Session Border Controllers

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Presentation transcript:

Session Border Controllers Gonzalo.Camarillo@ericsson.com

Definition We do not have a definition Different SBCs perform different functions Typically acting as B2BUAs They are located at the edge of the network Access Access control, NAT traversal, … Peering

Peering Topology hiding Traffic monitoring Traffic shaping Ingress router selection Load balancing Protocol repair Protocol interworking SIP “profiles”, H.323 IPv6/IPv4 Interworking Media encryption

Technical Problems with SBCs Do not work with end-to-end confidentiality Break end-to-end integrity May make wrong assumptions Break end-to-end negotiations draft-camarillo-sipping-sbc-funcs-01.txt