Refer to the exhibit.
What does the parameter Overlay on button number 2 mean?

A.
Overlay means that this IP phone has more than one extension configured on line 2.

B.
Overlay means any calls to line 1 when busy will be automatically forwarded to line 2.

C.
Overlay means that the user can dial using any Overlay application, for example, Click to dial
application.

D.
Overlay means that the extension on line 2 is part of an Overlay group that handles calls that
have been sitting in the queue and exceed the “Lay” limit.