FR872187A - Improvements to electrical signaling systems - Google Patents

Improvements to electrical signaling systems

Info

Publication number
FR872187A
FR872187A FR872187DA FR872187A FR 872187 A FR872187 A FR 872187A FR 872187D A FR872187D A FR 872187DA FR 872187 A FR872187 A FR 872187A
Authority
FR
France
Prior art keywords
signaling systems
electrical signaling
electrical
systems
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
French (fr)
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
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 Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Application granted granted Critical
Publication of FR872187A publication Critical patent/FR872187A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H04M15/08—Metering calls to called party, i.e. B-party charged for the communication

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Telephonic Communication Services (AREA)
FR872187D 1939-03-02 1940-03-02 Improvements to electrical signaling systems Expired FR872187A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB237887X 1939-03-02

Publications (1)

Publication Number Publication Date
FR872187A true FR872187A (en) 1942-06-01

Family

ID=41112512

Family Applications (1)

Application Number Title Priority Date Filing Date
FR872187D Expired FR872187A (en) 1939-03-02 1940-03-02 Improvements to electrical signaling systems

Country Status (6)

Country Link
US (1) US2286445A (en)
BE (1) BE438173A (en)
CH (1) CH237887A (en)
DE (1) DE830531C (en)
FR (1) FR872187A (en)
GB (1) GB525902A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE465859A (en) * 1945-06-13
BE473455A (en) * 1946-07-25
US2532750A (en) * 1946-08-03 1950-12-05 Automatic Telephone & Elect Calling line identifier having display device at operator's position
US2570971A (en) * 1947-11-14 1951-10-09 Bell Telephone Labor Inc Vertical line number translator

Also Published As

Publication number Publication date
US2286445A (en) 1942-06-16
GB525902A (en) 1940-09-06
DE830531C (en) 1952-02-04
BE438173A (en)
CH237887A (en) 1945-05-31

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