JPS6444665A - Public telephone remote monitor system - Google Patents
Public telephone remote monitor systemInfo
- 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
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.
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)
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)
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 |
-
1987
- 1987-08-12 JP JP20148487A patent/JPS6444665A/en active Granted
Patent Citations (1)
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)
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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