Hello, it is really annoying. We are having serious problems with SIP connections. Incoming calls have been problematic from the beginning, we gave the necessary permissions etc. everything, it called for a while but then it was cut off. Now outgoing calls, if it calls for one day, it does not call for two days. When we look at the SIP logs in our system, there is no incoming call, that is, there is no request from vapi to SIP in any way. We use BYO Sip Trunk, we have a contract with a company and we do not have problems when we call with other applications. https://cdn.discordapp.com/attachments/1372915358134046730/1372915358486495353/image.png?ex=68288290&is=68273110&hm=b986ddb3679dcd135f2617f4cb71bad818a78f8b4ca10f92ba32ac38aac11336& https://cdn.discordapp.com/attachments/1372915358134046730/1372915358909857843/image.png?ex=68288291&is=68273111&hm=c8523d07fa614501e005164e4f61703c6c4cd2a0f4ec338576091bd7b53a1218& https://cdn.discordapp.com/attachments/1372915358134046730/1372915359207919707/calls-export-2025-05-16-12-30-17.csv?ex=68288291&is=68273111&hm=7cfd79e6ecf202a65b4f3b992e79b96b59c0c733af4e1f9cf9b330f9a9feca19&

Hey! To help track down this issue, could you share: - 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!

I have already sent all the information above. We do not receive any calls from you to our SIP address.

This weekend, Shubham Bajaj will look into it when online thanks

@Shubham Bajaj when is online the problem still persists.

From our logs: 🔵 20:10:50:699 Received Phone Number Call Status Update: { "call_sid": "9fe713f0-22d2-4b7f-8717-360fc36eec16", "direction": "outbound", "from": "+903224510832", "to": "+905452162474", "call_id": "33099268-af90-123e-9d90-0e9bad96720b", "sip_status": 403, "sip_reason": "Forbidden", "call_status": "failed", "account_sid": "b69804b1-86f7-4805-904a-8dc8be29d8d6", "trace_id": "c24a5712e3a3e3e1b7819b2c332b42ce",

Thank you, I've been waiting for this log for 4 days.

It looks like your telephony provider might be declining the request. Have you whitelisted the Vapi IP address?

yes

Hey do you have any latest call_id that you can share with it? I can take a look into the calls.

call id : 0c85b9c9-06f4-4069-90b4-5d5d30e2817f

"call_id": "92ffa131-b0c5-123e-0581-0e61660d4def",
  "sip_status": 403,
  "sip_reason": "Forbidden",
  "call_status": "failed",

 09:10:19:163 Call a7308d2b-82ed-48e6-bb91-6d0e8bf6423f Waited 300s But Transport Never Connected.

Please make sure the IPs are whitelisted as documented in the SIP trunk guide and verify that the credentials are correctly entered.

Hello, good evening, i need help for error caused in call logs: call.in-progress.error-sip-telephony-provider-failed-to-connect-call

Could you please provide the call id?

of course, 33079852-05af-44ca-bab1-0631c8924532

Hey, did you delete your phone number? I can't find logs related to it for this call. If you did, we can't look for more logs without it. First, create another call and share the call ID with us.

i had deleted to create a new one thinking it could be error in the credentials but the error persisted

"call_id": "7929abb7-b27f-123e-5e8d-0256b1e3b7ad",
  "sip_status": 407,
  "sip_reason": "Proxy Authentication Required",
  "call_status": "failed",

Please verify your credentials