IT1233229B - Procedimento e dispositivi di prova per impianti telefonici - Google Patents

Procedimento e dispositivi di prova per impianti telefonici

Info

Publication number
IT1233229B
IT1233229B IT8967620A IT6762089A IT1233229B IT 1233229 B IT1233229 B IT 1233229B IT 8967620 A IT8967620 A IT 8967620A IT 6762089 A IT6762089 A IT 6762089A IT 1233229 B IT1233229 B IT 1233229B
Authority
IT
Italy
Prior art keywords
procedure
test devices
telephone systems
telephone
systems
Prior art date
Application number
IT8967620A
Other languages
English (en)
Other versions
IT8967620A0 (it
Inventor
Bevers Morey Scot
Amaro Michael Gerald
Musson Robert Alan
Original Assignee
Teradyne 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 Teradyne Inc filed Critical Teradyne Inc
Publication of IT8967620A0 publication Critical patent/IT8967620A0/it
Application granted granted Critical
Publication of IT1233229B publication Critical patent/IT1233229B/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
    • H04M3/26—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
    • H04M3/301—Circuit arrangements at the subscriber's side of the line
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/72—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region
    • H03K17/725—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region for ac voltages or currents
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/24—Arrangements for testing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2203/00—Aspects of automatic or semi-automatic exchanges
    • H04M2203/05—Aspects of automatic or semi-automatic exchanges related to OAM&P
    • H04M2203/058—Aspects of automatic or semi-automatic exchanges related to OAM&P signature devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
IT8967620A 1988-07-22 1989-07-21 Procedimento e dispositivi di prova per impianti telefonici IT1233229B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/223,435 US4852145A (en) 1988-07-22 1988-07-22 Telephone subscriber loop test system

Publications (2)

Publication Number Publication Date
IT8967620A0 IT8967620A0 (it) 1989-07-21
IT1233229B true IT1233229B (it) 1992-03-20

Family

ID=22836482

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8967620A IT1233229B (it) 1988-07-22 1989-07-21 Procedimento e dispositivi di prova per impianti telefonici

Country Status (9)

Country Link
US (1) US4852145A (it)
JP (1) JPH0273755A (it)
BE (1) BE1002711A3 (it)
CA (1) CA1307862C (it)
DE (1) DE3923981A1 (it)
FR (1) FR2635244B1 (it)
GB (2) GB2221124B (it)
IT (1) IT1233229B (it)
NL (1) NL8901702A (it)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5018184A (en) * 1990-07-03 1991-05-21 At&T Bell Laboratories Automated channel test unit
US5144252A (en) * 1990-11-27 1992-09-01 Harris Corporation Method and apparatus for transducer measurements on a metallic pair
DE4200775C1 (it) * 1992-01-11 1993-05-19 Krone Ag, 1000 Berlin, De
GB9213992D0 (en) * 1992-07-01 1992-08-12 Raychem Ltd Remotely actuated switch and protection circuit
US5357556A (en) * 1992-08-10 1994-10-18 Pacific Bell System and method for telephone network testing
GB9218134D0 (en) * 1992-08-26 1992-10-14 Raychem Sa Nv Communication channel switching arrangement
US5404388A (en) * 1993-03-03 1995-04-04 Northern Telecom Limited Digital measurement of amplitude and phase of a sinusoidal signal and detection of load coil based on said measurement
US5699402A (en) * 1994-09-26 1997-12-16 Teradyne, Inc. Method and apparatus for fault segmentation in a telephone network
US5524043A (en) * 1994-12-27 1996-06-04 At&T Corp. Remotely connectable maintenance termination unit
US5644617A (en) * 1995-01-12 1997-07-01 Teradyne, Inc. Method and apparatus for testing cables
US5721773A (en) * 1995-03-30 1998-02-24 Lucent-Technologies Inc. Lightning protected maintenance termaination unit
US5896446A (en) * 1996-07-29 1999-04-20 Mars Incorporated Coin operated telephone auditor
US5754624A (en) * 1996-09-04 1998-05-19 Test-Um, Inc. Telephone line test kit
US5937033A (en) * 1997-05-20 1999-08-10 Gte Laboratories Incorporated Telephone system diagnostic measurement system including a distant terminal drop test measurement circuit
US6108404A (en) * 1998-02-05 2000-08-22 Mci Communications Corporation Method and system for testing a connection in a telephone network using interactive telephone response module
US6212258B1 (en) 1998-11-25 2001-04-03 Westell Technologies, Inc. Device for remotely testing a twisted pair transmission line
US6483914B1 (en) * 1999-05-06 2002-11-19 Nortel Networks Limited Telephone filter arrangement
US6535580B1 (en) * 1999-07-27 2003-03-18 Agere Systems Inc. Signature device for home phoneline network devices
US8223958B2 (en) * 2005-10-27 2012-07-17 Hewlett-Packard Development Company, L.P. Determining an active line
FR2904497A1 (fr) * 2006-07-28 2008-02-01 St Microelectronics Sa Protection d'une ligne de communication
JP4807436B2 (ja) * 2009-05-29 2011-11-02 ブラザー工業株式会社 通信装置
DE102009054193A1 (de) * 2009-11-24 2011-05-26 Metrawatt International Gmbh Verfahren zur Erkennung einer elektrischen Signatur

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4113998A (en) * 1975-10-14 1978-09-12 Teradyne, Inc. Testing electrically conductive lines to determine electrical characteristics thereof
US4139745A (en) * 1975-11-05 1979-02-13 Teradyne, Inc. Telephone line test system
US4373121A (en) * 1981-06-15 1983-02-08 Bell Telephone Laboratories, Incorporated Maintenance termination device
US4396809A (en) * 1981-08-03 1983-08-02 Bell Telephone Laboratories, Incorporated Maintenance termination unit
US4438299A (en) * 1982-02-26 1984-03-20 Tomim William L On-line telephone troubleshooting apparatus
US4653084A (en) * 1984-07-20 1987-03-24 Om Ahuja Remote actuated switch
US4675899A (en) * 1984-07-20 1987-06-23 Om Ahuja Frequency ring director
US4626632A (en) * 1985-07-25 1986-12-02 Porta Systems Corp. Maintenance termination unit
US4685120A (en) * 1985-11-26 1987-08-04 Teccor Electronics, Inc. Electronic trigger switch for maintenance termination unit

Also Published As

Publication number Publication date
GB2256332B (en) 1993-02-17
GB8916871D0 (en) 1989-09-06
GB9212171D0 (en) 1992-07-22
IT8967620A0 (it) 1989-07-21
FR2635244B1 (fr) 1994-01-07
GB2221124A (en) 1990-01-24
DE3923981A1 (de) 1990-01-25
US4852145A (en) 1989-07-25
CA1307862C (en) 1992-09-22
NL8901702A (nl) 1990-02-16
FR2635244A1 (fr) 1990-02-09
JPH0273755A (ja) 1990-03-13
BE1002711A3 (fr) 1991-05-14
GB2221124B (en) 1993-02-24
GB2256332A (en) 1992-12-02

Similar Documents

Publication Publication Date Title
IT1233229B (it) Procedimento e dispositivi di prova per impianti telefonici
BR9206605A (pt) Métodos e sistemas de múltiplo acesso de extensão telefônica
DE69229389T2 (de) Testsystem für Schaltkreise
NO931835D0 (no) Ikke-destruktivt testsystem
IT1271304B (it) Dispositivo di segnalazione per turbomacchine
DE69334139D1 (de) Testen von Nachrichtenübertragungsgerät
IT1239071B (it) Procedimento e dispositivo per la sterilizzazione di impianti di riempimento
NO881557D0 (no) Fremgangsmaate og anordning for testing av missil-systemer.
IS3533A7 (is) Búnaður til að draga úr sveifluáhrifum
IT8967531A0 (it) Procedimento e apparecchiatura di riparazione ceramica
IT9020675A0 (it) Dispositivo e procedimento di fissaggio
NO960149D0 (no) Testanordning
IT1174505B (it) Dispositivo di prova per impianti di iniezione
ITMI911089A0 (it) Procedimento e dispositivo di disaccoppiamento
FI931411A (fi) Testningsapparat foer bromssystem
DE69322446D1 (de) Modulator-Prüfsysteme
KR950015123U (ko) 확관시험 장치
DE69302684T2 (de) Testvorrichtung
IT8967675A0 (it) Dispositivo di patinatura
IT1227867B (it) Procedimento e dispositivo per nobilitare superfici di pannelli.
KR940004353U (ko) 반도체 테스트 장치
SE9301982D0 (sv) Testsystem
DE69319534D1 (de) Verbesserte Zeitbasiskalkulationsvorrichtung
KR940004380U (ko) 다이오드 어레이(array) 테스트 장치
DE69416728D1 (de) Testvorrichtung

Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19960729