. . "However, as compared to other types of data checks, the CRC provides more bits for testing because either the payload or the entire packet is used to check for errors, instead of just a portion of the packet (e.g., just the header for HEC). [0118] F. Packet Loss Ratio (PLR) [0119] According to another embodiment of the invention, a packet loss ratio (PLR) is used for channel performance testing of" . .