JPS57133752A - Test system for extension - Google Patents

Test system for extension

Info

Publication number
JPS57133752A
JPS57133752A JP1924381A JP1924381A JPS57133752A JP S57133752 A JPS57133752 A JP S57133752A JP 1924381 A JP1924381 A JP 1924381A JP 1924381 A JP1924381 A JP 1924381A JP S57133752 A JPS57133752 A JP S57133752A
Authority
JP
Japan
Prior art keywords
extension
test
circuit
lead
flows
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
Application number
JP1924381A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6359574B2 (enrdf_load_stackoverflow
Inventor
Hiroshi Sato
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
Nippon Electric Co Ltd
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, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP1924381A priority Critical patent/JPS57133752A/ja
Publication of JPS57133752A publication Critical patent/JPS57133752A/ja
Publication of JPS6359574B2 publication Critical patent/JPS6359574B2/ja
Granted legal-status Critical Current

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
    • H04M3/24—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)
  • Monitoring And Testing Of Exchanges (AREA)
JP1924381A 1981-02-12 1981-02-12 Test system for extension Granted JPS57133752A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1924381A JPS57133752A (en) 1981-02-12 1981-02-12 Test system for extension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1924381A JPS57133752A (en) 1981-02-12 1981-02-12 Test system for extension

Publications (2)

Publication Number Publication Date
JPS57133752A true JPS57133752A (en) 1982-08-18
JPS6359574B2 JPS6359574B2 (enrdf_load_stackoverflow) 1988-11-21

Family

ID=11993959

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1924381A Granted JPS57133752A (en) 1981-02-12 1981-02-12 Test system for extension

Country Status (1)

Country Link
JP (1) JPS57133752A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6149547A (ja) * 1984-08-18 1986-03-11 Fujitsu Ltd 二重化ハイウェイ診断方式

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6149547A (ja) * 1984-08-18 1986-03-11 Fujitsu Ltd 二重化ハイウェイ診断方式

Also Published As

Publication number Publication date
JPS6359574B2 (enrdf_load_stackoverflow) 1988-11-21

Similar Documents

Publication Publication Date Title
ES500526A0 (es) Sistema de comunicacion digital
ATE153631T1 (de) Fernbedienungssystem für aufzugsanlage
PT89159A (pt) Sistema digital de comunicacao telefonica
JPS57133752A (en) Test system for extension
JPS574636A (en) Composite exchange system
JPS53138612A (en) Trunk connection control system
JPS5726947A (en) Remote test system for data communication line
JPS57176853A (en) Redundant regenerative type optical communication system
JPS6484941A (en) System for identifying and transmitting data/voice
JPS56164643A (en) By-pass system for optical data highway
JPS57182263A (en) Converting method for toll receipt system of toll road
JPS5795744A (en) Automatic line switching device for data communication device
JPS5779792A (en) Connecting system between remote line concentration stations
JPS5741062A (en) Information transfer system
JPS57182264A (en) Converting method for toll receipt system of toll road
JPS5375708A (en) Data communication system providing signal transfer function
JPS5662493A (en) Exchanging system for digital subscriber
JPS57182265A (en) Converting method for toll receipt system of toll road
JPS55136743A (en) Nomitor and test system of pcm terminal station unit
JPS57112154A (en) Broadcasting system for loop switching network
JPS5689191A (en) Select signal relaying system
JPS5679549A (en) Loop type data highway system
JPS6472652A (en) Test monitoring and controlling system
JPS57171858A (en) Concealing system between terminal equipments
JPS5342508A (en) Automatic test system for telephone lines