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Troubleshooting without a legal conclusion

Sort the symptom into SIP, identity, emergency location, or messaging. Then open that document. Educational only. Not legal advice.

Learn in 5 minutes

  1. Pick the document that matches the symptom
  2. Keep a live 911 test out of this lab
  3. Write a next step that cites a page

Visual

Four checks, one call trace · study drawing · cyphermonkeylabs.com YouTrace SIP? media? which law? stop

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The fix column is a study direction. It is not a ruling.

Worked example

Pick the next document One symptom. One next document. No legal conclusion.

  1. Read the symptom.
  2. Ignore the unrelated protocols.
  3. Name the document.

Fault

The caller hears silence. Identity is present. The ticket says to rotate the STIR certificate.

RTP follows the address in SDP. STIR is a signature on the request.

Quiz

No audio on a browser call is first


A required 9 before 911 is first


A missing Identity header is first


Blocked A2P SMS is first


This lesson allows a live 911 call


A careful note includes


Ecosystem

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

CRM Screen pop uses data the contact center already has: ANI, DNIS, case id. Those values may arrive in SIP headers or in a CTI event after the call is up. The CRM is not a SIP element.

Glossary · Ecosystem map · Ports · Troubleshooting

Sources and go deeper