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Publication date
Application filed by Siemens AgfiledCriticalSiemens Ag
Priority to AT22068ApriorityCriticalpatent/AT276501B/de
Priority to DE19681803888prioritypatent/DE1803888B2/de
Application grantedgrantedCritical
Publication of AT276501BpublicationCriticalpatent/AT276501B/de
H04Q1/00—Details of selecting apparatus or arrangements
H04Q1/18—Electrical details
H04Q1/30—Signalling arrangements; Manipulation of signalling currents
H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system
Landscapes
Engineering & Computer Science
(AREA)
Computer Networks & Wireless Communication
(AREA)
Relay Circuits
(AREA)
AT22068A1968-01-091968-01-09Schaltungsanordnung für Übertragungen in Fernmelde-insbesondere Fernsprechanlagen
AT276501B
(de)