DK11995A - Telephone system fuse - Google Patents

Telephone system fuse Download PDF

Info

Publication number
DK11995A
DK11995A DK11995A DK11995A DK11995A DK 11995 A DK11995 A DK 11995A DK 11995 A DK11995 A DK 11995A DK 11995 A DK11995 A DK 11995A DK 11995 A DK11995 A DK 11995A
Authority
DK
Denmark
Prior art keywords
telephone system
system fuse
fuse
telephone
Prior art date
Application number
DK11995A
Other languages
Danish (da)
Inventor
Christian Henri Krause
Original Assignee
Christian Henri Krause
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 Christian Henri Krause filed Critical Christian Henri Krause
Priority to DK11995A priority Critical patent/DK11995A/en
Priority to AU24448/95A priority patent/AU2444895A/en
Priority to EP95918539A priority patent/EP0759244A1/en
Priority to PCT/DK1995/000173 priority patent/WO1995030297A2/en
Publication of DK11995A publication Critical patent/DK11995A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
    • H04M1/667—Preventing unauthorised calls from a telephone set
    • H04M1/67—Preventing unauthorised calls from a telephone set by electronic means
    • H04M1/673—Preventing unauthorised calls from a telephone set by electronic means the user being required to key in a code

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Alarm Systems (AREA)
DK11995A 1994-05-02 1995-02-02 Telephone system fuse DK11995A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DK11995A DK11995A (en) 1994-05-02 1995-02-02 Telephone system fuse
AU24448/95A AU2444895A (en) 1994-05-02 1995-04-26 Telephone break-in security unit
EP95918539A EP0759244A1 (en) 1994-05-02 1995-04-26 Telephone break-in security unit
PCT/DK1995/000173 WO1995030297A2 (en) 1994-05-02 1995-04-26 Telephone break-in security unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK49694 1994-05-02
DK11995A DK11995A (en) 1994-05-02 1995-02-02 Telephone system fuse

Publications (1)

Publication Number Publication Date
DK11995A true DK11995A (en) 1995-11-03

Family

ID=26063352

Family Applications (1)

Application Number Title Priority Date Filing Date
DK11995A DK11995A (en) 1994-05-02 1995-02-02 Telephone system fuse

Country Status (4)

Country Link
EP (1) EP0759244A1 (en)
AU (1) AU2444895A (en)
DK (1) DK11995A (en)
WO (1) WO1995030297A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466627A (en) * 1944-08-14 1949-04-05 Watford Electric & Mfg Company Electromagnetic escapement mechanism

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5926529A (en) * 1995-03-17 1999-07-20 U.S. Philips Corporation Communication system for detecting an unauthorized intruder terminal unit
NO964998D0 (en) * 1996-11-22 1996-11-22 Rune Eritzland Method and device for securing telecommunication line
FR2769448B1 (en) * 1997-10-06 1999-11-12 Nicole Maschio TELEPHONE COMMUNICATIONS FILTERING DEVICE
RU2761351C1 (en) * 2021-03-30 2021-12-07 Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский университет "Московский институт электронной техники" Device for protection against unauthorized wiretapping talks in the indoor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2614162B1 (en) * 1987-04-17 1993-12-10 Flonic Sa ANALOGUE AUTHENTICATION SYSTEM RECIPROCED BETWEEN A TERMINAL AND A TRANSMISSION LINE
DE3715580A1 (en) * 1987-05-09 1988-11-24 Standard Elektrik Lorenz Ag CIRCUIT ARRANGEMENT FOR MONITORING A TELEPHONE CONNECTION LINE
US4969178A (en) * 1989-10-26 1990-11-06 Telecommunication Laboratories, Directorate General of Telecommunications , Ministry of Communications Multipurpose subscriber local line monitoring device
FR2655224B1 (en) * 1989-11-24 1995-06-02 Marc Regnier DEVICE FOR PROTECTING A SUBSCRIBER LINE AGAINST ILLEGAL CONNECTION.
EP0454262A1 (en) * 1990-04-26 1991-10-30 Koninklijke KPN N.V. Electronic circuit for signalling and/or preventing improper use of a telephone subscriber line
FR2672757B1 (en) * 1991-02-08 1999-02-26 France Telecom DEVICE FOR DETECTING AN UNAUTHORIZED CONNECTION ON A SUBSCRIBER TELEPHONE LINE.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466627A (en) * 1944-08-14 1949-04-05 Watford Electric & Mfg Company Electromagnetic escapement mechanism

Also Published As

Publication number Publication date
WO1995030297A2 (en) 1995-11-09
WO1995030297A3 (en) 1995-12-07
AU2444895A (en) 1995-11-29
EP0759244A1 (en) 1997-02-26

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