| Maintaining Your Phone | 672. Click Echo Cancelling Speakerphone (Yealink CP930W Speakerphone) and click Set as DefaultDevice.3. Click Microphone (Yealink CP930W Speakerphone) and click Set as Default Device.4. Confirm the action.Placing Calls via PCIf you have installed a softphone (for example, Yealink VC Desktop) on PC, you can place calls and thephone acts as a microphone and a speaker.Before you beginMake sure you have set your phone as the PC audio device.Procedure1. Make the call (or answer an incoming call) using the installed softphone on PC.The microphone is automatically activated on your phone.2. End the call on the softphone.The phone now only functions as a speaker for the PC.Holding/Resuming the PC AudioWhen you place the PC audio on hold, you cannot hear any audio on your phone.Procedure1. Select Hold to hold the call.2. Select Resume to resume the call.Muting/Unmuting the MicrophoneWhen you mute the microphone during a call, the other party cannot hear you but you can hear otherparties.Procedure1. Tap the Mute touch key.The mute touch key LED indicators glow red.2. Tap the Mute touch key again to unmute the microphone.Maintaining Your PhoneWhen your phone cannot operate properly, you need to investigate or troubleshoot issues along with othertasks that your administrator may ask you to perform.• Investigating Warnings• Resetting the Handset
