JPS5549061A - Call stop release unit - Google Patents

Call stop release unit

Info

Publication number
JPS5549061A
JPS5549061A JP12316978A JP12316978A JPS5549061A JP S5549061 A JPS5549061 A JP S5549061A JP 12316978 A JP12316978 A JP 12316978A JP 12316978 A JP12316978 A JP 12316978A JP S5549061 A JPS5549061 A JP S5549061A
Authority
JP
Japan
Prior art keywords
call
stop
release unit
exchange side
key
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
JP12316978A
Other languages
Japanese (ja)
Other versions
JPS606592B2 (en
Inventor
Akira Yashiro
Toshio Tanaka
Masao Hayashi
Masaharu Sato
Mitsuo Fukushima
Yuunojiyou Kakehi
Toshikatsu Igari
Mitsuo 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.)
Nippon Telegraph and Telephone Corp
Panasonic Mobile Communications Co Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Matsushita Communication Industrial 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 Nippon Telegraph and Telephone Corp, Matsushita Communication Industrial Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP12316978A priority Critical patent/JPS606592B2/en
Publication of JPS5549061A publication Critical patent/JPS5549061A/en
Publication of JPS606592B2 publication Critical patent/JPS606592B2/en
Expired 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
    • H04M3/12—Marking faulty circuits "busy"; Enabling equipment to disengage itself from faulty circuits ; Using redundant circuits; Response of a circuit, apparatus or system to an error

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To stop and release a call repeatedly from an exchange side by switching a latch relay by a switching element controlled in accordance with a difference in potential when an originating stop operation key is operated at the exchange side. CONSTITUTION:Call stop release unit 1 is connected between channels A and B of arrester elastic spring 2 and either channel is provided with relay contact (r) which connect or disconnect subscriber's telephone set 3 to or from channels A and B when an originating stop operation key in exchange 4 is operated. Then, the contact (r) is switched by driving latch relay R by switching elements T1 and T2 controlled in accordance with difference in potential at the time of the operation of the key. As a result, call stopping operation and call releasing operation can be set freely through remote control from the exchange side.
JP12316978A 1978-10-05 1978-10-05 Call stop release device Expired JPS606592B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12316978A JPS606592B2 (en) 1978-10-05 1978-10-05 Call stop release device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12316978A JPS606592B2 (en) 1978-10-05 1978-10-05 Call stop release device

Publications (2)

Publication Number Publication Date
JPS5549061A true JPS5549061A (en) 1980-04-08
JPS606592B2 JPS606592B2 (en) 1985-02-19

Family

ID=14853883

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12316978A Expired JPS606592B2 (en) 1978-10-05 1978-10-05 Call stop release device

Country Status (1)

Country Link
JP (1) JPS606592B2 (en)

Also Published As

Publication number Publication date
JPS606592B2 (en) 1985-02-19

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