JPH0157861B2 - - Google Patents

Info

Publication number
JPH0157861B2
JPH0157861B2 JP56028765A JP2876581A JPH0157861B2 JP H0157861 B2 JPH0157861 B2 JP H0157861B2 JP 56028765 A JP56028765 A JP 56028765A JP 2876581 A JP2876581 A JP 2876581A JP H0157861 B2 JPH0157861 B2 JP H0157861B2
Authority
JP
Japan
Prior art keywords
current
battery
switch
line current
fault
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
JP56028765A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57143969A (en
Inventor
Hiroyuki Takahashi
Takao Saito
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.)
Anritsu Corp
Original Assignee
Anritsu 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 Anritsu Corp filed Critical Anritsu Corp
Priority to JP2876581A priority Critical patent/JPS57143969A/ja
Publication of JPS57143969A publication Critical patent/JPS57143969A/ja
Publication of JPH0157861B2 publication Critical patent/JPH0157861B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/24—Arrangements for supervision, monitoring or testing with provision for checking the normal operation
    • H04M3/248—Arrangements for supervision, monitoring or testing with provision for checking the normal operation for metering arrangements or prepayment telephone systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Prepayment Telephone Systems (AREA)
JP2876581A 1981-02-28 1981-02-28 Monitoring method for fault of public telephone and fault signal sending circuit and fault signal monitoring circuit Granted JPS57143969A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2876581A JPS57143969A (en) 1981-02-28 1981-02-28 Monitoring method for fault of public telephone and fault signal sending circuit and fault signal monitoring circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2876581A JPS57143969A (en) 1981-02-28 1981-02-28 Monitoring method for fault of public telephone and fault signal sending circuit and fault signal monitoring circuit

Publications (2)

Publication Number Publication Date
JPS57143969A JPS57143969A (en) 1982-09-06
JPH0157861B2 true JPH0157861B2 (ko) 1989-12-07

Family

ID=12257494

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2876581A Granted JPS57143969A (en) 1981-02-28 1981-02-28 Monitoring method for fault of public telephone and fault signal sending circuit and fault signal monitoring circuit

Country Status (1)

Country Link
JP (1) JPS57143969A (ko)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4567325A (en) * 1983-12-30 1986-01-28 At&T Technologies Inc. Controller for a coin telephone set
JPS6437153A (en) * 1987-08-03 1989-02-07 Nippon Telegraph & Telephone Trouble reporting and recovering device for public telephone
JPS6444665A (en) * 1987-08-12 1989-02-17 Nippon Telegraph & Telephone Public telephone remote monitor system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5578663A (en) * 1978-12-08 1980-06-13 Oki Electric Ind Co Ltd Remote control system for public telephone set

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5740610Y2 (ko) * 1976-04-30 1982-09-06

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5578663A (en) * 1978-12-08 1980-06-13 Oki Electric Ind Co Ltd Remote control system for public telephone set

Also Published As

Publication number Publication date
JPS57143969A (en) 1982-09-06

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