Cisco Unity Express provides voicemail, integrated messaging, automated attendant, and interactive voice response for branch offices or small businesses with one or more locations. It can be installed on integrated service engine modules for the Cisco 1861 Integrated Service Router to provide cost-effective voice mail for up to 100 users. Unity Express is controlled by Cisco Unified Communications Manager Express, which adds full-featured call- processing capabilities to help deliver a simple, intuitive unified communications experience.