Forward if busy on incoming call on SIPStation trunk

Is there a feature where I can configure a forward if busy number on SIPStation trunks?
Let’s say I receive an incoming call and all my trunks are busy, the call would forward to an alternate number.

Any ideas if that’s possible?

No but you can enable burst mode in SIPStation which will still deliver the call to you but at a per minute rate.

And how does that burst mode work in delivering the call to me?