1. A mobile subscriber terminal, comprising: one or more processing devices; a screen; a contacts directory software application configured to be executed by the one or more processing devices, the screen being configured to display a contacts directory entry of the contacts directory software application; and a social network application configured to be executed by the one or more processing devices, the social network application being integrated with the contacts directory software application, the social network application being configured to retrieve data derived from a social network page associated with the contacts directory entry, of a social network, wherein the retrieved data derived from the social network page of a party associated with the contacts directory entry is displayed on the screen, and the social network application integrated with the contacts directory software application is configured to upload media files, associated with the contacts directory entry, to the social network to a communication space between a user of the mobile subscriber terminal and a social network account associated with the contacts directory entry during the call, the media files being one or more of voice, image, and video files.