ATT DEFINITY Communications System Generic 3 Planning And Configuration Instructions Manual

							aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaPOWER AND GROUNDING
Single-Carrier Cabinet System
Each cabinet requires a separate DC power input.  See Table Q for input DC power require-
ments.  Figure 24 provides a typical DC powered and grounding arrangement for a single-carrier
cabinet system.
PLUG
NO. 6 
-48V
1 11
111
GRD 
BLOCK EACH CABINET) C AND D
IF PROVIDED
WIRE GRD
PLATE (BETWEEN TO CABINET
DISCH GRD BAR
DC POWER CABINET
GRD
-48V
-48V
TO DC
DISTRIBUTION
UNIT-NEXT
NETWORK GRD (4 REQUIRED)-48V RTN-48V
TO CONTROL CABINET
GRD BLOCK NEXT
NETWORK
-48V
1
RTN
DISTRIBUTION
1UNIT J58890CG DCLINE CORD (ONE 
PER CABINET
NO. 1
WIRENO. 1 WIRE
3 CONDUCTOR NO. 10
RECEPTACLE
25A FUSE 
75A
75APLUG
FIGURE 24.  Typical Single-Carrier DC Power and Grounding Layout (EPN Colocated)
A ground wire is connected to the ground block of the bottom cabinet and routed to the battery
plant for termination on the Ground Discharge Bar.  An approved ground must be terminated on
the Ground Discharge Bar.
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							POWER AND GROUNDINGaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
Grounding
An approved ground for the cabinets used in the equipment room is essential.  A typical
approved ground is one of the following:
dGrounded Building  SteelÐThe metal frame  of  the building where effectively  grounded
by one of the following grounds: acceptable metallic water pipe, concrete-encased
ground, or a ground ring.
dAcceptable Water PipeÐA metal underground water pipe, at least 1/2-inch in diameter,
in direct contact with the earth for at least 10 feet.  The pipe must be electrically continu-
ous (or made electrically continuous by bonding around insulated joints, plastic pipe, or
plastic meters)  to the point where the protector ground wire is connected.  A metallic
underground water pipe must be supplemented by the metal frame of the building, a
concrete-encased ground, or a ground ring.  If these grounds are not available, the water
pipe ground can be supplemented by one of the following types of ground:
ÐMetal underground gas piping systemÐAn electrically continuous metal under-
ground gas piping system that is uninterrupted with insulating sections or joints
and without an outer nonconductive coating
ÐOther local metal underground systems  or structuresÐlocal underground struc-
tures such as tanks and piping systems
ÐRod and pipe electrodesÐA 5/8-inch (solid rod) or 3/4-inch (conduit or pipe)
electrode driven to a minimum depth of 8 feet
ÐPlate electrodesÐExpose a minimum of 2 square feet of metallic surface to the
exterior soil
dConcrete-Encased GroundÐAn electrode encased by at least 2 inches of concrete and
located within and near the bottom of a concrete foundation or footing in direct contact
with the earth.  The electrode must be at least 20 feet of one or more steel reinforcing
bars or rods, not less than 1/2 inch in diameter, or at least 20 feet of bare, solid copper
wire not smaller than 4 AWG.
dGround RingÐA buried ground that encircles a building or structure  at a depth of a least
2-1/2 feet below the earths surface.  The ring must consist of at least 20 feet of bare
copper conductor not smaller than 2 AWG.
All approved grounds used must be bonded together to form  a single grounding electrode system
as required in Section 250-81 of the National Electrical Code.
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							aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaPOWER AND GROUNDING
Approved floor grounds are those grounds on a floor of a high-rise building suitable for connec-
tion to the ground terminal in the riser closet and to the PBX equipment single point ground termi -
nal.  Such grounds may be one of the following:
dBuilding steel
dThe grounding conductor for the secondary side of the power transformer feeding the
floor
dMetallic water pipes
dPower feed metallic conduit supplying panel boards on the floor
dA grounding point specifically provided in the building for the purpose
Lightning Protection
A coupled bonding conductor is tie-wrapped to all trunks.  The coupled bonding conductor can be
any one of the following:
d10-AWG ground wire
dContinuous cable sheath
dSix unused pairs of wire
The coupled bonding conductor connects the cabinet single-point ground block and runs all the
way to the approved ground located nearest the telephone company-owned protector block at the
building entrance facility.
When an auxiliary cabinet is provided with a multi-carrier cabinet system, a 6-AWG ground wire
connects the system cabinet single-point ground block to the auxiliary cabinet ground block.  It is
recommended that the ground wire be routed as close as possible to the cables connecting the
system cabinet and the auxiliary cabinet.
If auxiliary equipment is not mounted in the auxiliary cabinet, then the power supply for this
equipment must be plugged into one of the two convenience outlets located on the back of the
multi-carrier cabinet to preserve ground integrity.  The convenience outlet is fused at 5 amps.
The dedicated Manager I or G3r-MT terminal should be plugged into the other convenience
outlet.
Sneak Current Protection
Sneak fuses protect the building wiring and circuit packs from ``foreign potential by providing a
current interruption capability.  Sneak fuse panels, when provided, are installed on the switch side
of the network interface.  All incoming and outgoing trunks and off-premises station lines pass
through the sneak fuses.  Sneak current protection is required for installations in Canada.  The
sneak fuses must be CSA certified.
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							POWER AND GROUNDINGaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
Standby Power SystemÐMulti-Carrier Cabinet System
Battery Reserve (Multi-Carrier System)
The system provides a 10-second power holdover during power interruptions.  A battery  reserve
supplies power to a single control carrier for up to 10 minutes during a commercial power failure.
With duplicated control carriers, power is available for 5 minutes.  If additional holdover power is
required, an alternate, independent source of on-premises power is required to maintain the sys-
tem for a limited time.  An external, commercial Uninterruptible Power Supply (UPS) or a battery
backup arrangement are used as an alternate source of power during a commercial power
failure.
Uninterruptible Power Supply (Multi-Carrier System)
The uninterruptible power supply (UPS) protects the system equipment from voltage lags, over-
voltage conditions, blackouts, and line frequency fluctuations. The UPS uses a microprocessor
controlled device to regulate and condition the commercial power.  During commercial power
failure, UPS provides dependable and reliable backup power for short durations.
Note:Any peripheral that is connected to the system and derives its power from a wall
socket will not be supported during a power outage.  This also applies to the 7407D
and 7404D voice terminals.
For most multi-carrier cabinet system  configurations, any UPS that meets the requirements given
in Table R or Table S can be used with the system for standby power.
TABLE R.  AC Power Requirements
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
No. of No. of
Control Port Power Frequency Power
Carrier Carrier Rating (KVA) Hertz Factor
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
1 0 0.90 60 ±5% 0.70
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
1 1 1.50 60 ±5% 0.70
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
1 2 2.10 60 ±5% 0.70
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
1 3 2.70 60 ±5% 0.70
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
1 4 3.30 60 ±5% 0.70
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb c c c
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							aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaPOWER AND GROUNDING
TABLE S.  DC Power Requirements
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
No. of No. of
Control Port Input
Carrier Carrier Power (Watts)
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
1 0 630
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
1 1 1050
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
1 2 1470
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
1 3 1890
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
1 4 2310
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Battery Backup (Multi-Carrier System)
A battery supply and an inverter can be used to provide standby power for up to 8 hours after a
commercial power failure.
When standby power is provided, the following items must be taken into consideration:
dSize and weight of the batteries
dSize and weight of the inverter(s)
dHeat dissipation
dAir flow and circulation
dItems of equipment to receive power
This standby power system contains the following:
dInverter
dBatteries
dBattery stand
The system requires a 120-volt AC input that is provided by the inverter.  The size of the inverter
is determined by the carrier configuration and the additional equipment to be provided with power
in the event of a commercial power failure.  The size of the battery supply required depends upon
the length of time power is to be provided and the particular power demands of the system.
Tables R and S show the approximate power consumption requirements that can be used to size
the system for emergency generators or battery backup.
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							POWER AND GROUNDINGaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
Standby PowerÐSingle-Carrier Cabinet System
The following provides Battery Reserve, Uninterruptible Power Supply, and Battery Backup infor-
mation for single-cabinet systems.
Battery Reserve (Single-Carrier System)
During commercial power failure, the power supply provides a 250-millisecond power holdover to
allow the system to remain in service.  If power is restored within 250 milliseconds, there is no
interruption of service.
A battery reserve is automatically activated if commercial AC power fails.  These batteries allow
the power supply to provide a 2-minute battery reserve holdover to the control circuit packs and
fans during power failure beyond 250 milliseconds.  All port circuit packs are out of service during
this time.  When commercial power is restored within 2 minutes, the system reinitializes from the
memory stored in the Memory circuit pack.  All port circuit packs continue to remain out of ser-
vice during the approximately 25 seconds required to restore the system.
When commercial power is restored after 2 minutes, the system reinitializes from the system
tape.  Reinitialization takes approximately 10 minutes and the port circuit packs remain out of ser -
vice during this time.
The Emergency Transfer feature becomes active if commercial power failure exceeds 250 mil-
liseconds.  Selected voice terminals are automatically connected to trunks in the central office.
If additional holdover power is required, an alternate, independent source of on-premises power
is required to maintain the system for a limited time.  An external, commercial Uninterruptible
Power Supply (UPS) or a battery backup arrangement are used as an alternate source of power
during a commercial power failure.
Uninterruptible Power Supply (Single-Carrier System)
If long-term holdover power is required, an external Uninterruptible Power Supply (UPS) can be
provided as an alternate source of power during a commercial power failure.  Any UPS that
meets the requirements given in Table T can be used with the system.
TABLE T.  UPS Power Requirements
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Maximum
No. of Volt-Ampere Frequency Power Cut-In Time
Cabinets Rating Hertz Factor (milliseconds)
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
1 1200 60 ±5% 0.6 200
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
2 2400 60 ±5% 0.6 200
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
3 3600 60 ±5% 0.6 200
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
4 4800 60 ±5% 0.6 200
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c
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							aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaPOWER AND GROUNDING
Battery Backup (Single-Carrier System)
A battery supply and an inverter can be used to provide standby power for up to 8 hours after a
commercial power failure.
When standby power is provided, the following items must be taken into consideration:
dSize and weight of the batteries
dSize and weight of the inverter(s)
dHeat dissipation
dAir flow and circulation
dItems of equipment to receive power
This standby power system contains the following:
dInverter
dBatteries
dBattery stand
The single-carrier cabinet system requires a 120-volt AC input that is provided by the inverter.
The size of the inverter is determined by the system configuration and the additional equipment
to be provided with power in the event of a commercial power failure.  The size of the battery
supply required depends upon the length of time power is to be provided and the particular power
demands of the system.  Table T shows the approximate power consumption requirements that
can be used to size the system for emergency generators or battery backup.
House Wiring
House wiring includes all on-premises wiring on the customer side of the cross-connect field.
The cross-connect field can be either 66-type or 110-type hardware.
Wiring is distributed from the cross-connect field by 25-pair cables.  The 25-pair cables are con-
nected either directly to terminal wall jacks using adapters or to satellite locations.  Satellite loca-
tions are used when already present or when required by the length of the wiring runs from the
switch to the terminals.  The 25-pair cables can be divided into either 4-pair or 3-pair wiring
groups (4-pair wiring groups are recommended).  From the satellite locations, 4-pair D-inside
cables connect the satellite locations to information outlets (modular wall jacks).
See 
DEFINITYÒCommunications System Generic 1 and Generic 3iÐWiring, 555-204-111, for
details on the cross-connect hardware and wiring distribution.
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							aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaUPGRADES AND ADDITIONS
UPGRADES AND ADDITIONS
The upgrade process consists of changing the hardware and software  of  the a previously
installed system to that of a later version system.  An upgrade may be performed in response to
increased call processing demands, need for greater feature capabilities, or other changes in
customer requirements.
The addition process consists of adding voice terminals, circuit packs, carriers, or software
features to an existing system without upgrading the version of the system.
The following provides a synopsis of the upgrades and additions process for DEFINITY  Commun-
ications System Generic 1 and Generic 3.
For specific details on the upgrade process and associated administration, refer to the 
DEFIN-
ITY
ÒCommunications System Generic 1 and Generic 3iÐUpgrades and Additions, 555-204-
106, or 
DEFINITYÒCommunications System Generic 3rÐUpgrades and Additions, 555-230-
106.
System 75 Upgrade to DEFINITY Generic 1 PPN
Without Duplication
The System 75 Versions 1 (V1), 2 (V2), or 3 (V3) upgrade to DEFINITY Generic 1 requires the
following:
dReplacing the J58890AA-1/J58890AB-1 Control Carrier with a J58890AH-1 Control Car-
rier
dReplacing TN711 Processor circuit pack with a TN773 Processor circuit pack
dReplacing TN734 Memory circuit packs with a TN770 Memory circuit pack
dReplacing TN727 Network Control circuit pack with a TN777 Network Control circuit pack
dReplacing TN741 Tone Clock circuit pack with a TN768 Tone Clock circuit pack
dReplacing the TDM cables with new WP91716 L1 and L2 TDM/LAN cables
dAdding a new TN774 tape drive circuit pack and removing the HCMR/RMSS tape drive
dAdding a TN765 Processor Interface circuit pack if required
dReplacing the software tape
dActivating and administering new features
If an Expansion Port Network (EPN) is required, an EPN cabinet is added.  A TN776 Expansion
Interface circuit pack is added to the Processor Port Network (PPN) cabinet.  A fiber link con-
nects the Expansion Interface circuit packs.
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							UPGRADES AND ADDITIONSaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
System 75 Upgrade to DEFINITY Generic 1 PPN With Duplication
The System 75 Versions 1 (V1), 2 (V2), or 3 (V3) upgrade to DEFINITY Generic 1 with duplica-
tion requires the following:
dReplacing the J58890AA-1/J58890AB-1 Control Carrier with a J58890AH-1
Control Carrier
dReplacing TN711 Processor circuit pack with a TN773 Processor circuit pack
dReplacing TN734 Memory circuit packs with a TN770 Memory circuit pack
dReplacing TN727 Network Control circuit pack with a TN777 Network Control circuit pack
dReplacing TN741 Tone Clock circuit pack with a TN768 Tone Clock circuit pack
dReplacing the TDM cables with new WP91716 L1 and L2 TDM/LAN cables
dAdding a new TN774 tape drive circuit pack and removing the HCMR/RMSS tape drive
dAdding a TN765 Processor Interface circuit pack if required
dReplacing the J58890BB-3 Port Carrier in position B with a J58890AJ-1 Duplicated Con-
trol Carrier that contains the following circuit packs.
ÐProcessor circuit pack TN773
ÐMemory circuit pack TN770
ÐTape Drive circuit pack TN774
ÐNetwork Control circuit pack TN777
ÐDuplication Interface circuit pack TN772
ÐTone Clock circuit pack TN768 in both J58890AJ-1 and J58890AH-1
dAdding a TN772 Duplication Interface circuit pack to the J58890AH-1 Control Carrier
dAdding the inter-carrier cable between the J58890AH-1 Control Carrier and the
J58890AJ-1 Duplicated Control Carrier
dAdding the new software tape to the tape drive in both the J58890AH-1 Control Carrier
and the J58890AJ-1 Duplicated Control Carrier
dActivating and administering new features
If an EPN is required, an EPN cabinet is added.  Two TN776 Expansion Interface circuit packs
are needed in the PPN cabinet.  Two fiber links are required to connect the Expansion Interface
circuit packs.
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							aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaUPGRADES AND ADDITIONS
System 75 Upgrade to DEFINITY Generic 1 EPN Without
Duplication
The System 75 Medium Cabinet is upgraded to the EPN Cabinet Without Duplication by:
dRemoving the tape drive unit
dRemoving the J58890AA-1/J58890AB-1 Control Carrier
dInstalling the J58890AF-1 expansion Control Carrier
dReplacing TN741 Tone Clock circuit pack with a TN768 Tone Clock circuit pack
dAdding TN775 Maintenance circuit pack
dReplacing the TDM cables with new WP91716 L1 and L2 TDM/LAN cables
dAdding and restructuring the port circuit packs as required
A TN776 Expansion Interface circuit pack is added to the PPN cabinet.  A fiber link connects the
Expansion Interface circuit packs.
System 75 Upgrade to DEFINITY Generic 1 EPN With Duplication
The System 75 Medium Cabinet is upgraded to the EPN Cabinet With Duplication by:
dRemoving the tape drive unit
dRemoving the J58890AA-1/J58890AB-1 Control Carrier
dInstalling the J58890AF-1 expansion Control Carrier
dReplacing TN741 Tone Clock circuit pack with two TN768 Tone Clock circuit packs
(one in the first and one in the second carrier)
dAdding TN775 Maintenance circuit pack
dReplacing the TDM cables with new WP91716 L1 and L2 TDM/LAN cables
dAdding and restructuring the port circuit packs as required
dAdding two TN776 Expansion Interface circuit packs (one in the first port carrier in the
EPN Cabinet and one in the second)
Two TN776 Expansion Interface circuit packs are needed in the PPN Cabinet as well.  Two fiber
links are required to connect the Expansion Interface circuit packs.
137