This read-create string identifies the name, optionally including path, of an Announcement file that has been stored as a permanent entry in the Announcement table. An admin uses this mandatory parameter when creating a new announcement table entry, specifying exactly which pre-recorded file the gateway should treat as a permanent, always-available announcement. For example, when provisioning a new permanent greeting message, the admin would set this object to the exact filename, and subdirectory if any, of the recorded audio file on the Announcement file server.