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PSTN operation and maintenance (Q.513)
nDifferent alarm classes
nVital functions and circuits
(as SS7 and group switch)
use secured paths and
backups
Procedures provided for:
(as SS7 and group switch)
use secured paths and
backups
Procedures provided for:
ntroubleshooting
nfault diagnostics
nhardware faults can
be isolated
be isolated
nSupervision is realized also
by connecting maintenance
units to the network
by connecting maintenance
units to the network
nImportant switches have
extensive backup equipment
extensive backup equipment
A supervision plan by
network levels:
network levels:
