Zoom 2812 User manual

56K Owner’s Manual
56Kbps/V.34 Data with 14.4Kbps Fax

NOTICE
This document contains proprietary information protected
by copyright, and this Owner’s Manual and all the accom-
panying hardware are copyrighted. All rights are reserved.
No part of this document may be photocopied or
reproduced by mechanical, electronic, or other means in
any form, except for the personal use of the owner.
The manufacturer does not warrant that the hardware will
work properly in all environments and applications.
Although the hardware has been tested, the manufacturer
makes no warranty and representation, either implied or
expressed, with respect to the hardware and the documen-
tation, quality, performance, merchantability, or fitness for
a particular purpose. The manufacturer reserves the right
to make changes to the hardware and Owner’s Manual
content without obligation to notify any person or
organization of the revision or change.
All brand and product names are the trademarks of their
respective owners.
Copyright 1997
All rights reserved.

iii
Contents
INTRODUCTION..........................................................5
WHAT YOU NEED TO USE YOUR FAXMODEM .........................6
DOCUMENTATION CONVENTIONS..........................................7
CHAPTER 1 INSTALLATION....................................... 8
INSTALLING AN EXTERNAL FAXMODEM ..................................8
INSTALLING AN INTERNAL FAXMODEM .................................12
Installing an Internal Card in Your Computer.............12
SETTING UP YOUR FAXMODEM FOR WINDOWS 95................15
PROBLEMS WITH PLUG AND PLAY SETUP .............................16
Using the Hardware Conflict Wizard..........................16
Changing the COM settings in BIOS ..........................17
SETTING UP YOUR INTERNAL FAXMODEM WITH
SOFTWARE UNDER WINDOWS 3.1 OR 3.11.........................19
A Note About IRQs and Conflicts ...............................20
SETTING UP YOUR INTERNAL FAXMODEM WITH JUMPERS ......22
For MS-DOS Users ....................................................22
For Windows 3.1 or 3.11 Users.................................23
For Windows NT Users..............................................23
CHAPTER 2 USING THE FAXMODEM ......................25
USING FAX AND DATA COMMUNICATIONS SOFTWARE ............25
Tips for Selecting Setup Options ................................25
INITIALIZATION STRINGS....................................................26
USING AT COMMANDS.....................................................27
RETURNING TO THE FACTORY SETTINGS..............................29
CHAPTER 3 PROBLEMS AND SOLUTIONS ...............30
GENERAL TROUBLESHOOTING ...........................................31
ECHO TROUBLESHOOTING ................................................34
DIAL TROUBLESHOOTING..................................................34
ON-LINE TROUBLESHOOTING.............................................35
APPENDIX A: 56K – QUESTIONS & ANSWERS .......... 40
APPENDIX B: PRODUCT SUMMARY..........................42
APPENDIX C: PRODUCT SPECIFICATIONS ...............44

iv
APPENDIX D: JUMPER SETTINGS FOR
INTERNAL MODEMS................................................. 45
JUMPER BLOCK LOCATIONS ..............................................45
FOR WINDOWS 95 USERS ................................................46
FOR WINDOWS NT AND OTHER NON-PNP USERS ................46
PORT AND IRQ SETTINGS .................................................47
APPENDIX E: AT COMMANDS...................................48
APPENDIX F: S REGISTERS......................................55
APPENDIX G: RESULT CODES.................................. 59
APPENDIX H: REGULATORY INFORMATION.............62
FCC PART 68 TELECOMMUNICATIONS STATEMENT...............62
INDUSTRY CANADA ATTACHMENT .......................................63
CANADIAN EMISSIONS STATEMENT .....................................64
INDEX ......................................................................65

Introduction 5
Introduction
Congratulations! Your 56K Faxmodem is a powerful, flexi-
ble tool that will help you manage your communications,
work more efficiently, and present a polished and profes-
sional image at home or at the office.
This product includes high-speed data and fax capability
with the ability to receive data from compatible central
sites at speeds up to 56 Kbps, and even higher rates
using data compression.
As discussed in Appendix A, your faxmodem’s ability to
achieve speeds above 33,600 bps depends on your calling
a compatible central site such as a compatible Internet
Service Provider (ISP), online service, or corporate net-
work. It also depends on the characteristics of the phone
line connecting your modem to the local telephone office.
Your 56K Faxmodem can also perform as a top-of-the-line
V.34 data and fax modem, operating at speeds up to 33.6
Kbps.
This manual is primarily an installation, troubleshooting,
and reference guide. Once you have successfully installed
the modem in your IBM PC-compatible computer,
software controls virtually all access to the fax and data
product features.
While many data communications features can be con-
trolled using AT commands and S registers, there is
rarely any reason to do so. The software shipped with this
product allows you to change your modem’s configuration
and to control the communications features easily.
Summaries of AT commands and S registers have been
included in this manual primarily for programmers and in
the interest of tradition and completeness.
The use of AT commands and S registers is neither re-
quired nor recommended for the average user.

656K Faxmodem Owner’s Manual
This owner’s manual is organized as follows:
Introduction (this section) lists the items you will need
to use the modem.
Installation (Chapter 1) explains how to install the modem.
Using the Faxmodem (Chapter 2) provides tips for
setting up your software.
Problems and Solutions (Chapter 3) provides
information to assist you if you have problems.
The Appendixes provide additional information for a
number of topics including tables that summarize AT
commands and S registers.
Follow the Quick Start guide’s instructions for quick in-
stallation of the hardware and software that is included
with this product. If you have questions that are not an-
swered in the Quick Start guide, follow the instructions
provided with your fax and data communications software
to install and use those programs.
What You Need to Use Your Faxmodem
Make sure that you have received the following
items:
• Faxmodem
• Phone cord
• Power adapter (for external models only)
• Fax and data communications software on floppy
disks. These floppies also contain some helpful
installation utilities for non-Plug and Play systems.
To use the faxmodem, you also need the
following:
• For internal models, a computer with an available
IBM PC-compatible 16-bit ISA or EISA Bus slot.
• For external models, an available serial port (also
called an RS-232 port, COM port, or modem port).

Introduction 7
• A serial cable with hardware flow control (external
model only).
• A telephone line connection (typically, a wall-mounted
telephone jack or socket) that lets you plug in a
single-line telephone.
• A tool, if necessary, for removing and putting back the
computer cover (internal model only). (See your
computer’s manual.)
Documentation Conventions
• In this manual we may use the terms “faxmodem,”
“modem,” and “product” interchangeably.
Occasionally you may find that other manuals use the
term “modem board” or “card” to refer to the modem.
• Commands and command examples described in this
guide appear in bold type. For example: To reset the
modem, type ATZ and press Enter.
• Occasionally we insert spaces between commands to
make a command line easier to read. You can type the
command line with or without spaces between
commands as long as the command line does not
exceed 40 characters.
• “0” in a command line indicates the number zero, not
the letter “O”.

856K Faxmodem Owner’s Manual
Chapter 1 Installation
This chapter explains how to install external and internal
faxmodems.
Installing an External Faxmodem
To connect the external faxmodem
Turn off the computer.
Connect the faxmodem-to-computer cable. Plug one
end of the cable into the wide connector on the back
of the faxmodem. Plug the other end into the serial
port in the back of your computer.
Connect the telephone cord. Plug one end of the
cord provided with the modem into the PHONE LINE
jack on the back of the faxmodem. Plug the other end
into the telephone line connection (typically mounted
on a wall), just as you would a standard telephone.
You can plug a telephone into the faxmodem’s other
jack, marked PHONE. The faxmodem works with or
without a telephone connected to it.
Connect the power adapter. Plug one end of the
power adapter into the back of the faxmodem. Plug
the other end into an available electrical outlet. You
can leave the power adapter plugged in when you are
not using the faxmodem.
1
2
3
4

Chapter 2 Using the Faxmodem 9
TELEPHONE
(OPTIONAL)
TELEPHONE LINE
COMPUTER
POWER
CONNECTION
Turn the computer back on.
Turn the faxmodem on by pushing in the power
button on the front, as shown in the illustration
below.
The modem performs a brief self-test.
After the self-test, the front panel status lights or
LEDs show the faxmodem’s current state. The MR
light should be on, which shows the faxmodem is
ready for use.
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6

10 56K Faxmodem Owner’s Manual
Now you can install your fax and data communica-
tions software. Follow the instructions provided with
the enclosed software, and turn to Chapter 2.