| From: | Neil Bothwick |
| Date: | 2 May 2001 at 11:33:50 |
| Subject: | Re: Networking options : was Re: Issue 20 Not delivery related:) |
Will said,
>> It's shared among 50 people on the home service and cheaper business
>> service, but when are all 50 people going to be using it at the same
>> time? with cable the bandwidth is shared among all the people on the
>> same loop, so as more people in your street get it, the service slows
>> down.
> Sounds to me like the contention ratio is similar for both cable and ADSL.
It's similar numbers but different management. If everyone in your
street is using the cable link and one person is in the next street. You'll
have severely limited bandwidth while the guy in the next street get the
full whack. with ADSL everyone would get about 50% because the
contention is handled at the gateway racks, rather than the box at the
end of the road.
> Both fairly high anyway.
Bear in mind that the speed of ADSL means you will generally use the
bandwidth in short spurts, as will everyone else, so fifty people online
is a long way from fifty people using bandwidth.... unless you can read
web pages at 500Kb/s :)
>> For most of their life, RedHotAnt were allowing dual channel connections
>> to their 0808 number, it only stopped when they changed telco and
>> numbers.
> Is there any company left who allows 0800 128K connections?
Not that I know of.
> While I'm here, is there any reason why sometimes ISDN is referred to as
> 56k/112K.. rather than the full 64k/128k?
I /think/ some American setups use a lower speed for ISDN.
Cheers
Neil
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