Which dial plan function is used to restrict calls that are made by a lobby phone to internal extensions only?

Which dial plan function is used to restrict calls that are made by a lobby phone to internal extensions
only?

Which dial plan function is used to restrict calls that are made by a lobby phone to internal extensions
only?

A.
Path selection.

B.
Endpoint addressing.

C.
Manipulation of dialed destination.

D.
Calling privileges.



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