I configured Vapi with my own sip trunk (asterisk based). When I create an outbound call with vapi.. I get a call_id in return. I'd like to match that call in asterisk, but I cannot find a way to do it. VAPI seems to send a Call-Sid header but it's a different value than the call_id I get when creating the object.

Thanks for your details! To help you further, could you share which SIP headers or unique identifiers you see in your Asterisk logs for outbound calls initiated by Vapi (for example, Call-Sid, From, or custom headers)? This will help determine if there’s a consistent field you can use to match with Vapi’s call_id. Source: - [Vapi documentation: Debug call forwarding drops](https://docs.vapi.ai/phone-calling/transfer-calls/debug-forwarding-drops)

Hi cyruzzo, It looks like you're interested in managing and troubleshooting calls using Vapi. Here are some pointers for handling and diagnosing call issues: 1. Handling Call In Progress Errors: - If you encounter call errors such as

call.in-progress.error-sip-inbound-call-failed-to-connect

or similar, update your error handling to utilize these specific error codes for precise diagnostics. - For a detailed overview of handling SIP call failures, refer to updates on [SIP Call Error Handling](https://docs.vapi.ai/changelog/2025/5/31). 2. Call Forwarding Issues: - Ensure that Vapi successfully initiates call forwarding by verifying the forwarding request and reviewing the API responses. - Check your assistant’s

serverMessages

configuration. Removing

"phone-call-control"

or setting

phoneCallProviderBypassEnabled

to

false

can help resolve misconfigurations. - For debugging specific issues with call forwarding or drop-offs, follow this detailed guide on [Debug Call Forwarding Drops](https://docs.vapi.ai/phone-calling/in-call-control/transfer-calls/debug-forwarding-drops). 3. Ended Reason for SIP Inbound Calls: - Use new

endedReason

values like

call.ringing.sip-inbound-caller-hungup-before-call-connect

for accurate handling of SIP inbound call failures. - More information can be found under the update on [New Ended Reasons for SIP Inbound Calls](https://docs.vapi.ai/changelog/2025/6/7). If you need more specific help, feel free to provide additional details about your issue.