IT7831205A0 - Circuito di rivelazione di doppino, di impulsi del disco combinatore e d'attivazione di suoneria. - Google Patents

Circuito di rivelazione di doppino, di impulsi del disco combinatore e d'attivazione di suoneria.

Info

Publication number
IT7831205A0
IT7831205A0 IT7831205A IT3120578A IT7831205A0 IT 7831205 A0 IT7831205 A0 IT 7831205A0 IT 7831205 A IT7831205 A IT 7831205A IT 3120578 A IT3120578 A IT 3120578A IT 7831205 A0 IT7831205 A0 IT 7831205A0
Authority
IT
Italy
Prior art keywords
circuit
dial pulse
pair detection
detection circuit
ringer
Prior art date
Application number
IT7831205A
Other languages
English (en)
Other versions
IT1101596B (it
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
Publication of IT7831205A0 publication Critical patent/IT7831205A0/it
Application granted granted Critical
Publication of IT1101596B publication Critical patent/IT1101596B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits
    • 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)
  • Telephonic Communication Services (AREA)
  • Devices For Supply Of Signal Current (AREA)
IT31205/78A 1977-12-29 1978-12-22 Circuito di rivelazione di doppino, di impulsi del disco combinatore e d'attivazione di suoneria IT1101596B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/865,761 US4166928A (en) 1977-12-29 1977-12-29 Loop, dial pulse and ring trip detection circuit

Publications (2)

Publication Number Publication Date
IT7831205A0 true IT7831205A0 (it) 1978-12-22
IT1101596B IT1101596B (it) 1985-10-07

Family

ID=25346171

Family Applications (1)

Application Number Title Priority Date Filing Date
IT31205/78A IT1101596B (it) 1977-12-29 1978-12-22 Circuito di rivelazione di doppino, di impulsi del disco combinatore e d'attivazione di suoneria

Country Status (4)

Country Link
US (1) US4166928A (it)
BE (1) BE870968A (it)
CA (1) CA1116329A (it)
IT (1) IT1101596B (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4326103A (en) * 1980-06-02 1982-04-20 Gte Automatic Electric Labs Inc. Coin telephone monitor circuit
US6289100B1 (en) 1999-03-09 2001-09-11 Hubbell Incorporated Communications station having hall effect device for controlling hookswitch operations

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4099032A (en) * 1977-03-25 1978-07-04 Wescom, Inc. Loop current detector
US4104488A (en) * 1977-05-19 1978-08-01 International Standard Electric Corporation Subscriber line circuit

Also Published As

Publication number Publication date
CA1116329A (en) 1982-01-12
IT1101596B (it) 1985-10-07
BE870968A (fr) 1979-02-01
US4166928A (en) 1979-09-04

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