Poly VVX Series IP Deskphones integrate with leading platforms to help you achieve VoIP cost savings while delivering the industry’s best sound quality and features people love. Help them all feel heard, and keep them all happy, with ultra-. reliable, ultra-high-quality phones from Poly. Poly HD voice delivers superior, high-definition sound through advanced voice-processing capabilities. Poly acoustic fence keeps conversations free from outside noises, echoes and distractions. Bring it all together and everyone will hear that the call quality is downright amazing.