JPS5284907A - Twoowire*fourrwire converter - Google Patents

Twoowire*fourrwire converter

Info

Publication number
JPS5284907A
JPS5284907A JP14460276A JP14460276A JPS5284907A JP S5284907 A JPS5284907 A JP S5284907A JP 14460276 A JP14460276 A JP 14460276A JP 14460276 A JP14460276 A JP 14460276A JP S5284907 A JPS5284907 A JP S5284907A
Authority
JP
Japan
Prior art keywords
twoowire
fourrwire
converter
fourrwire converter
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
JP14460276A
Other languages
Japanese (ja)
Inventor
Sutanrei Rojiyaazu Arasuteaa
Sorogutsudo Saarou Nooman
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.)
Post Office
Original Assignee
Post Office
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 Post Office filed Critical Post Office
Publication of JPS5284907A publication Critical patent/JPS5284907A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/583—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa using a bridge network
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Interface Circuits In Exchanges (AREA)
JP14460276A 1975-12-01 1976-12-01 Twoowire*fourrwire converter Pending JPS5284907A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB49303/75A GB1572595A (en) 1975-12-01 1975-12-01 Two-wire to four-wire converters

Publications (1)

Publication Number Publication Date
JPS5284907A true JPS5284907A (en) 1977-07-14

Family

ID=10451889

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14460276A Pending JPS5284907A (en) 1975-12-01 1976-12-01 Twoowire*fourrwire converter

Country Status (5)

Country Link
JP (1) JPS5284907A (en)
DE (1) DE2654495A1 (en)
GB (1) GB1572595A (en)
NL (1) NL7613299A (en)
SE (1) SE7613470L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4491700A (en) * 1980-12-20 1985-01-01 Nippon Telegraph And Telephone Public Corporation Hybrid circuit in a telephone subscriber interface circuit

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2833722C2 (en) * 1978-08-01 1982-06-03 Siemens AG, 1000 Berlin und 8000 München Process for coil, relay contact and transformer-free ringing current and loop current feed
DE2833768C2 (en) * 1978-08-01 1982-07-01 Siemens AG, 1000 Berlin und 8000 München Process for coil, relay contact and transformer-free ringing current and loop current feed
FR2437116A1 (en) * 1978-09-19 1980-04-18 Thomson Ericsson Telephones So SEPARATION AND BALANCING DEVICE FOR TELEPHONE SWITCHES
CA1291836C (en) * 1987-06-17 1991-11-05 Kenji Takato Battery feed circuit
DE29802482U1 (en) * 1998-02-13 1999-04-01 Siemens Ag Circuit for determining the direction of transmission of a device for connecting a subscriber to a bus line
DE29802483U1 (en) * 1998-02-13 1999-04-01 Siemens Ag Device for connecting a subscriber to a bus line
US6366976B1 (en) 1998-02-13 2002-04-02 Siemens Aktiengesellschaft Device for connecting a subscriber to a bus line

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4491700A (en) * 1980-12-20 1985-01-01 Nippon Telegraph And Telephone Public Corporation Hybrid circuit in a telephone subscriber interface circuit

Also Published As

Publication number Publication date
DE2654495A1 (en) 1977-06-08
SE7613470L (en) 1977-06-02
NL7613299A (en) 1977-06-03
GB1572595A (en) 1980-07-30

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