T-Mobile now charging to call ring central conference lines?

Starting last week when dialing into the ring central conference call line on a tmobile phone got message that I would be charged 1cent a minute. It looks like tmobile has implemented a new policy that charges for lines it considers chat lines, conference calls, radio stations etc.. https://support.t-mobile.com/docs/DOC-33322 Does ring central have any plan to address this with tmobile as this might present complications for users of the ringcentral conference lines? Please advise