IT989272B - Circuito d interruzione della corrente di chiamata - Google Patents

Circuito d interruzione della corrente di chiamata

Info

Publication number
IT989272B
IT989272B IT25551/73A IT2555173A IT989272B IT 989272 B IT989272 B IT 989272B IT 25551/73 A IT25551/73 A IT 25551/73A IT 2555173 A IT2555173 A IT 2555173A IT 989272 B IT989272 B IT 989272B
Authority
IT
Italy
Prior art keywords
current interruption
interruption circuit
call current
call
circuit
Prior art date
Application number
IT25551/73A
Other languages
English (en)
Original Assignee
Gte Automatic Electric Lab 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 Gte Automatic Electric Lab Inc filed Critical Gte Automatic Electric Lab Inc
Application granted granted Critical
Publication of IT989272B publication Critical patent/IT989272B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/026—Arrangements for interrupting the ringing current

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
IT25551/73A 1972-06-20 1973-06-19 Circuito d interruzione della corrente di chiamata IT989272B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US26467372A 1972-06-20 1972-06-20

Publications (1)

Publication Number Publication Date
IT989272B true IT989272B (it) 1975-05-20

Family

ID=23007109

Family Applications (1)

Application Number Title Priority Date Filing Date
IT25551/73A IT989272B (it) 1972-06-20 1973-06-19 Circuito d interruzione della corrente di chiamata

Country Status (3)

Country Link
US (1) US3748401A (it)
CA (1) CA998788A (it)
IT (1) IT989272B (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064373A (en) * 1973-07-09 1977-12-20 International Standard Electric Corporation Line circuit for key telephone systems
US3941939A (en) * 1974-11-25 1976-03-02 International Telephone And Telegraph Corporation Electronic ring trip circuit
CA1240085A (en) * 1984-05-30 1988-08-02 Kenji Takato Calling signal transmission apparatus
JPH05176354A (ja) * 1991-12-20 1993-07-13 Fujitsu Ltd 加入者インタフェース回路
US8717726B2 (en) * 2011-05-27 2014-05-06 Mersen Usa Newburyport-Ma, Llc Static surge protection device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3341665A (en) * 1964-03-23 1967-09-12 Lorain Prod Corp Interrupter circuit for telephone systems

Also Published As

Publication number Publication date
US3748401A (en) 1973-07-24
CA998788A (en) 1976-10-19

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