JPS6444145A - Data circuit test system - Google Patents
Data circuit test systemInfo
- Publication number
- JPS6444145A JPS6444145A JP62201115A JP20111587A JPS6444145A JP S6444145 A JPS6444145 A JP S6444145A JP 62201115 A JP62201115 A JP 62201115A JP 20111587 A JP20111587 A JP 20111587A JP S6444145 A JPS6444145 A JP S6444145A
- Authority
- JP
- Japan
- Prior art keywords
- data
- loopback
- test equipment
- test
- 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.)
- Pending
Links
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
PURPOSE:To conduct loopback test simply by providing a data circuit simple test equipment controlled similarly as a digital data subscriber circuit device to an exchange so as to allow an optional data terminal equipment to dial a subscriber number. CONSTITUTION:A time division switch 3 of an exchange is provided with a data circuit simple test equipment 4 controlled equally as digital data subscriber circuit devices 21, 22. The test equipment 4 demultiplexes the data signal of plural channels to be multiplexed from the switch 3 and uses a loopback circuit to apply loopback and sends the signal to the switch 3 after applying multiplexing again. Thus, plural subscriber numbers are assigned to the test equipment 4 and the test equipment 4 is called from an optional data terminal equipment to apply loopback test by one set of the data terminal equipment.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62201115A JPS6444145A (en) | 1987-08-12 | 1987-08-12 | Data circuit test system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62201115A JPS6444145A (en) | 1987-08-12 | 1987-08-12 | Data circuit test system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6444145A true JPS6444145A (en) | 1989-02-16 |
Family
ID=16435650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62201115A Pending JPS6444145A (en) | 1987-08-12 | 1987-08-12 | Data circuit test system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6444145A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6229341A (en) * | 1985-07-31 | 1987-02-07 | Fujitsu Ltd | Loop back test system of data terminal network |
-
1987
- 1987-08-12 JP JP62201115A patent/JPS6444145A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6229341A (en) * | 1985-07-31 | 1987-02-07 | Fujitsu Ltd | Loop back test system of data terminal network |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES470733A1 (en) | Method and apparatus for signaling and framing in a time division multiplex communication system | |
JPS6457844A (en) | Digital signal multiplexer | |
JPS57107664A (en) | Electronic button telephone set | |
JPS6444145A (en) | Data circuit test system | |
JPS546403A (en) | Data transmission equipment | |
JPS5474616A (en) | Tester for digital incoming line | |
ATE118137T1 (en) | CIRCUIT ARRANGEMENT FOR ADDING A SERVICE CHANNEL TO A MESSAGE TRANSMISSION SYSTEM. | |
GB8610578D0 (en) | Testing digital telecommunications exchange equipment | |
JPS5212503A (en) | Multiplex loop transmission system | |
JPS6413900A (en) | Time division light exchange device using wave-length division multiplex | |
ES378137A1 (en) | Method for the signal exchange in telecommunication,particularly telephone exchanges employing time-division multiplexing | |
IE45958L (en) | Telecommunications apparatus | |
EP0238468A3 (en) | A communication system | |
JPS5558658A (en) | Subscriber's line telephone transmission system | |
IT1087699B (en) | APPARATUS THAT WORKS ACCORDING TO THE IMPULSE CODE MODULATION OR SIMILAR DIGITIZATION PROCEDURE AND ACCORDING TO THE TIME DIVISION MULTIPLEX PROCESS FOR THE PROCESSING OF THE INFORMATION OF MULTIPLE TELEPHONE CHANNELS | |
JPS55105491A (en) | Data exchange system | |
JPS53123013A (en) | Time-division switching network of multiple connection | |
JPS56160168A (en) | Exchange system | |
JPS5733889A (en) | Signal processing system | |
ES464989A1 (en) | Concentration network for a time division multiplex telephone exchange with pulse amplitude modulation | |
JPS56110398A (en) | Time slot replacement system | |
JPS574691A (en) | Remote control time-division switchboard | |
JPS6451744A (en) | Test loopback control circuit for data line terminator | |
JPS56165452A (en) | Digital multiplex trunk test system | |
JPS5657384A (en) | Continuity test system of channel |