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1a processor: Maintenance software
Comprehensive maintenance software is required to meet the system reliability objective of less than an average of 2 minutes per year of outage from all causes. The function and interrelationship ofExpand
1A voice storage system: Software
TLDR
The new Custom Calling Services II (CCS II) have been provided by adding a 1A Voice Storage System (1A VSS) as a new node in the Stored Program Control network. Expand