Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filedfiledCritical
Priority to JP10524481ApriorityCriticalpatent/JPS586655A/ja
Publication of JPS586655ApublicationCriticalpatent/JPS586655A/ja
Publication of JPH0342535B2publicationCriticalpatent/JPH0342535B2/ja
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
H04M9/003—Transmission of control signals from or to the key telephone set; signalling equipment at key telephone set, e.g. keyboard or display equipment
Landscapes
Engineering & Computer Science
(AREA)
Signal Processing
(AREA)
Interconnected Communication Systems, Intercoms, And Interphones
(AREA)
Relaisfotohalbleiter, relaisfotohalbleitervorrichtung, steuergerät mit relaisfotohalbleitervorrichtung, leistungsversorgungsvorrichtung mit fotohalbleitervorrichtung und schaltgerät mit relaisfotohalbleitervorrichtung