KR880007136U - 모뎀에서 국설 교환기 라인오프시 사설교환기 화중음 감지에 의한 선로 차단 회로 - Google Patents

모뎀에서 국설 교환기 라인오프시 사설교환기 화중음 감지에 의한 선로 차단 회로

Info

Publication number
KR880007136U
KR880007136U KR2019860014520U KR860014520U KR880007136U KR 880007136 U KR880007136 U KR 880007136U KR 2019860014520 U KR2019860014520 U KR 2019860014520U KR 860014520 U KR860014520 U KR 860014520U KR 880007136 U KR880007136 U KR 880007136U
Authority
KR
South Korea
Prior art keywords
line
modem
switched
detecting
circuit
Prior art date
Application number
KR2019860014520U
Other languages
English (en)
Other versions
KR890007665Y1 (ko
Inventor
김홍한
Original Assignee
삼성전자주식회사
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 삼성전자주식회사 filed Critical 삼성전자주식회사
Priority to KR2019860014520U priority Critical patent/KR890007665Y1/ko
Publication of KR880007136U publication Critical patent/KR880007136U/ko
Application granted granted Critical
Publication of KR890007665Y1 publication Critical patent/KR890007665Y1/ko

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
    • H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2245—Management of the local loop plant

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
KR2019860014520U 1986-09-22 1986-09-22 모뎀에서 국설 교환기 라인오프시 사설교환기 화중음 감지에 의한 선로 차단 회로 KR890007665Y1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019860014520U KR890007665Y1 (ko) 1986-09-22 1986-09-22 모뎀에서 국설 교환기 라인오프시 사설교환기 화중음 감지에 의한 선로 차단 회로

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019860014520U KR890007665Y1 (ko) 1986-09-22 1986-09-22 모뎀에서 국설 교환기 라인오프시 사설교환기 화중음 감지에 의한 선로 차단 회로

Publications (2)

Publication Number Publication Date
KR880007136U true KR880007136U (ko) 1988-05-31
KR890007665Y1 KR890007665Y1 (ko) 1989-10-31

Family

ID=19255832

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019860014520U KR890007665Y1 (ko) 1986-09-22 1986-09-22 모뎀에서 국설 교환기 라인오프시 사설교환기 화중음 감지에 의한 선로 차단 회로

Country Status (1)

Country Link
KR (1) KR890007665Y1 (ko)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000062524A1 (en) * 1999-04-14 2000-10-19 Idea Park Co., Ltd. Ring back tone/busy tone selection-type mobile telephone
KR100480240B1 (ko) * 1997-08-27 2005-07-04 삼성전자주식회사 사설교환기에서모뎀의호해지방법

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100480240B1 (ko) * 1997-08-27 2005-07-04 삼성전자주식회사 사설교환기에서모뎀의호해지방법
WO2000062524A1 (en) * 1999-04-14 2000-10-19 Idea Park Co., Ltd. Ring back tone/busy tone selection-type mobile telephone

Also Published As

Publication number Publication date
KR890007665Y1 (ko) 1989-10-31

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