How to start conversation on VoIP phone?

My VoIP Phone with the Grandstream is working.

But how do I create a conversation?
Action “Assist satellite: Start conversation” is telling me:
Failed to perform the action assist_satellite.start_conversation. Built-in conversation agent does not support starting conversations

So I must be missing a step.

And if it does matter: I’m connected to the HA cloud.

Choose pipeline with LLM for Assistant . Allow calls. No need to do anything extra, just pick up the phone and start talking. If you want a call from llm, use the start_conversation action

Where do I choose it?

I googled LLM but I can’t really find what it is.

I mean in Voice assistant you select HA Cloud that everything is on external servers that have the AI power, right?

I tried Ollama local and it is great. But you need a beefy graphics card that has a high power consumption.

In the menu where you set up ollama as a conversation agent.

You should read the documentation, start with these sections.