TELEPHONE CIRCUIT SWITCHING DEVICE

PURPOSE:To give a signal from an exchange to a device connecting to a 2nd voice signal terminal by fixing an 8-circuit 6-contact changeover switch at a position when the production of a voice signal is confirmed at a 1st voice signal terminal, and switching and connecting a 2-circuit 2-contact chang...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	IWAI SHOZO
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TELEPHONIC COMMUNICATION
Online-Zugang:	Volltext bestellen
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