KR900005855U - 전화기내의 통화로 자동제어장치 - Google Patents

전화기내의 통화로 자동제어장치

Info

Publication number
KR900005855U
KR900005855U KR2019880013967U KR880013967U KR900005855U KR 900005855 U KR900005855 U KR 900005855U KR 2019880013967 U KR2019880013967 U KR 2019880013967U KR 880013967 U KR880013967 U KR 880013967U KR 900005855 U KR900005855 U KR 900005855U
Authority
KR
South Korea
Prior art keywords
calls
phone
control device
automatic control
automatic
Prior art date
Application number
KR2019880013967U
Other languages
English (en)
Other versions
KR910003078Y1 (ko
Inventor
최석락
Original Assignee
최석락
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 최석락 filed Critical 최석락
Priority to KR2019880013967U priority Critical patent/KR910003078Y1/ko
Publication of KR900005855U publication Critical patent/KR900005855U/ko
Application granted granted Critical
Publication of KR910003078Y1 publication Critical patent/KR910003078Y1/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/82—Line monitoring circuits for call progress or status discrimination

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
KR2019880013967U 1988-08-27 1988-08-27 전화기내의 통화로 자동제어장치 KR910003078Y1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019880013967U KR910003078Y1 (ko) 1988-08-27 1988-08-27 전화기내의 통화로 자동제어장치

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019880013967U KR910003078Y1 (ko) 1988-08-27 1988-08-27 전화기내의 통화로 자동제어장치

Publications (2)

Publication Number Publication Date
KR900005855U true KR900005855U (ko) 1990-03-09
KR910003078Y1 KR910003078Y1 (ko) 1991-05-10

Family

ID=19278774

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019880013967U KR910003078Y1 (ko) 1988-08-27 1988-08-27 전화기내의 통화로 자동제어장치

Country Status (1)

Country Link
KR (1) KR910003078Y1 (ko)

Also Published As

Publication number Publication date
KR910003078Y1 (ko) 1991-05-10

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Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
NORF Unpaid initial registration fee