JPS5758495A - Subscriber circuit device - Google Patents

Subscriber circuit device

Info

Publication number
JPS5758495A
JPS5758495A JP13396180A JP13396180A JPS5758495A JP S5758495 A JPS5758495 A JP S5758495A JP 13396180 A JP13396180 A JP 13396180A JP 13396180 A JP13396180 A JP 13396180A JP S5758495 A JPS5758495 A JP S5758495A
Authority
JP
Japan
Prior art keywords
circuit
hook
display
subscriber
output
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
JP13396180A
Other languages
Japanese (ja)
Inventor
Hiroyuki Endo
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 JP13396180A priority Critical patent/JPS5758495A/en
Publication of JPS5758495A publication Critical patent/JPS5758495A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

PURPOSE:To make easy the maintenance and inspection of subscriber circuits, by displaying the state of off-hook during the off-hook of telephone sets, through the connection of a display circuit including the display elements in the output of a detection circuit detecting the off-hook of telephone sets. CONSTITUTION:To the output of a detecting circuit 4 which detects off-hook of a telephone set connected to a battery feed circuit 3 of a time sharing exchanger, a display circuit 6 including light emitting elements 7 as display elements is connected. If a subscriber is in off-hook, a battery current flows to the circuit 3 to activate the detecting circuit 4 and a detected output 8 is given to an interface circuit 5 and the display circuit 6. The circuit 6 is activated with the detected output 8 of the circuit 4 to illuminate the light emitting elements 7, allowing to display that the subscriber circuit is busy. In case of on-hook, no display circuit 6 is activated, thus the maintenance and inspection of the subscribe circuits can be made easy.
JP13396180A 1980-09-25 1980-09-25 Subscriber circuit device Pending JPS5758495A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13396180A JPS5758495A (en) 1980-09-25 1980-09-25 Subscriber circuit device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13396180A JPS5758495A (en) 1980-09-25 1980-09-25 Subscriber circuit device

Publications (1)

Publication Number Publication Date
JPS5758495A true JPS5758495A (en) 1982-04-08

Family

ID=15117119

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13396180A Pending JPS5758495A (en) 1980-09-25 1980-09-25 Subscriber circuit device

Country Status (1)

Country Link
JP (1) JPS5758495A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54104712A (en) * 1978-02-01 1979-08-17 Mitel Canada Ltd Telephone line circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54104712A (en) * 1978-02-01 1979-08-17 Mitel Canada Ltd Telephone line circuit

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