Dolby Dimension is capable of handling phone calls when connected to a source device that supports voice calling functionality.  

In order to answer an incoming call, simply tap the right Control Plate once.  To end a call, tap the right Control Plate once again.  To reject an incoming call, press and hold the right Control Plate until you hear the call rejected tone.  

Your content/media will be paused during the call and restart after ending or rejecting a call.