Home appliance and control method thereof

A control method of a home appliance, the method comprising:

• retrieving information about a communication device;
• authenticating the communication device using the information;
• registering the authenticated communication device;
• receiving identification information of a receiver that receives a call request when the user inputs the call request;
• making a call to the receiver through the communication device in response to receiving the identification information of the receiver;
• receiving a first voice data from the authenticated communication device, the first voice data being received from another communication device through the communication device;
• outputting a first voice signal corresponding to the first voice data to a user;
• receiving a second voice signal from the user;
• and
• transmitting a second voice data corresponding to the second voice signal to the communication device, the second voice data being transmitted to the another communication device through the communication device.