For MiVoice Business there are the SMDR logs you can view
Under maintenance commands you can run the "LOGSYS READ smdr" there is a list of options
I use "LOGSYS READ smdr ALL MATCH <string>" most often
you can also you can also telnet into the controller using raw port 1752
there are guides around that tell you how to read the data
and there are some 3rd party solutions that will put it in a friendlier version that you can then search and report on
