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Overview of the ITS NCIH to IP
Video Migration Project
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ITS Video/Multimedia Services (VNS),
which is a part of the North Carolina Office of Information Technology
Services, administers the North Carolina Information Highway (NCIH) videoconferencing
services and the North Carolina Video Over IP (NCVIP) videoconferencing
services. As many of you know in the summer and fall of 2005, VNS migrated
the NCIH community college sites into the NCVIP environment. NCVIP videoconferencing
is based on the Internet Protocol. Some of the high schools
have already made the move to the NCVIP environment. For those of you
who will be migrating in the future, there may be budgetary considerations.
Many High schools still have videoconferencing equipment that
was manufactured by VTEL. The VTEL manufacturer is no longer
producing parts and software for the AppsView(TM) or Galaxy(TM) product
lines. The VTEL codecs operating with the AppsView(TM) software
will NOT support the IP protocol and, therefore, cannot be used in the
NCVIP environment. Because the VTEL codecs have now reached the end
of their life expectancy, all sites with VTEL units should have in place
a plan for the purchase of a new codec.
At eligible institutions, an E-Rate discount may apply to your
purchase. Contact your local E-Rate coordinator for additional information
on this subject.
Your Regional Coordinator can assist you in the migration
from the NCIH network to the NCVIP network and guide you through the
submission of the necessary Office of Information Technology forms. Since
the NCVIP uses an IP based videoconferencing protocol, your site may
be able to use existing network bandwidth. You will need to involve your
Information Telecommunications Administrator in making certain decisions
about the migration. Click on the Video Over IP Guidelines for a
better understanding of the network and LAN needs of videoconferencing
over IP Protocol.
Now is the time to begin planning your site’s migration to the
NCVIP network. The first step in your migration is to contact
the ITS Service Desk at 1-800-441-5296. A service request ticket will be opened
in your behalf and the process can begin.
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Benefits
- All
sites will operate under the same standard of Video Over IP (H.323).
- Conferences
appearing in split screen (CP) configurations may be scheduled from a selection
of 16 different views.
- Conferences
scheduled in split screen configurations may be controlled and manipulated
by each individual site during a conference.
- Sites
will have greater access to statewide, national, and international audiences/programs.
- Sites
will be in alignment with the industry standard movement from NCIH (H.320)
to Video Over IP (H.323).
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Network
Recommendations
- Consider
the best solution to provide students and teachers a high quality video learning
environment.
- Opting
for the least expensive solution may not always be the best solution.
- The end
users must be considered first when building your network.
- Latency,
jitter, packet loss and delay on network connections add up and can degrade
the end to end video session reducing the quality and usability of your session.
- Videoconferencing
applications require a network with few errors and optimum conditions in
order to transmit high quality video.
- Data transmission
through your network will also operate more efficiently if your network is
optimized.
- Typically,
smaller localized telephone and broadband companies lease internet services
from larger companies that have a nationwide internet backbone.
- Larger
companies may have their own internet backbone and would not have to lease
connectivity from another company.
- Currently
some Telcos and broadband providers offer a basic service or an enhanced
or managed service between your site and other local sites or to the internet.
- It is
important to be aware of the level of service your provider can guarantee
when purchasing site connectivity.
- When ordering
your site's connectivity you should always analyze your total bandwidth requirements
and ensure that you order adequate bandwidth for future growth.
- You should
always add a buffer of at least 20 percent above your peak estimated simultaneous
bandwidth usage of both video and data at your site.
- It is
important to find out if the company that provides your circuit connectivity
can also supply the internet gateway connection.
- What level
of service can they provide to your site.
- Private
ISPs have shown as many as 25 to 30 hops between the source and destination.
- Minimize
the number of hops between your site and the site you are calling.
Important Network Recommendations Oct
17th, 2007
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