The JRDDP packet trailer shall be a 16-bit CCITT Cyclic Redundancy Check (CRC) computed from the Destination SLA to the last byte of the Payload field.
The 16-bit CCITT CRC shall be computed according to the following polynomial:
Prior to computing each packet’s CRC, the initial value for the computation shall be set to all 1s.
"Internal Standards developed by Sandia National Laboratories". Experience Base, Sandia National Laboratories, Albuquerque, NM, 0000.