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
Summary of Contents for System 75
Page 1: ...AT T AT T System 75 and System 75 XE Wiring...
Page 2: ...AT T AT T System 75 and System 75 XE Wiring 555 200 111 Issue 2 August 1989...
Page 16: ...System Wiring Figure 1 2 System Uniform Wiring Plan 1 7...
Page 17: ...CHAPTER 1 INTRODUCTION Figure 1 3 Sample Uniform Wiring Installation 1 8...
Page 29: ...CHAPTER 2 HARDWARE 66 110 Type Figure 2 1 Block Diagram of System 75 or 75 XE Installation 2 2...
Page 35: ...CHAPTER 2 HARDWARE 66 110 Type Figure 2 4 110A Type 100 Pair Terminal Block 2 8...
Page 36: ...110 Type Hardware Description Figure 2 5 110A Type 300 Pair Terminal Block 2 9...
Page 98: ...Typical System Equipment Room Floor Plans 3 15...
Page 143: ...CHAPTER 3 EQUIPMENT ROOM DESIGN 3 60...
Page 144: ...Equipment Room Hardware And Cabling Installation 3 61...
Page 162: ...Equipment Room Hardware And Cabling Installation 3 79...
Page 163: ...Equipment Room Hardware And Cabling Installation 3 80...
Page 197: ...Tables Table 4 A Recommended Protectors 4 42 v...
Page 212: ...Adjunct Powering 4 15...
Page 214: ...Adjunct Powering 4 17...
Page 216: ...Patch Cord Jumper Installation And Administration 4 19...
Page 241: ...CHAPTER 4 STATION WIRING 4 44...
Page 244: ...Miscellaneous Wiring Installation 4 47...
Page 246: ...Miscellaneous Wiring Installation 4 49...
Page 252: ...Miscellaneous Wiring Installation 4 55...
Page 254: ...Miscellaneous Wiring Installation 4 57...
Page 314: ...CHAPTER 5 AUXILIARY EQUIPMENT INSTALLATION 5 41...
Page 324: ...CHAPTER 5 AUXILIARY EQUIPMENT INSTALLATION 5 51...