NEC SV8500 Operation And Maintenance Manual - page 726
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CHAPTER 6
Routine Maintenance Procedure
2.3 Routine Maintenance Check List
This section provides check lists (Maintenance Procedure Reports) used when performing routine maintenance
Routine Maintenance Check Lists consist of the following:
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Maintenance Procedure Report
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C.O. Trunk/TIE Line
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Register/Sender Trunk (RST)
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Digital Conference Function
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Speech Path for each PIR, and Ringing Generator Unit
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Attendant/Desk Console