JPS58161457A - 電話機回路 - Google Patents

電話機回路

Info

Publication number
JPS58161457A
JPS58161457A JP4314182A JP4314182A JPS58161457A JP S58161457 A JPS58161457 A JP S58161457A JP 4314182 A JP4314182 A JP 4314182A JP 4314182 A JP4314182 A JP 4314182A JP S58161457 A JPS58161457 A JP S58161457A
Authority
JP
Japan
Prior art keywords
circuit
resistor
terminal
oscillation
signal
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP4314182A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6256707B2 (https=
Inventor
Akinobu Tomimori
富盛　昭宜
Masaru Nagashima
優 長島
Atsushi Nagata
敦 永田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP4314182A priority Critical patent/JPS58161457A/ja
Publication of JPS58161457A publication Critical patent/JPS58161457A/ja
Publication of JPS6256707B2 publication Critical patent/JPS6256707B2/ja
Granted legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
JP4314182A 1982-03-18 1982-03-18 電話機回路 Granted JPS58161457A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4314182A JPS58161457A (ja) 1982-03-18 1982-03-18 電話機回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4314182A JPS58161457A (ja) 1982-03-18 1982-03-18 電話機回路

Publications (2)

Publication Number Publication Date
JPS58161457A true JPS58161457A (ja) 1983-09-26
JPS6256707B2 JPS6256707B2 (https=) 1987-11-26

Family

ID=12655554

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4314182A Granted JPS58161457A (ja) 1982-03-18 1982-03-18 電話機回路

Country Status (1)

Country Link
JP (1) JPS58161457A (https=)

Also Published As

Publication number Publication date
JPS6256707B2 (https=) 1987-11-26

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