Plantronics 510S Service Guide - Page 5

Use Configuration B if: You will NOT use the Automatic Handset Lifter and... Your phone has built-in headset functionality (a Headset button). Configuration B Confirm there is a "Headset" button on your phone Headset Base (bottom view) C 1. Plug the short BLACK Phone Cable that is pre-installed on the Headset Base into the Headset port [C] on the desk phone. Handset port or Headset port? You should only use the headset port if you will not be using the Automatic Handset Lifter and you have a pre-programmed Headset button on your phone. In this configuration you must press both the Headset button on your phone and the Call Control Button on the headset to answer/end calls. Questions? For fast, efficient Technical Support call: 800-544-4660 Ext. 5538