fix: correct EU SIP TCP framing and 403/404 FAQ in networking docs#1072
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dhruva-vapi wants to merge 1 commit into
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fix: correct EU SIP TCP framing and 403/404 FAQ in networking docs#1072dhruva-vapi wants to merge 1 commit into
dhruva-vapi wants to merge 1 commit into
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roshan-vapi
approved these changes
Jun 13, 2026
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Description
Problem: After #1068 merged, a reviewer pointed out two inaccuracies in the SIP networking docs. The docs implied TCP on port 5060 is EU-only, and the 403/404 FAQ referenced an
X-Reason: Invalid credentialsresponse header that Vapi does not send.This PR fixes both so the SIP networking page is accurate.
5060now shows UDP/TCP for both US and EU. Both regions accept UDP and TCP, so the previous "EU only" framing could have led US customers to think TCP was unavailable to them.X-Reason: Invalid credentialsheader. It keeps a plain explanation of what 403 and 404 mean and what to check.Follow-up to #1068, addressing post-merge review comments from @roshan-vapi.
Testing Steps
fern checkpasses (0 errors, 5 pre-existing warnings).X-Reasonheader is emitted, by checking the SIP infrastructure and backend code.