JPS52140210A - Multi-phase sound selection system - Google Patents

Multi-phase sound selection system

Info

Publication number
JPS52140210A
JPS52140210A JP5653776A JP5653776A JPS52140210A JP S52140210 A JPS52140210 A JP S52140210A JP 5653776 A JP5653776 A JP 5653776A JP 5653776 A JP5653776 A JP 5653776A JP S52140210 A JPS52140210 A JP S52140210A
Authority
JP
Japan
Prior art keywords
phase sound
selection system
sound selection
phase
generation unit
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
JP5653776A
Other languages
Japanese (ja)
Inventor
Shogo Shibano
Shinichi Suzuki
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
Nippon Telegraph and Telephone Corp
Original Assignee
Hitachi Ltd
Nippon Telegraph and Telephone Corp
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, Nippon Telegraph and Telephone Corp filed Critical Hitachi Ltd
Priority to JP5653776A priority Critical patent/JPS52140210A/en
Publication of JPS52140210A publication Critical patent/JPS52140210A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To realize an economical service at the announcement start time for the calling subscriber using the existing exchange by adding the multi-phase sound generation unit.
JP5653776A 1976-05-19 1976-05-19 Multi-phase sound selection system Pending JPS52140210A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5653776A JPS52140210A (en) 1976-05-19 1976-05-19 Multi-phase sound selection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5653776A JPS52140210A (en) 1976-05-19 1976-05-19 Multi-phase sound selection system

Publications (1)

Publication Number Publication Date
JPS52140210A true JPS52140210A (en) 1977-11-22

Family

ID=13029825

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5653776A Pending JPS52140210A (en) 1976-05-19 1976-05-19 Multi-phase sound selection system

Country Status (1)

Country Link
JP (1) JPS52140210A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60136568U (en) * 1984-02-21 1985-09-10 三洋電機株式会社 electronic telephone exchange
JPS6268357A (en) * 1985-09-20 1987-03-28 Nippon Telegr & Teleph Corp <Ntt> Information offering device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4985907A (en) * 1972-12-22 1974-08-17

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4985907A (en) * 1972-12-22 1974-08-17

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60136568U (en) * 1984-02-21 1985-09-10 三洋電機株式会社 electronic telephone exchange
JPS6268357A (en) * 1985-09-20 1987-03-28 Nippon Telegr & Teleph Corp <Ntt> Information offering device

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