FR940995A - Systèmes de télécommunication par bureaux centraux - Google Patents

Systèmes de télécommunication par bureaux centraux

Info

Publication number
FR940995A
FR940995A FR940995DA FR940995A FR 940995 A FR940995 A FR 940995A FR 940995D A FR940995D A FR 940995DA FR 940995 A FR940995 A FR 940995A
Authority
FR
France
Prior art keywords
central office
telecommunication systems
office telecommunication
systems
central
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
Esmond Philip Goodwin Wright
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 GB6390/40A external-priority patent/GB540250A/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR940995A publication Critical patent/FR940995A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
    • H04M17/02—Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/04—Recording calls, or communications in printed, perforated or other permanent form
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
FR940995D 1940-04-09 1947-01-08 Systèmes de télécommunication par bureaux centraux Expired FR940995A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6390/40A GB540250A (en) 1940-04-09 1940-04-09 Improvements in or relating to telecommunication exchange systems

Publications (1)

Publication Number Publication Date
FR940995A true FR940995A (fr) 1948-12-29

Family

ID=9813637

Family Applications (1)

Application Number Title Priority Date Filing Date
FR940995D Expired FR940995A (fr) 1940-04-09 1947-01-08 Systèmes de télécommunication par bureaux centraux

Country Status (1)

Country Link
FR (1) FR940995A (fr)

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