[Tfug] DSL curiosity

[bigj at flatwan.net]

Don't think the RTs in the neighborhoods are fed by fiber. I believe they
are all DS1's if I'm not mistaken - copper in, copper out. This is also
why people fed off of RTs can only order the 1.5 meg speed. Nothing
keeping you from ordering two 1.5 meg lines and using Multi Link PPP to
your provider. Granted, the only provider in town doing MPPP is DakotaCom.
So everyone order dual 7 megs DSL lines and start downloading at 14
megs/sec!

Now fiber in the CO, definately.

--
Jon

> From: Earl
>
>> During the last major rain, our phone went out but the DSL kept
>> active for another 2-3 hours. Then it went out too. The neighbor's
>> phone and DSL both worked all of the time.
>>
>> Later the DSL came on and a couple of hours later, the phone worked
>> again. Qwest said it was a problem in a major junction box.
>
> Dial tone and network connections may be handled over two different
> routes.
>
> The dial tone may reach the DSLAM in your neighborhood via copper while
> the network is usually fiber.  They get combined on one pair to your house
> from that point.
>
> That's why they can now offer high speed DSL in so many neighborhoods.
> The distance limitation for DSL over copper is something like a maximum of
> 15,000 feet and at those distances, it may only be 256K.
>
> They probably lost something at the central office which killed your dial
> tone while the DSL problem was probably the result of the UPS batteries
> running down at the DSLAM.  I think they only spec the DSLAM power for a
> couple of hours.
>
> I've heard that in an emergency, they have a couple of generators that
> they can power the DSLAMS from if needed, but not nearly enough to cover
> all of them.
>
> George Cohn
>
>
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