GLOSSARY 3
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.
Kbps
Kilobits per second. The rate at which data is transmitted between communication equipment such as ISDN modems.
Layer 1
In ISDN communications, the physical layer of communications between the communication equipment. If layer one is down, there is no ISDN connection between the devices. The status bar in the 3C882 ISDN modem Configuration screen indicates layer 1 status.
Multilink PPP
Multilink PPP is a protocol which provides a method for combining multiple PPP connections. With a BRI line, Multilink PPP aggregates the two 56 Kbps or 64 Kbps I SDN B channels, creating a virtual single digital connection of up to 128 Kbps.
National ISDN
An ISDN standard that enables consistency in ISDN service features across different vendors’ equipment and switches for North America.
Network terminator (NT1)
A device that terminates the ISDN line. The NT1 is built into the 3C882 ISDN modem.
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 Guide
Advanced configuration Chapter
About this Guide
Conventions
Introduction
Network Access with the 3C882 Isdn Modem
Easy Installation and Use
3C882 Isdn Modem Features
3C882 Isdn modem provides the following features
Ansi V.120 rate adaption
High Performance
Protocols
Isdn Standards and Interface
Security
Voice Features
Diagnostics
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 Type
Isdn 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 Definitions
As 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 AN
IBM-COMPATIBLE PC
Configuring the 3C882 Isdn Modem for a PC
To install the 3C882 Isdn modem software
Installing the 3C882 Software
Click OK
Double-click the 3ComImpact IQ 3.0 icon shown in Figure
Running Spid Wizard
You 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 Disabled
Autobaud Enabled
Type
Calls
Placing and Receiving
Placing 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 the Test LED
Monitoring LEDs
Monitoring the D Channel LED
Monitoring the B Channel LEDs
Evaluating Symptoms and Solutions
Do not remain Or application software or
Symptom Possible Cause Solution
LED remains lit Properly configured You receive a
Cannot be sent Upon power up Previous firmware
Following on-line help is available
Using On-Line Help
Finding More Information Contacting Technical Support
Downloading Firmware to Your 3C882 Isdn Modem
Give the representative the 3C882 Isdn modem Isdn code
Ordering Isdn Service
Placing 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
Switch
Circuit-switched Data
Telephone company with the information provided
Switch
Dynamic
To order Isdn service for the Northern Telecom DMS
Switch, 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 default
Answer mode only
\Q0 disables flow control
\T0 disables inactivity timer default
Settings AT \S
Reset 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
Macintosh Serial Cable Pin Specifications
PC Serial Cable Pin Specifications
Receive Data RD Send Data SD
Configuration Using DOS
Configuration Using
To 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
3Com Bulletin Board Service
On-line Technical Services
Technical Support
Call the telephone number nearest you
World Wide Web Site
Press Return to see the 3ComForum main menu
3ComFacts Automated Fax Service
3ComForum on CompuServe
To use 3ComForum Log on to CompuServe
Returning Products for Repair
U.S. and Canada, call 800 876 3266 for customer service
Support from Your Network Supplier
Support from 3Com
Async-Sync PPP Conversion
Glossary
Channel
COM port
Layer
Isdn
120
Plain old telephone service
Apple macintosh requirements 1-6 Async-Sync PPP
Analog equipment installation 2-6 analog port
Index
Numerics
Result codes B-8
Data Using AT commands 6-2 voice
Registers 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