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Session Border Controllers

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

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Session Border Controllers

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  1. Session Border Controllers Gonzalo.Camarillo@ericsson.com

  2. 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

  3. 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

  4. 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

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