DE68919995D1 - Sicherheitshandapparat. - Google Patents

Sicherheitshandapparat.

Info

Publication number: DE68919995D1
Authority: DE; Germany
Prior art keywords: handset; security; security handset
Prior art date: 1988-10-28
Legal status (The legal status 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 status listed.): Expired - Fee Related

Application number

DE68919995T

Other languages

English (en)

Other versions

DE68919995T2 (de

Inventor

Donald T Mcclain

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Nortel Networks Ltd

Original Assignee

Northern Telecom Ltd

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.)

1988-10-28

Filing date

1989-05-10

Publication date

1995-01-26

1989-05-10 Application filed by Northern Telecom Ltd filed Critical Northern Telecom Ltd

1995-01-26 Application granted granted Critical

1995-01-26 Publication of DE68919995D1 publication Critical patent/DE68919995D1/de

1995-05-18 Publication of DE68919995T2 publication Critical patent/DE68919995T2/de

2009-05-11 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Links

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/68—Circuit arrangements for preventing eavesdropping
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Telephone Set Structure (AREA)
Telephone Function (AREA)

DE68919995T 1988-10-28 1989-05-10 Sicherheitshandapparat. Expired - Fee Related DE68919995T2 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US07/264,992 US4942605A (en)	1987-12-08	1988-10-28	Security handset

Publications (2)

Publication Number	Publication Date
DE68919995D1 true DE68919995D1 (de)	1995-01-26
DE68919995T2 DE68919995T2 (de)	1995-05-18

Family

ID=23008504

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE68919995T Expired - Fee Related DE68919995T2 (de)	1988-10-28	1989-05-10	Sicherheitshandapparat.

Country Status (5)

Country	Link
US (1)	US4942605A (de)
EP (1)	EP0365741B1 (de)
JP (1)	JPH0744596B2 (de)
CA (1)	CA1301387C (de)
DE (1)	DE68919995T2 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP3734068B2 (ja)	1997-11-28	2006-01-11	株式会社日本コンラックス	硬貨払出装置
US6411828B1 (en) *	1999-03-19	2002-06-25	Ericsson Inc.	Communications devices and methods that operate according to communications device orientations determined by reference to gravitational sensors
US6549792B1 (en) *	1999-06-25	2003-04-15	Agere Systems Inc.	Accelerometer influenced communication device
WO2004059954A1 (fr) *	2002-12-31	2004-07-15	Minhai Liang	Procede et dispositif empechant une unite de telecommande d'intercepter le dispositif de communication mobile
US9158496B2 (en)	2012-02-16	2015-10-13	High Sec Labs Ltd.	Secure audio peripheral device
US8922372B2 (en)	2012-07-13	2014-12-30	High Sec Labs Ltd	Secure peripheral connecting device
US10194011B2 (en) *	2016-09-27	2019-01-29	High Sec Labs Ltd.	Method and apparatus for securing voice over IP telephone device
RU2632188C1 (ru) *	2016-12-07	2017-10-04	Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский университет "Московский институт электронной техники"	Устройство для защиты от несанкционированного прослушивания разговоров в помещении
US11606460B2 (en) *	2021-04-07	2023-03-14	High Sec Labs Ltd.	Mutual disabling unit for multiple phones

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE469339A (de) *	1945-04-06
US3627930A (en) *	1969-10-27	1971-12-14	Bell Telephone Labor Inc	Dial-in-handset telephone assembly
US3715514A (en) *	1970-10-07	1973-02-06	Dektor Counterintelligence And	Telephone security device
JPS4735811U (de) *	1971-05-11	1972-12-21
AU8205075A (en) *	1974-06-20	1976-12-16	Warman Int Ltd	Seal assembly for rotating shaft
FR2284256A7 (fr) *	1975-06-26	1976-04-02	Serres Bernard	Perfectionnements aux combines pour postes telephoniques
DE2915774C2 (de) *	1979-04-19	1983-08-04	A. Grothe & Söhne KG, 5000 Köln	Fernsprechgerät und/oder Station einer Gegensprechanlage mit einem Handapparat
JPS6052758U (ja) *	1983-09-20	1985-04-13	日本電信電話株式会社	電話機
US4504701A (en) *	1983-11-14	1985-03-12	J. C. Penney Company, Inc.	Telephone having circuitry for reducing the audio output of the ringing signal
US4675901A (en) *	1985-05-10	1987-06-23	Geodynamics Corporation	Automatic disconnect device with protected ringer
JPS6330055U (de) *	1986-08-06	1988-02-27
US4691336A (en) *	1986-10-10	1987-09-01	Harris Corporation	Telephone test set having an auxiliary amplifier and speaker for permitting listening to line signals
US4837819A (en) *	1987-12-08	1989-06-06	Northern Telecom Limited	Security handset

1988
- 1988-10-28 US US07/264,992 patent/US4942605A/en not_active Expired - Fee Related
1989
- 1989-03-15 CA CA000593869A patent/CA1301387C/en not_active Expired - Fee Related
- 1989-05-10 DE DE68919995T patent/DE68919995T2/de not_active Expired - Fee Related
- 1989-05-10 EP EP89108417A patent/EP0365741B1/de not_active Expired - Lifetime
- 1989-06-07 JP JP1143184A patent/JPH0744596B2/ja not_active Expired - Lifetime

Also Published As

Publication number	Publication date
CA1301387C (en)	1992-05-19
EP0365741B1 (de)	1994-12-14
DE68919995T2 (de)	1995-05-18
EP0365741A3 (de)	1991-02-06
EP0365741A2 (de)	1990-05-02
US4942605A (en)	1990-07-17
JPH02130059A (ja)	1990-05-18
JPH0744596B2 (ja)	1995-05-15

Legal Events

Date	Code	Title	Description
1996-01-18	8364	No opposition during term of opposition
2002-07-18	8339	Ceased/non-payment of the annual fee

Publication	Publication Date	Title
FI904831A0 (fi)	1990-10-01	Spirallindad omvaend -osmosmembrancell.
DE58905119D1 (de)	1993-09-09	Heteroaryloxyessigsaeure-n-isopropylanilide.
FI896232A0 (fi)	1989-12-22	Roerarrangemang foer kablar.
DE68908679D1 (de)	1993-09-30	Sicherheitssiegel.
FI904561A0 (fi)	1990-09-17	Modifierade hydrofila polyestrar.
DE58904326D1 (de)	1993-06-17	Rakelfarbwerk.
DE58904437D1 (de)	1993-06-24	Rakelfarbwerk.
DE68912569D1 (de)	1994-03-03	Schlüsselring.
DE68903708D1 (de)	1993-01-14	Spielkasten.
DE58902774D1 (de)	1992-12-24	Pflanztafel.
FI910045A0 (fi)	1991-01-04	Foerrbaettrad dosgivare foer oegondroppar.
DE68903080D1 (de)	1992-11-05	Drehverschluss.
DE58902346D1 (de)	1992-11-05	Traenkeventil.
DE68919995D1 (de)	1995-01-26	Sicherheitshandapparat.
DE68923689D1 (de)	1995-09-07	Fernsprechweckdetektor.
DE58903112D1 (de)	1993-02-04	Kannenstock.
DE68901775D1 (de)	1992-07-23	Mammographiegeraet.
DE58902190D1 (de)	1992-10-08	Schaelmaschine.
FI895916A0 (fi)	1989-12-12	Emulsionspolymerer.
FI891294A (fi)	1989-09-23	Modifierade terpolymer-emulsioner.
FI894016A (fi)	1990-03-01	Vattendunk.
DE58903712D1 (de)	1993-04-15	Gegenseheinrichtung.
DE58900632D1 (de)	1992-02-06	Diebstahlsicherung.
DE68917662D1 (de)	1994-09-29	Einbauschlösser.
DE68901427D1 (de)	1992-06-11	Sicherheitshaken.