KR900007654U - 전화기의 벨신호 제어회로 - Google Patents

전화기의 벨신호 제어회로

Info

Publication number
KR900007654U
KR900007654U KR2019880015386U KR880015386U KR900007654U KR 900007654 U KR900007654 U KR 900007654U KR 2019880015386 U KR2019880015386 U KR 2019880015386U KR 880015386 U KR880015386 U KR 880015386U KR 900007654 U KR900007654 U KR 900007654U
Authority
KR
South Korea
Prior art keywords
control circuit
signal control
telephone signal
telephone
circuit
Prior art date
Application number
KR2019880015386U
Other languages
English (en)
Other versions
KR910005529Y1 (ko
Inventor
박승태
Original Assignee
삼성전자 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 삼성전자 주식회사 filed Critical 삼성전자 주식회사
Priority to KR2019880015386U priority Critical patent/KR910005529Y1/ko
Publication of KR900007654U publication Critical patent/KR900007654U/ko
Application granted granted Critical
Publication of KR910005529Y1 publication Critical patent/KR910005529Y1/ko

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
    • H04M19/042—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations with variable loudness of the ringing tone, e.g. variable envelope or amplitude of ring signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/12—Details of telephonic subscriber devices including a sensor for measuring a physical value, e.g. temperature or motion

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Function (AREA)
KR2019880015386U 1988-09-20 1988-09-20 전화기의 벨신호 제어회로 KR910005529Y1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019880015386U KR910005529Y1 (ko) 1988-09-20 1988-09-20 전화기의 벨신호 제어회로

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019880015386U KR910005529Y1 (ko) 1988-09-20 1988-09-20 전화기의 벨신호 제어회로

Publications (2)

Publication Number Publication Date
KR900007654U true KR900007654U (ko) 1990-04-04
KR910005529Y1 KR910005529Y1 (ko) 1991-07-27

Family

ID=19279491

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019880015386U KR910005529Y1 (ko) 1988-09-20 1988-09-20 전화기의 벨신호 제어회로

Country Status (1)

Country Link
KR (1) KR910005529Y1 (ko)

Also Published As

Publication number Publication date
KR910005529Y1 (ko) 1991-07-27

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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
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 19961231

Year of fee payment: 7

LAPS Lapse due to unpaid annual fee