JPS53108212A - Howler sound trasmission system - Google Patents

Howler sound trasmission system

Info

Publication number
JPS53108212A
JPS53108212A JP2315677A JP2315677A JPS53108212A JP S53108212 A JPS53108212 A JP S53108212A JP 2315677 A JP2315677 A JP 2315677A JP 2315677 A JP2315677 A JP 2315677A JP S53108212 A JPS53108212 A JP S53108212A
Authority
JP
Japan
Prior art keywords
howler sound
trasmission
howler
sound
trasmission system
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
JP2315677A
Other languages
Japanese (ja)
Inventor
Haruo Amano
Yoshitaka Kato
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 JP2315677A priority Critical patent/JPS53108212A/en
Publication of JPS53108212A publication Critical patent/JPS53108212A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/02—Calling substations, e.g. by ringing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)

Abstract

PURPOSE:To secure a transmission of the howler sound in the form of an effective high-level signal to the subscriber line which introduced a subscriber line carrier device.
JP2315677A 1977-03-02 1977-03-02 Howler sound trasmission system Pending JPS53108212A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2315677A JPS53108212A (en) 1977-03-02 1977-03-02 Howler sound trasmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2315677A JPS53108212A (en) 1977-03-02 1977-03-02 Howler sound trasmission system

Publications (1)

Publication Number Publication Date
JPS53108212A true JPS53108212A (en) 1978-09-20

Family

ID=12102723

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2315677A Pending JPS53108212A (en) 1977-03-02 1977-03-02 Howler sound trasmission system

Country Status (1)

Country Link
JP (1) JPS53108212A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63246074A (en) * 1987-03-31 1988-10-13 Nec Corp Howler signal transmission system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63246074A (en) * 1987-03-31 1988-10-13 Nec Corp Howler signal transmission system

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