The administrator of a Cisco Unity system notifies you of a problem with MWI performance. The administrator has received numerous complaints from users who report that their message lights are going on and off very slowly. This happens most often between 10:00 a.m. and
2:00 p.m.
What two things should you do to troubleshoot the problem? (Choose two.)

A.
run an All Ports Busy report for all the ports on the Unity system for the past seven days

B.
check the MWI codes in UTIM and on the telephone switch to be sure they match

C.
check the Ports page to see if the ports which perform MWIs are also answering calls

D.
ask the administrator to run two Port Usage reports for the past seven days; one for the ports that turn MWIs on and the other for all ports that answer calls