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Application filed by Telefonbau & Normalzeit GmbhfiledCriticalTelefonbau & Normalzeit Gmbh
Application grantedgrantedCritical
Publication of AT278912BpublicationCriticalpatent/AT278912B/de
H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
H04Q3/625—Arrangements in the private branch exchange
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Physics & Mathematics
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Astronomy & Astrophysics
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General Physics & Mathematics
(AREA)
Engineering & Computer Science
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Computer Networks & Wireless Communication
(AREA)
Exchange Systems With Centralized Control
(AREA)
AT179866A1965-03-031966-02-25Schaltungsanordnung zur Steuerung einer Durchschalteinrichtung für Fernmelde-, insbesondere Fernsprechanlagen
AT278912B
(de)