AT&T 7400B Plus User Manual
AT&T 555-020-710
Issue 2
May 1991
7400B Plus Data Module
User’s Guide
Page 1
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
NOTICE
While reasonable efforts were made to ensure that the information in this document was complete and
accurate at the time of printing, AT&T can assume no responsibility for any errors. Changes or corrections
to the information contained in this document may be incorporated into future reissues.
TO ORDER COPIES OF THIS MANUAL
Call: AT&T Customer Information Center on 800-432-6600
In Canada Call 800-255-1242
Write: AT&T Customer Information Center
2855 North Franklin Road
P.O. Box 19901
Indianapolis, Indiana 46219
Order: Document No. 555-020-710 Issue 2, May 1991
For more information about AT&T documents, see Business Communications Systems Publications Catalog
(555-000-010).
FCC NOTICE
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation of this equipment
in a residential area is likely to cause harmful interference in which case the user will be required to correct
the interference at his own expense.
TRADEMARK NOTICE
Apple and the Apple Logo are registered trademarks of Apple Computer, Inc. Carbon Copy Plus is a
registered trademark of MicroCom. CROSSTALK is a registered trademark of Digital Communications
Associates. DEFINITY is a trademark of AT&T. Delphi is a registered trademark of General Videotex
Corporation. Dow Jones News is a registered trademark of Dow Jones & Company, Inc. Hayes is a
registered trademark of Hayes Microcomputer Products, Inc. Hot Line is a registered trademark of General
Information, Inc. HyperACCESS is a registered trademark of Hilgraeve, Inc. LEXIS/NEXIS are registered
trademarks of Mead Data Central, Inc. Macintosh is a trademark of McIntosh Laboratory, Inc. MicroPhone
is a trademark of Software Ventures Corporation. Microsoft and MS-DOS are registered trademarks of
Microsoft Corporation. Newsnet is a registered trademark of Newsnet, Inc. Official Airline Guide is a
registered trademark of the Reuben H. Donnelley Corporation. PC TOOLS is a registered trademark of
Central Point Software, Inc. PROCOMM is a registered trademark of Datastorm Technologies, Inc. RELAY
GOLD is a registered trademark of Relay Communications, Inc. SIDEKICK Plus is a registered trademark of
Borland International, Inc. Smartcom is a registered trademark of Hayes Microcomputer Products, Inc.
Smarterm is a registered trademark of Persoft, Inc. Smartmodem is a trademark of Hayes Microcomputer
Products, Inc. Terra Nova is a registered trademark of AT&T. White Knight is a trademark of The FreeSoft
Company.
Prepared by 1991 AT&T
AT&T Technical Publications Department All Rights Reserved
Middletown, New Jersey 07748 Printed in U.S.A.
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Contents
PREFACE: ABOUT THIS GUIDE
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Typographical Conventions i
Organization of This Guide i
Related Documentation ii
1 CHAPTER 1: INTRODUCTION
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Overview 1-1
Features 1-2
Physical Description 1-4
2 CHAPTER 2: INSTALLATION
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Hardware and Software Requirements 2-1
Hardware Installation 2-10
Initial System Checks 2-16
If You Are Using a PC 2-16
If You Are Using a Dedicated Terminal 2-17
3 CHAPTER 3: CONFIGURATION AND OPERATION
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Operating Modes 3-1
Issuing Commands 3-2
Configuration Parameters 3-6
Data Operation 3-8
Voice Operations 3-16
4 CHAPTER 4: PC APPLICATIONS
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Data Call Notes 4-1
Voice Dialing Notes 4-1
PC COMMUNICATIONS PACKAGES 4-2
Carbon Copy Plus - V 5.1 4-3
Crosstalk XVI - V3.71 4-7
Crosstalk Mk.4 - V1.1 4-10
Hot Line - V2.2 4-15
HyperACCESS - V3.32 4-19
MicroPhone - V1.5 4-26
PC Tools Deluxe - V 6 4-30
Procomm Plus - V 1.1B 4-33
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Relay Gold - Release 3.0 4-37
SideKick Plus 4-40
Smartcom II - prior to Version 3.1 4-43
Smartcom II - V 3.1 4-49
Smartcom II - V 3.1 (Macintosh) 4-55
Smartcom III - V 1.1 4-57
Smarterm 240 - V3.0a 4-62
AT&T Terra Nova - V1.1.1 4-65
White Knight - V 11 4-69
5 CHAPTER 5: TROUBLESHOOTING
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
How to Use This Chapter 5-1
A APPENDIX A: AT COMMAND SET
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
B APPENDIX B: DIAL MODIFIERS
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
C APPENDIX C: S-REGISTERS
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
D APPENDIX D: LOOPBACK DATA TESTS
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Loopback Data Test D-1
E APPENDIX E: QUICK-REFERENCE SUMMARIES
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
GLOSSARY
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
DEFINITY Communications System PREFACE: ABOUT THIS GUIDE
7400B Plus Data Module
User´s Guide Page iii
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
PREFACE: ABOUT THIS GUIDE
The purpose of this guide is to provide information for installing,
operating, and maintaining the 7400B Plus Data Module.
Note: The 7400B Plus Data Module will be referred to as the
"7400B Plus" throughout this guide.
TYPOGRAPHICAL
CONVENTIONS
ORGANIZATION OF THIS
GUIDE
ffffffffffffffffffffffffffffffffffffffffffff
Throughout this guide, command lines that you type are shown in
typewriter-style characters, and responses that the 7400B Plus
returns are shown in italics. The following is an example.
Enter
(
at h
OK
Note the following characteristics of the display representation:
d
The first line is a command line as it should be typed. The
Enter
(
fffffffbbbbbbb
the Enter or Return key to complete the command line.
d
Spaces are used to separate commands in some examples
shown in this guide. In actual use, the spaces may be typed,
but they are not required.
d
The second line in the example shows a typical response
returned by the 7400B Plus.
fffffffbbbbbbb
)
symbol, when shown, indicates that you must press
)
ffffffffffffffffffffffffffffffffffffffffffff
The following paragraphs summarize the chapters and
appendices contained in this guide.
Chapter 1: Introduction. Discusses the basic operating
features of the 7400B Plus and describes the external
indicators and connectors.
Chapter 2: Installation. Describes the hardware and software
required for installing the 7400B Plus, and outlines
procedures for preparing the 7400B Plus for operation.
Chapter 3: Configuration and Operation. Describes how to
issue commands to your 7400B Plus. In addition, it describes
how to change, store, and recall configuration parameters,
and outlines how to create and save custom configuration
profiles. It also provides some basics on 7400B Plus
operation, outlines a typical on-line data session, and
discusses more advanced command usage with example
command lines. If you are not familiar with the ‘‘AT’’
command interface and you are not using your 7400B Plus
with a PC communications package, you will need to
familiarize yourself with this chapter.
PREFACE: ABOUT THIS GUIDE DEFINITY Communications System
7400B Plus Data Module
Page vi User´s Guide
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Chapter 4: PC Applications. Contains notes on how to
configure some popular voice and data PC communications
packages for use with the 7400B Plus.
Chapter 5: Troubleshooting. Describes procedures for
troubleshooting problems that may be encountered while
configuring and operating the 7400B Plus.
Appendix A: AT Command Set. Contains an explanation of
each AT command accepted by the 7400B Plus.
Appendix B: Dial Modifiers. Contains an explanation of
each Dial Modifier accepted by the 7400B Plus.
Appendix C: S-Registers. Contains an explanation of each
S-register used by the 7400B Plus.
Appendix D: Loopback Data Tests. Provides information on
how to perform loopback tests and how to isolate problems
using the 7400B Plus.
RELATED
DOCUMENTATION
Appendix E: Quick-Reference Summaries. Contains quickreference summaries of AT commands, S-registers, result
codes, factory-default configuration settings, EIA-232-D
connector
pin-outs, ASCII character set.
A glossary and an index are provided at the rear of this guide.
ffffffffffffffffffffffffffffffffffffffffffff
The following is a list of other manuals that may provide helpful
information while installing and using the 7400B Plus. Since each
user may have different equipment and software preferences or
availability, only generic titles are given for the manuals.
If you are using a terminal device other than a PC:
User’s guide for your terminal device. You may need
information about the configuration and capabilities of your
terminal device from this manual during the installation and
preliminary operation of the 7400B Plus.
If you are using a PC as your terminal:
User’s guide for Microsoft MS-DOS. You may need this
reference for explanations of commands used by your PC to
install, configure, and run your PC communications package.
User’s guide for your PC communications package. You may
need this guide for information on how to configure your
terminal emulation software to access the 7400B Plus.
DEFINITY Communications System CHAPTER 1: INTRODUCTION
7400B Plus Data Module
User´s Guide Page 1-1
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
CHAPTER 1: INTRODUCTION
This chapter discusses the basic operating features of the 7400B
Plus and describes the external indicators and connectors.
The 7400B Plus is a new version of the 7400B Data Module. It is
fully compatible with the 7400B and supports all of its
functionality and applications. In addition, the 7400B Plus has the
following benefits:
d
the ability to dial voice calls from your terminal device, and
d
enhanced support for calls that utilize higher speed modems
(9600 V.32 modems) in a modem pool.
OVERVIEW Congratulations on the addition of the AT&T 7400B Plus.
ffffffffffffffffffffffffffffffffffffffffffff
Following our tradition of excellent quality and high reliability,
we have designed this new 7400B Plus with the latest advances in
telecommunications technology.
The 7400B Plus is a full-duplex asynchronous, Hayes Compatible
data module. It provides integrated voice-data communications
at the desktop over standard twisted pair wiring. At the desk, the
7400B Plus provides asynchronous communication speeds
ranging from 300 bps to 19.2 Kbps. The 7400B Plus’s ability to
emulate Hayes compatible modems, makes it compatible with the
many standard PC communications packages that use Hayes
Command sets. In addition, the 7400B Plus provides a voice dial
capability that allows you to initiate voice calls from a PC using
industry standard "auto-dialer" PC communications packages.
The 7400B Plus is a data service link between a Data Terminal
Equipment (DTE) device and the following AT&T digital PBX
equipment:
d
DEFINITY Communications System Generic 1
d
DEFINITY Communications System Generic 2
d
System 75
d
System 85
Note: Unless a specific DTE device is intended, the words
terminal device shall be used throughout this guide to
represent any applicable DTE device, including a dumb
terminal, a printer, a plotter, or a personal computer (PC)
with an appropriate PC communications package.
CHAPTER 1: INTRODUCTION DEFINITY Communications System
7400B Plus Data Module
Page 1-2 User´s Guide
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
FEATURES A terminal device is connected to the 7400B Plus through a
standard EIA-232-D interface (formerly called the RS-232-C), and
a Digital Communications Protocol (DCP) interface (using a type
D8W modular telephone cord) is used to connect the 7400B Plus to
the digital PBX.
An internal DIP-switch allows the 7400B Plus to be optioned for
use either with or without a telephone. In the stand-alone case,
the 7400B Plus supports data service only, otherwise, the 7400B
Plus provides simultaneous data and voice service. The 7400B
Plus will work with all of the 7400 series DCP voice terminals in
providing simultaneous data and voice service.
The voice dial feature allows you to dial a voice call without
touching the telephone, and depending on the communications
package, you can store telephone numbers on a PC and recall
them for dialing, log phone calls for easy billing, and take notes
for later reference during a telephone conversation.
In addition, the 7400B Plus can be used to automatically turn on
the speakerphone of the voice terminal when a voice call is dialed
from your terminal device. The 7400B Plus voice dial feature can
be used with all DCP voice terminals, except for the following:
d
7403D (all models)
d
7404D (all models)
d
7405D (all models)
d
7407D01A
Note: If a 7400 series voice terminal with data features is used
with the 7400B Plus, data service is provided by the 7400B
Plus and the data features of the voice terminal cannot be
used.
DEFINITY Communications System CHAPTER 1: INTRODUCTION
7400B Plus Data Module
User´s Guide Page 1-3
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Additional features of the 7400B Plus include the following:
d
non-volatile, read-write memory for storing two data
options profiles and up to four telephone numbers
d
an ‘‘AT’’ command interface that emulates a Hayes 2400
Smartmodem and supports the following:
storage of the wait time for carrier detect interval (S7
register)
voice call origination using the ‘‘ATDP’’ command
d
automatic speed and parity adjustment
d
even, odd mark, space or no parity
d
automatically adjusts data throughput
d
power-up self-test
d
local and remote loopback tests with test duration timers
d
voice terminal powered by the PBX is not affected if ac
power is removed from the 7400B Plus
CHAPTER 1: INTRODUCTION DEFINITY Communications System
7400B Plus Data Module
Page 1-4 User´s Guide
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
PHYSICAL DESCRIPTION The external features of the front and rear panels of the 7400B Plus
and the separate power supply unit are described in this section.
The 7400B Plus has a removable access panel on top of the unit,
which is described further in the hardware installation section of
Chapter 2, "Installation."
Front Panel The front panel of the 7400B Plus is shown in Figure 1-1, and the
ffffffffffffffffffffffffffffffffffffffffffff
10 LEDs on the front panel are described in Table 1-1. In addition
to indicating the status of the set during normal operation, the
LEDs also indicate the result of the self-tests when initially
powered.
Artwork to be supplied
Figure 1 Front Panel
DEFINITY Communications System CHAPTER 1: INTRODUCTION
7400B Plus Data Module
User´s Guide Page 1-5
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
TABLE 1-1
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Connector Description
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Front Panel LED Indicator Descriptions
POWER/
TEST
This red LED normally indicates that power is applied to the 7400B Plus.
This LED flashes during any test mode, except the start-up self-test. It
also flashes along with the DATA LED when the 7400B Plus is unable to
communicate with the PBX.
DATA
METERING
This red LED indicates that the Data Metering option is enabled, and will
indicate the state of the CTS (Clear To Send) lead when metering.
AA Automatic Answer. This red LED lights continuously when Automatic
Answer is enabled, and flashes when there is an incoming call.
CD Carrier Detect. This red LED lights as long as communication is
established with the far end device.
RD Receive Data. This red LED lights when received data is being
transferred from the 7400B Plus to the local terminal device.
SD Send Data. This red LED lights when transmitted data is being
transferred from the local terminal device to the 7400B Plus.
TR Terminal Ready. This red LED normally indicates the state of the DTR
lead. The LED is always on when the 7400B Plus is optioned to ignore
the DTR lead.
OH Off Hook. This red LED lights continuously from the time a data
communications call is initiated until the call is terminated.
CHECK
SPEED
DATA This green LED lights to indicate that a data call is in progress. This LED
This red LED lights when a call set up fails because of an incompatibility
between the configuration of the local terminal device and the far end
device. The incompatibility will usually occur if a common operating
speed cannot be achieved between the two endpoints. Chapter 5,
"Troubleshooting," provides information about this and other conditions
that may cause this LED to light.
flashes along with the POWER/TEST LED when the 7400B Plus is unable
to communicate with the PBX.
CHAPTER 1: INTRODUCTION DEFINITY Communications System
7400B Plus Data Module
Page 1-6 User´s Guide
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Rear Panel The rear panel of the 7400B Plus is shown in Figure 1-2, and the
connectors located on the rear panel are described in Table 1-2.
Artwork to be supplied
Figure 2 Rear Panel
TABLE 1-2
Rear Panel Connector Descriptions
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Connector Description
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
PHONE This connector accepts one end of the D8W telephone line cord used to
connect a telephone or voice terminal to the 7400B Plus.
LINE This connector accepts one end of the D8W telephone cord that connects
between the 7400B Plus and the PBX wall jack.
POWER This connector accepts the output cable of the separate power supply
unit used with the 7400B Plus.
PORT 1 This connector accepts a male plug from the EIA-232-D (or RS-232-C)
cable that connects between the 7400B Plus and the terminal device.
DEFINITY Communications System CHAPTER 1: INTRODUCTION
7400B Plus Data Module
User´s Guide Page 1-7
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Power Supply Unit A separate power supply unit is shipped with the 7400B Plus.
This unit connects between a grounded AC outlet and the
‘‘POWER’’ connector at the rear of the 7400B Plus. This power
supply unit provides the necessary operating voltages for the
7400B Plus.
Caution: Make certain that the AC outlet to which you connect
the power supply is unswitched (for example, not
controlled by a wall switch or light dimmer).
Instructions for installing the power supply unit with an
illustration are provided in the hardware installation section of
Chapter 2, "Installation."
DEFINITY Communications System
7400B Plus Data Module
User´s Guide
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
DEFINITY Communications System CHAPTER 2: INSTALLATION
7400B Plus Data Module
User´s Guide Page 2-1
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
CHAPTER 2: INSTALLATION
This chapter describes the equipment required for installing the
7400B Plus, and outlines procedures for preparing the 7400B Plus
for operation. If you are using the 7400B Plus with a PC, you will
be ready to use a PC communications package after reading this
chapter. You should continue reading this guide, if you are using
the 7400B Plus with a terminal, printer, or host, or if you want to
learn about the ‘‘AT’’ interface and operations of the 7400B Plus.
HARDWARE AND
SOFTWARE
REQUIREMENTS
This section provides information on the equipment packaged
with your 7400B Plus, and the additional items required for
installation. It uses illustrations to show how equipment is
arranged for installations with and without a voice terminal, and
with adjunct equipment.
ffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffff
What You Have Your 7400B Plus package should contain the following:
d
7400B Plus Data Module
d
a 7-foot D8W telephone cord for the Data
Communications Protocol (DCP) connection between the
7400B Plus ‘‘LINE’’ jack and the PBX wall jack
d
power supply
ffffffffffffffffffffffffffffffffffffffffffff
What You Need To install and operate the 7400B Plus, you will need the following
items:
d
an asynchronous data terminal or personal computer (PC)
with a communications package
d
an EIA-232-D interface (formerly RS-232-C) cable to
connect between the terminal device and the 7400B Plus
d
(optional) 7400 series DCP voice terminal (optional for
data, required for voice), and associated adjunct
equipment, if applicable
Note: The following list identifies those voice terminals
that cannot be used with the 7400B Plus voice dial
feature:
d
7403D (all models)
d
7404D (all models)
d
7405D (all models)
CHAPTER 2: INSTALLATION DEFINITY Communications System
7400B Plus Data Module
Page 2-2 User´s Guide
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
d
7407D01A
DEFINITY Communications System CHAPTER 2: INSTALLATION
7400B Plus Data Module
User´s Guide Page 2-3
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
If you are not using the voice dial feature, the above
mentioned voice terminals can be used to provide
simultaneous voice and data operation.
d
(optional) a second type D8W cord to connect between the
7400B Plus ‘‘PHONE’’ jack and optional voice terminal
(you may need an adjunct power supply, adapter, and
D6AP cord, if applicable)
Figure 2-1 illustrates the required hardware items for an
arrangement without a telephone, Figure 2-2 shows the set up for
using a telephone without adjunct equipment, and Figure 2-3
shows a similar setup with some typical adjunct equipment.
CHAPTER 2: INSTALLATION DEFINITY Communications System
7400B Plus Data Module
Page 2-4 User´s Guide
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Artwork to be supplied
Figure 1 Typical Standalone Installation
DEFINITY Communications System CHAPTER 2: INSTALLATION
7400B Plus Data Module
User´s Guide Page 2-5
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Artwork to be supplied
Figure 2 Typical Installation with Telephone
CHAPTER 2: INSTALLATION DEFINITY Communications System
7400B Plus Data Module
Page 2-6 User´s Guide
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Artwork to be supplied
Figure 3 Typical Installation with Telephone and Adjunct
DEFINITY Communications System CHAPTER 2: INSTALLATION
7400B Plus Data Module
User´s Guide Page 2-7
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
About the Terminal Device The 7400B Plus operates with any asynchronous data terminal
device that has an EIA-232-D (or RS-232-C) interface. If you are
using a PC as your terminal, you will need a suitable PC
communications package. EIA-232-D cables and PC
communications packages are described in the following
paragraphs.
You must set the appropriate configuration options before
connecting the 7400B Plus to a printer or plotter. To do this,
connect a data terminal or PC to Port 1 of the 7400B Plus, change
and store the necessary configuration parameters, remove the data
terminal or PC, and then connect the printer or plotter. The
configuration parameters used for this type of operation are
described in the section, Remote Site Use in Chapter 3,
"Configuration and Operation."
Selecting an EIA-232-D
Cable
Select an EIA-232-D with a male connector at one end to connect
with the Port 1 connector of the 7400B Plus, and a connector of the
appropriate ‘‘gender’’ at the other end to connect to the
communications port of your terminal device.
Note: Cables with the earlier RS-232-C designation will also
work.
The most common EIA-232-D cables are supplied with a male
connector at both ends. If you have this type of cable and the
EIA-232-D port on your terminal device is a male connector, you
can use a cable adapter commonly referred to as a ‘‘gender
changer’’. Otherwise, obtain an EIA-232-D cable that has the
appropriate gender connector at each end to fit your application
needs.
ffffffffffffffffffffffffffffffffffffffffffff
Selecting DCP Cords The 7400B Plus is supplied with a 7-foot D8W cord. Use this, or
obtain the appropriate length D8W telephone cord for DCP
connection between the 7400B Plus and the PBX wall jack. If you
are using the with-telephone option, you will need a second D8W
telephone cord to connect between the 7400B Plus and your
telephone or voice terminal.
ffffffffffffffffffffffffffffffffffffffffffff
CHAPTER 2: INSTALLATION DEFINITY Communications System
7400B Plus Data Module
Page 2-8 User´s Guide
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Selecting PC
Communications Packages
The purpose of PC communications software is to allow your PC
to operate as an asynchronous voice-data communications
terminal. Of the many software packages available, all perform
essentially the same functions, but often in significantly different
ways.
If you do not already have a PC communications package, consult
with an experienced user for advice on selecting software to suit
your voice-data communications needs. The following, though
not required, are a few helpful features that you may wish to look
for in the software you select:
d
Local mode. Also called direct mode, terminal mode, dumb
terminal mode or chat mode, this feature allows you to issue
AT commands to the 7400B Plus to configure its options.
d
Dialing directory. This feature allows you to store several
frequently called numbers, often along with configuration
of the data options needed for completing the connection.
d
Auto-dialer software. This feature allows you to
automate the process of dialing a voice call without
touching the telephone. The following three basic types of
auto-dialer software are available:
Phone Management supports call log and note taking
DOS Utilities typically supports auto-dial capabilities
Personal Information Managers (PIM) supports
automated calendars, databases, time lines, pert charts
d
Predefined data options profiles. Some programs include
completely defined data option profiles (also called
configuration profiles) for popular modems. If available,
select the options profile for the Hayes Smartmodem 2400.
d
Command files. These files, also called script files, allow
you to define a group of commands that may be executed
for automatically logging into specific remote devices.
Chapter 4, "PC Applications," provides guidelines for using a few
of the more popular PC communications packages with the 7400B
Plus.
DEFINITY Communications System CHAPTER 2: INSTALLATION
7400B Plus Data Module
User´s Guide Page 2-9
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Selecting DIP-Switch
Options
Five options are selected by setting switches on an 8-position
DIP-switch (SW1). These options are described here, and
procedures for setting the switches are provided in the next
section titled "Setting the DIP-Switch Options."
ffffffffffffffffffffffffffffffffffffffffffff
With/Without Telephone Option (SW1-1)
When this option is set for operation without an associated
telephone (SW-1 set to ‘‘ON’’), the 7400B Plus offers only data
service between a terminal device and a remote system. Setting
this option for operation with an associated voice terminal (SW-1
is set to ‘‘OFF’’) enables simultaneous data and voice service over
the same line from the PBX.
When the 7400B Plus is optioned for operation with a telephone, a
7400 series DCP voice terminal must be connected to the 7400B
Plus. Data service is provided directly from the 7400B Plus, and
any data features that the voice terminal may offer cannot be
used.
Note: A change in the setting of this option becomes effective
when the 7400B Plus is powered on after being powered
off. The setting of this option cannot be changed
arbitrarily—it must agree with how the PBX line is
administered. Check with your telecommunications
manager to administer the line for simultaneous voice
and data or data service required.
CHAPTER 2: INSTALLATION DEFINITY Communications System
7400B Plus Data Module
Page 2-10 User´s Guide
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Data Metering Option (SW1-5)
When the data metering option is disabled (SW1-5 set to ‘‘OFF’’),
the transfer speed of the 7400B Plus will adjust to match the
transfer speed of the remote system. The CONNECT xxxx
message is displayed when a connection is completed.
When this option is enabled (SW1-5 set to ‘‘ON’’), it allows the
user to set-up a call to a remote end that is running at a slower
speed than the local data module. (This allows the user to
communicate with a slower speed device without lowering the
speed of the terminal). The CONNECT xxxx message will always
indicate the speed of the local data transfer. The 7400B Plus
performs the speed conversion and uses the CTS lead to flowcontrol the user’s terminal if it is sending too much data too fast.
During the data transfer, the DATA METERING LED indicates the
state of the CTS lead.
Note: If you are using a PC with a communications package, or
a dedicated terminal that does not support CTS control,
you cannot make file transfers with the data metering
option enabled.
A change in the setting of this option becomes effective
immediately when the 7400B Plus is in the idle mode or as soon as
it is returned to the idle mode. The 7400B Plus is in idle mode any
time that it is not in test mode or connected to an active data call.
ffffffffffffffffffffffffffffffffffffffffffff
Suppress Touch-Tone/Dial-Tone (SW1-6)
This option is only valid if the speakerphone enable/disable
option is set to enable. This option applies only to voice dial calls,
and is only valid when the Speakerphone enable/disable option
(SW1-7) is set to enable. When the option is disabled (SW1-6 set to
‘‘OFF’’), the speakerphone (if available) is activated before dialing,
allowing the user to hear the dial-tone and touch-tones. When the
switch is enabled (SW1-6 set to ‘‘ON’’), the speakerphone is
activated after dialing, allowing the user to hear the far-end
ringing and answer.
DEFINITY Communications System CHAPTER 2: INSTALLATION
7400B Plus Data Module
User´s Guide Page 2-11
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Speakerphone Disable/Enable Option (SW1-7)
This option applies only to voice dial calls. When the
speakerphone option is enabled (SW1-7 set to ‘‘OFF’’), the
speakerphone is turned on automatically when you use your
terminal to dial a voice call. If you want to disable the automatic
speakerphone feature, disable the speakerphone option (SW1-7 set
to ‘‘ON’’). This option will have no effect if the voice terminal
does not have a speakerphone.
Note: When SW1-6 and SW1-7 are set to ‘‘OFF’’, the 7400B Plus
automatically activates the speakerphone at the beginning
of the voice call so you can hear dial-tone and touchtones. When SW1-6 is set to ‘‘ON’’ and SW1-7 is set to
‘‘OFF’’, the activation of the speakerphone is delayed
until dialing is complete.
ffffffffffffffffffffffffffffffffffffffffffff
Make Busy on Local Loop Option (SW1-8)
HARDWARE
INSTALLATION
This option controls the make-busy feature of the 7400B Plus.
When the option is enabled (SW1-8 set to ‘‘ON’’), the 7400B Plus
will busyout the DCP line when either the Local Loopback or
Local Loopback/Self-Test mode is entered. The busyout
condition is released when the test ends.
Note: A change in the setting of this option becomes effective
immediately when the 7400B Plus is in the idle mode or as
soon as it is returned to the idle mode. The 7400B Plus is
in idle mode any time that it is not connected to an active
data call.
ffffffffffffffffffffffffffffffffffffffffffff
This section outlines procedures for setting the DIP-switch
options, connecting the EIA-232-D cable, installing the power
supply, and connecting the D8W telephone cord(s).
Caution: To avoid possible shock hazards and damage to the
equipment, you should perform the installation steps
in the order given.
CHAPTER 2: INSTALLATION DEFINITY Communications System
7400B Plus Data Module
Page 2-12 User´s Guide
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Setting the DIP-Switch
Options
Five options are selected by setting switches on an 8-position
DIP-switch. Setting these switches is described in the following
paragraph.
Note: The factory-default settings of these switches are correct
for the majority of applications. Check the default
settings shown in Table 2-1 to determine whether you
need to make any changes.
TABLE 2-1
Option DIP-Switch Settings
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Telephone SW1-1
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Without Phone ON
With Phone
(factory-default)
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
OFF
Data Metering SW1-5
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
On—enabled ON
Off—disabled
OFF
(factory-default)
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Suppress Touch-Tone/Dial Tone SW1-6*
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
On—enabled ON
Off—disabled
OFF
(factory-default)
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Speakerphone Disable/Enable SW1-7*
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
On—disabled ON
Off—enabled
OFF
(factory-default)
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Busy Out on Local Loop SW1-8
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
On—enabled ON
Off—disabled
OFF
(factory-default)
* Applies to voice dial calls only.
DEFINITY Communications System CHAPTER 2: INSTALLATION
7400B Plus Data Module
User´s Guide Page 2-13
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Caution: Disconnect all cables and telephone cords attached at
the rear of the unit. Failure to disconnect all cables and
cords at this point could result in permanent damage
to the 7400B Plus.
1 Remove the top access panel of the 7400B Plus as follows:
(See Figure 2-4.)
a While applying a gentle lifting pressure at the rear edge
of the access panel, insert the tip of a ball-point pen or
other suitable device into each of the two tab-lock holes
in the rear panel to release the locking tabs.
b Lift and remove the access panel.
2 If a ROM board is installed just inside the access opening of
the 7400B Plus, grasp the edges of the ROM board inside the
access opening and lift the board out of its socket.
3 Locate the 8-position DIP-switch on the main circuit board,
approximately in the center of the area exposed by the access
opening.
4 Set the appropriate positions of this DIP-switch as shown in
the Table 2-1.
5 If a ROM board was removed in step 2, reinsert the board
into its connector.
6 Replace the access panel by placing it into position and
pressing down at the rear edge to engage the locking tabs.
CHAPTER 2: INSTALLATION DEFINITY Communications System
7400B Plus Data Module
Page 2-14 User´s Guide
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
To access and set the DIP-switch options, refer to Figure 2-4 and
perform the following:
Artwork to be supplied
Figure 4 Accessing the DIP Switches
DEFINITY Communications System CHAPTER 2: INSTALLATION
7400B Plus Data Module
User´s Guide Page 2-15
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Connecting the EIA-232-D
Cable
Connect the EIA-232-D cable between the 7400B Plus and the
terminal device as follows:
1 Insert a male connector of the EIA-232-D cable into the
connector labeled PORT on the rear panel of the 7400B Plus.
Tighten both connector retaining screws.
2 Insert the other end of the EIA-232-D cable into the
communications port connector on the terminal device.
Tighten all retaining screws.
Note: Be sure to attach any required adapter as discussed
previously in the paragraphs titled ‘‘Selecting the
EIA-232-D Cable.’’
ffffffffffffffffffffffffffffffffffffffffffff
Connecting the DCP Cord Attach the DCP type D8W telephone cord as follows:
1 Insert either end of the telephone cord into the connector on
the rear panel of the 7400B Plus labeled LINE.
2 Insert the other end of the telephone cord into the PBX wall
jack.
3 If you are using the with-phone option of the 7400B Plus
(voice and data), install the second D8W telephone cord as
follows:
a Insert one end of the second D8W cord into the jack on
your 7400 series DCP voice terminal.
b Insert the other end of the second D8W cord into the
jack on the rear panel of the 7400B Plus labeled
PHONE.
Note: An internal DIP-switch must be set correctly
for this option to work (see "Setting the DIPSwitch Options" in this chapter). Also, if your
voice terminal has data capabilities, the data
features of the voice terminal are not
supported while it is connected to the 7400B
Plus.
CHAPTER 2: INSTALLATION DEFINITY Communications System
7400B Plus Data Module
Page 2-16 User´s Guide
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Connecting the Power
Supply
Connect the separate power supply unit to the 7400B Plus as
follows:
1 Insert the output connector of the power supply into the
connector on the rear panel of the 7400B Plus labeled
‘‘POWER.’’
Caution: Be sure that the side of the power supply cable
connector labeled ‘‘TOP’’ is facing upward before
inserting the connector.
2 Insert the AC connector of the power supply unit into an
appropriate AC outlet.
Note: Since the 7400B Plus does not have a power on/off
switch, the unit will power on as soon as the power
supply is connected to an active AC line.
Caution: Make certain that the AC outlet to which you
connect the power supply is unswitched (for
example, not controlled by a wall switch or light
dimmer).
Loading...