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From: 0003209613@mcimail.com (Sandy Kyrish)
Newsgroups: comp.dcom.telecom
Subject: Re: World Wide Teleconferencing - Current Status?
Message-ID: <11865@accuvax.nwu.edu>
Date: 5 Sep 90 21:10:00 GMT
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There are two kinds of teleconferencing; both are worldwide, and both
are relatively commonplace.

Conferences as you describe are often distributed over a one-way
analog satellite uplink, with provisions for phone call-in.  The
signal is uplinked from the conference, and picked up by as many
authorized sites as are in the footprint.  (A double hop may be
necessary to bring the broadcast to areas not covered by the
originating satellite.)

If two-way video is a must, you'll likely be using compressed video
teleconferencing.  Actually, multiple sites can also be hooked up
here, but in any case, each site must lease a digital channel (for
international, usually a T1 ckt.)

Yes, many international agreements exist, with the half-circuit
arrangements that PAT talks about.  Costs are impossible to ballpark.
Here are a few Oz mates who I bet can help you out.  I don't know any
of them personally but we are all members of the International
Teleconferencing Association.

Michelle deVries-Robbe, OTC Australia, Sydney, 612-287-5081 
Michael Valos, Telecom Australia, Melbourne, 613-606-7983 
Paul Griffiths, Sat. Networks Aus. Pty Ltd, St Ives, NSW 61-244-3975 
Theodore Tsapepas, Aussat Pty Ltd, Sydney, 612-238-7964