A special PCM system uses 16 channels of data, one whose purpose is identification (ID) and synchronization. Find (a) the number of available data channels.

A special PCM system uses 16 channels of data, one whose purpose is id

1.	A special PCM system uses 16 channels of data, one whose purpose is identification (ID) and synchronization. Find (a) the number of available data channels.
A.	15
B.	16
C.	14
D.	18
Answer» B. 16