ES8601607A1 - Un adaptador de linea compartida con la caracteristica de secreto - Google Patents

Un adaptador de linea compartida con la caracteristica de secreto

Info

Publication number
ES8601607A1
ES8601607A1 ES533597A ES533597A ES8601607A1 ES 8601607 A1 ES8601607 A1 ES 8601607A1 ES 533597 A ES533597 A ES 533597A ES 533597 A ES533597 A ES 533597A ES 8601607 A1 ES8601607 A1 ES 8601607A1
Authority
ES
Spain
Prior art keywords
line
subscriber
unique identification
identification signal
line adaptor
Prior art date
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
Application number
ES533597A
Other languages
English (en)
Other versions
ES533597A0 (es
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.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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 Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES533597A0 publication Critical patent/ES533597A0/es
Publication of ES8601607A1 publication Critical patent/ES8601607A1/es
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/02—Comparing digital values
    • 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
    • H04M1/70—Lock-out or secrecy arrangements in party-line systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Analysis (AREA)
  • Telephonic Communication Services (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

CIRCUITO ADAPTADOR DE LINEA COMPARTIDA CON LA CARACTERISTICA DE SECRETO. SE COMPONE DE: UN ELEMENTO DETECTOR DE CORRIENTE EN LAS LINEAS DEL ABONADO CUANDO ESTE DESCUELGA; UN DETECTOR Y UN SEÑALIZADOR DE INVERSION DE POLARIDAD EN DICHAS LINEAS; UN ACTIVADOR DE LOS CIRCUITOS ADAPTADORES DE LA LINEA COMPARTIDA; UN ELEMENTO DESACTIVADOR DE TODOS LOS APARATOS; UN RECEPTOR DE SEÑALIZACION PARA QUE EL CIRCUITO ADAPTADOR DE LINEA COMPARTIDA TRANSMITA UNA UNICA SEÑAL DE IDENTIFICACION A LA LINEA DE ABONADO; UN ELEMENTO QUE RESPONDE A LA UNICA SEÑAL DE IDENTIFICACION PARA ACTIVAR EL CIRCUITO ADAPTADOR DE MODO QUE PUEDA RECIBIRSE LA CORRIENTE DE LLAMADA DE TIMBRE DESDE LA LINEA DE ABONADO EN EL CIRCUITO ACTIVADO Y UN ELEMENTO RECEPTOR DE SEÑALES IDENTIFICATIVAS.
ES533597A 1983-06-24 1984-06-20 Un adaptador de linea compartida con la caracteristica de secreto Expired ES8601607A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/507,364 US4528424A (en) 1983-06-24 1983-06-24 Multiparty line adapter with privacy feature controlled by reversal of line polarity at a central power source

Publications (2)

Publication Number Publication Date
ES533597A0 ES533597A0 (es) 1985-10-16
ES8601607A1 true ES8601607A1 (es) 1985-10-16

Family

ID=24018353

Family Applications (1)

Application Number Title Priority Date Filing Date
ES533597A Expired ES8601607A1 (es) 1983-06-24 1984-06-20 Un adaptador de linea compartida con la caracteristica de secreto

Country Status (14)

Country Link
US (1) US4528424A (es)
EP (1) EP0129843B1 (es)
JP (1) JPS6016092A (es)
KR (1) KR920002965B1 (es)
BR (1) BR8402440A (es)
CA (1) CA1201231A (es)
DE (1) DE3483665D1 (es)
ES (1) ES8601607A1 (es)
IL (1) IL71724A (es)
IN (1) IN161443B (es)
MX (1) MX155197A (es)
PT (1) PT78302B (es)
YU (1) YU67184A (es)
ZA (1) ZA844006B (es)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4645877A (en) * 1984-06-14 1987-02-24 Harris Corporation Interface for connecting standard telephones to party lines
US4587380A (en) * 1984-06-14 1986-05-06 Harris Corporation Interface for connecting standard telephones to party lines
US4567330A (en) * 1984-06-14 1986-01-28 Harris Corporation Interface for connecting standard telephones to party lines
US4821319A (en) * 1985-04-25 1989-04-11 Alcatel Usa Corp. Single line telephone communication system
US5425089A (en) * 1992-01-27 1995-06-13 Chan; John Y. Low cost telephone caller identification device and method
JPH08125771A (ja) * 1994-10-20 1996-05-17 Nec Corp アナログ加入者線における端末選択方法およびその装置
US5699417A (en) * 1995-04-21 1997-12-16 Cidco Incorporated Text transmission using DTMF signalling
JP4248604B2 (ja) * 1996-07-11 2009-04-02 ブリティッシュ・テレコミュニケーションズ・パブリック・リミテッド・カンパニー 電話装置
DE69725578T2 (de) 1996-07-11 2004-07-29 British Telecommunications P.L.C. Telefonvorrichtung
US6044149A (en) * 1997-03-05 2000-03-28 Shaham; Israel Device for detecting DTMF tones
US7149514B1 (en) 1997-07-30 2006-12-12 Bellsouth Intellectual Property Corp. Cellular docking station
US20080207197A1 (en) 1997-07-30 2008-08-28 Steven Tischer Apparatus, method, and computer-readable medium for interfacing devices with communications networks
US6411802B1 (en) 1999-03-15 2002-06-25 Bellsouth Intellectual Property Management Corporation Wireless backup telephone device
US6647114B1 (en) 1999-05-14 2003-11-11 Conexant Systems, Inc. Telephone line interface circuit with virtual impedance
US6731749B1 (en) 1999-05-14 2004-05-04 Conexant Systems, Inc. Telephone line interface circuit with intelligent line current and voltage control
US6584196B1 (en) * 1999-05-14 2003-06-24 Conexant Systems, Inc. Electronic inductor with transmit signal telephone line driver
US6853723B1 (en) * 1999-10-12 2005-02-08 Intel Corporation High impedance polarity detector
US7120454B1 (en) 2001-12-26 2006-10-10 Bellsouth Intellectual Property Corp. Auto sensing home base station for mobile telephone with remote answering capabilites
KR100438055B1 (ko) * 2002-05-07 2004-07-02 (주) 아원 동시통화방지 아답터
US8275371B2 (en) 2002-07-15 2012-09-25 At&T Intellectual Property I, L.P. Apparatus and method for providing communications and connection-oriented services to devices
US8000682B2 (en) 2002-07-15 2011-08-16 At&T Intellectual Property I, L.P. Apparatus and method for restricting access to data
US8416804B2 (en) 2002-07-15 2013-04-09 At&T Intellectual Property I, L.P. Apparatus and method for providing a user interface for facilitating communications between devices
US8554187B2 (en) 2002-07-15 2013-10-08 At&T Intellectual Property I, L.P. Apparatus and method for routing communications between networks and devices
US8543098B2 (en) 2002-07-15 2013-09-24 At&T Intellectual Property I, L.P. Apparatus and method for securely providing communications between devices and networks
US8526466B2 (en) 2002-07-15 2013-09-03 At&T Intellectual Property I, L.P. Apparatus and method for prioritizing communications between devices
US7200424B2 (en) 2002-07-15 2007-04-03 Bellsouth Intelectual Property Corporation Systems and methods for restricting the use and movement of telephony devices
US8144693B1 (en) 2005-09-22 2012-03-27 Verizon Services Organization Inc. Method and system for providing telemetry, verification and/or other access in a SIP-based network

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1222990B (de) * 1962-09-14 1966-08-18 Siemens Ag Schaltungsanordnung fuer Gesellschaftsleitungen in Fernmelde-, insbesondere Fernsprechanlagen
US3688050A (en) * 1970-10-26 1972-08-29 Stromberg Carlson Corp Telephone set identification system using reverse polarity interrogation signal
CA1200036A (en) * 1978-03-13 1986-01-28 Guido Panizzon Partyline subscriber interface circuit
JPS55149590A (en) * 1979-05-09 1980-11-20 Nec Corp Communication system of branch line
HU195713B (en) * 1980-04-29 1988-06-28 Tavkoezlesi Kutato Intezet Service and industrial telephone equipment to a network stringed to line for alternative or exclusive selective traffic
DE3035308C2 (de) * 1980-09-18 1985-10-17 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung für Fernmeldeanlagen, insbesondere Fernsprechanlagen, mit Zweieranschlüssen

Also Published As

Publication number Publication date
IN161443B (es) 1987-12-05
YU67184A (en) 1988-02-29
EP0129843A2 (en) 1985-01-02
IL71724A (en) 1987-10-30
IL71724A0 (en) 1984-09-30
EP0129843A3 (en) 1988-04-20
BR8402440A (pt) 1985-04-02
ES533597A0 (es) 1985-10-16
KR920002965B1 (ko) 1992-04-11
KR850000162A (ko) 1985-02-25
US4528424A (en) 1985-07-09
JPS6016092A (ja) 1985-01-26
ZA844006B (en) 1985-01-30
DE3483665D1 (de) 1991-01-10
PT78302B (en) 1986-05-21
CA1201231A (en) 1986-02-25
PT78302A (en) 1984-04-01
MX155197A (es) 1988-02-01
EP0129843B1 (en) 1990-11-28

Similar Documents

Publication Publication Date Title
ES8601607A1 (es) Un adaptador de linea compartida con la caracteristica de secreto
US4989236A (en) Transmission system for telephone communications or data transfer
ES8401698A1 (es) Perfeccionamientos en un circuito de servicio para una linea telefonica local
GB1236776A (en) Television telephone system
GB1185678A (en) A Telephone System
GB1130699A (en) Telecommunication subscriber's set
GB1065540A (en) Circuit arrangement for dial pulse receiving facilities in a telephone exchange system
MY107201A (en) Alarm and test system with improved coupling circuit for a digital added main line.
GB1450978A (en) Remote test circuit for carrier telephones
CA1267960C (en) MULTIPLE ACCESS COMMUNICATION SYSTEM WITH COMPARISON CONTROL CIRCUIT FOR SWITCHING CONNECTIONS BETWEEN OFFICES
GB971802A (en) Signalling system for substation apparatus
JPS54158106A (en) Incoming switch system to telephone set equipment or picture communication equipment in telephone circuit
JPS6422160A (en) Facsimile system
JPS55137754A (en) Switch of telephone transmitter circuit
GB1272830A (en) Improvements in or relating to telecommunications exchange systems
DE3264166D1 (en) Parallel operation of telephone equipment on a digital loop
GB1259302A (es)
JPS57140061A (en) Call tracing method
JPS6436250A (en) Expanded telephone system
IE45880L (en) Signal transmission
GB984462A (en) Improved transmission system
GB1418085A (en) Circuit arrangement for generating prefix signals in telecommuni cation and particularly telephone systems
KR920014114A (ko) 전전자 교환기에서 아날로그 트렁크 및 구내 방송 동시 수용회로
JPS55117370A (en) Telephone terminal control system
JPS56123138A (en) Cordless telephone set

Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970401