Session Border Controllers
From VoIP.ms Wiki
A session border controller (SBC) is a network element deployed to protect SIP-based voice over Internet Protocol (VoIP) networks. Early deployments of SBCs were focused on the borders between two service provider networks in a peering environment. This role has now expanded to include significant deployments between a service provider's access network and a backbone network to provide service to residential and/or enterprise customers.
Product: AudioCodes SBC
Overview: AudioCodes’ Mediant session border controllers (SBCs) deliver seamless connectivity, enhanced security and quality assurance for enterprise and service provider VoIP networks. In the enterprise environment, SBCs form an effective demarcation point between the business’s VoIP network and the service provider’s SIP trunk, performing SIP protocol mediation and media handling (interoperability), and securing the enterprise VoIP network. In the service provider core, AudioCodes SBCs can function as peering SBCs between operator networks or as access SBCs delivering security and protocol normalization. The Mediant family of SBCs includes a range of platforms that offer cost-effective SBC and hybrid functionality (SIP to TDM, SIP to SIP).