welcome back to the Polycom Community.
The SoundStation and SoundPoint IP phones are only officially certified to work with LYNC 2010 and LYNC 2013.
The latest Supported software was 4.1.1.0731 and they are not officially supported to work with Skype for Business.
The VVX phones that support Skype for Business should be on 188.8.131.5237
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.
Please also ensure you always check the VoIP , Video Endpoint , Microsoft Voice , PSTN or other FAQ's in the different sections