Noid
10/01/2025, 12:25 PMVapi Support Bot
10/01/2025, 12:26 PMjson
POST https://api.vapi.ai/call/phone
{
"assistantId": "YOUR_ASSISTANT_ID",
"customer": { "number": "+11231231234" },
"phoneNumberId": "8f4f626d-cab8-4fc3-ab0a-2dd2eec19a16"
}
If the test call also fails, review any recent changes to your SIP trunk or webhook settings, as misconfigurations are a common cause of this issue.
For more details, see the [Vapi SIP trunk documentation](https://docs.vapi.ai/advanced/sip/sip-trunk#outbound-call-test).
Sources:
- [Vapi outbound call not triggering (Discord)](https://discord.com/channels/1211482211119796234/1341449578100031488)
- [Vapi SIP trunk documentation](https://docs.vapi.ai/advanced/sip/sip-trunk#outbound-call-test)Vercel
10/01/2025, 2:39 PMNoid
10/01/2025, 7:07 PMVercel
10/01/2025, 9:33 PMNoid
10/01/2025, 9:34 PMChiranjeet Mishra
10/07/2025, 1:46 PM