AT254285B -
Circuit arrangement for telecommunication, in particular telephone systems with direct current supply of the subscriber stations
- Google Patents
Circuit arrangement for telecommunication, in particular telephone systems with direct current supply of the subscriber stations
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Publication number
AT254285B
AT254285BAT96566AAT96566AAT254285BAT 254285 BAT254285 BAT 254285BAT 96566 AAT96566 AAT 96566AAT 96566 AAT96566 AAT 96566AAT 254285 BAT254285 BAT 254285B
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Application filed by Telefunken PatentfiledCriticalTelefunken Patent
Application grantedgrantedCritical
Publication of AT254285BpublicationCriticalpatent/AT254285B/en
H04M3/22—Arrangements for supervision, monitoring or testing
H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits
Landscapes
Engineering & Computer Science
(AREA)
Signal Processing
(AREA)
Interface Circuits In Exchanges
(AREA)
AT96566A1965-03-031966-02-02
Circuit arrangement for telecommunication, in particular telephone systems with direct current supply of the subscriber stations
AT254285B
(en)