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 . . . . . . . . . . . . . . . 1-5
Mounting the 124i Cabinets . . . . . . . . . . . . . . 1-5
Connecting Expansion Cabinets . . . . . . . . .1-8
Installing EXIFU PCBs . . . . . . . . . . . . . . . . . 1-8
Grounding the Cabinets  . . . . . . . . . . . . . .1-10
Connecting the Ground Wires - 28i System . 1-10
Connecting the Ground Wires - 124i System. 1-11
Section 1, INSTALLING THE MAIN AND EXPANSION CABINETS 
						

							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, extensions, the telco demarcation and
earth ground. In addition, the installation site must meet the
requirements outlined in the Standard Practices Manual.
Site Requirements
The common equipment is contained in three wall-mounted cab-
inets: the Main Cabinet and two Expansion Cabinets. Choose a
central location for the cabinets that allows enough space for the
equipment — and provides enough room for you to comfortably
work. The Installation Layout (Figure 1-4 and Figure 1-5 on
pages 1-6 and 1-7) shows you abouthow much space your sys-
tem requires.
Each common equipment cabinet requires a three-prong dedi-
cated 110 VAC 60 Hz circuit (NEMA 5-15 receptacle) located
within 7 feet of the AC receptacle. You should install the exten-
sion and trunk blocks to the right of the Main Cabinet. Telco
should also install the RJ21X to the right of the Main Cabinet.
INSTALLING THE CABINETS 
						

							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 location, about 12” higher than
where you want the bottom of the cabinet to line up.
2. Hang the KSU on the metal bracket.
3. Install two mounting screws (provided) in the lower left and right
hand corners of the KSU to secure it to the plywood backboard.
The right side panel of the KSU can also be taken off by
removing the screws at the top and bottom of the side panel.
Figure 1-2  HANGING THE 28i CABINET
80000 - 13
80000 - 12
INSTALLING THE 28i CABINET 
						

							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 Distribution Frame
(MDF) plywood backboard in a centrally located spot.
2. Hold the Main Cabinet against the MDF and mark all four
mounting holes.
3. Drill the marked holes using a 1/8” drill bit.
4. Install two mounting screws (provided) in the top two holes,
leaving about 3/8” shank exposed.
5. Hang the Main Cabinet on the top two screws and fasten in
place.
6. Install the bottom two screws and tighten in place.
7. Following the procedure above, install the expansion cabi-
nets (if required). 
92001 - 29
INSTALLING THE 124i CABINETS 
						

							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 Expansion Cabinet #1 to Expansion
Cabinet #2:
1. In Expansion Cabinet #2, plug the EXIFU PCB into the first
(CPRU) slot.
2. Plug the EXIFU PCB ribbon cables into the two connectors
at the top of Expansion Cabinet #1.
3. Install the metal strain reliefs in both expansion cabinets.
CONNECTING EXPANSION CABINETS