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

1. Installing
Cabinets1-9
CONNECTING EXPANSION CABINETS
92001 - 30a
AC Cord
AC CordExpansion CEU #2
Expansion CEU #1
Main CEU
Ferrite FiltersEXIFU-S1 PCB EXIFU-S1 PCB
Figure 1-6  CONNECTING EXPANSION CABINETS 

1. Installing
Cabinets
1-10
Connecting the Ground Wires on the 28i System
(Figure 1-7)
The 28i cabinet has two ground connections: ETH (Earth
Ground) and PBXG (PBX Ground).
1. Using 12 AWG stranded copper wire, wind three turns of the
ground wire around the core.
2. Loosen the lugs on both ground connections.
3. Using 12 AWG stranded copper wire, run a short jumper
between the ETH and PBXG lugs.
4. Using the piece of 12 AWG stranded copper wire that is
wrapped around the core, connect the PBXG connection...

1. Installing
Cabinets1-11
Connecting the Ground Wires on the 124i
System (Figure 1-8)
Each 124i cabinet has two ground connections: ETH (Earth
Ground) and PBXG (PBX Ground).
1. Loosen the lugs on both ground connections.
2. Using 12 AWG stranded copper wire, run a short jumper
between the ETH and PBXG lugs.
3. Using another piece of 12 AWG stranded copper wire, con-
nect the PBXG connection to a known earth ground.
4. Firmly tighten both the ETH and PBXG connections.
DO NOT PLUG IN THE CABINET POWER...

2. PCB Installation
and Startup2-1
Section 2, PCB INSTALLATION AND STARTUP
Caution
Do not plug in PCBs with the power applied.
Always unplug the cabinet’s AC power cord before inserting or removing PCBs.
In this section  . . . . . . . . . . . . . .PageInstalling PCBs (cont.)
BRI (BRIU) Interface PCB . . . . . . . . . . . . . . 2-20
Analog Station (ASTU) PCB . . . . . . . . . . . . 2-22
Analog Trunk (ATRU) PCB . . . . . . . . . . . . . 2-24
Caller ID (4CIDU) Daughter Board . . . . . . . 2-25
Ground Start...

28i Hardware Information
2. PCB Installation
and Startup
2-2 The 28i system uses software comparable to the 124i basesys-
tem. This means that any features that are available in the 124i
base system are available in the 28i system as long as the soft-
ware level is the same. Check with your sales representative for
the availability of DID and BRI trunks.
System Load Factors
When connecting equipment to the 28i system, always consider
the Load Factor Table. This table shows the relative power
requirements...

2. PCB Installation
and Startup2-3
PCB LOCATION
Where to Install the PCBs in a 28i System (Figure 2-1)Maximum 16 Trunks
Configuration: 20 Extensions (16 digital/8 analog)
(All configurations are not available at the same time.)The system’s universal architecture gives you flexibility when
installing PCBs. You can install a PCB in any slot, provided
you follow the guidelines in the chart below and keep within
the limits of the load factor. The number of extensions must be
limited to 20 due to the load...

PCB LOCATION
2. PCB Installation
and Startup
2-4
Where to Install the PCBs in a 124i System
(Figure 2-2)
Maximum Configuration: 52 Trunks
72 Extensions
The system’s universal architecture gives you great flexibility
when installing PCBs. You can install a PCB in any slot, provid-
ed you follow the guidelines in Figure 2-2 and the chart below.
Item Description Location Max.
32CPRU Central Processing CPRU slot  in Main 1
Unit
8DSTU 8 Digital Stations Slots 1-3 in any 3 per cabinet
cabinet 9 per system
PRIU...

2. PCB Installation
and Startup2-5
PCB LOCATION
Figure 2-2  PCB LOCATION
926 - 42
EXIFU-S1 PCB
8
7
6
5
4
3
2
1
8DSTU (Digital Station)
or
4ASTU (Analog Station)
or
4ATRU (Analog Trunk)
32CPRU
or
EXIFU (Expansion Interface) 4ASTU (Analog Station)
or
4ATRU (Analog Trunk)
or
4PGDU (Page/Door Box)2EMTU (Tie line)
or
2DIDU (DID Trunk)
or
or
4DTDU (Dial Tone Det.)
or
BRIU (BRI Interface)
or
PRIU (TI/PRI)EXIFU Ribbon Cables 

INSTALLING PCBs
2. PCB Installation
and Startup
2-6
Advanced Feature (EXCPRU) (Figure 2-3)
The Advanced Feature (EXCPRU) Module is available only
for the 124i system. It provides the system with:

Automatic Call Distribution (ACD)


ISDN Capability


E&M Tie Lines


T1
To install the Advanced Feature (EXCPRU) Module:
1. Plug the Advanced Feature Module into the headers on the
right side of the CPRU PCB as shown in Figure 2-3.
2. Set the switch on the EXCPRU to position 1.
To upgrade the EXCPRU software,...

2. PCB Installation
and Startup2-7
INSTALLING PCBs
28i System (Figure 2-4)
The default settings for this card are: 9600 bps, Start bit=1,
Stop bit=1, Parity=No, Character=8 bit. The software requires
the baud rate be set to 9600 bps, so this item is fixed and can
not be changed.
To install the Remote Programming (LAPBU) Module:
1. Plug the Remote Programming Module into the header on the
CPRU PCB. The connector labeled CPRU on the LAPBU
module plugs into the LAPBU connector on the CPRU.
2. Connect the...