KR900001834U - Auto-answer telephone volume control circuit - Google Patents

Auto-answer telephone volume control circuit

Info

Publication number
KR900001834U
KR900001834U KR2019880009892U KR880009892U KR900001834U KR 900001834 U KR900001834 U KR 900001834U KR 2019880009892 U KR2019880009892 U KR 2019880009892U KR 880009892 U KR880009892 U KR 880009892U KR 900001834 U KR900001834 U KR 900001834U
Authority
KR
South Korea
Prior art keywords
auto
control circuit
volume control
answer telephone
telephone volume
Prior art date
Application number
KR2019880009892U
Other languages
Korean (ko)
Other versions
KR910003757Y1 (en
Inventor
이석근
Original Assignee
삼성전자주식회사
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 삼성전자주식회사 filed Critical 삼성전자주식회사
Priority to KR2019880009892U priority Critical patent/KR910003757Y1/en
Publication of KR900001834U publication Critical patent/KR900001834U/en
Application granted granted Critical
Publication of KR910003757Y1 publication Critical patent/KR910003757Y1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6016—Substation equipment, e.g. for use by subscribers including speech amplifiers in the receiver circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
KR2019880009892U 1988-06-25 1988-06-25 Volume control circuit for automatic answering telephone system KR910003757Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019880009892U KR910003757Y1 (en) 1988-06-25 1988-06-25 Volume control circuit for automatic answering telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019880009892U KR910003757Y1 (en) 1988-06-25 1988-06-25 Volume control circuit for automatic answering telephone system

Publications (2)

Publication Number Publication Date
KR900001834U true KR900001834U (en) 1990-01-19
KR910003757Y1 KR910003757Y1 (en) 1991-06-01

Family

ID=19276692

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019880009892U KR910003757Y1 (en) 1988-06-25 1988-06-25 Volume control circuit for automatic answering telephone system

Country Status (1)

Country Link
KR (1) KR910003757Y1 (en)

Also Published As

Publication number Publication date
KR910003757Y1 (en) 1991-06-01

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Legal Events

Date Code Title Description
A201 Request for examination
N231 Notification of change of applicant
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: 20020527

Year of fee payment: 12

EXPY Expiration of term