SwyxIt! uses the handset for the "Hook On/Off" function.

SwyxIt! uses the handset for voice input and output.

SwyxIt! uses the handset P280 for ringing sound output (speaker).

If the "Speaker" button on SwyxIt! Handset P280 is pressed during a call, the speaker in the phone rest will be activated for open listening.

SwyxIt! uses the volume control on the SwyxIt! Handset P280 to adjust the volume of the ringing sound while it is ringing.

SwyxIt! uses the volume control on the handset to adjust the volume during a call.