Us robotics ISDN Terminal Adapter User Manual

ABLE 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 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

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

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:

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.

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:

Click Windows Start, select Settings, and click Control Panel.

Double-click the System icon.

The “System Properties” screen appears.

Your Windows version and service pack version i nformation are listed under “System.”

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:

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.

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:

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.

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:

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.

Insert the other end of the phone cable into the appropriate jack on the analog device, as shown in Figure 2-6.

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:

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.

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

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-

Figure 3-1 “New Hardware Found” Windows 95 A

Insert the Connections CD-ROM that came with your ISDN TA. Then click Driver from disk provided by hardware manufacturer.

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

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.

Insert the Connections CD-ROM that came with your ISDN TA. Click Next.

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.

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.

When your computer starts up, it recognizes your ISDN TA, and the “Add New Hardware Wizard” appears.

Click Next.

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

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

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

Before you lo g on, insert the Connections CD that came with your ISDN TA.

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.

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

If you do not have other modems or ISDN devices installed on your computer, the “Install New Modems” screen appears. Click Next.

Windows detects your ISDN TA but calls it a “Standard Modem.” Click the Change button.

The screen shown in Figure 3-5 appears. Click the Have Disk button.

Figure 3-5 “Have Disk” screen

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

The first “Install New Modem” screen reappears. Click Ne xt.

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.

Close any open applications.

Insert the Connections CD. If Connections is already in your CD- ROM drive, remove it and reinsert it.

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.

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

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

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.

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

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:

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

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:

Click the Configuration Manager icon on the left side of the ControlCenter screen.

Then click the Dynamic Voice Override drop-down menu in the “Voice Port” section.

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:

Click the Configuration Manager icon on the left side of the ControlCenter screen.

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:

Click the Configuration Manager icon on the left side of the ControlCenter screen.

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.

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

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:

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.

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:

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.

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.

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:

Open ControlCenter.

Click the Configuration Manager icon.

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.

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:

Open ControlCenter. Click the Configuration Manager icon.

Click the Advanced Configuration button.

Click the PPP Settings button.

In the “PPP Mode” drop-down menu, be sure that MultiLink PPP with Dynamic Bandwidth Allocation is selected.

Click the Dynamic Bandwidth button.

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.

These signaling messages typically do not require all of the Dchannel’s bandwidth. By sending and receiving data on the D-channel, your ISDN TA can take advantage of its extra capacity.

AO/DI uses a protocol known as X.25 over the D-channel to conduct low bandwidth operations, such as checking for new messages by your email program. To make an AO/DI call, an X.25 connectio n is established between your ISDN TA and your Internet Service Provider over the D-channel. Data from your computer is sent over this connection.

When there is too much data to be sent or received over the D-channel, one or more ISDN B-channels are engaged to provide data speeds up to 128 Kbps (or higher with compression). Dynamic Bandwidth Allocation is used to decide when to engage and disengage the Bchannels. Phone numbers for the B-channels may be provided by the user. Optionall y, Bandwidth Allocation Control Protoco l (BACP) and Bandwidth Allocation Pro tocol (BAP) can be used to get the B-chan nel phone numbers and negotiate bandwidth allocation.

During an AO/DI connection, both Analog Device Ports can be used. Your ISDN TA can also accept one AO/DI call.

Benefits of AO/DI include:

 Since the D-channel is always available, it can provide Always

On connectivity. This is ideal for applications such as email, push technologies (such as Pointcast™ ), and other applications that require a permanent network connection.

 Because B-channels are brought up only when they are needed to

boost data throughput, B-channel connec tion costs are significantly reduced.

 Both Analog Device Ports can be used, even while there is an

active data connection.

Setting Up AO/DI on Your ISDN TA

Note: AO/DI must be supported by your ISDN line and your Internet Service Provider. Much of the information needed to set up your ISDN TA for AO/DI is provided by your phone company. For more information, see the chapter “Ordering ISDN Service.”

Also note that AO/DI requires that you use MultiLink PPP with Dynamic Bandwidth Allocation.

To set up AO/DI:

Open ControlCenter and click the Configuration Manager icon.

Click the Advanced Configuration button, followed by the ISDN Line tab.

At the bottom of the “ISDN Line” screen, click Enable AO/DI (Always On/Dynamic ISDN) to select it. A check mark appears in

the box next to the item when it is selected.

Click the AO/DI Settings button. The screen shown in Figure 5-4 appears.

Figure 5-4 AO/DI settings screen

When you order AO/DI service, you will have to select a long distance packet (X.25) carrier for your D-channel.

You may be given a long distance carrier code for this service. If you need to set it, type the four-digit n umber in the “Long Distance Packet Carrier” text box in the “Network Settings” section.

Note: This code may be set automatically by the telephone company switch that your ISDN line uses. Also, you will not need to enter any code if your service provider or other online service is in your calling area. For more information, talk to your phone company’s ISDN re pr e senta t ive wh e n you or de r your line.

When you order your ISDN li ne wi th AO/DI service, you are give n a third telephone number that is specifically for your D-channel’s X.25 connection.

Type that number, provided by your phone company, in the “Packet Telephone Number (DN)” text box.

The Terminal Endpoint Identifier (TEI) for your D-channel’s X.25 connection is set to 21 by default. Do not change this number, unless you are instructed to do so by your phone company or a 3Com Customer Service representative.

For information on dialing for an AO/DI connection, see the chapter

“Dialing, Storing Numbers, and Logging Calls.”

Managing AO/DI Operations

A check box in the “AO/DI Operations” section enables or disables the Request Reverse Charge operation.

Request Reverse Charge allows you to request that the charge for an X.25 connection on your ISDN TA’s D-channel be paid by the recipient of the call.

Note: This service must be supported by the device or service provider that you are connecting to.

To enable this feature, select Enable Request Reverse Charge. A check mark appears in the box next to the item when it is enabled.

In the “AO/DI Operations” section, you can also set the number of Bchannels be ing managed by AO/DI.

Click the Maximum A O/DI Bandwidth drop-down menu.

 If you want AO/DI to have control over o nly the D-channel of

your ISDN line, click D-channel Only.

 If you want AO/DI to be ab le to engage one of your B-chan nels

when necessary, click D-channel + 1 B-channel.

 If you want AO/DI to be ab le to engage both B-channels when

necessary, click D-channel + 2 B-channels.

Using Asynchronous 128K and Advanced Asynchronous 128K

Asynchronous 128K data protocol mode bonds your ISDN line’s two B-channels together. It is a 3Com proprietary channel aggregation method for achieving speeds up to 128 Kbps.

Asynchronous 128K is similar to hardware B-channel BONDING, but it provides more features and flexibility.

During a data transmission, you can use one of the Analog Device Ports on your ISDN TA. When an analog device is used, one of the Bchannels is removed from the Asynchronous 128K connection and carries the call for the Analog Device Port. After Analog Device Port’s call is dropped, the B-channel is added back to the Asynchronous 128K connection.

It assumes that error correction, if required, will be handled on an upper layer. Data is delivered to its destination with minimum delay.

Advanced Asynchronous 128K

Advanced Asynchronous 128K has the same basic functionality as Asynchronous 128K. Like Asynchronous 128K, it is also a 3Com proprietary channel aggregation method.

In this mode, your ISDN TA may compress data sent by the host, which is then decompressed before it reaches its destination. This compression allows more data to be sent over your ISDN line’s Bchannels (at rates higher than 128 Kbps).

When Dynamic Bandwidth Allocation is i n use. Advanced Asynchronous 128K only uses one B-channel at the beginning of a connection. When there is enough d a ta being transmitted, the second B channel will be brought up without user interve ntion. DBA de cides when more c hannels are needed. In this way, DBA can help you save money.

During a data transmission, you can use one of the Analog Device Ports on your ISDN TA. When an analog device is used, one of the Bchannels carries the call for the Analog Device Port. After Analog Device Port’s call is dropped, the B-channel is added back to the Advanced Asynchronous 128K connection.

Advanced Asynchronous 128K can also support an always on connection over D-channel if you are using AO/DI. A call is set up on the D-channel first. When there is more data to transfer than can be sent on this channel, one or both of your ISDN line’s B-channels are brought up to provide data speeds up to 128 Kps (or higher with compression).

Once the data transfer is complete, the connection over the B-channel is dropped, and you remain connected over the D-channel. All of this happens automatically without user intervention. Because B-channels are brought up only when needed to boost data throughput, B-channel connection costs can be reduced significantly.

During an AO/DI connection, you can use b oth B-chan nels for analog connections and keep the data transmission active on the D-channel. Advanced Asynchronous 128K is ideally suited for using your ISDN TA to connect to maintain a constant connection to a backbone network.

Setting Up Asynchronous 128K

To use Asynchronous 128K:

Open ControlCenter and click the Configuration Manager icon.

Click the Advanced Configuration button.

To set the protocol for incoming calls, click the Incoming Call Protocol drop-down menu. Then click Asynchronous 128K.

To set the protocol for outgoing cal ls, click the Outgoing Call Protocol drop-down menu. Then click Asynchronous 128K.

Setting Up Advanced Asynchronous 128K

Advanced Asynchronous 128K uses PPP and Dynamic Bandwidth Allocation to control the number of channels to used, when those channels are brought up, and which compression method is used.

To change PPP and DBA settings see section on “Adjusting Your ISDN TA’s PPP Settings” and “Using Dynamic Bandwidth Allocatio n” sections of this chapter.

To use Advanced Asynchronous 128K:

Open ControlCenter and click the Configuration Manager icon.

Click the Advanced Configuration button.

To set the protocol for incoming calls, click the Incoming Call Protocol drop-down menu. Then click Advanced Asynchronous 128K.

To set the protocol for outgoing calls, click the Outgoing Call Protocol drop-down menu. Then click Advanced Asynchronous 128K.

To create an always on connection AO/DI must be turned on.

For information on dialing for an AO/DI connection, see the chapter

“Dialing, Storing Numbers, and Logging Calls.”

Using Your ISDN TA on a Leased Line

A leased line is a constant, dedicated ISDN connection between you and an online service. It must be set up with your telephone company.

Leased lines are often used by small businesses scattered across multiple locations. They are also frequently used to connect employees to their corporate networks.

They can be set up with one or two B-channels. However, your ISDN TA will not support analog devices when using a leased line.

For more information about setting up a leased line, contact your telephone company.

Note: You cannot use the leased line mode described below to connect your ISDN TA to another device using a simple RJ-45 cable. You must use a leased line set up by your telephone company.

To use your ISDN TA on a leased line:

Open ControlCenter.

Click the Configuration Manager icon. Then click the Advanced Configuration button.

Click the ISDN Line tab.

The screen shown in Figure 5-5 appears. Click the Switch Protocol Type drop-down menu.

 If your leased line has only one B-channel, click Leased

Line 64 Kbps (1 B-channel).

 If your leased line has two B-channels, click Leased Line

128 Kbps (2 B-channels).

Figure 5-5 ControlCenter “ISDN Line” tab

Click the Terminal icon on the left side of the ControlCenter screen.

To connect to the device or service at the other end of your leased line, type ATD and press Enter.

Returning Your ISDN TA’s Settings to the Factory Defaults

Using ControlCenter, you can return your ISDN TA’s settings to several different default modes.

To reset your ISDN TA:

Open ControlCenter.

Click the Configuration Manager icon. Then click the Advanced Configuration button.

Click the Reset tab. The screen shown in Figure 5-6 appears.

Figure 5-6 ControlCenter “Reset” tab

Click the Factory Settings drop-down menu. From this menu, select the default mode that you want your ISDN TA to be set to.

Options include:

No Hardware Flow Control



Template – Resets your ISDN TA’s basic settings with flow control turned off. Note: Flow control must be used any time compressed data is being transmitted.

Hardware Flow Control Template – Resets your ISDN



TA’s basic settings with hardware flow control turned on.

 Software Flow Control Template – Resets your ISDN TA’s

basic settings with software flow control turned o n.

 Factory Default with ISDN Settings – Resets your ISDN

TA’s basic settings with hardware flow control turned on. This option also resets your ISDN protocol parameters but does not affect the SPIDs and telephone numbers that you set, the switch type, or the supplementary voice services settings.

 Factory Default without ISDN Settings – Resets your ISDN

TA’s basic settings with hardware flow control turned on. This option also resets all your ISDN l i ne parameters.

Note: You must run SPID Wizard after selecting this option, in order to r econfigure your ISDN TA to your ISDN line.

Once you have selected a setting, click the Reset Modem button.

Setting SPIDs, Telephone Numbers, and TEIs Manually

If both AutoSPID and the SPID Wizard fail to identify the SPIDs and telephone numbers for your ISDN line, these numbers can be entered manually.

Remember: The SPIDs and telephone numbers for your ISDN line should have been provided by your phone company when you ordered your ISDN service.

You also need to know the switch type being used by your ISDN line. If you do not ha ve this information, contact your phone company.

To enter your SPIDs and telephone numbers manually:

Open ControlCenter and Click the Configuration Manager icon on the left side of the ControlCenter screen.

Then click the Advanced Configuration button, follo wed by the ISDN Line tab.

The screen shown in Figure 5-5 appears. Select the switch type provided by your phone company from the drop-down menu labeled “Switch Protocol Type.”

Enter your area code in the “Area Code” text box in the “Directory Numbers” section.

Then enter one of your telephone numbers in the “Telephone Number 1 (DN1)” text box. Enter your other telephone number in the “Telephone Number 2 (DN2)” text box.

Note: If you ordered a type of ISDN service not discussed in the chapter “Ordering ISDN Service,” you may have a different number of telephone numbers.

Enter the SPID for your first telephone number in the “For DN1” text box in the “Service Profile Identifier (SPID)” section.

Then enter the SPID for your second telephone number in the “For DN2” text box.

Also, be sure that Ena ble AutoSPID Mode is selected in the “Service Profile Identifier (SPID)” section. A check mark appears in the box next to an item when it is selected.

Setting Terminal Endpoint Identifiers

In some cases, the Terminal Endpoint Identifiers (TEI) for each telephone number must be set to a fixed number. A TEI is used by the telephone company switch to recognize requests coming from your ISDN TA.

The TEIs for your telephone numbers are provided by your phone company.

They are set on ControlCenter’s “ISDN Line” tab, just as your SPIDs and telephone numbers were.

 If you were not provided with specific TEIs, leave Automatic

Assignment set in the drop-down menus.

 If you were provided with specific Terminal Endpoint Identifiers

for your telephone numbers, select Fixed Assignment from the “TEI for Telephone Number 1 (DN1)” and “TEI for Telephone Number 2 (DN2)” menus in the “Terminal Endpoint Identifier (TEI)” section.

Then type the TEI for each telephone number in the text boxes next to TEI drop-down menus.

OICE FEATURES

Supported Voice Features

A variety of supplementary voice features are described below. They are for use by analog devices, such as a telephone or fax machine, operating on your ISDN line through your ISDN TA.

Note: These features require that you have the proper ISDN service established. For more information about your ISDN ser vice, see the chapter “Ordering ISDN Service.”

Call Waiting

Call Waiting beeps when a second voice call is incoming while you are on a voice call.

As with normal telephone call waiting, you can put the first call on hold briefly and answer the second call by pressing the switch hook or the “Flash” button on your telephone.

Call Forwarding

Call Forwarding allows you to route your calls to a different p hone number instead of your own.

When you order Call Forwarding, you are given three codes that typically involve dialing “*” and then a two-digit number.

These codes allow you to set the telephone number to which you want your calls forwarded, to turn the forwarding feature on, and to turn it off. They are established by your phone company.

Caller ID

Your ISDN TA is capable of generating the signal necessary for Caller ID. Thus, if you have Caller ID service established for your ISDN line, your Caller ID box or Caller ID telephone will display the telephone numbers that call you and the time that they call.

Message Waiting Indicator

If you have voice mail service for your phone line and you have messages waiting, the “Alert” LED on your ISDN TA will blink green, or the dial tone will stutter when you pick up the phone connected to your ISDN TA.

The method used to notify you of waiting messages depe nds upon what sort of equipme nt is used by your p hone company.

Three-way Call Conferencing Options

This feature allows you to talk to two other people at the same time.

To use it, dial the first person as you would normally. Once connected to that person, press the switch hook or the “Flash” button on your telephone. Then dial the second person as you would normally.

Once you are connected to the second person, press the switch hook or “Flash” button again. All three of you will now be on the line.

To drop the person most recently added to the call, press the switch hook or “Flash” button on your phone.

To transfer a call, simply hang up the phone while part of a three-way conference call. The two other people will be able to continue the cal l.

The three-way call conferencing options also allow you to make a

consultation call. In a consul ta tion call, you can put one person on hold and call a second person. You can then end your call with the

second person and return to your call with the first.

To make a consultation call, dial the first person as you would normally. Once the call is established, press the switch hook or the “Flash” button on your telephone. Then dial the second person. When you are finished with your call to the second person, hang up your phone. The phone rings im mediately after you hang it up. Pick up the phone, and your call to the first person is reestablished.

Enabling Voice Features in ControlCenter

To use these supplementary voice services on an analog phone connected to your ISDN TA, first remember that you must have the proper ISDN service. These features are only supported on if you use the National ISDN Ordering Codes to set up your ISDN service.

For more information on your ISDN service, see the chapter “Ordering

ISDN Service.”

These features must also be enabled on your ISDN TA using its ControlCenter software. To do so:

Open ControlCenter.

From the list of devices that appears on the left of the ControlCenter screen, select your ISDN TA by clickin g it.

Click the Configuration Manager icon. When the screen changes, click the Advanced Configuration button.

Click the Voice tab.

The screen shown in Figure 6-1 appears. It lists a series of parameters for each of your ISDN TA’s Analog Device Ports.

If Caller ID is available on your ISDN line and you want to use it, click Enabled next to “Caller ID” in the proper Analog Device Port column.

Choose the Analog Device Port that you want to set up supplementary voice services on.

Make sure that Enable is select in the “Advanced Call Features” section. A check mark appears in the box when it is selected.

Figure 6-1 ControlCenter “Voice” tab

Click the Settings button next to “Enable.” The screen shown in Figure 6-2 appears.

The supplementary voice services for each Analog Device Port are listed.

Be sure that each voice service that you want to use is selected. A check mark appears in the box when it is selected.

Also be sure any code that activates the service is correct in the text box next to “Enable.”

Note: These codes are set to commonly used defaults, but particular codes are provided by your phone company.

Figure 6-2 ControlCenter “Advanced Voice Settings” screen

Advanced Voice Configuration

Several other features for the Analog Device Ports can be set from the Voice tab using ControlCenter’s a dvanced configuration tools.

To get to ControlCenter’s Voice tab:

Open ControlCenter.

From the list of devices that appears on the left of the ControlCenter screen, select your ISDN TA by clickin g it.

Click the Modify button. When the screen changes, click the Advanced Configuration button.

Click the Voice tab.

The screen shown in Figure 6-1 appears. It lists a series of parameters for each of your ISDN TA’s Analog Device Ports.

The following settings can be changed from this screen:

 Telephone Number Assignment – Use the drop-down menu

under each Analog Device Port heading to set the telephone number for that port.

You can also disable incoming calls to the port by selecting Disable Incoming Calls.

 Caller ID – See the “Enabling Voice Features in

ControlCenter” section of this chapter for information about this setting.

Bearer Capability – Choose Speech in this drop-down



menu if a standard telephone will be using the Analog Device Port.

Choose 3.1 KHz Audio for a higher-quality analog connection through the port.

You may want to use 3.1 KH z Audio if a fax machine or analog modem will be using the Analo g Device Port.

Receive Volume – Use this slide bar to set the volume of



incoming audio on the Analog Device Port (for example, the voice coming over your telephone).

 Transmit Volume – Use this slide bar to set the vo lume of

outgoing audio on the Analog Device Port (for example, your voice being sent from the telephone).

 Advanced Call Features – See the “Enabling Voice

Features in ControlCenter” section of this chapter for information about this setting.

 Dynamic Voice Override – Dynamic Voice Override

manages calls to analog devices on your ISDN line.

For more information on this feature, see the “Basic

Configuration” chapter.

ETTING ONLINE WITH YOUR

ISDN TA

Windows 95 or 98

Before you can connect your ISDN TA to the Internet or to another online service ( such as your company’s network), you must be sure that Windows Dial-Up Networking and Dial-up TCP/IP support are installed on your computer.

To make a connection, you must also configure Dial-Up Networking for your ISDN TA.

Installing Dial-Up Networking

To install Dial-Up Networking:

Click Windows Start, select Settings, and click Control Panel.

Double-click the Network icon. The “Network” screen, shown in Figure 7-1 appears.

 If “Dial-Up Adapter” appears in the list of network

components, go to the next section of this chapter, “Installing Dial-Up TCP/IP Support.”

 If “Dial-Up Adapter” does not appear in the list of network

components, go to step 3.

Figure 7-1 “Network” screen

If the Dial-Up Adapter is not listed, close the “Network” screen and return to the Control Panel.

Then double-click the Add/Remove Programs icon.

When the “Add/Remove Programs Properties” screen appears, click the Windows Setup tab, as shown in Figure 7-2.

Figure 7-2 “Add/R emove Programs Properties” screen

Double-click Communications in the list labeled “Components.”

When the “Communications” screen appears, as shown in Figure 7-3, click the box next to Dial-Up Networking to select it. A check mark appears in the box when it is selected.

Click OK. Then click OK again.

Follow the onscreen directions to install Dial-Up Net working.

Figure 7-3 “Communications” screen

Installing Dial-Up TCP/IP Support

To install Dial-Up TCP/IP support:

Click Windows Start, select Settings, and click Control Panel.

Double-click the Network icon. The “Network” screen, shown in Figure 7-1 appears.

 If “TCP/IP ->Dial-Up Adapter” appears in the list of network

components, go to the next section of this chapter, “Connecting to Your Service Provider.”

 If “TCP/IP -> Dial-Up Adapter” does not appear in the list of

network components, go to step 3.

If Dial-Up TCP/IP is not installed, click the Add button beneath the list of components on the “Network” screen.

When the screen shown in Figure 7-4 appears, double-click Protocol.

Figure 7-4 “Select Network Com ponent Type” screen

The “Select Network Protocol” screen appears, as shown in Figure 7-5.

From the list labeled “Manufacturers,” select Microsoft by clicking it.

Then select TCP/IP from the “Network Protoco ls” list.

Click OK.

Then follow the onscreen instructions to fi nish installing Dial-Up TCP/IP support.

Figure 7-5 “Select Network Protocol” screen

Connecting to Your Service Provider

To create an icon that allows you to connect to your Internet Service Provider and the Internet:

Click Start, select Programs and Accessories, and click Dial-Up Networking.

When the “Dial-Up Networking” screen appears, double-click the Make New Connection icon.

The screen shown in Figure 7-6 appears. Select 3Com U. S. Robotics ISDN TA EXT PnP fro m the “Select a modem” drop-

down menu.

Note: If you are using USB, select 3Com U. S. Robotics ISDN TA EXT USB instead.

If you want to give your connection a distinctive name, type it in the text box where “My Connection” appears. This name will appear with the connection’s icon when you use it in the future.

Then click Next.

Figure 7-6 “Make New Connection” screen

When the screen shown in Figure 7-7 appears, type the phone number provided by your Internet Service Provider or other online service.

Then click Next, followed by Finish.

Note: For more information about special dialing procedures for making an AO/DI or MultiLink PPP connection, see the chapter

“Dialing, Storing Phone Numbers, and Logging Calls.”

Figure 7-7 Dial-Up Networking telephone number screen

In the “Dial-Up Networking” screen where you first found the “Make New Connection” icon, a n icon for the connection you just created appears.

Right-click this icon. Then click Properties.

Click the Server Types tab.

When the screen shown in Figure 7-8 appears, click the boxes next to the following items to turn them off:

 Log on to network  NetBEUI

IPX/SPX Compatible



Note: The check marks in the boxes disappear when an item is turned off.

Then click OK.

To connect to your service provider, double-click your connection icon in the “Dial-Up Networking” screen.

Figure 7-8 Connection properties screen

Customizing TCP/IP Settings

Your service provider may give you custom TCP/IP settings for your ISDN TA. These settings may include an IP address or Domain Name Server (DNS).

Note: If your service provider does not give you these numbers, do not alter these settings. Simply double-click the icon you created on the “Dial-Up Networking” scree n to make your connection.

To change these settings:

Click Windows Start, select Programs and Accessories, and click Dial-Up Networking.

Right-click the icon you created for your connection. Then click Properties.

Click the Server Types tab.

Click the TCP/IP Settings b utton.

On the screen shown in Figure 7-9, set the IP address and the names server address.

 If your service provider gave you a specific IP address, click

Specify an IP address. Then type the address in the text box labeled “IP address.”

 If your service provider gave you a specific Domain Name

Server, click Specify name server address. Then type the address or addresses your service provider gave you in the appropriate text boxes.

Click OK to close the “TCP/IP Settings” screen. Then click OK to close the connection properties screen.

To open your connection, double-click the icon you created for it.

Figure 7-9 “TCP/IP Settings” screen

Windows NT 4.0

Before you can connect your ISDN TA to the Internet or to another online service ( such as your company’s network), you must be sure that TCP/IP is installed and set up Remote Access Service.

Installing TCP/IP

To install TCP/IP:

Click Windows Start, select Settings, and click Control Panel.

Double-click the Network icon. Then click the Protocol tab.

Look for “TCP/IP Protocol Adapter” in the list of installed protocols.

 If “TCP/IP Protocol Adapter” is listed, go to the next section,

“Setting Up Remote Access Service.”

 If “TCP/IP Protocol Adapter” is not listed, go to step 4.

Click the Add button.

Click TCP/IP protocol in the list of available protocols. Then click OK.

Setting Up Remote Access Service

To set up Remote Access Service (RAS):

Right-click the Network Neighborhood icon on your desktop. Then click Properties.

Click the Services tab.

Select Remote Access Service. Then click Properties.

Click the Add button.

Select the COM port your ISDN TA is installed on. Then click OK.

Select 3Com U. S. Robotics ISDN TA EXT.

Then click Configure.

Select the function of your ISDN TA and click OK.

Click Network.

Select the protocols required to dial in to the server you will b e connecting to.

Set “Encryption Settings” to Allow any authentification including clear text.

Click Continue to complete RAS setup.

Connecting to Your Service Provider

To create an icon that allows you to connect to your Internet Service Provider and the Internet:

Click Start, select Programs and Accessories, and click Dial-Up Networking.

Note: You may have to install Dial-Up Networking i f you have

never used it before. If necessary, you will be prompted to do so when you try to open Dial-Up Networking. Follow the onscreen

instructions to install it. You may ha ve to restart Windows NT, so be sure to close any open applications before installing Dial-Up Networking.

When the “Dial-Up Networking” screen appears, click New. Note: If you have never used Dial-Up Networking, the “New

Phonebook Entry Wizard” appears automatically.

When the “New Phonebook Entry Wizard” appears, give your connection a name by typing it in the “Name the new phonebook entry” text box. Then click Next.

Select the options that apply to your connection by clicking them. Then click Next.

Type the phone number provided by your Internet Service Provider or other online service. Then click Next.

Note: For more information about special dialing procedures for making an AO/DI or MultiLink PPP connection, see the chapter

“Dialing, Storing Phone Numbers, and Logging Calls.”

Click Point-to-Point Protocol (PPP). Then click Next.

Click None. Then click Next.

If your service provider gave you a specific IP address, type it in the “My IP address” text box. Then click Next

If your service provider gave you a specific Domain Name Server, type the address or addresses in the appropriate text boxes. Then click Next.

Click Finish.

Macintosh

Before you can connect your ISDN TA to the Internet or to another online service ( such as your company’s network), you must configur e Open Transport PPP and your TCP/IP settings.

Note: If your Macintosh uses System 8.5, you can use your Operating System’s Internet connection wizard, which will configure the settings discussed below.

Configuring Open Transport PPP

To configure Open Transport PPP:

Click the Apple Menu. Then select Control Panels and Modem.

When the “Modem” screen appears, click the Connect via drop- down menu.

Then select the port that your ISDN TA is connected to.

Click the Modem drop-down menu and select your ISDN TA.

Configuring TCP/IP

To configure TCP/IP:

Click the Apple Menu. Then select Control Panels and TCP/IP.

When the “TCP/IP” screen appears, click the Connect via dropdown menu and select PPP.

If you were provided with a Domain Name Server address by your Internet Service Provider, type it in the “Name Server addr.” text box.

If you were not given a Domain Name Server address, leave this box blank.

Leave all the other text boxes blank and close the “TCP/IP” screen.

Connecting to Your Service Provider

Click the Apple Menu. Then select Control Panels and PPP.

Click Registered User to select it.

Type your login name in the “Name” text box and your pa ssword in the “Password” text box.

Type the phone number that you dial to connect to your service provider or other online service in the “Number” text box.

Click Connect.

Note: For more information about special dialing procedures for

making an AO/DI or MultiLink PPP connection, see the chapter

“Dialing, Storing Phone Numbers, and Logging Calls.”

Other Operating Systems

If you are usi ng another operating system, such as Windows 3.x, MSDOS, UNIX, or Linux, you must install and use third-party communications or terminal software.

When you use this terminal software, you will have to use your ISDN TA’s AT Co mmand Set to configure your ISDN TA and set up the connection to your online service.

For more information on the AT Command Set, see the chapters

“Configuring Your ISDN TA Using AT Commands” and “AT Commands and S Registers.”

IALING

TORING PHONE NUMBERS

, S

AND LOGGING CALLS

Placing Calls Manually

You can place calls manually using your ISDN TA’s AT commands. To do so:

Open ControlCenter and click the Terminal icon.

If you are not using ControlCenter, send AT commands to your ISDN TA by opening a different piece of communication software’s terminal mode. For more information, see the software’s use rs manual.

Type ATD followed by the number. Then press Enter. (For example, type ATD14086542703 and press Enter.)

Note: If ATDT or ATDP is used, your ISDN TA will ignore the letter “T” or “P.”

Dialing for MultiLink PPP

With some Internet Service Providers or o ther o nline services, making a MultiLink PPP call may require dialing two phone numbers.

 If your service provider does not give you multiple numbers to

make a MultiLink PPP connection, simpl y enter the telephone number as yo u would normally, using your communications application, such as Windows Dial-Up Networking or third-party terminal software.

 If your service provider requires that you use multiple numbers,

enter the first number as you would normally. In the same text box, type & followed by the second number. Then complete the connection as you would nor ma ll y.

For example, type 14086542703&14086542704. Then finish setting up your connection as usual.

Note: If you are using Windows 95 or 98, be sure that Use country code and area code is turned off. If you are using NT,

be sure that Use Telephony dialing properties is turned off. These items are on the same connection properties screen as the box where you type the phone numbers.

Dialing for AO/DI Connections

To make an AO/DI connection, you will have to dial a number for your ISDN line’s D-channel. You may also have to dial numbers for your ISDN line’s B-channels.

 If your service provider only requires that you dial the D-channel

number, type a period in front of the telephone number, then enter it as you would normally, using your co mmunications o r terminal software.

For example, type .14085426793. Then finish setting up your connection as usual.

Note: If you are using Windows 95 or 98, be sure that Use country code and area code is turned off. If you are using NT,

be sure that Use Telephony dialing properties is turned off. These items are on the same connection properties screen as the box where you type the phone numbers.

 If your service provider requires that your dial the D-channel and

the B-channels, type a period in front of the D-channel number. Then type &, followed by the B-channel numbers, separated by &s.

For example, type .12625551212&12625331313&12623351212. Then finish sett ing up your connection as usual.

Storing Phone Numbers

Your ISDN TA can store up to 10 numbers for quicker dialing. Note: Only use this function if you can modify your software’s command to dial.

To store a number, type AT&Zn=s and press Enter.

In the place of n, type a number between zero and nine. This number will be the code number for the stored number. In the place of s, type the number that you want stored. To store the most recent number dialed, type L in the place of s.

Note: The stored number function will support the special dialing methods discussed above.

For example, type AT&Z2=18475551212&12625551847 and press Enter.

To dial this stored number, simply ATDSn and press Enter. In the place of n, type the code number for the stored number that you want to dial.

For example, type ATDS2 and press Enter.

Using Call Logging

Your ISDN TA automatically logs the five most recent incoming and outgoing data calls and calls to your ISDN TA’s Analog Device Ports. It records the date, time, and number for each call. For data calls, it also records the protocol used.

To view this log, open your terminal software (In ControlCenter, click the Terminal icon.). Then type ATI18 and press Enter.

PDATING YOUR

From time to time, revised code will be released for your ISDN TA to improve the way it works and what it can do.

ISDN TA

Using Instant Update

Instant Update can be used to check for, download, and implement these revisions, updating your ISDN TA and its software quickly and automatically.

To use Instant Update, open Contro lCenter and click the Instant Update icon.

When you open Instant Update, the screen shown in Figure 9-1 appears.

At the top of the screen is a list of devices and software that Instant Update can be used with.

Select the device you want to set the update parameters for by clicking it. If the device you want to set is not listed, click the Detect button.

Figure 9-1 Instant Update introduct ory sc reen

This screen also allows you to record all of Instant Update’s activity.



To create this record and enable it, make sure that the box next to

“Log all events” in the “Event Logging” section has a check mark in it.



To view this record, click View Event Log.



To erase this record and create a new one, click Clear Event Log.

Scheduling Tab

Click the Scheduling tab to set how often Instant Update checks for and, if available, downloads new software.

Note: For Instant Update to run automatically on the scheduled day, be sure that “Run Instant Update from the Windows Startup Group” is selected on Instant Update’s “Common” tab.

Instant Update will open and run in the background every time you turn on your computer. An icon will appear in your Windows Taskbar.

You can also have Instant Update check for new software immediately by clicking Update Now, as shown in Figure 9-2.

Figure 9-2 Instant Update “Scheduling” tab

Connection Tab

The Connection tab allows you to select which of your Dial-Up Networking connections Instant Update uses to download new code for your ISDN TA.

Select TCP/IP to use the default connection used by Windows (the connection that launches automatically when you open an application that requires an Internet connection).

To use a different connection, click Dial-Up Networking. Then select another connection from the “Preferred Connection Name” drop-down menu.

General Tab

The General tab allows you to enter a user name and password for logging on to computers that Instant Update co ntacts, other than the default 3Com site.

Do not enter any information on this screen unless instructed to do so by a 3Com Customer Support representative.

Flashing Your ISDN TA from Disk

To update your ISDN TA’s code without using Instant Update:

Open ControlCenter and click the Terminal icon.

Type ATI7 and press Enter.

An information screen appears. Take note of the “Code Date” of your ISDN TA.

Go to the 3Com U. S. Robotics Web site at http://www.usr.com/home/online. Then click Upgrades/Updates.

The site will help you find your IS DN TA and any revised code that may exist for it. Look for the newest file with the extension .xmp.

If the date of the code that you find is more recent than the code date of your ISDN TA, download the code that you find on the Web site.

Once the file has downloaded, click the Flash From Disk icon in ControlCenter.

The screen shown in Figure 3 appears. Click the … button (the “Browse” button with an ellipse on it next to the “Flash File Path” text box).

Figure 3 “Flash From Disk” screen

Find the file that you downloaded from the Web site. Select it and click OK.

Then click the Update button.

Flashing Your ISDN TA Manually with .XMP Flash

To update your ISDN TA’s code without using ControlCenter:

Open your terminal software.

Type ATI7 and press Enter.

An information screen appears. Take note of the “Code Date” of your ISDN TA.

Go to the 3Com U. S. Robotics Web site at http://www.usr.com/home/online. Then click Upgrades/Updates.

The site will help you find your IS DN TA and any revised code that may exist for it. Look for the newest file with the extension .xmp.

If the date of the code that you find is more recent than the code date of your ISDN TA, download the code that you find on the Web site.

In your terminal software, type AT~X! and press Enter.

A message appears that says, “SDL Xmodem file transfer,” followed by “Yes,” “No,” and “Test.”

Type Y to send the .xmp file to your ISDN TA via xmodem file transfer.

Note: If you are using a Macintosh, disable the MacBinary option in your terminal program.

SING PROTOCOL DECODE

Protocol Decode, a diagnostic tool that is a part of your ControlCenter software, reads, filters, and displays a record of the protocol information for connectio ns made by your ISDN TA. Your ISDN TA records all the protocol messages that pass between your ISDN TA, your computer, the telephone company switch, and the device that you are connecting to.

Note: Protocol Decode does not report information on connectio ns as they are happening. Instead, it displays information stored on your ISDN TA from past connections.

To use Protocol Decode, open ControlCenter and click the Protocol Decode icon. The screen shown in Figure 10-1 appears.

Figure 10-1 “Protocol Decode” screen

Options in the Protocol Deco de application include:



ISDN Signaling – Your ISDN TA tracks protocol information on

your ISDN line’s D-channel. If a check mark appears in the box next to an item, that sort of infor mation is displayed.

“Raw data” displays all the signaling messages passed along your ISDN line’s D-channel without decoding them.

“Q.921” displays messages interpreted by the Q.921 protocol.

“Q.931” displays messages interpreted by the Q.931 protocol.



Physical Interface – The check boxes in this section allow you to

review activity at the physical layer of your ISDN line and onhook and off-hook activity on your ISDN TA’s Analog Device Ports.



PPP/LCP Decode – The check boxes in this section allow you to

select which PPP messages B-channels will be displayed.

“Network” displays PPP messages passed between your ISDN TA and the device that it is connected to

“DTE” displays PPP messages passed between your ISDN TA and your computer.

Buttons in the Protocol Decode application include:



Save To Disk – Saves your ISDN TA’s Protocol Decode

information to your computer or to a disk.



Load From Disk – Loads saved information from your compute r

or from a disk.



Load From ISDN TA – Transfers the information from your

ISDN TA to the Protocol Decode application and displays it.



Reset ISDN TA Buffer – Deletes the current information in your

ISDN TA’s record.



Refresh – Redisplays the information currently in the Protocol

Decode, filtering it using the choices made in the check boxes.

ONFIGURING YOUR

ISDN TA

SING

This chapter outlines how to configure many of the common settings for your ISDN TA using AT commands. Further descriptions of these settings, as well as methods of adjusting these settings using the ControlCenter software that came with your ISDN TA, are discussed in previous chapters.

AT C

OMMANDS

Typing AT Commands

AT commands are used to change your ISDN TA’s settings. They are sent using your communications software’s terminal mode.

If you are using third-party communications software, consult the users manual for information on using terminal mode. If you are using the ControlCenter software that came with your ISDN TA, click the Terminal icon to reach terminal mode.

To issue a command, type it (remembering to put the “AT” in front of it) and press Enter. For example, type AT*S=1. Then press Enter.

The commands listed below are the only ones that do not require that AT precede them:

Command: Result:

A/ Re-executes the most recent command issued A> Repeats the most recent command until

canceled by pressing any key

+++ Returns your ISDN TA to command mode (Do

not press Enter after issuing this command.)

The sections below cover many of the commands necessary to configure your ISDN TA for connection to an Internet Service Provider or other online service. They are grouped by the ATI screens that provide you with information about how the settings are currently configured.

The sections below tell you how to issue an ATI command, show you what information is displayed when the command is issued, and then tell you how to adjust the settings referred to in the ATI information.

Default settings are listed in italics.

Note: This section is not an exhaustive list of AT commands. For a full list of commands, see the “AT Commands and S Registers” chapter.

ATI12 (Switch Settings)

Type ATI12 and press Enter. An information screen appears, listing your ISDN TA’s switch, SPID and telephone number, and Always On/Dynamic ISDN (AO/DI) information, as shown in Figure 11-1. Settings changed on the ATI12 screen do not have to be saved to NVRAM with &W. However, before settings will take affect you must reset the ISDN TA, with ATZ!

Figure 11-1 ATI12 information screen

Switch Protocol

The switch protocol is set using AT*W=n. The switch type is supplied by your telephone company when you order your ISDN line.

Command: Sets your switch type to:

AT*W=1 DMS-100 Custom

AT*W=2 National ISDN-1(default)

AT*W=3 National ISDN-2 AT*W=4 5ESS Custom Multipoint AT*W=5 5ESS Custom Point-to-Point AT*W=6 Leased Line 64 Kbps (1 B-channel) AT*W=7 Leased Line 128 Kbps (2 B-channels)

Telephone Numbers

The telephone numbers for your ISDN TA are set using AT*P=n. These numbers are supplied by your telephone company and are what people dial when they place a data call to your ISDN TA or to devices connected to your Analog Device Ports.

Command: Follow the equal sign with:

AT*P0= Area code AT*P1= Telephone number 1 (DN1) AT*P2= Telephone number 2 (DN2)

SPIDs

The Service Profile Identifiers (SPID) for your ISDN TA are set using AT*S=. When set to AutoSPID mode, your ISDN TA attempts to discern its SPIDs automatically.

To set AutoSPID mode:

Command: Result:

AT*S=0 Disables AutoSPID

AT*S=1 Enables AutoSPID (default)

To set the SPIDs manually:

Command Follow the equal sign with:

AT*S1= SPID for telephone number 1 AT*S2= SPID for telephone number 2

TEIs

The Terminal Endpoint Indentifiers (TEI) for your ISDN TA are set using AT*T=.

Command: Follow the equal sign with:

AT*T1= TEI for telephone number 1

If set to 255, TEI is set automatically

AT*T2= TEI for telephone number 2

If set to 255, TEI is set automatically

AO/DI

Always On/Dynamic ISDN allows low-bandwidth data operations to be carried on over your ISDN line’s D-channel. Its settings are adjusted using a number of AT commands.

To turn AO/DI on and off:

Command: Result:

AT*A=0 Disables AO/DI (default) AT*A=1 Enables AO/DI

To set the telephone number and TEI for AO/DI:

Command: Follow the equal sign with:

AT*PD= Packet Telephone Number on the

D-channel for AO/DI connections to your ISDN TA

AT*TD= 0-63 sets TEI to a fixed assignment

255 sets TEI automatically

Default setting is 21

To set the long distance packet carrier code for your D-channel’s X.25 connection:

Command: Follow the equal sign with:

AT*C0= Four-digit long distance

packet carrier code

Request Reverse Charge

To enable and disable the Request Reverse Charge option, which allows you to request that the charge for an X.25 connection on your ISDN TA’s D-channel be paid by the recipient of the call:

Command: Result:

AT*Y=0 Disable X.25 Requst Reverse Charge

(default)

AT*Y=1 Enable X.25 Request Revers Charge

ATI15 (Phone Port Settings)

Type ATI15 and press Enter. An information screen appears, listing the settings for your ISDN TA’s Analog Device Ports, as shown in Figure 11-2. There are two Analog Device Ports on the back of your ISDN TA. They are labeled 1 and 2. In all of the commands listed below, x represents the number of the Analog Device Port. Each of the settings can be adjusted for each port by typing the port’s number in the place of x.

Note: Many of the options in this section require that you have the proper ISDN line type installed. For more information, see the “Ordering ISDN Service” chapter.

Figure 11-2 ATI15 Information screen

Voice Bearer Capabilities

The outgoing voice bearer capability is set using AT#Bx=.

Command: Result:

AT#Bx=0 3.1 KHz Audio (default)

AT#Bx=1 Speech

Call Routing

Which telephone number will be assigned to which Analog Device Port is set using the AT#Rx=. By default, the first Analog Device Port is assigned the first telephone number, and the second Analog Device Port is assigned the second telephone number.

Command: Result:

AT#Rx=0 Disables incoming voice calls AT#Rx=1 Set the first telephone

number to the Analog Device Port x

AT#Rx=2 Set the second telephone

number to the Analog Device

Port x

Data Call Routing

The AT*R= command determines which telephone numbers can be answered as data calls.

Command: Result:

AT*R=0 Disables incoming data calls AT*R=1 Telephone number 1 can be

answered as a data call

AT*R=2 Telephone number 2 can be

answered as a data call

AT*R=4 Both telephone numbers can be

answered as data calls (default)

AT*R=8 Any telephone number can be

answered as a data call

Volume Control

The volume of voice calls is set using AT#VRx= and AT#VTx=. The volume levels are set on a scale of one to nine, one being the lowest and nine the highest.

Receive volume:

Command: Follow the equal sign with:

AT#VRx= 0 to mute the receive volume

1-9 to set volume on analog device port x (9 is the default)

Transmit volume:

Command: Follow the equal sign with:

AT#VTx= 0 to mute the receive volume

1-9 to set volume on analog device port x (9 is the default)

Supplementary Voice Services

The supplementary voice services for each Analog Device Port can be universally disabled using AT#Sx=.

Command: Result:

AT#Sx=0 Disable all supplementary voice services

to Analog Device Port x

AT#Sx=1 Enable any supplementary voice service

that is turned on individually on Analog Device Port x (default)

Call Waiting

Call Waiting (ACO) for each Analog Device Port can be turned on or off using AT#Ax=

Command: Result:

AT#Ax=0 Disable all incoming voice calls

to the given port

AT#Ax=1 Disable Call Waiting on the port

AT#Ax=2 Enable Call Waiting on the port

(default)

Three-way conference options

Each Analog Device Port’s three-way conference options can be turned on an off using AT#Cx=. A code for three-way conferencing will be provided by your phone company when you order the service.

Command: Follow the equal sign with:

AT#Cx= 0, disables conference options

60, a common code used to enable the option, is the default.. If your phone

company uses a different two-digit number, type it after the equal sign.

Call Drop

Call Drop for each Analog Device Port can be turned on or off using AT#Dx=.

Command: Follow the equal sign with:

AT#Dx= 0, disables call drop

62, a common code used to enable the option, is the default. If your phone

company uses a different two-digit number, type it after the equal sign.

Call Forwarding

Call Forwarding for each Analog Device Port can be turned on or off using AT#Fx=.

Command: Follow the equal sign with:

AT#Fx= 0, disables Call Forwarding

57, a common code used to enable the option, is the default. If your phone

company uses a different two-digit number, type it after the equal sign.

Call Transfers

The call transfer options for each Analog Device Port can be turned on or off using AT#Tx=.

Command: Follow the equal sign with:

AT#Tx= 0, disables call transfer

61, a common code used to enable the option, is the default. If your phone

company uses a different two-digit number, type it after the equal sign.

Message Waiting

The message waiting indicator for each Analog Device Port can be turned on or off using AT#Wx=. The alert LED on your ISDN TA will flash, or there will be a stutter dial tone on the phone if there is a message waiting.

Command: Follow the equal sign with:

AT#Wx= 0, disables message waiting indicator

63, a common code used to enable the

option, is the default. If your phone

company uses a different two-digit number, type it after the equal sign.

Caller ID

The Caller ID options for each Analog Device Port can be turned on or off using AT#Ix=.

Command: Result:

AT#Ix=0 Caller ID disabled on the port

AT#Ix=1 Caller ID enabled on the port

(default)

ATI16 (Data Protocol Settings)

Type ATI16 and press Enter. An information screen appears, listing your ISDN TA’s data protocol settings, as shown in Figure 11-3.

Figure 11-3 ATI16 Information screen

Incoming Protocol

The incoming data protocol is set using AT*VI=. Note: Unless your ISDN TA is set to Automatic Protocol Detect, it will only accept calls using the protocol that it is set to.

Command: Result:

AT*VI=0 Automatic Protocol Detect

(default)

AT*VI=1 V.120 Rate Adaption (Fixed) AT*VI=5 Auto Mode PPP AT*VI=7 Asynchronous 128K AT*VI=8 Advanced Asynchronous

128K

Outgoing Protocol

The outgoing data protocol is set using AT*VO=.

Command: Result:

AT*VO=1 V.120 Rate Adaption (Fixed)

AT*VO=5 Auto Mode PPP (default)

AT*VO=7 Asynchronous 128K AT*VO=8 Advanced Asynchronous

128K

PPP Mode

The PPP mode is set using AT*PPP=.

Command: Result:

AT*PPP=0 Sets all PPP-related values to their

defaults AT*PPP=1 Transparent Async-to-Sync PPP AT*PPP=2 Single Link PPP AT*PPP=3 128 Kbps MultiLink PPP

AT*PPP=4 MultiLink PPP with DBA (default)

AO/DI Channel Management

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. Using Dynamic Bandwidth Allocation, it also engages and disengages the B-channels as they are needed.

The number of B-channels being managed by AO/DI is se t using AT*A0=.

Command: Result:

AT*A0=0 AO/DI can use only the D-channel AT*A0=1 AO/DI can use only the D-channel

and a maximum of one B-channel

AT*A0=2 AO/DI can use the D-channel and

two B-channels (default)

BACP/BAP

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. If BACP/BAP is not needed during a given connection, it will not be used, even if it is enabled.

BACP/BAP is turned on and off using AT*B=.

Command: Result:

AT*B=0 Disable BACP/BAP

AT*B=1 Enable BACP/BAP (default)

BACP/BAP Dial Prefixes

To set the dialing prefixes for BACP/BAP, type AT*Cx=.

Command: Follow equal sign with:

AT*C1= Dial-out prefix for BACP/BAP AT*C2= Long distance dial-out for BACP/BAP

AO/DI Callback

With an AO/DI connection, the D-channel is connected first. When additional bandwidth is needed, BACP/BAP can request the server to call back on a B-channel, when AO/DI callback is enabled. The server must support your account with callback feature. .

Note: To use AO/DI callback, BACP/BAP must be enabled using the AT*B=.

Command: Result:

AT*C3=0 Disable AO/DI callback (default)

AT*C3=1 Enable AO/DI callback

Dynamic Bandwidth Allocation Thresholds

These settings allow you to adjust how often the B-channels are checked to see if they need to be added or dropped and what percentage of the channels must be in use before they are added or dropped.

Command: Follow the equal sign with

AT*A1= Sample time (1-999 seconds) to add B1-

channel in AO/DI

AT*A2= Sample time (1-999 seconds) to return to

D-channel in AO/DI

AT*A3= D-channel threshold level to add B1 -

channel in AO/DI (percentage)

AT*A4= Threshold level to return to D-channel in

AO/DI (percentage)

AT*D1= Sample time (1-999 seconds) to increase

bandwidth in MultiLink PPP

AT*D2= Sample time (1-999 seconds) to decrease

bandwidth in MultiLink PPP

AT*D3= Threshold level to increase bandwidth

(percentage)

AT*D4= Threshold level to decrease bandwidth

(percentage)

Dynamic Voice Override

Dynamic Voice Override (DVO) manages calls to analog devices on your ISDN line when your data connection is active.

DVO is configured using AT*E=.

Command: Result:

AT*E=0 Disable Dynamic Voice Override

AT*E=1 Enable DVO for incoming and

outgoing calls (default)

AT*E=2 Enable DVO for outgoing calls only AT*E=3 Enable DVO for incoming calls only

Compression Mode

The PPP compression mode is set using AT*K=.

Command: Result:

AT*K=0 Pass Through Compression

AT*K=1 Auto Compression (default)

AT*K=2 Turbo PPP Compression

MLPPP Endpoint Discriminator Class

The Endpoint Discriminator Class for MLPPP is set using AT*U=.

Command: Result:

AT*U=0 Automa tic assignment (default)

AT*U=1,xxx Locally assigned address xxx AT*U=2,xxx Internet Protocol address xxx AT*U=3,xxx IEEE 802.1 globally assigned MAC address xxx AT*U=4,xxx PPP Magic Number Block xxx AT*U=5,xxx Public Switched Network Directory Number xxx

ROUBLESHOOTING

Note: Many of the remedies below involve changing the settings of your ISDN TA using ControlCente r. All of these settings can also be changed using AT commands and your computer’s communications software. For more information, see the chapter “Configuring Your

ISDN TA Using AT Commands.”

When I connect to my Internet Service Provider, the B1 and B2 lights illuminate on my ISDN TA. However, my connect speed in Dial-Up Networking only shows 64 Kbps rather than 128 Kbps.

When in PPP mode, your ISDN TA only reports single B-channel connect speeds to the operating system. If the B1 and B2 lights are illuminated, you have a MultiLink connection.

If Dial-Up Networking shows that you are connected at 64 Kbps and both B1 and B2 lights are illuminated, you are connected at 128 Kbps. If Dial-Up Networking shows that you are connected at 56 Kbps and both B1 and B2 lights are illuminated, you are connected at 112 Kbps.

When I download large files, the second B-channel on my ISDN line is used, and the B2 light on my ISDN TA illuminates. Most other times, however, only my B1 light illuminates, and only one B-channel is used. How can I connect to my Internet Service Provider with two B channels all the time?

Open the ControlCenter. Then clic k the Configuration Manager icon.

When the “Basic Configuration” screen appears, click the Outgoing Calls drop-down menu. Then select Internet Access (PPP) 128 Kbps.

When someone calls my ISDN line with a voice call, one of my B-channels used for 128 Kbps data transmission is turned off and the phone connected to my ISDN TA rings. How do I prevent calls from being accepted while there is a data transmission on both B-channels?

Open ControlCenter. Then click the Configuration Manager icon.

When the “Basic Configuration” screen appears, click the Dynamic

Voice Override drop-down menu. Select either No Dynamic Voice Override or Outgoing Calls only.

If you select “No Dynamic Voice Override,” a B-channel will never be taken off the data transmission to make or accept a voice call.

If you select “Outgoing Calls o nly,” a B-channel will be taken off a data transmission only when you attempt to place a voice call from a telephone connected to your ISDN TA. When a voice call is made to a telephone connected to your ISDN TA, the caller will get a busy signal.

During a 128 Kbps connection, anyone dialing one of my ISDN phone numbers (Directory Numbers) gets a busy

signal. How do I set my ISDN TA to drop one of the Bchannels on the data transmission and allow the call to come through?

Open ControlCenter. Then click the Configuration Manager icon.

When the “Basic Configuration” screen appears, click the Dynamic

Voice Override drop-do wn menu. Then se lect Incoming and Outgoing Calls.

If this does not work, have the person try calling the other phone number for your ISDN line. Dynamic Voice Override may work on only one of your phone numbers, depending upon the type of ISDN service that you use.

When I try to place a call to my Internet Service Provider, I am unable to make a connection.



Make sure your ISDN TA is properly configured for the ISDN

line by running ControlCenter. If there is a problem with the way the SPIDs and telephone numbers for your ISDN line are set up, ControlCenter’s SPID Wizard will reconfigure your ISDN TA.



Open ControlCenter and click the Configuration Manager icon.

When the “Basic Configuration” screen appears, verify that “Internet Access (PPP)” is selected in the “Outgoing Calls” dropdown menu. This is the most common connection protocol used by Internet Service Providers.



Verify that the CD light on the front of your ISDN TA illuminates

when you place a call to your Internet Service Provider. If the CD light does not come on after you dial, open ControlCenter and click the Configuration Manager icon. When the “Basic Configuration” screen appears, click 56K next to “B-channel Rate.”



You may need to use a special character in the number you dial (if

you are using AO/DI or MultiLink PPP, for example). For more information, see the chapter “Dialing, Storing Phone Numbers,”

and Logging Calls.”

When I place a call to my server, the CD light on the front of the ISDN TA illuminates. However, I cannot authenticate to the remote server.

Open ControlCenter. Then click the Configuration Manager icon.

Click the Advanced Configuration button, followed by the Data tab. Then click the PPP Settings button.

When the “PPP Settings” screen appears, click the PPP Mode dropdown menu. Then clic k Transparent Async/Sync PPP to select it.

The Remote Access Server that I dial does not have a hunt group, and I need to dial two phone numbers to get a 128 Kbps connection. How do I do this?

In the phone number section of your dialing program type both phone numbers separated by &. (for example, 5551212&5551213) Then complete your co nnection as usual.

If you are using Dial-Up Networking in Windows 95 or 98, turn off Use area code and Dialing Properties. There is not a check mark in the box next to the item when it is turned of f. If you are using Dial-Up Networking in Windows NT 4, turn off Use Telephony dialing properties.

When I call to other ISDN equipment using a terminal program (such as Hyperterminal), I can’t send or receive data.

V.120 or Asynchronous 128K must be used if you are using your ISDN TA with a terminal program.

Open ControlCenter and click the Configuration Manager icon. Verify that “V.120 Rate Adaption” or “Asynchronous 128 Kbps” is selected in the “Outgoing Calls” drop-down menu. Note: The device that you are connecting to must be using the same protocol that your ISDN TA is using.

If your ISDN TA will also be receiving calls in a terminal program, click the Advanced Configuration button. Click the Data tab. Then verify that “V.120 Rate Adaption” or “Asynchronous 128 Kbps” is selected in the “Incoming Call Protoc ol” drop-down menu.

How do I program the SPIDs for my ISDN TA without using the ControlCenter software?

You can initiate SPID Wizard from a terminal program.

Open your terminal softwa re (such as H ype rterminal) . Then type AT*Zx,y,z and press return.

Type this command without any spaces and let x equal your area code, y equal the first telephone number (Directory Number) for your ISDN line, and z equal the second telephone number for your ISDN line. The telephone numbers are provided by your telephone company when you order ISDN service. The SPID Wizard will try to configure your ISDN TA for your ISDN line using the telephone number information.

How do I program the SPIDs and other ISDN line information for my ISDN TA without using the ControlCenter software or the SPID Wizard?

Open a terminal program, such as Hyperterminal.

To set your switch protocol, type AT*W=n and press Enter. Type the number that corresponds to your switch type in the place of n, using the list below as reference.

n=1 DMS-100

n=2 National ISDN-1 (default)

n=3 National ISDN-2 n=4 5ESS Custom Multipoint n=5 5ESS Custom Point-to-Point n=6 Leased Line 64 kbps (1 B-channel) n=7 Leased Line 128 kbps (2 B-channels)

To enter your area code information, type AT*P0=xxx and press Enter. In the place of xxx, type your area code.

To enter a telephone number for your ISDN TA, type AT*P1=xxx and press Enter. In the place of xxx, type one of the telephone numbers for your ISDN line. To enter a second telephone number, type AT*P2=xxx and press Enter. Type the second telephone number in the place of xxx.

To enter the SPID for your first telephone number, type AT*S1=xxx and press Enter. Type the SPID in the place of xxx. To enter the SPID for your second telephone number, type AT*S2=xxx and press Enter. Again, type the SPID in the place of xxx.

Once your numbers have been set, type ATZ! to resynchronize your ISDN TA to the telephone company’s switch equipment. The alert light will turn off when the ISDN TA is prop e rly synchronized to the telephone company switch. This may take one minute to complete.

These settings do not have to be saved using the &W co mmand.

Where can I get access to Q.931 and PPP information generated by my ISDN TA?

Open ControlCenter and click the Protocol Decode icon. A protocol monitor program will then extract this information from your ISDN TA.

When I dial an NT Server, call back doesn’t work with my ISDN TA.

Make sure the BACP/BAP is enabled.

Open ControlCenter and click the Configuration Manager icon. Then click the Advanced Configuration button.

Click the Data tab. Then click the PPP Settings button. If a check mark does not appear next to “Enable BACP/BAP,” click it to select it. A check mark will appear in the box next to the item when it is selected.

When I use Asynchronous 128K, I cannot connect to other ISDN products that support BONDING.

Asynchronous 128K and Advanced Asynchronous 128K are both 3Com proprietary protocols. You must use the same type of ISDN equipment on both sides of the connection.

The supplementary voice features for my ISDN line are not working.

Your ISDN TA only supports supplementary voice features when you use a National ISDN ordering code to se t up your ISDN service. If you had to order your service by switch type, these features ma y not work.

Also, many of the National ISDN codes only support the supplementary voice features on one of your ISDN line’s phone numbers. Each of your Analog Device Ports is assigned one of your ISDN line’s telephone numbers. Be sure your phone is plugged into the Analog Device Port that is assigned the phone number that supports the supplementary voice features.

Check with your phone company to find out what ISDN ordering code you are using and to find out which of your phone numbers supports the supplementary voice features.

The device I am connecting to requires Microsoft Encrypted Password. When I check the box to use the protocol in Dial-Up Networking I cannot logon to my remote server.

Your ISDN TA does support the Microsoft Encrypted Password. However, the check box in Dial-Up Networking should not be selected. The remote server you are calling will require the connection be authenticated with the Microsoft Encrypted Password. The ISDN TA will send the password using the Microsoft Encrypted Password even though the box is unchecked in Dial-Up Networking.

To turn this option off, click Windows Start, select Programs and Accessories, and click Dial-Up Networking. Right-click the icon of the connection you want to change. Then click Properties.

When the properties screen for your connection appears, click the

Server Types icon. In the “Advanced Options” section, turn off Require encrypted password by clicking it. The check mark in the box next to the item disappears when it is turned off. Then click OK.

When I call an NT server using Windows 95 Dial-Up Networking, I do not get prompted for my domain when I am logging in.

In the user name text box, add a backslash and your domain in capital letters after your regular user name (for example, username\DOMAIN).

My ISDN TA is connected to my computer using a serial cable. When I try to set my modem speed in Windows to

230.4 Kbps (230,400), my ISDN TA won’t dial out.

Using the 230.4 Kbps port speed with Windows requires a special serial port. Most new computer’s serial ports operate at up to 115.2 Kbps. To use your ISDN TA at 230.4 Kbps, check with your computer manufacturer to see if your serial port will support that speed.

I cannot connect when I try to make an AO/DI call.



Be sure that your Internet Service Provider supports AO/DI.



Be sure that you put a period in front of the telephone number for

your D-channe l.

If you are usi ng Windows 95 or 98 Dial-Up N etworking, be sure that Use country code and area code is turned off. If you are using Windows NT, be sure that Use Telephony dialing properties is turned off. These items is on the same connection properties screens as the boxes where you type the phone numbers.

Also be sure that you are dialing the proper number with the area code and prefix if necessary.



Be sure that AO/DI is enabled.

Open ControlCenter and click the Config uration Manager icon. Click the Advanced Configuration button. Then click the ISDN Line tab.

At the bottom of the “ISDN Line” screen be sure that Enable AO/DI (Always On/Dynamic ISDN) is selected. A check mark appears in the box next to the item when it is selected.



Be sure that your ISDN TA is using PPP.

Open ControlCenter and click the Config uration Manager icon. Then click the Advanced Configuration button.

Click the Outgoing Call Protocol drop-down menu. Then click Internet Access (PPP).



If your service provide does not support Reverse Charge Request,

be sure that it is turned off.

Open ControlCenter and click the Config uration Manager icon. Then click the Advanced Configuration button.

Click the ISDN Line tab. Then click the AO/DI Settings button.

In the “AO/DI Operations” section, turn off Enable Reverse Charge Request. There will not be a check mark in the box next to the item when it is turned off.



If you require a long distance packet carrier for your D-channel’s

X.25 connection, be sure that the carrier code and packet telephone number are correct.

This information is provided by your phone company.

Open ControlCenter and click the Config uration Manager icon. Then click the Advanced Configuration button.

Click the ISDN Line tab. Then click the AO/DI Settings button.

Enter the information in the “Network Settings” section.

While making an AO/DI connection, my ISDN line’s Bchannels will not engage.

Open ControlCenter and click the Configuration Manager icon. Click the Advanced Configuration button. Then click the ISDN Line tab.

At the bottom of the “ISDN Line” screen be sure that Enable AO/DI (Always On/Dynamic ISDN) is selected. A check mark appears in the box next to the item when it is selected.

Then click the AO/DI Settings button.

In the “AO/DI Operations” section, you can also set the number of Bchannels be ing managed by AO/DI.

Click the Maximum A O/DI Bandwidth drop-down menu.



If you want AO/DI to have control over o nly the D-chan nel of

your ISDN line, click D-channel Only.



If you want AO/DI to be ab le to engage one of your B-chan nels

when necessary, click D-channel + 1 B-channel.



If you want AO/DI to be ab le to engage both B-channels when

necessary, click D-channel + 2 B-channels.

If your service provider requires that you dial a number for the Dchannel as well as both B-channels, also be sure that you are dialing correctly.

Type a period in front of the D-channel number. Then type &, followed by the B-channel numbers, separated by &.

For example, type .12625551212&12625331313&12623351212. Then finish setting up your connectio n as usual.

Note: If you are using Windows 95, or 98 be sure that Use country code and area code is turned off. I f you are using W indows NT 4 be

sure that the Use Telephony Dialing properties is turned off. This item is on the same connection properties screen as the box where you type the phone numbers.

During an AO/DI connection, my B-channels stay up too long.

To adjust your D ynamic Bandwidth Allocation threshold settings, open ControlCenter and click the Configurat ion Manager icon. Then click the Advanced Configuration button.

Click the PPP Settings button. In the “PPP Mode” drop-down menu, be sure that MultiLink PPP with Dynamic Bandwidth Allocation is selected.

Then click the Dynamic Bandwidth button.

Your ISDN line’s two B-channels are represented on the “B-channel Threshold Settings” screen. The settings that can be adjusted include:



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.

RDERING

ISDN S

ERVICE

Placing Your ISDN Order through 3Com

To have your ISDN order placed for you, simply call 1-800-572-3Com.

A 3Com representative will ask what services you require on your ISDN line, provide the appropriate information to your telephone company, and schedule an appointment for the installation of your ISDN line.

Placing Your Order through Your Telephone Company

To order ISDN service through your phone company, call the company and ask if they use National ISDN Ordering Codes.



If your phone company uses National ISDN Ordering Codes, go

to the “Using National ISDN Ord e ring Codes” section of this chapter.



If your phone company does not u s e National ISDN Ordering

Codes, ask what sort of ISDN switch type your line will be using. Take note of the type, then go to the “Ordering by Switch Type” section of this chapter.

Using National ISDN Ordering Codes

These codes simplify ordering ISDN service by grouping common features and capabilities in packages that can be requested by name. This means that you can order your ISDN service without discussing an incredible number of parameters one-by-one with your phone company’s ISDN representative.

Using an ordering code also ensures that the phone line will function properly with your ISDN equipment.

One of the National ISDN Ordering Codes listed below will likely meet your needs.

Note: Many other capability packages may be available for your ISDN line, and many features can be added to your package individually.

However, not all capability packages may be availab le from your phone company.

If you have any questions about what is included in a capability package or how to add something to that package, ask your phone company’s ISDN representative.

Ordering Codes with Supplementary Voice Services



EZ-ISDN 1 or IOC U – This package carries voice and data

traffic at speeds of up to 128 Kbps along two B-channels.

It allows you to use analog devices, such as a telephone or fax machine, on your ISDN line and includes Calling Number Identification for both data and voice calls.

EZ-ISDN 1 is also set up to allow supplementary voice services for one analog device on the ISDN line. Such services include Call Waiting, Call Forwarding, and three-way conference options (hold, drop, consultation call, and transfer).

Caller ID is also available for both Analog Device Ports.



EZ-ISDN 1A or IOC V – This package carries voice and data

traffic at speeds of up to 128 Kbps along two B-channels.

It allows you to use analog devices, such as a telephone or fax machine, on your ISDN line and includes Calling Number Identification for both data and voice calls.

EZ-ISDN 1A is also set up to allow supplementary voice services for one analog device on the ISDN line. Such services include Call Waiting, Call Forwarding, and three-way conference options.

Message waiting indicator for voice mail is also supported.



IOC S1 – This package may also be known as “IOC S with

Additional Call Offering.” It carries voice and data traffic at speeds of up to 128 Kbps along two B-channels.

IOC S1 allows you to use analog devices, such as a telephone or fax machine, on your ISDN line. It includes Calling Numb er Identification for both data and voice calls, and call waiting for both directory numbers, but does not include other supplemental voice services.

Ordering Codes with Supplementary Voice Services and AO/DI



EZ-ISDN 3 – This package is very similar to EZ-ISDN 1. It

carries voice and data traffic at speeds of up to 128 Kbps and allows you to use analog device s on your ISDN line.

It supports EZ-ISDN 1’s supplementary voice features for one directory number.

EZ-ISDN 3 also supports AO/DI, allowing you to take full advantage of your ISDN line’s often-underused D-channel.



EZ-ISDN 3A – This package is very similar to EZ-ISDN 1A. It

carries voice and data traffic at speeds of up to 128 Kbps and allows you to use analog device s on your ISDN line.

In addition, supports EZ-ISDN 1A’s supplementary voice features for one directory number along with message waiting indicator for voice mail.

EZ-ISDN 3A also supports AO/DI, allowing you to take full advantage of your ISDN line’s often-underused D-channel.



Capability package AB – This package includes the same

functionality as EZ-ISDN 3 with t he addition of supplementary voice features on both directory numbers.



Capability package AC – This package includes the same

functionality as EZ-ISDN 3 A wit h the ad dition of supplementary voice features on both directory numbers.



IOC X – As with IOC S1, this package carries voice and data

traffic at speeds of up to 128 Kbps along two B-channels.

It also allows you to use analog devices, such as a telephone or fax machine, on your ISDN line. It includes Calling Numb er Identification for both data and vo ice calls and Call Waiting for both directory numbers. However, additional voice services are not supported.

Unlike IOC S1, however, IOC X supports Always On/Dynamic ISDN (AO/DI), allowing you to take full advantage of your ISDN line’s often-underused D-cha nnel.

Ordering Codes without Supplementary Services Voice Services or AO/DI



IOC S – This package allows for data connections of up to

128Kbps along two B-channels. It supports voice and data calls on both B-channels, as well as Calling Number Identification.

Ordering by Switch Type

If your phone company does not use National ISDN Ordering Codes, ask the phone company what type of switch you will be using. Then provide the information listed belo w for your switch type.

Note: The parameters listed below support voice and data traffic at speeds of up to 128 Kbps. They allow you to use two analog devices, such as a telephone or fax machine, on your ISDN line.

However, your ISDN TA does not support supplementary voice services when you order by switch type.

5ESS Multipoint or 5ESS Point-to-Point Switch

To order service for the 5ESS Multipoint or Po int-to-Point switch, supply the following informatio n:

Required Information:

Line Type Standard National

Line Code 2B1Q

Interface Type U interface, RJ-11 jack

Directory Numbers (Telepho ne Numbers)

Maximum Terminals 2 (If you are ordering

Maximum B-channels 2

Actual User Yes

Circuit-switched Voice Yes

Ask for:

ISDN-1 line (If you are ordering for a point-to-point switch, ask for point-to-point configuration.)

for a point-to-point switch, order only 1 terminal.)

Circuit-switched Voice Channel

Circuit-switched Data 2

Circuit-switched Data Channel

Terminal Type A (Basic)

Any

Display Yes

Circuit-switched Voice Limit

Circuit-switched Data Limit

Voice or Data Both

Call Appearance Idle

Flexible Call Offering No

DMS 100 Switch

To order service for the DMS 100 Switch, supply the following information:

Required Information:

Line Type Standard National

Line Code 2B1Q

Interface Type U interface, RJ-11 jack

Directory Numbers 2

Ask for:

ISDN-1 line

Circuit-switched Option

Bearer Restriction Option

Protocol Functional version 2

SPID Suffix 1

Terminal Endpoint Identifier (TEI)

Maximum Keys 64

Ring No

Key System (EKTS) No

Voice or Data Both

Data Option Lower layer

Flexible Call Offering No

Yes

No packet mode data (NOPMD)

(PVC 2)

Dynamic

compatibility

AT C

OMMANDS AND

EGISTERS

S R

Using AT Commands

AT commands are used to change your ISDN TA’s settings. They are sent using communications software’s terminal mode.

To issue a command, type it (remembering to put the “AT” in front of it) and press Enter. For example, type AT*S=1. Then press Enter.

To write commands to the ISDN TA’s permanent memory, use the &W command.

The commands listed below are the only ones that do not require that AT precede them:

Command: Result:

A/ Re-executes the most recent command issued A> Repeats the most recent command until

canceled by pressing any key +++ Returns your ISDN TA to command mode (Do

not press Enter after issuing this command.)

Default settings are listed in italics.

Basic AT Commands

Commands: Results:

AT$ Help, comma nd summary ATA Answer Data Call ATDn Dials a telephone number

n=0-9 Digits to dial n=* Auxiliary tone dial digit n=# Auxiliary tone dial digit n=R Call an originate only n=. Wait for a connection n=; Remain in command mode n=“ Dial alphanumeric phone numbers n=W Wait for second dial tone (X3-X7)

n=@ Wait for an answer (X3-X7) ATDn1&n2 Dial numbers n1 and n2 ATD.n1 Dial n1 for a X.25 AO/DI number ATDL Dial last phone number ATSn Dial stored number n ATD$ Help for dial commands ATEn n=0 No command echo

n=1 Echo command characters (default)

ATFn n=0 Online echo

n=1 No online echo (default)

ATHn n=0 On hook (ready to accept calls)

n=2 Reject incoming calls ATIn Information screens

n=0 Product code

n=1 Flash CRC

n=2 RAM test

n=3 Product name

n=4 Current settings

n=5 NVRAM settings

n=6 Data call statistics

n=7 Configuration pr ofile

n=12 ISDN switch settings

n=15 Phone port settings

n=16 Data protocol settings

n=18 Call logging

n=* Information screen menu ATO Return online ATQn n=0 Result codes sent

n=1 No result codes

n=2 Verbose/Quiet on answer (default)

ATVn n=0 Numeric responses

n=1 Verbal responses

ATXn n=0 Basic result codes

n=1 Extended result codes

n=2-7 Advanced result codes (default=7) ATZ Restore configuration to NVRAM settings ATZ! ISDN physical layer reset

AT& Commands

Command: Result:

AT&$ Help, & commands AT&An n=0 Display basic connection result codes

n=3 Display extended connection result codes (default)

AT&Bn n=0 Floating DTE speed after connection

n=1 Fixed DTE speed after connection (default)

AT&Cn n=0 CD always on

n=1 ISDN TA controls CD (default)

AT&Dn n=0 Ignore DTR

n=1 Online command mode on DTR off

n=2 Normal DTR mode (default)

AT&Fn n=0 No flow control template

n=1 Hardware flow control template

n=2 Software flow control template

n=4 Factory default maintain ISDN settings

n=5 Factory default reset ISDN settings AT&Hn n=0 Disable TX flow control

n=1 CTS TX flow contro (default)

n=2 Xon/Xoff Tx flow control

n=3 CTS and Xon/Xoff flow control AT&In n=0 Disable Xon/Xoff RX flow control (default)

n=1 Enable Xon/Xoff RX flow control

n=2 Xon/Xoff characters filtered

n=3 HP Enq/Ack host mode

n=4 HP Enq/Ack Terminal Mode

n=5 Xon/Xoff for non-ARQ Mode AT&Rn n=0 CTS follows RTS

n=1 Ignore RTS

n=2 RTS RX flow contro(default)

AT&Sn n=0 DSR always on (default)

n=1 Modem controls DSR

n=2 Pulse DSR, CTS=CD

n=3 Pulse DSR

n=4 DSR=DCD

n=5 DSR normal, CTS=CD AT&W Store configuration ATZn=s Store phone number s as n ATZn=L Store most recent phone number as n ATZn? Query phone number n

AT* Commands

Command: Result:

AT*$ Help, * commands AT*A=n AO/DI

n=0 Disable (default)

n=1 Enable AT*A0=n AO/DI band wid th management

n=0 D-channel only

n=1 D-channel and maximum one B-channel

n=2 D-channel and maximum two B-channels AT*A1=n Sample time (seconds) to add B-channel in AO/DI AT*A2=n Sample time (seconds) to return to D-channel in AO/DI AT*A3=n D-channel threshold level (percentage) to add B1-channel in AO/DI AT*A4=n Threshold level (percentage) to return to D-channel in AO/DI AT*B=n n=0 Enable BACP

n=1 Disable BACP (default)

AT*C0=n Code for long distance packet carrier AT*C1=n Prefix to dial outside line for BACP callback AT*C2=n Long distance prefix for BACP callback AT*C3=n n=0 Disable callback for AO/DI

n=1 Enable callback for AO/DI (default)

AT*D1=n Sample time (seconds) to increase bandwidth in MLPPP AT*D2=n Sample time (seconds)to decrease bandwidth in MLPPP AT*D3=n Threshold level (percentage) to increase bandwidth MLPPP AT*D4=n Threshold level (percentage) to decrease bandwidth in MLPPP AT*E=n n=0 Disable Dynamic Voice Override

n=1 Enable DVO for both incoming and outgoing calls

(default)

n=2 Enable DVO for outgoing calls

n=3 Enable DVO for incoming calls AT*K=n Compression mode in PPP

n=0 Pass through compression

n=1 Auto compression (default)

n=2 Turbo PPP compression AT*PPP=n PPP mode

n=0 Set all related PPP default values

n=1 Async/Sync PPP

n=2 Single link PPP

n=3 MultiLink PPP

n=4 MultiLink PPP with Dynamic Bandwidth Allocation

(default)

AT*P0=n Area code AT*P1=n Telephone number 1 (DN1) AT*P2=n Telephone number 2 (DN2) AT*PD=n T elephone number for X.25 on D-channel AT*R=n Call routing for data port

n=0 Disable incoming data calls

n=1 DN1

n=2 DN2

n=4 DN1 and DN2

n=8 Any number AT*S=n n=0 Disable AutoSPID mode

n=1 Enable AutoSPID mode (default)

AT*S1=n SPID0 AT*S2 SPID1 AT*T1=n Fixed TEI number for DN1

n=255 Automatic TEI assignment for DN1(default)

AT*T2=n Fixed TEI number for DN2

n=255 Automatic TEI assignment for DN2(default)

AT*TD=n Fixed TEI for X.25 on D-channel

n=255 Automatic TEI assignment for X.25 on D-channel AT*U=n,xxx MLPPP Endpoint Discriminator

n=0 Automatic assignment (default)

n=1 Locally assigned address xxx

n=2 Internet Protocol address xxx

n=3 IEEE 802.1 Globally Assigned MAC Address xxx

n=4 PPP Magic Number Block xxx

n=5 Public Switched Network Directory Number xxx AT*VI=n Data protocol for incoming calls

n=0 Auto detect (default)

n=1 V.120 Rate Adaption

n=5 Auto mode PPP

n=7 Asynchronous 128K

n=8 Advanced Asynchronous 128K with DBA AT*VO=n n=1 V.120 Rate Adaption

n=5 Auto mode PPP (default)

n=7 Asynchronous 128K

n=8 Advanced Asynchronous 128K with DBA AT*W=n n=1 DMS-100 Custom Switch

n=2 National ISDN 1 (default)

n=3 National ISDN 2

n=4 5ESS Custom Multipoint

n=5 5ESS Custom Point-to-Point

n=6 Leased Line 64 Kbps

n=7 Leased Line 128 Kbps AT*Zxx,yy,zz SPID Wizard

xx=Area code

yy=First seven-digit telephone number (DN1)

zz=Second seven-digit telephone number (DN2)

AT# Commands

Command: Result:

AT#$ Help, # commands AT#A1=n Call Waiting on ADP1

n=0 Disable incoming calls

n=1 Disable Call Waiting

n=2 Call Waiting enabled (default)

AT#A2=n Call Waiting on ADP2

n=0 Disable incoming calls

n=1 Disable Call Waiting

n=2 Call Waiting enabled (default)

AT#B1=n Voice Bearer Capability on ADP1

n=0 3.1 KHz audio (default)

n=1 Speech AT#B2=n Voice Bearer Capability on ADP2

n=0 3.1 KHz audio (default)

n=1 Speech AT#C1=n Call Conferencing on ADP1

n=0 Disable

n=60 Enabled by default, other number may be assigned by

phone company to enable feature

AT#C2=n Call Conferencing on ADP2

n=0 Disable

n=60 Enabled by default, other number may be assigned by

phone company to enable feature

AT#D1=n Call Drop on ADP1

n=0 Disable

n=62 Enabled by default, other number may be assigned by

phone company to enable feature

AT#D2=n Call Drop on ADP2

n=0 Disable

n=62 Enabled by default, other number may be assigned by

phone company to enable feature

AT#F1=n Call Forwarding on ADP1

n=0 Disable

n=57 Enabled by default, other number may be assigned by

phone company to enable feature

AT#F2=n Call Forwarding on ADP2

n=0 Disable

n=57 Enabled by default, other number may be assigned by

phone company to enable feature

AT#I1=n Caller ID on ADP1

n=0 Disable

n=1 Enable (default

AT#I2=n Caller ID on ADP2

n=0 Disable

n=1 Enable (default)

AT#R1=n Voice call routing on ADP1

n=0 Disable incoming voice calls

n=1 DN1 (default)

n=2 DN2 AT#R2=n Voice call routing on ADP1

n=0 Disable incoming voice calls

n=1 DN1

n=2 DN2 (default)

AT#S1=n Global control of all supplementary services on ADP1

n=0 Disable all supplementary services

n=1 Enable any services that are enabled individually

(default)

AT#S2=n Global control of all supplementary services on ADP2

n=0 Disable all supplementary services

n=1 Enable any services that are enabled individually

(default)

AT#T1=n Call Transfer on ADP1

n=0 Disable

n=61 Enabled by default, other number may be assigned by

phone company to enable feature

AT#T2=n Call Transfer on ADP2

n=0 Disable

n=61 Enabled by default, other number may be assigned by

phone company to enable feature

AT#VR1=n Receive volume on ADP1

n=0 Mute receive

n=1-9 Set volume (1=minimum, 9=maximum) AT#VR2=n Receive volume on ADP2

n=0 Mute receive

n=1-9 Set volume (1=minimum, 9=maximum) AT#VT1=n Transmit volume on ADP1

n=0 Mute transmit

n=1-9 Set volume (1=minimum, 9=maximum) AT#VT2=n Transmit volume on ADP2

n=0 Mute transmit

n=1-9 Set volume (1=minimum, 9=maximum) AT#W1=n Message waiting indicator on ADP1

n=0 Disable

n=63 Enabled by default, other number may be assigned by

phone company to enable feature

AT#W2=n Message waiting indicator on ADP2

n=0 Disable

n=63 Enabled by default, other number may be assigned by

phone company to enable feature

AT#D=n Date in mm:dd:yy format AT# T=n Time in hh:mm:ss

S Registers

Command: Result:

ATS0 Ring to answer on ATS1 Counts number of r i ngs ATS2=n Escape code character ATS3=n Carriage return character ATS4=n Line feed character ATS5=n Backspace character ATS12=n Escape code time in 1/50s of a second ATS13=n n=1 Reset on DTR loss

n=2 Originate in auto answer

n=4 No pause before result codes

n=8 DS0 on DTR

n=16 DS0 on reset

n=128 Hardware reset

ATS14=n n=1 Escape code hang up

n=2 Result code in originate mode only ATS19=n Inactivity time out in minutes ATS22=n Xon character ATS23=n Xoff character ATS24=n DSR pulse time in 1/50s of a second ATS25=n DTR recognition time in 1/10 s of a second ATS38=n Disconnect wait time in seconds ATS67=n n=2 Fix connection rate for digital calls

n=4 Connect at 64 Kbps

n=16 Enable data link delay ATS69=n n=1 Disable external Plug-and-Play

n=4 ATZ restores NVRAM settings

n=32 Enable Data Over Voice

n=128 Enable fast answer

ONNECT

Your ISDN TA reports the following messages upon connect.

AO/DI

CONNECT 9600/AODI

Asynchronous 128K

CONNECT 128000/ASYNC

Advanced Asynchronous 128K

CONNECT 128000/ADVANCED_ASYNC

PPP at 56K B-channel Rate

CONNECT 56000

PPP at 64K B-channel Rate

CONNECT 64000

V.120 at 56K B-channel Rate

CONNECT 56000/ARQ/DIGITAL/V120

V.120 at 64K B-channel Rate

CONNECT 64000/ARQ/DIGITAL/V120

ESSAGES

PECIFICATIONS

ISDN Terminal Adapter Specifications



Network Interface – Integrated Services Digital Network (ISDN)

Basic Rate telephone service provided by the telephone company



Physical Interface – U (integrated NT1)



Physical Dimensions –

Length 8.66 in. (22.0 cm) Width 5.44 in. (13.8 cm) Height 1.56 in. (4.0 cm)



Environmental Operating Range –

50to 104F (10to 50C) Relative humidity of up to 95 percent noncondensing



Power – 13/14 VDC at .8 amps



Ring Equivalence Number (REN) – Supports up to three per

Analog Device Port



EMI Certification – FCC Pa rt 15, Class B

RS-232 Port Pin Specifications

Pin # Pin Name Signal Direction

1 Shield Ground

(GND)

2 Send Data (SD) To ISDN TA

3 Receive Data (RD) From ISDN TA

4 Request to Send

(RTS)

5 Clear to Send

(CTS)

6 Data Set Ready

(DSR)

7 Signal Ground

(GND)

8 Carrier Detect

(CD)

18 Local Loopback From ISDN TA 20 Data Terminal

Ready (DTR)

To ISDN TA

From ISDN TA

To ISDN TA

21 Remote Loopback To ISDN TA 22 Ring Indicator (RI) From ISDN TA

Nine-Pin-to-25 Pin Serial Cable Specifications

DB9 Pin #

1 Carrier Detect (CD) 8

2 Receive Data (RD 3

3 Send Data (SD) 2

4 Data Terminal Ready (DTR) 20

5 Signal Ground (GND) 7

6 Data Set Ready (DSR) 6

7 Request to Send (RTS) 4

8 Clear to Send (CTS) 5

9 Ring Indicator (RI) 22

-- Shield 1

Pin Name DB25

Pin #

Macintosh Serial Cable Pin Specifications

8-Pin DIN Pin #

1 Data Terminal

2 Clear to Send

3 Send Data (SD) 2

4,8 Signal Ground

5 Receive Data

7 Data Carrier

Pin Name DB25

Ready (DTR)

(CTS)

(GND)

(RD)

Detect (DCD)

Pin #

20, 4

LOSSARY

AO/DI

Always On/Dynamic ISDN. Takes advantage of your ISDN line’s signaling channel (D-channel) to conduct low-bandwidth oper ations.

Async-Sync PPP Conversion

Asynchronous to synchronous PPP conversion. 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. Used to configure and operate your ISDN TA. These commands can be sent either automatically or manually through your communications software.

Autobaud

Automatic baud rate detection. Automatically de tects the baud rate of your computer’s serial port.

AutoSPID

If your telephone company supports this feature, AutoSPID automatically downloads telephone number and Service Profile ID information from the phone company switch.

BACP/BAP

Bandwidth Allocation Control Protocol and Bandwidth Allocation Protocol. Negotiate bandwidth allocation with the server your ISDN TA is connected to.

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. 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.

Call Drop

A supplementary voice feature that allows you to remove the last caller added to a conference.

Call Routing

Allows you to associate a specific telephone number to a specified analog port.

CHAP

Challenge Handshake Authentication Protocol. A PPP authentication protocols. An authentication protocol requests information to verify a valid user. CHAP uses encryption and may repeatedly request verification of the identity of the user any time a fter link establishment.

COM port

Communications port (also referred to as a serial port). Your ISDN TA’s communications port allows a maximum rate of 230.4 Kbps. Note that most computers’ COM ports only allow a maximum of 115.2 Kbps. However, accelerator cards can increase that rate to 230.4 Kbps.

Compression

Reducing the size of data packets without losing any information.

D-channel

The signaling channel on an ISDN line used to carry messages between your ISDN TA and the public switch.

DBA

Dynamic Bandwidth Allocation. A method of reallocating bandwidth (such as a B-channel) automatically. DBA allows you to place or receive a voice call while a MultiLink PPP call is active.

Default

Value set at the factory.

Directory Numbers

The telephone numbers for your ISDN line.

ISDN

Integrated Services Digital Network. Provides a digital telephone service that allows both data and voice communication over the same line, at significantly faster speeds than the traditional a nalog telephone service. Two types of lines provide access to ISDN: BRI and PRI.

ISDN Call Logging

Displays the five latest incoming and outgoing numbers from the data and analog ports. To log incoming calls, your ISDN line must support Caller ID.

ISDN Call Waiting

Allows you to place a voice or data call on hold while you answer an incoming voice call. ISDN Call Waiting requires Additional Call Offering on your ISDN line.

Kbps

Kilobits per second. The rate at which data is transmitted between communication equipment.

Layer 1

The physical layer of communication between the communication equipment. If layer 1 is down, there is no ISDN connection between the devices.

MultiLink PPP

Provides a method of combining multiple PPP connections. With a BRI line, MultiLink PPP aggregates the two 56 Kbps or 64 Kbps ISDN Bchannels, creating a virtual single digital connection of up to 128 Kbps.

National ISDN

An ISDN standard to create 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 b uilt into your ISDN TA.

PAP

Password Authentication Protocol. An authentication protocol that requests information to verify a valid user. PAP requests the user’s name and password for verification.

PPP

Point-to-Point Protocol. Provides a standard method of transmitting data over the Internet. PPP is used for communication between a computer and an Internet Service Provider.

PRI

Primary Rate Interface. One of two access methods to the ISDN. In North America, each PRI consists of 23 64-Kbps B-channels and one 64-Kbps D-channel.

QuickSelect

Automatically detects and uses the protocol required for a digital call.

SPID

Service Profile Identifier. If required, this number is supplied to you by the telephone company. Typically, if your ISDN line has only one telephone number, a SPID is not required.

SPID Wizard

Using your ISDN TA’s telephone numbers, SPID Wizard automatically detects the type of ISDN switch that your TA is connected to and determines the Service Profile IDs.

TollMizer

Allows you to place a data call over a voice channel, saving the extra cost of the data channel. Your telephone company, ISP, and the device into which you are calling must all support this feature.

V.120

A rate adaption scheme that converts transmissio n rates from a range of 300 bps to 115.2 Kbps to the B-channel’s 56 Kbps or 64 Kbps rate. V.120 is used for communication between two computers.

Us robotics ISDN Terminal Adapter User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual