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Calisto P240-M: Can't Stream Music Without Hearing Dialtone



Why can't I stream music without hearing dial tone?


Lync provides a dial tone whenever the device is off the hook.  You can change this setting through the Plantronics Control Panel:
  1. If you do not have Plantronics software installed, do so here.
  2. Once you have downloaded the Plantronics software, go to Start > All Programs > Plantronics > Plantronics Control Panel.
  3. Click the Preferences tab.
  4. Clear the Microsoft OC/Lync Dial Tone Enabled check box.
  5. Click OK.