We are running into an issue while using BToE with some of the VVX 450 phones that we have in the office. The "PC Audio" window will stay on screen, even when no audio is being played from the PC, and causes the phones to not ring on incoming calls. All phones are on UC version 126.96.36.19923, with BToE 4.30 running on the workstations. So far we have tried re-installing the BToE application, switching default audio devices to computer audio then back to the phone, and have reviewed the computers for other applications that could be opening the audio channel. The MAC address for a phone in question is 64:16:7F:3A:89:11.
as already outlined >here< you are not having the correct phone to use with Skype for Business.
Please be aware of the following when utilizing UCS 4.1.0 or later:
The use of Polycom UC Software versions 4.1.X (“Software”) requires the purchase of a separate Software license for every device that will use the Software in a LYNC / Skype for Business environment. You may not install, access, or use the Software in a LYNC / Skype for Business environment on more devices than are listed on your license until additional licenses have been purchased and authorized by Polycom. These licenses should be purchased from the same company from which you purchased the devices. You may operate devices against a LYNC / Skype for Business server for trial purposes for up to 30 days without purchasing a license. Use of the Software is subject to the terms and conditions of the End User License Agreement.
Polycom reserves the right to audit your deployment to verify that you have sufficient licenses to match the number of devices being used.
Information in regards to License Part Numbers can be found here
Unless you have proof of the additional license we are unable to help you.