GB2042848B - Line current feed and hybrid arrangement (sytem x) - Google Patents

Line current feed and hybrid arrangement (sytem x)

Info

Publication number
GB2042848B
GB2042848B GB7850384A GB7850384A GB2042848B GB 2042848 B GB2042848 B GB 2042848B GB 7850384 A GB7850384 A GB 7850384A GB 7850384 A GB7850384 A GB 7850384A GB 2042848 B GB2042848 B GB 2042848B
Authority
GB
United Kingdom
Prior art keywords
sytem
line current
current feed
hybrid arrangement
hybrid
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
GB7850384A
Other versions
GB2042848A (en
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.)
Plessey Co Ltd
Original Assignee
Plessey 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB7850384A priority Critical patent/GB2042848B/en
Priority to ZA00796287A priority patent/ZA796287B/en
Priority to AU53231/79A priority patent/AU5323179A/en
Priority to BR7907891A priority patent/BR7907891A/en
Priority to NZ192462A priority patent/NZ192462A/en
Priority to NL7909148A priority patent/NL7909148A/en
Priority to DE19792952259 priority patent/DE2952259A1/en
Priority to SE7910670A priority patent/SE7910670L/en
Priority to JP17396679A priority patent/JPS5593363A/en
Priority to IE2528/79A priority patent/IE48895B1/en
Priority to FR7932036A priority patent/FR2445666A1/en
Publication of GB2042848A publication Critical patent/GB2042848A/en
Application granted granted Critical
Publication of GB2042848B publication Critical patent/GB2042848B/en
Expired 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
    • H04B1/581—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 transformer
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephone Function (AREA)
  • Devices For Supply Of Signal Current (AREA)
GB7850384A 1978-12-30 1978-12-30 Line current feed and hybrid arrangement (sytem x) Expired GB2042848B (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
GB7850384A GB2042848B (en) 1978-12-30 1978-12-30 Line current feed and hybrid arrangement (sytem x)
ZA00796287A ZA796287B (en) 1978-12-30 1979-10-20 Line current feed circuits for telecommunication exchanges
AU53231/79A AU5323179A (en) 1978-12-30 1979-11-27 Telephony line current feeding
BR7907891A BR7907891A (en) 1978-12-30 1979-12-04 LINE CURRENT POWER SUPPLY CIRCUITS FOR TELECOMMUNICATIONS
NL7909148A NL7909148A (en) 1978-12-30 1979-12-19 LINE POWER SUPPLY CIRCUIT FOR A TELECOMMUNICATIONS CENTER.
NZ192462A NZ192462A (en) 1978-12-30 1979-12-19 2-to-4 wire matching arrangement
DE19792952259 DE2952259A1 (en) 1978-12-30 1979-12-24 TWO-WIRE-FOUR-WIRE COMMUNICATION CIRCUIT
SE7910670A SE7910670L (en) 1978-12-30 1979-12-27 TWO-WIRELESS CIRCUIT FOR TELEPHONE CONNECTIONS
JP17396679A JPS5593363A (en) 1978-12-30 1979-12-27 Twoowire vs* fourrwire communication line circuit
IE2528/79A IE48895B1 (en) 1978-12-30 1979-12-28 Line current feed circuits for telecommunication exchanges
FR7932036A FR2445666A1 (en) 1978-12-30 1979-12-28 LINE CIRCUIT FOR A TELECOMMUNICATION NETWORK PROVIDING THE CURRENT SUPPLY OF TERMINAL EQUIPMENT FOR TWO-LINE LINES IN FOUR-LINE LINES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7850384A GB2042848B (en) 1978-12-30 1978-12-30 Line current feed and hybrid arrangement (sytem x)

Publications (2)

Publication Number Publication Date
GB2042848A GB2042848A (en) 1980-09-24
GB2042848B true GB2042848B (en) 1983-01-06

Family

ID=10502016

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7850384A Expired GB2042848B (en) 1978-12-30 1978-12-30 Line current feed and hybrid arrangement (sytem x)

Country Status (11)

Country Link
JP (1) JPS5593363A (en)
AU (1) AU5323179A (en)
BR (1) BR7907891A (en)
DE (1) DE2952259A1 (en)
FR (1) FR2445666A1 (en)
GB (1) GB2042848B (en)
IE (1) IE48895B1 (en)
NL (1) NL7909148A (en)
NZ (1) NZ192462A (en)
SE (1) SE7910670L (en)
ZA (1) ZA796287B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3007791A1 (en) * 1980-02-29 1981-09-10 Siemens AG, 1000 Berlin und 8000 München CIRCUIT ARRANGEMENT FOR INCREASING THE INDUCTIVITY OF A TRANSMITTER
EP0063414B1 (en) * 1981-04-06 1988-08-10 Northern Telecom Limited Apparatus for coupling signals to or from a two-wire line
DE3138726A1 (en) * 1981-09-29 1983-04-07 Siemens AG, 1000 Berlin und 8000 München Subscriber connection circuit for connecting two-wire subscriber connection lines to a four-wire through-connecting digital time division multiplex exchange
FR2552288B1 (en) * 1983-09-15 1989-03-24 Telecommunications Sa TELEPHONE SUBSCRIBER
US4595802A (en) * 1983-11-29 1986-06-17 Northern Telecom Limited Hybrid circuit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2063475A5 (en) * 1969-10-17 1971-07-09 Labo Cent Telecommunicat
FR2131038A5 (en) * 1971-03-30 1972-11-10 Ass Ouvriers Instr Preci
FR2166696A5 (en) * 1972-01-04 1973-08-17 Ass Ouvriers Instr Preci
US3955052A (en) * 1974-11-18 1976-05-04 Tadiran Israel Electronics Industries Ltd. Subscriber unit particularly useful for time-division-multiplex system

Also Published As

Publication number Publication date
FR2445666A1 (en) 1980-07-25
IE792528L (en) 1980-06-30
IE48895B1 (en) 1985-06-12
JPS5593363A (en) 1980-07-15
AU5323179A (en) 1980-07-03
FR2445666B1 (en) 1984-10-12
GB2042848A (en) 1980-09-24
NZ192462A (en) 1982-05-25
SE7910670L (en) 1980-07-01
BR7907891A (en) 1980-07-29
ZA796287B (en) 1980-11-26
DE2952259A1 (en) 1980-07-17
NL7909148A (en) 1980-07-02

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee