ES401777A1 - Perfeccionamientos en sistemas de comunicacion telefonica en circuito explorador-contador multifuncional. - Google Patents

Perfeccionamientos en sistemas de comunicacion telefonica en circuito explorador-contador multifuncional.

Info

Publication number
ES401777A1
ES401777A1 ES401777A ES401777A ES401777A1 ES 401777 A1 ES401777 A1 ES 401777A1 ES 401777 A ES401777 A ES 401777A ES 401777 A ES401777 A ES 401777A ES 401777 A1 ES401777 A1 ES 401777A1
Authority
ES
Spain
Prior art keywords
counter circuit
scanning stations
calling station
call
switching
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
ES401777A
Other languages
English (en)
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Inc filed Critical Western Electric Co Inc
Publication of ES401777A1 publication Critical patent/ES401777A1/es
Expired legal-status Critical Current

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)
  • Interface Circuits In Exchanges (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Telephonic Communication Services (AREA)
ES401777A 1971-04-26 1972-04-15 Perfeccionamientos en sistemas de comunicacion telefonica en circuito explorador-contador multifuncional. Expired ES401777A1 (es)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ES401777A1 true ES401777A1 (es) 1975-11-01

Family

ID=22476026

Family Applications (1)

Application Number Title Priority Date Filing Date
ES401777A Expired ES401777A1 (es) 1971-04-26 1972-04-15 Perfeccionamientos en sistemas de comunicacion telefonica en circuito explorador-contador multifuncional.

Country Status (13)

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

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 (es) * 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
FR2136346A5 (es) 1972-12-22
AU445609B2 (en) 1974-02-08
NL7205327A (es) 1972-10-30
US3723661A (en) 1973-03-27
JPS4745109A (es) 1972-12-23
SE386561B (sv) 1976-08-09
CA963134A (en) 1975-02-18
IT958763B (it) 1973-10-30
GB1353124A (en) 1974-05-15
BE781927A (fr) 1972-07-31
JPS5317012B1 (es) 1978-06-05
DE2220187A1 (de) 1972-11-09
AU4091572A (en) 1973-10-11
BR7202270D0 (pt) 1973-05-10

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