IT958763B - Sistema di comunicazione con circuito multifunzionale di scan sione conteggio particolarmente per centralini telefonici privati - Google Patents

Sistema di comunicazione con circuito multifunzionale di scan sione conteggio particolarmente per centralini telefonici privati

Info

Publication number
IT958763B
IT958763B IT68230/72A IT6823072A IT958763B IT 958763 B IT958763 B IT 958763B IT 68230/72 A IT68230/72 A IT 68230/72A IT 6823072 A IT6823072 A IT 6823072A IT 958763 B IT958763 B IT 958763B
Authority
IT
Italy
Prior art keywords
communication system
scanning circuit
private telephone
circuit counting
telephone switchboards
Prior art date
Application number
IT68230/72A
Other languages
English (en)
Original Assignee
Western Electric Co
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 Western Electric Co filed Critical Western Electric Co
Application granted granted Critical
Publication of IT958763B publication Critical patent/IT958763B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Telephonic Communication Services (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
IT68230/72A 1971-04-26 1972-04-19 Sistema di comunicazione con circuito multifunzionale di scan sione conteggio particolarmente per centralini telefonici privati IT958763B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13715071A 1971-04-26 1971-04-26

Publications (1)

Publication Number Publication Date
IT958763B true IT958763B (it) 1973-10-30

Family

ID=22476026

Family Applications (1)

Application Number Title Priority Date Filing Date
IT68230/72A IT958763B (it) 1971-04-26 1972-04-19 Sistema di comunicazione con circuito multifunzionale di scan sione conteggio particolarmente per centralini telefonici privati

Country Status (13)

Country Link
US (1) US3723661A (it)
JP (1) JPS5317012B1 (it)
AU (1) AU445609B2 (it)
BE (1) BE781927A (it)
BR (1) BR7202270D0 (it)
CA (1) CA963134A (it)
DE (1) DE2220187A1 (it)
ES (1) ES401777A1 (it)
FR (1) FR2136346A5 (it)
GB (1) GB1353124A (it)
IT (1) IT958763B (it)
NL (1) NL7205327A (it)
SE (1) SE386561B (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4140880A (en) * 1978-03-22 1979-02-20 Tele/Resources, Inc. Hold tone scanner

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL133821C (it) * 1964-07-31
GB1057218A (en) * 1965-10-01 1967-02-01 Standard Telephones Cables Ltd Improvements in or relating to telephone exchanges

Also Published As

Publication number Publication date
SE386561B (sv) 1976-08-09
DE2220187A1 (de) 1972-11-09
ES401777A1 (es) 1975-11-01
CA963134A (en) 1975-02-18
JPS5317012B1 (it) 1978-06-05
BE781927A (fr) 1972-07-31
GB1353124A (en) 1974-05-15
US3723661A (en) 1973-03-27
BR7202270D0 (pt) 1973-05-10
AU445609B2 (en) 1974-02-08
JPS4745109A (it) 1972-12-23
FR2136346A5 (it) 1972-12-22
NL7205327A (it) 1972-10-30
AU4091572A (en) 1973-10-11

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