Make more efficient and productive calls with the unparalleled voice clarity of Polycom HD Voice.Reduce deployment and maintenance costs—the Polycom Zero Touch Provisioning and web based configuration tool makes the VVX 300 series simple to deploy, easy to administer, upgrade, and maintain. Easily to integrate with third- party web-based UC and productivity applications for broad, standards based, open APIs Optional AC Adapter not included. Intended to be used via POE (Power over Ethernet).