FR1486684A - Improvements to automatic telephone systems - Google Patents

Improvements to automatic telephone systems

Info

Publication number
FR1486684A
FR1486684A FR69327A FR69327A FR1486684A FR 1486684 A FR1486684 A FR 1486684A FR 69327 A FR69327 A FR 69327A FR 69327 A FR69327 A FR 69327A FR 1486684 A FR1486684 A FR 1486684A
Authority
FR
France
Prior art keywords
telephone systems
automatic telephone
automatic
systems
telephone
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
FR69327A
Other languages
French (fr)
Inventor
Nikolaus Lewen
Klaus Nigge
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
Priority claimed from DEST24153A external-priority patent/DE1236600B/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to FR69327A priority Critical patent/FR1486684A/en
Application granted granted Critical
Publication of FR1486684A publication Critical patent/FR1486684A/en
Expired legal-status Critical Current

Links

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/20—Testing circuits or apparatus; Circuits or apparatus for detecting, indicating, or signalling faults or troubles
    • H04Q1/22—Automatic arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0008—Selecting arrangements using relay selectors in the switching stages
    • H04Q3/0012—Selecting arrangements using relay selectors in the switching stages in which the relays are arranged in a matrix configuration

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
FR69327A 1965-07-17 1966-07-13 Improvements to automatic telephone systems Expired FR1486684A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR69327A FR1486684A (en) 1965-07-17 1966-07-13 Improvements to automatic telephone systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEST24153A DE1236600B (en) 1965-07-17 1965-07-17 Method and circuit arrangement for monitoring the establishment of a connection in a switching arrangement centrally controlled by markers
FR69327A FR1486684A (en) 1965-07-17 1966-07-13 Improvements to automatic telephone systems

Publications (1)

Publication Number Publication Date
FR1486684A true FR1486684A (en) 1967-06-30

Family

ID=25994351

Family Applications (1)

Application Number Title Priority Date Filing Date
FR69327A Expired FR1486684A (en) 1965-07-17 1966-07-13 Improvements to automatic telephone systems

Country Status (1)

Country Link
FR (1) FR1486684A (en)

Similar Documents

Publication Publication Date Title
FR1506787A (en) Improvements to automatic telephone systems
FR1435022A (en) Improvements to telecommunications systems
FR1466933A (en) Improvements to automatic telephone systems
FR1391383A (en) Improvements to automatic telephone systems
FR94787E (en) Improvements to telephone systems.
FR1508149A (en) Improvements to automatic telephone systems
FR1401673A (en) Improvements to automatic telephone systems
FR1504668A (en) Improvements to automatic telephone systems
FR91464E (en) Improvements to automatic telephone systems
FR90307E (en) Improvements to automatic telephone systems
FR1487217A (en) Improvements to automatic telephone systems
FR1486684A (en) Improvements to automatic telephone systems
FR1485872A (en) Improvements to automatic telephone systems
FR1484931A (en) Improvements to automatic telephone systems
FR1496441A (en) Improvements to telephone systems
FR90671E (en) Improvements to radio-localization systems
FR1505907A (en) Refinements to winding systems
FR1486683A (en) Improvements to automatic telephone systems
FR1466932A (en) Improvements to automatic telephone systems
FR1464258A (en) Improvements to telephone systems
FR1496017A (en) Improvements to telephone systems
FR1501079A (en) Improvements to telephone systems
FR1487216A (en) Improvements to telephone systems
FR91371E (en) Improvements to telephone systems
FR1487215A (en) Improvements to telephone systems