____ means that users can specify telephone numbers that are allowed to get through.
A) PBX graphic user interface
B) Customized menuing system
C) Fax-back
D) Call filtering

Question

Quizplus · Accepted Answer

Call filtering allows users to specify telephone numbers that are allowed to get through, blocking all other numbers. This is a common feature in phone systems, such as PBX systems, and can be used to control unwanted calls or to prioritize important calls. Fax-back and customized menuing systems are not directly related to call filtering, while a PBX graphic user interface may facilitate call filtering but is not synonymous with it.

____ Means That Users Can Specify Telephone Numbers That Are