Which pins are controlled by the DTE device?

A.
CTS, RXD, DSR, RXC

B.
RTS, TXD, DTR, TXC

C.
CTS, RXD, CD, RXC

D.
RTS, TXD, DTR, XTC

Explanation:
ADPCM is a codec compression that takes a 64k voice stream and compresses it down to either an 32k, 24k, 16k stream.