call.in-progress.error-providerfault-transport-nev...
# supportc
Caleb
04/25/2025, 7:50 PMI've been getting this error a bunch over the last few days. Any ideas why?
v
Vapi Support Bot
04/25/2025, 7:52 PMThis error occurs when your telephony provider fails to connect the call within the 300-second timeout period. The most common cause is an issue with your SIP configuration or the telephony provider not responding in time.
Troubleshooting step:
Check your telephony provider logs to identify why calls aren't connecting, and verify your SIP configuration is correct (authentication, IP whitelisting, and proper URI formatting).
Sources:
- [Discord conversation about transport never connected error](https://discord.com/channels/1211482211119796234/1340144301132353637)
- [Discord conversation about telephony provider issues](https://discord.com/channels/1211482211119796234/1333747605628391434)
c
Caleb
04/25/2025, 8:08 PMOkay!
k
Kings_big💫
04/25/2025, 8:44 PMchecking if this is resolved/solved for you?
c
Caleb
04/25/2025, 8:46 PMIt is not
Caleb
04/25/2025, 8:46 PM@Kings_big💫
k
Kings_big💫
04/25/2025, 8:51 PMTo help track down this issue, could you share one or two:
- The call ID
- When exactly this happened (the timestamp)
- What response you expected to get
- What response you actually got instead
This would really help us figure out what went wrong!
c
Caleb
04/25/2025, 11:58 PM17bddd82-3061-4814-9778-832d43443524
Caleb
04/25/2025, 11:58 PM9e97892c-b40d-4783-9e64-151b0b5505cb
Caleb
04/25/2025, 11:58 PM441799bd-19ef-4e7c-bd38-9ece641132f3
Caleb
04/25/2025, 11:58 PMa0973c3e-f1f3-47be-9e29-d5215eb326d4
Caleb
04/26/2025, 12:06 AM@Kings_big💫
k
Kings_big💫
04/26/2025, 2:50 AMLooking into it
c
Caleb
04/26/2025, 1:43 PMTy
Caleb
04/27/2025, 1:47 AMAny update? @Kings_big💫
k
Kings_big💫
04/27/2025, 7:00 AMNo update yet, I'll ping you
Kings_big💫
04/28/2025, 9:47 AMThese calls weren't connected from Twilio's side. So you will have to use the call SIDs of Twilio and check with them why they didn't connect in the required time. And then come back to us and we'll continue further investigation. Post their responses.
For the missing call ID, you have deleted the numbers, which is why we cannot continue further investigation.
https://cdn.discordapp.com/attachments/1365414659833724968/1366350058177560586/image.png?ex=6810a027&is=680f4ea7&hm=2c46e18c375fc051626f4f921d20890f17a3bbb153b8bed03a0f9406f0f6f065&
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