Does anyone know if it's possible to set up an Inteligent Bina in Vapi? That doesn't have an external phone number because the Inteligent Bina keeps changing the number dynamically?

To pass dynamic variables to an API Request node in a workflow, you must set them in assistantOverrides.variableValues before the call starts otherwise, {{VAR_NAME}} will be passed as a literal string..

But it's not about passing variables, I'm talking about Registering a Phone Number without a phone number. I have the SIP, with password, username, and IP, but the Inteligent Bina only works without an external number, would it be possible to do something like this?

Yes, you can register using SIP credentials to trigger the assistant, with optional variable injection via SIP headers.. https://docs.vapi.ai/advanced/sip