We just went through an expensive upgrade in our boardroom. There was an analog polycom being used. Replacing it, was what got the project started. We ended up with a Clearone Converge along with a Control4 unit which allows everything to be controlled via a tablet. Clearone promised that everything would work with our Mitel. The phone does work, however, the Clearone cannot send a flash to the Mitel. Now we can't use the conference option. The unit can be setup to connect via analog. However, no we won't be getting all the advantages our VOIP system. There has to be a way to make conference calls while being setup as a SIP phone instead of analog.