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Filing date
Publication date
Application filed by Autophon AgfiledCriticalAutophon Ag
Publication of CH314514ApublicationCriticalpatent/CH314514A/de
H04M9/00—Arrangements for interconnection not involving centralised switching
H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
H04M9/005—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line
Landscapes
Engineering & Computer Science
(AREA)
Signal Processing
(AREA)
CH314514D1953-05-281953-05-28Telephonteilnehmeranlage mit mehreren Stationen und einer Endausrüstung
CH314514A
(de)