Refer to the exhibit. Which two of the following implementation methods will resolve the issue of
overlapping extension numbers? (Choose two.)
A.
Implement a site code for each site that does not start with the digits 1 or 2.
B.
Implement an intersite prefix that does not conflict with the digits 1 or 2.
C.
Assign a unique username to each extension.
D.
Implement a private numbering plan.
E.
Implement an intersite prefix and a site code for each site. The prefix and site codes should not
overlap with the extension numbers.