JPS5666959A - Network control system - Google Patents
Network control systemInfo
- Publication number
- JPS5666959A JPS5666959A JP14308379A JP14308379A JPS5666959A JP S5666959 A JPS5666959 A JP S5666959A JP 14308379 A JP14308379 A JP 14308379A JP 14308379 A JP14308379 A JP 14308379A JP S5666959 A JPS5666959 A JP S5666959A
- Authority
- JP
- Japan
- Prior art keywords
- cut
- signal
- section
- subscriber terminal
- network control
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
Landscapes
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Communication Control (AREA)
Abstract
PURPOSE:To detect the cut-off of remote subscriber on the way of various services, by providing the cut-off detection means of subscriber terminals with a network control device. CONSTITUTION:A network control device 2 is provided with a cut-off detection section 12 which detects the frequency component of BT signal delivered from a subscriber terminal 5 having the function of transmission of BT signal transiently at open wire or from an exchanger terminal 4 due to the cut-off of the subscriber terminal 5 on the way. At PB signal input timing 6 and timing 7 between digits, a control section 9 controls a change-over switch 11 via an interface section 15 to connect the said cut-off detection section 12 with a PB signal reception section 13 which receives the PB signal from the subscriber terminal 5 alternately to the line connection section 10, allowing to detect the presence of the frequency component of BT signal at the cut-off detection section 12 and to monitor the cut-off on the way of called subscriber terminal 5.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14308379A JPS5666959A (en) | 1979-11-05 | 1979-11-05 | Network control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14308379A JPS5666959A (en) | 1979-11-05 | 1979-11-05 | Network control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5666959A true JPS5666959A (en) | 1981-06-05 |
Family
ID=15330510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14308379A Pending JPS5666959A (en) | 1979-11-05 | 1979-11-05 | Network control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5666959A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63188673U (en) * | 1987-05-22 | 1988-12-02 |
-
1979
- 1979-11-05 JP JP14308379A patent/JPS5666959A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63188673U (en) * | 1987-05-22 | 1988-12-02 |
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