Click (press) the trackwheel to view the menu on most screens and to select items on the screen. Press the Escape button to exit a screen, cancel an action, or go back one page in the browser. Hold the Escape button to end a phone call. Tips Phone Open the phone screen End a call from the Active Call screen Mute a call from the Active Call screen Change the volume during a call Dial a letter in a phone number Call voicemail Assign speed dial to a letter Type a phone number extension Mute a call using a headset End a call using a headset Press the Phone button Hold the Escape button Press the Phone button Roll the trackwheel Press Hold Hold the letter > Type a phone number...