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General Educational Technology
Video
Conferencing over a Network - d-Link i2Eye
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d-Lnks
DVC-1000 i2Eye video conferencing system is the simplest way to connect two
remote sites through a network. All that is needed is a network connection, a TV
with line-in, and power, and you're good to go! Full motion, full duplex, and
completely scalable data throughput settings. The video is not as good as the
Polycoms used for the Video-Linked Classrooms, but then, at $280 a pop (as of
11/1/03), it's 1/20th the cost! Here's
how it works:
| Hardware |
One
d-L:ink i2Eye camera per site, hooked to a TV with RCA line-in capability
(will not work with ordinary coax connections - see the discussion
of cables on my Pinnacle
Studio -
Getting Started page for what these look like). The i2Eye also plugs
into an IP network drop. |
| Set-up |
Simply plug it in and turn it on! It will tell you if you
have a good network connection. |
| Configuration |
blah blah blah
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| Connect |
blah blah blah |
| The Conference |
blah
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| Things
affecting quality of the video and sound |
Bandwidth, bandwidth, bandwidth! If you don't know
what bandwidth is by now, you'll be an expert after this! Here's the
possible restrictions:
- Your school connection speed: If you have a
128 kbps line (many elementary schools do), you'll struggle. If you
can get permission, have your STC shut down your proxy server
(effectively ending all Internet traffic) for the duration of the
session, so you can have the pipe to yourself!
- The remote site connection speed: Same story
there - you could have all the bandwidth in the world, and if the
remote site is slow, the session will not go well.
- The KDE Backbone: All IP traffic (including
your iVisit session) that leaves the cozy Fayette County environment
must go through a gateway to the KDE Internet backbone. That gateway
is typically maxed out (running at 100% of capacity) from 9:30 to 2:30
every day. It does not mean that your session won't work, it just
might encounter problems. If you can schedule around this bottleneck
(early morning or later afternoon), you're in better shape. This does not
effect conferences inside of FCPS.
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