Comdial Dxp Plus Instructions Manual

1.2 Determining The Board Configuration That You Will Need
Use the following specifications to determine the maximum number of station boards and DTMF receiver cards
that you may need.
·Each eight-station board supports up to eight telephones. (It will actually support 16 telephones—two
telephones at each port sharing a common intercom number.)
·Up to two industry-standard telephones can be bridged at one station port as long as you do not exceed a
combined ringer equivalence number, or REN, of 2.0....

You can configure the system so that amaximum of 29 of these telephones can dial simultaneously.
·services board circuitry that supports one telephone plus one receiver card that supports four telephones
provides support for six simultaneously dialing telephones
·upper expansion cabinet interface board with three receiver cards supports 12 simultaneously dialing telephones
·lower expansion cabinet interface board with three receiver cards supports 12 simultaneously dialing telephones
If you add the...

2.0 Installing Circuit Boards
CAUTION
Circuit boards are susceptible to damage caused by electrostatic discharge, and you must keep this fact in
mind as you handle the circuit boards. Refer to the Comdial publication IMI01-005,Handling Of
Electrostatically Sensitive Components,for general information. Specific handling precautions are also
included in this installation instruction.
2.1 Creating A Static Safe Work Area
When servicing the common equipment cabinet at the installation location, it is a good...

Typical Earth
Ground
Static
Wrist
Strap
ESD Protective
Mat ESD Protective
Mat
ESD Protective
Worksurface
Static 2
Common Point Ground
Creating A Static Safe Work Area
Expansion
Cabinet
Expansion
Cabinet
Earth
Ground 1 Meg Ohm
Resister Conductive
MatStatic Discharge
Wrist Stap Common
Equipment
Cabinet
PLUS035
Providing Static Protection At The Cabinet Mounting Location
Installing The DTMF Receiver Card IMI89–186
Installing The DTMF Receiver Card – 5 

3.0 Installing The Receiver Card
You can install one receiver card in the top position on the services board. You can add two additional receiver
cards to the lower two positions on the services board; however, you must take specific programming action to
enable their use (this program feature name is: Services DTMF Highway). You can install three receiver cards on
the upper and lower expansion cabinet interface boards.
CAUTION
If you add two additional receiver cards to the lower two positions on the...

Connecting The Receiver Card To Its Host Circuit Board
Auxiliary Board
Receiver Card
(4 Places)
PLUS060
Lower Expansion Cabinet
Interface Board
Receiver Card
(1 Place)
Receiver Card
(2 Places -
See Text Details)
Services Board
Receiver Card
(1 Place)
DXOPT-TON
(2 Places If
Programmed
-See Text)
Upper Expansion Cabinet
Interface Board
Receiver Card
(3 Places)
Installing The DTMF Receiver Card IMI89–186
Installing The DTMF Receiver Card – 7 

Installing The Ring Generator Assembly
In The DXP Plus Digital Communications System
1.0 Introducing The Ring Generator Assembly Installation
The DXPPlusdigital communications system supports the use of on-premise industry-standard telephones. To
do this, it requires a ring generator assembly to supply ringing voltage to the industry-standard telephones to
signal incoming calls.
Regardless of the number of installed industry-standard telephones, you will need to install one ring generator for
the main...

2.0 Creating A Static Safe Work Area
When servicing the common equipment cabinet at the installation location, it is a good practice to place a
conductive mat in front of the cabinet area and ground the mat to a good earth ground. (The third wire ground of
the AC power line is also an acceptable grounding point.) The grounded conductive mat provides a safe static
electric discharge path.
When removing the common equipment cabinet from the installation location for servicing, it is a good practice to...

Typical Earth
Ground
Static
Wrist
Strap
ESD Protective
Mat ESD Protective
Mat
ESD Protective
Worksurface
Static 2
Common Point Ground
Creating A Static Safe Work Area
Expansion
Cabinet
Expansion
Cabinet
Earth
Ground 1 Meg Ohm
Resister Conductive
MatStatic Discharge
Wrist Stap Common
Equipment
Cabinet
PLUS035
Providing Static Protection At The Cabinet Mounting Location
Installing The Ring Generator Assembly IMI89–187
Installing The Ring Generator Assembly – 3 

3.0 Installing The Ring Generator Assembly
You can install the ring generator assembly in the main and expansion cabinets per the following steps.
1. Turn off the power to the system, unplug the AC line cord from the AC outlet, and disconnect the optional
battery back up equipment.
2. Install your static discharge wrist strap on your bare wrist; adjust it for a snug fit.  Be sure that the strap is
touching bare skin and is not isolated by clothing. Connect the wrist strap cord between the wrist strap and...