JPS5641025B2 - - Google Patents

Info

Publication number
JPS5641025B2
JPS5641025B2 JP15302877A JP15302877A JPS5641025B2 JP S5641025 B2 JPS5641025 B2 JP S5641025B2 JP 15302877 A JP15302877 A JP 15302877A JP 15302877 A JP15302877 A JP 15302877A JP S5641025 B2 JPS5641025 B2 JP S5641025B2
Authority
JP
Japan
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
JP15302877A
Other versions
JPS53134306A (en
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 filed Critical
Publication of JPS53134306A publication Critical patent/JPS53134306A/ja
Publication of JPS5641025B2 publication Critical patent/JPS5641025B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Telephonic Communication Services (AREA)
JP15302877A 1976-12-21 1977-12-21 Keyless telephone set assembled with interface circuit Granted JPS53134306A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/752,743 US4088844A (en) 1976-12-21 1976-12-21 Telephone station set interface circuit

Publications (2)

Publication Number Publication Date
JPS53134306A JPS53134306A (en) 1978-11-22
JPS5641025B2 true JPS5641025B2 (ja) 1981-09-25

Family

ID=25027633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15302877A Granted JPS53134306A (en) 1976-12-21 1977-12-21 Keyless telephone set assembled with interface circuit

Country Status (3)

Country Link
US (1) US4088844A (ja)
JP (1) JPS53134306A (ja)
CA (1) CA1089134A (ja)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL59950A (en) * 1979-05-04 1983-05-15 Gen Electric Co Ltd P.a.b.x.telephone systems with external extension adaptor
US4292474A (en) * 1979-08-13 1981-09-29 Oki Electronics Of America, Inc. Electronic key telephone system with bi-directional serial data stream station control
US4572928A (en) * 1982-11-09 1986-02-25 Tamura Electric Works, Ltd. Key telephone system
US4759059A (en) * 1984-06-01 1988-07-19 Christensen Larry B Analog telephone circuit for digital telephone system
JPH0828902B2 (ja) * 1986-11-17 1996-03-21 松下電工株式会社 電話システム
JPH0728436B2 (ja) * 1988-04-28 1995-03-29 松下電器産業株式会社 構内電話交換機
US5048080A (en) * 1990-06-29 1991-09-10 At&T Bell Laboratories Control and interface apparatus for telephone systems
US5550901A (en) * 1994-08-24 1996-08-27 Coherent Communications Systems Corp. Full-duplex adapter for PBX telephone system
US6343126B1 (en) 1996-03-27 2002-01-29 Hello Direct, Inc. Method and apparatus for interfacing analog telephone apparatus to a digital, analog or hybrid telephone switching system
US5892823A (en) * 1996-03-27 1999-04-06 Hello Direct, Inc. Smart interface technology
US5912964A (en) * 1996-03-27 1999-06-15 Hello Direct, Inc. Adaptive telephone handset interface
JP3067670B2 (ja) * 1997-02-07 2000-07-17 日本電気株式会社 ボタン電話装置及びボタン電話制御プログラムを記憶した媒体
US7031454B1 (en) 1997-11-06 2006-04-18 Hello Direct, Inc. Method and apparatus for interfacing telephone apparatus to a digital, analog or hybrid telephone switching system
USD732502S1 (en) * 2014-03-11 2015-06-23 Panasonic Intellectual Property Management Co., Ltd. Telephone base unit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5141905A (ja) * 1974-10-05 1976-04-08 Oki Electric Ind Co Ltd Deetadensohoshiki

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701854A (en) * 1970-12-21 1972-10-31 Bell Telephone Labor Inc Key telephone system call signaling and station set data transfer arrangement
US3789154A (en) * 1972-12-11 1974-01-29 Bell Telephone Labor Inc Switchhook status signaling arrangement
US3789152A (en) * 1972-12-11 1974-01-29 Bell Telephone Labor Inc Data format converter
US3997738A (en) * 1974-10-21 1976-12-14 International Telephone And Telegraph Corporation Line circuit for telecommunications exchange using TDM
US3914559A (en) * 1974-11-07 1975-10-21 Bell Telephone Labor Inc Universal PBX line circuit for key and non-key service

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5141905A (ja) * 1974-10-05 1976-04-08 Oki Electric Ind Co Ltd Deetadensohoshiki

Also Published As

Publication number Publication date
CA1089134A (en) 1980-11-04
JPS53134306A (en) 1978-11-22
US4088844A (en) 1978-05-09

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