Dry Copper, DSLAM, Asymmetric Routing

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I have two sites that are fairly close to each other, and I am planning to
buy two point-to-point copper pairs for each site. On each site I will have
a ADSL2 DSLAM and one modem. There will be two Cisco routers on each side
and what I want to do is set the upstream traffic's static route to point to
the DSLAM on either side of the setup, therefore we should be able to have
24Mbps of symetrical bandwidth by utilizing the downstream link of the ADSL2
technology.

For example from Site A, if I upload a file to Site B the file will be
forwarded to Site A's DSLAM and Site B's modem will be downloading at
24Mbps. If I download a file from Site B, then the file will be pointed to
Site B's DSLAM and Site A will be downloading at 24Mbps.

Is such a setup possible? How much does point to point dry copper cost
nowadays if it is?

Thanks for any input.



Re: Dry Copper, DSLAM, Asymmetric Routing
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The big question is how close are they to the CO? Even buying an alarm loop
from the LEC, they'll backhaul it to the CO first, its not like some
guy in a bucket crane goes stringing cable up site to site directly
for you...

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Okay, sounds feasible assuming you get anywhere close to full speed on
your alarm loops.

One thing to remember is that DSLAMs are made for telco deployments.
Ie. they'll be 24 ports at the minimum, and possibly run only off -48V
DC power. I tried to get some pricing on the lowest end ones and
failed on some web searches, I'm guessing something like an Adtran
total Access 1200 mini-DSLAM is going to run $4500-$5000 list price new.

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Okay, sounds like it could break, but is doable. Troubleshooting a
half-down link will be tortourous.

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Depends on your LEC. Qwest long ago got wind of it and effectively
shut it down for end-users. Something like $600/month a loop, and they
don't guarantee passing even a DS0 over it, let alone DSL
signalling. If there's bridge taps on it, too bad.
Its only tested out for its intended purpose (ie. a current loop for
an alarm circuit). Repair on it is absolutely dead last in the
hiearchy of things. Ie. only if they've got guys sitting around for
hours with nothing to do, they might consider going out to take a look.

CLECs can buy dry loops conditioned to their colo in the CO on
friendlier terms..

This may all be more cost effectively done with metro-ethernet from the
LECs in your area.

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