Nitsuko Portrait 824 Hardware Manual

							EXTERNALPAGING AND PAGE RELAYS
4-9
Using External Paging
Each Auxiliary PCB has two External Paging audio outputs and two
associated control relays. The External Page zones are two way which
provide for the ability to do talk back paging (no additional program-
ming required). The audio outputs are connected to audio inputs on
customer-provided paging systems. In some paging systems, you can
use the control relays to automatically turn the amplifiers on and off.
The control relays are normally open and close whenever a user calls
the External Paging zone.
Installing External Paging and Page Relays (Figure 4-5)
CAUTION
Be sure the audio input requirements of the paging equipment are
compatible with the audio output specifications of the system.
Output Impedance: 600 Ohms
Output Level: Nominal 250 mV(-10 dBm)
Maximum Output: 400 mVRMS
Minimum Initial Contact Resistance:  50 mOhms
Relay Contact: 250 mA@ 24 VDC
1.Locate an available 2-pin DDKconnector in an auxiliary (C)block.
2.For the DDKconnector chosen, cross-connect the associated wire
pair from the C block to the cross-connect block.
3.Install bridging clips as required.
4.Connect two leads to the paging system audio inputs.
5.For External Zone 1, loop the cable once through a ferrite bead
(supplied with the Auxiliary PCB) then plug the DDK connectors
into the Auxiliary PCB. One connector is plugged into the connec-
tor on the PCB labeled SPK1, the other goes to CTR1.
6.For External Zone 2, loop the cable once through the same ferrite
bead used for External Zone 1, then plug the DDK connectors into
the Auxiliary PCB. One connector is plugged into the connector on
the PCB labeled SPK2, the other goes to CTR2.
7.Adjust the volume level of each External Zone. VR1 controls zone
1 (accessed by dialing 86), VR2 controls zone 2 (accessed by dial-
ing 87).
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							EXTERNALPAGING AND PAGE RELAYS
4-10Figure 4-5  CONNECTING EXTERNAL PAGING/RELAYS
Figure 4-6  CONNECTING EXTERNAL PAGING
One-Pair Cross-Connect
DDK 
Connector To External Page
audio output on 
Auxiliary PCB
25-Pair DDK
Installation CableC Block
Cross
Connect
BlockOutput to
paging
system
control
inputs
82400 - 10
One-Pair Cross-Connect
DDK 
Connector To Control Relay
on Auxiliary PCB
25-Pair DDK
Installation CableC Block
Cross
Connect
BlockOutput to
paging
system
control
inputs
82400 - 9
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							EXTERNALPAGING AND PAGE RELAYS
4-11
Figure 4-7  ATTACHING THE FERRITE BEAD
Figure 4-8  CONNECTING CONTROL RELAYS TO THEAUXILIARYPCB
82400 - 21
EXMOH CTR2 RL2
BGM SPK2 RL1
DH2 CTR1 ALM2
DH1(SPK2)
(SPK1)
(DH2)
(DH1)
Auxiliary PCB AmplifierAmplifier
SPK1/SPK2: External paging audio signal output.
CTR1/CTR2: Normally open relay contacts. If a zone
isactivated,thecontactsclose. Paging Speaker #2Paging Speaker #1
SPK1 ALM1
VR3 VR4 VR1 VR2 CN3 CN2 CN1
Ferrite bead
To Paging
or Door Box
connection
Loop each cable once
through Ferrite bead
DDK connectors
to Auxiliary PCB
82400 -53
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							DOOR BOX
4-12
Using the Door Box
Each Auxiliary PCB supports two Door Boxes. In addition, you can
connect each circuitÕs control relay to an electric door strike. This
allows an extension user to remotely activate  the door strike while talk-
ing to a visitor at the Door Box. The control relays are normally open.
Installing a Door Box (Figure 4-9)
1.Locate an available 2-pin DDK connector in an auxiliary (C) block.
2.For the DDK connector chosen, cross-connect the associated wire
pair from the C block to the cross-connect block.
3.Connect leads from lugs 1 and 2 on the Door Box to the cross-con-
nect block. Be sure to maintain the proper polarity.
4.Loop the cable once through a ferrite bead (supplied with the
Auxiliary PCB), then plug the DDK connector into the Door Box
(1 or 2) connector on the Auxiliary PCB. The first Door Box is
labeled DH1 on the PCB. The second Door Box is labeled DH2.
If both Door Boxes are to be used, loop both cables through
the same ferrite bead.
5.Install bridging clips as required.
6.Use VR3 or VR4 to adjust the volume of the Door Box. VR3 cor-
responds to Door Box 1, VR4 corresponds to Door Box 2.
Figure 4-9  CONNECTING A DOOR BOX
15
6 L
C
T
T
234LF
To Door Chime Box 1Rear view
To Door
Chime Box 221
22
23
24
* typical installation
RED-BRN
BRN-RED
RED-SLT
SLT-RED*
*
Misc Block
Holes for
mounting screws
920 - 159A
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							DOORBOX
4-13 Figure 4-10  ATTACHING THE FERRITE BEAD
Figure 4-11  CONNECTING A DOOR BOX
One-Pair Cross-Connect
DDK 
Connector To DHI or DH2 connector
on Auxiliary PCB
25-Pair DDK
Installation CableC Block
Cross
Connect
BlockOutput to
door box
82400 - 42
Ferrite bead
To Paging
or Door Box
connection
Loop each cable once
through Ferrite bead
DDK connectors
to Auxiliary PCB
82400 -53
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							DOOR BOX
4-14
Installing Door Strike Control Relays(Figure 4-12)
CAUTION
Be sure the requirements of the door strike are compatible with the
control relay output specifications of the system.
Contact Configuration: Normally open
MaximumLoad: 250 mA@ 24 VDC
Maximum Initial Contact Resistance: 50 mOhms
1.Locate an available 2-pin DDK connector in an auxiliary (C)
block.
2.For the DDK connector chosen, cross-connect the associated wire
pair from the C block to the cross-connect block.
3.Connect two leads from the door strike to the associated terminals
on the cross-connect block.
If the door strike is a high current device, you may have to
install an auxiliary relay that powers the door strike relay.
4.Plug the DDK connector into the Auxiliary PCB connector labeled
RL1 or RL2.  RL1 controls the door strike relay for Door Box 1,
RL2 controls Door Box 2.
5.Install bridging clips as required.
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							DOOR BOX
4-15 Figure 4-12  CONNECTING TO THE DOOR STRIKE
Figure 4-13  CONNECTING DOOR BOX/DOOR STRIKE RELAYS TO THE
AUXILIARYPCB
82400 - 43
EXMOH CTR2 RL2DH1 SPK1 ALM1BGMSW2
INT(MOH)
(BGM)EXTOFFON SW1
SPK2 RL1DH2 CTR1 ALM2(SPK2)(SPK1)(DH2)(DH1)
Auxiliary PCBDoor Box
To Door Strike
Terminals
VR3 VR4 VR1 VR2 CN3 CN2 CN1
One-Pair Cross-Connect
DDK 
Connector To Control Relay
on Auxiliary PCB
25-Pair DDK
Installation CableC Block
Cross
Connect
BlockOutput to
door strike
82400 - 8
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							MUSIC SOURCES
4-16
Music on Hold and Background Music
Music on Hold (MOH) provides music to callers on Hold and calls
parked in orbit. The systemÕs default setting provides an internal
(synthesized) MOH music source, or a customer-provided music
source connected to the Auxiliary PCB can be used instead (see
below).
Background Music sends music from a customer-provided music
source (via a connector on the Auxiliary PCB) to keyset speakers.
Installing a Music Source on the Auxiliary PCB (Figure 4-14)
CAUTION
Be sure the music source is compatible with the MOH and BGM
input specifications on the CPU PCB.
Input Impedance: 600 Ohm
Input Level: Nominal 250 mV(-10 dBm)
Maximum Input: 1VRMS
1.Locate an available 2-pin DDK connector in an auxiliary (C) block.
2.For the DDK connector chosen, cross-connect the associated wire
pair from the C block to the cross-connect block.
3.Connect two leads from the customer-provided music source to the
associated terminals on the cross-connect block.
4.ForMusic on Hold . . .
a. Plug the DDK connector into the EXMOH input on the
Auxiliary PCB.
b.Set the SW2 strap to the EXTposition.
If MOH not is not required (either from an external source or
from the systemÕs synthesized MOH), set the SW2 strap in the
EXTposition and do not plug any music source into the
EXMOHinput on the Page/Door Box card.
ForBackground Music . . .
a.Plug the DDK connector into the BGM input on the Auxiliary 
PCB.
b.Set the SW1 strap to the ONposition. If BGM is not required,
set the SW2 strap to the OFFposition.
5.Install bridging clips as required.
6.Adjust the volume for the MOH and BGM on the external sources.
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							MUSIC SOURCES
4-17 Figure 4-14  CONNECTING MUSIC SOURCES
Figure 4-15  CONNECTING TO THE AUXILIARY PCB
82400 - 22
EXMOH CTR2 RL2DH1 SPK1 ALM1BGMSW2
SW2
INT
INT
Off
(MOH)
(MOH)
(BGM)
(BGM)
EXT
EXT
On
OFF
OFF
ON
ON
SW1
SW1
SPK2 RL1DH2 CTR1 ALM2(SPK2)(SPK1)(DH2)(DH1)
Auxiliary PCB External MOH SourceBGM Source
The relay contacts RL1 and 
RL2 can be used as 
MOH/BGM device control. 
The remote control terminal 
on the device must be 
connected to these contacts. 
(see Program 56)
VR3 VR4 VR1 VR2 CN3 CN2 CN1
One-Pair Cross-Connect
DDK 
Connector To MOH or BGM
on Auxiliary PCB
25-Pair DDK
Installation CableC Block
Cross
Connect
BlockTo
music
source
82400 - 7
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							POWER FAILURE TELEPHONES
4-18
Power Failure Cut-Through (Figure 4-16)
When system AC power fails, the 4 PF XFER PCB automatically
connects up to four trunks to the Power Failure Telephones.
Installing a Power Failure Telephone
1.Plug a 2-pin DDK connector to a COCN connector on the CPU or
2CO/8STAPCB. Plug the other end into a PFCON connector on
the 4 PFXFER PCB.
2.Plug a 2-pin DDKconnector to a COCN connector on the 4 PF
XFER PCB. Connect the other end to the 625 modular jack lead-
ing to the RJ11C telco jack.
3.  Plug a 2-pin DDK connector into the SLTCN connector on the 4
PF XFER PCB. Connect the other end to the auxiliary (C) block.
4.Cross-connect the associated wire pair from the C block to the
cross-connect block.
5.Install a modular jack for the Power Failure Telephone within six
feet of the telephoneÕs location.
6.Run one-pair of 24 AWG station cable from the cross-connect
block to the Power Failure Telephone modular jack.
7.Terminate the station cable WHT/BLU - BLU/WHTleads to the
GRN and RED lugs in the modular jack.
8.Install bridging clips as required.
9.Plug a line cord into the Power Failure Telephone and the phoneÕs
modular jack.
No programming is required to enable the Power Failure
Telephone.
To test the PowerFailure Telephone:
1.Make sure the Switch-1 on the CPU PCB is set to the right side.
This ensures that your programming and configuration is
retained when you power down the system.
2.Power down the system.
3.At the Power Failure Telephone, lift the handset and place a test call.
The call will go out on the trunk in the 4 PF XFER PCB to
which the telephone is connected.
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