Nigel Kendrick wrote:
> I have just inherited four sites linked via BT Kilostream circuits.
>
> Theres some old Cray DCX 818 and BT multiplexers connected to the
> Kilostream NTEs and the end result is that the remote sites have async
> terminal access to a central computer system.
>
> Although everything works OK, the muxes are temperamental - they are
> maintained by BT but are often in need of attention.
>
> Not having worked with such circuits for many years, I would like to
> open up the following questions to the floor...
>
> What modern kit could replace the muxes?
>
> What are the pros and cons of replacing the Kilostream circuits with
> broadband? I would expect Kilostream to actually be more reliable but
> obviously slower.
The biggest con is that there is no SLA for ADSL, your links could go
down not for hours or days but in an extreme case it could be weeks or
months. All other problems to do with changing from Kilostream to ADSL
can be worked around except for that one point.
So you have to ask yourself how important is it for the links to be
there 24/7 & how could it work if a link goes down for X number of days.
I have also experienced problems caused by remote routers on links
locking up the connections, not to sure whether you have to same with
Kilostream or not, but it is another con...
As I said it will all depend on whether you can live with a SLA or not,
private wires. aka kilostream are always treated with high importance,
not so DSL.
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Posted: 2005-12-22 19:34:23
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