Twilio SIP INVITEs to LiveKit project p_3lrmo3qmlaz never logged in Telephony

Telephony
1

I’m connecting Twilio Programmable Voice to LiveKit Cloud via SIP, but the SIP legs never appear in Telephony → Calls.

Project ID: p_3lrmo3qmlaz
SIP URI: sip:3lrmo3qmlaz.sip.livekit.cloud
Inbound trunk ID: ST_oJ67784XR2NQ, name twilio-inbound, numbers: ["+15204236742"]
Dispatch rule: Individual, no trunk/number filters, targets my agent.

Twilio is using <Dial><Sip> with:
sip:+15204236742@3lrmo3qmlaz.sip.livekit.cloud;transport=tls
from DID +15204236742.

Example parent call SID: CA7b723fb0c5ddd60eaff2adb4ca205726 (Incoming, 35s, Completed).
Child SIP leg SIDs:

  • CA6089a6729af560cc095961aec55d2807

  • CA48bd4b987f522b3b9aefe36af66bc40c

Twilio reports these child legs as Outgoing Dial / SIP / “No Answer, 0 sec” with no Twilio-side errors. TwiML fetch is 200 OK and valid. PCAPs for the SIP legs are 24‑byte header only (no SIP dialog), which suggests your SIP edge never returns even a 100 Trying.

In LiveKit Cloud, Telephony → Calls remains completely empty during these attempts (no “No trunk found” or other SIP errors).

Can you confirm whether INVITEs to this URI are reaching this project’s SIP edge, and if so, why they aren’t being logged or matched to trunk twilio-inbound?

2

I looked at the server logs. It appears the agent is not answering the call. What do you see in your agent logs?