Blocking inbound by caller ID using other than blacklist

[cynjut (Dave Burgess)]

Here’s another approach:

Of Robocalls and Whitelists

[The functionality of these scripts is largely superseded by the AllowList Module] … of cabbages and kings. I have several DIDs published for business purposes, and as time passes, they become incrementally more prone to robocalls. This is to the point now that robocalls may well outnumber legitimate calls, with some days being intolerable. The FreePBX blacklist is unable to deal with them effectively because there is no consistency to the Caller ID, nor have I wanted to force all callers to n…