GB2319138B - Teleconferencing system - Google Patents

Teleconferencing system

Info

Publication number
GB2319138B
GB2319138B GB9802092A GB9802092A GB2319138B GB 2319138 B GB2319138 B GB 2319138B GB 9802092 A GB9802092 A GB 9802092A GB 9802092 A GB9802092 A GB 9802092A GB 2319138 B GB2319138 B GB 2319138B
Authority
GB
United Kingdom
Prior art keywords
video
audio
data
workstations
wan
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.)
Expired - Lifetime
Application number
GB9802092A
Other versions
GB2319138A (en
GB9802092D0 (en
Inventor
Lester F Ludwig
Chris J Lauwers
Keith A Lantz
Gerald J Burnett
Emmett R Burns
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.)
Vicor Inc
Original Assignee
Vicor 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
Priority to US08/131,523 priority Critical patent/US5689641A/en
Application filed by Vicor Inc filed Critical Vicor Inc
Priority to GB9410665A priority patent/GB2282506B/en
Publication of GB9802092D0 publication Critical patent/GB9802092D0/en
Publication of GB2319138A publication Critical patent/GB2319138A/en
Application granted granted Critical
Publication of GB2319138B publication Critical patent/GB2319138B/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/80QoS aspects
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06QDATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00Administration; Management
    • G06Q10/10Office automation, e.g. computer aided management of electronic mail or groupware; Time management, e.g. calendars, reminders, meetings or time accounting
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/16Arrangements for providing special services to substations
    • H04L12/18Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/1813Arrangements for providing special services to substations for broadcast or conference, e.g. multicast for computer conferences, e.g. chat rooms
    • H04L12/1827Network arrangements for conference optimisation or adaptation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L29/00Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00
    • H04L29/02Communication control; Communication processing
    • H04L29/06Communication control; Communication processing characterised by a protocol
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L29/00Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00
    • H04L29/02Communication control; Communication processing
    • H04L29/06Communication control; Communication processing characterised by a protocol
    • H04L29/0602Protocols characterised by their application
    • H04L29/06027Protocols for multimedia communication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/40Services or applications
    • H04L65/403Arrangements for multiparty communication, e.g. conference
    • H04L65/4038Arrangements for multiparty communication, e.g. conference with central floor control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/14Network-specific arrangements or communication protocols supporting networked applications for session management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/36Network-specific arrangements or communication protocols supporting networked applications involving the display of network or application conditions affecting the network application to the application user
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/50Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers ; Centralised arrangements for recording messages
    • H04M3/53Centralised arrangements for recording incoming messages, i.e. mailbox systems
    • H04M3/5307Centralised arrangements for recording incoming messages, i.e. mailbox systems for recording messages comprising any combination of audio and non-audio components
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/56Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/563User guidance or feature selection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/56Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/567Multimedia conference systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/14Systems for two-way working
    • H04N7/141Systems for two-way working between two video terminals, e.g. videophone
    • H04N7/147Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/14Systems for two-way working
    • H04N7/141Systems for two-way working between two video terminals, e.g. videophone
    • H04N7/148Interfacing a video terminal to a particular transmission medium, e.g. ISDN
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/14Systems for two-way working
    • H04N7/15Conference systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/14Systems for two-way working
    • H04N7/15Conference systems
    • H04N7/152Multipoint control units therefor
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/16Arrangements for providing special services to substations
    • H04L12/18Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/1836Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with heterogeneous network architecture
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/16Arrangements for providing special services to substations
    • H04L12/18Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/185Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with management of multicast group membership
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M2201/00Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/42Graphical user interfaces
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M2203/00Aspects of automatic or semi-automatic exchanges
    • H04M2203/20Aspects of automatic or semi-automatic exchanges related to features of supplementary services
    • H04M2203/2044Group features, e.g. closed user group
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M2203/00Aspects of automatic or semi-automatic exchanges
    • H04M2203/50Aspects of automatic or semi-automatic exchanges related to audio conference
    • H04M2203/5009Adding a party to an existing conference
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M2203/00Aspects of automatic or semi-automatic exchanges
    • H04M2203/50Aspects of automatic or semi-automatic exchanges related to audio conference
    • H04M2203/5018Initiating a conference during a two-party conversation, i.e. three-party-service or three-way-call
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/42221Conversation recording systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/42314Systems providing special services or facilities to subscribers in private branch exchanges
    • H04M3/42323PBX's with CTI arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/428Arrangements for placing incoming calls on hold
    • H04M3/4285Notifying, informing or entertaining a held party while on hold, e.g. Music On Hold
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/487Arrangements for providing information services, e.g. recorded voice services, time announcements
    • H04M3/493Interactive information services, e.g. directory enquiries ; Arrangements therefor, e.g. interactive voice response [IVR] systems or voice portals
    • H04M3/4931Directory assistance systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M7/00Interconnection arrangements between switching centres
    • H04M7/006Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M7/00Interconnection arrangements between switching centres
    • H04M7/12Interconnection arrangements between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step, decimal and non-decimal, circuit-switched and packet-switched, i.e. gateway arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q2213/00Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1305Software aspects
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q2213/00Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13093Personal computer, PC
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q2213/00Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13175Graphical user interface [GUI], WWW interface, visual indication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q2213/00Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1319Amplifier, attenuation circuit, echo suppressor
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q2213/00Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1322PBX
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q2213/00Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1324Conference call
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q2213/00Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1326Consultation call, broker's call, call hold, toggling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q2213/00Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1332Logic circuits
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q2213/00Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13337Picturephone, videotelephony
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q2213/00Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13389LAN, internet

Abstract

A teleconferencing system that integrates separate real-time and asynchronous networks the former for real-time audio and video, and the latter for control signals and textual, graphical and other data - in a manner which closely approximates the experience of face-to-face collaboration. The system provides an audio/video (AV) path 13 for carrying AV signal among the workstations, a video mosaic generator (36) for combining images, and an audio summer or mixer 38. The system architecture is readily scalable to the largest enterprise network environments. It accommodates differing levels of collaborative capabilities available to individual users and permits high-quality audio and video capabilities(Figs 2A,2B,8C) to be readily superimposed onto existing personal computers and workstations 12 and their interconnecting LANs 10 and WANs 15. In the case of a plurality of geographically dispersed LANs 10 interconnected by a WAN 15, the demands made on the WAN are significantly reduced by employing multi-hopping techniques, including avoiding the unnecessary decompression of data at intermediate hops, as well as video mosaicing and cut-and-paste technology. This application discloses separate data and video network paths as well as the facility for storing and forwarding multimedia mail messages.
GB9802092A 1993-10-01 1994-05-27 Teleconferencing system Expired - Lifetime GB2319138B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US08/131,523 US5689641A (en) 1993-10-01 1993-10-01 Multimedia collaboration system arrangement for routing compressed AV signal through a participant site without decompressing the AV signal
GB9410665A GB2282506B (en) 1993-10-01 1994-05-27 Teleconferencing system

Publications (3)

Publication Number Publication Date
GB9802092D0 GB9802092D0 (en) 1998-03-25
GB2319138A GB2319138A (en) 1998-05-13
GB2319138B true GB2319138B (en) 1998-06-24

Family

ID=26304951

Family Applications (4)

Application Number Title Priority Date Filing Date
GB9802092A Expired - Lifetime GB2319138B (en) 1993-10-01 1994-05-27 Teleconferencing system
GB9802081A Expired - Lifetime GB2319135B (en) 1993-10-01 1994-05-27 Teleconferencing system
GB9802089A Expired - Lifetime GB2319137B (en) 1993-10-01 1994-05-27 Teleconferencing system
GB9802084A Expired - Lifetime GB2319136B (en) 1993-10-01 1994-05-27 Teleconferencing system

Family Applications After (3)

Application Number Title Priority Date Filing Date
GB9802081A Expired - Lifetime GB2319135B (en) 1993-10-01 1994-05-27 Teleconferencing system
GB9802089A Expired - Lifetime GB2319137B (en) 1993-10-01 1994-05-27 Teleconferencing system
GB9802084A Expired - Lifetime GB2319136B (en) 1993-10-01 1994-05-27 Teleconferencing system

Country Status (1)

Country Link
GB (4) GB2319138B (en)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1046600A (en) * 1999-05-14 2000-12-05 Monica Socias Gili Multiple telecommunications machine for common, public and/or private use
ES2172378B1 (en) * 1999-05-14 2003-12-16 Gili Monica Socias Private machine common use multiple telecommunications, public and / or
AU6137400A (en) * 1999-10-04 2001-04-05 Actv, Inc. Enhanced video programming apparatus and method providing a shared whiteboard
US6832245B1 (en) 1999-12-01 2004-12-14 At&T Corp. System and method for analyzing communications of user messages to rank users and contacts based on message content
US6678719B1 (en) * 1999-12-20 2004-01-13 Mediaone Group, Inc. Virtual workplace intercommunication tool
CA2336577A1 (en) * 2000-02-16 2001-08-16 Siemens Corporate Research, Inc. Systems and methods for generating and playback of annotated multimedia presentation
CN100401733C (en) 2000-03-17 2008-07-09 美国在线服务公司 On time speech information
US8122363B1 (en) 2000-05-04 2012-02-21 Aol Inc. Presence status indicator
US9043418B2 (en) 2000-05-04 2015-05-26 Facebook, Inc. Systems and methods for instant messaging persons referenced in an electronic message
US9100221B2 (en) 2000-05-04 2015-08-04 Facebook, Inc. Systems for messaging senders and recipients of an electronic message
US8132110B1 (en) 2000-05-04 2012-03-06 Aol Inc. Intelligently enabled menu choices based on online presence state in address book
US6912564B1 (en) 2000-05-04 2005-06-28 America Online, Inc. System for instant messaging the sender and recipients of an e-mail message
US9356894B2 (en) 2000-05-04 2016-05-31 Facebook, Inc. Enabled and disabled menu choices based on presence state
US7979802B1 (en) 2000-05-04 2011-07-12 Aol Inc. Providing supplemental contact information corresponding to a referenced individual
US8001190B2 (en) 2001-06-25 2011-08-16 Aol Inc. Email integrated instant messaging
DE60144233D1 (en) 2000-07-25 2011-04-28 America Online Inc Video messaging
US6961754B2 (en) 2001-01-12 2005-11-01 Telefonaktiebolaget Lm Ericsson Interactive access, manipulation, sharing and exchange of multimedia data
DE10138267A1 (en) * 2001-08-03 2003-02-20 Siemens Ag A method and terminal for multipoint communication
US7774711B2 (en) 2001-09-28 2010-08-10 Aol Inc. Automatic categorization of entries in a contact list
US7512652B1 (en) 2001-09-28 2009-03-31 Aol Llc, A Delaware Limited Liability Company Passive personalization of buddy lists
JP2004032372A (en) * 2002-06-26 2004-01-29 Fuji Photo Film Co Ltd Image data processing method, portable terminal device and program
US7362349B2 (en) 2002-07-10 2008-04-22 Seiko Epson Corporation Multi-participant conference system with controllable content delivery using a client monitor back-channel
CN1268122C (en) * 2002-07-23 2006-08-02 精工爱普生株式会社 Display method, and a projector
US9742615B1 (en) 2002-12-31 2017-08-22 Aol Inc. Popularity index
US7263614B2 (en) 2002-12-31 2007-08-28 Aol Llc Implicit access for communications pathway
US7603417B2 (en) 2003-03-26 2009-10-13 Aol Llc Identifying and using identities deemed to be known to a user
US7945674B2 (en) 2003-04-02 2011-05-17 Aol Inc. Degrees of separation for handling communications
US20040230655A1 (en) * 2003-05-16 2004-11-18 Chia-Hsin Li Method and system for media playback architecture
US7558221B2 (en) 2004-02-13 2009-07-07 Seiko Epson Corporation Method and system for recording videoconference data
US8635273B2 (en) 2004-03-05 2014-01-21 Aol Inc. Announcing new users of an electronic communications system to existing users
US8595146B1 (en) 2004-03-15 2013-11-26 Aol Inc. Social networking permissions
US8275109B2 (en) 2009-03-31 2012-09-25 International Business Machines Corporation Administering participant attendance of teleconferences
US8391455B2 (en) 2010-03-17 2013-03-05 Avaya Inc. Method and system for live collaborative tagging of audio conferences

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4686698A (en) * 1985-04-08 1987-08-11 Datapoint Corporation Workstation for interfacing with a video conferencing network
US4953159A (en) * 1989-01-03 1990-08-28 American Telephone And Telegraph Company Audiographics conferencing arrangement
WO1992021211A1 (en) * 1991-05-21 1992-11-26 Videotelecom Corp. A multiple medium message recording system
WO1994024803A1 (en) * 1993-04-22 1994-10-27 At & T Corp. Multimedia telecommunications network and service

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2484747B1 (en) * 1980-06-11 1983-11-25 Faye Andre
JPS61158257A (en) * 1984-12-29 1986-07-17 Hashimoto Corp Telephone operating system during reception of videotex
US5305097A (en) * 1989-12-20 1994-04-19 Canon Kabushiki Kaisha Communicating apparatus having a calling party number display device
JP3292248B2 (en) * 1991-05-29 2002-06-17 富士通株式会社 Teleconferencing system
EP0535601B1 (en) * 1991-09-30 1997-09-10 Siemens Aktiengesellschaft Method for the establishment of conference connections in a processor controlled communication system
US5373549A (en) * 1992-12-23 1994-12-13 At&T Corp. Multi-level conference management and notification

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4686698A (en) * 1985-04-08 1987-08-11 Datapoint Corporation Workstation for interfacing with a video conferencing network
US4953159A (en) * 1989-01-03 1990-08-28 American Telephone And Telegraph Company Audiographics conferencing arrangement
WO1992021211A1 (en) * 1991-05-21 1992-11-26 Videotelecom Corp. A multiple medium message recording system
WO1994024803A1 (en) * 1993-04-22 1994-10-27 At & T Corp. Multimedia telecommunications network and service

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IEICE Transactions, Vol .E74, no 9, September 1991, pages 2765-2770 *

Also Published As

Publication number Publication date
GB2319138A (en) 1998-05-13
GB9802089D0 (en) 1998-03-25
GB9802081D0 (en) 1998-03-25
GB2319137B (en) 1998-06-24
GB2319136B (en) 1998-06-24
GB9802092D0 (en) 1998-03-25
GB2319135A (en) 1998-05-13
GB2319136A (en) 1998-05-13
GB2319137A (en) 1998-05-13
GB2319135B (en) 1998-06-24
GB9802084D0 (en) 1998-03-25

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732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
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732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

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732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

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