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.The Cisco SC2200 Signaling Controller, part of the Cisco family of packet telephony solutions, enables service providers to rapidly develop and deploy new services to differentiate themselves from their competition and create new revenue streams. Already a widely used method of providing centralized functions for adding Common Channel Signaling System 7 (SS7/C7) interfaces to large remote access points of presence (POPs). Its latest release provides carrier-grade reliability through a redundant architecture and improves call processing and usability.