2.2.12 Ms-Correlation-Id Header Field Syntax

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This protocol defines a header field called Ms-Correlation-Id. The Ms-Correlation-Id header field is used to indicate that multiple SIP dialogs are correlated. This correlation is only used for diagnostic and monitoring purposes. It does not affect the routing behavior of the SIP proxy or endpoints.

Ms-Correlation-Id = "Ms-Correlation-Id" HCOLON  UUID

HCOLON is defined in [RFC3261] section 25. UUID is defined by [RFC4122].