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Video Conferencing basically breaks down into 3 types :
1 to 1. This is where 1 site is linked directly to another
site (either directly via ISDN or a wide area network IP link).
1 to Multiple. Where multiple sites link together. Usually
this takes the form of up to 4 participants (or sites) where the
screen at each site splits into multiple windows. Although you
can have more than 4 sites in a call (usually done via a VERY expensive
'bridge') we find that this takes place so rarely that it is usually
easier to rent time on someone else' bridge' when needed (if ever).
1 to Many. This
is where you might have either a 1 to 1 or 1 to multiple link
up and then
also 'broadcast' or stream the
conference out to PC's on the Intranet/Internet. This allows Sales
Meetings, Training Sessions or other conferences to be sent out
as necessary to involve many more participants than would otherwise
be possible. Think of this as watching David Frost interviewing
a politician. David Frost and the Politician are the conference
participants and you (& many others) are watching the broadcast.
Similarly to this situation, Internet/Intranet participants can
sometimes 'phone in' via their computer to ask questions of the
conference participant.
Compatibility
Basically most video conferencing systems will interact with each
other with no problem. There are a variety of published standards
(using names like H323 or T120 - see our resource centre for an
explanatory document) but really all you need to know is whether
you are going to conference via an ISDN line (usual method) or
a network (otherwise known as Ethernet or 'ip') link. If you are
unsure then ring our support staff and we will help with identifying
your requirements).
Makes and Models
Unless you know what you are doing then identifying the most suitable
system for your requirements can be a bit of a minefield.
Our preferred
supplier is Polycom - their range is superb, most of the product
lines are expandable
and the pricing is extremely
competetive. For example, a stand-alone 1 to 1 unit starts at under
AU$5,000 and even a 1 to multiple 4 way unit costs less than AU$20,000
(excludes monitor & sound system).
Other manufacturers
we work with, (but not limited to) are PictureTel, & VCon
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