US Robotics 3CP3468 User manual

TABLE OF CONTENTS
1 Introduction
About Your 3Com U. S. Robotics ISDN Terminal Adapter
ISDN TA Features
Package Contents
Before You Install
System Requirements for Connections CD-ROM
2 Installing Your ISDN TA
Familiarizing Yourself with Your ISDN TA
Connecting Your ISDN TA to Your Computer
Connecting the ISDN Cable
Connecting Analog Equipment to Your ISDN TA
Connecting the Power Cable
3 Installing Software for Your ISDN TA
After Connecting Your ISDN TA
Installing ControlCenter
4 Basic Configuration
Starting ControlCenter for the First Time
Basic Data and Voice Settings
5 Advanced Configuration
Changing the Data Protocols Used by Your ISDN TA
Adjusting Your ISDN TA’s PPP Settings
Using Dynamic Bandwidth Allocation
Using Always On/Dynamic ISDN
Using Asynchronous 128K and Advanced Asynchronous 128K
Using Your ISDN TA on a Leased Line
Returning Your ISDN TA’s Settings to the Factory Defaults
Setting SPIDs, Telephone Numbers, and TEIs Manually
6 Voice Features
Supported Voice Features
Enabling Voice Features
Advanced Voice Configuration
7 Getting Online with Your ISDN TA
Windows 95 or 98
Windows NT 4.0
Macintosh
Other Operating Systems
8 Dialing, Storing Phone Numbers, and Logging Calls
Placing Calls Manually
Dialing for MultiLink PPP
Dialing for AO/DI Connections
9 Updating Your ISDN TA
Using Instant Update
Flashing Your ISDN TA from Disk
Flashing Your ISDN TA Manually with .XMP Flash
10 Using Protocol Decode
11 Configuring Your ISDN TA Using AT Commands
Typing AT Commands
ATI12 (Switch Settings)
ATI15 (Phone Port Settings)
ATI16 (Data Protocol Settings)
12 Troubleshooting
Appendix A – Ordering ISDN Service
Placing Your ISDN Order through 3Com
Placing Your Order through Your Telephone Company

Appendix B – AT Commands and S Registers
Using AT Commands
Basic AT Commands
AT& Commands
AT* Commands
AT# Commands
S Registers
Appendix C – Connect Messages
Appendix D – Specifications
ISDN Terminal Adapter Specifications
RS-232 Port Pin Specifications
Nine-Pin-to-25-Pin Serial Cable Specifications
Macintosh Serial Cable Pin Specifications
Appendix E – Glossary
Appendix F – Copyright Information
Appendix G – Regulatory and Warranty Information

INTRODUCTION
About Your 3Com U.S. Robotics ISDN Terminal
Adapter
This 3Com U.S. Robotics ISDN Terminal Adapter allows you to take
advantage of Integrated Services Digital Network, a much faster way to
connect to the Internet, corporate networks, or other online services. An
ISDN line can carry data, voice, and video transmissions at the same
time over a single line and support multiple devices on that line.
Accordingly, an ISDN line can be used for all of your communications
needs. Using your 3Com U.S. Robotics ISDN Terminal Adapter (ISDN
TA), you can make or receive regular telephone calls even while you
are connected to the Internet or another online service. And using other
analog devices, such as your fax machine, while you are online is just
as easy.
Not only are ISDN connections convenient, but they are also fast –
more than twice as fast as your analog modem connection. Your ISDN
TA transmits data at speeds of up to 128 Kbps with the highest
reliability and error-free performance possible. With compression and a
high-speed serial port, it can reach transmission speeds of up to 230.4
Kbps. And using USB, these speeds can be even higher.
ISDN TA Features
Your 3Com U.S. Robotics ISDN TA features the following.
Easy Installation and Use
 AutoSPID enables the ISDN TA to download Service Profile ID
and telephone number information from the ISDN line (if
available).
 SPID Wizard automatically configures your telephone company
switch information and Service Profile ID numbers.
 ControlCenter, an easy-to-use graphical interface, can be used to
configure the ISDN TA’s parameters.
 QuickSelect™ protocol detection discerns the protocol, such as
V.120 or PPP, being used by an incoming data transmission and
adapts to that protocol.
 Bellcore National ISDN Ordering Codes support makes ordering
a variety of feature-rich ISDN services easier.
 Plug-and-Play installation.
High Performance
 Stac™, Ascend™, and Microsoft™ compression.
 An asynchronous RS-232 data port for connecting to your
computer at speeds of up to 230.4 Kbps.
 A 12 Mbps Universal Serial Bus (USB) port.

Protocols
 Multilink PPP (RFC 1990).
 PPP (RFC 1661).
 Always On/Dynamic ISDN (AO/DI).
 V.120 rate adaptation.
 Asynchronous 128K (3Com proprietary).
 Advanced Asynchronous 128K (3Com proprietary).
ISDN Standards and Interface
 Complete digital network termination (Basic Rate ISDN U
interface with built-in NT1).
 Compatible with Lucent, Northern Telecom, and Siemens
switches.
Security
 Password Authentification Protocol (PAP) and Challenge
Handshake Protocol (CHAP) support on both single-channel and
Multilink PPP calls.
 Microsoft Encrypted Password (MS-CHAP) support.
 ISDN Call Logging displays the five latest outgoing and incoming
phone numbers dialed for both voice and data calls.
Voice Features
 Dynamic Voice Override allows you to place or receive voice
calls while a Multilink PPP or Advanced Asynchronous 128 K
transmission is active.
 Two analog ports for attaching telephone equipment, such as
touch-tone telephones, fax machines, or analog modems, to the
ISDN line.
 Support for a variety of supplementary voice services, such as
Call Waiting, Call Forwarding, Caller ID, three-way conference
calling options, and message waiting indicator.
Cost Saving Features
 Dynamic Bandwidth Allocation manages the data flow on your
ISDN line’s B-channels.
 Always On/Dynamic ISDN optimizes the use of your ISDN line
by taking better advantage of your ISDN line’s D-channel.
 TollMizer™ places data calls over a voice connection saving you
the additional charge for a data call.

Upgradability
 Instant Update automatically downloads updated versions of your
ISDN TA’s code.
Diagnostics
 ISDN Signaling Protocol Decode.
 PPP Protocol Decode.
Warranty
 Five-year limited warranty.
Package Contents
Make sure your ISDN TA’s package contains:
 3Com U. S. Robotics ISDN Terminal Adapter
 Power cable with an AC wall adapter
 ISDN telephone cable
 USB cable
 Set of rubber feet
 3Com U. S. Robotics ISDN Connections™ CD-ROM
Before You Install
To install your ISDN TA, you must have:
 ISDN service at your location. See the chapter “Ordering ISDN
Service,” for more information.
 An available RJ-45 or RJ-11 outlet.
 ISDN configuration information supplied by your telephone
company when you order ISDN service.
 A computer that meets the system requirements described in the
next section, “System Requirements.”
 For IBM-compatible PC users, a straight-through RS-232 modem
serial cable with one 25-pin male end and one end to match the
female serial port on your computer. Or a computer that supports
USB.
See the chapter “Installing Your ISDN TA,” for more information
about your serial cable.
 For Macintosh users, a serial cable with one 25-pin male end and
one mini DIN eight-pin male serial cable. Or a computer that
supports USB.

System Requirements for Connections CD-
ROM
Note: Your ISDN TA will work with any computer that supports
modem-type equipment using a serial connection. The system
requirements below apply only to the software available on the
Connections CD-ROM that came with your ISDN TA.
An IBM-compatible PC must have:
 486 DX or Pentium® processor
 Windows® 95, 98, or NT (Windows 98 with Service Pack 1 is
required to use USB.)
 8 MB RAM
 2 MB hard drive space (plus space for a Web browser if you don’t
already have one installed)
 Double-speed CD-ROM drive
 Available serial or USB port
An Apple® Macintosh® must have:
 68030 processor (PowerPC® recommended)
 System 7.1 or higher (System 8.1 with System Enabler 1.0 or
System 8.5 is required to use USB.)
 8 MB RAM (16 MB recommended)
 Double-speed CD-ROM drive
 3 MB hard drive space (plus space for a Web browser if you don’t
already have one installed)
 An available serial or USB port

INSTALLING YOUR ISDN TA
Familiarizing Yourself with Your ISDN TA
You should take a look at the front and back panels of your ISDN TA
before installing it.
Front Panel
Figure 2-1 Front Panel LEDs
 Alert – Lights amber when there is an ISDN connection problem.
Blinks amber when code is being updated.
Blinks green when there is voice mail waiting for a telephone
connected to the ISDN TA through one of the Analog Device
Ports.
This LED is off when the ISDN TA is operating normally.
 PWR – Lights green when power is on and remains lighted as
long as power is supplied to the unit.
 B1 – Lights green when there is a data or voice transmission on
B-channel 1.
 B2 – Lights green when there is a data or voice transmission on
B-channel 2.
 SD – Lights green when information is being transmitted from the
computer to the ISDN TA.
 RD – Lights green when information is being transmitted from
the ISDN TA to the computer.
 DTR – Lights green when an application is communicating with
your ISDN TA.
 CD – Lights green when there is an active data connection
between the ISDN TA and a remote site, such as an Internet
Service Provider or corporate network. (When CD is lighted but
B1 and B2 are not, this typically indicates that a data connection
has been established over the ISDN line’s D-channel in AO/DI
mode.)

Back Panel
Figure 2-2 Back Panel Connectors
 Power – Connects the ISDN TA to the power cord and adapter,
which deliver 12V DC power
 Analog Device Ports 1 and 2 – Connect the ISDN TA to two
analog devices, such as a telephone or fax machine
 USB port – Connects the ISDN TA to your computer’s 12 Mbps
USB port (if supported on your system)
 Config button – Resets the ISDN TA to its factory default
settings
 RS-232 port – Connects the ISDN TA to your computer’s serial
port at rates of up to 230.4 Kbps
 ISDN port – Connects the ISDN TA to your ISDN outlet (like a
telephone line’s wall jack)
Connecting Your ISDN TA to Your Computer
Your ISDN TA can be connected to your computer using a serial cable
or a USB cable.
Using a Serial Cable
The serial port on your ISDN TA is shown in the illustration of the
back panel above. It is labeled “RS-232.” You must provide the serial
cable.
If you are using a Macintosh, you will need a serial cable with one 25-
pin male end and one mini DIN eight-pin male end.
If you are using an IBM-compatible PC, look at the back of your
computer to determine what sort of serial cable you should use.
The serial port on the back of your computer will likely be labeled
“COM,” “SERIAL,” “RS-232,” or “10101.” Consult your computer’s
manual if you have trouble finding a serial port.
 If the serial port on your IBM-compatible computer has nine pins,
you will need a serial cable with one 25-pin male end and one
nine-pin female end.
 If the serial port on your IBM-compatible computer has 25 pins,
you will need a serial cable with one 25-pin male end and one 25-
pin female end.
Caution: Before connecting your ISDN TA, be sure that your
computer is turned off.

To install the cable:
1Insert the 25-pin male end of the serial cable into the RS-232 serial
port on the back of your ISDN TA, as shown below in Figure 2-3.
Then tighten the connector screws.
2Connect the other end of the cable to the serial port you found on
the back of your computer. Then tighten the connector screws.
If you are using a Macintosh, the port will be circular and labeled
.
Figure 2-3 Connecting the serial cable
Using a USB Cable
Your ISDN TA came with a USB cable. To connect your ISDN TA to
your computer using USB, your computer must use an operating
system that supports USB CDC modem devices, such as Windows 98
with Service Pack 1 or later.
The USB port on your computer is labeled “USB” or . It is
very narrow and rectangular.
To verify that you are using Windows 98 with Service Pack 1 and that
USB is enabled:
1Click Windows Start, select Settings, and click Control Panel.
2Double-click the System icon.
3The “System Properties” screen appears.
Your Windows version and service pack version information are
listed under “System.”
4Click the Device Manager tab.

If “Universal serial bus controller” appears in the list of system
devices without any conflict or warning icons, then USB is
configured properly.
For further information on how to enable and configure your USB
port, consult your computer’s users manual or contact the
manufacturer.
To install the USB cable:
1Insert the six-sided end of the USB cable into the USB port on the
back of your ISDN TA, as shown in Figure 2-4.
2Insert the rectangular end of the cable into the port labeled “USB”
or on the back of your computer.
Figure 2-4 Connecting the USB cable
Connecting the ISDN Cable
Your ISDN TA comes with an RJ-45-to-RJ-11 ISDN cable.
Before you connect the cable, notice the difference between its two
ends. The RJ-45 end of the cable is larger than the RJ-11 end of the
cable.
To install the ISDN cable:
1Connect the RJ-45 end of the ISDN cable that came with your
ISDN TA to the ISDN port on the back of your ISDN TA, as
shown in Figure 2-5.
2Connect the RJ-11 end of the ISDN cable to the ISDN wall jack.

Caution: Never connect your ISDN TA to a standard analog
telephone jack or an external NT1 device.
Note: Your phone company may have installed an RJ-45 wall
outlet. The RJ-45-to-RJ-11 that came with your ISDN TA will
work with the RJ-11 end plugged into the wall outlet. However,
multiple phone lines are not supported through the ISDN interface.
Figure 2-5 Connecting the ISDN cable
Connecting Analog Equipment to Your ISDN TA
You can connect analog equipment (such as a touch-tone phone,
answering machine, or fax machine) to your ISDN TA and use them on
your ISDN line even while you are online.
Note: To find out how to set up supplementary services for these
analog devices (such as Call Waiting or Caller ID), see the chapter
“Voice Features.”
To install an analog device:
1Insert one end of a standard phone cable (RJ-11) into one of the
ports on the back of the ISDN TA labeled with the picture of a
telephone, as shown in Figure 2-6.
You must provide a standard phone cable (RJ-11) for each analog
device you want to install.
2Insert the other end of the phone cable into the appropriate jack on
the analog device, as shown in Figure 2-6.
3Repeat steps 1 and 2 to connect another analog device.
Note: Two phone lines are supported through the Analog Device
Ports.

Figure 2-6 Connecting Analog Equipment
Connecting the Power Cable
To install the power cable:
1Connect the power cable that came with your ISDN TA to the
power connector on your ISDN TA’s back panel, as shown in
Figure 2-7.
Note: Use only the power cable with adapter that came with your
ISDN TA.
2Connect the transformer end (the end with the adapter block) into a
surge protected standard wall outlet.
Figure 2-7 Connecting the Power Cable

INSTALLING SOFTWARE
FOR YOUR ISDN TA
After Connecting Your ISDN TA
After you install the hardware for your ISDN TA, turn your computer
on.
The software installation of your ISDN TA differs slightly, depending
upon your operating system. The sections below describe various
installations.
Note: To find out what version of Windows you are using, click
Windows Start, select Settings, and click Control Panel. Then click
the System icon. When the “System Properties” screen appears, click
the General tab. Your version is listed under “System.”
Windows 95 A
1When your computer starts up, it recognizes your ISDN TA, and
the “New Hardware Found” screen appears, as shown in Figure 3-
1.
Figure 3-1 “New Hardware Found” Windows 95 A
2Insert the Connections CD-ROM that came with your ISDN TA.
Then click Driver from disk provided by hardware
manufacturer.
3When the “Install From Disk” screen appears, click the drop-down
menu beneath “Copy manufacturer’s files from.”
Select D:\. Then click OK, as shown in Figure 3-2.
Note: If your CD-ROM drive uses a letter name other than “D,”
select that letter instead.

Figure 3-2 “Install From Disk” Windows 95 A
4Windows takes it from there, copying the necessary files to your
computer.
Windows 95 B
1When your computer starts up, it recognizes your ISDN TA, and
the “Update Device Driver Wizard” appears.
2Insert the Connections CD-ROM that came with your ISDN TA.
Click Next.
3Windows searches your 3.5-inch floppy drive, then your CD-
ROM drive for the proper files. When it finds them, they are
copied to your computer.
4Click Finish.
Windows 98
Note: If you are using USB, your ISDN TA may install transparently,
without running the “Add New Hardware Wizard” described below.
1When your computer starts up, it recognizes your ISDN TA, and
the “Add New Hardware Wizard” appears.
Click Next.
2When the next screen appears, shown in Figure 3-3, select Search
for the best driver for your device, then click Next.

Figure 3-3 Search for best driver
3The screen shown in Figure 3-4 appears. Click the boxes next to
CD-ROM drive and Specify a location to select them.
Insert the Connections CD that came with your ISDN TA.
Then click the drop-down menu below “Specify a location” and
select the letter name of your CD-ROM drive. Click Next.
Figure 3-4 Select location to search
4A screen appears telling you that the drivers have been found.
Click Next.
When the screen telling you that the drivers have been installed
appears, click Finish.
Windows NT

1Before you log on, insert the Connections CD that came with your
ISDN TA.
2Once you log on and Windows finishes starting up, click Windows
Start, select Settings, and click Control Panel.
Then double-click the Modem icon.
3If you have other modems or ISDN devices installed on your
computer, the “Modems Properties” screen appears. Click the Add
button. When the “Install New Modems” screen appears, click
Next
If you do not have other modems or ISDN devices installed on
your computer, the “Install New Modems” screen appears. Click
Next.
4Windows detects your ISDN TA but calls it a “Standard Modem.”
Click the Change button.
5The screen shown in Figure 3-5 appears. Click the Have Disk
button.
Figure 3-5 “Have Disk” screen
6When the screen shown in Figure 3-6 appears, select 3Com U. S.
Robotics ISDN TA EXT by clicking it. Then click OK.

Figure 3-6 Select your ISDN TA
7The first “Install New Modem” screen reappears. Click Next.
8Windows copies the files for your ISDN TA to your computer.
Fill out the information requested on the “Location Information”
screen, shown in Figure 3-7.
Click Next.
Then click Finish.
Figure 3-7 “Location Information” screen
Installing ControlCenter
Once the drivers for your ISDN TA are installed, you can install the
ControlCenter software.

ControlCenter makes using your ISDN TA easier than ever by allowing
you to configure many of its settings with a point-and-click graphical
interface.
1Close any open applications.
2Insert the Connections CD. If Connections is already in your CD-
ROM drive, remove it and reinsert it.
3The Connections installer starts automatically.
If it does not start, click Windows Start, then Run. When the
“Run” screen appears, type D:\setup.exe.
If it does not start and you are using a Macintosh, double-click the
icon for your CD-ROM drive on your desktop.
Follow the onscreen instructions to install the Connections CD.
4Once the Connections CD is installed, the ControlCenter installer
starts automatically. When the ControlCenter “Welcome” screen
appears, as shown in Figure 3-8, click Next.
Note: If you want to reinstall ControlCenter after this initial setup,
insert the Connections CD. When the introductory Connections
screen appears, click Software. Then click Productivity &
Utilities, followed by the ControlCenter icon. Then follow the
onscreen instructions to install ControlCenter.
Figure 3-8 ControlCenter “Welcome” screen
5The bottom of the next screen shows you the folder that the
ControlCenter software will be installed to, as in Figure 3-9.

To change where ControlCenter will be saved, click Browse and
select a new location. Be sure to remember where the software is
saved.
To accept the default location, click Next.
Figure 3-9 “Choose Destination Location” screen
6Once you select where to save the files, you are asked where you
want the program icons placed. This decision determines where
you will be able to find the program in the Windows Start menu.
If you click Next, the icons are placed in a default folder
To choose a different location, click a folder in the “Existing
Folders” list to select it, then click Next.
7When the “Setup Complete” screen appears, you are given the
option of viewing the ControlCenter Readme file and opening the
ControlCenter software.
Select the options you want by clicking the box next to the items.
Note: An option is selected if a check mark appears in the box next
to it.
Once you have made your selections, click Finish.

BASIC CONFIGURATION
Starting ControlCenter for the First Time
When you start the ControlCenter software that came with your ISDN
TA, it searches your system for products that it can configure. The
products it finds are listed on the left side of ControlCenter’s
introductory screen.
To configure your ISDN TA, click its icon.
If you are starting ControlCenter for the first time, the software
attempts to automatically discern the Service Profile Identifiers (SPIDs)
for your ISDN line using AutoSPID.
The SPIDs are strings of characters that identify the capabilities of your
ISDN TA and line.
AutoSPID also attempts to discern the telephone numbers for your line.
These numbers may also be known as Directory Numbers or DNs.
A person trying to connect to your ISDN TA to transfer data or make a
call to an analog device on your ISDN line dials a one of these
telephone numbers.
 If AutoSPID is successful, you are ready to make a connection
using your ISDN TA. No other configuration may be necessary.
 If AutoSPID is unsuccessful (It only works with certain types of
telephone company equipment.), ControlCenter's SPID Wizard,
shown in Figure 4-1, appears asking you to enter your area code
and the telephone numbers for your ISDN line.
The telephone numbers are provided by your telephone company
when you order your ISDN service.
Once you enter the appropriate area code and telephone number
information, click Next. The SPID Wizard then uses the
information provided to discern your SPIDs.
The SPID Wizard checks that you are using the appropriate
SPIDs and telephone numbers every time you open
ControlCenter. It appears, as it did in this case, when it detects
incorrect SPID or telephone number information.
You can also force the SPID Wizard to run at any time by
clicking the SPID Wizard icon on the left side of the
ControlCenter screen.
At this point, you are ready to make a connection using your
ISDN TA. No other configuration may be necessary. Go to the
chapter “Getting Online with Your ISDN TA” to set up a
connection.