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FI882788A0 - Snabbtelefonsystem. - Google Patents

Snabbtelefonsystem.

Info

Publication number
FI882788A0
FI882788A0 FI882788A FI882788A FI882788A0 FI 882788 A0 FI882788 A0 FI 882788A0 FI 882788 A FI882788 A FI 882788A FI 882788 A FI882788 A FI 882788A FI 882788 A0 FI882788 A0 FI 882788A0
Authority
FI
Finland
Prior art keywords
snabbtelefonsystem
Prior art date
Application number
FI882788A
Other languages
English (en)
Other versions
FI79769C (fi
FI79769B (fi
Inventor
Heikki Malkki
Original Assignee
Heikki Malkki
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 Heikki Malkki filed Critical Heikki Malkki
Priority to FI882788A priority Critical patent/FI79769C/fi
Publication of FI882788A0 publication Critical patent/FI882788A0/fi
Priority to FI885782A priority patent/FI885782A/fi
Priority to GB8912182A priority patent/GB2219714B/en
Priority to US07/358,684 priority patent/US5027347A/en
Application granted granted Critical
Publication of FI79769B publication Critical patent/FI79769B/fi
Publication of FI79769C publication Critical patent/FI79769C/fi

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/001—Two-way communication systems between a limited number of parties
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
FI882788A 1988-06-10 1988-06-10 Snabbtelefonsystem samt foerfarande foer uppkoppling i ett snabbtelefonsystem. FI79769C (fi)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FI882788A FI79769C (fi) 1988-06-10 1988-06-10 Snabbtelefonsystem samt foerfarande foer uppkoppling i ett snabbtelefonsystem.
FI885782A FI885782A (fi) 1988-06-10 1988-12-14 Foerfarande foer aostadkommande av en foerbindelse i snabbtelefonsystem och snabbtelefon.
GB8912182A GB2219714B (en) 1988-06-10 1989-05-26 Intercom system
US07/358,684 US5027347A (en) 1988-06-10 1989-05-30 Intercom system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI882788 1988-06-10
FI882788A FI79769C (fi) 1988-06-10 1988-06-10 Snabbtelefonsystem samt foerfarande foer uppkoppling i ett snabbtelefonsystem.

Publications (3)

Publication Number Publication Date
FI882788A0 true FI882788A0 (fi) 1988-06-10
FI79769B FI79769B (fi) 1989-10-31
FI79769C FI79769C (fi) 1991-01-14

Family

ID=8526625

Family Applications (1)

Application Number Title Priority Date Filing Date
FI882788A FI79769C (fi) 1988-06-10 1988-06-10 Snabbtelefonsystem samt foerfarande foer uppkoppling i ett snabbtelefonsystem.

Country Status (3)

Country Link
US (1) US5027347A (fi)
FI (1) FI79769C (fi)
GB (1) GB2219714B (fi)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116760486A (zh) * 2023-08-23 2023-09-15 深圳市飞瑞航空服务有限公司 一种对讲机用自动对频系统和方法

Families Citing this family (18)

* Cited by examiner, † Cited by third party
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JP2868162B2 (ja) * 1991-03-29 1999-03-10 株式会社日立製作所 二重化フィールドバスシステム
US5251203A (en) * 1991-12-23 1993-10-05 Xerox Corporation Hub privacy filter for active star CSMA/CD network
JP2952112B2 (ja) * 1992-07-15 1999-09-20 株式会社日立製作所 多線式フィールドバスシステム
GB2279849B (en) * 1993-06-02 1997-03-26 Vtech Communications Ltd Method of conducting an intercom communication between two cordless telephone handsets
US5644630A (en) * 1994-03-15 1997-07-01 Durco, Jr.; Andrew Intercom system for a service establishment
US5483528A (en) * 1994-10-11 1996-01-09 Telex Communications, Inc. TDM digital matrix intercom system
US6009507A (en) * 1995-06-14 1999-12-28 Avid Technology, Inc. System and method for distributing processing among one or more processors
US5842014A (en) * 1995-06-14 1998-11-24 Digidesign, Inc. System and method for distributing processing among one or more processors
US6072796A (en) 1995-06-14 2000-06-06 Avid Technology, Inc. Apparatus and method for accessing memory in a TDM network
US6181707B1 (en) 1997-04-04 2001-01-30 Clear Com Intercom system having unified control and audio data transport
GB2326305A (en) * 1997-06-13 1998-12-16 Schlumberger Ind Ltd Local exchange testing
US20070047712A1 (en) * 2003-03-07 2007-03-01 Cirrus Logic, Inc. Scalable, distributed architecture for fully connected network intercom system
JP2008512907A (ja) * 2004-09-07 2008-04-24 フリースケール セミコンダクター インコーポレイテッド 装置およびその制御インターフェース
US7764775B2 (en) * 2005-03-30 2010-07-27 Onq/Legrand, Inc. Distributed intercom system
US8311085B2 (en) 2009-04-14 2012-11-13 Clear-Com Llc Digital intercom network over DC-powered microphone cable
EP2745532A4 (en) * 2012-04-25 2015-04-01 Abb Technology Ltd TWO-CHANNEL ANALOG DOOR ENTRY SYSTEM AND METHOD THEREFOR
US9639906B2 (en) 2013-03-12 2017-05-02 Hm Electronics, Inc. System and method for wideband audio communication with a quick service restaurant drive-through intercom
KR101620540B1 (ko) * 2014-12-12 2016-05-24 주식회사 경동원 도어폰을 통하여 문열림이 가능한 2선식 비디오폰 시스템

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US3824344A (en) * 1973-03-22 1974-07-16 Bell Telephone Labor Inc Conference bridge circuit
SE396685B (sv) * 1973-03-22 1977-09-26 Western Electric Co Tidsdelad kommunikationsanleggning
US3889067A (en) * 1973-10-24 1975-06-10 Technology Service Corp Digital telephone switching system
US4097690A (en) * 1976-11-05 1978-06-27 Precision Components Inc. Intercommunication and alarm telephone system
GB2027565B (en) * 1977-11-07 1982-02-24 Post Office Switching of digital signals
US4203011A (en) * 1978-01-17 1980-05-13 Tie/Communications, Inc. Computer controlled key telephone station set
US4258236A (en) * 1979-04-04 1981-03-24 Conklin Instrument Corporation Remote telephone line switching and testing
DE3010702C2 (de) * 1980-03-20 1982-11-04 Standard Elektrik Lorenz Ag, 7000 Stuttgart Digitales Nachrichtenübermittlungssystem
DE3121774A1 (de) * 1981-05-26 1982-12-16 Deutsche Telephonwerke Und Kabelindustrie Ag, 1000 Berlin Koppelanordnung fuer ein digitales vermittlungssystem
EP0103437B1 (en) * 1982-09-15 1986-08-13 Plessey Overseas Limited Improvements in or relating to digital electronic switching systems
GB2128446B (en) * 1982-10-02 1985-09-04 Standard Telephones Cables Ltd Telecommunication exchange
US4573151A (en) * 1984-01-20 1986-02-25 Stromberg-Carlson Corp. Interface unit for telephone system having remote units
US4637035A (en) * 1984-02-16 1987-01-13 Paradyne Corporation Digital modem for multiple telephone circuits
US4601029A (en) * 1984-09-21 1986-07-15 Itt Corporation Communication switching system
US4674083A (en) * 1984-11-16 1987-06-16 Solid State Systems, Inc. Time division multiplexed switching structure for PBX
DE3535411A1 (de) * 1985-10-04 1987-04-09 Neumann Elektronik Gmbh Einrichtung und verfahren zur durchfuehrung von telefongespraechen zwischen drei und mehr teilnehmerstellen
CA1244923A (en) * 1985-11-20 1988-11-15 Gerald Molnar Expansion port for use in a communication system
US4710769A (en) * 1985-12-30 1987-12-01 Ibm Corporation Transmit-secure non-blocking circuit-switched local area network
GB2191658B (en) * 1986-06-13 1990-09-05 Stc Plc Telephone exchange
DE3632710A1 (de) * 1986-09-26 1988-03-31 Philips Patentverwaltung Zweidraht-zeitgetrenntlageverfahren zur vollduplexuebertragung zwischen einer hauptstation und einer nebenstation
US4782515A (en) * 1986-11-07 1988-11-01 Phillips Martin J Digitally controlled intercommunications system
US4893310A (en) * 1987-11-30 1990-01-09 Northern Telecom Limited Digital key telephone system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116760486A (zh) * 2023-08-23 2023-09-15 深圳市飞瑞航空服务有限公司 一种对讲机用自动对频系统和方法
CN116760486B (zh) * 2023-08-23 2023-10-13 深圳市飞瑞航空服务有限公司 一种对讲机用自动对频系统和方法

Also Published As

Publication number Publication date
GB2219714A (en) 1989-12-13
GB2219714B (en) 1992-10-28
US5027347A (en) 1991-06-25
GB8912182D0 (en) 1989-07-12
FI79769C (fi) 1991-01-14
FI79769B (fi) 1989-10-31

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Legal Events

Date Code Title Description
MM Patent lapsed
MM Patent lapsed

Owner name: MALKKI, HEIKKI