KR900017927U - Key phone's sidetone attenuation circuit - Google Patents

Key phone's sidetone attenuation circuit

Info

Publication number
KR900017927U
KR900017927U KR2019890004055U KR890004055U KR900017927U KR 900017927 U KR900017927 U KR 900017927U KR 2019890004055 U KR2019890004055 U KR 2019890004055U KR 890004055 U KR890004055 U KR 890004055U KR 900017927 U KR900017927 U KR 900017927U
Authority
KR
South Korea
Prior art keywords
attenuation circuit
key phone
sidetone attenuation
sidetone
phone
Prior art date
Application number
KR2019890004055U
Other languages
Korean (ko)
Other versions
KR940006615Y1 (en
Inventor
황충선
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 KR2019890004055U priority Critical patent/KR940006615Y1/en
Publication of KR900017927U publication Critical patent/KR900017927U/en
Application granted granted Critical
Publication of KR940006615Y1 publication Critical patent/KR940006615Y1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/58—Anti-side-tone circuits
KR2019890004055U 1989-03-31 1989-03-31 Sidetone reduction circuit KR940006615Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019890004055U KR940006615Y1 (en) 1989-03-31 1989-03-31 Sidetone reduction circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019890004055U KR940006615Y1 (en) 1989-03-31 1989-03-31 Sidetone reduction circuit

Publications (2)

Publication Number Publication Date
KR900017927U true KR900017927U (en) 1990-10-05
KR940006615Y1 KR940006615Y1 (en) 1994-09-26

Family

ID=19284876

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019890004055U KR940006615Y1 (en) 1989-03-31 1989-03-31 Sidetone reduction circuit

Country Status (1)

Country Link
KR (1) KR940006615Y1 (en)

Also Published As

Publication number Publication date
KR940006615Y1 (en) 1994-09-26

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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: 20000427

Year of fee payment: 8

LAPS Lapse due to unpaid annual fee