IT1209683B - Circuito con limitazione delle chiamate interurbane per apparecchio telefonico elettronico. - Google Patents

Circuito con limitazione delle chiamate interurbane per apparecchio telefonico elettronico.

Info

Publication number
IT1209683B
IT1209683B IT8523378A IT2337885A IT1209683B IT 1209683 B IT1209683 B IT 1209683B IT 8523378 A IT8523378 A IT 8523378A IT 2337885 A IT2337885 A IT 2337885A IT 1209683 B IT1209683 B IT 1209683B
Authority
IT
Italy
Prior art keywords
limitation
circuit
telephone equipment
electronic telephone
interurban
Prior art date
Application number
IT8523378A
Other languages
English (en)
Other versions
IT8523378A0 (it
Inventor
W Smith Louis
Original Assignee
Gte Communication Syst
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 Gte Communication Syst filed Critical Gte Communication Syst
Publication of IT8523378A0 publication Critical patent/IT8523378A0/it
Application granted granted Critical
Publication of IT1209683B publication Critical patent/IT1209683B/it

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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S379/00—Telephonic communications
    • Y10S379/903—Password

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Telephonic Communication Services (AREA)
IT8523378A 1985-01-02 1985-12-24 Circuito con limitazione delle chiamate interurbane per apparecchio telefonico elettronico. IT1209683B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/688,230 US4612419A (en) 1985-01-02 1985-01-02 Toll restriction circuit for an electronic telephone station

Publications (2)

Publication Number Publication Date
IT8523378A0 IT8523378A0 (it) 1985-12-24
IT1209683B true IT1209683B (it) 1989-08-30

Family

ID=24763629

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8523378A IT1209683B (it) 1985-01-02 1985-12-24 Circuito con limitazione delle chiamate interurbane per apparecchio telefonico elettronico.

Country Status (4)

Country Link
US (1) US4612419A (it)
BE (1) BE903904A (it)
CA (1) CA1244977A (it)
IT (1) IT1209683B (it)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8516398D0 (en) * 1985-06-28 1985-07-31 Newell T J Telephone line access control
JPS63254834A (ja) * 1987-04-13 1988-10-21 Fujitsu Ltd 自動車電話装置
US4782516A (en) * 1987-06-25 1988-11-01 AT&T Information Systems Inc. American Telephone and Telegraph Company Fraud prevention in a public telephone station
JP2615185B2 (ja) * 1989-02-15 1997-05-28 三菱電機株式会社 車両用交流発電機
US5200995A (en) * 1990-12-24 1993-04-06 Gaukel John J Universal outgoing call restriction circuit
CA2067301C (en) * 1991-05-21 1997-02-25 Takamasa Motegi Receiver having an individual selective call function and a security function for preventing unauthorized use of the receiver
US5742669A (en) * 1992-12-08 1998-04-21 Lim; Boon-Chen Telephone for storing particulars of outgoing calls and/or special service codes
DE69431920D1 (de) * 1993-10-28 2003-01-30 Maldes Phoenix Ltd Sperrvorrichtung für eine telefonanlage
IT1265176B1 (it) * 1993-11-12 1996-10-31 Alcatel Italia Metodo di autenticazione di identita' adatto per applicazioni radiomobili apparecchio telefonico ed unita' di sicurezza atti ad
US5771446A (en) * 1995-06-23 1998-06-23 Audiovox Corporation Anti-fraud cellular security system
US5898756A (en) 1995-10-13 1999-04-27 Zoom Telephonics, Inc. Parallel-connected dialing signal transmission-inhibiting device for data transfer over a telephone link
US6169790B1 (en) * 1996-11-06 2001-01-02 U.S. Philips Corporation Method of restricting the duration of telephone calls and telephone implementing such a method
US6370233B1 (en) 1999-08-03 2002-04-09 Ameritech Corporation Security system with call management functionality
US6330317B1 (en) 1999-11-09 2001-12-11 Dean Garfinkel Call blocking system
US7483519B2 (en) * 2003-12-23 2009-01-27 At&T Intellectual Property I, L.P. Caller controlled systems to suppress system to de-activate 911 indicator
JP2005293282A (ja) * 2004-03-31 2005-10-20 Toshiba Corp 情報処理装置、情報処理装置の起動方法および情報処理装置の起動プログラム
KR101452704B1 (ko) * 2007-02-14 2014-10-23 삼성전자주식회사 복수의 버튼을 갖는 휴대용 디바이스에서의 패스워드 설정방법 및 패스 워드 인증 방법
US8099526B2 (en) * 2008-01-22 2012-01-17 Research In Motion Limited Method and apparatus for enabling and disabling a lock mode by squeezing or pinching the sides of a portable electronic device towards one another
ATE484916T1 (de) 2008-01-22 2010-10-15 Research In Motion Ltd Verfahren und vorrichtung zur aktivierung und deaktivierung eines sperrmodus auf einem tragbaren elektronischen gerät
CN201254918Y (zh) * 2008-09-01 2009-06-10 王建华 车库门控制系统

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4177358A (en) * 1974-09-16 1979-12-04 Mason John W Tone dial toll restrictor
US4336422A (en) * 1978-07-05 1982-06-22 Akzona Incorporated Toll restrictor
US4188508A (en) * 1978-08-21 1980-02-12 Brindle Patrick A Telephone call restricting apparatus
US4234764A (en) * 1979-01-22 1980-11-18 Ronald Beebe Long distance telephone call security system
US4314108A (en) * 1980-04-02 1982-02-02 Cindon Research Inc. Key set toll restrictor
US4332982A (en) * 1980-09-05 1982-06-01 Ident-A-Call, Inc. Telephone toll call security and logging device and method
GB2086187A (en) * 1980-10-09 1982-05-06 Standard Telephones Cables Ltd Toll barring
US4358640A (en) * 1980-11-25 1982-11-09 Murray Leonard Q Telephone security device
US4425480A (en) * 1981-11-20 1984-01-10 Communication Equipment And Engineering Co. Telephone station apparatus with selective restricting of local calls
US4453042A (en) * 1982-12-23 1984-06-05 Gte Automatic Electric Inc. Telephone station signaling lock circuit

Also Published As

Publication number Publication date
IT8523378A0 (it) 1985-12-24
CA1244977A (en) 1988-11-15
US4612419A (en) 1986-09-16
BE903904A (fr) 1986-04-16

Similar Documents

Publication Publication Date Title
IT1209683B (it) Circuito con limitazione delle chiamate interurbane per apparecchio telefonico elettronico.
DE3687153D1 (de) Teilnehmerschnittstellenschaltung.
IT1186394B (it) Circuito di stato di linea telefonica
GB2181324B (en) Telephone circuits
BR8702641A (pt) Disposicao de circuito de assinante telefonico
IT1178687B (it) Circuito telefonico di risposta mediante sintetizzazione vocale
GB2182527B (en) Telephone circuit
IT1173661B (it) Circuito per la produzione di impulsi di chiamata telefonica
IT1228171B (it) Disposizione circuitale per apparecchi terminali telefonici.
ES544627A0 (es) Un circuito integrado para aparato de abonado telefonico
IT8523054A0 (it) Circuito di alimentazione per apparecchi telefonici.
DK683888A (da) Telefonkredsloeb
GB8610627D0 (en) Telephone circuits
IT8567455A0 (it) Interfaccia di collegamento di circuito d abbonato per autocommutato re telefonico
KR860012528U (ko) 앤서링 폰의 송화 감지회로
KR860011084U (ko) 전기통신용 단자판
KR870011506U (ko) 전화기회로
GB2184330B (en) Telephone circuit
KR870001322U (ko) 통화전 임의의 주의문이 청취되는 전화기 회로
IT8312538A0 (it) Ricevitore supplementare per apparecchi telefonici
ES537483A0 (es) Circuito telefonico electronico con senalizacion por multifrecuencias
ES539397A0 (es) Circuito telefonico electronico con senalizacion por impulsos
FR2582890B3 (fr) Multiplexeur-convertisseur pour centraux telephoniques electroniques numeriques.
KR860015259U (ko) 경보용 전화 호출회로
BR8500278A (pt) Circuito de sigilo telefonico