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JPS6481594A - Key telephone set - Google Patents

Key telephone set

Info

Publication number
JPS6481594A
JPS6481594A JP62239585A JP23958587A JPS6481594A JP S6481594 A JPS6481594 A JP S6481594A JP 62239585 A JP62239585 A JP 62239585A JP 23958587 A JP23958587 A JP 23958587A JP S6481594 A JPS6481594 A JP S6481594A
Authority
JP
Japan
Prior art keywords
line
data
talking
terminal equipment
identification signal
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.)
Pending
Application number
JP62239585A
Other languages
English (en)
Inventor
Yasunobu Nakayama
Taiji Sato
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP62239585A priority Critical patent/JPS6481594A/ja
Priority to KR1019880011839A priority patent/KR910005472B1/ko
Priority to CA000578318A priority patent/CA1288185C/en
Priority to US07/248,151 priority patent/US4932043A/en
Publication of JPS6481594A publication Critical patent/JPS6481594A/ja
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • 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
    • H04M9/003—Transmission of control signals from or to the key telephone set; signalling equipment at key telephone set, e.g. keyboard or display equipment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/442—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Telephonic Communication Services (AREA)
JP62239585A 1987-09-24 1987-09-24 Key telephone set Pending JPS6481594A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP62239585A JPS6481594A (en) 1987-09-24 1987-09-24 Key telephone set
KR1019880011839A KR910005472B1 (ko) 1987-09-24 1988-09-14 버튼전화장치
CA000578318A CA1288185C (en) 1987-09-24 1988-09-23 Apparatus for controlling key telephone station set in key telephone system
US07/248,151 US4932043A (en) 1987-09-24 1988-09-23 Apparatus for controlling key telephone station set in key telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62239585A JPS6481594A (en) 1987-09-24 1987-09-24 Key telephone set

Publications (1)

Publication Number Publication Date
JPS6481594A true JPS6481594A (en) 1989-03-27

Family

ID=17046975

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62239585A Pending JPS6481594A (en) 1987-09-24 1987-09-24 Key telephone set

Country Status (4)

Country Link
US (1) US4932043A (ja)
JP (1) JPS6481594A (ja)
KR (1) KR910005472B1 (ja)
CA (1) CA1288185C (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2059883C (en) * 1991-01-24 1995-08-08 Isaku Komuro Key telephone system provided with telephone sets connectable to add-on modules
CA2068009C (en) * 1991-08-19 1998-05-19 Richard Norman Ames System for decentralizing uplink network control and minimizing overhead in radio frequency data communications network
DE19507866C2 (de) * 1995-03-08 1997-08-07 Philips Patentverwaltung Mobilfunkübertragungssystem mit integrierter Meßeinrichtung zum Ausmessen des Funkversorgungsbereichs

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1018270A (en) * 1972-05-23 1977-09-27 Federico R. Laliccia Key telephone system using time division and space division control
JPS58195393A (ja) * 1982-05-10 1983-11-14 Nec Corp ボタン電話装置
JPS58213597A (ja) * 1982-06-05 1983-12-12 Nitsuko Ltd ボタン電話装置

Also Published As

Publication number Publication date
KR890006024A (ko) 1989-05-18
CA1288185C (en) 1991-08-27
US4932043A (en) 1990-06-05
KR910005472B1 (ko) 1991-07-29

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