What is a remote session border controller (SBC)?

A Remote Session Border Controller (SBC) is a network device or software application that manages and secures Voice over IP (VoIP) communications at the edge of networks, especially in remote or cloud-based environments. SBCs control signaling and media streams, providing security, interoperability, and quality of service for VoIP and unified communications. In remote roles, SBC professionals are responsible for deploying, configuring, and maintaining SBCs to ensure secure and reliable communication between different networks or service providers.