KR920005593U - 사설교환기의 디티엠에프 수신 감지 회로 - Google Patents

사설교환기의 디티엠에프 수신 감지 회로

Info

Publication number
KR920005593U
KR920005593U KR2019900013612U KR900013612U KR920005593U KR 920005593 U KR920005593 U KR 920005593U KR 2019900013612 U KR2019900013612 U KR 2019900013612U KR 900013612 U KR900013612 U KR 900013612U KR 920005593 U KR920005593 U KR 920005593U
Authority
KR
South Korea
Prior art keywords
detection circuit
private exchange
reception detection
dmt
dmt reception
Prior art date
Application number
KR2019900013612U
Other languages
English (en)
Other versions
KR950003118Y1 (ko
Inventor
김종득
Original Assignee
금성정보통신 주식회사
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 금성정보통신 주식회사 filed Critical 금성정보통신 주식회사
Priority to KR2019900013612U priority Critical patent/KR950003118Y1/ko
Publication of KR920005593U publication Critical patent/KR920005593U/ko
Application granted granted Critical
Publication of KR950003118Y1 publication Critical patent/KR950003118Y1/ko

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
    • H04Q1/4575—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals which are transmitted in digital form
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/622—Circuit arrangements therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
KR2019900013612U 1990-08-31 1990-08-31 사설교환기의 디티엠에프 수신 감지 회로 KR950003118Y1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019900013612U KR950003118Y1 (ko) 1990-08-31 1990-08-31 사설교환기의 디티엠에프 수신 감지 회로

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019900013612U KR950003118Y1 (ko) 1990-08-31 1990-08-31 사설교환기의 디티엠에프 수신 감지 회로

Publications (2)

Publication Number Publication Date
KR920005593U true KR920005593U (ko) 1992-03-26
KR950003118Y1 KR950003118Y1 (ko) 1995-04-21

Family

ID=19302994

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019900013612U KR950003118Y1 (ko) 1990-08-31 1990-08-31 사설교환기의 디티엠에프 수신 감지 회로

Country Status (1)

Country Link
KR (1) KR950003118Y1 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100547191B1 (ko) * 1998-08-28 2006-01-26 보이트 투르보 샤르펜베르크 게엠베하 운트 코. 카게 궤도차량용 전기 케이블 커플링

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100547191B1 (ko) * 1998-08-28 2006-01-26 보이트 투르보 샤르펜베르크 게엠베하 운트 코. 카게 궤도차량용 전기 케이블 커플링

Also Published As

Publication number Publication date
KR950003118Y1 (ko) 1995-04-21

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Legal Events

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A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
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Payment date: 19980414

Year of fee payment: 5

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