Cisco offers a variety of connectivity, expansion and upgrade options to accommodate the customer specific needs. Cisco's components are easily and inexpensively upgradeable as customer requirements change.Cisco SC3640 system controller provides local data collection and monitoring of critical parameters and facilitates configuration of multiple access servers. As points of presence (POPs) grow in size and increase in number, the SC3640 system controller alleviates the management system design burden from the network administrator.