Craig and Blankmind, please do not confuse
the two (xDSL and DWDM) technologies.
WDM is the Transport Layer where it
does not care what protocol is embedded,
such as ATM, IP, Tag, xDSL or Even TDM
as long as it hands off a optical vs.
electrical interface (OC3/OC12/OC48)
Will small business' see WDM, well yes,
indirectly. If a large carrier such as
AT&T deploys ATM service to the customer
premisis, The switching fabric can remain
at the Point of Presence while distributing
the access shelves, T1 circuit Em, ATMds3
OC3 etc, right to the customer's office
or bast. thus serving multi. customers
in that building.
How to they get the access shelves back to the
switch (fabric), glad you asked, WDM! What the
carrier now has is one seamless manageable node.
How about if the customer has several sites. Again,
the switching fabric stays in the POP and the access
shelves are connected via WDM.
You don't know me from Adam, but it's happening now. |
