SBC Cheatsheet:
Enterprise Edge

Place an SBC at the edge of two networks, one interface on the private LAN, and another on the Internet. Or place one interface on the private LAN and another on the carrier WAN. Create a control point where you can apply policies to provide solutions for security, routing, resiliency, interoperability, quality of service, access control, call admission control, authentication, failover, SLA management, encryption, troubleshooting and more.