CH268998A - Fernmeldeanlage für den Verkehr über grosse Entfernungen. - Google Patents

Fernmeldeanlage für den Verkehr über grosse Entfernungen.

Info

Publication number
CH268998A
CH268998A CH268998DA CH268998A CH 268998 A CH268998 A CH 268998A CH 268998D A CH268998D A CH 268998DA CH 268998 A CH268998 A CH 268998A
Authority
CH
Switzerland
Prior art keywords
telecommunication system
over long
long distances
traffic over
traffic
Prior art date
Application number
Other languages
German (de)
English (en)
Inventor
Ag Standard Telephon Und Radio
Original Assignee
Standard Telephon & Radio Ag
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 Standard Telephon & Radio Ag filed Critical Standard Telephon & Radio Ag
Publication of CH268998A publication Critical patent/CH268998A/de

Links

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
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
    • H04Q1/4535—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted with an additional signal transmitted for voice protection

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephonic Communication Services (AREA)
CH268998D 1939-08-16 1947-03-22 Fernmeldeanlage für den Verkehr über grosse Entfernungen. CH268998A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB268998X 1939-08-16

Publications (1)

Publication Number Publication Date
CH268998A true CH268998A (de) 1950-06-15

Family

ID=10250964

Family Applications (1)

Application Number Title Priority Date Filing Date
CH268998D CH268998A (de) 1939-08-16 1947-03-22 Fernmeldeanlage für den Verkehr über grosse Entfernungen.

Country Status (5)

Country Link
US (1) US2593512A (en, 2012)
BE (1) BE476047A (en, 2012)
CH (1) CH268998A (en, 2012)
FR (1) FR947898A (en, 2012)
GB (1) GB534023A (en, 2012)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1575272A (en) * 1923-10-31 1926-03-02 Western Electric Co Telephone system
US2188461A (en) * 1935-06-11 1940-01-30 Ass Telephone & Telegraph Co Mechanical impulse repeater
GB489545A (en) * 1937-01-25 1938-07-25 Standard Telephones Cables Ltd Improvements in or relating to electrical communication systems

Also Published As

Publication number Publication date
US2593512A (en) 1952-04-22
FR947898A (fr) 1949-07-15
BE476047A (en, 2012)
GB534023A (en) 1941-02-26

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