CH219019A - Long-distance telecommunication installation at central offices. - Google Patents

Long-distance telecommunication installation at central offices.

Info

Publication number
CH219019A
CH219019A CH219019DA CH219019A CH 219019 A CH219019 A CH 219019A CH 219019D A CH219019D A CH 219019DA CH 219019 A CH219019 A CH 219019A
Authority
CH
Switzerland
Prior art keywords
long
central offices
telecommunication installation
distance telecommunication
distance
Prior art date
Application number
Other languages
French (fr)
Inventor
Bell Telephone Manufac Anonyme
Original Assignee
Bell Telephone Mfg
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 Bell Telephone Mfg filed Critical Bell Telephone Mfg
Publication of CH219019A publication Critical patent/CH219019A/en

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
    • H04M15/04—Recording calls, or communications in printed, perforated or other permanent form

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Exchange Systems With Centralized Control (AREA)
CH219019D 1939-04-22 1940-04-29 Long-distance telecommunication installation at central offices. CH219019A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB219019X 1939-04-22

Publications (1)

Publication Number Publication Date
CH219019A true CH219019A (en) 1942-01-15

Family

ID=10170718

Family Applications (1)

Application Number Title Priority Date Filing Date
CH219019D CH219019A (en) 1939-04-22 1940-04-29 Long-distance telecommunication installation at central offices.

Country Status (4)

Country Link
BE (1) BE438722A (en)
CH (1) CH219019A (en)
FR (1) FR864742A (en)
GB (1) GB528193A (en)

Also Published As

Publication number Publication date
FR864742A (en) 1941-05-03
GB528193A (en) 1940-10-24
BE438722A (en)

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