Hello and thanks for posting to our forum.
We do not have a method to screen or block incoming calls based on the caller id. If there are only a couple of numbers you would like to block, you could create a couple of sip voice users that match the numbers you want to block. When the call comes into the ADTRAN, the ADTRAN will return a busy signal as that sip voice user number exists but is not active. This may or may not be the result you want.
There is a little more discussion on this forum post: https://supportforums.adtran.com/message/5935#5935
I went ahead and flagged this post as "Correct." If you still need assistance, we would be more than happy to continue working with you on this - just let us know in a reply.