It has something to do with DSL getting standards. They are not using cap(?)
anymore but are using DMT. Thats why a 675 wont work, a newer 678 will tho. The
only reason a 675 will work is if the line has been grand-fathered in, if you
upgrade your line or get a new one, you will have to use a 678 w/dmt.
e-bay has 678's for around $70.
Hope this helps.
Dan

All,
I just got my (Cisco 678) DSL hooked up again (upon moving).

I don't know the specifics, but there seemed to be some issue about
Cisco 675 routers being incompatible (sp?) with the upgraded DSL that I
now receive from Qworst.

They sent me another router even though I did not request it.  It was the
675 and for some reasons, it would not have worked with my set-up anyway.

Anyone know more about why 640K might not work with a 675?
uak