IAX2 Extensions and auto answer header

I am using an IAX2 extension on a Zoiper softclient.
I would like to send an auto answer header to my extension.

Can I send auto answer headers in IAX2 at all?

Hi, I know this one is from quite a while ago, but did you ever find a solution?

I ended up using SIP. Auto answer is not a problem but with Zoiper I think you need the pro version.

Got it…alright, thanks!