your comments regarding following

[Kumara]

Thank your for your generous reply and it made me educated some in the way I
am. my upload is the 128kbps as per the ISP. please wish me in my way. I'm
going to install FC3 sever, make a DNS for my LAN and share the internet
connection 20 people through a proxy. but I'm not much clear what i should
do exactly and hope assistance of the list when I find a problem. pls advice
me when you have spare time.
Thank you very much.
Mohan

----- Original Message -----
From: "Nifty Hat Mitch" <mitch48 at sbcglobal.net>
To: "For users of Fedora Core releases" <fedora-list at redhat.com>
Sent: Thursday, January 27, 2005 7:38 PM
Subject: Re: your comments regarding following


> On Tue, Jan 25, 2005 at 04:02:28PM +0530, Rahul Sundaram wrote:
> > >
> > > I have a DSL line with 128kpbs, how many people could be shared on
this
> > > connection practically?
>
> > > If I use VoIP phone over this line with the entire share, what
> > > could be the voice quality?
>
> > poor :-)
>
> First DSL is commonly asymmetric (ADSL).  It is important to give both
> the upload and download speed.  Be very specific about which service
> you purchased.  128kpbs sounds like half the information to me.
>
> A rule of thumb...  56Kbaud is the upper limit for a dial up line for
> a reason.  i.e. This is the bandwidth for uncompressed standard audio
> through the phone system.  Half of that bandwidth can still be
> understood.
>
> Thus a 128kpbs link uses two normal audio channels in the phone system.
>
> VoIP applications can encode and compress audio so you get better
> channel use but that requires that both ends use the same encoding and
> decoding tricks.
>
> If the link is shared 11 ways then no one will get a constant full
> audio channel of bandwidth when all 11 are active.  If the use is
> intermittent enough it might work statistically.
>
> Try it....  It is possible to use serial line IP between two
> test boxes and model what 128kpbs or 56Kbps is like
>
>
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