Thanks for reaching out about your SIP Trunking setup! You can find step-by-step troubleshooting help here: 👉 [Vapi SIP Trunking Guide](https://docs.vapi.ai/advanced/sip/sip-trunk) If that doesn’t resolve it, please reply with: - Your Call ID - The exact error message or behavior (e.g. 401 Unauthorized, timeout, etc.) - Whether it’s happening on inbound, outbound, or both trunks - Any recent configuration changes Once we have that info, we can help pinpoint the issue faster.

Thank you for reaching out! To help diagnose the issue with your 3CX SIP connection, could you please share the exact error message or prompt you see when it asks you to contact Vapi Support? This will help us provide more targeted assistance. Sources: - [Vapi SIP Trunk Documentation](https://docs.vapi.ai/advanced/sip/sip-trunk) - [Vapi Issue Reporting Guide](https://docs.vapi.ai/issue-reporting)

It's an incoming call from our 3CX server to your BYO SIP Trunk Number. No message error anywhere : just a vocal message : Please contact VAPI support. 🙁

Hi, apologies for the delayed response. I just wanted to check if you are still experiencing this issue, as the logs show that this number received calls three days ago.