[nycbug-talk] Why is DSL-Cable asynchronous?

Isaac Levy ike at lesmuug.org
Sat Nov 1 20:16:15 EDT 2008

On Nov 1, 2008, at 7:08 PM, Miles Nordin wrote:

>>>>>> "il" == Isaac Levy <ike at lesmuug.org> writes:
>    il> Why is consumer dsl or cable asynchronous?
> for cable, WCDMA/cdma2000/gprs, and maybe FiOS, it is actually more
> expensive to move bits upstream at L1.


> The problem is that you must
> share a band among the many endpoints who'd like to send upstream, and
> there's overhead to coordinating this.

THAT is what I've been looking for.  Now it's crystal clear to me.

Understanding the way the signaling is setup on the transport wire,  
and how it is different than the characteristics of say, ethernet, is  
the key to understanding this for me.

Thanks Miles, and everyone!


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