ATT DEFINITY Communications System Generic 3 For Single-Carrier Cabinets Instructions Manual

Install and Connect the Cabinets
4-24Issue 1  September 1995 
!CAUTION:
Do not route fibre-optic cables and the B25A cables together. 
Figure Notes:
Figure 4-15. Single-Carrier Cabinet Fibre Routing
Cable Connections
When routing fibre-optic cables, connect the cables (according to the 
Running List provided in the Customer Service Document (CSD)) to the 
transceiver, and plug the transceiver into the appropriate slot on the back of the 
cabinet, as illustrated in Figure 4-16 through Figure 4-18.
3
4
4...

Install Fibre-Optic Cables
Issue 1  September 1995 
4-25
Standard Reliability Fibre-Optic Cable 
Connections
For Standard Reliability system configuration, route the fibre-optic cable as 
illustrated below.
Figure 4-16. Fibre-Optic Cable Connections for Standard
Reliability Single-Carrier Cabinet System
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
TerminalAUX
A BCDPort Cabinet...

Install and Connect the Cabinets
4-26Issue 1  September 1995 
High Reliability Fibre-Optic Cable Connections
For High-Reliability system  configuration, route the fibre-optic cables as 
illustrated below.
Figure 4-17. Fibre-Optic Cable Connections for High
Reliability Single-Carrier Cabinet System
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
TerminalAUX
ACDPort Cabinet
Port Cabinet
Control Cabinet
1 2 3 4 5 6 7 8 9 10 11...

Install Fibre-Optic Cables
Issue 1  September 1995 
4-27
Critical Reliability Fibre-Optic Cable 
Connections
For Critical Reliability system configuration, route the fibre-optic cables as 
illustrated below. 

Install and Connect the Cabinets
4-28Issue 1  September 1995 
Figure 4-18. Expansion Port Network Fibre-Optic Cable
Connections for Single-Carrier Cabinet with
Critical-Reliability Switch
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
TerminalAUX
BCDPort Cabinet
Port Cabinet
Control Cabinet
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 181 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
CDPort Cabinet
Port Cabinet
1 2 3 4 5 6 7 8 9...

Verify Port Cabinet Ad dress Plugs
Issue 1  September 1995 
4-29
Verify Port Cabinet Address Plugs
The Cabinet Ad dress Plug is a jumper and is required for single-c arrier port 
cabinets 
only. 
On the backplane of a port cabinet, to the right of slot 00, a group of six pins is 
marked for the  cabinet (c arrier) address plug jumper connections. Verify the 
address plug for each port carrier is in the correct location (see Figure 4-19).
Figure Notes:
1. A d dress Plug
2. Jump er
3. Right side at back of...

Install and Connect the Cabinets
4-30Issue 1  September 1995 
Install Back Panels
Install the b a ck panels, tightening the screws when all p anels are in place. Allow 
the screws labeled callout 4 in Figure 4-21 on page 4-31 to remain loose.
Install Ground Plates
The ground plate (Figure 4-20) provides the ground connection for the cabinets 
and stabilizes the cabinets. 
Figure 4-20. Ground Plate
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Figure Notes:
1. Front Ground Plate
2. Battery3. Back Ground Plate
nSide View of 2-Cabinet Port Network 

Install Ground Plates
Issue 1  September 1995 
4-31
See Figure 4-22 and Figure 4-23 for illustrations of the ground plate and cable 
clamp positions.
Install Ground Plates on Systems with
Earthquake Protection
Refer to Ap pendix B for earthquake protection procedures.
Install Ground Plates on Systems without
Earthquake Protection
A ground plate is required to connect each cabinet together (see the following 
figures). To install the ground plate, complete the following steps:
1. At the back of the c...

Install and Connect the Cabinets
4-32Issue 1  September 1995 
2. At the upper cabinet, place the top of the ground plate over the bottom of 
the lower-back panel so the four screws at the b ottom of the lower- back 
panel fit through the four ground plate keyhole slots. The bottom ed g e of 
the ground plate should overlap at the top edge of the lower back panel.
3. Slide the ground plate down over the top of the upper-back panel of the 
lower c a binet so the four sc rews attaching the upper-back panel...

Install Ground Plates
Issue 1  September 1995 
4-33
Figure Notes:
Figure 4-22. Single-Carrier Cabinet Ground Plate, Cabinet Clip,
and Battery Locations
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1. Cabinet Clip
2. Battery3. Back Ground Plate
nSide View of 2-Cabinet Port Network