Cisco 880 Series Integrated Services Routers The Cisco 880 Series Integrated Services Routers combine Internet access, security, voice, & wireless services onto a single, secure device that is simple to use & manage for small businesses & enterprise small branch offices & teleworkers. The Cisco 880 Series delivers features including firewall, content filtering, VPNs at broadband speeds to small offices. Easy deployment & centralized management features help enable enterprises or service providers to deploy the Cisco 880 Series in small branch offices or small businesses.