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

INSTALLING PCBs
2. PCB Installation
and Startup
2-28
E&M Tie Line (2EMTU) PCB(Figure 2-19)
The Tie Line (2EMTU) PCB supports system connections to 2-
wire Type 1 (four conductor), 2-wire Type 2 (6 conductor), or
4-wire (four conductor) E&M signaling tie lines. Each 2EMTU
PCB provides two 4-circuit tie line trunk interfaces and an on-
board power supply. The strapping option on the PCB allows
the use of either Type 1 or Type 2 signaling.
The Tie Line PCB requires the use of an EXCPRU daughter
board and a...

2. PCB Installation
and Startup2-29
INSTALLING PCBs
DID (2DIDU) PCB(Figure 2-20)
The DID (2DIDU) PCB supports two Direct Inward Dialing
(DID) trunk circuits. The PCB has an on-board power supply
and an LED that shows when the PCB is in or out of service.
The DID PCB requires a DTDU PCB for DTMF receivers.
For the 28i system, please check with your Sales Representative
for availability of this feature.
To install a DID PCB:
1.28i:Plug DID PCBs into slots 2-5 in the KSU (4 trunk
PCBs maximum per system)....

INSTALLING PCBs
2. PCB Installation
and Startup
2-30
Page/Door Box (PGDU) PCB(Figure 2-21)
The Page/Door Box (PGDU) PCB provides:

DDK connectors for four External Paging Zones or Door
Boxes.


Selector switches to enable each port for External Paging or
Door Box. Each of the four PCB ports can be either an
External Paging port or a Door Box port - not both.


DDK connectors for four dry contact External Paging control
relays (one for each zone). These contacts can control a cus-
tomer-provided Paging...

2. PCB Installation
and Startup2-31 On initial power-up(with the CPRU performing a Cold Start),
the slot into which you plug a PGDU PCB determines its asso-
ciated External Paging and/or Door Box numbers. The system
scans the slots in order (Slots 2-5 in the 28i, Slots 4-8 in the
124i) for PGDU PCBs starting with the first cabinet (Main) and
ending with the last cabinet (Expansion # 2), if applicable. The
first PGDU PCB the system finds gets the lower-numbered
External Paging Zones/Door Boxes. For...

2. PCB Installation
and Startup
2-32
Tone Detector (DTDU) PCB(Figure 2-22)
The Tone Detector (DTDU) PCB provides outbound dial tone
detection for Off Premise Extensions and analog trunks. It also
provides DTMF receivers for certain types of inbound trunks.
These include:

DTMF DIDs


DTMF E&M Tie Lines


DISA


T1 DNIS


T1 DID


T1 Tie Lines
To install a DTDU PCBs:
1.28i:Plug DTDU PCBs into slots 2-5 in the KSU (2 trunk
PCBs maximum per system).
124i:Plug DTDU PCBs into slots 4-8 in any installed...

2. PCB Installation
and Startup2-33
INSTALLING PCBs
28i Power-Up Sequence
Now that all the PCBs you need are installed, you can power-up
the system.
1. Install a surge protector in the AC outlet you intend to use
for system power.
2. Plug the AC power cord for the KSU into its surge protector.
System LEDs on Power-Up
PCB LED StatusCPRU Power-On Lights (green) when KSU
plugged in
Processor LED Flashes slowly (red) about
10 seconds after power-up
ASTU Status LED Flashes slowly (red) when
PCB activated...

2. PCB Installation
and Startup
2-34
INSTALLING PCBs
124i Power-Up Sequence
Now that all the PCBs you need are installed, you can power-up
the system.
1. Install surge protectors in the AC outlets you intend to use
for system power.
2. Plug the AC power cord for Expansion Cabinet # 2 into its
surge protector.
3. Plug the AC power cord for Expansion Cabinet # 1 into its
surge protector.
4. Plug the AC power cord for the Main Cabinet into its surge
protector.
System LEDs on Power-Up
PCB LED StatusCPRU...

2. PCB Installation
and Startup2-35
INSTALLING PCBs
Upgrading the Advanced Feature (EXCPRU)
Module Software Version for the 124i System(Figure 2-24 and 2-25)
The PC Card (P/N 92050xxx) is used to upgrade the 124i
EXCPRU. The following instructions should be followed care-
fully.
Note:To keep the customer’s information, set the mode switch
on the CPRU to the “HOT” position. Otherwise, the sys-
tem will default.
1.   Make sure the system is unplugged and the cover from the
main cabinet has been removed.
2....

INSTALLING PCBs
2. PCB Installation
and Startup
2-36 Figure 2-24  PC CARD
INSTALLATIONFigure 2-25  PC CARD AND EXCPRU LOCATION
92001 - 65
(EXCPRU) 92025
92001 - 64
Insert
92050** PC CardPosition 1
1
Position 2
1
Should
be flushPC Card
Eject Button 

In this section  . . . . . . . . . . . . . .PageConnecting Blocks  . . . . . . . . . . . . . . . . . . .3-2
Working With DDK Connectors . . . . . . . . . . . 3-2
Punching Down a DDK Installation Cable . . . 3-2
Connecting Extensions  . . . . . . . . . . . . . . . .3-5
Digital Station (DSTU) Connections. . . . . . . . 3-5
Analog Station (ASTU) Connections . . . . . . . 3-7
Connecting Trunks  . . . . . . . . . . . . . . . . . . .3-9
Analog Trunk (ATRU) PCB Connections . . . . 3-9
Tie Line Trunk (2EMTU) PCB...