SemiOT: Network HW items

From: Jim Davis <jpdavis_at_gorge.net>
Date: Sat May 31 06:34:00 2003

Jim Davis wrote:

> John Rollins wrote:
>
>>> Get another one and you can hook-up your own local T-1 ;)
>>
>>
>>
>> ??
>>
>> OK, I don't know much about higher speed setups. I know ISDN is kinda
>> outdated and slow now, but what is currently available at what
>> speeds/costs and how are they setup? Rather OT I suppose.
>> But more towards the quote above, what really would be needed to
>> setup a T1? And how fast IS a T1(something I probably used to know
>> but forgot a while ago since I don't run across them often)? The
>> older TSU/CSU/DSU/Whatever-SU's(not only is my memory bad, but I
>> can't seem to think straight right now!) seem to show up a lot at
>> surplus stores or in junk piles. Any reasons to grab or avoid them?
>>
> Hi
> A T1 is a old telecom digital datastream consisting of 24 ds0 s
> A ds0 is a 8 Kbyte serial data stream, ( one simplex audio stream )
> so, a T1 is 24 * 8Kbytes/sec = 196.5Kbytes/sec, about 1.5kbits/sec
> ADSL or cable are much cheaper and faster, T1 is externally clocked
> and will not be blocked, if you are sending continuous data, and the
> application requires a unbroken datastream, T1 is the economy way
> to go. For any packet traffic it's a waste since your paying for every
> bit.
> Jim Davis.
>
oops, i ment about 1.5 Megabits/sec
Received on Sat May 31 2003 - 06:34:00 BST