[wplug] DSL?

[Rob Knapp]

Jonathan Billings wrote:
> Rob Knapp wrote:
>> Basically, they are high frequency filters so you don't hear the 
>> DSL's high frequency chatter on your own phone line. However, if you 
>> plug your DSL modem into it, then it won't be able to connect. (Thus 
>> the splitter.)
>
> I doubt you could hear in the range that DSL modems transmit, unless 
> you're Superman. :) (And I doubt that Lex Luthor is going to be making 
> telephone calls.)  The filters are to reduce noise produced by phones, 
> fax machines and other telephone devices so as not to garble the 
> modulated analogue signal and reduce the speed and quality of the 
> network.
>
I could have sworn I read an article back when DSL was first being 
rolled out (I was in PGH so it must have been 98 or 99) that people were 
complaining about a high pitched buzzing sound.

But that may have been unrelated to the filters.  I do know that not 
having the filter can also interfere with non-human phone usage.  My 
in-laws forgot to put a filter on their TiVO, and it was unable to 
connect until they corrected the problem.   (Granted this was a Series1 
TiVO, which is known to have an overly sensitive modem....)