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Thu Mar 25 11:59:21 PST 2004


Remember the circuits are over-provisioned and that's a *feature* in
the provisioning world.  So out of the DSLAM comes a T1, T3, OC3 (name
your speed circuit) over which you stuff as many subscriber lines as
you can.  So, for instance, some of the more risk loving DSL providers only
guarantee around 10Kbps per subscriber (with peak rate of, say, 1.5 or
10 Mbps).  And it turns out that your typical ATM equipment is (slightly)
better at supporting vast numbers of tiny circuits (ATM equiv of tinygrams)
with large peak rates than frame relay equipment...

Craig



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