Hi, "The Cisco® Unified Border Element (SP Edition) is a high-scale, carrier-grade session border controller (SBC), which is integrated into Cisco routing platforms and can use a huge number of router functions to provide a very feature-rich and intelligent SBC application. Formerly known only as Session Border Controller, Cisco Unified Border Element (SP Edition) provides a network-to-network demarcation interface for signaling interworking, media interworking, address and port translations, billing, security, quality of service, call admission control, and bandwidth management." http://www.cisco.com/en/US/prod/collateral/routers/ps9343/data_sheet_c78-491... -- /doka