JPS6489724A - Trouble detecting system for radio telephone system - Google Patents
Trouble detecting system for radio telephone systemInfo
- Publication number
- JPS6489724A JPS6489724A JP62246308A JP24630887A JPS6489724A JP S6489724 A JPS6489724 A JP S6489724A JP 62246308 A JP62246308 A JP 62246308A JP 24630887 A JP24630887 A JP 24630887A JP S6489724 A JPS6489724 A JP S6489724A
- Authority
- JP
- Japan
- Prior art keywords
- trouble
- radio
- control device
- line control
- connecting device
- 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
Abstract
PURPOSE:To detect the generation of a trouble at a radio connecting device with a radio line control device by diagnosing a communication trouble at a radio connecting device by the instruction from the radio line control device side and transmitting the result to the radio line control device side. CONSTITUTION:When a trouble diagnosing action is started, a central control unit 10 of a radio line control device 1 controls a polarity inversion generating part 211 and polling is executed to a radio connecting device 61. At the radio connecting device 61 side, a polarity inversion detecting circuit 311 detects the presence and absence of the polarity inversion, and when the polling is executed, a trouble diagnosing part 311 is activated, and a trouble diagnosing part 321 executes the diagnosis by the loop checking and the voltage checking. A direct current loop opening closing circuit 331, when the trouble is absent, closes a direct current loop, responds to the radio line control device, and when the trouble is present, the direct current loop is released as it is and completion is obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62246308A JP2667406B2 (en) | 1987-09-30 | 1987-09-30 | Wireless telephone system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62246308A JP2667406B2 (en) | 1987-09-30 | 1987-09-30 | Wireless telephone system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6489724A true JPS6489724A (en) | 1989-04-04 |
JP2667406B2 JP2667406B2 (en) | 1997-10-27 |
Family
ID=17146620
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62246308A Expired - Lifetime JP2667406B2 (en) | 1987-09-30 | 1987-09-30 | Wireless telephone system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2667406B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5051740A (en) * | 1989-08-18 | 1991-09-24 | Motorola, Inc. | Paging terminal |
JPH0746658A (en) * | 1993-08-02 | 1995-02-14 | Nec Corp | Mobile object exchange system |
JP2003525551A (en) * | 2000-02-22 | 2003-08-26 | モトローラ・インコーポレイテッド | Method and apparatus for assisting a user in locating a communication source of sufficient capacity |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5725743A (en) * | 1980-07-22 | 1982-02-10 | Hitachi Denshi Ltd | Maintenance system of radio telephone system |
JPS60140943A (en) * | 1983-12-27 | 1985-07-25 | Nec Corp | Line supervising system |
-
1987
- 1987-09-30 JP JP62246308A patent/JP2667406B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5725743A (en) * | 1980-07-22 | 1982-02-10 | Hitachi Denshi Ltd | Maintenance system of radio telephone system |
JPS60140943A (en) * | 1983-12-27 | 1985-07-25 | Nec Corp | Line supervising system |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5051740A (en) * | 1989-08-18 | 1991-09-24 | Motorola, Inc. | Paging terminal |
JPH0746658A (en) * | 1993-08-02 | 1995-02-14 | Nec Corp | Mobile object exchange system |
JP2003525551A (en) * | 2000-02-22 | 2003-08-26 | モトローラ・インコーポレイテッド | Method and apparatus for assisting a user in locating a communication source of sufficient capacity |
Also Published As
Publication number | Publication date |
---|---|
JP2667406B2 (en) | 1997-10-27 |
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