Cell Relay Archive

[Paul Koning <pkoning@xedia.com>]

antonio.anunciada@cas.prt.alcatel.pt wrote:
> 
> Is it posssible to have  ATM  on Sonet/SDH networks?
> How is it done?

Yes, that's probably the most common case.  The details are in the
ITU and/or ATM Forum specs.  In summary, it just involves taking the
cells and putting them back to back in the Sonet payload.  Cell
delineation is done by looking for valid header checksums in the
cell headers (if you start at the wrong offset you're likely to
get a bad one, so if you get a good one several times in a row, 
you assume you have cell framing).

	paul
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