AT&T DEFINITY 2500 series Bedienerhandbuch Seite 170
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POWER AND GROUNDING
Figure 25 depicts a typical power and grounding layout for colocated PPN and EPN cabinets. A
ground wire from the ground block on the EPN cabinet connects to the single-point ground block
on the PPN cabinet. A 6-AWG ground wire connects the single-point ground block on the PPN
cabinet to an approved ground. (Also see “Grounding,” later in this section).
Note that the AC powering for a multicarrier cabinet
EXPANSION PORT
NETWORK CABINET
is as shown in Figure 15 for the PPN cabinet.
PROCESSOR PORT
NETWORK CABINET
FRONT
FRONT
6 AWG
SINGLE-POINT
GROUND BLOCK
POWER
DISTRIBUTION
UNIT
POWER
DISTRIBUTION
UNIT
6 AWG
TO AUXILIARY
CABINET
GROUND BLOCK
REAR
POWER CORD COUPLED
POWER
10 FEET
NEMA 5-50
BONDING
CORD
10 AWG
TO APPROVED
OR
CONDUCTOR
10 FEET
6 AWG
GROUND
L6-30R 10 AWG
10 AWG
(SEE NOTE)
RECEPTACLE,
OR EQUIVALENT
120-VOLT
60-HZ 50-AMP
CUSTOMER
60-HZ 50-AMP
OR
PROVIDED
OR
208-VOLT
POWER
208-VOLT
60-HZ 30-AMP
PANEL
60-HZ 30-AMP
SERVICE
SERVICE
COUPLED
BONDING
CONDUCTOR
NOTE:
USE APPROVED GROUND LOCATED NEAREST THE
TELEPHONE COMPANY OWNED PROTECTOR GROUND BLOCK
AT THE BUILDING ENTRANCE FACILITY
FIGURE 25. Typical Multicarrier System AC Power and Grounding (EPN Colocated)
160
- AT&T 1
- Contents 3
- INTRODUCTION 11
- How to Use This Document 13
- CONFIGURATION GUIDELINES 15
- Survey Steps 16
- CONFIGURATION GUIDELINES 32
- Step 4—Required System Forms 37
- Step 5—Trunk Groups 37
- Call Management System (CMS) 40
- Hospitality Features 41
- Step 8—End User Survey 41
- Step 9—Group Forms 42
- Step 10—Voice Terminals/BCTs 42
- Step 11—Review 42
- FEATURE DETERMINATION 43
- SYSTEM PARAMETERS 67
- PARAMETERS 70
- Notation Meaning 80
- SYSTEM VERSION DETERMINATION 81
- Voice/Data Terminal 83
- Voice and/or 84
- Number (Voice/Data) 84
- Equipment Adjunct(s) 84
- TABLE J (continued) 86
- Terminal 87
- Function Quantity 87
- Instructions 88
- Data Communications Equipment 90
- Data Modules 93
- Z702AL1-DSU Data Module Base 93
- 3270 Data Module 95
- Pooled Modem 95
- Data Communications Adjuncts 96
- Remote Administration 99
- TABLE O. System Printers 101
- – IBM computer 101
- TABLE O (continued) 102
- System Printers 102
- Traffic Considerations 110
- Network Access Facilities 111
- Circuit Pack Determination 113
- W Analog Tie 120
- W Analog Tie 120
- TABLE AA. Recommended 123
- (TN429 - G3i-Global Only) 128
- ISDN-BRI LINE (TN556) 130
- DS1 TIE TRUNK (TN722) 131
- SPEECH SYNTHESIZER (TN725) 131
- DATA LINE (TN726) 131
- MET LINE (TN735) 132
- ANALOG LINE (TN742) 132
- Analog Line Circuit Packs 133
- Feature TN742 133
- TN769 TN746 TN746B 133
- CALL CLASSIFIER (TN744) 134
- ANALOG LINE (TN746) 138
- CENTRAL OFFICE TRUNK (TN747) 139
- TONE DETECTOR (TN748) 139
- ANNOUNCEMENT (TN750) 140
- DIGITAL LINE (TN754) 141
- POOLED MODEM (TN758) 141
- TIE TRUNK (ANALOG) (TN760) 142
- HYBRID LINE (TN762) 142
- AUXILIARY TRUNK 143
- DS1 TIE TRUNK (TN767) 143
- TONE CLOCK (TN768) 144
- TONE CLOCK (TN780) 145
- Circuit Pack 147
- Description PEC 147
- Quantity 147
- Software Determination 148
- Ordering Information 154
- ENVIRONMENTAL REQUIREMENTS 157
- Earthquake Protection 158
- Floor Space 158
- Desktop Space 164
- Wall Space Required 164
- Temperature and Humidity 165
- Air Purity 166
- Lighting 166
- Additional Considerations 167
- With Multicarrier Cabinet(s) 168
- POWER AND GROUNDING 169
- Single-Carrier Cabinet System 172
- DC Power Requirements 176
- Grounding 182
- Lightning Protection 183
- Sneak Current Protection 183
- House Wiring 187
- UPGRADES AND ADDITIONS 189
- Duplication 191
- With Duplication 193
- UPGRADES 195
- ADDITIONS 195
- Attendant Console Replacement 195
- EPN MCC Without Duplication 197
- EPN MCC With Duplication 198
- EPN SCC Without Duplication 199
- EPN SCC With Duplication 200
- Additions to the System 203
- REFERENCES 205
- ABBREVIATIONS AND ACRONYMS 209
- ABBREVIATIONS 210
- ABBREVIATIONS AND ACRONYMS 213
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