Security - SBCs safeguard against toll fraud and service theft and provide media and signaling encryption to ensure confidentiality and protect against impersonation
Multivendor interoperability - SBCs normalize SIP (Session Initiation Protocol) signaling stream headers and messages to mitigate multivendor incompatibilities
Protocol interworking - SBCs enable interworking between diverse protocols
Quality of service (QoS) - SBCs enforce call admission control (CAC) policies for service quality assurance
Session routing - SBCs route sessions across network interfaces to ensure high availability