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OPTIONS health and SRTP media

OPTIONS followed by 200 marks the SBC healthy. Media processors use SRTP. The protocol article’s OPTIONS CSeq cell disagrees with RFC 3261.

Learn in 5 minutes

  1. Mark health with OPTIONS and 200
  2. Keep CSeq method equal to OPTIONS
  3. Treat media-processor audio as SRTP

Visual

Healthy OPTIONS, then a call · study drawing · cyphermonkeylabs.com SBCTeams proxy OPTIONS 200 INVITE 100

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Confirm CSeq with a capture. The table cell checked on 2026-10-14 is not the RFC.

Worked example

Dissect a legal OPTIONS This is the request to send. What is the CSeq method?

    Vendor menus, ports, and license names change. Confirm before relying on a sentence that is not an RFC.

    Fault

    A keepalive was built by copying the protocol article’s OPTIONS example table. The peer does not treat the SBC as healthy.

    The request line is OPTIONS and the CSeq method is INVITE.

    Quiz

    The SBC is marked healthy when


    The CSeq method on OPTIONS must be


    The OPTIONS example table cell checked on 2026-10-14


    Media processors use


    A capture is the check for CSeq because


    100 Trying on the INVITE


    Ecosystem

    Glossary, sister systems, and the integration seam for this room.

    Quality management and recording QM scores interactions. The standardized way an SBC forks a session to a recorder is SIPREC.

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