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SBC as a back-to-back user agent

Diagram

SBC as a back-to-back user agent A pure proxy keeps the Call-ID.A B2BUA usually starts a second dialog.The border can rewrite Contact and the media address.RFC 5853 describes SBC requirements. RFC 7092 classifies B2BUAs. Study drawing · not a vendor poster · cyphermonkeylabs.com

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