Re: Speed required for CUSeeMe

Joseph Kahan (jkahan@alpha.serve.net)
Thu, 1 Aug 1996 12:09:21 -0500


At 8:09 AM 8/1/96, Dennis J. Streveler wrote:
>Hola Francisco,
>
>It is nearly impossible to use CU at 14.4. I have never heard of a case
>where anybody gets more than an occasional partial still frame at 14.4. It
>is just not enough bandwidth. Like trying to move the ocean through a
>drinking straw, I'd say. Rather impossible. Get yourself a 28.8 modem and
>make sure your ISP will allow you to connect at that speed. Otherwise I'd
>stick to audio applications (Internet Phone, Intel Internet Phone, etc.)
>which work quite handily at 14.4.
>
>
>Regards,
>Dennis

Dennis,

I don't want to sound like I don't agree, but I have tested 14.4 K modem
connections with up to 8 fps, bi-directional, directly from Moscow to Houston.
The fact is... a 14.4 K modem is more stable than a 28.8 K because of
compression.

Going back to the question:
There are several issues related to throughput to/from the user and looking
at one bottle neck (modem) doesn't clear up the rest of the mess.

Here are a few of areas that could cause a slow transmissions:

Your Server - Reflector
The Servers Network - T1 or less
Audio with Video
Number of Video windows selected
Your overall system

Not to mention -
The network path
Router filtering

Most of the time and I can't say, all the time, the problem is the server
/ reflector environment. Systems are being installed without reviewing
network requirements.

If you really want to see what your system is doing, try connecting directly
one on one to another person.

Best of luck,

Joe

___________________________________

Joseph Kahan
Video-Conferencing Specialist

ICU Video
"Your Integrated Conferencing Utility Solution"

TEL: (713) 282-0557
Pager: (713) 736-5322
E-mail: jkahan@serve.net
http://www.westcam.com/icuvideo

___________________________________