SIP Session Border Controller (SBC)

A SIP Session Border Controller (SBC) plays a vital role in securing and managing real-time voice and multimedia communication over IP networks. Positioned at the network edge, it controls SIP signaling and media streams to ensure safe, reliable, and high-quality communication. By handling call admission, protocol interworking, and traffic regulation, an SBC helps protect networks from unauthorized access, fraud, and service disruptions. It also improves call quality by managing latency, packet loss, and interoperability between different SIP environments, making it an essential component for modern VoIP and unified communication deployments.