IT1124700B - Circuito di rivelazione di stato di doppino telefonico,impulsi di numerazione e chiamata con rete capacitiva di derivazione - Google Patents

Circuito di rivelazione di stato di doppino telefonico,impulsi di numerazione e chiamata con rete capacitiva di derivazione

Info

Publication number
IT1124700B
IT1124700B IT26862/79A IT2686279A IT1124700B IT 1124700 B IT1124700 B IT 1124700B IT 26862/79 A IT26862/79 A IT 26862/79A IT 2686279 A IT2686279 A IT 2686279A IT 1124700 B IT1124700 B IT 1124700B
Authority
IT
Italy
Prior art keywords
call
detection circuit
state detection
differential network
capacitive differential
Prior art date
Application number
IT26862/79A
Other languages
English (en)
Other versions
IT7926862A0 (it
Inventor
Robert J Sabon
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 IT7926862A0 publication Critical patent/IT7926862A0/it
Application granted granted Critical
Publication of IT1124700B publication Critical patent/IT1124700B/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)
  • Devices For Supply Of Signal Current (AREA)
  • Telephonic Communication Services (AREA)
IT26862/79A 1978-11-01 1979-10-29 Circuito di rivelazione di stato di doppino telefonico,impulsi di numerazione e chiamata con rete capacitiva di derivazione IT1124700B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/956,547 US4191859A (en) 1978-11-01 1978-11-01 Loop, dial pulse and ring trip detection circuit with capacitive shunt network

Publications (2)

Publication Number Publication Date
IT7926862A0 IT7926862A0 (it) 1979-10-29
IT1124700B true IT1124700B (it) 1986-05-14

Family

ID=25498366

Family Applications (1)

Application Number Title Priority Date Filing Date
IT26862/79A IT1124700B (it) 1978-11-01 1979-10-29 Circuito di rivelazione di stato di doppino telefonico,impulsi di numerazione e chiamata con rete capacitiva di derivazione

Country Status (4)

Country Link
US (1) US4191859A (it)
BE (1) BE879054A (it)
CA (1) CA1138581A (it)
IT (1) IT1124700B (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4355209A (en) * 1980-12-29 1982-10-19 Gte Automatic Electric Labs Inc. Programmable line circuit
FR2519218A1 (fr) * 1981-12-24 1983-07-01 Telecommunications Sa Procede et dispositif d'alimentation d'une regie d'abonne
JP2564743Y2 (ja) * 1991-07-01 1998-03-09 株式会社村田製作所 電話回線用センサユニット

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4104488A (en) * 1977-05-19 1978-08-01 International Standard Electric Corporation Subscriber line circuit

Also Published As

Publication number Publication date
CA1138581A (en) 1982-12-28
US4191859A (en) 1980-03-04
IT7926862A0 (it) 1979-10-29
BE879054A (fr) 1980-01-16

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