KR870015565U - Dial transmission circuit for both tone and pulse - Google Patents

Dial transmission circuit for both tone and pulse

Info

Publication number
KR870015565U
KR870015565U KR2019860003440U KR860003440U KR870015565U KR 870015565 U KR870015565 U KR 870015565U KR 2019860003440 U KR2019860003440 U KR 2019860003440U KR 860003440 U KR860003440 U KR 860003440U KR 870015565 U KR870015565 U KR 870015565U
Authority
KR
South Korea
Prior art keywords
tone
pulse
transmission circuit
dial transmission
dial
Prior art date
Application number
KR2019860003440U
Other languages
Korean (ko)
Other versions
KR890004369Y1 (en
Inventor
이세열
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 KR2019860003440U priority Critical patent/KR890004369Y1/en
Publication of KR870015565U publication Critical patent/KR870015565U/en
Application granted granted Critical
Publication of KR890004369Y1 publication Critical patent/KR890004369Y1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • H04M1/312—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses pulses produced by electronic circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
KR2019860003440U 1986-03-21 1986-03-21 Tone and pulse dial transmitting circuit KR890004369Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019860003440U KR890004369Y1 (en) 1986-03-21 1986-03-21 Tone and pulse dial transmitting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019860003440U KR890004369Y1 (en) 1986-03-21 1986-03-21 Tone and pulse dial transmitting circuit

Publications (2)

Publication Number Publication Date
KR870015565U true KR870015565U (en) 1987-10-26
KR890004369Y1 KR890004369Y1 (en) 1989-06-30

Family

ID=19249765

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019860003440U KR890004369Y1 (en) 1986-03-21 1986-03-21 Tone and pulse dial transmitting circuit

Country Status (1)

Country Link
KR (1) KR890004369Y1 (en)

Also Published As

Publication number Publication date
KR890004369Y1 (en) 1989-06-30

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Legal Events

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Payment date: 20000525

Year of fee payment: 12

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