Disclosed is cordless telephone equipment allowing various kinds of data stored in a mobile telephone to be stored in a cordless handset in a state usable therein, without provision of a new device thereto. A handset transfer-data conversion section that executes a predetermined conversion process according to a type of handset transfer-data stored in a storage section. Specifically, the handset transfer-data conversion section converts an audio format of ringtone data according to a use CODEC of a cordless handset. In addition, the handset transfer-data conversion section converts an image size of wallpaper data into a size reproducible in the cordless handset. Further, the handset transfer-data conversion section converts an image size of image data of the other party included in telephone directory data into a size reproducible in the cordless handset.