KR920014102U - Ring trip prevention circuit of telephone - Google Patents

Ring trip prevention circuit of telephone

Info

Publication number
KR920014102U
KR920014102U KR2019900019131U KR900019131U KR920014102U KR 920014102 U KR920014102 U KR 920014102U KR 2019900019131 U KR2019900019131 U KR 2019900019131U KR 900019131 U KR900019131 U KR 900019131U KR 920014102 U KR920014102 U KR 920014102U
Authority
KR
South Korea
Prior art keywords
telephone
prevention circuit
ring trip
trip prevention
ring
Prior art date
Application number
KR2019900019131U
Other languages
Korean (ko)
Other versions
KR960000655Y1 (en
Inventor
이재철
Original Assignee
엘지전자 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 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR2019900019131U priority Critical patent/KR960000655Y1/en
Publication of KR920014102U publication Critical patent/KR920014102U/en
Application granted granted Critical
Publication of KR960000655Y1 publication Critical patent/KR960000655Y1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/74—Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults
    • H04M1/745—Protection devices or circuits for voltages surges on the line
    • 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
    • H04M2201/80—Electronic components, circuits, software, systems or apparatus used in telephone systems line protection circuits such as current or overvoltage protection circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
KR2019900019131U 1990-12-05 1990-12-05 Ring trip prevention circuit of phone KR960000655Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019900019131U KR960000655Y1 (en) 1990-12-05 1990-12-05 Ring trip prevention circuit of phone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019900019131U KR960000655Y1 (en) 1990-12-05 1990-12-05 Ring trip prevention circuit of phone

Publications (2)

Publication Number Publication Date
KR920014102U true KR920014102U (en) 1992-07-27
KR960000655Y1 KR960000655Y1 (en) 1996-01-25

Family

ID=19306496

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019900019131U KR960000655Y1 (en) 1990-12-05 1990-12-05 Ring trip prevention circuit of phone

Country Status (1)

Country Link
KR (1) KR960000655Y1 (en)

Also Published As

Publication number Publication date
KR960000655Y1 (en) 1996-01-25

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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: 19990316

Year of fee payment: 4

LAPS Lapse due to unpaid annual fee