Miscellaneous Wiring Installation. AT&T System 75, 75 XE
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CHAPTER 4. STATION WIRING white field terminal/connecting blocks (equipment room side) and blue field terminal/connecting blocks (station side).
2-Point Administration
For 2-point administration (Figure 4-13), the patch cords/jumper wires
are connected between purple field terminal/connecting blocks and white field terminal/connecting blocks at the equipment room. At the satellite location, patch cords/jumper wires are connected between the white field terminal/connecting blocks (equipment room side) and blue field terminal/connecting blocks (station side) as specified on the Port
Assignment Record. Update the Port Assignment Record for all administrative changes at a satellite location.
Miscellaneous Wiring Installation
Installing System Access Terminal (SAT)
The SAT is connected to the TERM connector that is located on the rear of the control carrier. A M25B cord is used to make the connection. See
Figure 4-14 for the connections.
4-24
Miscellaneous Wiring Installation
MAXIMUM*
CABLING DISTANCE
50 FEET
M25B CORD
SAT
SYSTEM 75
OR 75 XE
* THE MAXIMUM DISTANCE BETWEEN SYSTEM 75/75 XE IS
50 FEET WHEN USING 24 AWG WIRE. THE DISTANCE
MAY BE REDUCED IF HIGHER GAUGE WIRE IS USED OR
IF THE CAPACITIVE LOAD ON THE LINE IS INCREASED.
IN GENERAL, THE SAT AND THE SYSTEM 75/75 XE
SHOULD BE DIRECTLY CONNECTED BY THE SHORTEST
POSSIBLE CABLE.
Figure 4-14. Connections for SAT
Installing Attendant Console
Requirements
The attendant console is connected to an information outlet the same
as any telephone/voice terminal. Figure 4-15 shows the connections for
the attendant console.
4-25
CHAPTER 4. STATION WIRING
* ACC PWR LEADS AT YELLOW FIELD, 346 BULK POWER SUPPLY, OR 329A POWER SUPPLY.
KS-22911, L1 POWER SUPPLY CAN BE USED IF ATTENDANT CONSOLE IS NOT EQUIPPED
WITH OPTIONAL SELECTOR CONSOLE.
Figure 4-15. Connections for Attendant Console
Power for two consoles can be provided by the switch cabinet through an auxiliary cable connected to the trunk/auxiliary field. Whenever possible, power for the primary attendant console should be provided by the switch cabinet. This makes the primary console fully operational during short (less than 10 seconds) power outages.
Note: The attendant console cannot be powered from the switch cabinet on the System 75 XE.
Additional attendant consoles can be remotely powered by the 346 bulk
power supply or individual power units. Refer to Adjunct Powering
section in this chapter for details on remote powering from adjunct power units located at satellite locations, site locations, or information outlets.
Note: The 329A power unit should not be used as a source of remote power for the attendant console. A KS-22911, L1 or 346A power unit should be used.
4-26
Miscellaneous Wiring Installation
The maximum cabling distance for an attendant console powered from the switch cabinet is 350 feet when using 24-gauge wire.
Installation
Install attendant console as follows:
1.
Unpack console and inspect for damage.
2.
Determine port assignment of console from Attendant Console
Form (see Note).
EXAMPLE: Port Number A 02 01
Carrier Slot Circuit
Note: It is recommended that the primary attendant console be connected to the control carrier. This allows for battery holdover on System 75 and a better chance of uninterrupted service on System 75 XE if a port carrier fails.
3.
If power is to be supplied from the switch cabinet (not available on
System 75 XE), do step 4 and omit step 5; otherwise, go to step 5.
4.
Connect jumpers (-48V and GND)from terminal/connecting block in yellow trunk/auxiliary Field to attendant console appearance on the
station side of the distribution field (Figure 4-16).
5.
If power is to be supplied at cross-connect field, connect power adapter cord to attendant console appearance on the station side and a power unit located above the cross-connect field. If power is not supplied at cross-connect field, provide power as described in
Adjunct Powering section in this chapter.
6. Install patch cord/jumper wires at cross-connect field.
7.
Connect console line jack on bottom of console to information
8.
Install labels per Attendant Console Form and Display Module Form
Assignments.
9. Install handset bracket on left or right side of console, as desired.
4-27
CHAPTER 4. STATION WIRING
10.
Insert handset adapter on same side of handset bracket.
Note: The handset adapter is available in two models:
854A-03 (black) or 854A-143 (burgundy). A bracket is not required for a headset.
11. Connect handset cord to jack on same side of console as handset bracket.
12.
Administer console per AT&T 2System 75 and System 75
XE—lmplementation (555-200-651) and AT&T System 75 and System
75 XE—Administration (555-200-500).
4-28
TRUNK/AUXILIARY
FIELD
GRD
Miscellaneous Wiring Installation
WHEN USING 110-TYPE HARDWARE
TO CONTROL
CARRIER
AUXILIARY
CONNECTOR
-48
PAIR OF WIRES
DISTRIBUTION
FIELD
WHEN USING 66-TYPE HARDWARE
PART OF 66-TYPE CONNECTING
BLOCK ASSOCIATED WITH
AUXILIARY CONNECTOR
PART OF 66-TYPE CONNECTING
BLOCK ASSOCIATED WITH
ATTENDANT CONSOLE APPEARANCE
YELLOW TRUNK/AUXILIARY
FIELD
BLUE STATION
DISTRIBUTION FIELD
Figure 4-16. Wiring Required at Cross-Connect Field for Attendant
Console Remotely Powered From Switch
Cabinet—System 75 Only
4-29
CHAPTER 4. STATION WIRING
Installing Selector Console
Requirements
The selector console is connected to the attendant console by a 3-foot
D8AC cord that is furnished with the selector console (Figure 4-17).
Note: When a basic attendant console, equipped with a selector console, is powered by a 346A power unit, the slide switch on the power unit must be set to the up position. This provides 20 watts of power to the jack located above the slide switch. The console must be connected to this jack.
Installation
1.
Connect the D8AC cord between DXS/BLF jack on bottom of attendant console and modular jack on bottom of selector console.
2.
Install labels per Attendant Console Form.
3.
Administer per AT&T System 75 and System 75 XE—Implementation
( 5 5 5 - 2 0 0 - 6 5 1 ) a n d AT&T System 75 and System 75
XE—Administration (555-200-500).
4-30
Miscellaneous Wiring Installation
SELECTOR
CONSOLE
D8AC
CORD
Figure 4-17. Selector Console Installation
Installing INADS Interface
Requirements
The INADS trunk should appear on the twenty-fifth pair of a RJ21X network interface jack. The INADS trunk is a two-way, rotary dial, loop start trunk that connects to the TN731 maintenance circuit pack through
the INADS terminals at the trunk/auxiliary cross-connect field. Figure
4-18 shows a typical INADS trunk installation.
INADS Interface Installation
Install the INADS interface as follows:
1.
Determine INADS trunk appearance at the green trunk/auxiliary cross-connect field.
2.
Label terminals for INADS trunk appearance (IN).
3.
Install jumpers between INADS trunk appearance (IN) and INADS terminals.
4-31
CHAPTER 4. STATION WIRING
WHEN USING 11O-TYPE HARDWARE
TO NETWORK
INTERFACE
FACILITY
1 PAIR OF WIRES
TO CONTROL
CARRIER
AUXILIARY
CONNECTOR
PART OF 66-TYPE
CONNECTING BLOCK
ASSOCIATED WITH
CENTRAL OFFICE
LEADS
WHEN USING 66-TYPE HARDWARE
PART OF 66-TYPE
CONNECTING BLOCK
ASSOCIATED WITH
AUXILIARY
CONNECTOR
INADS
GREEN
TRUNK/AUXILIARY
FIELD
YELLOW
TRUNK/AUXILIARY
FIELD
Figure 4-18. Connections at Trunk/Auxiliary Field for lNADS Trunk
4-32
Miscellaneous Wiring Installation
Installing DS1 Tie Trunks
DS1 tie trunks provide a 1.544 Mbps digital data service between two colocated System 75 or 75 XEs or between the system and a data network using T1 carrier facilities. The TN722 DS1 tie trunk circuit pack
(R1V2/V3) provides connection capability to the DS1 facility for 24
independent trunks. Table 3-H shows the lead designations for the DS1
circuit pack.
The following connector cables are available to connect the DS1 tie trunk circuit pack to DS1 digital facilities:
● C6C connector cable (comcode 104 307 327)—50-foot long shielded cable equipped with a 50-pin male connector on one end and a 15-pin male connector on the other end. Use this cable to connect a DS1 tie trunk circuit pack to a 551-type Channel Service
Unit (CSU).
●
C6D connector cable (comcode 104 307 376)—50-foot long shielded cable equipped with 50-pin male connectors on each end. Use this cable to connect DS1 tie trunks in colocated System
75 or 75 XEs.
●
C6E connector cable (comcode 104 307 434)—100-foot long shielded cable equipped with a 50-pin male connector on one end and a 50-pin female connector on the other end. Use this cable as an "extension" cable between the DS1 tie trunk circuit pack and the other connector cables.
● C6F connector cable (comcode 104 307 475)—50-foot long shielded cable equipped with a 50-pin male connector on one end and a three inch stub on the other end. This cable is used to connect the DS1 tie trunk circuit pack to channel multiplexers requiring hardwired connections.
4-33
CHAPTER 4. STATION WIRING
C6F CONNECTOR CABLE LEAD IDENTIFICATION
Wire Color
W-G
Lead
Designation
LI*
Connector Pin
Number
47
G LI 22
W-BR LO 48
BR LO* 23
W-S
S
LBACK2
LBACK1
49
24
* Denotes ring or high side of pair.
Colocated DS1 Tie Trunks
Figure 4-19 shows the connections for two DS1 tie trunk circuit packs in colocated System 75s or 75 XEs.
DS1 TIE
TRUNK
CIRCUIT
PACK
TN722
MAXIMUM CABLING
DISTANCE
1310 FEET*
DS1 TIE
TRUNK
CIRCUIT
PACK
TN722
C6D
CONNECTOR
CABLE *
SYSTEM
75 OR 75 XE
SYSTEM
75 OR 75 XE
* FOR DISTANCES OVER 50 FEET USE
C6E CONNECTOR CABLE(S) BETWEEN
C6D CONNECTOR CABLE AND DS1 TIE
TRUNK CIRCUIT PACK.
Figure 4-19. Connections for DS1 Tie Trunks Between Two System
75 or 75 XEs
4-34
Miscellaneous Wiring Installation
DS1 Tie Trunks Using 551-Type CSU
Figure 4-20 shows the connections required to connect a DS1 tie trunk to a T1 CSU. The CSU is required to interface the DS1 tie trunks with the
1.544 Mbps digital facility. For information on installing the CSU, refer to the information provided with the unit. The most frequently used CSUs are the 551A, 551V, 551V EFS/R, and ESF T1. The 551V EFS/R (R means retrofit) can be used to upgrade the 551V to the new Extended
Superframe (ESF) status.
The maximum allowable cabling distance between the DS1 tie trunk and the CSU is:
CSU
551A
551V
551V EFS/R
EFS T1
Max. Cabling Distance (feet)
85
85
655
655
DS1 TIE
TRUNK
CIRCUIT
PACK
TN722
C6C
CONNECTOR
CABLE *
SYSTEM
75 OR 75 XE
* FOR DISTANCES OVER 50 FEET USE
C6E CONNECTOR CABLE(S) BETWEEN
C6C CONNECTOR CABLE AND DS1 TIE
TRUNK CIRCUIT PACK.
T1
CHANNEL
SERVICE
UNIT
TB1
1
> >
J1
2
4
5
T
R
T 1
R 1
1.544 MBPS
DIGITAL
SERVICE
INTERFACE
TO
T1
CARRIER
Figure 4-20. Connections Between DS1 Tie Trunk and T1 CSU
4-35
CHAPTER 4. STATION WIRING
Installing Customer-Provided Alarm—System 75 XE Only
Requirements
The switch provides access to a relay contact that can be used to operate a customer-provided alarm, such as a light, bell, or similar type device. The relay contact can be administered so that it makes contact when a major, minor, or warning alarm condition exists in the switch.
The circuitry required for this feature must be provided by the customer.
The device, connected to the alarm leads, must not exceed a rating of more than 100 volts at 3/4 amp. The contact leads appear at the
cross-connect field on the AUXILIARY connector. Refer to Table 3-H for
the AUXILIARY connector lead assignments.
Installing Off-Premises Station Wiring
Requirements
The cabling outside the building for off-premises stations is provided by the local telephone company. The off-premises stations can appear on any of the RJ21X network interfaces provided for CO trunks. Only a
FCC approved analog type telephone, for example, a 2500-type, can be used as an off-premises station. Figure 4-21 shows the connections for
OFF-PREMISES
TERMINAL
2500
500 (R1V2)
SNEAK
FUSE
PANEL
PART OF CROSS-CONNECT FIELD
TRUNK SIDE SWITCH SIDE
T,R
JUMPERS
GREEN
FIELD
RJ21X
NETWORK
INTERFACE
*A25D
OR
†B25A
CABLE
* USE WITH 11O-TYPE TERMINAL BLOCK
† USE WITH 66-TYPE CONNECTING BLOCK
PURPLE
FIELD
Figure 4-21. Connections For Off-Premises Stations
T
R
TN742 OR
TN769
CIRCUIT
PACK
PORT
4-36
Miscellaneous Wiring Installation off-premises stations. The TN746 analog line circuit pack cannot be used for off-premises stations.
Installation
To install an off-premises station:
1.
Install a B25A cable between the RJ21X network interface and a sneak fuse panel.
2.
At the cross-connect field, connect jumper wires between one row/connecting block in the green field and up to three rows/connecting blocks in the purple field to concentrate the analog
line pairs as shown in Figure 3-56.
3.
When 110-type hardware is used, connect an A25D cable between the sneak fuse panel and the 110 terminal block connector associated with the green row in step 3.
4.
For 110-type hardware, install a green label on the 110-type terminal block to identify the remote location. For 66-type hardware, write the remote location lead designations on the connecting block with a permanent felt-tipped pen.
5.
Administer per AT&T System 75 and System 75 XE—Implementation
(555-200-651) and AT&T System 75 and System 75 XE—
Administration (555-200-500).
Installing Out-of-Building Campus Stations
Out-of-building campus stations are those telephones/voice terminals that are not physically located in the same building as the PBX equipment room but are located on the same property.
Both analog telephones and digital voice terminals can be used as out-ofbuilding stations.
Analog Out-of-Building Stations
Figure 4-22 shows the connections for one to eight off-premises analog
telephones. The TN746 analog line circuit pack cannot be used with offpremise or out-of-building stations. Only analog telephones connected to
TN742 or TN769 analog line circuit packs can be installed out-of-building.
4-37
CHAPTER 4. STATION WIRING
LOCALLY ENGINEERED
OUT-OF-BUILDING
WIRING
356A
ADAPTER
OUT-OF-
BUILDING
ANALOG
TELEPHONES
(NOTE)
B25A
CABLE
MULTI-PAIR PROTECTOR
UNITS (PRIMARY PROTECTORS
WITH HEAT COILS OR EQUIVALENT)
B25A* OR
A25D† CABLE
PART OF CROSS-CONNECT FIELD
STATION
SIDE
SWITCH
SIDE
T
R
TN742 OR
TN769
CIRCUIT
PACK PORT
WHITE
FIELD
JUMPERS
PURPLE
FIELD
NOTE:
THE MAXIMUM CABLING DISTANCE FROM THE SWITCH CABINET
TO OUT-OF-BUILDING VOICE TERMINALS IS 6000 FEET OF 24 AWG WIRE.
* USED WITH 66-TYPE CONNECTING BLOCK
† USED WITH 11O-TYPE TERMINAL BLOCK
Figure 4-22. Connections for One to Eight Out-of-Building Analog
Telephones
Figure 4-23 shows the connections for up to 24 off-premises analog
telephones. Concentration of analog line pairs is used at both buildings to minimize the off-premises wiring required. At the cross-connect field,
4-38
Miscellaneous Wiring Installation jumpers must be connected between one row/connecting block in the white field and up to three rows/connecting blocks in the purple field as shown in
Figure 3-56. At the station location, a WP-90929, List 1 concentrator cable is
used. There are eight station appearances on each of the three fingers of the concentrator cable.
LOCALLY ENGINEERED
OUT-OF-BUILDING
WIRING
356A
ADAPTER
OUT-OF-
BUILDING
ANALOG
TELEPHONES
(NOTE) A25B
CABLE
CONCENTRATOR
CABLE
(WP90929,
LIST 1, CABLE
ASSEMBLY)
B25A* OR
A25D† CABLE
MULTI-PAIR PROTECTOR
UNITS (PRIMARY PROTECTORS
WITH HEAT COILS OR
EQUIVALENT)
PART OF CROSS-CONNECT FIELD
STATION
SIDE
SWITCH
SIDE
T
R
TN742 OR
TN769
CIRCUIT
PACK PORT
WHITE
FIELD
JUMPERS
PURPLE
FIELD
NOTE:
THE MAXIMUM CABLING DISTANCE FROM THE SWITCH CABINET
TO OUT-OF-BUILDING VOICE TERMINALS IS 6000 FEET OF 24 AWG WIRE.
* USED WITH 66-TYPE-CONNECTING BLOCK
† USED WITH 110-TYPE TERMINAL BLOCK
Figure 4-23. Connections for Each Group of Eight Out-of-Building Analog telephones
4-39
CHAPTER 4. STATION WIRING
Carbon block, or equivalent protection is required at both building entrances.
Also sneak current protection is required. Protection can be provided by a
4-type protector or a 3-type protector plus a separate sneak current protector. The 4-type protector is equipped with a heat coil for sneak current protection. The 4-type protector is the preferred device because it eliminates the need to evaluate the interbuilding cable runs and its vulnerability to power cross faults. When the 3-type protector is used, a separate sneak current protector is required. The multi-pair protector units and the off-premises cabling must be locally engineered. Connectorized multi-pair protector units (female 25-pair connector out) are recommended.
The protector units can be ordered from the Premises Distribution Systems
Equipment and Supplies Catalog.
Table 4-A shows the recommended protectors.
Table 4-A. Recommended Protectors
PROTECTORS
Primary *
Primary
(w/heat coil)
3B1A
(carbon)
4B1C
(carbon)
3B1E-W
(wide gap gas tube)
4B1E-W
(wide gap gas tube)
3C1S 4C1S
(solid state) (solid state)
Sneak Current
Protectors *
79A Fuse
SCP-1
* A sneak current protector is always required when a 3-type primary protector is used.
Requirement: If protectors other than those listed in Table 4-A are to be used in domestic installations, they must be UL listed/approved. Also any protectors to be used in Canadian installations must be CSA certified.
The maximum range for protection of out-of-building analog telephones (500-,
2500-, or 7100- types) connected to a TN742 or TN769 analog line circuit pack through a primary protector is 6000 feet when using 24 awg wire and
3600 feet when using 26 awg wire.
4-40
Miscellaneous Wiring Installation
The following voice terminals/telephones cannot be installed in an exposed environment:
● 7300-type voice terminals connected to TN762 hybrid line circuit packs
●
MET sets connected to TN735 MET line circuit packs
● analog telephones connected TN746 analog line circuit packs.
PROTECTOR ORDERING INFORMATION
Description
361A (Carbon Block)
361E-W (Wide Gap Gas Tube)
3C1S (Solid State)
4B1C (Carbon Block with Heat Coil)
4B1E-W (Wide Gap Gas Tube with Heat Coil)
4C1S (Solid State with Heat Coil)
SCP-1 Sneak Current Protector
79A Fuse (sneak current protector)
Comcode
102 381 779
104 410 147
105 514 756
102 904 893
104 401 856
104 386 545
403 617 632
103 351 610
Digital Out-of-Building Voice Terminals
Protection is required at both building entrances for digital out-of-building voice terminals. There are 6 different primary protectors that can be used with the required secondary (data link) protector to protect digital voice terminals in an out-of-building environment.
Primary protectors have a surge breakdown voltage range of 200 to 800 volts at 100 volts per microsecond depending on the type of device. Sneak current protection is also required. It can be provided by a 4-type protector or a 3type protector plus a separate sneak current protector. The 4-type primary protector is equipped with a heat coil for sneak current protection. The 4type primary protector is the preferred device because it eliminates the need to evaluate the interbuilding cable runs and its vulnerability to power cross faults. When the 3-type primary protector is used, a separate sneak current protector is required.
The secondary (data link) protector is required in addition to the primary protector and is installed on the equipment side of the primary protector.
Table 4-B shows the recommended protectors.
4-41
CHAPTER 4. STATION WIRING
Table 4-B. Recommended Protectors
Primary *
3B1A
(carbon)
3B1E-W
(wide gap gas tube)
3C1S
(solid state)
Primary
(w/heat coil)
4B1C
(carbon)
4B1E-W
(wide gap gas tube)
4C1S
(solid state)
PROTECTORS
Secondary
Data Link Protector
(one or eight ckts)
Sneak Current
Protectors *
79A Fuse
SCP-1
* A sneak current protector is always required when a 3-type primary protector is used.
Requirement: If protectors other than those listed in Table 4-B are to be used in domestic installations, they must be UL Iisted/approved. Also any protectors to be used in Canadian installations must be CSA certified.
The maximum range for protection of out-of-building digital voice terminals using a primary and a secondary (data link) protector is 5000 feet when using
24 awg wire and 4000 feet when using 26 awg wire. The secondary (data link) protector used with the 7400-type digital voice terminal is an isolation transformer and requires that the voice terminal be locally powered by an external power supply or through the ac power cord provided with some of the 7400-type voice terminals.
Except for the secondary (data link) protector, all the recommended protectors are plug-in 5-pin untis. There is a variety of 25-, 50-, and 100-pair protector panels that are equipped with 66-, or 110-type connecting blocks and/or RJ21X connectors. The secondary (data link) protector is equipped with 110-type connecting blocks and must be used with a primary protector.
4-42
Miscellaneous Wiring Installation
PROTECTOR ORDERING INFORMATION
Description
3B1A (Carbon Block)
3B1E-W (Wide Gap Gas Tube)
3C1S (Solid State)
4B1C (Carbon Block with Heat Coil)
4B1E-W (Wide Gap Gas Tube with Heat Coil)
4C1S (Solid State with Heat Coil)
Data Link Protector (one ckt)
Data Link Protector (8 ckts)
SCP-1 Sneak Current Protector
79A Fuse (sneak current protector)
Comcode
102 381 779
104 410 147
105 514 756
102 904 893
104 401 856
104 386 545
103 972 758
103 972 733
403 617 632
103 351 610
Figure 4-24 shows the connections for digital out-of-building voice terminals.
4-43
CHAPTER 4. STATION WIRING
4-44
Miscellaneous Wiring Installation
Installing Emergency Transfer Units and Associated
Telephones
Requirements
Emergency transfer capability is provided by a transfer unit mounted on the wall next to the trunk/auxiliary cross-connect field.
Only 500- or 2500-type telephones can be used for emergency transfer.
For R1V2/V3 switches, 500-and 2500-type telephones can also be used as normal extensions. For R1V1 systems, 500-type telephones are used when the CO has only rotary dialing service and they cannot be used as normal extensions. Emergency transfer capability may be provided on CO and Wide Area Telecommunications Service (WATS) trunks.
The following transfer units are available:
●
574-5 power transfer unit—Each unit serves up to five power failure transfer telephones. The unit provides automatic ground start.
● Z1A emergency transfer unit—Each unit serves up to six power failure transfer telephones. A ground-start switch is required at each preselected telephone when ground start trunks are used.
At the cross-connect field, the transfer units are connected to a yellow terminal row/connecting block in the trunk/auxiliary field. The units are powered (-48 V dc) from the EM TRANS RELAY PWR terminals. There are seven EM TRANS RELAY PWR terminal pairs which allows powering of up to seven transfer units.
Installing the 574-5 Power Transfer Unit
The 574-5 power transfer unit has connection for five emergency transfer telephones and is compatible with both loop start and ground
start trunks. Ten slide switches in the center of the unit (Figure 4-25) are
set for the trunk type (two per trunk). The switches are set at the factory for ground start trunks.
4-45
CHAPTER 4. STATION WIRING
TRUNK TYPE SWITCHES
LOOP START
GROUND START
1 2
BOTH SWITCHES MUST BE THROWN
FOR TRUNK TYPE
CIRCUIT
NUMBER
1
2
3
4
5
1 AND 2
3 AND 4
5 AND 6
7 AND 8
9 AND 10
SWITCHES
USE SMALL SCREWDRIVER TO MOVE SWITCH
OPTION SWITCH
Figure 4-25. 574-5 Power Transfer Unit Option Switches
When ground start trunks are used, the transfer unit automatically provides ground start for each trunk without requiring any special wiring at the telephone used for emergency transfer service.
Figures 4-26 and 4-27 shows the connections on 110-type terminal
blocks and 66-type connecting blocks, respectively, at the trunk/auxiliary cross-connect field for a telephone used only for emergency transfer.
Figures 4-28 and 4-29 show the connections on 110-type terminal
blocks and 66-type connecting blocks, respectively, at the trunk/auxiliary cross-connect field for a telephone used for emergency transfer as well as a normal extension.
4-46
Miscellaneous Wiring Installation
4-47
CHAPTER 4. STATION WIRING
PART OF 66-TYPE
CONNECTING BLOCK
ASSOCIATED WITH
CO TRUNK
CIRCUIT PACK
(TN747)
PART OF 66-TYPE
CONNECTING BLOCK
ASSOCIATED WITH
574-5 POWER
TRANSFER UNIT
TC
PART OF 66-TYPE
CONNECTING BLOCK
ASSOCIATED WITH
CENTRAL OFFICE
LEADS
PART OF 66-TYPE
CONNECTING BLOCK
ASSOCIATED WITH
EMERGENCY
TRANSFER TERMINAL
TK
ST
TO BLUE
OR WHITE
FIELD
PART OF 66-TYPE
CONNECTING BLOCK
ASSOCIATED WITH
AUXILIARY
CONNECTOR
GRD
-48V
Figure 4-27. Connections at Trunk/Auxiliary Field Equipped with
66-Type Hardware for Telephone Used Only for Emergency Transfer
4-48
Miscellaneous Wiring Installation
4-49
CHAPTER 4. STATION WIRING
PART OF 66-TYPE
CONNECTING BLOCK
ASSOCIATED WITH
CO TRUNK
CIRCUIT PACK
(TN747)
PART OF 66-TYPE
CONNECTING BLOCK
ASSOCIATED WITH
CENTRAL OFFICE
LEADS
PART OF 66-TYPE
CONNECTING BLOCK
ASSOCIATED WITH
EMERGENCY
TRANSFER TERMINAL
TO BLUE
OR WHITE
FIELD
PART OF 66-TYPE
CONNECTING BLOCK
ASSOCIATED WITH
AUXILIARY
CONNECTOR
TC
TK
PART OF 66-TYPE
CONNECTING BLOCK
ASSOCIATED WITH
574-5 POWER
TRANSFER UNIT
LC
PART OF 66-TYPE
CONNECTING BLOCK
ASSOCIATED WITH
ANALOG LINE
CIRCUIT PACK
(TN742 OR TN769)
ST
GRD
-48V
Figure 4-29. Connections at Trunk/Auxiliary Field Equipped with
66-Type Hardware for Telephone Used for Emergency
Transfer and as Normal Extension lnstalling Optional DID Make-Busy Trunk for Use with 574-5 Power Transfer
Unit
Requirements
Figure 4-30 shows the connections at the trunk/auxiliary cross-connect
field for a direct inward dialing (DID) make-busy trunk. This option prevents DID trunks from being taken out of service by the serving CO during emergency transfer. This trunk is used for this function only and should be assigned to the twenty-fifth pair of a network interface jack.
4-50
Miscellaneous Wiring Installation
WHEN USING 110-TYPE HARDWARE
75
100
DID
MB
1 PAIR OF
WIRES
TO NETWORK
INTERFACE
FACILITY
TO
574-5
POWER
TRANSFER
UNIT
IN-
ADS
WHEN USING 66-TYPE HARDWARE
PART OF 66-TYPE
CONNECTING BLOCK
ASSOCIATED WITH
574-5 POWER
TRANSFER UNIT
PART OF 66-TYPE
CONNECTING BLOCK
ASSOCIATED WITH
CENTRAL
OFFICE LEADS
COM3
NC3
DID
MB
Figure 4-30. Connections at Trunk/Auxiliary Field for DID Make-
Busy Trunk—574-5 Power Transfer Unit
4-51
CHAPTER 4. STATION WIRING
Installation
Connect the DID make-busy trunk as follows:
1.
At the trunk/auxiliary cross-connect field, connect a jumper from one DID make-busy lead to terminal COM3 on the yellow emergency
transfer row/connecting block (Figure 4-30).
2.
Connect a jumper from the other DID make-busy lead to terminal
NC3 on the yellow emergency transfer row/connecting block.
Installing the Power Transfer Unit
Install the 574-5 power transfer unit as follows:
1 .
Mount the power transfer unit on the wall to the left of the trunk/auxiliary cross-connect field. Mount additional units on the wall below the first one in a vertical column.
2 .
Connect a B25A (for 110-type hardware) or A25B (for 66-type
hardware) cable from the power transfer unit to the connector associated with the yellow emergency transfer row/connecting block in the trunk/auxiliary cross-connect field.
Installing Telephone Associated with 574-5 Power Transfer Unit
Trunk/Auxiliary Field Connections—Telephone Used Only for Emergency
Transfer
Install telephone as follows:
1.
At trunk/auxiliary cross-connect field, connect a pair of wires between the -48V and GRD terminals on the yellow emergency transfer row/connecting block and the EM TRANS RELAY PWR
terminal (Figures 4-28 and 4-29, respectively for 110-type and
66-type hardware).
2.
Connect CO trunk leads from the purple field to TC terminals on the yellow emergency transfer row/connecting block for each trunk.
3.
Connect CO trunk leads from the green field to TK terminals on the yellow emergency transfer row/connecting block for each trunk.
4.
Connect ST leads on the yellow emergency transfer row/connecting block for each emergency transfer telephone to the ST terminal
appearance in the yellow trunk/auxiliary field (see Note).
4-52
Miscellaneous Wiring Installation
Note: The ST terminal leads should be terminated on the following pairs: 1, 4, 7, 10, 13, 16, 19, or 22 (the first pair of any
3-pair group).
5.
Connect the ST leads from the terminal selected in Step 4 to the
assigned terminal in the blue or white station distribution field.
Trunk/Auxiliary Field Connections—Telephone Used for Emergency
Transfer and as a Normal Extension
Connect telephone as follows:
At trunk/auxiliary field, connect a pair of wires between the -48V and
GRD terminals on the yellow emergency transfer row/connecting block
to the EM TRANS RELAY PWR terminal (Figures 4-26 and 4-27,
respectively for 110-type and 66-type hardware).
1.
Connect CO trunk leads from the purple field to TC terminals on the yellow emergency transfer row/connecting block for each trunk.
2.
Connect CO trunk leads from the green field to TK terminals on the yellow emergency transfer row/connecting block for each trunk.
3.
Connect telephone leads from the purple analog line board row/connecting block to the LC terminals on the yellow emergency transfer row/connecting block for each telephone.
4.
Connect ST leads on the yellow emergency transfer row/connecting block for each emergency transfer telephone to the ST terminal appearance in the purple trunk/auxiliary field.
5.
Connect the ST leads from the terminal selected in Step 4 to the assigned terminal in the blue or white station distribution field.
Telephone Installation
Install telephone assigned to emergency transfer as follows:
1 .
Connect telephone to the information outlet.
2 .
Install patch cords/jumper wires between the switch side and the station side of the station distribution cross-connect field.
4-53
CHAPTER 4. STATION WIRING
Installing the Z1A Emergency Transfer Unit
If a Z1A emergency transfer unit is used with CO trunks that require ground start, a ground start switch must be installed on each telephone to be used for emergency transfer. Ground is provided on the twenty-fifth pair of leads on each purple row/connecting block associated with a switch cable. Ground is connected to the third pair of a 3-pair terminal appearance. This pair becomes the second pair at the information outlet. A ground start switch is mounted on the side of the telephone and wired to the ground and ring leads inside the terminal.
Figures 4-31 and 4-32 show the connections on 110-type terminal
blocks and 66-type connecting blocks, respectively, at the trunk/auxiliary
field for a telephone used only for emergency transfer. Figures 4-33 and
4-34 show the connections on 110-type terminal blocks and 66-type connecting blocks, respectively, at the trunk/auxiliary field for a telephone used for emergency transfer as well as a normal extension.
4-54
Miscellaneous Wiring Installation
4-55
CHAPTER 4. STATION WIRING
PART OF 66-TYPE
CONNECTING BLOCK
ASSOCIATED WITH
CO TRUNK
CIRCUIT PACK
(TN747)
TC
GND
GND
PART OF 66-TYPE
CONNECTING BLOCK
ASSOCIATED WITH
EMERGENCY
TRANSFER TERMINAL
PART OF 66-TYPE
CONNECTING BLOCK
ASSOCIATED WITH
CENTRAL OFFICE
LEADS
TK
ST
PART OF 66-TYPE
CONNECTING BLOCK
ASSOCIATED WITH
Z1A EMERGENCY
TRANSFER UNIT
PART OF 66-TYPE
CONNECTING BLOCK
ASSOCIATED WITH
AUXILIARY
CONNECTOR
GRD
-48V
Figure 4-32. Connections at Trunk/Auxiliary Field Equipped with
66-Type Hardware for Telephone Used Only for Emergency Transfer (Ground Start Trunks)
4-56
Miscellaneous Wiring Installation
4-57
CHAPTER 4. STATION WIRING
PART OF 66
CONNECTING BLOCK
ASSOCIATED WITH
CO TRUNK
CIRCUIT PACK
(TN747)
T C
PART OF 66
CONNECTING BLOCK
ASSOCIATED WITH
Z1A EMERGENCY
TRANSFER UNIT
GND
GND
PART OF 66
CONNECTING BLOCK
ASSOCIATED WITH
EMERGENCY
TRANSFER TERMINAL
PART OF 66
CONNECTING BLOCK
ASSOCIATED WITH
CENTRAL OFFICE
LEADS
TK
ST
LC
PART OF 66
CONNECTING BLOCK
ASSOCIATED WITH
ANALOG LINE
CIRCUIT PACK
(TN742 OR TN769)
PART OF 66
CONNECTING BLOCK
ASSOCIATED WITH
AUXILIARY
CONNECTOR
GND
-48V
Figure 4-34. Connections at Trunk/Auxiliary Field Equipped with
66-Type Hardware for Telephone Used for Emergency
Transfer and as Normal Extension (Ground Start
Trunks)
4-58
Miscellaneous Wiring Installation
Installing Optional DID Make-Busy Trunk for Use with Z1A Emergency
Transfer Unit
Requirements
Figure 4-35 shows the connections at the trunk/auxiliary cross-connect
field for an optional DID make-busy trunk. This option prevents DID trunks from being taken out of service by the serving CO during emergency transfer. This trunk is dedicated to this purpose and appears on the twenty-fifth pair of a network interface jack.
4-59
CHAPTER 4. STATION WIRING
WHEN USING 66-TYPE HARDWARE
PART OF 66-TYPE
CONNECTING BLOCK
ASSOCIATED WITH
Z1A EMERGENCY
TRANSFER UNIT
PART OF 66-TYPE
CONNECTING BLOCK
ASSOCIATED WITH
CENTRAL
OFFICE LEADS
DID
MB
T K
S T
WHEN USING 11O-TYPE HARDWARE
75
100
DID
MB
1 PAIR OF
WIRES
TO NETWORK
INTERFACE
FACILITY
TK LC ST PWR
IN-
ADS
TO
Z1A
EMERGENCY
TRANSFER
UNIT
Figure 4-35. Connections at Trunk/Auxiliary Field for Optional DID
Make-Busy Trunk—Z1A Emergency Transfer Unit
4-60
Miscellaneous Wiring Installation
Installation
Make connections as follows:
1.
At cross-connect field, connect a jumper from one DID make-busy lead to the TK terminal (first appearance) on the yellow emergency
transfer row/connecting block (Figure 4-35).
2.
Connect a jumper from the other DID make-busy lead to the ST terminal (first appearance) on the yellow emergency transfer row/connecting block.
Installing the Z1A Emergency Transfer Unit
Install the Z1A emergency transfer unit as follows:
1.
Mount emergency transfer unit on the wall to the left of the trunk/auxiliary cross-connect field. Mount additional units on the wall below the first one in a vertical column.
2.
Connect a B25A (for 110-type hardware) or A25B (for 66-type
hardware) cable from the emergency transfer unit to the connector associated with the yellow emergency transfer row/connecting block in the trunk/auxiliary cross-connect field.
Installing Telephone Associated with Z1A Emergency Transfer Unit
Trunk/Auxiliary Field Connections—Telephone Used Only for Emergency
Transfer
Install telephone as follows:
1.
At trunk/auxiliary cross-connect field, connect a pair of wires between the -48V and GRD terminals on the yellow emergency transfer row/connecting block to the EM TRANS RELAY PWR
terminal (Figures 4-31 and 4-32, respectively for 110-type and
66-type hardware).
2.
Connect CO trunk leads from the purple field to TC terminals on the yellow emergency transfer row/connecting block for each trunk.
3.
Connect CO trunk leads from the green field to TK terminals on the yellow emergency transfer row/connecting block for each trunk.
4-61
CHAPTER 4. STATION WIRING
4.
Connect ST leads on the yellow emergency transfer row/connecting block for each emergency transfer telephone to the ST terminal appearance in the yellow trunk/auxiliary cross-connect field (see
Note).
Note: The ST terminal leads should be terminated on the following pairs: 1, 4, 7, 10, 13, 16, 19, or 22 (the first pair of any
3-pair group).
5.
Connect the ST leads from the terminal selected in Step 4 to the assigned terminal in the blue or white station distribution field.
6.
If ground start is required, connect two wires from the ground terminals to the third pair of each emergency telephone appearance on the yellow trunk/auxiliary row created in Step 4. Loop the wires from the first appearance through to the last appearance if enough
ground terminals are not (Figure 4-36).
4-62
Miscellaneous Wiring Installation
WHEN USING 66-TYPE HARDWARE
TO GROUND
TERMINALS
WHEN USING 110-TYPE HARDWARE
TO GROUND
TERMINALS
FIRST
APPEARANCE
LAST
APPEARANCE
Figure 4-36. Ground Wiring Example (Three Telephones Used Only for Emergency Transfer)
4-63
CHAPTER 4. STATION WIRING
Trunk/Auxiliary Field Connections—Telephone Used for Emergency
Transfer and as a Normal Extension
Connect telephone as follows:
At trunk/auxiliary cross-connect field, connect a pair of wires between the -48V and GRD terminals on the yellow emergency transfer row/connecting block and the EM TRANS RELAY PWR terminal (Figures
4-33 and 4-34, respectively for 110-type and 66-type hardware).
1.
Connect CO trunk leads from the purple field to TC terminals on the yellow emergency transfer row/connecting block for each trunk.
2.
Connect CO trunk leads from the green field to TK terminals on the yellow emergency transfer row/connecting block for each trunk.
3.
Connect telephone leads from the purple analog line board row/connecting block to the LC terminals on the yellow emergency transfer row/connecting block for each telephone.
4.
Connect ST leads on the yellow emergency transfer row/connecting block for each emergency transfer telephone to the ST terminal appearance in the purple trunk/auxiliary cross-connect field.
5.
Connect the ST leads from the terminal selected in Step 4 to the assigned terminal in the blue or white station distribution field.
6.
If ground start is required, connect two wires from the ground terminals to the third pair of each emergency telephone appearance on the yellow trunk/auxiliary row created in Step 5. Loop the wires from the first appearance through to the last appearance if enough
ground terminals are not (Figure 4-37).
4-64
Miscellaneous Wiring Installation
TO GROUND
TERMINALS
WHEN USING 66-TYPE HARDWARE
WHEN USING 110-TYPE HARDWARE
LAST
APPEARANCE
FIRST
APPEARANCE
TO GROUND
TERMINALS
Figure 4-37. Ground Wiring Example (Five Telephones Used for
Emergency Transfer and as Normal Extensions)
Telephone Installation
Install telephones assigned to emergency transfer as follows:
1.
2.
Remove cover from 551A key.
4-65
CHAPTER 4. STATION WIRING
3.
Mount base of 551A key to 77A bracket using screws provided with bracket.
4.
Remove housing from 500- or 2500-type telephone.
5.
Connect wire from red lead (R) on telephone through 551A key to yellow and/or black lead on telephone.
6.
Replace cover on 551A key.
7.
Place groove in bracket over lip of telephone base (Figure 4-38).
8.
9.
Replace telephone housing.
Repeat Steps 2 through 8, as required.
10.
11.
Connect telephones to the information outlets.
Install patch cords/jumper wires between the switch side and the terminal side of the station distribution field.
4-66
Figure 4-38. Ground Start Key Installation
Miscellaneous Wiring Installation
Installing External Ringing
Requirements
Figure 4-39 shows the connections for external ringing, which is
provided by a device, such as a gong, chime, or bell, connected to an information outlet. The switch side of the cross-connect field is connected to a TN742 or TN769 analog line circuit pack located in a port carrier. The TN742 or TN769 circuit pack contains eight ports.
A maximum of 3 devices can be connected to one TN742 or TN769 circuit pack port.
Installation
Install ringing device as follows:
1.
Determine port assignment of Call Answer From Any Voice Terminal
(CAAVT) feature from Console Parameters Form:
EXAMPLE: Port Number B 02 01
Carrier Slot Circuit
2.
Install patch cord/jumper wires at cross-connect field.
3.
Mount the ringing device at location specified on the External
Ringing Device Worksheet.
4.
Connect a 2-pair line cord (modular plug at one end) from the
information outlet to the ringing device (Figure 4-39).
5.
Connect red (R) and green (T) leads to the ringing device.
6.
Administer per AT&T System 75 and System 75 XE—Implementation
( 5 5 5 - 2 0 0 - 6 5 1 ) a n d AT&T System 75 and System 75
XE—Administration (555-200-500).
4-67
CHAPTER 4. STATION WIRING
AC LAMP
OR
RINGING
DEVICE
R RED
T GREEN
STATION WIRING
INFORMATION
OUTLET
SATELLITE,
SITE, OR
ADAPTER
LOCATION
PART OF CROSS-CONNECT FIELD
STATION SIDE SWITCH SIDE
T
R
TN742 OR
TN769
CIRCUIT
PACK
LINE
CORD
BLUE OR
WHITE
FIELD
110P6A
PATCH
CORD OR
JUMPERS
PURPLE
FIELD
Figure 4-39. Connections for External Ringing or Queue Warning
Indicator
Installing Queue Warning Indicator
Requirements
Figure 4-39 shows the connections for the queue warning indicator. An ac indicator (lamp) such as a 21C49 is optional for use as a queue warning indication in a Uniform Call Distribution (UCD)/Direct
Departmental Calling (DDC) queue. The lamp is connected to an information outlet. The switch side of the cross-connect field is connected to a TN742 or TN769 analog Line circuit pack located in a port carrier. The TN742 or TN769 circuit packs each contain eight ports.
Installation
Install queue warning indicator as follows:
1.
Determine port assignment for queue warning indicator from Hunt
Group Form:
EXAMPLE: Port Number B 0 2 01
Carrier Slot Circuit
2.
Install patch cord/jumper wires at cross-connect field.
4-68
Miscellaneous Wiring Installation
3.
Mount indicator at specified location.
4.
Connect a 2-pair line cord (modular plug at one end) from the
information outlet to the indicator (Figure 4-39).
5.
Connect red (R) and green (T) leads to the indicator.
6.
Administer per AT&T System 75 and System 75 XE—Implementation
( 5 5 5 - 2 0 0 - 6 5 1 ) a n d AT&T System 75 and System 75
XE—Administration (555-200-500).
4-69
CHAPTER 5. AUXILIARY EQUIPMENT
INSTALLATION
Auxiliary Equipment Description
Installing Loudspeaker Paging and Music-on-Hold
Requirements
Installing Loudspeaker Paging Access—278A Paging Adapter
Requirements
Installation
Installing Loudspeaker Paging Access—89A Control Unit
Requirements
Installation
Installing PagePac® Paging System
General
PagePac 20
Installing PagePac VS
Installing PagePac 50/100/200
Installing Music-on-Hold Access
Requirements
Installation—FCC Registered Music Source
Installation—Non-FCC Registered Music Source
Installing Loudspeaker Paging With Background Music
Requirements
Installation Using 278A Adapter
Installation Using 89A Control Unit
Installing Recorded Announcement Equipment
Requirements
Installation—FCC Registered Recorded Announcement
Equipment lnstallation—Non-FCC Registered Recorded Announcement
Equipment
Digital Announcer
Requirements
Installation
Installing Audichron Wake-Up Announcement System—R1V3
Only
Requirements
Installation
Installing Dial Dictation Equipment
Installing 3270 Data Modules
Requirements
5-25
5-26
5-26
5-27
5-28
5-28
5-29
5-32
5-33
5-33
5-1
5-3
5-3
5-5
5-5
5-7
5-8
5-8
5-10
5-11
5-11
5-11
5-13
5-14
5-16
5-16
5-19
5-19
5-20
5-20
5-20
5-21
5-22
5-22
5-25
-i-
-ii-
Installation
Installing Processor Data Modules (PDMs)
Requirements
Installation
Installing AP Interface—System 75 only
Requirements
Installation of AP Alarms
Installing AUDIX Interface—R1V3 Only
Requirements
Installing CMS Interface—R1V3 Only
Requirements
Installing DCS—R1V2 and R1V3
Requirements
Installing PMS Interface—R1V3 Only
Requirements
Installing Customer-Provided Terminal Using ADUs
Requirements
Installation
Installing SMDR Interface
Interface Cabling to SMDR Output Device
PDM, Trunk Data Module, or 212-Type Modem Switch
Settings
Installing lSN Interface
Installing STARLAN NETWORK Interface
Installing Premises Lightwave System (PLS) Interface
Installing Processor Interface/EIA Port
5-33
5-36
5-36
5-37
5-39
5-39
5-40
5-42
5-42
5-42
5-42
5-43
5-43
5-44
5-44
5-45
5-45
5-45
5-45
5-46
5-49
5-49
5-52
5-53
5-55
Figures
Connections for Loudspeaker Paging and
Connections for Loudspeaker Paging—278A
Connections for Louspeaker Paging—89A Control
Connections for PagePac 20 Without Zone-Mate 9 or 39
Connections for PagePac 20 With Zone-Mate 9 or
Connections for PagePac 50/100/200 Amplicenter
Connections for PagePac 50/100/200 System
Connections for FCC Registered Equipment
Provided for Music-on-Hold/Dial Dictation
Connections for Non-FCC Registered Equipment
Provided for Music-on-Hold/Dial Dictation
Loudspeaker Paging With Background Music
Loudspeaker Paging With Background Music
Connections for FCC Registered Equipment
Provided for Recorded Announcement/Dial
Dictation Equipment (Analog Access)
Connections for Non-FCC Registered Recorded
Announcement/Dial Dictation Equipment (Analog
Connections for Digital Announcer Mounted in
Connections for Analog Line Port to Wake-Up
Connections for Auxiliary Trunk Circuit Pack to
Connections for Power Unit to Wake-Up
Connections for 3270A or 3270T Data Module
Connections for 3270C Data Module
-iii-
Connections for PDMs in Data Mounting
Connections for Individual PDMs
Connections at Trunk/Auxiliary Field for
Connections to ADU for Data Terminal Equipment
SMDR Cabling for Data Terminal Equipment
SMDR Cabling for On-Premises Data
SMDR Cabling for a Remote Host
System Voice Circuits and ISN Data Circuits
System Voice Circuits and STARLAN NETWORK
Data Circuits Sharing an Information Outlet
System Voice Circuits and PLS Data Circuits
Direct Connections for Processor Interface/EIA
Ports Between Two System 75s or 75 XEs
Modem Connections for Processor Interface/EIA
Ports Between Two System 75s or 75 XEs
-iv-
Cable Routing From Switch Cabinet to
Cross-Connect Field (Using Bottom Terminal
Cable Routing Through Cable Slack
Manager—Single-Cabinet Installation (Using
Connectorized Top Terminal Blocks)
Cable Routing Through Cable Slack
Manager—Single-Cabinet Installation (Using
Connectorized Bottom Terminal Blocks)
Cable Routing Through Cable Slack
Manager—Single-Cabinet Installation (Using
66-Type Connecting Blocks With Cables Routed
From Top of Cross-Connect Field)
Cable Routing Through Cable Slack
Manager—Single-Cabinet Installation (Using
66-Type Connecting Blocks With Cables Routed
From Bottom of Cross-Connect Field)
Typical Port Cable Installation at Switch Cabinet
Control Carrier Outputs (AUXILIARY
Control Carrier Outputs (AUXILIARY
System 75, Slot Addresses for 2-Carrier Cabinet
System 75, Slot Addresses for 5-Carrier Cabinet
System 75 XE Carrier Slot Addresses
Connecting Trunk Pairs Used for 1-Pair Trunk
Circuits; DID, Loop Start, Ground Start Using
Example of Establishing 3-Pair Modularity for Trunk
Pairs Used for 1-Pair Trunk Circuits; DID, Loop
Example of Establishing 3-Pair Modularity for Trunk
Pairs Used for 3-Pair Tie Trunks
Installing the Coupled Bonding Conductor
4-Pair Single Modular Plug-Ended Station Cable
Example of Extending 4-Pair Station Cables
4-Pair Circuit Distribution and Connectivity From
Equipment Room Cross-Connect Field
4-Pair Home Run to Equipment Room or Satellite
-v-
Example of 4-Pair Home Run to Equipment Room or Satellite Location Using Modular Plug-Ended
3-Pair to 4-Pair Circuit Distribution and Connectivity
From Equipment Room Using 110-Type Hardware
3-Pair to 4-Pair Circuit Distribution and Connectivity
From Equipment Room Using 66-Type Hardware.
3-Pair to 4-Pair Circuit Distribution and Connectivity
From Equipment Room Using a 356A adapter
-vi-
Tables
Distribution Field—110A-Type Terminal Blocks
Distribution Field—300-Pair 110P-Type Terminal
Distribution Field—900-Pair 110P-Type Terminal
110-Type Hardware Requirements
Lead Designations at Cross-Connect Field
Auxiliary Lead Appearances at 66-Type
-vii-

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