Us robotics ISDN Terminal Adapter User Manual
ABLE OF CONTENTS
T
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 T A 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 Setting s
Using Dynamic B andwidth Allocation
Using Always On/Dynamic ISD N
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 Manuall y
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 Telep hone Company
Appendix B – AT Commands and S Registers
Using AT Commands
Basic AT Commands
AT& Commands
AT* Co mmands
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
NTRODUCTION
I
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-wa y conference
calling options, and message wai ting 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 s up plied 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
NSTALLING YOUR
I
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 Devi ce
Ports.
This LED is off when the ISDN TA is operating normall y.
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 be ing 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 illustratio n 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 25pin 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 likel y be labeled
“COM,” “SERIAL,” “RS-232,” or “10101.” Consult your computer’s
manual if you have trouble finding a seri al 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 fe male 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 25pin female end.
Caution: Before connecting your ISDN TA, b e sure that your
computer is turned off.
To install the cable:
1
Insert 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.
2
Connect 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
very narrow and rectangular.
To verify that you are using Windows 98 with Service Pack 1 and that
USB is enabled:
1
Click Windows Start, select Settings, and click Control Panel.
2
Double-click the System icon.
3
The “System Properties” screen appears.
Your Windows version and service pack version i nformation are
listed under “System.”
4
Click the Device Manager tab.
. It is
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:
1
Insert 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.
2
Insert 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:
1
Connect 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.
2
Connect 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:
1
Insert 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.
2
Insert the other end of the phone cable into the appropriate jack on
the analog device, as shown in Figure 2-6.
3
Repeat 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:
1
Connect 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.
2
Connect the transformer end (the end with the adapter block) into a
surge protected standard wall outlet.
Figure 2-7 Connecting the Power Cable
NSTALLING SOFTWARE
I
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 Wind ows 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
1
When 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
2
Insert the Connections CD-ROM that came with your ISDN TA.
Then click Driver from disk provided by hardware
manufacturer.
3
When 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
4
Windows takes it from there, copying the necessary files to your
computer.
Windows 95 B
1
When your computer starts up, it recognizes your ISDN TA, and
the “Update Device Driver Wizard” appears.
2
Insert the Connections CD-ROM that came with your ISDN TA.
Click Next.
3
Windows searches your 3.5-inch floppy drive, then your CDROM drive for the proper files. When it finds them, they are
copied to your computer.
4
Click Finish.
Windows 98
Note: If you are using USB, your ISDN TA may install transparently,
without running the “Add New Hardware Wizard” described below.
1
When your computer starts up, it recognizes your ISDN TA, and
the “Add New Hardware Wizard” appears.
Click Next.
2
When 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
3
The 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
4
A screen appears telling you that the drivers h ave been found.
Click Next.
When the screen telling you that the drivers have been installed
appears, click Finish.
Windows NT
1
Before you lo g on, insert the Connections CD that came with your
ISDN TA.
2
Once you log on and Windows finishes starting up, click Windo ws
Start, select Settings, and click Control Panel.
Then double-click the Modem icon.
3
If 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.
4
Windows detects your ISDN TA but calls it a “Standard Modem.”
Click the Change button.
5
The screen shown in Figure 3-5 appears. Click the Have Disk
button.
Figure 3-5 “Have Disk” screen
6
When 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 you r ISDN TA
7
The first “Install New Modem” screen reappears. Click Ne xt.
8
Windows copies the files for your ISDN TA to your computer.
Fill out the information requested o n 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 settin gs with a point-and-click graphical
interface.
1
Close any open applications.
2
Insert the Connections CD. If Connections is already in your CD-
ROM drive, remove it and reinsert it.
3
The Connections installer starts automatically.
If it does not start, click Windo ws 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.
4
Once 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
5
The 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
6
Once 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.
7
When the “Setup Complete” screen appears, you are given the
option of viewing the ControlCe nte r 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.
ASIC CONFIGURATION
B
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 li ne using AutoSP ID.
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 SP IDs.
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.
Figure 4-1 ControlCent er SPID Wizard
Basic Data and Voice
Settings
After you set the SPIDs and telephone numbers as described above, the
basic voice and data settings for your ISDN TA’s can be adjusted.
Note: The settings described in this section have established defaults
that appear in ControlCenter. Changing these defaults could alter your
ISDN TA’s performance.
Changing the Protocol
used for Outgoing Calls
To change the protocol your ISDN TA uses to make outgoing calls:
1
Click the Configuration Manager icon on the left side of the
ControlCenter screen. The screen shown in Figure 4-2 appears.
Figure 4-2 ControlCenter port setting configuration screen
2
To change the basic data settings, click the Outgoing Calls drop-
down menu in the “Data Port” section. Options in this menu
include:
Internet Access (PPP) Dynamic Bandwidth (DBA) – This
is the default setting. It allows your ISDN TA to use b oth Bchannels to achieve speeds of up to 128 Kbps.
It also saves you money by automatically dropping the
second B-channel whenever it is not need based on data flow.
See the “Advanced Configuration” chapter for more
information on c onfiguring Dynamic Bandwidth Allocation.
Internet Access (PPP) 64 Kbps – Using this setting, your
ISDN TA transmits data on only one B-channel.
Internet Access (PPP) 128 Kbps – Using this setting, your
ISDN TA transmits data on both B-channels. It does not use
Dynamic Bandwidth Allocatio n, but you can use analog
devices connected to your ISDN TA.
Note: The second B-channel stays connected at all times.
V.120 Rate Adaption – V.120 is a standard for pa ssing
asynchronous data on the IS DN B-channels , which are
inherently synchronous. It is typically used when your
computer will be communicating with another computer
rather than with an Internet Service Provider.
Asynchronous 128K – This is a 3Com U. S. Robotics
proprietary channel aggregation method for achieving speeds
of up to 128 Kbps.
Asynchronous 128 Kbps does not require PPP software or a
network protocol on your computer.
However, it does require that the device you are connecting
to use the same protocol.
Advanced Asynchronous 128K – This is a 3Com U. S.
Robotics proprietary channel aggregation method for
achieving speeds of up to 128 Kbps.
Using Dynamic Ba nd wid th Allo c atio n, Ad va nc ed
Asynchronous 128K can manage the use of your ISDN line’s
B-channels, dropping a channel whenever it is not needed
based on data flow.
Advanced Asynchronous 128K does not require PPP
software or a network protocol on your computer. However,
it does require that the device you are connecting to use the
same protocol.
Setting Dynamic Voice Override
Dynamic Voice Override manages calls to analog devices on your
ISDN line when your data connection is active.
For outgoing calls, Dynamic Voice Override drops the traffic on
one of the engaged B-channels any time you initiate a call using
an analog device connected to your ISDN TA.
The data transmission continues on the other B-channel, and you
can place your analog call.
When you hang up, the B-channel that was dropped automatically
resumes the data transmission along with the other B-channel.
Note: Using AO/DI, you can use devices on both your Analog
Device Ports at the same time and still maintain your data
transmission. For more information on AO/DI, see the “Advanced
Configuration” chapter.
For incoming calls, Dynamic Voice Override causes the phone or
fax machine connected to your ISDN TA to ring.
If you pick up the phone or if the fax machine accepts the call, the
call is connected. The data transmission is dropped on one Bchannel but continues on the other.
Note: Dynamic Voice Override for incoming calls must be
supported by your ISDN line. For more information on ISDN
service, see the chapter “Ordering ISDN Service.”
To adjust the Dynamic Voice Override setting:
1
Click the Configuration Manager icon on the left side of the
ControlCenter screen.
2
Then click the Dynamic Voice Override drop-down menu in the
“Voice Port” section.
3
Select Outgoing Calls only, Incoming Calls only, Incoming
and Outgoing Calls, or No Dynamic Voice Override.
Setting the B-Channel Rate
Your ISDN B-channels are capable of either 56 Kbps or 64 Kbps,
depending upon the way your call is routed by the telephone company.
To set your line speed:
1
Click the Configuration Manager icon on the left side of the
ControlCenter screen.
2
In the “Data Port” section, click 56K or 64K.
Assigning Phone Numbers
for the Analog Device Ports
The Analog Device Ports on the back of your ISDN TA can be set to
receive calls to either of your ISDN line’s telephone numbers. The
device will ring whenever the telephone number assigned to the port
that it is plugged into is dialed.
You can also disable incoming calls to the Analog Device Ports.
To adjust your Analog Device Ports’ settings:
1
Click the Configuration Manager icon on the left side of the
ControlCenter screen.
2
Find “Telephone Number Assignment” in the “Voice Port”
section. The “Port #1” and “Port #2” drop-down menus represent
the Analog Device Ports on the back of your ISDN TA.
3
By default, “Port #1” and “Port #2” each already have a telephone
numbers assigned.
To change this telephone number, click the drop-down menu
of the port and click the telephone number that you want
assigned to that port.
To disable incoming calls to the Analog Device Port, click
the drop-down menu of the port, then click Disable
Incoming Calls.
DVANCED CONFIGURATION
A
Changing the Data Protocols Used by Your
ISDN TA
To change the data protocols used by your ISDN TA, open
ControlCenter.
Click the Configuration Manager icon, followed by the Advanced
Configuration button. Then click t he Data tab.
ControlCenter’s “Data” tab, shown in Figure 5-1, has two sections,
“Incoming Call s” and “Ou tgo in g Call s. ”
Reme mber: The settings in this section affect only data calls. They do
not affect calls to your ISDN TA’s Analog Device Ports.
Figure 5-1 ControlCenter “Data” tab
Incoming Data Calls
To set the options in the “Incomin g Calls” section:
1
Click the Incoming Call Protocol drop-down menu. Then click
one of the options to select what sort of calls your ISDN line will
accept.
Note: When set to a protocol, your ISDN TA will accept only
calls made using that protocol.
Options include:
Automatic Protocol Detect – This is the default setting.
Using this setting, your ISDN TA discerns the protocol being
used by an incoming data transmission and adapts to that
protocol.
V.120 Rate Adaption – V.120 is a standard for pa ssing
asynchronous data on the IS DN B-channels , which are
inherently synchronous. It is typically used when your
computer communicates with another computer rather than
with an Internet Service Provider.
Internet Access (PPP) –Using this setting, your ISDN TA
will accept calls that use PPP.
Asynchronous 128K – This is a 3Com U. S. Robotics
proprietary channel aggregation method for achieving speeds
of up to 128 Kbps.
Asynchronous 128K does not require PPP software or a
network protocol on your computer.
Advanced Asynchronous 128K – This is a 3Com U. S.
Robotics proprietary channel aggregation method for
achieving speeds of up to 128 Kbps.
Using Dynamic Ba nd wid th Allo c atio n, Ad va nc ed
Asynchronous 128K can manage the use of your ISDN line’s
B-channels, dropping a channel whenever it is not needed
based on data flow.
2
Click the Telephone Number Assignment drop-down menu to
select which of your ISDN line’s telep ho ne numbers will be
answered as data calls.
To prevent your ISDN TA from accepting any incoming calls,
click the Telephone Number Assignment drop-down menu, then
click No Incoming Calls.
Outgoing Data Calls
The “Outgoing Calls” section allows you to set what protocol your
ISDN TA uses to make data calls, at what rate these calls are made, and
whether or not you want to use the Data Over Voice (DOV) option.
To set these options:
1
To turn on DOV, click Enable DOV. A check mark appears in
the box next to the item when it is selected.
DOV allows you to place data calls using a voice call type. A
DOV connection will achieve a maximum rate of 56 Kbps per Bchannel, but it saves you any extra charges associated with a
digital connection.
Note: DOV must be supported on the device you are connecting
to.
It also requires that the ISDN TA’s bearer capability be set to 3.1
KHz Audio. For more information on bearer capability and 3.1
KHz Audio, see the “Voice Features” chapter.
2
To select the protocol that your ISDN TA uses to make data calls,
click the Outgoing Call Protocol.
For more information on the options in this menu, see the
“Incoming Data Calls” sectio n above.
3
Set the rate at which data calls are made by clicking the Bchannel Rate drop-down menu.
To set the rate to the maximum rate available on your B-channels,
click Automatic Rate Detect.
To force the data call to be made at 56 Kbps, click Fix 56Kbps
Rate.
To force the call to be made at 64 Kbps, click Fix 64Kbps Rate.
Adjusting Your
ISDN TA’s PPP Settings
To adjust your PPP settings:
1
Open ControlCenter.
2
Click the Configuration Manager icon.
3
Then click the Advanced Configuration button. Be sure that
“Internet Access (PPP) is selected in the “Outgoing Call Protoc ol”
drop-down menu on this screen.
4
Click the PPP Settings button. The “PPP Settings” screen, shown
in Figure 5-2, appears.
Figure 5-2 ControlCenter “PPP Settings” screen
PPP Mode
On the “PPP Settings” screen, click the PPP Mode drop-down menu to
select what type of PPP connection your ISDN TA makes.
Options include:
Transparent Async/Sync PPP – Automatically converts the
asynchronous PPP from your host computer into synchronous
PPP that is transmitted over the ISDN line.
If this option is selected, your ISDN TA does not attempt to
compress the data being transferred, and only one B-channel is
used.
Single Link PPP – Makes a PPP connection on one of your ISDN
line’s B-channels and compresses the data being transferred if
necessary.
MultiLink PPP – Makes a PPP connection and leaves both of
your ISDN line’s B-channels turned on at all times. MultiLink
PPP also compresses the data being transferred if necessary.
MultiLink PPP with Dynamic Bandwidth Allocation – Makes
a PPP connection on both of your ISDN line’s B-channels using
Dynamic Bandwidth Allocation and compresses the data being
transferred if necessary.
For more information on Dynamic Bandwidth Allocation, see the
next section in t his chapter, “Using Dynamic Bandwidth
Allocation.”
Note: If you will be using AO/DI, PPP must be set to “MultiLink
PPP with Dynamic Bandwidth Allocation.”
Compression Mode
Click the Compression Mode drop-down menu to select how your
ISDN TA attempts to compress the data that is being transferred.
Options include:
Pass Through Compression – Your ISDN T A never attempts to
compress the data that is being transferred. Compression is left to
your computer and the device it is connected to.
Automatic Compression – While negotiating a connection, your
ISDN TA checks the compression methods being used by your
computer and the device it is connecting to. It then compresses the
data if necessary.
Turbo PPP Compression – Your ISDN TA always attempts to
compress the data being transferred.
Endpoint Discriminator
The “Endpoint Discriminator” drop-down menu is set to
“Automatically Assigned” by default.
Do not change this setting unless specifically told to do so by the
person who administrates the device or network you are connecting to.
BACP/BAP
The Bandwidth Allocation Control Protocol (BACP) and Bandwidth
Allocation Protocol (BAP) are used to negotiate bandwidth allocation
with the server your ISDN TA is connected to.
By default, this option is enabled. (A check mark appears in the box
next to “Enab l e BACP/BAP.”)
If BACP/BAP is not needed during a given connection, it will not be
used, even if it is enabled.
There are two items listed in this section:
Local Dial-Out Prefix – Any prefix that must precede the phone
number returned by the server during BACP/BAP negotiation
should be typed in this text box. (For example, if your ISDN TA
must dial nine to get an outside line.)
Long Distance Dial-Out Prefix – Any long distance prefix that
must precede the phone number returned by the server during
BACP/BAP negotiation s ho uld be typed in this text box.
Using Dynamic Bandwidth Allocation
Dynamic Bandwidth Allocation (DB A) monitors the data traffic on the
B-channels of your ISDN line. When traffic is light, DBA turns off one
of the B-channels. When traffic is heavy, it turns that B-channel on
again.
In this way, DBA helps ensure that your ISDN connection is being
used to its fullest potential. At the same time, it prevents the
unnecessary cost of keeping two B-channels turned on even when data
traffic is light enough to be handled by one.
To adjust your D ynamic Bandwidth Allocation settings:
1
Open ControlCenter. Click the Configuration Manager icon.
2
Click the Advanced Configuration button.
3
Click the PPP Settings button.
In the “PPP Mode” drop-down menu, be sure that MultiLink
PPP with Dynamic Bandwidth Allocation is selected.
4
Click the Dynamic Bandwidth button.
5
Your ISDN line’s two B-channels are represented on the “Bchannel Threshold Settings” screen, which is shown in Figure 5-3.
Figure 5-3 ControlCenter “B-cha nnel Threshold Settings” screen
The settings that can be adjusted on this screen incl ude:
Sample Time to Add B-channel – Use the slide bar to adjust
how often, in seconds, the ot her channel is checked to determine
if this channel needs to be turned on.
Sample Time to Drop B-channel – Use the slide bar to adjust
how often, in seconds, this channel is checked to determine if it
needs to be turned off.
Threshold to Add B-channel – Use the slide bar to adjust what
percentage of the other channel must be in use before this channel
is turned on.
Threshold to Drop B-channel – Use the slide bar to adjust what
percentage of this channel must be in use before it is turned off.
Note: The settings for the first B-channel can only be adjusted if
AO/DI is enabled. For more information on AO/DI, see the ne xt
section.
Using Always On/Dynamic ISDN
Always On/Dynamic ISDN(AO/DI) is a dial-up service designed to
optimize the use of your ISDN line by sending and receiving data on
the D-channel.
The D-channel is the signaling channel for an ISDN line. It carries
signaling messages between your ISDN TA and the public switch.
Basically, it tells the telephone company equipment to establish and
tear down B-channel circuit switched connections.
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