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Low Latency and Computational overhead A hidden latency cost is credential validation. If the UA received caller’s SAML certificate from its domain's SIP server it trusts its server implicitly thus it can extend that trust to relying on it to validate the other party's SAML certificate. This not only eliminates the hidden validation latency, but also its computational cost to the UA. Starting point draft-ietf-sipping-certs-03 |