AT&T DEFINITY 2500 series Manual de instrucciones Pagina 167
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ENVIRONMENTAL REQUIREMENTS
Additional Considerations
Noise and heat produced by the system also affect the selection of equipment location.
Acoustic Noise Levels
The acoustic noise levels for the various cabinet configurations are described below.
With Multicarrier Cabinet(s)
The noise produced by a cabinet with five carriers is 51, 53, and 56 dBa at low, medium, and
high fan speeds, respectively, at a distance of 5 feet.
Note:
If the system cabinet door is open, there is an additional 1 dBa of noise. The tape
drive also causes additional noise. When the tape drive is reading data, there is an
additional 1 dBa of noise. When the tape recorder is rewinding or fast winding, there
is an additional 2 dBa of noise.
With Single-Carrier Cabinet(s)
The noise produced by the system is as follows:
● One cabinet— 48 dBa at a distance of 5 feet
● Two cabinets—50 dBa at a distance of 5 feet
● Three cabinets—52 dBa at a distance of 5 feet
● Four cabinets—53 dBa at a distance of 5 feet
Note:
If the system cabinet door is open, there is an additional 1 dBa of noise. The tape
recorder also causes additional noise. When the tape recorder is reading data, there
is an additional 2 dBa of noise. When the tape recorder is rewinding or fast winding,
there is an additional 4 dBa of noise.
Heat Dissipation
The amount of heat dissipated by DEFINITY cabinet configurations is described on the following
page.
157
- 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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