JPS5679558A - Monitor system for channel - Google Patents

Monitor system for channel

Info

Publication number
JPS5679558A
JPS5679558A JP15595979A JP15595979A JPS5679558A JP S5679558 A JPS5679558 A JP S5679558A JP 15595979 A JP15595979 A JP 15595979A JP 15595979 A JP15595979 A JP 15595979A JP S5679558 A JPS5679558 A JP S5679558A
Authority
JP
Japan
Prior art keywords
channel
telephone set
transmission line
main device
information transmission
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
JP15595979A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6138911B2 (enrdf_load_stackoverflow
Inventor
Hiroyuki Miyashita
Kazutada Katsukura
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.)
Iwatsu Electric Co Ltd
Original Assignee
Iwatsu 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 Iwatsu Electric Co Ltd filed Critical Iwatsu Electric Co Ltd
Priority to JP15595979A priority Critical patent/JPS5679558A/ja
Publication of JPS5679558A publication Critical patent/JPS5679558A/ja
Publication of JPS6138911B2 publication Critical patent/JPS6138911B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q3/00Selecting arrangements
    • H04Q3/42Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/52Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
    • H04Q3/521Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements using semiconductors in the switching stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP15595979A 1979-11-30 1979-11-30 Monitor system for channel Granted JPS5679558A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15595979A JPS5679558A (en) 1979-11-30 1979-11-30 Monitor system for channel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15595979A JPS5679558A (en) 1979-11-30 1979-11-30 Monitor system for channel

Publications (2)

Publication Number Publication Date
JPS5679558A true JPS5679558A (en) 1981-06-30
JPS6138911B2 JPS6138911B2 (enrdf_load_stackoverflow) 1986-09-01

Family

ID=15617267

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15595979A Granted JPS5679558A (en) 1979-11-30 1979-11-30 Monitor system for channel

Country Status (1)

Country Link
JP (1) JPS5679558A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS6138911B2 (enrdf_load_stackoverflow) 1986-09-01

Similar Documents

Publication Publication Date Title
US4282408A (en) On-hook/off-hook detector circuit
CN209930262U9 (zh) 多功能高速并行的光模块性能测试系统
EP1641150A3 (en) Optical signal quality supervisory device
ATE12014T1 (de) Dienstintegriertes, digitales uebertragungssystem.
JPS5679558A (en) Monitor system for channel
JPS5687948A (en) Optical communication system
JPS56168446A (en) Cordless telephone device
US4179588A (en) Encoder unit for mobile radio transmitter
JPS57103445A (en) Optical communication device
JPS648823A (en) Internal abnormal state diagnosing device for sf6-filled electric apparatus
JPS5792965A (en) Data communication device
JPS57160258A (en) Circuit switching device
JPS56119570A (en) Emergency communication system
JPS5725737A (en) Optical fiber communication device
JPS5480002A (en) Optical transmission/reception system
JPS56156056A (en) Discriminating system for incoming call
JPS54161203A (en) Cordless key telephone system
JPS6486751A (en) Line switching device
JPS5746567A (en) Multifunction telephone set
SU1061266A1 (ru) Устройство передачи сигналов по двухпроводной линии св зи
JPS55140129A (en) Turning back test for optical fiber transmission system
JPS5636260A (en) Order telephone system
JPS54116589A (en) Remote supervisory equipment
JPS55100758A (en) Fault-point orientation system
JPS5693443A (en) Optical communication system