CH289851A - Repeater signaling device for two-wire telephone system. - Google Patents

Repeater signaling device for two-wire telephone system.

Info

Publication number: CH289851A
Authority: CH; Switzerland
Prior art keywords: telephone system; signaling device; wire telephone; repeater; repeater signaling
Prior art date: 1950-03-28

Application number

Other languages

French (fr)

Inventor

M Lebedinsky Myron

Original Assignee

Telecommunications Sa

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.)

1950-03-28

Filing date

1951-01-12

Publication date

1953-03-31

1951-01-12 Application filed by Telecommunications Sa filed Critical Telecommunications Sa

1953-03-31 Publication of CH289851A publication Critical patent/CH289851A/en

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- 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

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

CH289851D 1950-03-28 1951-01-12 Repeater signaling device for two-wire telephone system. CH289851A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR1015224T		1950-03-28

Publications (1)

Publication Number	Publication Date
CH289851A true CH289851A (en)	1953-03-31

Family

ID=9572870

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH289851D CH289851A (en)	1950-03-28	1951-01-12	Repeater signaling device for two-wire telephone system.

Country Status (3)

Country	Link
CH (1)	CH289851A (en)
FR (1)	FR1015224A (en)
GB (1)	GB685350A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE516817A (en) *	1952-01-11

1950
- 1950-03-28 FR FR1015224D patent/FR1015224A/en not_active Expired
1951
- 1951-01-12 CH CH289851D patent/CH289851A/en unknown
- 1951-02-06 GB GB2935/51A patent/GB685350A/en not_active Expired

Also Published As

Publication number	Publication date
GB685350A (en)	1952-12-31
FR1015224A (en)	1952-08-29

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