Called Complementary Code Keying (CCK) the technique works only in conjunction with the DSSS technology specified in the original standard.It does not work with frequency-hopping or infrared transmissions.

• 此项技术叫做互补码键控（CCK），它只与原标准中规定的直接顺序扩频（DSSS）技术一起工作，不能用跳频或红外传输方式工作。