A communication apparatus includes at least two communication units that are mutually communicable; an incoming call detection device that is configured to detect presence or absence of an incoming call signal; a notification device that is configured to provide a user, when an incoming call signal is detected by the incoming call detection device, with a notification indicating the detection of the incoming call signal; and a first transfer device that is configured to transfer, when a voice communication is started by a first communication unit out of the at least two communication units after the notification by the notification device is provided, a first connection information indicating a connection condition, when the voice communication is started, of a data communication which has been performed by the first communication unit to a second communication unit other than the first communication unit out of the at least two communication units.