| 释义 |
SAR (Segmentation And Reassembly) In the ATM reference model, a sublayer of the ATM Adap- tation Layer (AAL) that functions to segment the user data into payloads for insertion into cells, prior to transmission. At the receiving end of the communication, the SAR extracts the payload from the cells and reassembles the data into the information stream as originally transmitted. See also AAL, ATM reference model, cell, and payload. |