JPS6155821B2 - - Google Patents

Info

Publication number
JPS6155821B2
JPS6155821B2 JP54044657A JP4465779A JPS6155821B2 JP S6155821 B2 JPS6155821 B2 JP S6155821B2 JP 54044657 A JP54044657 A JP 54044657A JP 4465779 A JP4465779 A JP 4465779A JP S6155821 B2 JPS6155821 B2 JP S6155821B2
Authority
JP
Japan
Prior art keywords
circuit
subscriber
howler
howler signal
counting
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.)
Expired
Application number
JP54044657A
Other languages
English (en)
Japanese (ja)
Other versions
JPS55136765A (en
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
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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
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 JPS55136765A (en) 1980-10-24
JPS6155821B2 true JPS6155821B2 (ru) 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 (ru)

Families Citing this family (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
JPS55136765A (en) 1980-10-24

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