JPS6331969B2 - - Google Patents

Info

Publication number
JPS6331969B2
JPS6331969B2 JP58106206A JP10620683A JPS6331969B2 JP S6331969 B2 JPS6331969 B2 JP S6331969B2 JP 58106206 A JP58106206 A JP 58106206A JP 10620683 A JP10620683 A JP 10620683A JP S6331969 B2 JPS6331969 B2 JP S6331969B2
Authority
JP
Japan
Prior art keywords
wire
signal
line
impedance
input
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
JP58106206A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59231930A (ja
Inventor
Masanobu Arai
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 JP58106206A priority Critical patent/JPS59231930A/ja
Priority to US06/565,975 priority patent/US4600811A/en
Priority to EP83307997A priority patent/EP0112731B1/en
Priority to DE8383307997T priority patent/DE3378455D1/de
Priority to CA000444391A priority patent/CA1206649A/en
Priority to AU22978/83A priority patent/AU563506B2/en
Publication of JPS59231930A publication Critical patent/JPS59231930A/ja
Publication of JPS6331969B2 publication Critical patent/JPS6331969B2/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
    • H04M19/001—Current supply source at the exchanger providing current to substations
    • H04M19/005—Feeding arrangements without the use of line transformers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/005—Interface circuits for subscriber lines
    • 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)
  • Power Engineering (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
JP58106206A 1982-12-28 1983-06-14 ２線−４線変換回路 Granted JPS59231930A (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP58106206A JPS59231930A (ja) 1983-06-14 1983-06-14 ２線−４線変換回路
US06/565,975 US4600811A (en) 1982-12-28 1983-12-27 Subscriber line interface circuit
EP83307997A EP0112731B1 (en) 1982-12-28 1983-12-29 Subscriber line interface circuit
DE8383307997T DE3378455D1 (en) 1982-12-28 1983-12-29 Subscriber line interface circuit
CA000444391A CA1206649A (en) 1982-12-28 1983-12-29 Subscriber line interface circuit
AU22978/83A AU563506B2 (en) 1982-12-28 1983-12-29 Subscriber line interface circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58106206A JPS59231930A (ja) 1983-06-14 1983-06-14 ２線−４線変換回路

Publications (2)

Publication Number Publication Date
JPS59231930A JPS59231930A (ja) 1984-12-26
JPS6331969B2 true JPS6331969B2 (da) 1988-06-28

Family

ID=14427681

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58106206A Granted JPS59231930A (ja) 1982-12-28 1983-06-14 ２線−４線変換回路

Country Status (1)

Country Link
JP (1) JPS59231930A (da)

Also Published As

Publication number Publication date
JPS59231930A (ja) 1984-12-26

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