AT&T DataPort PCX Modem User manual

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read Paradyne
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AREA CODE CHANGE
Please note that the area
code for Paradyne
Corporation in Largo,
Florida has changed from
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For any Paradyne
telephone number that
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with an 813 area code,
dial 727 instead.

3705-A2-GB90-10
Issue 2
July 1995
DataPort PCX Modem
User’s Guide
AT&T Paradyne Technical Support 800-237-0016
AT&T Paradyne BBS 813-532-5254

AIssue 2 July 1995
COPYRIGHT E 1995 AT&T Paradyne Corporation*
All Rights Reserved
Notice
Changes and enhancements to the product and to the information herein will be
documented and issued as a new release of this manual.
A customer opinion card is provided with this publication and your comments are
appreciated. If the form has been removed, address comments to AT&T Paradyne
Corporation, Technical Publications, 8545 126th Ave. N., P.O. Box 2826, Largo,
Florida, 34649-2826. AT&T Paradyne may use or distribute any of the information
supplied, as appropriate, without incurring any obligation whatsoever.
This publication is protected by federal copyright law. No part of this publication may
be copied or distributed, transcribed, stored in a retrieval system, or translated into
any human or computer language in any form or by any means, electronic,
mechanical, magnetic, manual or otherwise, or disclosed to third parties without the
express written permission of AT&T Paradyne Corporation, 8545 126th Ave. N.,
P.O. Box 2826, Largo, Florida 34649-2826.
AT&T Paradyne Corporation makes no representation or warranties with respect to
the contents hereof and specifically disclaims any implied warranties of
merchantability or fitness for a particular purpose. Further, AT&T Paradyne
Corporation reserves the right to revise this publication and to make changes from
time to time in the contents hereof without obligation of AT&T Paradyne Corporation
to notify any person of such revision or changes.
Mandatory Customer Information
DataPort PCX Modem
FCC Registration number: See label on modem
Ringer Equivalence number (REN): See label on modem
Canadian Certification number: See label on modem
Canadian DOC Load number: See label on modem
The Universal Service Order Code (USOC) for Permissive mode is RJ11C. The
Canadian equivalent to the USOC is CA11A.
Warranty
AT&T Paradyne provides a limited warranty to this product. Refer to Appendix F,
Limited Warranty , for more information.
*
AT&T Paradyne is a member of AT&T’s Multimedia Products and Services group.

Important Regulatory Information
B
Issue 2 July 1995
Trademarks
America Online is a trademark of American Online, Inc.
BitCom and BitFax are registered trademarks of Bit Software, Inc.
COMit is a trademark of Tradewind Software, Inc.
CompuServe is a trademark of CompuServe Inc.
COMSPHERE is a registered trademark of AT&T.
DataCOMM and DataFAX are trademarks of Trio Information Systems, Inc.
DataPort is a trademark of AT&T.
ExpressFax is a trademark of Novell, Inc.
FaxTalk is a registered trademark of Thought Communications, Inc.
GEnie is a service mark of General Electric Corporation.
Hayes is a registered trademark of Hayes Microcomputer Products, Inc.
IBM is a registered trademark of International Business Machines Corporation.
MacComCenter is a trademark of Smith Micro Software, Inc.
Microsoft and MS-DOS are registered trademarks of Microsoft Corporation.
MNP is a registered trademark of Microcom, Inc.
PROCOMM is a registered trademark of DATASTORM TECHNOLOGIES, INC.
QuickLink II Fax is a trademark of Smith Micro Software, Inc.
Reuters is a registered service mark of Reuters, Limited.
RPI is a trademark of Rockwell International Corporation.
SuperVoice is a registered trademark of Pacific Image Communications, Inc.
UNIX is a registered trademark of Novell in the United States and other countries,
licensed exclusively through X/Open Company Limited.
VODAX is copyrighted software of Tapmon, Inc.
WinComm is a trademark of Delrina (Delaware) Corporation.
Windows is a trademark of Microsoft Corporation.
WinFax PRO is a trademark of Delrina (Canada) Corporation.
All other product names are copyrighted and registered trademarks of their
respective owners.

Important Regulatory Information
CIssue 2 July 1995
EMI Warnings
!WARNING:
This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the
instruction, may cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on. The user is
encouraged to try to correct the interference by one or more of the following
measures:
G Reorient or relocate the receiving antenna.
G Increase the separation between the equipment and receiver.
G Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
G Consult the dealer or an experienced radio/TV technician for help.
The authority to operate this equipment is conditioned by the requirement
that no modifications will be made to the equipment unless the changes or
modifications are expressly approved by AT&T Paradyne.
!WARNING:
This Class B digital apparatus meets all the requirements of the Canadian
Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe B respecte toutes les exigences du
Règlement sur le matériel brouilleur du Canada.
  
1. Read and follow all warning notices and instructions marked on the product
or included in the manual.
2. Slots and openings in the cabinet are provided for ventilation. To ensure
reliable operation of the product and to protect it from overheating, these
slots and openings must not be blocked or covered.
3. Do not allow anything to rest on the power cord and do not locate the
product where persons will walk on the power cord.
4. Do not attempt to service this product yourself, as opening or removing
covers may expose you to dangerous high voltage points or other risks.
Refer all servicing to qualified service personnel.

Important Regulatory Information
D
Issue 2 July 1995
5. General purpose cables are provided with this product. Special cables,
which may be required by the regulatory inspection authority for the
installation site, are the responsibility of the customer.
6. When installed in the final configuration, the product must comply with the
applicable Safety Standards and regulatory requirements of the country in
which it is installed. If necessary, consult with the appropriate regulatory
agencies and inspection authorities to ensure compliance.
7. A rare phenomenon can create a voltage potential between the earth
grounds of two or more buildings. If products installed in separate buildings
are interconnected, the voltage potential may cause a hazardous
condition. Consult a qualified electrical consultant to determine whether or
not this phenomenon exists and, if necessary, implement corrective action
prior to interconnecting the products.
In addition, if the equipment is to be used with telecommunications circuits, take
the following precautions:
– Never install telephone wiring during a lightning storm.
– Never install telephone jacks in wet locations unless the jack is
specifically designed for wet locations.
– Never touch uninsulated telephone wires or terminals unless the
telephone line has been disconnected at the network interface.
– Use caution when installing or modifying telephone lines.
– Avoid using a telephone (other than a cordless type) during an
electrical storm. There may be a remote risk of electric shock from
lightning.
– Do not use the telephone to report a gas leak in the vicinity of the leak.
Government Requirements and Equipment Return
Certain governments require that instructions pertaining to modem connection to
the public switched telephone network be included in the installation and
operation manual. Specific instructions are listed in the following sections.
United States
Notice to Users of the Public Switched Telephone Network
1. This equipment complies with Part 68 of the FCC rules. On the equipment is
a label that contains, among other information, the FCC registration number
and ringer equivalence number (REN) for this equipment. If requested, this
information must be provided to the telephone company.
2. The Universal Service Order Code (USOC) associated with the services the
equipment is to be connected is RJ11C.

Important Regulatory Information
EIssue 2 July 1995
3. The Ringer Equivalence Number (REN) is used to determine the quantity of
devices which may be connected to the telephone line. Excessive RENs on
the telephone line may result in the devices not ringing in response to an
incoming call. In most, but not all areas, the sum of the RENs should not
exceed five (5.0). To be certain of the number of devices that may be
connected to the line, as determined by the total RENs, contact the
telephone company to determine the maximum RENs for the calling area.
4. If the modem causes harm to the telephone network, the telephone
company will notify you in advance that temporary discontinuance of service
may be required. But if advance notice is not practical, the telephone
company will notify the customer as soon as possible. Also, you will be
advised of your right to file a complaint with the FCC if you believe it is
necessary.
5. The telephone company may make changes in its facilities, equipment,
operations, or procedures that could affect the operation of the equipment. If
this happens, the telephone company will provide advance notice in order
for you to make the necessary modifications in order to maintain
uninterrupted service.
6. If you are experiencing technical difficulties with your modem, please try to
verify the problem before contacting AT&T Paradyne technical assistance.
AT&T Paradyne technical support is available by calling
1-800-237-0016 (or 1-813-531-4373).
If you still experience trouble with your modem within the first 30 days of
purchase, return it to its place of purchase. After 30 days, contact AT&T
Paradyne technical support for product return information and a Return
Material Authorization (RMA) number. Do not return the product without an
RMA number.
To return your modem, prepare a note with the following information:
Your Name (or Company)
Address for Return Shipment and Telephone Number
Contact Name (if different from above)
Billing Address (if different from above)
Purchase Order Number Associated with the Equipment
Brief Description of the Problem
RMA Number
Package the modem carefully for shipping, including the note containing the
necessary information. Mark the package to the attention of the Repair
Center, and send it to the address below:
AT&T Paradyne
8550 Ulmerton Road
Largo, Florida 34641
Attn: Repair Center, Bldg. B
For warranty information, refer to Appendix F.
If the trouble is causing harm to the telephone network, the telephone
company may request you remove the equipment from the network until the
problem is resolved.
7. No repairs may be made by the end use customer.

Important Regulatory Information
F
Issue 2 July 1995
8. This modem cannot be used on public coin service provided by the
telephone company. Connection to Party Line Service is subject to state
tariffs. (Contact the state public utility commission, public service
commission or corporation commission for information.)
9. The Telephone Consumer Protection Act of 1991 makes it unlawful for any
person to use a computer or other electronic device to send any message
via a telephone fax machine unless such message clearly contains in a
margin at the top or bottom of each transmitted page or on the first page of
the transmission, the date and time it is sent and an identification of the
business or other entity, or other individual sending the message and the
telephone number of the sending machine of such business, or other entity,
or individual. To program this information, follow the steps outlined in the
manual supplied with your fax software.
10. An FCC compliant telephone cord with modular plugs is provided with this
equipment. This equipment is designed to be connected to the telephone
network or premises wiring using a compatible modular jack which is Part 68
compliant.
Canada
Notice to Users of the Canadian Public Switched Telephone Network
The Canadian Department of Communications label identifies certified
equipment. This certification means that the equipment meets certain
telecommunications network protective, operational and safety requirements.
The Department does not guarantee the equipment will operate to the user’s
satisfaction.
Before installing this equipment, users should ensure that it is permissible to be
connected to the facilities of the local telecommunications company. The
equipment must also be installed using an acceptable method of connection. In
some cases, the company’s inside wiring associated with a single line individual
service may be extended by means of a certified connector assembly (telephone
extension cord). The customer should be aware that compliance with the above
conditions may not prevent degradation of service in some situations.
Repairs to certified equipment should be made by an authorized Canadian
maintenance facility designated by the supplier. Any repairs or alterations made
by the user to this equipment, or equipment malfunctions, may give the
telecommunications company cause to request the user to disconnect the
equipment.
Users should ensure for their own protection that the electrical ground
connections of the power utility, telephone line and internal metallic water pipe
system, if present, are connected together. This precaution may be particularly
important in rural areas.

Important Regulatory Information
GIssue 2 July 1995
!CAUTION:
Users should not attempt to make such connections themselves, but should
contact the appropriate electric inspection authority, or electrician, as
appropriate.
The Load Number (LN) for this equipment is shown on the label on the modem.
The Load Number assigned to each terminal device denotes the percentage of
the total load to be connected to a telephone loop which is used by the device to
prevent overloading. The termination on a loop may consist of any combination
of devices subject only to the requirement that the total of the Load Numbers of
all devices does not exceed 100.
Canadian customers, if your equipment is in need of repair within the first
30 days of purchase, return it to its place of purchase. If repairs are needed after
30 days, call 800-237-0016 (or 813-531-4373) or arrange to have your
equipment repaired by contacting Inventory Control Office, 100 York Blvd.,
Suite 200, Richmond Hill, Ontario L4B 1J8, telephone [phone].
For the internal modem, the following cautions apply.
!CAUTION:
This modem card is intended to be installed in UL Listed/CSA Certified
equipment in the field by the user in the manufacturer’s defined operator
access area. Check the equipment operating/installation instructions and/or
equipment manufacturer to verify/confirm if your equipment is suitable for
user-installed application cards.
!CAUTION:
Cette carte modem est destinée à être installée par l’utilisateur, sur place et
à l’interieur de la zone definie par la fabricant, dans un appareil certifié CSA.
Consulter le mode d’emploi ou le fabricant de l’appareil pour vérifier ou
confirmer si l’utilisateur peut y installer lui-même des cartes périphériques.
!CAUTION:
Always disconnect modem board (the one with the telephone plug/jack) from
telephone system when installing or when covers are removed from the host
product.
!CAUTION:
Toujours débrancher la ligne téléphonique de la carte modem (munie d’une
prise ou d’une fiche) avant de proceder à l’installation dans l’appareil ou
lorsque le couvercle de celui-ci est retiré.

i
Issue 2 July 1995
Contents
1Introduction
G Features 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
G Important Telephone Numbers 1-2. . . . . . . . . . . . . . . . . . . . . .
2External Modem Installation
G External DataPort PCX Modem Package 2-1. . . . . . . . . . . . .
Required Equipment 2-1. . . . . . . . . . . . . . . . . . . . . . . . .
G External DataPort PCX Modem Installation 2-2. . . . . . . . . . .
3Internal Modem Installation
G Internal DataPort PCX Modem Package 3-1. . . . . . . . . . . . .
Required Equipment 3-1. . . . . . . . . . . . . . . . . . . . . . . . .
G Internal DataPort PCX Modem Installation 3-2. . . . . . . . . . . .
COM Port and IRQ Configuration 3-2. . . . . . . . . . . . . .
Installation Procedure 3-3. . . . . . . . . . . . . . . . . . . . . . . .
4Testing Your Modem
G Software Installation Overview 4-1. . . . . . . . . . . . . . . . . . . . . .
G Testing Your Connections 4-2. . . . . . . . . . . . . . . . . . . . . . . . . .
Modem Connection Test 4-2. . . . . . . . . . . . . . . . . . . . . .
Dial-Line Connection Test 4-3. . . . . . . . . . . . . . . . . . . . .
G About WinRPI 4-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
G Software Setup 4-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5Using AT Commands
G AT Command Guidelines 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . .
Entering AT Commands Using Quick Link II Fax 5-2.
6Troubleshooting
Configuration Problems 6-1. . . . . . . . . . . . . . . . . . . . . . .

ii Issue 2 July 1995
Power Problems 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Command Echo Problems 6-2. . . . . . . . . . . . . . . . . . . .
Dial Problems 6-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Answer Problems 6-4. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connect Problems 6-4. . . . . . . . . . . . . . . . . . . . . . . . . . .
Disconnect Problems 6-5. . . . . . . . . . . . . . . . . . . . . . . . .
File Transfer Problems 6-6. . . . . . . . . . . . . . . . . . . . . . .
Character Format Problems 6-7. . . . . . . . . . . . . . . . . . .
Rate and Protocol Problems 6-8. . . . . . . . . . . . . . . . . .
Fax Problems 6-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AFront Panel Status Lights
BAT Commands and S-Registers
CCommunications and Fax Software Settings
G Guidelines for All Software C-1. . . . . . . . . . . . . . . . . . . . . . . . .
G Guidelines for Specific Software C-4. . . . . . . . . . . . . . . . . . . .
DTechnical Specifications
EResult Codes
FLimited Warranty
GL Glossary
IN Index

1-1
Issue 2 July 1995
Introduction
1
Congratulations on your purchase of the AT&T DataPort t PCX
modem. DataPort PCX modems support high-speed data
communications as well as Class 1 fax (Group III). There are
two models:
3705 V.32bis External
3706 V.32bis Internal
Features
DataPort PCX modems have the following features:
G Dial line (modem to modem) rates from 14,400 bps to
75 bps
G CCITT V.17 (14,400 bps), V.29 (9600 bps), and V.27ter
(4800 bps) fax modulations
G DTE Data (modem to computer) rates from 57,600 bps to
300 bps
G CCITT V.42 and MNP r 4–2 error control protocols, and
CCITT V.42bis and MNP 5 data compression protocols
using software that supports RPI t , such as
QuickLink II Fax t
G COM 1–4 and IRQ 2–5 selections (internal models)
G On-board 16550A-compatible UART (internal models)
G Free QuickLink II Fax communications and fax software
and documentation
G Five-year warranty

Introduction
1-2 Issue 2 July 1995
Important Telephone Numbers
AT&T Paradyne offers a dial-in Bulletin Board System (BBS) that
provides information on DataPort modems, including
documentation updates and software initialization strings. The
telephone number for the BBS is 1-813-532-5254.
Smith Micro Software, the maker of QuickLink II Fax, maintains
a BBS at 1-714-362-5822.
If you would like to order other AT&T Paradyne products, dial
1-800-554-4996 to talk to a sales representative.
If you wish to speak directly to a Technical Support
representative, dial 1-800-237-0016 (or 1-813-531-4373),
Monday through Saturday, between 8 am and Midnight, Eastern
time. So that we may assist you better, please have your PC and
modem powered on, and be prepared to tell us the following:
G The model number and serial number of your modem
G The date you purchased your modem
G The type of PC and software you are using
Please contact Technical Support if you believe there is a flaw in
your modem.
If the modem needs to be returned within the first 30 days of
purchase, then return it to the place of purchase.
If it is necessary for you to return your modem after 30 days,
Technical Support will provide you with a Return Material
Authorization (RMA) number. Do not return a product without an
RMA number. See Step 6 of the
Government Requirements and
Equipment Return
section (on page E in the front of this book)
for return information.
Model Number __________________ (3705 or 3706)
Serial Number __________________
Date Purchased __________________

2-1
Issue 2 July 1995
  
2
This chapter describes how to install an external DataPort PCX
modem (Model 3705).
External DataPort PCX
Modem Package
Your package contains the following:
G One DataPort PCX standalone external modem.
G One modular 6-foot RJ11 telephone cord.
G One 110 vac power transformer.
G QuickLink II Fax software diskette and user’s guide.
G This User’s Guide and a Warranty Card. A technical
information update sheet may also be included.
Required Equipment
For normal operation, you must provide the following:
G An RJ11 telephone outlet.
G A 110 vac wall outlet.
G A shielded RS-232 serial cable with a male 25-pin
(DB25P) connector to connect to the modem, and either
a 25- or 9-pin serial connector to connect to the PC.
(Check your PC serial connector.)
G A telephone with an RJ11 modular telephone cord (if you
wish to use the same outlet for modem and voice calls).
G An IBM-compatible PC. It should have 386 20 MHz or
faster processor for best results.

External Modem Installation
2-2 Issue 2 July 1995
External DataPort PCX
Modem Installation
Turn OFF the computer and disconnect the power cord. Be
sure the modem is in a space large enough for good ventilation.
Install using the figure below.
!CAUTION:
Use only the power supply that came with your modem.
Your modem needs a serial cable to connect it to your
computer. One end must
have a 25-pin plug,
and the other end must
have a socket that
matches the
modem port on
your computer.
This is a 25-pin
or a 9-pin
connector.
Plug the serial
cable into
your modem.
Plug the serial
cable into the
serial port
of your PC.
Plug your phone
into the modem
jack marked
PHONE.
Plug one end of the line
cord (included with your
modem) it into the
modem jack marked
LINE.
Plug the other end of the line
cord into your telephone wall
outlet.
Plug the
small power
connector
into the
modem
jack marked
POWER.
Plug the
transformer
at the other end
of the power cord
into a 110 Vac
power outlet.
Turn on your
modem and
your PC.
495-14657
Go to Chapter 4, Testing Your Modem, to verify your installation.

3-1
Issue 2 July 1995
  
3
This chapter describes how to install an internal DataPort PCX
modem (Model 3706).
Internal DataPort PCX
Modem Package
Your package contains the following:
G One internal DataPort PCX modem.
G One RJ11 modular 6-foot telephone cord.
G QuickLink II Fax software diskette and user’s guide.
G This User’s Guide and Warranty Card. A technical
information update sheet may also be included.
Required Equipment
The internal version of the DataPort PCX modem can be
installed only in an IBM-compatible personal computer. For
proper operation, you must provide the following:
G An available 8-bit or 16-bit expansion slot within the PC.
G An available COM port (modem supports COM ports 1–4
and IRQs 2–5).
G An RJ11 telephone outlet.
G A telephone with an RJ11 modular telephone cord (if you
wish to use the same outlet for both modem and voice
calls).
G An IBM-compatible PC. It should have 386 20 MHz or
faster processor for best results.

Internal Modem Installation
3-2 Issue 2 July 1995
Internal DataPort PCX
Modem Installation
Use the following procedure to install your modem into an
IBM-compatible PC. Review the entire procedure before
beginning to install your modem, and do not remove the modem
from its protective anti-ESD (electrostatic discharge) bag until
you are ready to place it into your PC.
COM Port and IRQ Configuration
COM port configuration is often the cause of much confusion
when installing internal modems. Before attempting to install
your internal DataPort PCX modem, verify which COM ports are
available on your PC by running the COMTEST program
provided on the QuickLink II Fax diskette.
Select the diskette labeled QuickLink II Fax and insert it into
your floppy drive.
You can run the COMTEST program from DOS or Windows. To
run from DOS, type at the command prompt. To run from
Windows, select Run from the Program Manager File menu and
type in the Command Line window.
TYPE: a:\comtest (or b:\comtest if you
are using your b: drive)
PRESS: Enter (or Return)
The COMTEST program recommends COM port and IRQ
settings appropriate for your PC.
The DataPort PCX modem is shipped from the factory
configured for COM port 1 (COM1) and interrupt 4 (IRQ4). If
those settings are already in use in your computer, the
COMTEST program recommends different settings. Make a note
of the recommended settings so you can change the modem
switches before you install the modem.

Internal Modem Installation
3-3
Issue 2 July 1995
Installation Procedure
1. Turn Off your PC, and unplug it.
Also turn off all attached devices, such as monitors and
printers.
!WARNING:
Failure to turn Off the computer while installing or removing
the modem could harm you and/or damage the equipment.
2. Remove the PC’s cover according to the manufacturer’s
directions.
495-1466
0
3. Select an available expansion slot.
If there is already a modem in your PC, remove it and use
the same slot. To use a new slot, remove the screw that
holds the slot cover (metal bracket) in place. Remove the
slot cover but retain the screw.
4. Ground yourself by touching the PC’s chassis before
removing the modem from its shipping bag.
!CAUTION:
The DataPort PCX modem is shipped from the factory in an
anti-ESD (electrostatic discharge) bag. This is to protect the
modem from any static electricity which is very harmful to
electronic equipment. Do not remove the modem from the
anti-ESD bag until you are ready to install it. Next, ground
yourself by touching the PC’s chassis before removing the
modem from its protective anti-ESD bag.

Internal Modem Installation
3-4 Issue 2 July 1995
5. Remove the modem from its shipping bag.
!CAUTION:
Do not touch the contacts along the bottom edge or any
components on the modem. Handle the modem only by its
outer edges.
Keep the ESD bag in case the modem must be removed or
returned for service.
6. Verify that the modem’s switch settings are configured
for the correct COM port. See Figure 3-1 and Table 3-1.
Configure the switches for the COM port/IRQ settings
recommended by the COMTEST program you ran before
installation. If you change the switches, remember the new
settings for when you install your communications software.
Use a small pointed object, such as a pen tip, to change
switches. Table 3-1 lists switch settings for each COM port.
Refer to the documentation for your PC to verify if any
jumpers or switches within the PC should be changed.
Figure 3-1. COM Port Switch Location

Internal Modem Installation
3-5
Issue 2 July 1995
Table 3-1. COM Port and Interrupt Settings
COMPort/IRQ Address Pos 1 Pos 2 Pos 3 Pos 4 Pos 5 Pos 6
COM1/IRQ4 3F8-3FF ON ON Off Off ON Off
COM2/IRQ3 2F8-2FF Off ON Off ON Off Off
COM3/IRQ4 3E8-3EF ON Off Off Off ON Off
COM4/IRQ3 2E8-2EF Off Off Off ON Off Off
COM3/IRQ2 3E8-3EF ON Off ON Off Off Off
COM4/IRQ2 2E8-2EF Off Off ON Off Off Off
COM3/IRQ5 3E8-3EF ON Off Off Off Off ON
COM4/IRQ5 2E8-2EF Off Off Off Off Off ON
Bold indicates factory setting.
7. Carefully insert the modem card into the expansion slot
and fasten the metal bracket.
Hold the modem so that the bracket with the phone jacks
faces the rear of the PC. Press down until the contacts along
the bottom edge of the modem are seated firmly in the
expansion slot connector. Fasten the bracket with the screw
that was removed in Step 3.
8. Replace the cover on the PC.
9. Connect the line cord. See Figure 3-2. Plug one end of the
modular telephone cord into the connector labeled LINE.
10. Connect a telephone. Plug the line cord of your telephone
into the modular connector labeled PHONE. A telephone is
not required for modem operation.
11. Plug in and turn on your PC and continue with
Chapter 4,
Testing Your Modem , to verify your
installation.
!WARNING:
In the future, any time you remove the cover of your PC, first
ensure that the telephone line cord has been detached from
the modem.