JPS5232209A - Howler signal outgoing system - Google Patents

Howler signal outgoing system

Info

Publication number
JPS5232209A
JPS5232209A JP10699175A JP10699175A JPS5232209A JP S5232209 A JPS5232209 A JP S5232209A JP 10699175 A JP10699175 A JP 10699175A JP 10699175 A JP10699175 A JP 10699175A JP S5232209 A JPS5232209 A JP S5232209A
Authority
JP
Japan
Prior art keywords
signal outgoing
outgoing system
howler
howler signal
subscriber
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
JP10699175A
Other languages
Japanese (ja)
Inventor
Kozo Kamata
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 JP10699175A priority Critical patent/JPS5232209A/en
Priority to US05/695,760 priority patent/US4150260A/en
Priority to DE2627140A priority patent/DE2627140C3/en
Priority to GB24968/76A priority patent/GB1554421A/en
Priority to CA255,082A priority patent/CA1057437A/en
Priority to NLAANVRAGE7606570,A priority patent/NL178117C/en
Publication of JPS5232209A publication Critical patent/JPS5232209A/en
Pending 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)

Abstract

PURPOSE:To make the polarity inversion of the direct current to be fed to the subscriber's telephone perform iterative action, to transmit the Howler alarm to subscriber.
JP10699175A 1975-06-18 1975-09-05 Howler signal outgoing system Pending JPS5232209A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP10699175A JPS5232209A (en) 1975-09-05 1975-09-05 Howler signal outgoing system
US05/695,760 US4150260A (en) 1975-06-18 1976-06-14 Subscriber's circuit for four-wire-system local switch
DE2627140A DE2627140C3 (en) 1975-06-18 1976-06-16 Hybrid circuit in subscriber circuit
GB24968/76A GB1554421A (en) 1975-06-18 1976-06-16 Subscriber's circuit for four-wire-system local switch
CA255,082A CA1057437A (en) 1975-06-18 1976-06-17 Subscriber's circuit for four-wire-system local switch
NLAANVRAGE7606570,A NL178117C (en) 1975-06-18 1976-06-17 COUPLING DEVICE FOR FORMING A COUPLING BETWEEN A FOUR-WAY PATH OF A TIME MULTIPLEX SWITCH NETWORK AND A TWO-WIRE SUBSCRIBER LINE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10699175A JPS5232209A (en) 1975-09-05 1975-09-05 Howler signal outgoing system

Publications (1)

Publication Number Publication Date
JPS5232209A true JPS5232209A (en) 1977-03-11

Family

ID=14447694

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10699175A Pending JPS5232209A (en) 1975-06-18 1975-09-05 Howler signal outgoing system

Country Status (1)

Country Link
JP (1) JPS5232209A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60127086U (en) * 1984-01-31 1985-08-27 ソニー株式会社 Y/C separator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60127086U (en) * 1984-01-31 1985-08-27 ソニー株式会社 Y/C separator

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