Comdial Dxp Plus Instructions Manual

Connecting The System
4.1 Connecting The Lines
How to connect
the linesLine terminations to the line boards vary depending upon the line board type.
Terminations for the loop start board are standard modular jack connections. Each
jack on the loop-start board provides termination for two lines. Terminations for
the loop start and the multipurpose boards are through a 50-pin amphenol-type
connector, and the connection for the T1 board is an eight-pin modular jack. The
demarcation point can be a type...

Connect Line
Cable to
Outside Line
Termination Ferrite
Collar
PLUS033
Figure 14: Typical Line Connections (loop-start board shown)
DXP Plus General Description GCA40–130
Connecting The System – 29 

4.2 Connecting The Stations
How to connect
the stationsConnections between the telephones and the station boards are typically via type
66M-xx connector blocks that are cable connected to the station boards (see
figure 15).
The gauge size of the twisted-pair station wiring determines the maximum
distance allowed from the common equipment to the stations.
Station TypeWire Gauge
20 AWG 22 AWG 24 AWG
Digital Telephone 2500 Feet 2000 Feet 1500 Feet
Analog Multiline Telephone 2500 Feet 2000 Feet 1500 Feet...

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CLIP TERMINALS
50
26
1 25
Typical Station
Connector Block
Ferrite
Collar Female 50-pin
Cable Connector
J1 (Male 50-pin
Connector) Typical Analog
Station Board
J2 (Male 50-pin
Connector)
PLUS031
Figure 15: Station Connections
DXP Plus General Description GCA40–130
Connecting The System – 31 

4.3 Connecting The Paging Equipment And Music Sources
The services board provides a standard 6-position modular jack for interfacing external paging
equipment and external music sources to the DXPPlussystem. This jack supplies audio output from
the DXPPlusfor paging purposes and accepts audio input from  two separate audio sources. See Figure
16 for details.
PLUS061
Page
Music 1
Music 2 Front View Of Jack
Front View Of Jacks External
LoudspeakerExternal Paging Port
Pin No.
3 & 4
1 & 6
2 & 5Signal
Paging...

4.4 Connecting A Power Failure Telephone
Each line board provides one standard 6-position modular jack that interfaces an industry-standard
telephone for power failure operation to line 1 of that board (see Figure 17 for jack details).
6
5
4
3
2
1
Typical Industry Standard
Non-Electronic Telephone(Front View Of Jack)Line Board
PLUS065
Figure 17: Line Board Power Fail Telephone Connection
DXP Plus General Description GCA40–130
Connecting The System – 33 

4.5 Connecting The Serial Data Ports
The CPU board provides two serial data ports dedicated for PC-based programming and the
remote-maintenance modem. You can add as many as 16 additional non-dedicated serial data ports by
adding the communications card onto either the services board, the auxiliary board, or either of the two
interface boards. Each of these boards will accept up to two communications cards onto its lower two
slots. The following chart shows the locations for all of the non-dedicated...

4.6 Connecting The Slave Equipment Requiring
Dry-Contact Relay Closure For Actuation
The other ports provide dry-contact relay closures that are under software control. Figure 19 illustrates
the relay jack details.
PLUS063
Front View Of JacksCommon Audible Interface Relays
Relay
JackJ3
J4
Pin
No.
1
1 2
2 3
3 4
4 5
5 6
6No Contact
No Contact
No Contact
No ContactRelay 1
Relay 2
Relay 2
Relay 1
Relay 3
Relay 3Relay 4
Relay 4Signal
Relay 1
Relay 3Relay 2
Relay 4Services
Board
(Wiring shown for low current...

Knowing The Specifications
System Capacity (Maximums):
Attendant Consoles:
Telephone Attendant Unlimited
Personal Computer Attendant 4
(Total Control)
Conferencing:(Simultaneous - without conference circuit board)
32 total conferencing circuits
Each conference party uses 2 circuits
Each SOHVA or Service Observe uses 3 circuits
Maximum of two 7-way conference (14 circuits)
Each conference circuit board adds 5 three-way
conferences
DSS/BLF Consoles:
Assigned To Each Station 4 (Each console uses a separate...

Subdued Off-Hook Voice Announce Groups:
Receive 16
Transmit 16
SMDA Call Storage Capacity:
with 2 megabytes of memory Approximately 15,000 calls
with 4 megabytes of memory Approximately 30,000 calls
Speed Dials:
System Speed Dial 500 maximum
Station Speed Dial Numbers Per Set 10
Station Speed Dial Sets Per Station 1 at default , 1 minimum, 10 maximum
Speed Dial Sets Per System 960
Stations:144 (main cabinet) 176 (upper expansion cabinet)
160 (lower expansion cabinet)
Station Class Of Service: 32
Toll...