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ZA771950B - Telecommunication substation - Google Patents

Telecommunication substation

Info

Publication number
ZA771950B
ZA771950B ZA00771950A ZA771950A ZA771950B ZA 771950 B ZA771950 B ZA 771950B ZA 00771950 A ZA00771950 A ZA 00771950A ZA 771950 A ZA771950 A ZA 771950A ZA 771950 B ZA771950 B ZA 771950B
Authority
ZA
South Africa
Prior art keywords
substation
telecommunication
telecommunication substation
Prior art date
Application number
ZA00771950A
Inventor
L Poppe
Original Assignee
Int 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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Publication of ZA771950B publication Critical patent/ZA771950B/en

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)
  • Devices For Supply Of Signal Current (AREA)
  • Amplifiers (AREA)
ZA00771950A 1976-04-26 1977-03-31 Telecommunication substation ZA771950B (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ZA771950B true ZA771950B (en) 1978-04-26

Family

ID=3865331

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00771950A ZA771950B (en) 1976-04-26 1977-03-31 Telecommunication substation

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
AU2453677A (en) 1978-10-26
AU507967B2 (en) 1980-03-06
GB1531692A (en) 1978-11-08
FR2350014A1 (en) 1977-11-25
DE2718009A1 (en) 1977-11-10
BE841105A (en) 1976-10-26

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