Telephone set for handling a call

A telephone set connected to at least one telephone line, comprising:

• a fixed unit having:
• ringing-signal detecting means for detecting a ringing signal input through the telephone line;
• telephone number detecting means for detecting telephone number data representing a telephone number of a calling party, which is input from the telephone line;
• and
• transmitting means for transmitting a radio signal representing the telephone number data detected by the telephone number detecting means and a ringing signal;
• and
• a mobile unit having:
• receiving means for receiving the radio signal transmitted from the transmitting means;
• display means for displaying the telephone number of a calling party, which is indicated by the telephone number data represented by the radio signal received by the receiving means;
• and
• ringing-sound generating means for generating a ringing sound,
• wherein the fixed unit further comprises:
• interfacing means for establishing a connection between the telephone set and a calling telephone through the telephone line;
• telephone-answering means for transmitting an outgoing message to the telephone line and for recording a voiced incoming message of the calling party, which is input from the telephone line;
• telephone number storing means for storing the input telephone number data;
• ringing-sound generating means for generating a ringing sound according to the ringing signal detected by the ringing-signal detecting means;
• and
• control means for controlling the ringing-sound generating means to prevent the generation of a ringing sound according to tho ringing signal when the telephone number data detected by the telephone number detecting means does not match the telephone number data stored in the telephone number storing means, for controlling the interfacing means to establish a connection between the telephone set and the calling telephone, to accept a call sent from the calling party, and activating the telephone-answering means when no telephone number data is detected by the telephone number detecting means and a predetermined period of time expires since the telephone set has been called, and for controlling the ringing-sound generating means of the fixed unit to cause the generation of a ringing sound when the telephone number data detected by the telephone number detecting means matches the telephone number data stored in the telephone number storing means, and wherein the mobile unit further includes control means for controlling the ringing-sound generating means of the mobile unit to prevent the generation of a ringing sound when the telephone number data is not detected, and when the telephone number data detected by the telephone number detecting means does not match the telephone number data stored in the telephone number storing means, and to generate a ringing sound in response to the ringing signal when the telephone number data detected by the telephone number detecting means of the fixed unit matches the telephone number data stored in the telephone number storing means of the fixed unit.