IT1153526B - Rete vocale elettronica per sottostazioni di abbonati telefonici - Google Patents

Rete vocale elettronica per sottostazioni di abbonati telefonici

Info

Publication number
IT1153526B
IT1153526B IT21844/82A IT2184482A IT1153526B IT 1153526 B IT1153526 B IT 1153526B IT 21844/82 A IT21844/82 A IT 21844/82A IT 2184482 A IT2184482 A IT 2184482A IT 1153526 B IT1153526 B IT 1153526B
Authority
IT
Italy
Prior art keywords
substations
voice network
electronic voice
telephone subscription
subscription
Prior art date
Application number
IT21844/82A
Other languages
English (en)
Other versions
IT8221844A0 (it
Inventor
William Stobbs
Charles Hines
Rickey W Light
Original Assignee
Gte Automatic Electric Lab Inc
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 Gte Automatic Electric Lab Inc filed Critical Gte Automatic Electric Lab Inc
Publication of IT8221844A0 publication Critical patent/IT8221844A0/it
Application granted granted Critical
Publication of IT1153526B publication Critical patent/IT1153526B/it

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/58—Anti-side-tone circuits
    • H04M1/585—Anti-side-tone circuits implemented without inductive element

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
IT21844/82A 1981-06-15 1982-06-14 Rete vocale elettronica per sottostazioni di abbonati telefonici IT1153526B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/273,700 US4400588A (en) 1981-06-15 1981-06-15 Electronic voice network for a telephone subscriber's substation

Publications (2)

Publication Number Publication Date
IT8221844A0 IT8221844A0 (it) 1982-06-14
IT1153526B true IT1153526B (it) 1987-01-14

Family

ID=23045045

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21844/82A IT1153526B (it) 1981-06-15 1982-06-14 Rete vocale elettronica per sottostazioni di abbonati telefonici

Country Status (6)

Country Link
US (1) US4400588A (it)
JP (1) JPS57212853A (it)
AU (1) AU547301B2 (it)
BE (1) BE893498A (it)
CA (1) CA1186084A (it)
IT (1) IT1153526B (it)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8200666A (nl) * 1982-02-19 1983-09-16 Philips Nv Transmissieschakeling voor een elektronisch telefoontoestel.
US4495382A (en) * 1982-04-23 1985-01-22 Fairchild Camera And Instrument Corporation Telephone regulator circuitry
DE3237681C2 (de) * 1982-10-12 1986-03-27 Standard Elektrik Lorenz Ag, 7000 Stuttgart Speiseschaltung für einen veränderlichen Verbraucherwiderstand und mit unterschiedlich wirkendem Ausgangswiderstand
US4550226A (en) * 1983-05-02 1985-10-29 Gte Communication Systems Corporation Subscriber's telephone circuit arranged to present constant impedance to a telephone line
US4633217A (en) * 1984-06-04 1986-12-30 Yamatake Honeywell Communication apparatus
KR0143313B1 (ko) * 1995-07-08 1998-08-01 김광호 키폰시스템에서의 밸런스 네트워크
US6529450B1 (en) * 1998-08-03 2003-03-04 Dictaphone Corporation Hand microphone interfaced to game controller port of personal computer
US6763107B1 (en) * 1999-11-02 2004-07-13 Agere Systems Inc. Method and apparatus for reducing distortion in a line powered modulator circuit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1350205A (en) * 1970-07-24 1974-04-18 Post Office Telephone subscribers instrument circuits
JPS5356903A (en) * 1976-11-02 1978-05-23 Nippon Telegr & Teleph Corp <Ntt> Automatic level control circuit for telephone set
US4332984A (en) * 1979-12-13 1982-06-01 Bell Telephone Laboratories, Incorporated Active speech network circuit for a telephone set

Also Published As

Publication number Publication date
AU8315882A (en) 1982-12-23
JPS57212853A (en) 1982-12-27
US4400588A (en) 1983-08-23
BE893498A (fr) 1982-10-01
AU547301B2 (en) 1985-10-17
CA1186084A (en) 1985-04-23
IT8221844A0 (it) 1982-06-14

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