Re: What minimum rates should I use?

Rolf Hemmerling (hemmerling@geocities.com)
Thu, 17 Jul 1997 20:39:41 +0200


Bill Williams wrote:
> >I usually use 10/20 and 10/24 for my min/max transmit and receive rate=
s,
> >respectivly. Having your rates set too high will cause timeouts. Kee=
p in
> >mind that you can't send more than 28k on a 28.8 modem. The default r=
ates
> >for the cornell version ar 10/60 and 10/60, so if you haven't adjusted=
them
> >accordingly, you can expect to have problems.
Some refs require MinSending, MinReceiving to be set to 5 or even to 1
(why not ??). Note that *both* variables have to be set to such a value
for such refs, not just one of them ! Most ref require to set the
MaxSending to 28 or so (If you have just a 28.8 or 33.3 K modem,
this is not a real drawback. Other refs demand non-paying users to
set MaxSending to 15 (which means: no voice talks !)=20

Bill, why do high rates cause timeouts ? Does the CPU speed has
any influence on that (P200 =3D fast, 486DX133 =3D slow)
I can=B4t figure out !

At least for slow computers (486-DX-133 AMD), the b/w Quickcam is
"faster" than the Color Quickcam which requires processor power
for decompressing the compressed video data which comes from the
cam. At least this was sayed on the Hannover Fair by the
Quickcam people (They did not sell a single cam on that fair,
they were not allowed and they were not willing to...I bought
my cam next day in a computer store,anyhow)

Sincerely
Rolf
--=20
/ / / Alone on the data highway...
/ / like on an allee in Hannover-Herrenhausen
/ / / Rolf Hemmerling, Germany
/ / http://home.pages.de/~rolf.hemmerling/