Patent ID: 8107926

Claim:
A communication device comprising: a base unit; and a handset, the base unit comprising: a first communication unit that is configured to communicate with an external device by using a communication service subject to setting authentication data into the communication service; an authentication data storing unit that stores the authentication data; and an authentication data transmitting unit that transmits the authentication data to the handset, and the handset comprising: a second communication unit that is configured to communicate with the external device by using the communication service subject to setting authentication data into the communication service; an authentication data receiving unit that receives the authentication data transmitted from the authentication data transmitting unit; and a setting unit that sets the authentication data received by the authentication data receiving unit into the communication service when the second communication unit attempts to communicate with the external device by using the communication service, wherein the base unit further comprises a third communication unit that is configured to establish a communication between the base unit and the handset; wherein the handset further comprises: a first determining unit that determines whether the third communication unit establishes the communication between the base unit and the handset; and a requesting unit that transmits, to the authentication data transmitting unit, a request for transmitting the authentication data to the authentication data receiving unit when the first determining unit determines that the third communication unit establishes the communication between the base unit and the handset; and wherein the authentication data transmitting unit transmits the authentication data to the authentication data receiving unit when the authentication data transmitting unit receives the request from the requesting unit.