JPS58159049A - 押ボタンダイヤル式電子化電話機 - Google Patents

押ボタンダイヤル式電子化電話機

Info

Publication number
JPS58159049A
JPS58159049A JP4225182A JP4225182A JPS58159049A JP S58159049 A JPS58159049 A JP S58159049A JP 4225182 A JP4225182 A JP 4225182A JP 4225182 A JP4225182 A JP 4225182A JP S58159049 A JPS58159049 A JP S58159049A
Authority
JP
Japan
Prior art keywords
frequency signal
lsi
common contact
push
contact
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
JP4225182A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6256706B2 (cg-RX-API-DMAC7.html
Inventor
Masahiro Osajima
緒佐島　正博
Hirotake Sugihara
杉原　広威
Masataka Arai
新井　正隆
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP4225182A priority Critical patent/JPS58159049A/ja
Publication of JPS58159049A publication Critical patent/JPS58159049A/ja
Publication of JPS6256706B2 publication Critical patent/JPS6256706B2/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)
JP4225182A 1982-03-17 1982-03-17 押ボタンダイヤル式電子化電話機 Granted JPS58159049A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4225182A JPS58159049A (ja) 1982-03-17 1982-03-17 押ボタンダイヤル式電子化電話機

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4225182A JPS58159049A (ja) 1982-03-17 1982-03-17 押ボタンダイヤル式電子化電話機

Publications (2)

Publication Number Publication Date
JPS58159049A true JPS58159049A (ja) 1983-09-21
JPS6256706B2 JPS6256706B2 (cg-RX-API-DMAC7.html) 1987-11-26

Family

ID=12630801

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4225182A Granted JPS58159049A (ja) 1982-03-17 1982-03-17 押ボタンダイヤル式電子化電話機

Country Status (1)

Country Link
JP (1) JPS58159049A (cg-RX-API-DMAC7.html)

Also Published As

Publication number Publication date
JPS6256706B2 (cg-RX-API-DMAC7.html) 1987-11-26

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