NL7614000A - Signaleringssysteem voor overspanningsbescher- mers. - Google Patents

Signaleringssysteem voor overspanningsbescher- mers.

Info

Publication number
NL7614000A
NL7614000A NL7614000A NL7614000A NL7614000A NL 7614000 A NL7614000 A NL 7614000A NL 7614000 A NL7614000 A NL 7614000A NL 7614000 A NL7614000 A NL 7614000A NL 7614000 A NL7614000 A NL 7614000A
Authority
NL
Netherlands
Prior art keywords
signaling system
overvoltage protectors
protectors
overvoltage
signaling
Prior art date
Application number
NL7614000A
Other languages
English (en)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Priority to NL7614000A priority Critical patent/NL7614000A/nl
Priority to DE2754088A priority patent/DE2754088C3/de
Priority to US05/857,775 priority patent/US4164632A/en
Priority to CA292,603A priority patent/CA1091373A/en
Priority to SE7714155A priority patent/SE7714155L/xx
Priority to GB51998/77A priority patent/GB1539635A/en
Priority to JP14943177A priority patent/JPS5375812A/ja
Priority to FR7737831A priority patent/FR2374794A1/fr
Priority to BE183494A priority patent/BE861895A/xx
Publication of NL7614000A publication Critical patent/NL7614000A/nl

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/08—Indicating faults in circuits or apparatus
    • 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
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
NL7614000A 1976-12-17 1976-12-17 Signaleringssysteem voor overspanningsbescher- mers. NL7614000A (nl)

Priority Applications (9)

Application Number Priority Date Filing Date Title
NL7614000A NL7614000A (nl) 1976-12-17 1976-12-17 Signaleringssysteem voor overspanningsbescher- mers.
DE2754088A DE2754088C3 (de) 1976-12-17 1977-12-05 Schaltungsanordnung zum Erkennen defekter Sicherungen in Fernsprech leitungen
US05/857,775 US4164632A (en) 1976-12-17 1977-12-05 Signalling system for overvoltage protectors
CA292,603A CA1091373A (en) 1976-12-17 1977-12-07 Signalling system for overvoltage protectors
SE7714155A SE7714155L (sv) 1976-12-17 1977-12-14 Signaleringssystem for overspenningsskydd
GB51998/77A GB1539635A (en) 1976-12-17 1977-12-14 Telephone subscriber's line circuit including over-voltage protection means
JP14943177A JPS5375812A (en) 1976-12-17 1977-12-14 Protector fault signal system
FR7737831A FR2374794A1 (fr) 1976-12-17 1977-12-15 Systeme de signalisation pour dispositifs devant proteger des lignes telephoniques contre les surtensions
BE183494A BE861895A (fr) 1976-12-17 1977-12-15 Systeme de signalisation pour dispositifs devant proteger des lignes telephoniques contre des surtensions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7614000A NL7614000A (nl) 1976-12-17 1976-12-17 Signaleringssysteem voor overspanningsbescher- mers.

Publications (1)

Publication Number Publication Date
NL7614000A true NL7614000A (nl) 1978-06-20

Family

ID=19827392

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7614000A NL7614000A (nl) 1976-12-17 1976-12-17 Signaleringssysteem voor overspanningsbescher- mers.

Country Status (9)

Country Link
US (1) US4164632A (nl)
JP (1) JPS5375812A (nl)
BE (1) BE861895A (nl)
CA (1) CA1091373A (nl)
DE (1) DE2754088C3 (nl)
FR (1) FR2374794A1 (nl)
GB (1) GB1539635A (nl)
NL (1) NL7614000A (nl)
SE (1) SE7714155L (nl)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3538088C2 (de) * 1985-10-25 1993-11-11 Siemens Ag Schaltungsanordnung für einen Überspannungsschutz in elektronischen Fernsprechstationen
CA2146596C (en) * 1994-04-29 1999-09-21 Harry W. Moore, Iii Loop current detector
US6169649B1 (en) * 1999-07-16 2001-01-02 Lucent Technologies Inc. Detection circuit for circuit protection devices of a power supply and method of operation thereof

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR929425A (fr) * 1946-06-15 1947-12-26 Materiel Telephonique Systèmes d'essais des lignes
US3573780A (en) * 1968-09-27 1971-04-06 Franklin C Butterbaugh Automatic telephone alarm system
US3812303A (en) * 1972-10-11 1974-05-21 Itt Differential loop current detector
US3821495A (en) * 1972-12-26 1974-06-28 Bell Telephone Labor Inc Signal loop testing apparatus
US3852541A (en) * 1973-08-10 1974-12-03 E Altenberger Burglar alarm actuated by cut telephone wire
US3959605A (en) * 1974-09-11 1976-05-25 Jurschak John J Circuit for detecting loss of telephone line voltage
DE2451907C2 (de) * 1974-10-31 1981-11-12 Hartwig Dipl.-Ing. 2409 Scharbeutz Beyersdorf Schaltungsanordnung zur Überwachung von zwei Ruhestromschleifen auf Unterbrechung und Kurzschluß
ZA7675B (en) * 1975-02-12 1976-12-29 Sits Soc It Telecom Siemens Circuit arrangement for controlling the state of a user's line in a speech and data network

Also Published As

Publication number Publication date
DE2754088B2 (de) 1979-06-13
FR2374794A1 (fr) 1978-07-13
BE861895A (fr) 1978-06-15
JPS5375812A (en) 1978-07-05
US4164632A (en) 1979-08-14
DE2754088A1 (de) 1978-06-22
SE7714155L (sv) 1978-06-18
DE2754088C3 (de) 1980-02-07
CA1091373A (en) 1980-12-09
GB1539635A (en) 1979-01-31

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Legal Events

Date Code Title Description
BV The patent application has lapsed