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H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme
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Engineering & Computer Science
(AREA)
Computer Networks & Wireless Communication
(AREA)
Relay Circuits
(AREA)
Exchange Systems With Centralized Control
(AREA)
Monitoring And Testing Of Exchanges
(AREA)
Testing Electric Properties And Detecting Electric Faults
(AREA)