GB2100094A - TDM conference circuit - Google Patents

TDM conference circuit Download PDF

Info

Publication number
GB2100094A
GB2100094A GB8211154A GB8211154A GB2100094A GB 2100094 A GB2100094 A GB 2100094A GB 8211154 A GB8211154 A GB 8211154A GB 8211154 A GB8211154 A GB 8211154A GB 2100094 A GB2100094 A GB 2100094A
Authority
GB
United Kingdom
Prior art keywords
signal
output
pcm
conference
input
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.)
Withdrawn
Application number
GB8211154A
Other languages
English (en)
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.)
Italtel SpA
Original Assignee
Italtel SpA
Italtel Societa Italiana Telecomunicazioni SpA
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 Italtel SpA, Italtel Societa Italiana Telecomunicazioni SpA filed Critical Italtel SpA
Publication of GB2100094A publication Critical patent/GB2100094A/en
Withdrawn legal-status Critical Current

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)
  • Telephonic Communication Services (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Time-Division Multiplex Systems (AREA)
GB8211154A 1981-04-16 1982-04-16 TDM conference circuit Withdrawn GB2100094A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8121227A IT1211024B (it) 1981-04-16 1981-04-16 Circuito conferenza per centrali telefoniche di commutazione di tipo numerico.

Publications (1)

Publication Number Publication Date
GB2100094A true GB2100094A (en) 1982-12-15

Family

ID=11178683

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8211154A Withdrawn GB2100094A (en) 1981-04-16 1982-04-16 TDM conference circuit

Country Status (9)

Country Link
BR (1) BR8202162A (fr)
DE (1) DE3214099A1 (fr)
ES (1) ES8303858A1 (fr)
FR (1) FR2504333A1 (fr)
GB (1) GB2100094A (fr)
GR (1) GR76042B (fr)
IT (1) IT1211024B (fr)
PT (1) PT74762B (fr)
YU (1) YU80382A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2183965A (en) * 1985-12-10 1987-06-10 Weng Pu San Circuit structure of teleconference
GB2239580A (en) * 1989-11-27 1991-07-03 Matsushita Electric Ind Co Ltd Key telephone system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4190744A (en) * 1978-06-05 1980-02-26 Siemens Aktiengesellschaft Circuit arrangement and process for producing conference connections between three conference parties in a PCM time multiplex switching system
US4224688A (en) * 1978-10-30 1980-09-23 Northern Telecom Limited Digital conference circuit
DE3005739C2 (de) * 1980-02-15 1988-11-10 Nixdorf Computer Ag, 4790 Paderborn Verfahren zur Steuerung der Übertragung von PCM-Signalen zwischen Anschlußstellen eines PCM-Zeitmultiplex-Fernmeldenetzes in einem Konferenzbetrieb und Schaltungsanordnung zur Druchführung des Verfahrens

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2183965A (en) * 1985-12-10 1987-06-10 Weng Pu San Circuit structure of teleconference
GB2239580A (en) * 1989-11-27 1991-07-03 Matsushita Electric Ind Co Ltd Key telephone system
US5128989A (en) * 1989-11-27 1992-07-07 Matsushita Electric Industrial Co., Ltd. Key telephone system with circuitry for adding a third caller to a multiple party connection
GB2239580B (en) * 1989-11-27 1994-08-31 Matsushita Electric Ind Co Ltd Key telephone system

Also Published As

Publication number Publication date
DE3214099A1 (de) 1982-11-18
BR8202162A (pt) 1983-03-29
ES511385A0 (es) 1983-03-01
PT74762B (en) 1983-11-30
FR2504333A1 (fr) 1982-10-22
ES8303858A1 (es) 1983-03-01
PT74762A (en) 1982-05-01
GR76042B (fr) 1984-08-03
IT8121227A0 (it) 1981-04-16
IT1211024B (it) 1989-09-29
YU80382A (en) 1985-03-20

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)