Nitsuko Portrait 308 Hardware Manual

CONNECTING EXTENSIONS
Station Connections (Figure 3-4)
The CPU has 4-pin DDK connectors for eight stations. The
stations can be a combination of keysets or single line tele-
phones, but the system can only accept a maximum of six
single line telephones (ports 10 and 11 can only use keysets).
Refer to Part 4: Installing Optional Equipment for
instructions on connecting a power failure telephone.
Figure 3-4  STATION CONNECTIONS
1.Following the conventional color code, insert the DDK
connectors into the...

CONNECTING EXTENSIONS
2.Install a modular jack for each extension within six feet
of the telephoneÕs location. See Figure 3-5.
3.For each keyset, run two-pair 24 AWG station cable from
the cross-connect block to the modular jack.  For each
single line phone, run one-pair 24 AWG station cable
from the cross-connect block to the modular jack.
4.Terminate the station cable to the modular jack lugs:
WHT-BLU to GREEN lug
BLU-WHTto RED lug
WHT-ORN to BLACK lug *
ORN-WHTto YELLOWlug *
* Lug not used when...

CONNECTING EXTENSIONS
Figure 3-6  CONNECTING SINGLE LINE TELEPHONES
625
Modular
Jack
Power
Failure
Telephone
BLK YEL
REDGRN BLU-WHT
WHT-BLU
One-Pair Cross-Connect
25-Pair DDK
Installation CableC BlockCross
Connect
Block
82400 - 2
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CONNECTING TRUNKS
Trunk Connections (Figure 3-7)
The CPU has 2-pin DDK connectors for three loop start CO
trunks.
Refer to Part 4: Installing Optional Equipment for
instructions on connecting a power failure tele-
phone.
Figure 3-7  TRUNK CONNECTIONS
1.Following the conventional color code, insert the DDK
connectors into the PCB. For example, the CPU would
have these connections:
TrunkDDK Connector Pair
1WHT-BLU / BLU-WHT
2WHT-ORN / ORN-WHT
3WHT-GRN / GRN-WHT
2.For each trunk, run one pair of wires from...

CONNECTING TRUNKS
Figure 3-8  CONNECTING TRUNKS
82500 - 2
To CO connector
on CPU
DDK
Connector
25-Pair DDK
Installation Cable625
Modular
Jack
Line
CordTo Central OfficeTelco
RJ11C
BLU-WHT WHT-BLU
RED GRN
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- ForYourNotes -
3-12
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Section 4
Installing Optional Equipment
In this section. . .  . . . . . . . . . . . . . . . . . . .Page
Alarm Sensors  . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Using External Alarm Sensors  . . . . . . . . . . . . . . . .4-3
Installing an External Alarm Circuit  . . . . . . . . . . . .4-3
External Paging and Page Relays  . . . . . . . . . . .4-5
Using External Paging  . . . . . . . . . . . . . . . . . . . . . . .4-5
Installing External Paging and Page Relays  . . . . . .4-5
Door Box  . ....

4-2
4. Installing Optional
Equipment
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ALARM SENSORS
Using External Alarm Sensors
The Auxiliary (3DHEXU) PCB provides one alarm circuit
which detects a make (open) or break (closed) contact
from an alarm. Programming determines if the alarm input
requires an open or closed circuit.
An alarm detection causes the system to send a signal to sta-
tions programmed to receive the alarms. The alarm signal
can also be sent to external paging speakers.
Installing an External Alarm Circuit (Figure 4-1)
CAUTION
Be sure the requirements of the alarm...

ALARMSENSORS
Figure 4-1  CONNECTING AN ALARM
Figure 4-2  CONNECTING TO THE AUXILIARY PCB
82500 - 14
Auxiliary PCB
Alarm Input
DH2 DH1 EXMOH SPK CTR RL2 RL1 ARM (MOH)
EXT
INT
SW1
One-Pair Cross-Connect
DDK 
Connector To alarm input
on Auxiliary PCB
25-Pair DDK
Installation CableC Block
Cross
Connect
BlockInput from
alarm
system
82400 - 11
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