Also, AAL5 calculates a 32-bit cyclic redundancy check (CRC) over the entire AAL5 protocol data unit to detect cell loss and the incorrect ordering or incorrect insertion of cells.

• 此外，AAL5为整个AAL5协议数据单元计算出一个32位的循环冗余校验码来检测信元丢失和错误的信元顺序或被错误插入的信元。