_{video conferencing}

• _{Necessary bandwidth}
• _{need more than 90 megabits per second}
• _{need two 45 Mbps T-3 circuits}
• _{the above not generally available now}
• _{how is this dilemma solved? (next slide)}
• _{Two solutions}
• _{reduce transmitted video info}
• _{compress video}
• _{interframe coding sends only changed portions of video frame}
• _{motion compensation - sends how to move an image rather than its movements}
• _multipoint
• _{various flavors permit more than two sites to communicate}
• _{video conferencing platforms}
• _{pc <10k}
• _{pc/windows <20k}
• _{tabletop <20k}
• _{lan-based 30-100+k}
• _{rooms/systems 15-100k}
• _{bandwidth requirements}
• _{excellent summary chart on page 515}
• _{note bits per second}
• _{note bits per second requirements for a given service}

_imaging

• _Definition
• _{fig. 11-14 describes the possibilities in today's environment}
• _{workflow software}
• _{network impact}
• _{lets look at the imaging network bandwidth demand calculations in fig 11-15}
• _{LAN based imaging systems}
• _{fig 11-17}
• _{clients,input,software,operating systems,output,storage}