KR910016007U - Keyphone telephone external alarm connection circuit - Google Patents

Keyphone telephone external alarm connection circuit

Info

Publication number
KR910016007U
KR910016007U KR2019900002398U KR900002398U KR910016007U KR 910016007 U KR910016007 U KR 910016007U KR 2019900002398 U KR2019900002398 U KR 2019900002398U KR 900002398 U KR900002398 U KR 900002398U KR 910016007 U KR910016007 U KR 910016007U
Authority
KR
South Korea
Prior art keywords
connection circuit
external alarm
alarm connection
telephone external
keyphone telephone
Prior art date
Application number
KR2019900002398U
Other languages
Korean (ko)
Other versions
KR950010378Y1 (en
Inventor
한상기
Original Assignee
Lg전자 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 Lg전자 주식회사 filed Critical Lg전자 주식회사
Priority to KR2019900002398U priority Critical patent/KR950010378Y1/en
Publication of KR910016007U publication Critical patent/KR910016007U/en
Application granted granted Critical
Publication of KR950010378Y1 publication Critical patent/KR950010378Y1/en

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
    • H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/04—Transistors

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Telephone Function (AREA)
KR2019900002398U 1990-02-28 1990-02-28 Keyphone with laud bell connecting device KR950010378Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019900002398U KR950010378Y1 (en) 1990-02-28 1990-02-28 Keyphone with laud bell connecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019900002398U KR950010378Y1 (en) 1990-02-28 1990-02-28 Keyphone with laud bell connecting device

Publications (2)

Publication Number Publication Date
KR910016007U true KR910016007U (en) 1991-09-25
KR950010378Y1 KR950010378Y1 (en) 1995-12-11

Family

ID=19296417

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019900002398U KR950010378Y1 (en) 1990-02-28 1990-02-28 Keyphone with laud bell connecting device

Country Status (1)

Country Link
KR (1) KR950010378Y1 (en)

Also Published As

Publication number Publication date
KR950010378Y1 (en) 1995-12-11

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Legal Events

Date Code Title Description
A201 Request for examination
N231 Notification of change of applicant
E701 Decision to grant or registration of patent right
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 19971229

Year of fee payment: 4

LAPS Lapse due to unpaid annual fee