JPS57157671A - Automatic testing system for subscriber's circuit - Google Patents
Automatic testing system for subscriber's circuitInfo
- Publication number
- JPS57157671A JPS57157671A JP4331681A JP4331681A JPS57157671A JP S57157671 A JPS57157671 A JP S57157671A JP 4331681 A JP4331681 A JP 4331681A JP 4331681 A JP4331681 A JP 4331681A JP S57157671 A JPS57157671 A JP S57157671A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- subscriber
- lalt
- switchboard
- equipment
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
- H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
- H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
- H04M3/302—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop using modulation techniques for copper pairs
- H04M3/303—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop using modulation techniques for copper pairs and using PCM multiplexers, e.g. pair gain systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Abstract
PURPOSE:To find out previously defaults of a subscriber's circuit of a subscriber's time division switchboard and a subscriber's individual hardware connected to the switchboard by forming pseudo outgoing status from the subscriber's circuit and connecting the outgoing status automatically. CONSTITUTION:A test command is transmitted from a typewriter TTY to a central control equipment CC. When a pass between the 1st subscriber's circuit LC and a test circuit LALT is closed, the circuit LALT tries to make the subscriber's circuit LC generate pseudo outgoing. When detecting a dial tone from the switchboard, the circuit LALT sends a number assigned to a terminal in the time division switch NW accommodation side automatically. The switchboard connects its channel in accordance with the number and the circuit LALT tests the channel in both the upper and lower directions. When a tested result is reported to the equipment CC, the equipment CC starts the same procedure to the succeeding subscriber's circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4331681A JPS57157671A (en) | 1981-03-25 | 1981-03-25 | Automatic testing system for subscriber's circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4331681A JPS57157671A (en) | 1981-03-25 | 1981-03-25 | Automatic testing system for subscriber's circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57157671A true JPS57157671A (en) | 1982-09-29 |
JPS6362150B2 JPS6362150B2 (en) | 1988-12-01 |
Family
ID=12660395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4331681A Granted JPS57157671A (en) | 1981-03-25 | 1981-03-25 | Automatic testing system for subscriber's circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57157671A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61150554A (en) * | 1984-12-25 | 1986-07-09 | Nec Corp | Self-diagnosing system of line trunk circuit |
JPS61230455A (en) * | 1985-04-04 | 1986-10-14 | Nec Corp | Pseudo call testing system |
JPS6384335A (en) * | 1986-09-29 | 1988-04-14 | Nec Corp | Data calling test system |
-
1981
- 1981-03-25 JP JP4331681A patent/JPS57157671A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61150554A (en) * | 1984-12-25 | 1986-07-09 | Nec Corp | Self-diagnosing system of line trunk circuit |
JPS61230455A (en) * | 1985-04-04 | 1986-10-14 | Nec Corp | Pseudo call testing system |
JPS6384335A (en) * | 1986-09-29 | 1988-04-14 | Nec Corp | Data calling test system |
Also Published As
Publication number | Publication date |
---|---|
JPS6362150B2 (en) | 1988-12-01 |
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