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

Install and Connect the Cabinets
4-14Issue 1  September 1995 
!CAUTION:
System grounding shall comply with the general rules for grounding 
contained in Article 250 of the National Electrical Code (NEC), National Fire 
Protection Agency (NFPA) 70, or your a pplicable local electrical code. See 
Appendix A for a d esc ription of “approved ground.”
Connect DC Power to Networks
Each port cabinet stack must have a DC Power Distribution Unit associated with 
it. Each DC Power Distribution Unit furnishes DC...

Locate and Connect Time Division Multiplexing (TDM) 
Bus
Issue 1  September 1995 
4-15
Locate and Connect Time Division 
Multiplexing (TDM) Bus
Locate the white fabric-covered Time Division Multiplexing (TDM) bus cable. 
Refer to Table 4-1 for slot information.
Follow these instructions to connect the bus to the appropriate slots. 
1. Remove the Time Division Multiplexing (TDM) b us terminator on Slot 22 of 
Control Cabinet 
A and move it to the Time Division Multiplexing 
(TDM)/Local Area Network (LAN)...

Install and Connect the Cabinets
4-16Issue 1  September 1995 
Figure 4-10. Time Division Multiplexing (TDM) Bus
Connections for Standard-Reliability Processor
Port Network (PPN)
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Locate and Connect Inter-Cabinet Cables (ICC)
Issue 1  September 1995 
4-17
Locate and Connect Inter-Cabinet 
Cables (ICC)
Connect the Inter-Cabinet Cables (ICC) using these steps:
1. Remove the Inter-Cabinet Cable (ICC) from the lower back shelf of the 
cabinet. 
2. Connect the cables as shown in Figure 4-11 and Table 4-2.
Table 4-2. Inter-Cabinet Cable Connections
   From Cabinet A To Cabinet B
Cabinet Carrier Connection Carrier Connection
Processor
 Port 
Network 
(PPN )J58890L (ICC) A  J58890M (ICC)...

Install and Connect the Cabinets
4-18Issue 1  September 1995 
Figure 4-11. Inter-Cabinet Cable (ICC) Connections for
Standard Reliability Expansion Port Network
(EPN) Cabinet Stack
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Install Fibre-Optic Cables
Issue 1  September 1995 
4-19
Install Fibre-Optic Cables
This section discusses the hardware and methods required to connect and 
route fibre-optic cables. 
The Expansion Port Network (EPN) c a binet is normally p ositioned next to the 
Processor Port Network (PPN) c abinet(s), but may also be installed in a different 
room or a different building. Fibre-optic cables connect the cabinets together. 
Fibre-Optic Cable Operation
Fibre-optic cables carry signals between the c a...

Install and Connect the Cabinets
4-20Issue 1  September 1995 
Figure 4-12. Typical Fibre-Optic Cable Running List
In the example Running List in Figure 4-12, connect a cable labeled 104266465 
(20 feet long) from Cabinet 1, Carrier C, Slot 2, to Cabinet 2, Carrier B, Slot 2. 
NOTE:
The following tasks refer to the Running List and offer typical installation 
instructions. If any conflict b etween s pecific details in the Running List and 
the instructions given in the following procedures arise, cable...

Install Fibre-Optic Cables
Issue 1  September 1995 
4-21
Rule 3
Route fibre-optic cables away from groups of other c a bles where they may b e 
stretched by the weight of metal cable bundles, as fi bre-optic cables are q uite 
flexible. 
Rule 4
Avoid bending fibre-optic cables to a radius smaller than 1-1/2 inches (4 cm), to 
prevent mechanical stress on the cables, as they are rather delicate. Plan your 
use of c a ble ties to avoid crimping the cable or creating a fixed stress point 
where, at a later...

Install and Connect the Cabinets
4-22Issue 1  September 1995 
Figure 4-13. Fibre-Optic Cable Installation Between Shortwave 
Transceivers, Direct Connection
TX
RX
1
2
2
1
TX
RX 1
23
4
1. Processor Port Network (PPN) C abinet A 
Slot 2A01 / 9823-Typ e lightwave 
transceiver
2. FL 2P -P-2 0 Fib er o p tic  c abl e3. Expansion Port Network(EPN) Cabinet A 
Slot 1A01 / 9823-Type lightwave 
transceiver
4. Fiber optic cable sheath, containing two 
fibers, each labeled 1 and 2, 
respectively
Figure Notes: 

Install Fibre-Optic Cables
Issue 1  September 1995 
4-23
Figure 4-14. Fibre-Optic Cable Installation Between
Longwave Transceivers Through Fibre-Optic
Cross-Connect Field
Raised Floor or Cable Slack Managers
Figure 4-15 shows the recommended fibre-optic cable routing for a single-
carrier cabinet system with a c a ble slack manager or on a raised floor. 
In these situations, use the following ste ps to route the cable:
1. Route the fibre-optic cable up toward the top of the cabinet. The excess 
cable...