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 power for four single-carrier 
cabinets. The DC Power Distribution Unit comes e quipped with four power 
cords. Each 10 foot (3 meter) cord is equipped with the appropriate connectors. 
Perform the following to  connect each network to the DC Power Distribution Unit:
1. Connect 1 AWG wire for -48V and -48V return from DC Battery Plant to 
each DC Power Distribution Unit.
2. At the J58890CG DC Power Distribution Unit, connect the power cable to 
an available receptacle. Route the cable to the rear of Cabinet A. 
Connect the power cord to the DC connector on the rear of Cabinet A.
3. Repeat Step 1 for Cabinets B, C, and D as required.
4. Repeat Steps 1 and 2 for all remaining port cabinets.
Connect AC Power to DC Power Cabinet
Connect the AC power to the DC Power Cabinet by performing the following:
1. Ensure the associated circuit breakers at the AC power panel OFF.
2. Have an electrician connect AC power leads to the rectifiers using the 
instructions provided with the rectifiers in the DC Power Cabinet. Each 
rectifier should have its own branch circuit. Terminate leads on the AC 
INPUT terminal block of each rectifier.
Test DC Power Plant
To test the DC power plant, refer to the Installation Test Procedure (ITP) in th e 
LINEAGE 2000 ECS Power System Battery Plant Product Manual, 167-790-020.
Connect Stand-by Power
An external, commercial Uninterruptible Power Supp ly (UPS) or a battery 
backup arrangement may be provided. Stand-by power is engineered to 
customer needs depending on the size and configuration of the system. 
The AT&T GBCS Power System is recommended; use the installation 
instructions provided. See your AT&T representative for more information. 
						

							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) p infield at the equipment location (EQL) 
on the top port cabinet. See Figure 4-10. 
2. Connect the bus cables as shown in Figure 4-10. The  cable is located 
behind the lower panel when the c a binet is shipped.
Table 4-1. Time Division Multiplexing (TDM) Bus Connections
Configuration Cabinet/SlotBackplane Time Division 
Multiplexing (TDM)/Local 
Area Network (LAN) 
Pinfield at EQL
Cabinet/Slot
Processor Port Network 
(PPN ), 
High or Critical 
ReliabilityA/22 B/02
B/22 C/00
C/17 D/00
Expansion Port 
Network (EPN), 
Standard, High or 
Critical ReliabilityA/18 B/00
B/17 C/00
C/17 D/00
Processor Port Network 
(PPN ), 
Standard ReliabilityA/22 B/00
B/17 C/00
C/17 D/00 
						

							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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1. Time Division Multiplexing (TDM) bus 
terminator AHF110 on Time Division 
Multiplexing)/Local Area Network 
p infield (TDM/LAN)
2. Time Division Multiplexing/Local Area 
Network pinfield (TDM/LAN) at 
equipment location (EQL) (see Table 4-1 
on p a ge 4-15)3. Time Division Multiplexing (TDM) bus 
cable WP91716 L3
4. Port cabinet (standard reliability), or 
d u plicate control c a binet (high or critical 
relia bility)
5. Control cab inet
Figure Notes: 
						

							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) A
 (ICC) B   (ICC) B
(ICC) C  (ICC) C
Expansion
 Port 
Network 
(EPN )J58890N (ICC) A  J58890H (ICC) A
(ICC) B  (ICC) B 
						

							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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1. Pinfield  per Table 4-2
2. Cabinet  in Position  B
3. Inter-Cabinet Cables4. Backplane
5. Control Cabinet A Position
nRear of Cabinets Shown
Figure Notes: 
						

							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 binets that comp ose your 
switch. To do this, the electronic signals at the connectors on the back of a 
cabinet are converted into optical signals. The optical signals from another 
cabinet are then converted back into electronic signals. AT&T provides opto-
electronic devices, the 9823-typ e lightwave transceivers, that  perform this task.
A comp leted signal from one cabinet goes through a transceiver, a fibre-optic 
cable, and another transceiver to reach another c a binet. If the two cabinets are 
close together, the optical signal may g o through a single, directly connected 
fibre-optic cable. If the two c a binets are far apart, it may be convenient to 
connect the cabinets through the cross-connect field. 
Figure 4-13 shows how to connect fibre-optic cables for direct connections. 
Figure 4-14 shows how to connect fibre-optic cables through a cross-connect 
field. .
Locate Fibre-Optic Cable Connections
Packed with the system is a Customer Service Document (CSD) that includes an 
“Inter-Cabinet Cable Running List.” Each row on the list represents a fibre-optic 
cable connection. 
The list includes the AT&T comcode of the cable to be used, its length (in feet) 
and the addresses of each cable’s source and destination. These addresses 
include the numbers of the c abinets, carrier positions, and slots to which you are 
to connect the cables. Use the information from the Running List to d etermine 
where to connect each fibre-optic cable. 
Figure 4-12 illustrates an example Running List. 
						

							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 your system 
according to the Running List p rovid e d with your system.
General Rules and Recommendations for
Connecting Fibre-Optic Cables
Although fibre-optic cables withstand some misuse, it does require careful 
handling and routing. 
Follow these rules and recommendations when installing fibre-optic cables:
Rule 1
Cross-connect the fibre-optic cable between two 9823-typ e lightwave 
transceivers. That is, run the cable from the connector marked TX on one 
transceiver to the connector marked RX on the other transceiver, and in reverse 
for the other c a ble.
Do this for each connection (row) on the Running List c ontained in the Customer 
Service Document (CSD) shipped with your system. See  Figure  4-12 for  a 
sample Running List.
Rule 2
Use the 9823A (shortwave) transceiver for distances of up to 4900 feet. Use the 
9823B (longwave) transceiver for d istances of up to 25,000 feet. Ensure all 
9823As are connected to 9823As and all 9823Bs are connected to the 
corresponding 9823Bs. 
Connection
 From
SD67975-01Cable 
Code Length From To
CabinetPosition SlotCabinet PositionSlot
CAD3 104266465 20 ft.  01 C 02 02 B 02
CAD3 104266465 20 ft. 01 D 02 02 A 01 
						

							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 time, movement of the cable causes it to exceed the minimum 
bend radius.
Rule 5
Ensure fibre-optic cables are not pressed against any sheet metal e dges by 
subsequently installed c a bles.
Recommendation
In some such systems it may be required to run fi bre-optic cables with the 
input/output cables, such as in the cable slack manager or under a raised floor. 
In these situations, protect the cable by running it in a d edicated area if 
possible. When you must run the cable with other c a bling, protect it by running it 
through flexible conduit.
In the following illustration, the slot locations are for example purposes only. 
						

							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 should be looped and draped from the B25A cable clamp on the 
top ground plate in the stack. 
2. Dress the cable running up the back of the cabinets by tie wrapping the 
cable to the outside of the B25A cable clamp (do not put the cable inside 
the clamp holding the B25A cables).
TX
RX
1
2
2
1
TX
RX 1
23
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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 e
3. Expansion Port Network (EPN) C a b in et 
A Slot 1A01 /  9823-Type lightwave 
transceiver4. Fiber optic cable sheath, containing two 
fibers, each labeled 1 and 2, 
respectively
5. 100A LIU
6. Cross connect field
Figure Notes: