During troubleshooting, you can obtain multiple requests and response messages in a session by capturing packets. Which of the following options can be used to confirm the mapping between requests and response packets?
In SIP message correlation, a response matches a request using the CSeq header (method and sequence number) together with the dialog identifiers (Call-ID, From/To with tags). Among the options, CSeq is the direct, standard field used to pair a specific request with its corresponding response within the same dialog.
[References: HCIP-Access V2.5 (SIP message structure and troubleshooting: CSeq-based mapping of requests/responses)., , ]
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