Issue: Every SIP INVITE we send to our Vapi trunk gets a quick 100 Trying → 404 Not Found response. What we’ve checked so far: • Network/TLS and OPTIONS pings are fine (200 OK). • Authentication isn’t failing (it’s a 404, not a 403/407). • The number/extension we’re dialing is in the VAPI panel -Time 13:30:39 Spain time - I dont have call id, the call do not appear on the logs Thanks for any pointers! https://cdn.discordapp.com/attachments/1390300679586713693/1390300679788167378/Captura_de_pantalla_2025-07-03_135603.png?ex=6867c1e8&is=68667068&hm=9d0e6b5f010a35e427fad2aca4e2bc1dab7d564820cce0e0a78e4dd64f664e6d&

Hey, can you send me a screen recording video that walks through the issue you are facing? It would be easier for me to understand your issue and help you out with it.

hi, in https://discord.com/channels/1211482211119796234/1388219480944939069/1388756538243678300 i saw you shared "-sip.vapi.ai", it is correct? or is ".sip.vapi.ai", with "." or "-"? with the "-" i get 404 not found, with "." i get 401 unathorized

It should be dot and did you added the signaling IP address when creating the credential which should whitelist it.

hi, ok, will use dot, Initialy yes, i added my public IP addres to the credential, is nedded to add interal IP?

Hey @kingdevil you don't need to add internal IP addresses until the traffic originates from it from this internal IP.

ok, so, as the calls are not registering in the call logs, where can i see the SIP traces in your side to troubleshoot the problem?

Hey @kingdevil, if you are doing outbound calls, just share the phone number ID with me. I'll share the required details with you. Why calls are not connecting to us. If you are doing inbound calls, then you have to ask your telephony for the PCAP file and the SIP traces.

hi, i can share with you the pcap and the sip traces, i will share it in private message

Yes please share with me in private messages.

hi, we are speaking in MD, right?

Hey kingdevil, I wanted to let you know that we're managing a high volume of support requests at the moment, so our response time might be a bit slower than usual. I truly appreciate your understanding and will get back to you as soon as possible!  Thanks again for your patience!

hi, dont worry, we can wait as this is not on production right now

Hi, First off, we want to sincerely apologize for the delay in getting back to you. We understand how frustrating it is to wait - especially when you're counting on us - and we owe you a clear explanation of what’s been happening and how we’re addressing it. Over the past few weeks, we've seen a significant increase in support requests. While this reflects exciting growth, it has also stretched our small team and exposed some real challenges in scaling our support operations. To improve your experience, we’ve taken a step back to reassess our approach. Here’s what we’re implementing: - Smarter Support Through Automation: We’re investing in our AI support systems to help you resolve issues more efficiently. Soon, our support bot will offer expanded capabilities, making it easier to access accurate, instant help—particularly for common or repetitive queries. - Expanding the Support Team: To meet growing demand, we’re adding 2–3 new team members focused on managing support volume and improving response times. - Prioritized SLAs for High-Usage Accounts: We’re introducing service level improvements for users who are growing with us: - Accounts with usage over 1,000 minutes/month will receive prioritized support. - For all general inquiries, we’re establishing a standardized 48-hour response time. We’re confident these steps will lead to faster, more reliable support and help us better serve you as you grow with us. Also, in case you still need help with this ongoing ticket, do let us know, and we will help you get this resolved as soon as possible. Thank you for your continued patience and for being part of our journey. Warm regards, Vapi Team

dm sent to you