IT8125812A0 - Circuito di linea programmabile. - Google Patents

Circuito di linea programmabile.

Info

Publication number
IT8125812A0
IT8125812A0 IT8125812A IT2581281A IT8125812A0 IT 8125812 A0 IT8125812 A0 IT 8125812A0 IT 8125812 A IT8125812 A IT 8125812A IT 2581281 A IT2581281 A IT 2581281A IT 8125812 A0 IT8125812 A0 IT 8125812A0
Authority
IT
Italy
Prior art keywords
line circuit
programmable line
programmable
circuit
line
Prior art date
Application number
IT8125812A
Other languages
English (en)
Other versions
IT1139950B (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 IT8125812A0 publication Critical patent/IT8125812A0/it
Application granted granted Critical
Publication of IT1139950B publication Critical patent/IT1139950B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/005—Interface circuits for subscriber lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
IT25812/81A 1980-12-29 1981-12-23 Ufficio tecnico internazionale brevetti ing.a.zini pza castello 1 milano IT1139950B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/220,669 US4355209A (en) 1980-12-29 1980-12-29 Programmable line circuit

Publications (2)

Publication Number Publication Date
IT8125812A0 true IT8125812A0 (it) 1981-12-23
IT1139950B IT1139950B (it) 1986-09-24

Family

ID=22824477

Family Applications (1)

Application Number Title Priority Date Filing Date
IT25812/81A IT1139950B (it) 1980-12-29 1981-12-23 Ufficio tecnico internazionale brevetti ing.a.zini pza castello 1 milano

Country Status (4)

Country Link
US (1) US4355209A (it)
BE (1) BE891626A (it)
CA (1) CA1173182A (it)
IT (1) IT1139950B (it)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3319560A1 (de) * 1983-05-30 1984-12-06 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zur ermittlung des schleifenzustandes einer teilnehmeranschlussleitung
US5103387A (en) * 1991-01-31 1992-04-07 Northern Telecom Limited High voltage converter
US6144722A (en) * 1997-06-20 2000-11-07 Advanced Micro Devices, Inc System and method for programmable telephone subscriber line test in ring mode
US6356741B1 (en) 1998-09-18 2002-03-12 Allegro Microsystems, Inc. Magnetic pole insensitive switch circuit
US6289100B1 (en) 1999-03-09 2001-09-11 Hubbell Incorporated Communications station having hall effect device for controlling hookswitch operations
US7016603B2 (en) * 2002-11-26 2006-03-21 Lab Partners Associates, Inc. Wireless communication module
US9664752B2 (en) 2013-05-24 2017-05-30 Allegro Microsystems, Llc Magnetic field sensor for detecting a magnetic field in any direction above thresholds
US9733106B2 (en) 2013-05-24 2017-08-15 Allegro Microsystems, Llc Magnetic field sensor to detect a magnitude of a magnetic field in any direction

Family Cites Families (3)

* 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
US4191859A (en) * 1978-11-01 1980-03-04 Gte Automatic Electric Laboratories Incorporated Loop, dial pulse and ring trip detection circuit with capacitive shunt network
US4282407A (en) * 1979-10-15 1981-08-04 Bell Telephone Laboratories, Incorporated Telephone loop resistance detector

Also Published As

Publication number Publication date
US4355209A (en) 1982-10-19
IT1139950B (it) 1986-09-24
BE891626A (fr) 1982-04-16
CA1173182A (en) 1984-08-21

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