JPS5725759A - Ring tripping circuit - Google Patents

Ring tripping circuit

Info

Publication number
JPS5725759A
JPS5725759A JP10078980A JP10078980A JPS5725759A JP S5725759 A JPS5725759 A JP S5725759A JP 10078980 A JP10078980 A JP 10078980A JP 10078980 A JP10078980 A JP 10078980A JP S5725759 A JPS5725759 A JP S5725759A
Authority
JP
Japan
Prior art keywords
signal
relay
voltage
holding circuit
called 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
JP10078980A
Other languages
English (en)
Other versions
JPH02907B2 (ja
Inventor
Eiji Minamitani
Takuto Kojima
Yukio Kobayashi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP10078980A priority Critical patent/JPS5725759A/ja
Publication of JPS5725759A publication Critical patent/JPS5725759A/ja
Publication of JPH02907B2 publication Critical patent/JPH02907B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/02—Calling substations, e.g. by ringing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
JP10078980A 1980-07-23 1980-07-23 Ring tripping circuit Granted JPS5725759A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10078980A JPS5725759A (en) 1980-07-23 1980-07-23 Ring tripping circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10078980A JPS5725759A (en) 1980-07-23 1980-07-23 Ring tripping circuit

Publications (2)

Publication Number Publication Date
JPS5725759A true JPS5725759A (en) 1982-02-10
JPH02907B2 JPH02907B2 (ja) 1990-01-09

Family

ID=14283199

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10078980A Granted JPS5725759A (en) 1980-07-23 1980-07-23 Ring tripping circuit

Country Status (1)

Country Link
JP (1) JPS5725759A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5944160A (ja) * 1982-07-30 1984-03-12 コンパニ　アンジュストリエル　デ　テレコミュニカシオン　セイテーアルカテル リンギング中のル−プ検出装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5291614A (en) * 1976-01-28 1977-08-02 Fujitsu Ltd Correcting quality of printed characters in printer
JPS5391614A (en) * 1977-01-24 1978-08-11 Nec Corp Ring trip circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5291614A (en) * 1976-01-28 1977-08-02 Fujitsu Ltd Correcting quality of printed characters in printer
JPS5391614A (en) * 1977-01-24 1978-08-11 Nec Corp Ring trip circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5944160A (ja) * 1982-07-30 1984-03-12 コンパニ　アンジュストリエル　デ　テレコミュニカシオン　セイテーアルカテル リンギング中のル−プ検出装置

Also Published As

Publication number Publication date
JPH02907B2 (ja) 1990-01-09

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