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

Hardware Manual
28i/124i/384i 

Hardware Manual
1. Installing
Cabinets
2. PCB Installation
and Startup
3. Installing
Extensions and Trunks
4. Optional
Equipment
5. Data
and SMDR
6. Specifications
and Parts
28i/124i 

92601INS08
January 1999 

1. Installing
Cabinets1-1
In this section
 . . . . . . . . . . . . . . . .
Page
Installing the Cabinets  . . . . . . . . . . . . . . . .1-3
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Before Installing . . . . . . . . . . . . . . . . . . . . . . . 1-3
Site Requirements. . . . . . . . . . . . . . . . . . . . . . 1-3
Removing the 28i Covers . . . . . . . . . . . . . . . . 1-4
Mounting the 28i Cabinets . . . . . . . . . . . . . . . 1-4
Removing the 124i Covers . . . . . . . . . . . ....

1. Installing
Cabinets1-3
Unpacking
Unpack the equipment and check it against your equipment lists.
Inspect for physical damage. If you are not sure about a compo-
nent’s function, review the Product Description Manual. Contact
your Sales Representative if you have additional questions.
Have the appropriate tools for the job on hand, including: a test
set, a punch down tool and a digital voltmeter.
Before Installing
Make sure you have a building plan showing the location of
the common equipment,...

1. Installing
Cabinets
1-4
Removing the 28i Cover(Figure 1-1)
To make installation easier, remove the cover on the KSU.
1. Unscrew the two captive screws on the front of the cabinet
cover.
2. Lift up slightly on the front of the cover – then gently slide
the cover back to remove it.
Figure 1-1  REMOVING THE 28i COVER
Mounting the 28i Cabinet(Figure 1-2)
1. Using the screws provided, attach the metal bracket to the
Main Distribution Frame (MDF) plywood backboard. Mount
the bracket in a convenient...

1. Installing
Cabinets1-5
Removing the 124i Covers(Figure 1-3)
To make wall-mounting easier, remove the cover on each com-
mon equipment cabinet. This allows you to use the cabinets as a
mounting template.
1. Unscrew the two captive screws on the right side of the cabi-
net cover.
2. Lift up the right side of the cover — then slide the cover to
the left to remove it.
Figure 1-3  REMOVING THE 124i COVER
Mounting the 124i Cabinets(Figure 1-4 and Figure
1-5)
1. Using suitable fasteners, mount a Main...

1. Installing
Cabinets
1-6
Figure 1-4  28i INSTALLATION LAYOUT
Continued on next page. . .
80000 - 15
Plywood backboard
Dedicated
AC Outlet
Surge
ProtectorTo earth
ground To telco
groundStation
BlocksStation
Blocks Trunk
Blocks
4
4
INSTALLING THE CABINETS 

1. Installing
Cabinets1-7
INSTALLING THE CABINETS
Figure 1-5  INSTALLATION LAYOUT
To Verified
Earth Ground
Note: Each cabinet
is shown in a typical
8 x 24 configuration.
Dedicated
AC Outlet
Dedicated
AC Outlet
Dedicated
AC Outlet Surge
Protector
Surge
Protector
Surge
ProtectorPlywood Backboard
To
Telco To
Telco To
Telco
To
Stations To
Stations To
Stations
Trunk Blocks Trunk Blocks Trunk Blocks
Station Blocks Station Blocks Station Blocks
4’
4’
Expansion Cabinet #1
Main Cabinet Expansion Cabinet #2 

1. Installing
Cabinets
1-8
Installing EXIFU PCBs on the 124i(Figure 1-6)
Each 124i expansion cabinet requires an EXIFU Expansion
Interface PCB.
To connect Expansion Cabinet #1 to the Main
Cabinet:
1. In Expansion Cabinet #1, plug the EXIFU PCB into the first
(CPRU) slot.
2. Plug the EXIFU PCB ribbon cables into the two connectors
at the top of the Main Cabinet backplane.
3. Install the ferrite filters as shown.
4. Install the metal strain reliefs in both the Main and
Expansion #1 cabinets.To connect...