I can only provide the same advice as with the 3 other posters before.
The latest software since this post was started is currently UCS 4.0.4 and if the issue still exists there for the VVX500 then I can only advise you to please raise a ticket via your Polycom reseller with Polycom support.
So far non of the other people who posted provided any feedback in regards of a raised ticket.
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Polycom Global Services
If official support is required please check how to phone or open a case here
---------------- The title Poly Employee & Community Manager is a community setting and does not reflect my role. I am just a simple volunteer in the community like everybody else. All posts and words are my own & do not represent the views of Employer.
Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge. If you need immediate and/or official assistance please open a service ticket through your proper support channels. Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's