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 66M-xx connector block or individual 6-position
modular jacks. The wiring that you route between the demarcation-point and the
line board termination should be #24 AWG or larger twisted-pair wiring (see
figure 14 for line board connections).
How to protect
the linesTransient voltage spikes, if induced onto CO or CENTREX lines, can travel
through the cable and into the common equipment. The telephone company offers
basic protection against this condition, but it is usually designed to protect the
central office circuits. While this CO or CENTREX service will also provide
some protection to the common equipment, you should not rely upon it for total
protection. To help ensure that external over-voltage surges do not damage the
system, Comdial recommends that you install and properly ground gas discharge
tubes, or similar primary protection devices, on all lines.
Each line board is shipped with a ferrite collar. Bundle the line cables together
and snap the collar around the bundle to provide protection against radio
frequency interference.
4
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							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
Analog Single-Line Proprietary
Telephone4000 Feet 3500 Feet 3000 Feet
Industry-Standard Telephone 4000 Feet 3500 Feet 3000 Feet
Protecting the
connectionsIf spare conductors exist in the cables that are run between the station boards and
the 66M-xx connector blocks, it is a good practice to connect them to earth
ground to help prevent them from inducing radio frequency and/or AC
interference into the system.
Each station interface board is shipped with an appropriate supply of ferrite
collars. Snap one of these around each station cable to provide protection against
radio frequency interference.
Installing
a DSS / BLF
consoleInstall a DSS/BLF Console at any station in the system as a companion to a
telephone. There is no limit to the maximum number of consoles that can be
installed on a system. When you install a console, you must also define the station
as a console with programming.
GCA40–130 DXP Plus General Description
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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 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
Music 2
Music 2
Audio Input To
Paging Amplifier
Relay 1
Relay 3Relay 2
Relay 4Services
Board
Enable Input
(If Required) External Paging
AmplifierSPKR Output
Common Audible Interface Relays
Relay
Jack
J3
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 4Signal1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
Figure 16: Paging Equipment and Music Source Interface
GCA40–130 DXP Plus General Description
32 – Connecting The System 
						

							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 serial data ports (Figure 18
shows the pin-outs for serial data ports).
Serial Data Port Designation DXOPT–COM Location
Serial Data Ports 3–10 Lower two slots on the services board
Serial Data Ports 11–18Lower two slots of one of the following:
—The interface board in the upper expansion cabinet,
—The interface board in the lower expansion cabinet,
—The auxiliary board in the main cabinet.
In order to use all 16 non-dedicated serial data ports you must install four communications cards.
PLUS044
1
2
3
4
5
6
1
2
3
4
5
6Serial Modem Port
Maintenance Port
Modular Jacks
Pin 1 = Request To Send
Pin 2 = Clear To Send
Pin 3 = Receive Data
Pin 4 = Transmit Data
Pin 5 = Signal Ground
Pin 6 = Frame Ground
(Front View of Jacks)
NOTES:
1.
2.
Some data devices require
CTS signal for proper
operation. Route to device
as needed. Maximum distance between
each ofthe two dedicated
serial data ports and its
external data equipment
is 25 feet.
Figure 18: Serial Data Port Connections
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							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 application - see caution text)
Wire to
Common
Audible
Interface
Relay
Wire to
Common
Audible
Interface
RelaySignalling
Device
Signalling
DevicePower
Source for
Signalling
DeviceAC or DC
Input as
Required
AC or DC
Input as
Required
AC or DC
Input as
Required 24V @ 1A Max.
48V @ .5A Max.
24V @ 1A Max.
48V @ .5A Max. (Wiring shown with slave relay connection for high current application - see caution text)
Power
Source for
Slave
Relay
Voltage Clamping Diode
Recommended
Slave
RelayPower
Source for
Signalling
Device
CAJS007
1
2
3
4
5
6
1
2
3
4
5
6
Figure 19 Slave Equipment Connections
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							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 station port)
Intercom:
Conversations (Simultaneous) Non-blocking
Paths Non-blocking
Stations Assigned To Same Group 480
Intercom Number
Simultaneous Rings On Same Group 480
Intercom Number
Lines:72 (main cabinet) 88 (expansion cabinet 1)
80 (expansion cabinet 2)
Line Groups(With unlimited members): 16
Paging:
External Paging Ports 1 plus 4 relays
Internal/External Paging Zones or All Call 8
Station Capacity Per Zone 480
Park Orbits:9
Power Fail Circuits:One per line board
Ringing Capacities(Simultaneous):
Proprietary Telephones 480
Single-line IST 32 per ring phase, max. of 96 per cabinet, total of 288
5
GCA40–130 DXP Plus General Description
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							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 Restriction Table Entries: 400
Traffic Capacities:36 CCS (1 Erlang), non-blocking
Power Requirements:
Domestic AC Power Supply 87 - 130 VAC Single phase -all models
6A maximum AC current
600W
700VA
International Power Supply87 - 130 VAC at 50/60 Hz, externally switchable,
187 - 264 VAC at 50/60 Hz
5A maximum AC current
600W
700VA
(Approved to IEC 950 International Safety Standards)
Battery Back-up Reserve Powers:
1 Hour minimum for fully loaded system (main cabinet plus two expansion cabinets)
Domestic Battery Charger Input voltage: 87–130 VAC single phase
3A maximum AC current
200W
320VA
Switchable Battery Charger Input voltage: 87–130 VAC 50/60 Hz, or
187–264 VAC 50/60 Hz externally—switchable
3A Maximum AC current
200W
256VA
DXP Plus General Description GCA40–130
Knowing The Specifications – 37