KR920015961U - 전화요금 계산신호 감지회로 - Google Patents

전화요금 계산신호 감지회로

Info

Publication number
KR920015961U
KR920015961U KR2019910000308U KR910000308U KR920015961U KR 920015961 U KR920015961 U KR 920015961U KR 2019910000308 U KR2019910000308 U KR 2019910000308U KR 910000308 U KR910000308 U KR 910000308U KR 920015961 U KR920015961 U KR 920015961U
Authority
KR
South Korea
Prior art keywords
detection circuit
signal detection
calculation signal
phone bill
bill calculation
Prior art date
Application number
KR2019910000308U
Other languages
English (en)
Other versions
KR940002284Y1 (ko
Inventor
허석배
Original Assignee
금성통신 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 금성통신 주식회사 filed Critical 금성통신 주식회사
Priority to KR2019910000308U priority Critical patent/KR940002284Y1/ko
Publication of KR920015961U publication Critical patent/KR920015961U/ko
Application granted granted Critical
Publication of KR940002284Y1 publication Critical patent/KR940002284Y1/ko

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/28—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP with meter at substation or with calculation of charges at terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/18—Comparators

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephone Function (AREA)
KR2019910000308U 1991-01-11 1991-01-11 전화요금 계산신호 감지회로 KR940002284Y1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019910000308U KR940002284Y1 (ko) 1991-01-11 1991-01-11 전화요금 계산신호 감지회로

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019910000308U KR940002284Y1 (ko) 1991-01-11 1991-01-11 전화요금 계산신호 감지회로

Publications (2)

Publication Number Publication Date
KR920015961U true KR920015961U (ko) 1992-08-17
KR940002284Y1 KR940002284Y1 (ko) 1994-04-13

Family

ID=19309635

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019910000308U KR940002284Y1 (ko) 1991-01-11 1991-01-11 전화요금 계산신호 감지회로

Country Status (1)

Country Link
KR (1) KR940002284Y1 (ko)

Also Published As

Publication number Publication date
KR940002284Y1 (ko) 1994-04-13

Similar Documents

Publication Publication Date Title
DE69315731D1 (de) Signalerkennungsschaltung
DE69118239D1 (de) Pegel-Erkennungsschaltung
DE69413154D1 (de) Detektionsschaltung
KR920015961U (ko) 전화요금 계산신호 감지회로
KR920001231U (ko) 다중모니터의 모드신호 검출회로
DE59408743D1 (de) Signalerfassungsvorrichtung
KR930003789U (ko) 신호선택회로
KR910016019U (ko) 전화 선로상의 신호음 검출회로
KR930005889U (ko) Secam방식의 방송신호 검출회로
KR930001640U (ko) 신호레벨 판별회로
KR940008829U (ko) 제로 크로스 검출 회로
KR930016879U (ko) 링백톤 신호 검출회로
KR920014042U (ko) 제로 크로싱 검출회로
KR930022509U (ko) 전화기 사용상태 검출회로
KR950010335U (ko) 신호의 경계 특성 검출회로
KR940018230U (ko) 오신호 감지회로
KR920018567U (ko) 거리 감지회로
KR920015915U (ko) Pcm 신호 접속회로의 감지장치
KR950001908U (ko) 전화선 단락 감지회로
KR930005194U (ko) 중량 검출회로
KR930016813U (ko) 래칭 루프백 신호 검출 회로
KR950028888U (ko) 전화선로 링 신호 검출회로
KR930011618U (ko) 전계강도 검출회로
KR960019400U (ko) 동기 신호 검출 회로
KR930001713U (ko) 음성중간주파 검출회로

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 19990316

Year of fee payment: 6

LAPS Lapse due to unpaid annual fee