A system and method for providing customized announcements to callers based on
the called party telephone number and the calling party telephone number. The system
comprises a server system and a messaging system. The server system detects that
a customized announcement is to be delivered and the messaging system delivers
the announcement to the caller. The customized announcements may be provided in
conjunction with voicemail systems or other services for processing calls when
a called party is not available. In a preferred embodiment the customized announcements
are provided via a service node in an advanced intelligent network.