Comdial Dxp Plus Instructions Manual

5.0 Testing The Analog Station Installation
5.1 Making A Resistance Check
Make the following resistance measurements at the station connector blocks under the following conditions.
·AC power cord disconnected from electrical outlet.
·External battery back-up assembly disconnected.
·Common equipment connected to station connector blocks.
·Stations wired and wiring punched down on blocks.
·Bridging clips removed from blocks to isolate stations from common equipment.
1. Measure the resistance of each...

5.3 Causing An Analog Station To Self Test
You can cause analog multiline stations to self test for proper operation per the following instructions:
1. Disconnect line cord at station base.
NOTE: The adjacent odd or even station will be disabled during the time that the station line cord is being
disconnected or reconnected.
2. Press and hold MUTE and reconnect line cord to station connector. Station will automatically perform self
test routine.
3. Release MUTE as soon as test begins. Sequence of test is...

Installing The Digital Station Board
In The DXP Plus Digital Communications System
1.0 Introducing The Digital Station Boards
The digital station board supports the operation of both the DigiTech and Impact digital multiline telephones.
1.1 Inventorying The Digital Station Boards
There are two models of station boards available for use.
·Eight-station model supports eight DigiTech or Impact multiline and single line proprietary digital telephones
·16-station model supports 16 DigiTech or Impact multiline...

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...

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 Digital Station Board IMI89–174
Installing The Digital Station Board – 3 

2.2 Installing Station Boards In The Equipment Cabinet
1. Normally you should disconnect the AC power cord from the AC outlet and disconnect the optional battery
back-up assembly from the main cabinet power supply; however, when necessary, you can install a station
board in an operating system. If you must do this, connect one end of a standard telephone handset coil cord
to the precharge port on the power supply. During step 5, you will connect the other end of this coil cord to
the precharge jack on...

Viewing A Typical Station Board Installation
Static Discharge Wrist StrapPower Supply
Pre-charge Port
Analog or Digital
Station Board Station Board
Pre-charge
Port Pre-charge
Cable For
Station Board
Installation
During
Power Up
PLUS029
Installing The Digital Station Board IMI89–174
Installing The Digital Station Board – 5 

3.0 Connecting The Stations
Connections between the telephone stations and the common equipment station boards are typically via type
66M-xx connector blocks that are cable connected to 50-pin male connectors on the station boards.
The American Wire Gauge (AWG) size of the station wiring determines the maximum distance allowed from the
common equipment to the stations. The following chart details this relationship.
Station Type Wire Gauge
20 AWG 22 AWG 24 AWG
Digital Telephone 2500 Feet 2000 Feet 1500...

Viewing A Typical Station Connection
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50
CLIP TERMINALS
50
26
1 25
Typical Station
Connector Block
Ferrite
Collar Female 50-pin
Cable Connector
J1 (Male 50-pin
Connector) Typical Digital
Station Board
PLUS068
Installing The Digital Station Board IMI89–174
Installing The Digital Station Board – 7 

3.2 Detailing The Station Connections
3.2.1 Detailing Digital Station Board Connections
25-Pair Connections Station Pair Connections Station Identification
Wire Color PairPin
No.Clip
Term.Pair Identification Wire Color StationLocation(note the site
position in this column)
White-Blue
126 1
Signal PathGreen
1
Blue-White 1 2 Red
White-Orange
227 3
Signal PathYellow
2
Orange-White 2 4 Black
White-Green
328 5
Signal PathGreen
3
Green-White 3 6 Red
White-Brown
429 7
Signal PathYellow
4
Brown-White 4 8 Black...