KR910008303U - Sound tone generation circuit of electronic switchboard - Google Patents

Sound tone generation circuit of electronic switchboard

Info

Publication number
KR910008303U
KR910008303U KR2019890015197U KR890015197U KR910008303U KR 910008303 U KR910008303 U KR 910008303U KR 2019890015197 U KR2019890015197 U KR 2019890015197U KR 890015197 U KR890015197 U KR 890015197U KR 910008303 U KR910008303 U KR 910008303U
Authority
KR
South Korea
Prior art keywords
generation circuit
tone generation
sound tone
electronic switchboard
switchboard
Prior art date
Application number
KR2019890015197U
Other languages
Korean (ko)
Other versions
KR920002341Y1 (en
Inventor
김기찬
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 KR2019890015197U priority Critical patent/KR920002341Y1/en
Publication of KR910008303U publication Critical patent/KR910008303U/en
Application granted granted Critical
Publication of KR920002341Y1 publication Critical patent/KR920002341Y1/en

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/20—Testing circuits or apparatus; Circuits or apparatus for detecting, indicating, or signalling faults or troubles

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
KR2019890015197U 1989-10-18 1989-10-18 Tone generating circuit in exchange KR920002341Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019890015197U KR920002341Y1 (en) 1989-10-18 1989-10-18 Tone generating circuit in exchange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019890015197U KR920002341Y1 (en) 1989-10-18 1989-10-18 Tone generating circuit in exchange

Publications (2)

Publication Number Publication Date
KR910008303U true KR910008303U (en) 1991-05-31
KR920002341Y1 KR920002341Y1 (en) 1992-04-09

Family

ID=19290914

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019890015197U KR920002341Y1 (en) 1989-10-18 1989-10-18 Tone generating circuit in exchange

Country Status (1)

Country Link
KR (1) KR920002341Y1 (en)

Also Published As

Publication number Publication date
KR920002341Y1 (en) 1992-04-09

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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: 20030324

Year of fee payment: 12

LAPS Lapse due to unpaid annual fee