The difference between the CAS and CCS signaling modes is that for signaling:

A.
CAS uses the same channel as for data, while CCS uses a separate channel.

B.
CCS uses interpretive mode, while CAS uses transparent mode.

C.
CAS uses a separate channel, while CCS uses the same channel as data.

D.
CAS uses master/slave dissemination, while CCS uses a single master reference.