Comdial Dxp Correspondance Instructions Manual

							II
Introducing The DXPIntroducing The DXP
. . . . . . . . ..L.............................................................~......l-l
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9Introducing This Course.......................................................................
l-l
Using The Video Series........................................................................
l-2
Introducing The DXP Hardware..........................................................
l-3
The 
DXP’s modular design..........................................................
l-3Introducing TheDXP Main
Cabinet....................................................l-4
Using The DXP Modem......................................................................
l-5
Using The Battery Backup...................................................................l-5
Identifying TheMandatoryDXP Boards.............................................
l-6
Interface Boards...........................................................................
l-6
Services Board.............................................................................
l-7CPU Assembly
.............................................................................l-7
RAM
Card....................................................................................1-8Software Card
..............................................................................l-8
Identifying The Station Boards
............................................................
l-9
AnalogStationBoard..
.................................................................l-9
Digital Station Board
...................................................................l-9
IndustryStandardTelephoneBoard..
.........................................l-10
Wiring The Stations
...................................................................l-10
Identifying The Line Boards..............................................................
l-11Loop start line board
..................................................................
1-12Multipurposelineboard..
...........................................................1-12TI board..
....................................................................................1-13DIDboard
..................................................................................l-13’Chapter Con tents 
						

							1.10Using The Auxiliary Board and Add-On Cards................................1-14
DTMFToneCard......................................................................1-14
Communications Card................................................................1-15
Synchronization Card.................................................................l-15
1.11Using The Conference Board.............................................................1-16
1.12Introducing The Expansion Cabinet...................................................
1-161.13 Concluding Chapter One....................................................................
1-17Chapter One Review Questions..........................................................
l-18Chapter Con tents 
						

							DXP Correspondence Manual
Introducing The DXPIntroducing The DXP
1.1
IThis book is part one of Comdial Corporation’s three-part DXPIntroducingCertification process.You must pass all three portions of the training
to become an authorized DXP installer.
This Course 1orice you complete the correspondence course, you can enroll in the
Basic DXP course-a three-day class that introduces you to the
fundamentals of DXP installation, programming, and operation. The
final stage of your certification is the two-day Advanced DXP course,
which covers some of the advanced features and peripherals, like the
Tl, Digital Voice Announce (DVA), and DID for example.
In addition to your correspondence manual, you should have received
a series of training videotapes and the DXP System Manual. If you
study all of these materials carefully, completing this correspondence
course is fairly simple. You will find study questions at the end of
each chapter in this manual; the answers to these questions are in the
back of the book.
Keep in mind that the purpose of this course is to provide you with a
basic overview of the DXP system and to prepare you for the
classroom portion of the training.
For more information about the DXP, or for additional training
materials, call Comdial’s Inside Sales Department at l-800-347-1432.
introducing The DXP I 
- 1 
						

							Introducing The DXPDXP Correspondence Manual1.2
UsincThe following list details the purpose of each of the videos in this_ ----3 The series.
Video SerieslWhen you have finished Part One, Introducing The DXP, youshould be acquainted with the DXP hardware and
printed-wire-boards, and you’ll be ready to move on to Part
Two, Planning an Installation.
l
Part Two, Planning an Installation, evaluates the preliminaryconsiderations for installation and programming. In Part Two,
we’ll survey the installation site and show you some of the
pre-installation steps.
lPart Three, Installing The 
DXP, takes you step-by-step through
the DXP installation, including hardware, software, wiring,
and optional peripherals.
lIn Part Four, Programming The DXP, we’ll be programming
the system, and we’ll explain the features and applications that
we use on that system; Any additional DXP features will be
covered in the classroom portion of the training.
l
Part Five, Operating The Telephones, gives you an overviewof the 
DigiTech II, Impact, and Industry-standard telephones
and explains how they operate through the DXP. The video
also discusses individual station programming that the
end-user can perform.
l
Part Six, Advanced DXP Features, discusses a few of DXP’smore advanced features.
When you have finished with all of this manual and have watched all
of the correspondence training tapes, you should be familiar with the
following:
-The versatility of the DXP system and how to best utilize the
features and applications to meet your customer’s needs;
- The DXP components-includingsystem hardware, software,
printed-wire boards, and telephones;
-Installation, wiring, and system checkout;
-Programming of a DXP system and stations,
-and finally, using the various telephones with the DXP.
By watching the training tapes and completing this correspondence
course, you will be prepared to move on to the DXP classroom
training. At the beginning of the in-class training, you will be given a
pre-test based on the videos and correspondence course.
I- 2 Introducing The DXP 
						

							1.3
Introducing
The DXP
HardwareThe DXP has a modular design with all of the system’s switching
circuitry housed on printed-wire-boards that simply slide in and out of
the cabinets. Installing the DXP is quick and easy, and the variety of
boards makes the system versatile enough to meet virtually any
business’s needs. The DXP is comprised of two cabinets, the main
cabinet and the expansion cabinet.
The DXP’s Modular Design
One of the benefits of the DXP is its flexibility, and that flexibility
comes from its modular design.
The term “Modular design” means that the system’s electronic
components are housed in a series of self-contained printed wire
boards that can be arranged quickly and easily into a variety of
configurations.
By changing the printed wire boards, you can find the right
combination of features and telephone capacities to suit the needs of
your particular client.
For example, if a client desires maximum line capacity, you can
configure a fully-equipped DXP main cabinet and expansion cabinet
for a total of 120 lines on 16 telephones. If a client wants maximum
telephone capacity, you can configure the system to provide 32 lines
on 192 telephones.
The number and type of boards that you install determines the DXP’s
line and telephone capacities. You can also update the DXP’s software
card to enhance the features and capabilities of the DXP.
The DXP allows you to make many of these modifications without
disrupting the client’s normal telephone service.
Introducing The DXP 7 - 3 
						

							Introducing The DXPDXP Correspondence Manual
1.4The main cabinet (DXCBM) contains the main power supply and up
Introducingto 12 printed-wire-boards. The cabinet is 26 inches wide, 19 inches
high, and twelve inches deep, and it’s comprised of the following
The DXP Main 
components:.
Cabinetlan external, ventilated sheet-metal housing with detachable
front cover,
lthe card cage-the metal frame into which you insert the
printedwire-boards,
.
and the backplane-a large printed-wire-board that provides
the circuitry to connect the individual boards together.
When you first open the main cabinet, you will see an empty space
where the power supply is to be mounted. The power supply provides
DC operating power for the DXP printed-wire boards and also for the
individual digital stations as well. The power supply is shipped
separately, and we’ll cover it later in this manual.
The space directly above the power supply is reserved for the ring
generator. Industry-standard telephones require voltage to enable
ringing and to turn on the message-waiting lights; the ring generator
supplies the required voltage to all of the IST stations on the DXP.
You must have a ring generator if you are going to use IST stations,
and you must have a ring generator in each cabinet that supports IST
stations. It’s a good idea, therefore, to plan on configuring all of your
IST stations through one of the cabinets.
Moving from left to right in the main cabinet, the slots for 
the 12
boards are as follows:
- Interface board
- Services board
- CPU Board (RAM Card/Software Card)
- Universal 1 / Auxiliary Board
- Universal 2 / Auxiliary Board
- Universal slots 3,4,5
-Line slots 4, 3, 2, 1.
For more information on the DXP main cabinet, see 
GCA40-069 and
IMI66-085.1 
- 4 Introducing The DXP 
						

							I.5
Using The DXP
ModemThe space directly below the interface board (slot one) is reserved for
the DXP modem, DXMDM. The modem allows you to service and
program the DXP from a remote location. The modem runs at a
maximum of 2400 baud, and it receives its power from the 
DXPpower supply. Please note that this is a proprietary modem. For more
information on the modem, see 
IMI89-139.
1.6 1You can install a battery backup (BBLDX) that provides a minimum
Using The
Battery Backupof one hour of operation should the DXP lose power. The DXP
supports a maximum of two battery backups. If you are using an
expansion cabinet, you need two battery backups to guarantee at least
an hour of backup operation. You can, however, use two battery
backups without an expansion cabinet in order to provide even longer
backup time. For more information on using the battery backup, see
IMI89-074.Introducing The 
DXP 1 - 5 
						

							Introducing The DXPDXP Correspondence Manual
1.7
Identifying
The Mandatory
DXP BoardsThe card cage of the main cabinet has grooves on the top and bottom
racks to ensure that each printed-wire-board only fits into the correct
slot. On the backplane are 
pinouts that match the pinouts on each
board. These connections provide the contact points for the bus
connectors that are edge-mounted on the printed-wire-boards. A
horizontal metal bar runs along the backplane to provide structural
support for the backplane; it also provides mechanical keying of the
boards to the backplane to prevent you from accidentally inserting a
board into the wrong slot. The front of the cabinet also has a printed
label that designates which printed-wire-board fits into which slot.
Keep in mind that some of the 
DXP’s boards are mandatory for
system operation and some of them are optional.
Interface BoardsThe first slot in the cabinet, moving from left to right, is for the
Interface 1 board 
(DXINM). The interface 1 board buffers the signals
sent from the main cabinet to the expansion cabinet; it makes sure
there is no integrity loss in the digital signal between the two cabinets.
So, you’ll only need an interface board if you’re going to use an
expansion cabinet (for information on the expansion cabinet’s
interface board, see section 1.9, Introducing The Expansion Cabinet).
The slot for the interface 1 board is smaller than any of the other
card-cage slots. The interface board is the only half-sized board that
inserts directly into the backplane. Both interface boards, the one for
the main cabinet and the one for the expansion cabinet, are shipped
with the expansion cabinet. For more information on the interface
boards, see 
IMI66-086.
I- 6 Introducing The DXP 
						

							DXP Correspondence ManualIntroducing The DXP
Services Board
The second slot is reserved for the Services board (DXSRV). The
services board houses all of the following: the master timing and
synchronization circuits for voice and data paths, the conferencing
circuitry (the DXP has twenty-six time slots dedicated for
conferencing) the digital pad for controlling audio on a per-channel
basis, and the voice and data time switches. The services board also
provides a 6-pin modular jack that serves as an input for
music-on-hold and background music as well as an output for an
external paging amplifier. The status light on the front of the board
stays on-steady to indicate normal system operation. The light goes
off or flashes to indicate system malfunction. For more information on
the Services board, see IMI66-085.CPU Board Assembly
The central processing unit, or CPU, board belongs in the third slot
(DXCPU-68K). The CPU board is actually an assembly containing the
main board and two additional cards. The CPU board holds the
primary processing and control circuits for the DXP system; it also
contains the master processor, the interface connector for the system
memory, two 
DTh4F receivers, and the system calendar and clock.
The CPU board has four 6-pin modular jacks that provide the interface
for two serial data devices and four relay contacts. Just as with the
services board, the status light is on-steady to indicate normal system
operation. The CPU light, however, flashes to indicate system
malfunction and is steady-off to indicate a loss of power.
Along with the printed-wire-boards that slide into the backplane, the
DXP has smaller circuit cards that mount directly onto certain
full-sized boards. We don’t use the terms “card” and “board”
interchangeably; boards mount directly into the DXP, while cards
mount onto boards. Two of these additional cards, the RAM and
Software cards, mount onto the CPU board and make up the assembly.
For more information on the CPU board, see 
IMI66-085.introducing The DXP 1 
- 7 
						

							Introducing The DXPDXP Correspondence Manual
Ram Card
The random access memory, or RAM, card holds the memory.
required to support the system’s software package and database. The
RAM card attaches directly to the CPU board, and its circuitry is
connected to the CPU board through a 
64-pin dual in-line connector.
The RAM card is available in two forms: the standard 
RAM card,
DXRAMSTD68K, and the expanded RAM, DXRAM-EXP68K. Both
boards have a super capacitor that retains system programming for a
minimum of 60 hours if the DXP loses power. The main difference
between the two boards is that the standard RAM card provides
approximately 200 Station Message Detail Records (SMDRs); the
expanded RAM provides approximately 12,200 SMDRs. The
expanded 
RAM also allows on-board software upgrade; a feature that
increases the speed of upgrading the DXP software.
While the RAM card attaches directly to the CPU board the system
software card attaches onto the RAM card. For more information on
the Ram card, see 
IMI66-085, and IMI89-095.Software Card
The software card 
(DXPSW-xxx) houses the erasable, programmable,
read-only memory, or EPROM, that stores the operating controls of
the DXP telephone system. The software card attaches to the RAM
card, and, like the RAM card, signals pass between these cards
through a 
64-pin dual in-line connector. Chapter Three details how to
connect these cards. There are several different versions of software
available for the DXP; the different software versions determine
which telephones and features the system supports. For more
information on the Software card, see 
IMI66-085, and IMI89-095.1 
- 8 Introducing The DXP