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i cant configure Zadarma SIP, i do much times via API and via Dashboard, but now its impossible.
https://cdn.discordapp.com/attachments/1401655828720779364/1401655828896944158/image.png?ex=68911137&is=688fbfb7&hm=d683a13559dd8cff2ed7be2695782ad2f8e72e4172c84fdc01151df782978800&

If you are trying to use the zadarma SIP trunk for inbound calling, there might be a more complex procedure required for that. For outbound only integrations, please follow the SIP Trunk guide specifically for Zadarma. Let us know if you have questions:

<https://docs.vapi.ai/advanced/sip/zadarma>

mmm thanks for your response Kyle. 2 weeks ago i connect zadarma for inbound in this way, but now its not working. I try the procedure you send me, but its impossible to cross the first step, its a simple crul with 3 pastes, API, Username and password, i cant be doing anything wrong, i try everything.

If you have the hard procedure and you can send me ill be gratefull.

i need an integration that work for in and outbound

Can you please send the request payload you are sending to configure zadarma?