Re: Hello and two questions

Alex Watson (
Mon, 29 Apr 1996 14:01:10 -0500 (CDT)

ISDN for CUSEEME is still not good enough for live videoconferencing, at
least not where hand signals must be smooth. Audio on the other hand,
seems to be the only smooth factor with ISDN at 128k using CUSEEME, video
is still jerky. This depends greatly on the bottlenecks of the
internet! Once I get past Sprint's HUB for kansas City, my packet loss
goes way up! Only at 4am will I get good enough throughput.

Wait for cable TV to provide internet service. I had big hopes for ISDN,
but am disappointed. Most of the time, my throughput is not much
better than having a 28.8k modem.


On Mon, 29 Apr 1996, ref wrote:

> This is my first posting to this list. I am a statewide Director of
> Programs for the Deaf in a state education agency, and the CU-Seeme
> technology holds immense promise for this population, because deaf
> persons communicate through a visual medium (i.e. sign language),
> and because internet connectivity is spreading very rapidly across
> our school systems at the student, instructional and administrative
> levels.
> In this context, the potential ramifications of CU-SeeMe technology
> for the deaf are clearly apparent.
> One of my responsibilites is to serve as a technology resource person
> for our division, and to facilitate statewide initiatives using
> communications technology. We are currently doing this via Web pages
> and email mailing lists, and it is my desire to stay absolutely
> up to date on the CU-SeeMe technology. That being said, I would like
> to present a couple of questions to the list:
> 1. I keep hearing contradicting opinions about what kind of
> connection is required to implement CU-SeeMe effectively. Some say
> a regular 28.8b connection works fine. Others say that won't work,
> you really need ISDN. Still others say ISDN is marginal, that you
> need video cable connection. Others say it all depends on how many
> windows (i.e., users) are running in your CU-SeeMe session.
> Since school systems across the country (including mine!) are on
> extremely tight budgets, connectivity costs are extremely relevant.
> That's why I'm asking this question. There is a *lot* of difference,
> costwise, between a 28.8 and an ISDN connection, especially when
> you multiply it times a couple hundred school districts, many of
> which already have 28.8 connections up and running. And I won't
> even get into the costs of statewide video cable!
> This is a critically important issue in this case, because it is
> important for the hand movements of deaf sign language to be
> acceptably smooth and recognizable, within cost restraints, if
> that's possible at all.
> I would sincerely appreciate any and all definitive information
> or other feedback on this topic. Many thanks!
> Ron Morgan