Slajd PPT
*** Sync. Digital Hierarchy SDH - Integration of ATM
cells Directly in to SONET frames.
*** Plesio Digital Hierarchy PDH - Encapsulates cells
in to a Physical Layer Convergence Protocol
(PLCP) which floats in the transmission frame.
*** Cells Based - Cells are sent continually. HEC is
used for cell delineation.
*** FDDI. (TAXI mode) - The FDDI 4B/5B line
coding encodes cells & handles delineation.