Poly VVX250, 350, and 450 phone tutorial Check out the tutorial below to learn how to use your Poly VVX 250, 350, 450 phones. <span data-mce-type="bookmark" style="display: inline-block; width: 0px; overflow: hidden; line-height: 0;" class="mce_SELRES_start"></span> Related articles Provisioning Poly phones Locating the firmware of Poly VVX phones Locating the IP Address of the Poly® VVX Need additional help? Click here. Was this article helpful? Yes No