We purchased a Clearone MAX IP Conference Phone. I have it connected and working with 3cx. It also is working with internal and external calls. My issue is when I go to make a conference, the first time I do so, I can pick my conference, once i do that, I can not confirm that I want to make a new conference. Also, once I do that, if I call 700 back, It will not accept any tones after I dial 700 and connect to the conference menu. It acts like it stops sending the tones to 3cx. The Phone has the newest firmware. Anyone have any ideas?