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Global connection. Local connections. Video conferencing. Video-conferencing - ?. transmission of image (video) and speech (audio) back and forth between two or more physically separate locations. To enrich communications To access remote locations

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video conferencing1
Video-conferencing - ?
  • transmission of image (video) and speech (audio) back and forth between two or more physically separate locations.
  • To enrich communications
  • To access remote locations
  • To bring together people and groups for discussion
v c examples of use
V-C - Examples of use
  • Distance Education
  • Counselling
  • Cross organisational meetings
  • Foreign language/cultural exchange
  • Individual or group discussions
  • Interviews – jobs and viva
  • Observation of limited access locations
vc target audience
VC – Target audience
  • VC technology easier and inexpensive
  • To all users with basic desk top/windows skills
  • H323 – ITU umbrella standard
  • terminals, gateways, gatekeepers, and multi-point control units.
  • To enable interoperability
vc basic ingredients
VC – basic ingredients
  • Terminal end stations or clients
  • Peripheral sets – cameras, speakers, mic’s
  • Workstations – windows (some mac) unix
  • High speed network connections – 128Kpbs
  • IP addresses for workstations
  • MCU (optional)
vc connections
VC - connections
  • ISDN – Integrated services digital Network
  • System of digital phone connections allowing simultaneous data transmission
  • Voice and data carried via B channels
  • Via 64 Kb/s

Basic Rate Interface – BRI = 64Kb/s B chann

Primary Rate Interface- PRI =144Kb/s D chann

vc connections1
VC - Connections
  • To access BRI service
  • Subscribe to ISDN phone line
  • Customer has to be within 5.5 Km of HQ
  • After that expensive repeaters required
  • To communicate with phone company –
  • ISDN terminal adapters
  • ISDN routers
vc network requirements
VC – Network requirements
  • Data packs must arrive and be sent out to maintain “real time”
  • Low end – 64-128Kbs – OK in general
  • >700 Mb/s more demanding
  • Category 5 plus, horizontal wiring combined with fibre optic vertical wiring
  • Campus desktop via network = hub thus
  • providing a shared ethernet connection – not recommended for VC
vc network
VC - Network
  • Recommend a switched ethernet connection
  • Gives a “private line” no interference with other computers
  • Firewalls - ? Complex within H323
vc room preparation
VC – Room preparation
  • Any suitable small conference room may be adapted
  • Main critical factor LIGHTING
  • To equalise light and eliminate shadows
  • Soft textured wall coverings or smooth
  • Size of room – allow for equipment, wall charts, chairs, desk/table
  • How many people on average in your VC
vc room preparation1
VC – Room preparation
  • Reasonably soundproofed
  • Curtains for windows
  • Camera must be able to see all group
  • Trowt-Bayard, Toby, and Jim R. Wilcox, Video Conferencing The Whole Picture, Flatiron Publishing, Inc., 2nd Edition, March 1997
vc survey of market
VC – survey of market
  • Websites – (cookbook)
  • Discussion lists
  • Conferences
  • Journals
  • Colleagues who already have VC
  • Manufacturers
vc guidelines bids
VC – guidelines - bids
  • Price bids for individual equipment
  • Any training needed?
  • Installation and insulation?
  • Warranty and maintenance costs
  • Any contracts needed – purchase/maintenance
  • Special note if PC’s to be used
vc guidlines
VC - Guidlines
  • Enquire as to near future upgrades
  • Operating system changes ?
  • Will there be a newer system?
  • Will it require hardware changes?
  • Bear the above possibilities in mind when calculating funding
vc components
VC - Components
  • Camera – how will your image appear to others
  • Video display – computer monitor
  • Audio – important to maintain audio
  • Speakers and microphones
  • Add ons – document camera, VCR, DVD, electronic whiteboard interface
uws vc
UWS - VC
  • http://www.swan.ac.uk/media/videocon.htm
  •  5 main studios linked to MCU
  • MCU - a VC 4600 unit
  • Enables up to 8 sites involved in conference
  • PC based + special processor cards
  • Linked to PC in media services
  • Allows multiple sites within conference
  • Multiple conferences concurrently
uws vc1
UWS - VC
  • Main studio holds up to 15
  • Links to campus theatres and seminars
  • Insulated special room
  • Cameras allowing normal transmission and rostrum cam for transmission of documents
  • Electronic whiteboard
  • Networking point to campus and internet
  • Monitors showing incoming images
  • Speaker phones
uws vc examples of use
UWS – VC Examples of use
  • language teaching between Swansea, Liege (Belgium) Strasbourg +other European sites
  • Job interviews with Canada, US, NZ, AU
  • Multipoint conferences with universities
  • Regular post-grad seminars
  • Post-grad Viva interviews
  • Interviews and discussions world wide