CH313062A - Einrichtung für das Weiterschalten von Anrufsignalen von einem Telephonapparat auf einen andern - Google Patents

Einrichtung für das Weiterschalten von Anrufsignalen von einem Telephonapparat auf einen andern

Info

Publication number: CH313062A
Authority: CH; Switzerland
Prior art keywords: another; telephone set; call signals; switching call; switching
Prior art date: 1952-05-05

Application number

Other languages

English (en)

Inventor

Valdemar Alexandersson Harald

Original Assignee

Ericsson Telefon Ab L M

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.)

1952-05-05

Filing date

1953-05-01

Publication date

1956-03-15

1953-05-01 Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M

1956-03-15 Publication of CH313062A publication Critical patent/CH313062A/de

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/08—Indicating faults in circuits or apparatus
- H04M3/12—Marking faulty circuits "busy"; Enabling equipment to disengage itself from faulty circuits ; Using redundant circuits; Response of a circuit, apparatus or system to an error
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/71—Substation extension arrangements
- H04M1/715—Substation extension arrangements using two or more extensions per line
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- 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
- H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)

CH313062D 1952-05-05 1953-05-01 Einrichtung für das Weiterschalten von Anrufsignalen von einem Telephonapparat auf einen andern CH313062A (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
SE313062X		1952-05-05

Publications (1)

Publication Number	Publication Date
CH313062A true CH313062A (de)	1956-03-15

Family

ID=20307662

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH313062D CH313062A (de)	1952-05-05	1953-05-01	Einrichtung für das Weiterschalten von Anrufsignalen von einem Telephonapparat auf einen andern

Country Status (4)

Country	Link
BE (1)	BE519670A (de)
CH (1)	CH313062A (de)
FR (1)	FR1076687A (de)
NL (2)	NL178068B (de)

0
- NL NL83319D patent/NL83319C/xx active
- NL NLAANVRAGE7904096,B patent/NL178068B/xx unknown
- BE BE519670D patent/BE519670A/xx unknown
1953
- 1953-05-01 CH CH313062D patent/CH313062A/de unknown
- 1953-05-05 FR FR1076687D patent/FR1076687A/fr not_active Expired

Also Published As

Publication number	Publication date
FR1076687A (fr)	1954-10-28
NL178068B (nl)
NL83319C (de)
BE519670A (de)

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