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

							Plan and Prepare the Site
2-8Issue 1  September 1995 
Lay Out and Ensure Appropriate 
Grounding
Grounding is relatively simple for an AC-powered switch. First, connect the 
cabinets to each other. Then, connect a single ground wire from the Processor 
Port Network (PPN) to the a p proved protective ground. 
Grounding of the system must comply with the general rules for grounding 
contained in Article 250 of the National Electrical Code (NEC), National Fire 
Protection Agency (NFPA) 70, or the applicable electric code in your country. 
See Ap pendix A for a description of “approved ground.” 
Connect Coupled Bonding Conductor
The Coupled Bonding Conductor connects to the single-point-ground-block and 
runs adjacent to pairs in an associated telecommunications cable. The mutual 
coupling between the b onding conductor and the pairs reduces potential 
differences in terminating equipment. The conductor consists of a 10 AWG wire 
that must be tie-wrapped to the inside wiring c a ble and terminated at the 
coupled bonding conductor terminal bar at the switch cross-connect field. 
Refer to Ap pendix F for wire conversion information.
Refer to Figure 4-9 on page 4-13 for an illustration of a Coupled Bonding 
Conductor.
If the approved protective ground or approved floor ground can only be 
accessed inside a dedicated power equipment room, you should have an 
electrician make the connections to this ground. Electrical 
NoiseVoice band noise from the battery plant to the system must 
be less than 32 dBrnC (decibels above reference noise with 
C-filter or -58 dBmp (decibels below 1 milliwatt 
psophometric).
Grounding A single point ground must be maintained. A ground 
conductor must b e installed from the b attery p lant GROUND 
DISCHARGE BAR to the  closest  “Ap proved  Ground” via the 
shortest and most direct route as required by the National 
Electrical Code or applicable electrical code in your area. 
The gauge must be no smaller than the largest conductor in 
the System and larger than 6 AWG. Grounding between the 
system c a binet and the battery plant should be connected 
using the procedures given later in this chapter.
Lightning 
ProtectionThere must be adequate lightning protection in the battery 
plant to insure that the system will not be d amaged. Parameter Requirements 
						

							Determine the Location of the Equipment Closets
Issue 1  September 1995 
2-9
NOTE:
Check location of the AC p ower receptacle. The receptacle must be on a 
separately current limited (fuse or circuit breaker) circ uit not controlled by 
a wall switch.
Determine the Location of the 
Equipment Closets
Determine the location of the e quipment closets where larg e cables can be 
connected out into smaller ones. Determine locations of terminating resisters for 
Basic Rate Interface (BRI) station circuits to be installed in equipment closets.
Determine External Trunk Locations
Determine where external trunk lines come into the building and be routed to the 
equipment room. Determine where external trunk converters and adapters as 
well as sneak-c urrent fuse panels will be installed in the switch room (preferably 
close or next to the cross connect fields).
Create a Provisioning Plan
Determine an a ppropriate available port circuit on the DEFI NI TY System for each 
telephone, trunk, and peripheral connection needed, and, in addition, plan for 
auxiliary p ower for Basic Rate  Interface (BRI) and certain display sets.
Create a provisioning plan to include the following (see the example on the 
following p a ge):
nStation or trunk type or feature/service.
nBuilding location (floor/room/desk/information outlet).
nExtension number or trunk group and member number.
nPort circuit location on the switch for each endpoint (DEF INI TY System 
Generic 3 cabinet/carrier/slot/circuit.
nRoute from switch room through equipment closets to each endpoint.
nAuxiliary power supply, if required. 
						

							Plan and Prepare the Site
2-10Issue 1  September 1995 
.
Table 2-2. Example of a Provisioning Plan
Station or Trunk 
Type or 
Feature/ServiceBuilding 
Location 
(floor/room/
desk/
information
 outletExtension 
Number or 
Trunk Group 
and Member DEFINITY 
G3 cabinet/
carrier/slot/
circuitRoute 
from 
equipment 
closetsAuxiliary 
Power 
Required?
8410
8403
Attendant Console
Analog CO
Digital Tie
.....
Music on Hold 
						

							September 1995 Issue 1 3-1 
3
Unpack the Cabinet
This chapter describes the system unpacking procedures. 
The DEFI NI TY System Generic 3 (G3) single-carrier cabinets are shipped in a 
polyethylene bag, packed in a cardboard container. The cabinet is fastened to a 
wood/Styrofoam pallet with two metal b ands. The cardboard   container is 
strapped to the p allet with another metal band.
!DANGER:
Lifting the cabinet requires two people, as it may weigh as much as 130 
pounds/60 kilograms. Use caution to avoid injury.
Unpack and Inspect for Damage
Unpacking the Cabinets
To unpack the cabinets, complete the following steps:
1. Check the status of the SHOCKWATCH and/or TILTWATCH indicators on 
the card board  container. These indicators are white under normal 
conditions. If the container has been shaken or tilted beyond 
specifications, the indicators will b e red, indicating potential damage. 
Report any damage according to local shipping instructions.
2. Remove the cabinet from the cardboard container.
!DANGER:
Take care to avoid injury while cutting and removing b ands.
3. Remove all card board, tape, and plastic. 
						

							Unpack the Cabinet
3-2September 1995 Issue 1  
!CAUTION:
Deep knife penetration may damage the cabinet.
4. O pen and remove the front door and back panels from cabinet. The 
screw location is shown in the following figures.
Figure Notes:
1. Screw that opens front cabinet door
Figure 3-1. Front Cabinet Door Latch Screw Location
Figure 3-2 shows the back panel screw locations.
1 
						

							September 1995 Issue 1 3-3
Figure Notes:
1. Screws to remove 
2. Screws to loosen
3. Screws to remain
Figure 3-2. Back Cabinet Panel Screw Locations
1. Remove all packing material from inside the cabinet.
Inspect Cabinet
2. Inspect cabinet for any d amage that may have occurred during ship ping. 
Report any damages according to local shipping instructions.
3 2
1
1
223 2
11 
						

							Unpack the Cabinet
3-4September 1995 Issue 1  
3. Verify the label near the circuit b reaker on the power supply toward the 
rear of each cabinet corresp onds to your local voltage type.
!DANGER:
If the label is different than the voltage typ e at your site, notify your 
A T & T representative immediately for a replacement power supply. 
Do not, under any circumstances, connect the system to power!
Check Circuit Packs
4. Ensure all circ uit packs are fully inserted into the proper slots according 
to the Customer Service Document (CSD). Report any discrepancies in 
circuit pack type or quantity to your AT&T representative. 
						

							Issue 1  September 1995 4-1 
4
Install and Connect the Cabinets
This chapter describes how to install the Processor Port Network (PPN) and 
Expansion Port Network (EPN) single-carrier cabinets for DEFINITY System 
Generic 3. Directions are provided for the following configurations:
nStandard reliability
nHigh reliability
nCritical reliability
Refer to Ab out This Book for a description of each configuration.
This chapter discusses single-carrier cabinets only. For information on multiple-
carrier cabinets, refer to the 
DEFINITY Communications System Generic 1 and 
Generic 3 Installation and Test
 document. 
To install the cabinets, comp lete the following steps as detailed in this chapter:
1. Install earthquake floor mounting (if earthquake protection is required)
2. Position and stack cabinets
3. Connect grounds and Connect AC power or DC power
4. Connect Time Division Multiplexing (TDM) cables
5. Connect inter-cabinet c a bles (ICC)
6. Verify address plug settings
7. Install back plates
8. Install ground plates
9. Install front c a binet clips or ground plates
10. Connect fibre-optic cables
11. Install doors 
						

							Install and Connect the Cabinets
4-2Issue 1  September 1995 
Install Earthquake Mounting 
If earthquake protection is required for your area, install earthquake floor 
mounting as directed in Ap pendix B.
Position and Stack the Cabinets
Follow the d iagram in the Customer Service Document (CSD) ship p ed with each 
cabinet, and stack the DEFI NI TY System Generic 3 cabinets using these steps:
1. Place the control c a binet in position at the location determined when 
room layout was planned. 
NOTE:
Check location of the AC/DC power receptacle. The receptacle 
must be on a se parately fused circ uit 
not controlled by a wall 
switch. It must be located within 10 feet (3 meters) of the cabinet, 
and should be located outside the cross-connect field area. 
2. Stack the single-carrier cabinets by letter, according to the serial 
numbers and lettered designation strips in the Customer Service 
Document (CSD), and as shown in Figure 4-1.
Figure 4-1. Cabinets Stacked by Letter
3. Remove the front cabinet d oor and back cabinet p anel. See Unpack and 
Inspect for Damage on p age 3-1 for more information.
D
B C
A 
						

							Connect System Cabinet Grounds
Issue 1  September 1995 
4-3
Connect System Cabinet Grounds
To connect ground, refer to Figure 4-2 on p a ge 4-4 and perform the following:
1. At lower left rear of the Processor Port Network (PPN) cabinet (Control 
Cabinet A), connect a 6 AWG ground wire to the cabinet ground block. 
See Ap pendix F for international wire conversions for outside North 
America.
NOTE:
A screwdriver is required to loosen and tighten the screws securing 
the ground wire to the ground bloc k.
2. Run the ground wire to an a p proved ground. Refer to Appendix A.
3. At the Expansion Port Network (EPN ) cabinet(s) (as provided), connect a 
6 AWG ground wire to the A-cabinet ground block. 
4. Run the ground wire from the Expansion Port Network (EPN) to the 
Processor Port Network (PPN) c a binet and connect it to the c a binet 
ground block.
NOTE:
If  the Exp ansion Port  Network (EPN) cabinet is remotely located 
from the Processor Port Network (PPN) cabinet (in a separate room 
or building), run the 6 AWG cabinet ground wire to an a pproved 
protective ground.
5. At the Processor Port Network (PPN) c abinet,  connect a 10-AWG wire to 
the cabinet ground block. At a later time, tie-wrap the ground wire 
(coupled bonding conductor) to the trunk c a bles, terminating it at the 
coupled bonding conductor terminal bar at the cross-c onnect field for the 
switch. Refer to Figure 4-9 on p a ge 4-13 for an illustration of the coupled 
bonding conductor.