FR1058881A - Système de signalisation par courant alternatif - Google Patents

Système de signalisation par courant alternatif

Info

Publication number
FR1058881A
FR1058881A FR1058881DA FR1058881A FR 1058881 A FR1058881 A FR 1058881A FR 1058881D A FR1058881D A FR 1058881DA FR 1058881 A FR1058881 A FR 1058881A
Authority
FR
France
Prior art keywords
signaling system
signaling
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
English (en)
Inventor
Henry Hewman Wrok
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR1058881A publication Critical patent/FR1058881A/fr
Expired legal-status Critical Current

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
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
    • H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
FR1058881D 1951-03-03 1952-03-03 Système de signalisation par courant alternatif Expired FR1058881A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IE312453X 1951-03-03

Publications (1)

Publication Number Publication Date
FR1058881A true FR1058881A (fr) 1954-03-19

Family

ID=11042216

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1058881D Expired FR1058881A (fr) 1951-03-03 1952-03-03 Système de signalisation par courant alternatif

Country Status (7)

Country Link
US (1) US2686228A (fr)
BE (1) BE509657A (fr)
CH (1) CH312453A (fr)
DE (1) DE965823C (fr)
FR (1) FR1058881A (fr)
GB (1) GB689379A (fr)
NL (1) NL167851C (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB956356A (en) * 1960-07-21 1964-04-22 Standard Telephones Cables Ltd Improvements in or relating to signalling methods between subscriber's sets and exchage

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1550658A (en) * 1920-12-31 1925-08-25 American Telephone & Telegraph Ringing circuits for multiplex signaling
US1864082A (en) * 1931-09-25 1932-06-21 Bell Telephone Labor Inc Telephone exchange system
US2041114A (en) * 1934-11-14 1936-05-19 Louis F B Carini Electrical discharge tube circuits
DE658606C (de) * 1935-05-01 1938-04-13 Siemens & Halske Akt Ges Schaltungsanlage fuer Fernsprechanlagen mit Waehlerbetrieb
US2191913A (en) * 1939-03-03 1940-02-27 Bell Telephone Labor Inc Telephone system
US2303654A (en) * 1940-07-12 1942-12-01 Honeywell Regulator Co Control apparatus
FR960967A (fr) * 1945-02-06 1950-04-28
NL139712B (nl) * 1947-02-20 Shell Int Research Drijvende opslaginrichting van het verdringingstype, in het bijzonder voor het opslaan van aardolie.

Also Published As

Publication number Publication date
BE509657A (fr)
DE965823C (de) 1957-06-19
GB689379A (en) 1953-03-25
NL167851C (nl)
CH312453A (de) 1955-12-31
US2686228A (en) 1954-08-10

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