Hi,
I have fixed my typo in my example, sorry for that, i have worked with another keyboard set. You do not need to change the context, just leave it like that, and the Freepbx dial plan will forward it to the right context. I do not think that you need to the use the ANI, because you are not using it in your dial plan. Please do not use the _. exten because it is not safe and you will get a warning every time you will run it.
Please provide a verbose logs of your incoming calls so I can determine what is your problem.
Use my example when you are pasting here the logs.
Thank you,
Daniel Friedman
Trixton LTD.