Do you have international participants using audio conference (regular # not toll free lines)?

I have international participants who sometimes can't hear via computer microphones and need to call in using a telephone line.  Unfortunately, Adobe connect does not provide that service unless it is a toll-free number which is very costly for hours of training.  Has someone used a regular telephone line like freeconference that offers free international access numbers?  How did it work?  My concern is that because it is not integrated with Adobeconnect that those participants will not get to participate in break0ut sessions etc.  I don't understand why Adobe can't make that feature available as almost every other webinar that I have tried and I have tried a lot and use others that do provide this feature.  I believe Adobe just doesn't realize how important this feature is if they are going to compete.  This is a major deal for me. Am I the only one that has this issue?