[mythtv-users] Per-usage internet billing. WAS: Vote for Miro Integration into MythTV

[Bill Williamson]

On 1/21/08, Chris Pinkham <cpinkham at bc2va.org> wrote:
> * On Mon Jan 21, 2008 at 01:08:57PM +1100, Bill Williamson wrote:
> > 2. It costs the provider no more to do 1.5mbit ADSL vs 256kbit ADSL.
>
> Actually, it does.  I'll use simple numbers to make the math easier.  Let's
> call them 5 Mbit and 1 Mbit lines.
>
> Consider an ISP with a 100 Mbit uplink.  For simplicity sake, we'll say that
> it costs them $100 a month.  That's $1 per 1 Mbit.  In a perfect world,
> this ISP does not want to oversubscribe their service, so they decide to sell
> only 100 Mbit of service.  That's (100) 1Mbit users or (20) 5Mbit users, or
> some combination in the middle.   A 1 Mbit customer can use 1/100th of
> the total uplink and a 5 Mbit customer can use 1/20th of the uplink.  So,
> if they can sell only 20 of these 5 Mbit accounts before the pipe is full.  If
> they sell only 1 Mbit accounts, then they can sell 100.


You do know that there is not a single ISP in the world that does not
oversubscribe, and typical oversubscription contention is 20 to 1,
right?

If even 20% of users used their full bandwidth 24/7 the network would
die on ANY isp in the world