IE22994L - Voice frequency signalling - Google Patents

Voice frequency signalling

Info

Publication number
IE22994L
IE22994L IE19357A IE19357A IE22994L IE 22994 L IE22994 L IE 22994L IE 19357 A IE19357 A IE 19357A IE 19357 A IE19357 A IE 19357A IE 22994 L IE22994 L IE 22994L
Authority
IE
Ireland
Prior art keywords
voice frequency
frequency signalling
signalling
voice
frequency
Prior art date
Application number
IE19357A
Original Assignee
Siemens Edison Swan Ltd
Formerly Siemens Brothers & Co
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 Siemens Edison Swan Ltd, Formerly Siemens Brothers & Co filed Critical Siemens Edison Swan Ltd
Priority to IE19357A priority Critical patent/IE22994L/en
Publication of IE22994L publication Critical patent/IE22994L/en

Links

IE19357A 1957-04-12 1957-04-12 Voice frequency signalling IE22994L (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IE19357A IE22994L (en) 1957-04-12 1957-04-12 Voice frequency signalling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IE19357A IE22994L (en) 1957-04-12 1957-04-12 Voice frequency signalling

Publications (1)

Publication Number Publication Date
IE22994L true IE22994L (en) 1957-10-19

Family

ID=11008448

Family Applications (1)

Application Number Title Priority Date Filing Date
IE19357A IE22994L (en) 1957-04-12 1957-04-12 Voice frequency signalling

Country Status (1)

Country Link
IE (1) IE22994L (en)

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