Cisco SMARTnet Service for Rapid Problem Resolution Cisco SMARTnet Service is an award-winning technical support service that offers direct, anytime access to Cisco engineers and an extensive range of technical resources. SMARTnet delivers rapid issue resolution, flexible device-by-device coverage, and premium service options to help maximize operational efficiency. Cisco SMARTnet provides the following: Around-the-clock, global access to the Cisco Technical Assistance Center (TAC) Access to the extensive Cisco.com knowledgebase and tools Hardware replacement options include 2-hour, 4-hour, Next-business-day (NBD) advance replacement, as well as Return for Repair (RFR) Ongoing operating system software updates including both minor and major releases within the licensed feature set Cisco OS software support to extend the life of Cisco devices with improved security, increased performance, bandwidth management, new protocol support, and greater interoperability Proactive diagnostics and real-time alerts on select devices with Smart Call Home