DSL service [was Re:TLUG Mail list archives?]

[James Knott]

Jeff Liu wrote:
> Rogers is not DSL, it is cable modem link. From a book I read years
> ago, a possible disadvantage for cable modem is if there are many
> users in the same neighborhood,  the download speed can be slow since
> downstream is done by broadcasting.
>
> I am not so sure about this, it is only some knowledge I get from a book.
>

No matter how you get your internet connection, at some point it's 
shared.  While with ADSL, you have a dedicated path to the CO, the line 
into the DSLAM (Digital Subscriber Line Access Module) shelf is shared.  
For example, a couple of years ago, I was working on some DSLAMS for 
Sprint, located in the Bell CO's.  They had one 45 Mb/s DS3 shared among 
(IIRC) 192 ADSL lines.  Further, as mentioned earlier, your available 
bandwidth is distance dependent.  That is not the case with cable 
modems.  I get my knowledge from 35 years experience in IT and 
communications systems.

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