BE762143A -
CIRCUIT ARRANGEMENT TO SUPERVISE SUBSCRIBER LINES IN TELECOMMUNICATION SYSTEMS AND MORE PARTICULARLY IN TELEPHONE SWITCHING SYSTEMS
- Google Patents
CIRCUIT ARRANGEMENT TO SUPERVISE SUBSCRIBER LINES IN TELECOMMUNICATION SYSTEMS AND MORE PARTICULARLY IN TELEPHONE SWITCHING SYSTEMS
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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
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Engineering & Computer Science
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Computer Networks & Wireless Communication
(AREA)
Interface Circuits In Exchanges
(AREA)
BE762143A1970-01-281971-01-28
CIRCUIT ARRANGEMENT TO SUPERVISE SUBSCRIBER LINES IN TELECOMMUNICATION SYSTEMS AND MORE PARTICULARLY IN TELEPHONE SWITCHING SYSTEMS
BE762143A
(en)