JPS6444665A - Public telephone remote monitor system - Google Patents

Public telephone remote monitor system

Info

Publication number
JPS6444665A
JPS6444665A JP20148487A JP20148487A JPS6444665A JP S6444665 A JPS6444665 A JP S6444665A JP 20148487 A JP20148487 A JP 20148487A JP 20148487 A JP20148487 A JP 20148487A JP S6444665 A JPS6444665 A JP S6444665A
Authority
JP
Japan
Prior art keywords
remote monitor
telephone
trouble
public
always
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
JP20148487A
Other languages
Japanese (ja)
Other versions
JPH0552108B2 (en
Inventor
Junichi Nakagawa
Yuji Takamura
Osamu Miki
Shigekazu Matsushita
Shinichiro Aoto
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP20148487A priority Critical patent/JPS6444665A/en
Publication of JPS6444665A publication Critical patent/JPS6444665A/en
Publication of JPH0552108B2 publication Critical patent/JPH0552108B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Monitoring And Testing Of Exchanges (AREA)

Abstract

PURPOSE:To shorten trouble time to increase receipts and reduce the dispatch operation time and the number of persons for trouble recovery by always performing remote monitor to read idle, calling, and busy states. CONSTITUTION:A public telephone remote monitor device 101 always measures the inter-line voltage of a telephone subscriber's line to discriminate states of all public telephone sets connected to this subscriber's line. Public telephones are roughly divided into four by idle, calling, busy, and trouble states, and the state of each telephone is always monitored with respect to the voltage change from the voltage between telephone lines in the idle state. Thus, remote monitor of several hundred public telephones is always performed with one scan adapter, and public telephones are prevented from being left in trouble for a long time.
JP20148487A 1987-08-12 1987-08-12 Public telephone remote monitor system Granted JPS6444665A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20148487A JPS6444665A (en) 1987-08-12 1987-08-12 Public telephone remote monitor system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20148487A JPS6444665A (en) 1987-08-12 1987-08-12 Public telephone remote monitor system

Publications (2)

Publication Number Publication Date
JPS6444665A true JPS6444665A (en) 1989-02-17
JPH0552108B2 JPH0552108B2 (en) 1993-08-04

Family

ID=16441829

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20148487A Granted JPS6444665A (en) 1987-08-12 1987-08-12 Public telephone remote monitor system

Country Status (1)

Country Link
JP (1) JPS6444665A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5442223A (en) * 1990-10-17 1995-08-15 Nippondenso Co., Ltd. Semiconductor device with stress relief

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57143969A (en) * 1981-02-28 1982-09-06 Anritsu Corp Monitoring method for fault of public telephone and fault signal sending circuit and fault signal monitoring circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57143969A (en) * 1981-02-28 1982-09-06 Anritsu Corp Monitoring method for fault of public telephone and fault signal sending circuit and fault signal monitoring circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5442223A (en) * 1990-10-17 1995-08-15 Nippondenso Co., Ltd. Semiconductor device with stress relief

Also Published As

Publication number Publication date
JPH0552108B2 (en) 1993-08-04

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