We have convference rooms that have CX3000 and CX5500 that are signed into Lync for proper phone operation. Sometimes when users get into the converence room, they sign out of Lync on the phone and try to sign in as themselves. I want to know if I can prevent this so the CX always stays signed on as the number that is assigned to it. Thanks
In regards for the CX3000 Polycom and other manufacturers produce these optimized for Microsoft® Lync® devices after a reference design and the embedded OS running on the phones is provided, supported and maintained by our partner Microsoft®.
You therefore may want to reach out to the Microsoft® community and / or Microsoft® support directly instead as this is the most direct and efficient path.
Please try here
For the CX5500 you could look into making it a common area phone as explained in this FAQ post:
Apr 01, 2015 Question: How can I turn a Polycom VVX Business Media Phone into a Common Area Phone?
Resolution: Please check => here <=