JPS5530207A - Main station connection system of key telephone system - Google Patents

Main station connection system of key telephone system

Info

Publication number
JPS5530207A
JPS5530207A JP10235378A JP10235378A JPS5530207A JP S5530207 A JPS5530207 A JP S5530207A JP 10235378 A JP10235378 A JP 10235378A JP 10235378 A JP10235378 A JP 10235378A JP S5530207 A JPS5530207 A JP S5530207A
Authority
JP
Japan
Prior art keywords
main
main station
switch
signal
key telephone
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.)
Granted
Application number
JP10235378A
Other languages
Japanese (ja)
Other versions
JPS5839437B2 (en
Inventor
Juichi Takano
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.)
Iwatsu Electric Co Ltd
Original Assignee
Iwatsu Electric Co Ltd
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 Iwatsu Electric Co Ltd filed Critical Iwatsu Electric Co Ltd
Priority to JP10235378A priority Critical patent/JPS5839437B2/en
Publication of JPS5530207A publication Critical patent/JPS5530207A/en
Publication of JPS5839437B2 publication Critical patent/JPS5839437B2/en
Expired 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)

Abstract

PURPOSE:To make it possible to connect easily a main station in a key telephone system not by making the connection of the main station by a mechanical main-wire acquisition switch but by discriminating by the acquisition signal of the main station whether or not the connection is possible. CONSTITUTION:When hook switch 24 is closed by lifting the handset of main station 3, its channels 21 . 22 are connected to directcurrent supply resistances 10 and 11 by contacts 4b-1 and 4b-2 and hook switch detection circuit 29 operates by the information to send out its signal to main-wire acquisition switch 7-1 via line 30. Therefore, the signal is sent, with switch 7-1 closed, to main-wire acquisition holding circuit 31 in parpllel to control part 6, thereby resetting relay 4b. As a result, main station 3 is connected to main wires 8 . 9 by contacts 4b-1 and 4b-2 via relay 5b to make contact 5b-1, thereby maintaining a main-wire acquisition state until the call ends.
JP10235378A 1978-08-24 1978-08-24 This telephone connection method for button telephone equipment Expired JPS5839437B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10235378A JPS5839437B2 (en) 1978-08-24 1978-08-24 This telephone connection method for button telephone equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10235378A JPS5839437B2 (en) 1978-08-24 1978-08-24 This telephone connection method for button telephone equipment

Publications (2)

Publication Number Publication Date
JPS5530207A true JPS5530207A (en) 1980-03-04
JPS5839437B2 JPS5839437B2 (en) 1983-08-30

Family

ID=14325104

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10235378A Expired JPS5839437B2 (en) 1978-08-24 1978-08-24 This telephone connection method for button telephone equipment

Country Status (1)

Country Link
JP (1) JPS5839437B2 (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4801420A (en) * 1985-09-11 1989-01-31 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Process for forming a film
US4822853A (en) * 1985-07-16 1989-04-18 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Amphiphilic polyimide precursor containing c12-c30 hydrophobic groups and langmuir-blodgett films therefrom
US4839219A (en) * 1986-05-20 1989-06-13 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Thin film and device having the same
US4910293A (en) * 1985-11-20 1990-03-20 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Langmuir-Blodgett films of polymers having pendent C10 -C30 hydrocarbon groups
US4987219A (en) * 1986-04-25 1991-01-22 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Copolymeric and amphiphilic polyimide precursor, process for preparing the same and thin film
JPH03133132A (en) * 1989-10-06 1991-06-06 Internatl Business Mach Corp <Ibm> Conductor pattern formation
US5043248A (en) * 1986-09-04 1991-08-27 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Photosensitive amhilphilic high polymers and process for producing them
US5072262A (en) * 1986-03-11 1991-12-10 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Electric-electronic device including polyimide thin film
EP0702270A2 (en) 1994-09-13 1996-03-20 Nippon Zeon Co., Ltd. Photosensitive polyimide resin composition
US6160081A (en) * 1997-10-31 2000-12-12 Nippon Zeon Co., Ltd. Photosensitive polyimide resin composition
US6232032B1 (en) 1998-05-29 2001-05-15 Hitachi Chemical Dupont Microsystems L.L.C. Photosensitive polymer composition, method for forming relief patterns, and electronic parts
US6310135B1 (en) 1995-04-18 2001-10-30 Nippon Zeon Co., Ltd. Polyimide resin composition
US6528231B1 (en) 1999-01-25 2003-03-04 Riken Photosensitive resin composition, printed wiring board, substrate for disposing semiconductor chips, semiconductor device and processes for producing a printed wiring board, a substrate for disposing semiconductor chips and a semiconductor device
US6686106B2 (en) 2000-06-26 2004-02-03 Ube Industries, Ltd. Photosensitive resin compositions, insulating films, and processes for formation of the films
US7150947B2 (en) 2002-05-17 2006-12-19 Hitachi Chemical Dupont Microsystems Ltd. Photosensitive polymer composition, method of forming relief patterns, and electronic equipment
US7892720B2 (en) 2006-03-16 2011-02-22 Asahi Glass Company, Limited Negative photosensitive fluorinated aromatic resin composition
KR20110059867A (en) 2008-10-02 2011-06-07 다이니폰 인사츠 가부시키가이샤 Photosensitive resin composition, article using same, and method for forming negative pattern
US8231959B2 (en) 2004-01-14 2012-07-31 Hitachi Chemical Dupont Microsystems Ltd. Photosensitive polymer composition, method of producing pattern and electronic parts

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4822853A (en) * 1985-07-16 1989-04-18 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Amphiphilic polyimide precursor containing c12-c30 hydrophobic groups and langmuir-blodgett films therefrom
US4988795A (en) * 1985-07-16 1991-01-29 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Amphiphilic polyimide precursor and process for preparing the same from fatty-substituted polyamide-acids
US4801420A (en) * 1985-09-11 1989-01-31 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Process for forming a film
US4910293A (en) * 1985-11-20 1990-03-20 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Langmuir-Blodgett films of polymers having pendent C10 -C30 hydrocarbon groups
US5072262A (en) * 1986-03-11 1991-12-10 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Electric-electronic device including polyimide thin film
US4987219A (en) * 1986-04-25 1991-01-22 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Copolymeric and amphiphilic polyimide precursor, process for preparing the same and thin film
US4839219A (en) * 1986-05-20 1989-06-13 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Thin film and device having the same
US5043248A (en) * 1986-09-04 1991-08-27 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Photosensitive amhilphilic high polymers and process for producing them
JPH03133132A (en) * 1989-10-06 1991-06-06 Internatl Business Mach Corp <Ibm> Conductor pattern formation
EP0702270A2 (en) 1994-09-13 1996-03-20 Nippon Zeon Co., Ltd. Photosensitive polyimide resin composition
US5777068A (en) * 1994-09-13 1998-07-07 Nippon Zeon Co., Ltd. Photosensitive polyimide resin composition
US6734248B2 (en) 1995-04-18 2004-05-11 Nippon Zeon Co., Ltd. Pattern forming process using polyimide resin composition
US6310135B1 (en) 1995-04-18 2001-10-30 Nippon Zeon Co., Ltd. Polyimide resin composition
US6743851B2 (en) 1995-04-18 2004-06-01 Nippon Zeon Co., Ltd. Polyimide film
US6160081A (en) * 1997-10-31 2000-12-12 Nippon Zeon Co., Ltd. Photosensitive polyimide resin composition
US6365306B2 (en) 1998-05-29 2002-04-02 Hitachi Chemical Dupont Microsystems L.L.C. Photosensitive polymer composition, method for forming relief patterns, and electronic parts
US6232032B1 (en) 1998-05-29 2001-05-15 Hitachi Chemical Dupont Microsystems L.L.C. Photosensitive polymer composition, method for forming relief patterns, and electronic parts
US6528231B1 (en) 1999-01-25 2003-03-04 Riken Photosensitive resin composition, printed wiring board, substrate for disposing semiconductor chips, semiconductor device and processes for producing a printed wiring board, a substrate for disposing semiconductor chips and a semiconductor device
US6709804B2 (en) 1999-01-25 2004-03-23 Riken Printed wiring board and semiconductor device and processes to prepare the same
US6686106B2 (en) 2000-06-26 2004-02-03 Ube Industries, Ltd. Photosensitive resin compositions, insulating films, and processes for formation of the films
US7150947B2 (en) 2002-05-17 2006-12-19 Hitachi Chemical Dupont Microsystems Ltd. Photosensitive polymer composition, method of forming relief patterns, and electronic equipment
US7851128B2 (en) 2002-05-17 2010-12-14 Hitachi Chemical Dupont Microsystems Ltd. Photosensitive polymer composition, method of forming relief patterns, and electronic equipment
US8304149B2 (en) 2002-05-17 2012-11-06 Hitachi Chemical Dupont Microsystems Ltd. Photosensitive polymer composition, method of forming relief patterns, and electronic equipment
US8231959B2 (en) 2004-01-14 2012-07-31 Hitachi Chemical Dupont Microsystems Ltd. Photosensitive polymer composition, method of producing pattern and electronic parts
US8852726B2 (en) 2004-01-14 2014-10-07 Hitachi Chemical Dupont Microsystems Ltd. Photosensitive polymer composition, method of producing pattern and electronic parts
US7892720B2 (en) 2006-03-16 2011-02-22 Asahi Glass Company, Limited Negative photosensitive fluorinated aromatic resin composition
KR20110059867A (en) 2008-10-02 2011-06-07 다이니폰 인사츠 가부시키가이샤 Photosensitive resin composition, article using same, and method for forming negative pattern

Also Published As

Publication number Publication date
JPS5839437B2 (en) 1983-08-30

Similar Documents

Publication Publication Date Title
JPS5530207A (en) Main station connection system of key telephone system
GB1466162A (en) Telecommunications systems
GB777184A (en) Improvements in or relating to telephone systems
GB1505926A (en) Telephone line circuit
JPS5772452A (en) Telephone set with speaker receiving function
GB1272723A (en) Key telephone systems using pushbutton or rotary dials
JPS5563157A (en) Automatic answering telephone system
JPS5787656A (en) Loudspeaker transmitting system
US4868847A (en) Telephone intercom device
GB1349585A (en) Subscriber unit for a telecommunications system
JPS5787657A (en) Loudspeaker telephone system
GB1369669A (en) Line circuits for communication systems
GB677894A (en) Improvements in or relating to intercommunication telephone systems
JPS6424554A (en) Conference telephone device
JPS5758452A (en) Button telephone device
JPS5617561A (en) Talking device
JPS56123140A (en) Cordless telephone set
JPS6453676A (en) Terminal calling control device
GB1436460A (en) Telephone systems
JPS56123142A (en) Cordless telephone set
JPS55137754A (en) Switch of telephone transmitter circuit
JPS6489628A (en) Radio communication system
JPS57190450A (en) Privacy system for push-button dial telephone set
JPS5776965A (en) Emergency reception control system
JPS5493905A (en) Speech circuit for key telephone system