My vendor told me that the only way to do this is by upgrading our call center feature/call group feature to the next version which would then allow you to identify inbound numbers and do something with them before passing it to the auto attendent wiht the vector.
Still never figured out how to do it with a group of numbers via the vector table as it stands now like people state, and the EC500 is kind of useless if you actually want to use it for say, hmm...EC500 for users? And you can only do 1-1 with EC500 anyway, if you have 20 numbers you want to drop, that won't work either.
If someone has a detailed config for the vector method, that would be good.