JPS5577267A - Channel test system - Google Patents
Channel test systemInfo
- Publication number
- JPS5577267A JPS5577267A JP15169478A JP15169478A JPS5577267A JP S5577267 A JPS5577267 A JP S5577267A JP 15169478 A JP15169478 A JP 15169478A JP 15169478 A JP15169478 A JP 15169478A JP S5577267 A JPS5577267 A JP S5577267A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- highway
- numeric code
- channel
- sent out
- 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
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
-
- 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
- H04M3/244—Arrangements for supervision, monitoring or testing with provision for checking the normal operation for multiplex systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Abstract
PURPOSE:To eliminate the need to install special hardware for a test by sending a fixed signal from a signal source to a channel highway and then by testing a channel according to whether this signal can be received and detected within a certain time. CONSTITUTION:Once a control signal is supplied from central controller 19, sound signal generator 18 sends a multi-frequency signal to a fixed time slot. This signal is temporarity stored in buffer memory 16 by way of selector 17 and then sent out to the fixed time slot of receiving channel highway HR2 by signal distributor circuit 12. By receiving this signal, multi-frequency receiver 15n converts it into a numeric code and reconverts it into a series signal, which is sent out to highway DH. This numeric code is sent to central controller 19 by way of highway DH. Here, if a touble occurs to highway HR2, controller 19 can not receive a corresponding numeric code from receiver 15n even after the certain time passes, so that it will be judged that the highway is in trouble.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15169478A JPS5577267A (en) | 1978-12-07 | 1978-12-07 | Channel test system |
US06/100,879 US4320497A (en) | 1978-12-07 | 1979-12-06 | Method for testing communication paths |
CA341,469A CA1130898A (en) | 1978-12-07 | 1979-12-07 | Method for testing communication paths |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15169478A JPS5577267A (en) | 1978-12-07 | 1978-12-07 | Channel test system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5577267A true JPS5577267A (en) | 1980-06-10 |
Family
ID=15524213
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15169478A Pending JPS5577267A (en) | 1978-12-07 | 1978-12-07 | Channel test system |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPS5577267A (en) |
CA (1) | CA1130898A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5842395A (en) * | 1981-09-08 | 1983-03-11 | Nec Corp | Realizing method for test trunk function |
JPS61198952A (en) * | 1985-02-28 | 1986-09-03 | Toshiba Corp | Test system of time division exchange |
-
1978
- 1978-12-07 JP JP15169478A patent/JPS5577267A/en active Pending
-
1979
- 1979-12-07 CA CA341,469A patent/CA1130898A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5842395A (en) * | 1981-09-08 | 1983-03-11 | Nec Corp | Realizing method for test trunk function |
JPH0214828B2 (en) * | 1981-09-08 | 1990-04-10 | Nippon Electric Co | |
JPS61198952A (en) * | 1985-02-28 | 1986-09-03 | Toshiba Corp | Test system of time division exchange |
Also Published As
Publication number | Publication date |
---|---|
CA1130898A (en) | 1982-08-31 |
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