Free Conference lines with Cricket Wireless

[railshot]

I am considering switching from T-mobile due to it's bad reception in buildings. I have to use a conferencing service such as FreeConferenceCall.com couple of times per month. I know that these services basically rip off phone companies, but it's not my choice to make. T-mobile charges me 1c/minute to use these which is fine, but I saw it elsewhere from a few years back that Crickets prohibits the use of conference lines, and that using them will get your service terminated. I looked at their Acceptable Use policy online and I am not finding any limitations there in regards to conference lines.
Can anyone shed light on whether Cricket allows the use of free conference lines?

Edit: Follow up: I spoke with Cricket. They still do not allow free conference services, however I could not get a solid answer about professional ones like GoToMeeting. Anyone uses GoToMeeting or Join.me or similar with Cricket?

 

[RumoredNow]

Why not go with Skype or a similar interwebs based service?

 

[QCFemme]

Not able to use any of them. Your service will be TERMINATED without warning. Cricket sucks that way.