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

							3. Installing
Extensions and Trunks
3-12CONNECTING TRUNKS
DID Trunk (2DIDU) PCB Connections(Figure 3-12)
The DID PCB has DDK connector for two Direct Inward Dial
(DID) trunk circuits.
1. Following the conventional color code, insert the DDK
connectors into CO1 and CO2 on the PCB. For example,
the first 2DIDU PCB in the system would have these 
connections:
Trunk DDK Connector Pair
1 WHT-BLU (tip 1) / BLU-WHT (ring 1)
2 WHT-ORN (tip 2) / ORN-WHT (ring 2)
Write down the connections for each 2DIDU PCB in Figure
3-4. Make additional copies of Figure 3-4 as required.
2. For each trunk, run one pair of cross-connect wires between
the pins on the cross-connect block and the CPE (customer
side) of the telco’s RJ21X (Figure 3-12).
3. Install bridging clips as required.Figure 3-12  DID TRUNK CONNECTIONS
Continued on next page . . . 
						

							3. Installing
Extensions and Trunks3-13CONNECTING TRUNKS
Figure 3-13  DID TRUNK CONNECTIONS
25-Pair Cable
to Central Office
25-Pair DDK
Installation CableTelco
RJ21X One-Pair
Cross Connect
A
Block
926 - 46 
						

							4. Optional
Equipment
Section 4, INSTALLING OPTIONAL EQUIPMENT
In this section  . . . . . . . . . . . . . .Page2-OPX Module  . . . . . . . . . . . . . . . . . . . . .4-22
Using the 2-OPX Module . . . . . . . . . . . . . . . 4-22
Installing the 2-OPX Module . . . . . . . . . . . . 4-22
VAU and Expansion Modules  . . . . . . . . . .4-24
Using the VAU Module . . . . . . . . . . . . . . . . 4-24
Installing the VAU Module . . . . . . . . . . . . . . 4-24
Installing the Plug-in Expansion Board . . . . . 4-26
3-ACI Module  . . . . . . . . . . . . . . . . . . . . . .4-27
Using the 3-ACI Module . . . . . . . . . . . . . . . 4-27
Installing the 3-ACI Module . . . . . . . . . . . . . 4-27
Installing the 3-ACI Module for Music
on Hold and External Paging . . . . . . . . . . 4-28
REJ Recording Jack  . . . . . . . . . . . . . . . . .4-31
Using the REJ Recording Jack . . . . . . . . . . . 4-31
Installing the REJ . . . . . . . . . . . . . . . . . . . . . 4-31
Wall-Mount Kit  . . . . . . . . . . . . . . . . . . . . .4-35
Using the Wall-Mount Kit. . . . . . . . . . . . . . . 4-35
Installing the Wall-Mount Handset Hanger
for 926 Series Phones . . . . . . . . . . . . . . . . 4-35
In this section  . . . . . . . . . . . . . .PageAlarm and Fax Sensors  . . . . . . . . . . . . . . .4-3
Using External Alarm and Fax Sensors . . . . . . 4-3
Installing an External Alarm or 
Fax Sensor Circuit . . . . . . . . . . . . . . . . . . . 4-4
External Paging and Page Relays . . . . . . . .4-6
Using External Paging . . . . . . . . . . . . . . . . . . 4-6
Installing External Paging . . . . . . . . . . . . . . . . 4-6
Installing External Paging Control Relays. . . . 4-9
Door Box  . . . . . . . . . . . . . . . . . . . . . . . . . .4-11
Using the Door Box . . . . . . . . . . . . . . . . . . . 4-11
Installing a Door Box . . . . . . . . . . . . . . . . . . 4-11
Installing Door Strike Control Relays . . . . . . 4-13
Music Sources  . . . . . . . . . . . . . . . . . . . . . .4-15
Music on Hold and Background Music . . . . . 4-15
Installing a Music Source on the CPRU PCB 4-15
Power Failure Telephones  . . . . . . . . . . . . .4-18
Power Failure Cut-Through . . . . . . . . . . . . . 4-18
DSS Console  . . . . . . . . . . . . . . . . . . . . . . .4-20
Using a DSS Console . . . . . . . . . . . . . . . . . . 4-20
Installing a DSS Console . . . . . . . . . . . . . . . 4-20
4-1 
						

							4. Optional
Equipment
4-2
In this section  . . . . . . . . . . . . . .PageWall-Mount Kit (Cont.)
Installing the Wall-Mount Handset Hanger
for 922 Series Phones . . . . . . . . . . . . . . . . 4-36
Wall-Mounting a Key Telephone on 
926/922 Sereis Phones . . . . . . . . . . . . . . . 4-37
Using the Desk Stand on 926/922 
Series Phones . . . . . . . . . . . . . . . . . . . . . . 4-38
Installing the Wall-Mount Handset Hanger 
for i-Series Phones . . . . . . . . . . . . . . . . . . 4-39
Wall-Mounting i-Series Phones. . . . . . . . . . . 4-40
Using the Desk Stand on i-Series Phones . . . 4-42 
						

							4. Optional
Equipment4-3
ALARM AND FAX SENSORS
Using External Alarm and Fax Sensors
The 4PGDU PCB provides four alarm/fax circuits which you
can program to detect a make or break closure from an alarm,
fax machine or modem.
When a 4PGDU circuit is used for alarm . . .
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.When a 4PGDU is used for fax sharing . . .
Fax sharing allows system users to share a line also used by a
fax machine or modem. When a fax machine or modem is using
the line, the system detects the line in use, busies the line and
sends line busy status to all stations with a line appearance.
This prevents a station from accessing the line while in use by
the modem or fax.
Note:

The PGDU alarm/fax features require a 10-30 VDC power
supply installed in series with the alarm/fax circuit.
 The sensors are polarity sensitive and require the tip and ring
be connected properly. Refer to Figure 4-2. 
						

							4. Optional
Equipment
4-4
ALARM AND FAX SENSORS
Installing an External Alarm or Fax Sensor
Circuit(Figure 4-1)
CAUTION
Be sure the requirements of the fax machine and alarm system
sensors do not exceed the system specifications.
Maximum Initial Contact Resistance: 100 mohm
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 alarm system or fax machine
sensor to the associated terminals on the cross-connect block.
4. Plug the DDK connector into the Alarm (1-4) connector on
the PGDU PCB (Figure 4-2).
Figure 4-1  CONNECTING AN ALARM OR FAX SENSOR 
						

							4. Optional
Equipment4-5
ALARM AND FAX SENSORS
Installing an External Alarm or Fax Sensor
Circuit(Cont’d)
5. Write down your connection on Figure 3-4 (page 3-4).
6. To program fax sensors .. .
With the default settings, fax sensors are disabled.
0304 - PGDU PCB Alarm/Fax Sensor Setup
Program the sensor for fax (type 2) and associate it with the
trunk.
Refer to Fax Machine Compatibilityin the Software Manual
for additional details
To program alarm contacts . . .
With the default settings, PGDU sensors are alarm sensors set
for normally open operation using alarm ring tone 1. Alarms
do not alert extensions.
1010 - External Alarm Extensions
Determine which alarms should alert which extensions. For
each sensor, enter 1 to ring extension or 0 to not ring exten-
sion.
Refer to External Alarm Sensorsin the Software Manual for
additional details.Figure 4-2  CONNECTING TO THE PGDU PCB 
						

							4. Optional
Equipment
4-6
EXTERNAL PAGING AND PAGE RELAYS
Using External Paging
Each PGDU PCB has four External Paging audio outputs and
four associated control relays. You connect the audio outputs 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.
Notes:


The 3-ACI Analog Communications Interface can
also provide External Paging. Refer to the page 4-
27 for more.


A PGDU circuit used for External Paging cannot
also be used for a Door Box.
Installing External Paging (Figure 4-3)
CAUTION
Be sure the audio input requirements of the paging equipment are
compatible with the audio output specifications of the system.
Output Impedance: 600 Ohm
Output Level: Nominal 250 mV (-10 dBm)
Maximum Output: 400 mV RMS
Figure 4-3  CONNECTING EXTERNAL PAGING
One-Pair Cross-Connect
DDK 
Connector To External Page
audio output on PGDU PCB
25-Pair DDK
Installation CableB Block
Cross
Connect
BlockOutput to 
paging
system 
audio 
inputs
926-49 
						

							4. Optional
Equipment4-7
EXTERNAL PAGING AND PAGE RELAYS
Installing External Paging(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 paging system audio inputs to
the associated terminals on the cross-connect block.
4. Plug the DDK connector into the External Page (1-4) con-
nector in the PGDU PCB (Figure 4-4).
5. Install bridging clips as required.
6. Make sure the switch for the paging circuit is set to PG
(not DH).
7. Write down your connection on Figure 3-4.
Figure 4-4  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
Equipment
4-8
EXTERNAL PAGING AND PAGE RELAYS
Installing External Paging (Cont’d)
8.To program External Paging .. .
With the default settings,
External Paging is enabled at all extensions. The External
Paging zone number is the same as the circuit number. For
example, the lowest numbered paging circuit you set up is
external zone 1.
Refer to Paging, Externalin the Software Manual for addi-
tional details.
9. After programming External Paging, make a test page.
Use VR1-VR4 to adjust the volume of External Paging.
(For example, VR1 corresponds to output 1).