SONET Interconnect (was RE: MCI)

Currently, the only way of doing this is the "traditional way" of using
SONET add-drop muxes to get you up to higher rates. You mux the STS-3c into
an STS-12 and then mux the 12's into a STS-48. This is what we are doing
in ATDNet which is a ATM OC-48 bidirectional line-switched ring for ARPA

and DoD.


As per our previous discussion, the trend seems to be putting the switching
and transport functions in one box so that you may be able to buy an
ATM switch that also does SONET protection switching.

I fail understand, however, why ATM over SONET is desirable when there is
such a loss to overhead, especially when viable alternatives may exist to
get more bang-for-the-buck.

Perhaps someone could enlighten me on this particular datapoint?

- paul