Plantronics MX500i User Guide - Page 13

Side Tone Adjustments for Windows XP: You may not find it necessary to make this adjustment. Most phones have some built-in sidetone that lets you hear your own voice as you talk. It is barely noticeable but for some users, the absence of sidetone might affect the overall sound experience. Make sure your USB adapter is connecting your headset to your computer. Start > Control Panel> Sound and Audio Devices > Click the 'volume tab' > Click the 'Advanced' button> If a 'Microphone' option is available adjust it how you see fit. If a 'Microphone' option is NOT available (likely): Choose Options > Properties > Check Microphone> Adjust accordingly. The degree to which you will notice the adjustments, depends on the level your 'speaker volume' is set, within that same panel. A higher overall speaker volume will allow a higher level of side tone. Internet Headset Online User Guides Page 13 of 13