JPS52127003A - Communication control device for switching lines - Google Patents

Communication control device for switching lines

Info

Publication number
JPS52127003A
JPS52127003A JP4354976A JP4354976A JPS52127003A JP S52127003 A JPS52127003 A JP S52127003A JP 4354976 A JP4354976 A JP 4354976A JP 4354976 A JP4354976 A JP 4354976A JP S52127003 A JPS52127003 A JP S52127003A
Authority
JP
Japan
Prior art keywords
control device
communication control
switching lines
switching
lines
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
JP4354976A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5528633B2 (cs
Inventor
Masamichi Koyama
Nobuhiro Koyama
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP4354976A priority Critical patent/JPS52127003A/ja
Publication of JPS52127003A publication Critical patent/JPS52127003A/ja
Publication of JPS5528633B2 publication Critical patent/JPS5528633B2/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
    • H04M3/26—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
JP4354976A 1976-04-19 1976-04-19 Communication control device for switching lines Granted JPS52127003A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4354976A JPS52127003A (en) 1976-04-19 1976-04-19 Communication control device for switching lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4354976A JPS52127003A (en) 1976-04-19 1976-04-19 Communication control device for switching lines

Publications (2)

Publication Number Publication Date
JPS52127003A true JPS52127003A (en) 1977-10-25
JPS5528633B2 JPS5528633B2 (cs) 1980-07-29

Family

ID=12666827

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4354976A Granted JPS52127003A (en) 1976-04-19 1976-04-19 Communication control device for switching lines

Country Status (1)

Country Link
JP (1) JPS52127003A (cs)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55120255A (en) * 1979-03-08 1980-09-16 Nec Corp Communication controller
JPS58173958U (ja) * 1983-04-07 1983-11-21 株式会社田村電機製作所 故障報知式公衆電話機
JPS5984956U (ja) * 1983-09-24 1984-06-08 株式会社田村電機製作所 公衆電話機の故障監視装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55120255A (en) * 1979-03-08 1980-09-16 Nec Corp Communication controller
JPS58173958U (ja) * 1983-04-07 1983-11-21 株式会社田村電機製作所 故障報知式公衆電話機
JPS5984956U (ja) * 1983-09-24 1984-06-08 株式会社田村電機製作所 公衆電話機の故障監視装置

Also Published As

Publication number Publication date
JPS5528633B2 (cs) 1980-07-29

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