BR8402440A - Adaptador de linha de multiplos assinantes com dispositivo de privacidade - Google Patents

Adaptador de linha de multiplos assinantes com dispositivo de privacidade

Info

Publication number
BR8402440A
BR8402440A BR8402440A BR8402440A BR8402440A BR 8402440 A BR8402440 A BR 8402440A BR 8402440 A BR8402440 A BR 8402440A BR 8402440 A BR8402440 A BR 8402440A BR 8402440 A BR8402440 A BR 8402440A
Authority
BR
Brazil
Prior art keywords
line adapter
subscribers line
multiple subscribers
privacy device
privacy
Prior art date
Application number
BR8402440A
Other languages
English (en)
Inventor
Francisco Arturo Middleton
Franklin Hargrave
Original Assignee
Int Standard Electric Corp
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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Publication of BR8402440A publication Critical patent/BR8402440A/pt

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)
BR8402440A 1983-06-24 1984-12-24 Adaptador de linha de multiplos assinantes com dispositivo de privacidade BR8402440A (pt)

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 (1)

Publication Number Publication Date
BR8402440A true BR8402440A (pt) 1985-04-02

Family

ID=24018353

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8402440A BR8402440A (pt) 1983-06-24 1984-12-24 Adaptador de linha de multiplos assinantes com dispositivo de privacidade

Country Status (14)

Country Link
US (1) US4528424A (pt)
EP (1) EP0129843B1 (pt)
JP (1) JPS6016092A (pt)
KR (1) KR920002965B1 (pt)
BR (1) BR8402440A (pt)
CA (1) CA1201231A (pt)
DE (1) DE3483665D1 (pt)
ES (1) ES533597A0 (pt)
IL (1) IL71724A (pt)
IN (1) IN161443B (pt)
MX (1) MX155197A (pt)
PT (1) PT78302B (pt)
YU (1) YU67184A (pt)
ZA (1) ZA844006B (pt)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4567330A (en) * 1984-06-14 1986-01-28 Harris Corporation Interface for connecting standard telephones to party lines
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
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
US6192231B1 (en) 1996-07-11 2001-02-20 British Telecommunications Public Limited Company Telephone apparatus
WO1998003003A1 (en) * 1996-07-11 1998-01-22 British Telecommunications Public Limited Company Telephone apparatus
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
US6584196B1 (en) * 1999-05-14 2003-06-24 Conexant Systems, Inc. Electronic inductor with transmit signal telephone line driver
US6731749B1 (en) 1999-05-14 2004-05-04 Conexant Systems, Inc. Telephone line interface circuit with intelligent line current and voltage control
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
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
US7200424B2 (en) 2002-07-15 2007-04-03 Bellsouth Intelectual Property Corporation Systems and methods for restricting the use and movement of telephony devices
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
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
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
US8000682B2 (en) 2002-07-15 2011-08-16 At&T Intellectual Property I, L.P. Apparatus and method for restricting access to data
US8526466B2 (en) 2002-07-15 2013-09-03 At&T Intellectual Property I, L.P. Apparatus and method for prioritizing communications between devices
US8374166B1 (en) 2005-09-22 2013-02-12 Verizon Patent And Licensing Inc. Method and system for providing call waiting features 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
ZA844006B (en) 1985-01-30
ES8601607A1 (es) 1985-10-16
KR920002965B1 (ko) 1992-04-11
DE3483665D1 (de) 1991-01-10
ES533597A0 (es) 1985-10-16
EP0129843A3 (en) 1988-04-20
YU67184A (en) 1988-02-29
EP0129843B1 (en) 1990-11-28
PT78302A (en) 1984-04-01
IL71724A0 (en) 1984-09-30
IL71724A (en) 1987-10-30
US4528424A (en) 1985-07-09
MX155197A (es) 1988-02-01
KR850000162A (ko) 1985-02-25
EP0129843A2 (en) 1985-01-02
JPS6016092A (ja) 1985-01-26
CA1201231A (en) 1986-02-25
IN161443B (pt) 1987-12-05
PT78302B (en) 1986-05-21

Similar Documents

Publication Publication Date Title
BR8402440A (pt) Adaptador de linha de multiplos assinantes com dispositivo de privacidade
DK369784A (da) Kommunikationssystem med flere abonnenter
SE8401419L (sv) Kommunikationsanordning
DE3486456D1 (de) Nachrichtennetzsystem
BR8407241A (pt) Dispositivo de ligacao
DK131484D0 (da) Flerlaget serviet
DE3481016D1 (de) Leitungslegevorrichtung.
FI820959L (fi) Transmissionsledning
ES536153A0 (es) Sistema de telecomunicaciones
IT1190486B (it) Dispositivo di trasmissione fluidomeccanico
RO90231A (ro) Dispozitiv de sustinere
AR231890A1 (es) Aparato telefonico de abonado
FI834026A0 (fi) Adapter foer en elektrisk stroemskena
ATA36983A (de) Kommunikationssystem
NO840708L (no) Tastkoblingsanordning
BR8300930A (pt) Dispositivo de sigilo telefonico
DD231244A3 (de) Uebertragungsvorrichtung
NO834534L (no) Forbindelsesinnretning
BR6101296U (pt) Discriminador de linha telefonica
RO87479A2 (ro) Dispozitiv pentru cuplarea ferestrelor
DK178683D0 (da) Endelaenseanordning
ES270688Y (es) Dispositivo adaptador de persiana.
TR23308A (tr) Haberlesme sistemlerinde kullanilmaya mahsus tevsi cihazi
SE8305334D0 (sv) Serviceenhet
BR8500525A (pt) Discriminador de linha telefonica

Legal Events

Date Code Title Description
B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 22/05/99