This figure illustrates the main network and SVC components that the SVC Social Voicemail service interacts with. Social Voicemail interacts with the Service Broker Subscriber Database using these items: Msqid | caller_number | caller_name | isPublic | file_location items. Social Voicemail interacts with an external media server over the SIP protocol. An NFS server is required to store the message WAV files. The NFS server connects to Social Voicemail and the media server using NFS. The NFS server stores files in the /greetings, /inbox, /outbox, and /name directories. Finally Social Voicemail interacts with a Subscriber Self-Service Web Application through the SVC Restful API. The Web Application also interacts with the NFS (message file) server using NFS.