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Publication of DE291879CpublicationCriticalpatent/DE291879C/de
H04M19/00—Current supply arrangements for telephone systems
H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04Q—SELECTING
H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
H04Q5/02—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with direct connection for all subscribers, i.e. party-line systems
H04Q5/14—Signalling by pulses
H04Q5/16—Signalling by pulses by predetermined number of pulses
Wähleinrichtung mit Schrittschaltwerken für an einer gemeinsamen Gesellschaftsleitung liegende und von einer gemeinsamen Zentrale gesteuerte Selbstwähler-Fernsprechstellen.