CONTROL SYSTEM FOR TRUNK LINE

PURPOSE:To obtain a function corresponding to a hooking operation by combining the hooking operation of a telephone set with the storage information of the polarity storage circuit of a trunk line to convert it into instruction information. CONSTITUTION:When an opposite side called through a trunk l...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	YUI TAKAHIRO, KOSHO TOSHIAKI, KATOU TOSHII, SAKURAI YOSHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY SELECTING TELEPHONIC COMMUNICATION
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