Quality of recorded audio conference calls

This is related to my post below. A little gripe about the quality of some recorded audio conference calls.

If I ever owned a big company and wanted to start comparing conference calling plans with several different conference calling companies, and I wanted to offer downloadable versions for those who missed the call... I would want to sample the quality of other calls that a certain calling company has previously recorded. They don't even have to be real calls, just demo calls with people connecting to the call from across the globe.

Like I said in my post below, I've never attended a live conference call before, I've only listened to ones that have been pre-recorded. Very often, the calls I've heard have such terrible quality that you can barely even hear the person speaking sometimes. I don't know whether that has to do with the kind of telephone a person is using or if they're using a VOIP connection or what.

But if I was paying conference calling centers to record the calls for me, I would expect them to at least try to enhance the audio quality of the downloadable version. I don't want it to sound like people are buried underground or something. If it's a service I'm paying for, even if the poor audio quality is on my end, I'd want to at least get my money's worth and have a great clarity, enhanced recorded versions of my conference calls.