Comdial Dxp Plus Instructions Manual

1.2 Detailing E&M Signalling Methods
The multipurpose line board provides two wires for a tip and ring voice circuit and two wires (the E and M line)
to provide control signalling between the systems. When a local DXPPlusputs a request for service from the
remote equipment on the M lead, the remote equipment detects this request on its E lead. As an option it can also
respond by putting an alerting signal on its M lead.
NOTE: Intercom feature codes of one DXP Plus are not available to callers from the...

2.0 Installing Circuit Boards In The Equipment Cabinet
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...

2.2 Installing Multipurpose Line Boards
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
multipurpose line 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 6, you will connect the other end of
this coil cord to the precharge jack on the...

Installing The Multipurpose Line Board
Static Discharge Wrist StrapPower Supply
Pre-charge Port
Multipurpose
Line Board Pre-charge
Port Pre-charge
Cable For
Board
Installation
During
Power Up
PLUS054
Installing The Multipurpose Line Board IMI89–192
Installing The Multipurpose Line Board – 5 

3.0 Connecting The Multipurpose Lines
The FCC specified jack configuration for the multipurpose board line connections to the switched network is the
(USOC)RJ2EXtype and the facility interface code isTL11M. This specified connection is typically a type
66M-nn connector block.
CAUTION
When connecting the lines for multipurpose applications, be sure that you do not reverse the tip and ring
leads.
A 50-pin connector on the multipurpose line board provides its line terminations. You can cable connect the...

Viewing Typical Multipurpose Line Connections
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CLIP TERMINALS
{{ { {
{{ { {
{
{
{ {
Connector BlockTypical Earth GroundNo. 6 Solid
Copper WireGrounding
Terminal
Ferrite
Collar Male 50-pin
Connector Multipurpose
Line Board
Line 1
Line 2
Line 3
Line 4
Line 5
Line 6
Line 7
Line 8
Line 2
Line 1 Line 3
Line 4Loop Start and Ground Start
Loop Start and Ground Start
Loop...

3.1 Understanding The DXP Plus Logical Numbering
Because there are no dedicated station or line ports in the DXPPlus, the system uses an automatic configuration
method to logically number its stations and lines. Automatic configuration occurs after you perform a master clear
on the system.
How automatic configuration works
With automatic configuration, the system does a search for all installed station and line boards in the main and
expansion cabinets, and assigns a logical number for each provided...

3.2 Understanding The Multipurpose Line Connections
25-Pair Connections Wire-Pair
ConnectionsLine
NumberLine Type
Wire Color PairPin
No.Clip
Term.Wire
Name
White-Blue
126 1 Tip
1Loop Start and Ground Start
Blue-White 1 2 Ring
White-Orange
227 3 Tip
2Loop Start and Ground Start
Orange-White 2 4 Ring
White-Green
328 5 Tip
3Loop Start, Ground Start,
and E&M Voice
Green-White 3 6 Ring
White-Brown
429 7 Tip
4Loop Start, Ground Start,
and E&M Voice
Brown-White 4 8 Ring
White-Slate
530 9 Tip
5Loop Start and...

4.0 Understanding Installer/User Information
Regarding FCC Rules And Regulations
This DXPPlusdigital communications system complies with Federal Communications Commission (FCC)
Rules, Part 68. The FCC registration label on the KSU contains the FCC registration number, the ringer
equivalence number, the model number, and the serial number or production date of the system.
Notification To Telephone Company
Unless a telephone operating company provides and installs the system, the telephone operating...

Party Lines And Coin Lines
Local telephone company regulations may not permit connections to party lines and coin lines by anyone except
the telephone operating company.
Troubleshooting
If a service problem occurs, first try to determine if the trouble is in the on-site system or in the telephone
company equipment.  Disconnect all equipment not owned by the telephone company.
If this corrects the problem, the faulty equipment must not be reconnected to the telephone line until the problem
has been...