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n |
Different alarm
classes
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n |
Vital functions
and circuits
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(as SS7 and group switch)
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use secured
paths and
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backups
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Procedures
provided for:
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n |
troubleshooting
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n |
fault
diagnostics
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n |
hardware faults
can
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be isolated
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n |
Supervision is
realized also
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by connecting
maintenance
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units to the
network
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n |
Important
switches have
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extensive
backup equipment
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