IT1154391B - Metodo e disposizione circuitale per realizzare una comunicazione in conferenza in un sistema di commutazione telfonica digitale - Google Patents
Metodo e disposizione circuitale per realizzare una comunicazione in conferenza in un sistema di commutazione telfonica digitaleInfo
- Publication number
- IT1154391B IT1154391B IT24552/82A IT2455282A IT1154391B IT 1154391 B IT1154391 B IT 1154391B IT 24552/82 A IT24552/82 A IT 24552/82A IT 2455282 A IT2455282 A IT 2455282A IT 1154391 B IT1154391 B IT 1154391B
- Authority
- IT
- Italy
- Prior art keywords
- speech samples
- switching system
- telephone switching
- digital telephone
- participants
- Prior art date
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
-
- 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
- H04M3/561—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities by multiplexing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephonic Communication Services (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Mobile Radio Communication Systems (AREA)
- Control Of El Displays (AREA)
- Time-Division Multiplex Systems (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Interface Circuits In Exchanges (AREA)
- Gyroscopes (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Exchange Systems With Centralized Control (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3148886A DE3148886C1 (de) | 1981-12-10 | 1981-12-10 | Verfahren und Schaltungsanordnung zum Herstellen einer Konferenzverbindung |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| IT8224552A0 IT8224552A0 (it) | 1982-12-02 |
| IT8224552A1 IT8224552A1 (it) | 1984-06-02 |
| IT1154391B true IT1154391B (it) | 1987-01-21 |
Family
ID=6148353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT24552/82A IT1154391B (it) | 1981-12-10 | 1982-12-02 | Metodo e disposizione circuitale per realizzare una comunicazione in conferenza in un sistema di commutazione telfonica digitale |
Country Status (29)
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3329779C2 (de) * | 1983-08-18 | 1985-06-27 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Verfahren und Schaltungsanordnung zur Herstellung von Konferenzverbindungen in einem Vermittlungssystem |
| JPS60148263A (ja) * | 1984-01-12 | 1985-08-05 | Nippon Telegr & Teleph Corp <Ntt> | 会議電話方式 |
| JPS60204158A (ja) * | 1984-03-29 | 1985-10-15 | Nippon Telegr & Teleph Corp <Ntt> | 会議電話方式 |
| DE3427303A1 (de) * | 1984-07-20 | 1986-01-30 | Siemens AG, 1000 Berlin und 8000 München | Konferenzschaltung fuer digitale kommunikationssysteme |
| US4606021A (en) * | 1984-08-17 | 1986-08-12 | Itt Corporation | Digital conference circuit |
| JPS6190565A (ja) * | 1984-10-11 | 1986-05-08 | Iwatsu Electric Co Ltd | 会議通話方式 |
| US4648089A (en) * | 1984-10-29 | 1987-03-03 | Gte Laboratories, Inc. | Digital voice summing for teleconferencing |
| US4658398A (en) * | 1984-10-29 | 1987-04-14 | Gte Laboratories Incorporated | Framed digital voice summing for teleconferencing |
| US4686512A (en) * | 1985-03-01 | 1987-08-11 | Kabushiki Kaisha Toshiba | Integrated digital circuit for processing speech signal |
| US4716585A (en) * | 1985-04-05 | 1987-12-29 | Datapoint Corporation | Gain switched audio conferencing network |
| KR960705440A (ko) * | 1994-08-04 | 1996-10-09 | 존 엠. 클락 3세 | 음성 압축을 사용하는 통신 시스템에서의 회의 통화를 수행하는 시스템 및 방법(system and method for conducting conference calls in a communication system utilizing voice compression) |
| US5483588A (en) * | 1994-12-23 | 1996-01-09 | Latitute Communications | Voice processing interface for a teleconference system |
| JP2007096555A (ja) * | 2005-09-28 | 2007-04-12 | Nec Corp | 音声会議システム、端末装置及びそれに用いる話者優先レベル制御方法並びにそのプログラム |
| US20070266092A1 (en) * | 2006-05-10 | 2007-11-15 | Schweitzer Edmund O Iii | Conferencing system with automatic identification of speaker |
| CN102598644B (zh) * | 2009-11-06 | 2015-05-27 | 飞思卡尔半导体公司 | 会议电话系统以及方法 |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1301905A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1970-06-04 | 1973-01-04 | ||
| US3883697A (en) * | 1973-10-18 | 1975-05-13 | Itt | Digital conference circuit |
| US3937898A (en) * | 1974-07-18 | 1976-02-10 | International Telephone And Telegraph Corporation | Digital conference bridge |
| DE2445094C3 (de) * | 1974-09-20 | 1978-11-02 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Verfahren zur Herstellung von Konferenzverbindungen in einer PCM-Zeitmultiplex-Fernsprechvermittlungsanlage |
| US3984643A (en) * | 1975-04-24 | 1976-10-05 | Northern Electric Company Limited | Method and apparatus for establishing a plurality of simultaneous conferences in a PCM switching system |
| FR2332663A1 (fr) * | 1975-11-20 | 1977-06-17 | Labo Cent Telecommunicat | Circuit de conference pour reseau de commutation mic |
| US4076966A (en) * | 1976-08-02 | 1978-02-28 | Societa Italiana Telecomunicazioni Siemens S.P.A. | Method of and system for handling conference calls in digital telephone exchange |
| US4054757A (en) * | 1976-12-13 | 1977-10-18 | International Standard Electric Corporation | Conference circuit using PCM techniques |
| US4109111A (en) * | 1977-08-23 | 1978-08-22 | Digital Switch Corporation | Method and apparatus for establishing conference calls in a time division multiplex pulse code modulation switching system |
| US4153817A (en) * | 1977-11-25 | 1979-05-08 | Stromberg-Carlson Corporation | Digital conference circuit |
| US4190742A (en) * | 1978-06-05 | 1980-02-26 | Siemens Aktiengesellschaft | Process and apparatus for producing conference connections in a PCM time multiplex switching system |
| US4267593A (en) * | 1979-06-15 | 1981-05-12 | Wescom Switching, Inc. | Method and means for digital conferencing |
| JPS56157164A (en) * | 1980-05-07 | 1981-12-04 | Nec Corp | Conference system |
| US4387457A (en) * | 1981-06-12 | 1983-06-07 | Northern Telecom Limited | Digital conference circuit and method |
-
1981
- 1981-12-10 DE DE3148886A patent/DE3148886C1/de not_active Expired
-
1982
- 1982-11-06 AU AU91131/82A patent/AU553691B2/en not_active Ceased
- 1982-11-26 NZ NZ202626A patent/NZ202626A/en unknown
- 1982-11-30 US US06/445,629 patent/US4488291A/en not_active Expired - Lifetime
- 1982-12-01 ZA ZA828846A patent/ZA828846B/xx unknown
- 1982-12-02 IT IT24552/82A patent/IT1154391B/it active
- 1982-12-03 TR TR21922A patent/TR21922A/xx unknown
- 1982-12-06 NO NO824084A patent/NO157839C/no unknown
- 1982-12-07 EP EP82111333A patent/EP0081799B1/de not_active Expired
- 1982-12-07 DD DD82245652A patent/DD209555A5/de not_active IP Right Cessation
- 1982-12-07 BR BR8207094A patent/BR8207094A/pt unknown
- 1982-12-07 FI FI824200A patent/FI824200L/fi not_active Application Discontinuation
- 1982-12-07 PH PH28240A patent/PH20311A/en unknown
- 1982-12-07 DE DE8282111333T patent/DE3278453D1/de not_active Expired
- 1982-12-07 HU HU823914A patent/HU184592B/hu unknown
- 1982-12-07 KR KR8205491A patent/KR880002168B1/ko not_active Expired
- 1982-12-07 AT AT82111333T patent/ATE34058T1/de not_active IP Right Cessation
- 1982-12-08 RO RO82109259A patent/RO84971A/ro unknown
- 1982-12-09 YU YU2728/82A patent/YU43810B/xx unknown
- 1982-12-09 GR GR70030A patent/GR77104B/el unknown
- 1982-12-09 SU SU823522504A patent/SU1210677A3/ru active
- 1982-12-09 JP JP57214754A patent/JPS58150357A/ja active Granted
- 1982-12-09 CA CA000417379A patent/CA1206237A/en not_active Expired
- 1982-12-10 MX MX195550A patent/MX151911A/es unknown
- 1982-12-10 ES ES518084A patent/ES8308667A1/es not_active Expired
- 1982-12-10 BE BE2/59949A patent/BE895315A/fr not_active IP Right Cessation
- 1982-12-10 PL PL1982239455A patent/PL141213B1/pl unknown
-
1983
- 1983-02-26 IN IN240/CAL/83A patent/IN157468B/en unknown
-
1989
- 1989-01-13 SG SG28/89A patent/SG2889G/en unknown
-
1990
- 1990-08-30 HK HK679/90A patent/HK67990A/xx not_active IP Right Cessation
Also Published As
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19971128 |