JPH0320959B2 - - Google Patents

Info

Publication number
JPH0320959B2
JPH0320959B2 JP58110227A JP11022783A JPH0320959B2 JP H0320959 B2 JPH0320959 B2 JP H0320959B2 JP 58110227 A JP58110227 A JP 58110227A JP 11022783 A JP11022783 A JP 11022783A JP H0320959 B2 JPH0320959 B2 JP H0320959B2
Authority
JP
Japan
Prior art keywords
polarity
current
circuit
power supply
switch
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 - Lifetime
Application number
JP58110227A
Other languages
English (en)
Japanese (ja)
Other versions
JPS603258A (ja
Inventor
Toshio Arai
Masaki Ehata
Kazuo Hamasato
Takeo Koinuma
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.)
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Oki Electric Industry 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 Telegraph and Telephone Corp, Oki Electric Industry Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP58110227A priority Critical patent/JPS603258A/ja
Publication of JPS603258A publication Critical patent/JPS603258A/ja
Publication of JPH0320959B2 publication Critical patent/JPH0320959B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/38—Signalling arrangements; Manipulation of signalling currents using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
JP58110227A 1983-06-21 1983-06-21 極性反転方式 Granted JPS603258A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58110227A JPS603258A (ja) 1983-06-21 1983-06-21 極性反転方式

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58110227A JPS603258A (ja) 1983-06-21 1983-06-21 極性反転方式

Publications (2)

Publication Number Publication Date
JPS603258A JPS603258A (ja) 1985-01-09
JPH0320959B2 true JPH0320959B2 (enrdf_load_stackoverflow) 1991-03-20

Family

ID=14530310

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58110227A Granted JPS603258A (ja) 1983-06-21 1983-06-21 極性反転方式

Country Status (1)

Country Link
JP (1) JPS603258A (enrdf_load_stackoverflow)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS587105B2 (ja) * 1979-01-17 1983-02-08 日本電気株式会社 端末起動方式
JPS5863262A (ja) * 1981-10-12 1983-04-15 Nippon Telegr & Teleph Corp <Ntt> 通話電流供給方式
JPS58101556A (ja) * 1981-12-14 1983-06-16 Hitachi Ltd 直流供給遮断回路

Also Published As

Publication number Publication date
JPS603258A (ja) 1985-01-09

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