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common part convergence sublayer
One of the two sublayers of any AAL. The CPCS is service-independent and is
further divided into the CS and the SAR sublayers. The CPCS is responsible for
preparing data for transport across the ATM network, including the creation of
the 48-byte payload cells that are passed to the ATM layer. See also
AAL, ATM layer, CS, SAR, and
SSCS.
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