JPS5222402A - Signal device in voice band - Google Patents

Signal device in voice band

Info

Publication number
JPS5222402A
JPS5222402A JP50097629A JP9762975A JPS5222402A JP S5222402 A JPS5222402 A JP S5222402A JP 50097629 A JP50097629 A JP 50097629A JP 9762975 A JP9762975 A JP 9762975A JP S5222402 A JPS5222402 A JP S5222402A
Authority
JP
Japan
Prior art keywords
signal device
voice band
dial
make
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.)
Pending
Application number
JP50097629A
Other languages
Japanese (ja)
Inventor
Teruhiko Endo
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP50097629A priority Critical patent/JPS5222402A/en
Publication of JPS5222402A publication Critical patent/JPS5222402A/en
Pending legal-status Critical Current

Links

Landscapes

  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

PURPOSE: To make an answering possible even at a high dial speed and to make the combined use of the rotary dial and push-button telephone by making the dial signal into a signal formed by combining many frequencies.
COPYRIGHT: (C)1977,JPO&Japio
JP50097629A 1975-08-13 1975-08-13 Signal device in voice band Pending JPS5222402A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50097629A JPS5222402A (en) 1975-08-13 1975-08-13 Signal device in voice band

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50097629A JPS5222402A (en) 1975-08-13 1975-08-13 Signal device in voice band

Publications (1)

Publication Number Publication Date
JPS5222402A true JPS5222402A (en) 1977-02-19

Family

ID=14197457

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50097629A Pending JPS5222402A (en) 1975-08-13 1975-08-13 Signal device in voice band

Country Status (1)

Country Link
JP (1) JPS5222402A (en)

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