JPS6155304B2 - - Google Patents

Info

Publication number
JPS6155304B2
JPS6155304B2 JP52101887A JP10188777A JPS6155304B2 JP S6155304 B2 JPS6155304 B2 JP S6155304B2 JP 52101887 A JP52101887 A JP 52101887A JP 10188777 A JP10188777 A JP 10188777A JP S6155304 B2 JPS6155304 B2 JP S6155304B2
Authority
JP
Japan
Prior art keywords
call
signal
main device
line
button 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.)
Expired
Application number
JP52101887A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5435604A (en
Inventor
Yoshiichi Sano
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
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 Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
Priority to JP10188777A priority Critical patent/JPS5435604A/ja
Publication of JPS5435604A publication Critical patent/JPS5435604A/ja
Publication of JPS6155304B2 publication Critical patent/JPS6155304B2/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)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP10188777A 1977-08-25 1977-08-25 Ringing system of push-button telephone set Granted JPS5435604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10188777A JPS5435604A (en) 1977-08-25 1977-08-25 Ringing system of push-button telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10188777A JPS5435604A (en) 1977-08-25 1977-08-25 Ringing system of push-button telephone set

Publications (2)

Publication Number Publication Date
JPS5435604A JPS5435604A (en) 1979-03-15
JPS6155304B2 true JPS6155304B2 (enrdf_load_stackoverflow) 1986-11-27

Family

ID=14312436

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10188777A Granted JPS5435604A (en) 1977-08-25 1977-08-25 Ringing system of push-button telephone set

Country Status (1)

Country Link
JP (1) JPS5435604A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5853290A (ja) * 1981-09-25 1983-03-29 Taiko Denki Seisakusho:Kk ボタン電話装置における着信表示方式
JPS5862956A (ja) * 1981-10-09 1983-04-14 Nippon Telegr & Teleph Corp <Ntt> ボタン電話機の着信音送出回路

Also Published As

Publication number Publication date
JPS5435604A (en) 1979-03-15

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