Voice Protocols
Ref: IETF RFC 5853 / ETSI TS 102 705
SBC
Session Border Controller
Direct Telecom Definition • Carrier Industry Standard
A dedicated telecommunications appliance or virtualized node regulating voice and video streams at network boundaries.
Technical Definition & Carrier Engineering Standards
SBCs provide NAT traversal, SIP normalization, topology hiding, RTP media transcoding, DDoS mitigation, and TLS/SRTP encryption between interconnecting carrier networks and enterprise SIP trunks.