Phone companies make use of what type of multiplexing in order to allow for phone services and DSL services over the same line?
A)WDM
B)FDM
C)DWDM
D)CWDM

Question

Quizplus · Accepted Answer

Phone companies use Frequency Division Multiplexing (FDM) to allow for phone services and DSL services over the same line. FDM divides the available frequency spectrum of a communication channel into multiple non-overlapping frequency sub-bands, with each sub-band assigned to a different signal. This allows multiple signals to be transmitted simultaneously over the same physical medium without interfering with each other.

Phone Companies Make Use of What Type of Multiplexing in Order