Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bell Telephone MfgfiledCriticalBell Telephone Mfg
Publication of CH225462ApublicationCriticalpatent/CH225462A/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
H04Q1/442—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
H04Q1/4423—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04Q—SELECTING
H04Q3/00—Selecting arrangements
H04Q3/0016—Arrangements providing connection between exchanges
Landscapes
Engineering & Computer Science
(AREA)
Computer Networks & Wireless Communication
(AREA)
Sub-Exchange Stations And Push- Button Telephones
(AREA)
Schaltungsanordnung in Fernmelde-, insbesondere Fernsprechanlagen mit Waehlerbetrieb, bei der Einrichtungen nach entsprechender Kennzeichnung alle zum Verbindungsaufbau erforderlichen Stromstossreihen selbsttaetig aussenden
Schaltungsanordnung zum Empfang von akustischen Zeichen aus einer mehreren Teilnehmern gemeinsamen Geberstelle ueber das Leitungsnetz einer Fernsprechanlage