FR943692A - Telecommunications systems - Google Patents

Telecommunications systems

Info

Publication number
FR943692A
FR943692A FR943692DA FR943692A FR 943692 A FR943692 A FR 943692A FR 943692D A FR943692D A FR 943692DA FR 943692 A FR943692 A FR 943692A
Authority
FR
France
Prior art keywords
telecommunications systems
telecommunications
systems
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
French (fr)
Inventor
William John Reynolds
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 FR943692A publication Critical patent/FR943692A/en
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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
FR943692D 1946-01-16 1946-12-13 Telecommunications systems Expired FR943692A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1496/46A GB606596A (en) 1946-01-16 1946-01-16 Improvements in or relating to telecommunication exchange systems

Publications (1)

Publication Number Publication Date
FR943692A true FR943692A (en) 1949-03-15

Family

ID=27799321

Family Applications (1)

Application Number Title Priority Date Filing Date
FR943692D Expired FR943692A (en) 1946-01-16 1946-12-13 Telecommunications systems

Country Status (4)

Country Link
BE (1) BE476370A (en)
CH (1) CH269352A (en)
FR (1) FR943692A (en)
GB (1) GB606596A (en)

Also Published As

Publication number Publication date
GB606596A (en) 1948-08-17
BE476370A (en)
CH269352A (en) 1950-06-30

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