JPS5435603A - State indication system of push-button telephone - Google Patents

State indication system of push-button telephone

Info

Publication number
JPS5435603A
JPS5435603A JP10188677A JP10188677A JPS5435603A JP S5435603 A JPS5435603 A JP S5435603A JP 10188677 A JP10188677 A JP 10188677A JP 10188677 A JP10188677 A JP 10188677A JP S5435603 A JPS5435603 A JP S5435603A
Authority
JP
Japan
Prior art keywords
push
state indication
indication system
button telephone
modes
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
JP10188677A
Other languages
Japanese (ja)
Other versions
JPS5629424B2 (en
Inventor
Yoshiichi Sano
Takao Yamamoto
Taiji Sato
Shinichi Shibata
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
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP10188677A priority Critical patent/JPS5435603A/en
Publication of JPS5435603A publication Critical patent/JPS5435603A/en
Publication of JPS5629424B2 publication Critical patent/JPS5629424B2/ja
Granted 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
    • H04M1/82—Line monitoring circuits for call progress or status discrimination

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Audible And Visible Signals (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:To double the line state indication for increased discriminator, by making the lighting modes of indication elements into a plural number of modes.
JP10188677A 1977-08-25 1977-08-25 State indication system of push-button telephone Granted JPS5435603A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10188677A JPS5435603A (en) 1977-08-25 1977-08-25 State indication system of push-button telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10188677A JPS5435603A (en) 1977-08-25 1977-08-25 State indication system of push-button telephone

Publications (2)

Publication Number Publication Date
JPS5435603A true JPS5435603A (en) 1979-03-15
JPS5629424B2 JPS5629424B2 (en) 1981-07-08

Family

ID=14312409

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10188677A Granted JPS5435603A (en) 1977-08-25 1977-08-25 State indication system of push-button telephone

Country Status (1)

Country Link
JP (1) JPS5435603A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02305295A (en) * 1989-05-19 1990-12-18 Matsushita Electric Ind Co Ltd Key telephone system
JPH0444087U (en) * 1990-08-10 1992-04-14
JPH07107528A (en) * 1993-10-07 1995-04-21 Nec Corp Key telephone system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS492410A (en) * 1972-04-18 1974-01-10

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS492410A (en) * 1972-04-18 1974-01-10

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02305295A (en) * 1989-05-19 1990-12-18 Matsushita Electric Ind Co Ltd Key telephone system
JPH0444087U (en) * 1990-08-10 1992-04-14
JPH07107528A (en) * 1993-10-07 1995-04-21 Nec Corp Key telephone system

Also Published As

Publication number Publication date
JPS5629424B2 (en) 1981-07-08

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