With the flat rate audio conference calling service, you can have as many conferencing calls in a month as you want, but conferencing cannot overlap. For instance; if you plan a one hour conferencing call at 10:00 and another at 11:00, then you run the risk of your 11 o'clock parties joining your 10 o'clock call before it is finished. You may want to leave a 15 minute transition gap between scheduled phone calls. If this is an issue for you, we can provide you with additional accounts so that audio conference calling does not overlap. Visit us on the web for more information on our audio conference calling services and solutions.