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AU3044284A - Telephony impedance matching - Google Patents

Telephony impedance matching

Info

Publication number
AU3044284A
AU3044284A AU30442/84A AU3044284A AU3044284A AU 3044284 A AU3044284 A AU 3044284A AU 30442/84 A AU30442/84 A AU 30442/84A AU 3044284 A AU3044284 A AU 3044284A AU 3044284 A AU3044284 A AU 3044284A
Authority
AU
Australia
Prior art keywords
telephony
impedance matching
impedance
matching
telephony impedance
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.)
Abandoned
Application number
AU30442/84A
Other languages
English (en)
Inventor
Peter Fred Blomley
Edward John Wemyss Whittaker
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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
Priority claimed from GB08319222A external-priority patent/GB2154831B/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of AU3044284A publication Critical patent/AU3044284A/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/28—Impedance matching networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/76—Compensating for differences in line impedance

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Networks Using Active Elements (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephone Function (AREA)
  • Amplifiers (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
AU30442/84A 1983-07-15 1984-07-10 Telephony impedance matching Abandoned AU3044284A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8319222 1983-07-15
GB08319222A GB2154831B (en) 1983-06-29 1983-07-15 Impedance matching circuit

Publications (1)

Publication Number Publication Date
AU3044284A true AU3044284A (en) 1985-01-17

Family

ID=10545801

Family Applications (1)

Application Number Title Priority Date Filing Date
AU30442/84A Abandoned AU3044284A (en) 1983-07-15 1984-07-10 Telephony impedance matching

Country Status (7)

Country Link
JP (1) JPS6074732A (es)
KR (1) KR850005046A (es)
AU (1) AU3044284A (es)
ES (1) ES534300A0 (es)
FR (1) FR2549325A1 (es)
GB (1) GB2146505B (es)
IT (1) IT1174568B (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6243944A (ja) * 1985-08-21 1987-02-25 Toshiba Corp 電話機回路

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1233955A (es) * 1967-10-23 1971-06-03
JPS5679551A (en) * 1979-12-04 1981-06-30 Hitachi Ltd Bus line termination system

Also Published As

Publication number Publication date
KR850005046A (ko) 1985-08-19
GB2146505B (en) 1987-04-15
IT8421777A1 (it) 1986-01-06
ES8601608A1 (es) 1985-10-16
GB2146505A (en) 1985-04-17
JPS6074732A (ja) 1985-04-27
FR2549325A1 (fr) 1985-01-18
ES534300A0 (es) 1985-10-16
IT8421777A0 (it) 1984-07-06
GB8417828D0 (en) 1984-08-15
IT1174568B (it) 1987-07-01

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