call.in-progress.error-sip-telephony-provider-failed-to-connect-call

When I try to call from my voip cli, it goes into voicemail and I can hear the voicemail, but on vapi it just gives me this message.
"An error occurred in this call: call.in-progress.error-sip-telephony-provider-failed-to-connect-call"
call id 94acd47e-b5f2-40ce-8f33-71b92ec4085a
27.05.2025 11:07:18 44xxxxxxxx 39xxxxxxxxx Italy OMNITEL - mobile no answer €0.033 00:00:00 €0
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