Comdial Dxp Correspondance Instructions Manual

II
Introducing The DXPIntroducing The DXP
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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...

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...

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...

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...

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...

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...

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...

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...

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...

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...