Digitale Telefonanlage mit mehreren Sprechstellen

Digitale Telefonanlage mit mehreren Sprechstellen

The system includes several speech stations (1,5) which can be optionally interconnected. One of the stations functions as base station and is connected to the public telephone system. The other stations are mobile stations and connected to the base station via radio. A door answering and opening sy...

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Bibliographische Detailangaben
Hauptverfasser: TOMA, FRANK-ERIK, 61476 KRONBERG, DE, HAEFEN, HOLGER VON, 38300 WOLFENBUETTEL, DE, SANDHAUS, GEORG, 38304 WOLFENBUETTEL, DE, BUCHOLTZ, JOCHEN, 38104 BRAUNSCHWEIG, DE
Format: Patent
Sprache:ger
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TELEPHONIC COMMUNICATION
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Beschreibung
Zusammenfassung:The system includes several speech stations (1,5) which can be optionally interconnected. One of the stations functions as base station and is connected to the public telephone system. The other stations are mobile stations and connected to the base station via radio. A door answering and opening system which is connected to the base station via radio contains a mobile assembly (10). The telephone system can be switched into a door opening mode by a bell button (9), whereby the bell signal is fed to all speech stations. The station accepting the call triggers a door opening relay (13).