> From: "Kent Tambling" <Kent@acceleration.net>
> To: <cisco-nsp@puck.nether.net>
> Date: Mon, 14 Feb 2000 20:43:55 -0500
> Subject: [nsp] Best ATM termination options for DSL on 7200
>
> PA-A3 for T3 termination from BellSouth for the purpose of ADSL PVC's?
>
> What hardware combo do you folks suggest for terminating BellSouth's
> Industrial DSL? Any smart options required? What if we just want a
> single T1 ATM delivered? (bridge multiples maybe) Whats the best =
> option?
I don't know the characteristics of the "Industrial DSL", but in
general a PA-A3 is a workable solution for getting started when
you don't want to get a dedicated DSL router.
Typically DSL requries no fancy ATM options, in fact it often doesn't
use some that would be useful like LMI for finding PVC's or verifying
PVC up/down state. From what I've seen you can also use a PA-A1 or
or the PA-CES card if you have then lyaing around or even a HSSI and
ADSU, although each of these options will provide a more restrictions
on the number of PVC's that you can support.
You should however, check with the provider for compabiltiy issues
so you don't get tripped up on which version of UNI is *really*
required or PVC number schemes.
Other options at the T3 level are the 7100 series routers, the 6400
ATM-switch/routers and of course our old buddies Redback & co, though
it's when you get into the consumer/residential DSL that you really
need the features that these support.
We have serveral PA-A3's deployed for DSL - it's worked out reasonably
well - DSL rollout can be really slow, especially if your providers
are get getting into the CO's and it can take a long time before you
hit the limitations...
George
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