ES511385A0 - "IMPROVEMENTS IN THE CONFERENCE CIRCUITS FOR SWITCHING TELEPHONE CENTRALS". - Google Patents

"IMPROVEMENTS IN THE CONFERENCE CIRCUITS FOR SWITCHING TELEPHONE CENTRALS".

Info

Publication number: ES511385A0
Authority: ES; Spain
Prior art keywords: switching telephone; conference circuits; centrals; telephone centrals; conference
Prior art date: 1981-04-16
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.): Granted

Application number

ES511385A

Other languages

Spanish (es)

Other versions

ES8303858A1 (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.)

1981-04-16

Filing date

1982-04-13

Publication date

1983-03-01

1982-04-13 Application filed by Italtel SpA, Italtel Societa Italiana Telecomunicazioni SpA filed Critical Italtel SpA

1983-03-01 Publication of ES511385A0 publication Critical patent/ES511385A0/en

1983-03-01 Publication of ES8303858A1 publication Critical patent/ES8303858A1/en

Status Expired 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)

ES511385A 1981-04-16 1982-04-13 TDM conference circuit Expired ES8303858A1 (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
IT8121227A IT1211024B (en)	1981-04-16	1981-04-16	CONFERENCE CIRCUIT FOR NUMERIC TYPE TELEPHONE SWITCHING UNITS.

Publications (2)

Publication Number	Publication Date
ES511385A0 true ES511385A0 (en)	1983-03-01
ES8303858A1 ES8303858A1 (en)	1983-03-01

Family

ID=11178683

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ES511385A Expired ES8303858A1 (en)	1981-04-16	1982-04-13	TDM conference circuit

Country Status (9)

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

Families Citing this family (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
JPH03166894A (en) *	1989-11-27	1991-07-18	Matsushita Electric Ind Co Ltd	button telephone device
USD502877S1 (en)	2003-08-11	2005-03-15	Stokely-Van Camp, Inc.	Bottle portion
USD530619S1 (en)	2003-08-11	2006-10-24	Stokley-Van Camp, Inc.	Bottle portion

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 (en) *	1980-02-15	1988-11-10	Nixdorf Computer Ag, 4790 Paderborn	Method for controlling the transmission of PCM signals between connection points of a PCM time division multiplex telecommunications network in a conference operation and circuit arrangement for carrying out the method

1981
- 1981-04-16 IT IT8121227A patent/IT1211024B/en active
1982
- 1982-04-06 GR GR67823A patent/GR76042B/el unknown
- 1982-04-13 YU YU00803/82A patent/YU80382A/en unknown
- 1982-04-13 ES ES511385A patent/ES8303858A1/en not_active Expired
- 1982-04-15 PT PT74762A patent/PT74762B/en unknown
- 1982-04-15 BR BR8202162A patent/BR8202162A/en unknown
- 1982-04-15 FR FR8206512A patent/FR2504333A1/fr not_active Withdrawn
- 1982-04-16 DE DE19823214099 patent/DE3214099A1/en not_active Withdrawn
- 1982-04-16 GB GB8211154A patent/GB2100094A/en not_active Withdrawn

Also Published As

Publication number	Publication date
BR8202162A (en)	1983-03-29
GB2100094A (en)	1982-12-15
IT1211024B (en)	1989-09-29
GR76042B (en)	1984-08-03
YU80382A (en)	1985-03-20
IT8121227A0 (en)	1981-04-16
FR2504333A1 (en)	1982-10-22
PT74762A (en)	1982-05-01
ES8303858A1 (en)	1983-03-01
PT74762B (en)	1983-11-30
DE3214099A1 (en)	1982-11-18

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