JPS55136765A - Howler signal transmission circuit - Google Patents

Howler signal transmission circuit

Info

Publication number
JPS55136765A
JPS55136765A JP4465779A JP4465779A JPS55136765A JP S55136765 A JPS55136765 A JP S55136765A JP 4465779 A JP4465779 A JP 4465779A JP 4465779 A JP4465779 A JP 4465779A JP S55136765 A JPS55136765 A JP S55136765A
Authority
JP
Japan
Prior art keywords
circuit
signal
count
subscriber
howler
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
JP4465779A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6155821B2 (enrdf_load_stackoverflow
Inventor
Kunio Nagashima
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 JP4465779A priority Critical patent/JPS55136765A/ja
Publication of JPS55136765A publication Critical patent/JPS55136765A/ja
Publication of JPS6155821B2 publication Critical patent/JPS6155821B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
JP4465779A 1979-04-12 1979-04-12 Howler signal transmission circuit Granted JPS55136765A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4465779A JPS55136765A (en) 1979-04-12 1979-04-12 Howler signal transmission circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4465779A JPS55136765A (en) 1979-04-12 1979-04-12 Howler signal transmission circuit

Publications (2)

Publication Number Publication Date
JPS55136765A true JPS55136765A (en) 1980-10-24
JPS6155821B2 JPS6155821B2 (enrdf_load_stackoverflow) 1986-11-29

Family

ID=12697510

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4465779A Granted JPS55136765A (en) 1979-04-12 1979-04-12 Howler signal transmission circuit

Country Status (1)

Country Link
JP (1) JPS55136765A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58114659A (ja) * 1981-12-28 1983-07-08 Matsushita Electric Ind Co Ltd インタ−ホン装置
JPS59265A (ja) * 1982-06-02 1984-01-05 Fujitsu Ltd ハウラ音漸増回路

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58114659A (ja) * 1981-12-28 1983-07-08 Matsushita Electric Ind Co Ltd インタ−ホン装置
JPS59265A (ja) * 1982-06-02 1984-01-05 Fujitsu Ltd ハウラ音漸増回路

Also Published As

Publication number Publication date
JPS6155821B2 (enrdf_load_stackoverflow) 1986-11-29

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