Hello Enrico,
welcome to the Polycom Community.
The Trio, if connected with a USB cable, can be a Speaker and Microphone for a PC or Mac connected to it.
If set to Skype USB Mode the Call controls should appear if connected to a PC using a Windows PC.
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Best Regards
Steffen Baier
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
