A portable telephone apparatus 100 according to the present invention comprises a call waiting section and a telephone number acquisition section that can acquire telephone numbers of telephone apparatuses on the other end of lines. A telephone directory information registration section 109 registers telephone numbers associated with information on names. A caller confirmation section searches a telephone number of the telephone directory information registration section 109 based on the telephone number acquired by the telephone number acquisition section and confirms the caller. A character string speech conversion section converts the character information on the name of the confirmed caller to speech information. A caller information notification section notifies the user of the speech information from the character string speech conversion section when an incoming call arrives during a call with speech at a volume level which does not disturb the call. <IMAGE>
