IT1081194B - Circuito collettivo per telefonia modulata ad impulsi codificati - Google Patents

Circuito collettivo per telefonia modulata ad impulsi codificati

Info

Publication number
IT1081194B
IT1081194B IT7726177A IT2617777A IT1081194B IT 1081194 B IT1081194 B IT 1081194B IT 7726177 A IT7726177 A IT 7726177A IT 2617777 A IT2617777 A IT 2617777A IT 1081194 B IT1081194 B IT 1081194B
Authority
IT
Italy
Prior art keywords
coded pulses
collective circuit
modulated telephone
modulated
telephone
Prior art date
Application number
IT7726177A
Other languages
English (en)
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
Application granted granted Critical
Publication of IT1081194B publication Critical patent/IT1081194B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/568—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants
    • H04M3/569—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants using the instant speaker's algorithm

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
IT7726177A 1976-07-28 1977-07-27 Circuito collettivo per telefonia modulata ad impulsi codificati IT1081194B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/709,580 US4022981A (en) 1976-07-28 1976-07-28 Conference circuit for pulse coded modulated telephony

Publications (1)

Publication Number Publication Date
IT1081194B true IT1081194B (it) 1985-05-16

Family

ID=24850446

Family Applications (1)

Application Number Title Priority Date Filing Date
IT7726177A IT1081194B (it) 1976-07-28 1977-07-27 Circuito collettivo per telefonia modulata ad impulsi codificati

Country Status (4)

Country Link
US (1) US4022981A (it)
BE (1) BE857139A (it)
CA (1) CA1073994A (it)
IT (1) IT1081194B (it)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4054755A (en) * 1976-10-14 1977-10-18 Gte Automatic Electric Laboratories Incorporated Conference circuit for pulse coded modulated telephony
US4175215A (en) * 1977-12-05 1979-11-20 Gte Automatic Electric Laboratories Incorporated Multiport conference circuit
US4267593A (en) * 1979-06-15 1981-05-12 Wescom Switching, Inc. Method and means for digital conferencing
US4388717A (en) * 1981-01-14 1983-06-14 International Telephone And Telegraph Corporation Conference circuit for PCM system
US4475190A (en) * 1982-05-27 1984-10-02 At&T Bell Laboratories Method and apparatus for controlling ports in a digital conference arrangement
US4479211A (en) * 1982-10-29 1984-10-23 At&T Bell Laboratories Method and apparatus for controlling ports in a digital conference arrangement
US5729687A (en) * 1993-12-20 1998-03-17 Intel Corporation System for sending differences between joining meeting information and public meeting information between participants in computer conference upon comparing annotations of joining and public meeting information
US5436896A (en) * 1994-03-17 1995-07-25 At&T Corp. Conference bridge for packetized speech-signal networks
US7599834B2 (en) * 2005-11-29 2009-10-06 Dilithium Netowkrs, Inc. Method and apparatus of voice mixing for conferencing amongst diverse networks

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3699264A (en) * 1971-03-02 1972-10-17 Gte Automatic Electric Lab Inc Conference circuit for pulse code modulated telephony
US3787630A (en) * 1972-07-31 1974-01-22 Bell Telephone Labor Inc Time division communication system
US3796833A (en) * 1972-07-31 1974-03-12 Bell Telephone Labor Inc Time division communication system
US3761624A (en) * 1972-07-31 1973-09-25 Bell Telephone Labor Inc Time division signal transfer network

Also Published As

Publication number Publication date
BE857139A (fr) 1977-11-14
US4022981A (en) 1977-05-10
CA1073994A (en) 1980-03-18

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