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RE: Interface reality check

Title: RE: Interface reality check


The issue with 66-bit alignment vs 8-bit alignment arises at the receive end.
The SONET section framer provides a byte-aligned output. If the payload is
byte aligned then the payload delineation mechanism can hunt directly. If the
payload is 66-bit aligned, then the delineation mechanism must hunt on a bit
by bit basis. Bit-slipping vs byte-slipping involves more circuitry.


David W. Martin
Nortel Networks
+1 613 765-2901  
+1 613 763-2388 (fax)