WO1995030297A3 - Unite de securite empechant le piratage de lignes telephoniques - Google Patents
Unite de securite empechant le piratage de lignes telephoniques Download PDFInfo
- Publication number
- WO1995030297A3 WO1995030297A3 PCT/DK1995/000173 DK9500173W WO9530297A3 WO 1995030297 A3 WO1995030297 A3 WO 1995030297A3 DK 9500173 W DK9500173 W DK 9500173W WO 9530297 A3 WO9530297 A3 WO 9530297A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- code
- security unit
- telephone
- telephone line
- connection
- Prior art date
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)
Abstract
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU24448/95A AU2444895A (en) | 1994-05-02 | 1995-04-26 | Telephone break-in security unit |
EP95918539A EP0759244A1 (fr) | 1994-05-02 | 1995-04-26 | Unite de securite empechant le piratage de lignes telephoniques |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK0496/94 | 1994-05-02 | ||
DK49694 | 1994-05-02 | ||
DK0119/95 | 1995-02-02 | ||
DK11995A DK11995A (da) | 1994-05-02 | 1995-02-02 | Sikringsenhed til telefonsystem |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1995030297A2 WO1995030297A2 (fr) | 1995-11-09 |
WO1995030297A3 true WO1995030297A3 (fr) | 1995-12-07 |
Family
ID=26063352
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DK1995/000173 WO1995030297A2 (fr) | 1994-05-02 | 1995-04-26 | Unite de securite empechant le piratage de lignes telephoniques |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0759244A1 (fr) |
AU (1) | AU2444895A (fr) |
DK (1) | DK11995A (fr) |
WO (1) | WO1995030297A2 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2466627A (en) * | 1944-08-14 | 1949-04-05 | Watford Electric & Mfg Company | Electromagnetic escapement mechanism |
JPH10500832A (ja) * | 1995-03-17 | 1998-01-20 | フィリップス エレクトロニクス ネムローゼ フェンノートシャップ | 無許可で侵入する端末ユニットを検出する通信システム |
NO964998D0 (no) * | 1996-11-22 | 1996-11-22 | Rune Eritzland | Fremgangsmåte og innretning til sikring av telekommunikasjonslinje |
FR2769448B1 (fr) * | 1997-10-06 | 1999-11-12 | Nicole Maschio | Dispositif de filtrage de communications telephoniques |
RU2761351C1 (ru) * | 2021-03-30 | 2021-12-07 | Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский университет "Московский институт электронной техники" | Устройство для защиты от несанкционированного прослушивания разговоров в помещении |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2205216A (en) * | 1987-05-09 | 1988-11-30 | Alcatel Nv | Circuit arrangement for monitoring a telephone line |
US4852155A (en) * | 1987-04-17 | 1989-07-25 | Schlumberger Industries | Systeme d'authentification analogique reciproque entre un terminal et une ligne de transmission |
US4969178A (en) * | 1989-10-26 | 1990-11-06 | Telecommunication Laboratories, Directorate General of Telecommunications , Ministry of Communications | Multipurpose subscriber local line monitoring device |
FR2655224A1 (fr) * | 1989-11-24 | 1991-05-31 | Regnier Marc | Dispositif de protection d'une ligne d'abonne contre un branchement illicite. |
EP0454262A1 (fr) * | 1990-04-26 | 1991-10-30 | Koninklijke KPN N.V. | Circuit électronique pour signaler et/ou empêcher l'usage abusif d'une ligne téléphonique d'abonné |
EP0498734A1 (fr) * | 1991-02-08 | 1992-08-12 | France Telecom | Dispositif pour la détection d'un branchement non autorisé sur une ligne téléphonique d'abonné |
-
1995
- 1995-02-02 DK DK11995A patent/DK11995A/da unknown
- 1995-04-26 EP EP95918539A patent/EP0759244A1/fr active Pending
- 1995-04-26 AU AU24448/95A patent/AU2444895A/en not_active Abandoned
- 1995-04-26 WO PCT/DK1995/000173 patent/WO1995030297A2/fr not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4852155A (en) * | 1987-04-17 | 1989-07-25 | Schlumberger Industries | Systeme d'authentification analogique reciproque entre un terminal et une ligne de transmission |
GB2205216A (en) * | 1987-05-09 | 1988-11-30 | Alcatel Nv | Circuit arrangement for monitoring a telephone line |
US4969178A (en) * | 1989-10-26 | 1990-11-06 | Telecommunication Laboratories, Directorate General of Telecommunications , Ministry of Communications | Multipurpose subscriber local line monitoring device |
FR2655224A1 (fr) * | 1989-11-24 | 1991-05-31 | Regnier Marc | Dispositif de protection d'une ligne d'abonne contre un branchement illicite. |
EP0454262A1 (fr) * | 1990-04-26 | 1991-10-30 | Koninklijke KPN N.V. | Circuit électronique pour signaler et/ou empêcher l'usage abusif d'une ligne téléphonique d'abonné |
EP0498734A1 (fr) * | 1991-02-08 | 1992-08-12 | France Telecom | Dispositif pour la détection d'un branchement non autorisé sur une ligne téléphonique d'abonné |
Also Published As
Publication number | Publication date |
---|---|
AU2444895A (en) | 1995-11-29 |
DK11995A (da) | 1995-11-03 |
WO1995030297A2 (fr) | 1995-11-09 |
EP0759244A1 (fr) | 1997-02-26 |
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