AU2453677A - An electronic telephone subset - Google Patents

An electronic telephone subset

Info

Publication number
AU2453677A
AU2453677A AU24536/77A AU2453677A AU2453677A AU 2453677 A AU2453677 A AU 2453677A AU 24536/77 A AU24536/77 A AU 24536/77A AU 2453677 A AU2453677 A AU 2453677A AU 2453677 A AU2453677 A AU 2453677A
Authority
AU
Australia
Prior art keywords
electronic telephone
telephone subset
subset
electronic
telephone
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
AU24536/77A
Other versions
AU507967B2 (en
Inventor
Lucas Achiel Leonie Poppe
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
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of AU2453677A publication Critical patent/AU2453677A/en
Application granted granted Critical
Publication of AU507967B2 publication Critical patent/AU507967B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6008—Substation equipment, e.g. for use by subscribers including speech amplifiers in the transmitter circuit
    • 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)
  • Amplifiers (AREA)
  • Devices For Supply Of Signal Current (AREA)
AU24536/77A 1976-04-26 1977-04-22 Electronic telephone subset Expired AU507967B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE2054973A BE841105A (en) 1976-04-26 1976-04-26 TELECOMMUNICATION DEVICE

Publications (2)

Publication Number Publication Date
AU2453677A true AU2453677A (en) 1978-10-26
AU507967B2 AU507967B2 (en) 1980-03-06

Family

ID=3865331

Family Applications (1)

Application Number Title Priority Date Filing Date
AU24536/77A Expired AU507967B2 (en) 1976-04-26 1977-04-22 Electronic telephone subset

Country Status (6)

Country Link
AU (1) AU507967B2 (en)
BE (1) BE841105A (en)
DE (1) DE2718009A1 (en)
FR (1) FR2350014A1 (en)
GB (1) GB1531692A (en)
ZA (1) ZA771950B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1546046A (en) * 1976-12-03 1979-05-16 Cselt Centro Studi Lab Telecom Transmitting and receiving circuit for subscriber telephone sets
GB2126046A (en) * 1982-08-25 1984-03-14 Philips Electronic Associated Telephone circuit
FR2575625B1 (en) * 1984-12-27 1987-01-30 Thomson Csf SUBSCRIBER TELEPHONE SET WITH LOUDSPEAKER LOUDSPEAKER WITH REDUCED GAIN IN THE EVENT OF INSUFFICIENT POWER SUPPLY

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2818470A (en) * 1956-03-29 1957-12-31 Bell Telephone Labor Inc Compensated transistor circuit
US3546395A (en) * 1968-01-15 1970-12-08 Bell Telephone Labor Inc Active telephone set speech network employing transistor feedback loop for sidetone balance and equalization
DE1762058B2 (en) * 1968-03-29 1970-12-03 Siemens AG, 1000 Berlin u. 8000 München Circuit arrangement for centrally fed subscriber stations with speech circuits containing a resistor bridge
JPS5211166B1 (en) * 1970-07-23 1977-03-29
BE792329A (en) * 1971-12-09 1973-06-06 Int Standard Electric Corp ELECTRONIC TRANSMISSION CIRCUIT FOR TELEPHONE STATION

Also Published As

Publication number Publication date
GB1531692A (en) 1978-11-08
FR2350014A1 (en) 1977-11-25
DE2718009A1 (en) 1977-11-10
BE841105A (en) 1976-10-26
AU507967B2 (en) 1980-03-06
ZA771950B (en) 1978-04-26

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