Nitsuko 24i/28i/124i/384i Hardware Manual

							4. Optional
Equipment4-9
EXTERNAL PAGING AND PAGE RELAYS
Installing External Paging Control Relays (Figure 4-5)
CAUTION
Be sure the control circuit requirements of the paging equip-
ment are compatible with the control relay output specifications
of the system.
Contact Configuration: Normally open
Maximum Load: 60 mA @ 30 VDC
10 mA @ 90 VDC
Maximum Initial Contact Resistance: 50 mOhms
1. Locate an available DDK connector in a trunk (A) block or
station (B) block.
Local codes may prevent you from using a DDK con-
nector on the A block for optional equipment.
2. For the DDK connector chosen, cross-connect the associated
wire pair from the A or B block to the cross-connect block.
Figure 4-5  CONNECTING CONTROL RELAYS
Continued on next page . . .
One-Pair Cross-Connect
DDK 
Connector To Control Relay
on PGDU PCB
25-Pair DDK
Installation CableB Block
Cross
Connect
BlockOutput to 
paging
system 
control 
inputs
926-50 
						

							4. Optional
Equipment
4-10
EXTERNAL PAGING AND PAGE RELAYS
Installing External Paging Control Relays (Cont’d)
3. Connect two leads from the paging system control inputs to
the associated terminals on the cross-connect block.
4. Plug the DDK connector into the Control Relay (1-4) con-
nector in the PGDU PCB (Figure 4-6).
5. Install bridging clips as required.
There is no programming required.
6. Write down your connection on Figure 3-4.
Figure 4-6  CONNECTING TO THE PGDU
92001 - 43
Page/Door Box (PGDU) PCBMode Switches
for each circuit
Door Box / External Page
Volume Controls
DH
CN3
CN4
DHDHDH
PGPGPGPG
1 2 3 4VR1Door Box 4 - External Page 4
Door Box 3 - External Page 3
Door Box 2 - External Page 2
Door Box 1 - External Page 1 Control Relay 4
Control Relay 3
Control Relay 2
Control Relay 1
VR2
VR3
VR4 
						

							4. Optional
Equipment4-11
DOOR BOX
Using the Door Box
Each PGDU PCB audio output can optionally support an analog
Door Box. In addition, you can connect each circuit’s control
relay to an electric door strike. This allows an extension user to
remotely activate  the door strike while talking to a visitor at
the Door Box. The control relays are normally open. The sys-
tem can have up to eight Door Boxes and one Chime Tone.
Note:A PGDU circuit used for an analog Door Box cannot
also be used for External Paging.
Installing a Door Box (Figure 4-7)
1. Locate an available DDK connector in a trunk (A) block or
station (B) block.
Local codes may prevent you from using a DDK con-
nector on the A block for optional equipment.
2. For the DDK connector chosen, cross-connect the associated
wire pair from the A or B block to the cross-connect block.
3. Connect leads from lugs 1 and 2 on the Door Box to the
cross-connect block. Be sure to maintain the proper polarity.Figure 4-7  CONNECTING A DOOR BOX
Continued on next page . . .
To Door BoxRT
Rear view
Holes for
mounting 
screws One-Pair Cross-Connect
DDK 
ConnectorTo Door Box
circuit on 
PGDU PCB
25-Pair DDK
Installation CableB BlockCross
Connect
Block
926-51
15
6 L
CT
T
234
LF 
						

							4. Optional
Equipment
4-12
DOOR BOX
Installing a Door Box (Cont’d)
4. Plug the DDK connector into the Door Box (1-4) connector
on the PGDU PCB (Figure 4-8).
5. Install bridging clips as required.
6. Make sure the switch for the associated Door Box is set to
DH (notPG).
7. Write down your connection on Figure 3-4.
8.To program the Door Box . . .
With the default settings, 
The Door Box number is the same as the circuit number (e.g.,
the lowest numbered circuit you connect is Door Box 1.)
1502 - Door Box Ring Assignments
Determine which Door Boxes (1-8) should ring which exten-
sions (0 = no ring, 1 = ring).
1503 - Door Box Chime Patterns
Set the chime pattern (1) for each Door Box.
Refer to Door Boxin the Software Manual for more details.
9. After programming the Door Box, make a test call.
Use VR1-VR4 to adjust the volume of the Door Box
(For example, VR1 corresponds to Door Box 1).
Figure 4-8  CONNECTING TO THE PGDU
92001 - 43
Page/Door Box (PGDU) PCBMode Switches
for each circuit
Door Box / External Page
Volume Controls
DH
CN3
CN4
DHDHDH
PGPGPGPG
1 2 3 4VR1Door Box 4 - External Page 4
Door Box 3 - External Page 3
Door Box 2 - External Page 2
Door Box 1 - External Page 1 Control Relay 4
Control Relay 3
Control Relay 2
Control Relay 1
VR2
VR3
VR4 
						

							4. Optional
Equipment4-13
DOOR BOX
Installing Door Strike Control Relays (Figure 4-9)
CAUTION
Be sure the requirements of the door strike are compatible with
the control relay output specifications of the system.
Contact Configuration: Normally open
Maximum Load: 60 mA @ 30 VDC
10 mA @ 90 VDC
Maximum Initial Contact Resistance: 50 mOhms
1. Locate an available DDK connector in a trunk (A) block or
station (B) block.
Local codes may prevent you from using a DDK con-
nector on the A block for optional equipment.
2. For the DDK connector chosen, cross-connect the associated
wire pair from the A or B block to the cross-connect block.
Figure 4-9  CONNECTING TO THE DOOR STRIKE
Continued on next page . . .
One-Pair Cross-Connect
DDK 
Connector To Control Relay
on PGDU PCB
25-Pair DDK
Installation CableB Block
Cross
Connect
BlockOutput to
door strike
926-52 
						

							4. Optional
Equipment
4-14
DOOR BOX
Installing Door Strike Control Relays (Cont’d)
3. Connect two leads from the door strike to the associated ter-
minals 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 Control Relay (1-4) con-
nector on the PGDU PCB (Figure 4-10).
5. Install bridging clips as required.
The Door Strike control relays do not require any pro-
gramming.
6. Write down your connection on Figure 3-4.
Figure 4-10  CONNECTING TO THE PGDU
92001 - 43
Page/Door Box (PGDU) PCBMode Switches
for each circuit
Door Box / External Page
Volume Controls
DH
CN3
CN4
DHDHDH
PGPGPGPG
1 2 3 4VR1Door Box 4 - External Page 4
Door Box 3 - External Page 3
Door Box 2 - External Page 2
Door Box 1 - External Page 1 Control Relay 4
Control Relay 3
Control Relay 2
Control Relay 1
VR2
VR3
VR4 
						

							4. Optional
Equipment4-15
MUSIC SOURCES
Music on Hold and Background Music
Music on Hold (MOH) provides music to callers on Hold and
calls parked in orbit. The MOH music source can be internal
(synthesized), from an ACI port (see page 4-28) or via a con-
nector on the CPRU (see below).
On the 28i system, Background Musicand Music on Holduse
the same music source. As BGM requires an external music
source, MOH must also use the external music source. MOH
can only use the internal synthesized  music if BGM is not
required.
Installing a Music Source on the CPRU PCB
(Figure 4-11)
CAUTION
Be sure the music source is compatible with the MOH and
BGM input specifications on the CPRU PCB.
Input Impedance: 600 Ohm
Input Level: Nominal 250 mV (-10 dBm)
Maximum Input: 1V RMSFigure 4-11  CONNECTING MUSIC SOURCES
Continued on next page . . .
One-Pair Cross-Connect
DDK 
Connector To MOH or BGM
on PGDU PCB
25-Pair DDK
Installation CableB Block
Cross
Connect
BlockTo
music
source
926-53 
						

							4. Optional
Equipment
4-16
MUSIC SOURCES
Installing a Music Source on the CPRU PCB
(Cont’d)
1. Locate an available DDK connector in a trunk (A) block or
station (B) block.
Local codes may prevent you from using a DDK con-
nector on the A block for optional equipment.
2. For the DDK connector chosen, cross-connect the associated
wire pair from the A or B 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.For Music on Hold .. .
Plug the DDK connector into the MOH input on the CPRU
PCB (Figure 4-12).
With the 124i system, for Background Music .. .
Plug the DDK connector into the BGM input on the CPRU
PCB (Figure 4-12).
5. Install bridging clips as required.
6. For Music on Hold only, strap the jumper on the CPRU PCB
to enable external MOH.7. Write down your connections on Figure 3-4.
8.To program Music on Hold . . .
With the default settings,
Music on Hold uses the internal Minuet selection.
0302 - Item 1: Music on Hold Tone
Enter 0 to enable external MOH.
0914 - Setting the Music on Hold Source
For each trunk, enter 254 to enable the CPRU MOH source.
Refer toMusic on Holdin the Software Manual for additional
details.
To program Background Music on the 124i . . .
No programming to enable Background Music is required.
Refer toBackground Musicin the Software Manual for addi-
tional details.
To program Background Music on the 124i . . .
a.  Enter programming mode using the password:
6587846 (This password must also be used if pro-
gramming the system with the PC Program.)
Continued on next page . . . 
						

							4. Optional
Equipment4-17
MUSIC SOURCES
Installing a Music Source on the CPRU PCB
(Cont’d)
b.  Enter Program 0108 - Service Tone Setup, Item 18:
BGM. Change the TIMESLOT to 28 (the default setting
is 29).
c.  Set the MOH pin on the CPRU to EXTERNAL.
d.  Connect an external music source to the External Music
on Hold Input on the CPRU.
Background Music sends music from a customer-pro-
vided music source (via a connector on the CPRU) to
keyset speakers.
Note:ACI and CPRU MOH installations require a
customer-provided music source.
9. Use the MOH and BGM volume controls on the CPRU PCB
to adjust the music volume, if required.
Figure 4-12  CONNECTING TO THE CPRU
92001 - 44
MOH
Volume ControlBGM
Volume ControlMOH Input BGM Input
INT INTEXT EXT
Internal MOH
Enabled
External MOH
Enabled 
						

							4. Optional
Equipment
4-18
POWER FAILURE TELEPHONES
Power Failure Cut-Through(Figure 4-13)
When system AC power fails, the ATRU PCB automatically cuts
through trunk 1 to the Power Failure Telephone connection.
1. Locate an available DDK connector in a trunk (A) block or
station (B) block.
Local codes may prevent you from using a DDK con-
nector on the A block for optional equipment.
2. For the DDK connector chosen, cross-connect the associated
wire pair from the A or B block to the cross-connect block.
3. Install a modular jack for the Power Failure Telephone with-
in six feet of the telephone’s location.
4. Run one-pair of 24 AWG station cable from the cross-con-
nect block to the Power Failure Telephone modular jack.
5. Terminate the station cable WHT/BLU - BLU/WHT leads to
the RED and GRN lugs in the modular jack.
6. Install bridging clips as required.
Figure 4-13  CONNECTING A POWER FAILURE
TELEPHONE
625
Modular
JackPower
Failure
Telephone
BLK YEL
RED
GRN BLU-WHT
WHT-BLU
One-Pair Cross-Connect
DDK 
ConnectorTo Power 
Failure
Telephone 
connector
on ATRU PCB
25-Pair DDK
Installation CableB BlockCross
Connect
Block
926-54