JPS51113521A - Indication of lockout state of subscriber's line - Google Patents

Indication of lockout state of subscriber's line

Info

Publication number
JPS51113521A
JPS51113521A JP3800975A JP3800975A JPS51113521A JP S51113521 A JPS51113521 A JP S51113521A JP 3800975 A JP3800975 A JP 3800975A JP 3800975 A JP3800975 A JP 3800975A JP S51113521 A JPS51113521 A JP S51113521A
Authority
JP
Japan
Prior art keywords
subscriber
indication
line
lockout state
lockout
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
JP3800975A
Other languages
Japanese (ja)
Inventor
Sadayuki Hiraki
Katsuyoshi Miyazaki
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 JP3800975A priority Critical patent/JPS51113521A/en
Publication of JPS51113521A publication Critical patent/JPS51113521A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/08—Indicating faults in circuits or apparatus
    • H04M3/14—Signalling existence of persistent "off-hook" condition

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)

Abstract

PURPOSE:To enable detection and indication of lockout state of each subscriber's line.
JP3800975A 1975-03-31 1975-03-31 Indication of lockout state of subscriber's line Pending JPS51113521A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3800975A JPS51113521A (en) 1975-03-31 1975-03-31 Indication of lockout state of subscriber's line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3800975A JPS51113521A (en) 1975-03-31 1975-03-31 Indication of lockout state of subscriber's line

Publications (1)

Publication Number Publication Date
JPS51113521A true JPS51113521A (en) 1976-10-06

Family

ID=12513566

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3800975A Pending JPS51113521A (en) 1975-03-31 1975-03-31 Indication of lockout state of subscriber's line

Country Status (1)

Country Link
JP (1) JPS51113521A (en)

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