Table of Contents
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1
Regulatory Information (U.S.A.) ...........................................................................................................1-1
Telephone Company Notification ................................................................................................1-1
Incidence of Harm ..............................................................................................................................1-1
Changes in Service .............................................................................................................................1-2
Maintenance Limitations .................................................................................................................1-2
Hearing Aid Compatibility ..............................................................................................................1-2
UL/CSA Safety Compliance .............................................................................................................1-2
Notice of Compliance .......................................................................................................................1-2
Toll Fraud and DISA Disclaimer ............................................................................................................1-3
2
DHS General Description ........................................................................................................................2-1
System Technology ...........................................................................................................................2-1
System Components .........................................................................................................................2-1
External Components .......................................................................................................................2-2
System Administration .....................................................................................................................2-3
Key Service Unit (KSU) ......................................................................................................................2-3
Power Supply .......................................................................................................................................2-4
Central Processor Unit (CPU) ..........................................................................................................2-4
3 x 8 Module .........................................................................................................................................2-4
6-Port CO Module ..............................................................................................................................2-5
Standard MOH/BGM Module .........................................................................................................2-6
Option Module ....................................................................................................................................2-6
Digital Key Telephones ....................................................................................................................2-7
2-Port Analog Adapter .................................................................................................................. 2-11
Two-Port Analog Expander ......................................................................................................... 2-12
DHS Technical Specification Tables ................................................................................................. 2-13
Preparation for DHS Installation ....................................................................................................... 2-22
Installation Overview ..................................................................................................................... 2-22
General Site Considerations ........................................................................................................ 2-23
Necessary Tools and Supplies .................................................................................................... 2-23
DHS Installation ...................................................................................................................................... 2-25
System Check-Out .................................................................................................................................. 2-53
Power Up Sequence ....................................................................................................................... 2-53
Feature Upgrade Procedure ............................................................................................................... 2-54
Contents
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Table of Contents
