IT1139950B - Ufficio tecnico internazionale brevetti ing.a.zini pza castello 1 milano - Google Patents

Ufficio tecnico internazionale brevetti ing.a.zini pza castello 1 milano

Info

Publication number
IT1139950B
IT1139950B IT25812/81A IT2581281A IT1139950B IT 1139950 B IT1139950 B IT 1139950B IT 25812/81 A IT25812/81 A IT 25812/81A IT 2581281 A IT2581281 A IT 2581281A IT 1139950 B IT1139950 B IT 1139950B
Authority
IT
Italy
Prior art keywords
zini
castello
pza
milan
international technical
Prior art date
Application number
IT25812/81A
Other languages
English (en)
Other versions
IT8125812A0 (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 IT8125812A0 (it) 1981-12-23
IT1139950B true 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
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
EP2997390B1 (en) 2013-05-24 2017-09-06 Allegro Microsystems, LLC Magnetic field sensor for detecting a magnetic field in any direction above thresholds

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
CA1173182A (en) 1984-08-21
IT8125812A0 (it) 1981-12-23
US4355209A (en) 1982-10-19
BE891626A (fr) 1982-04-16

Similar Documents

Publication Publication Date Title
IT1139281B (it) Macchina etichettatrice
AT381056B (de) Schweissautomat
IT1139950B (it) Ufficio tecnico internazionale brevetti ing.a.zini pza castello 1 milano
FR2500838B1 (fr) Derives de neplanocine a
FR2487261B1 (fr) Porte-mine automatique
GB2086202B (en) Implement supporting arrangement
GB2023027B (en) Work support
DE3260483D1 (de) Deblistering machine
BR8100227A (pt) Maquineta rotativa
IT1113404B (it) Internazionale brevetti s.r.l.via brentano 2 milano
DK400582A (da) Serviceautomat
BE892450A (fr) Promoteur de croissance
GB2012642B (en) Multispot gridwelding machine
DK59081A (da) Formmaskine
IT1168487B (it) Macchina sgambafunghi
BR8101048A (pt) Maquina de reproducao
AT381614B (de) Speisequarkautomat
ATA359381A (de) Verkaufsautomat
BR6101601U (pt) Secretaria eletronica
ATA154181A (de) Anrufbeantworter
BR8103065A (pt) Maquina aperfeicoada
SE8204137L (sv) Skivslattermaskin
DK438881A (da) Loefteapparat
BR8005166A (pt) Secretaria eletronica
ES252654Y (es) Un soporte perfeccionado