JPS6444145A - Data circuit test system - Google Patents

Data circuit test system

Info

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
Application number
JP62201115A
Other languages
Japanese (ja)
Inventor
Masahito Fujioka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP62201115A priority Critical patent/JPS6444145A/en
Publication of JPS6444145A publication Critical patent/JPS6444145A/en
Pending legal-status Critical Current

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.
JP62201115A 1987-08-12 1987-08-12 Data circuit test system Pending JPS6444145A (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
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