These ShoreTel Mitel IP480 Phones have been converted ( and provisioned) to work with RingCentral. The screen buttons along with all function buttons have been specifically programmed for the RingCentral system. These can no longer work on the ShoreTel/Mitel system with this firmware upgrade that was done to them.
If you want free phones along with free setup and maintenance support with your RingCentral system, order your service through us. It costs you no more then ordering direct with RingCentral, you just get our help as well as direct help with them anytime you need it. We will even migrate your existing phone numbers for FREE...