHAP is a stronger authentication method because it uses encryption and may repeatedly request veriﬁcation of the identity of the user any time after link establishment.

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3Com 3C882 manual Glossary, Async-Sync PPP Conversion, Channel

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 Advanced configuration Chapter How to Use This GuideAbout this Guide Introduction Conventions Introduction Network Access with the 3C882 Isdn Modem 3C882 Isdn modem provides the following features 3C882 Isdn Modem FeaturesEasy Installation and Use Protocols High PerformanceIsdn Standards and Interface Ansi V.120 rate adaption Diagnostics Voice FeaturesWarranty Security Before You Install the 3C882 Isdn Modem 3C882 Isdn Modem Package Contents Apple Macintosh Requirements IBM PC or Compatible Requirements Isdn Information Isdn Switch TypeIsdn Information Sheet 3ComImpact IQ Isdn Modem 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 As power is supplied to the unit Front Panel LED Indicator DeﬁnitionsColor Description Green 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 IBM-COMPATIBLE PC Configuration for ANConﬁguring the 3C882 Isdn Modem for a PC Main steps are shown in Figure Click OK Installing the 3C882 SoftwareTo install the 3C882 Isdn modem software You will see a start message, as shown in Figure Running Spid WizardDouble-click the 3ComImpact IQ 3.0 icon 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 Autobaud Enabled Auto Answer DisabledType Answer Placing Isdn Data Calls Placing and ReceivingCalls 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 Receiving Isdn Data Calls When the 3C882 Isdn modem receives a voice call,An example is as follows Atdd 1 908 555 Channels ﬂash and then remain lit Receiving Voice Calls Using an Analog Phone Port Placing Voice Calls Using an Analog Phone Port Checking the Basics Troubleshooting Monitoring the D Channel LED Monitoring LEDsMonitoring the Test LED Monitoring the B Channel LEDs Evaluating Symptoms and Solutions LED remains lit Properly configured You receive a Symptom Possible Cause SolutionCannot be sent Upon power up Previous firmware Do not remain Or application software or Finding More Information Contacting Technical Support Using On-Line HelpDownloading Firmware to Your 3C882 Isdn Modem Following on-line help is available Placing the Isdn Order Through 3Com Ordering Isdn ServicePlacing the Isdn Order Through Your Telephone Company Give the representative the 3C882 Isdn modem Isdn code Number of Telephone Numbers Package K Package U Table A-1 Isdn Order Codes Circuit-switched Data SwitchTelephone company with the information provided Table A-2 Switch Switch, supply the telephone company with the information To order Isdn service for the Northern Telecom DMSProvided in Table A-4 Dynamic Key System Ekts Flexible Call Offering FCO Yes † Ewsd AT Command Set AT Commands REGISTERS, and Result Codes Answer mode only Host computer default\Q0 disables flow control Hardware flow control default Reset AT Z Settings AT \S+++ Enter command state \T0 disables inactivity timer default 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 Receive Data RD Send Data SD PC Serial Cable Pin SpeciﬁcationsMacintosh Serial Cable Pin Speciﬁcations To copy the README.TXT ﬁle, at the C\3Com prompt, type Configuration UsingConﬁguration Using DOS Use the Space Bar to select the 3C882 Isdn modem’s COM port Configuration Using DOS Technical Support On-line Technical Services3Com Bulletin Board Service Call the telephone number nearest you World Wide Web Site 3ComForum on CompuServe 3ComFacts Automated Fax ServiceTo use 3ComForum Log on to CompuServe Press Return to see the 3ComForum main menu Support from Your Network Supplier U.S. and Canada, call 800 876 3266 for customer serviceSupport from 3Com Returning Products for Repair Channel GlossaryAsync-Sync PPP Conversion COM port Layer Isdn 120 Plain old telephone service Index Analog equipment installation 2-6 analog portNumerics Apple macintosh requirements 1-6 Async-Sync PPP Registers B-4 Serial cable installation Data Using AT commands 6-2 voiceDMS 100 A-5 Result codes B-8 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