JPS522108A - Subscriber#s line signal detecting system - Google Patents

Subscriber#s line signal detecting system

Info

Publication number
JPS522108A
JPS522108A JP7655075A JP7655075A JPS522108A JP S522108 A JPS522108 A JP S522108A JP 7655075 A JP7655075 A JP 7655075A JP 7655075 A JP7655075 A JP 7655075A JP S522108 A JPS522108 A JP S522108A
Authority
JP
Japan
Prior art keywords
subscriber
detecting system
line signal
signal detecting
circuit
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
JP7655075A
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 JP7655075A priority Critical patent/JPS522108A/en
Priority to US05/695,760 priority patent/US4150260A/en
Priority to GB24968/76A priority patent/GB1554421A/en
Priority to DE2627140A priority patent/DE2627140C3/en
Priority to CA255,082A priority patent/CA1057437A/en
Priority to NLAANVRAGE7606570,A priority patent/NL178117C/en
Publication of JPS522108A publication Critical patent/JPS522108A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

PURPOSE:To provide a subscriber's line signal detecting system which can be simplified in circuit and be improved in quality upon receipt of a signal from a subscriber's telephone at four-wired hybrid circuit.
JP7655075A 1975-06-18 1975-06-24 Subscriber#s line signal detecting system Pending JPS522108A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP7655075A JPS522108A (en) 1975-06-24 1975-06-24 Subscriber#s line signal detecting system
US05/695,760 US4150260A (en) 1975-06-18 1976-06-14 Subscriber's circuit for four-wire-system local switch
GB24968/76A GB1554421A (en) 1975-06-18 1976-06-16 Subscriber's circuit for four-wire-system local switch
DE2627140A DE2627140C3 (en) 1975-06-18 1976-06-16 Hybrid circuit in subscriber circuit
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
JP7655075A JPS522108A (en) 1975-06-24 1975-06-24 Subscriber#s line signal detecting system

Publications (1)

Publication Number Publication Date
JPS522108A true JPS522108A (en) 1977-01-08

Family

ID=13608359

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7655075A Pending JPS522108A (en) 1975-06-18 1975-06-24 Subscriber#s line signal detecting system

Country Status (1)

Country Link
JP (1) JPS522108A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3700831A (en) * 1970-01-13 1972-10-24 Philips Corp Hybrid circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3700831A (en) * 1970-01-13 1972-10-24 Philips Corp Hybrid circuit

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