Might I suggest you review this thread
as this was pretty much my situation. The solution requires the purchase of a Truecall
device (which are not cheap at circa £100) but based on my and my mothers experience (also a user) they are reliable (running > 4 years).
The Truecall is highly configurable and very effective - since installed I don’t recall ever having been disturbed by a spam call (typically spammers drop the call and move onto more profitable “victims”) Obviously the automated type of messages, just talk to themselves.
So the output from your ATA would go to the Truecall (would need RJ11 to female BT socket adapter) with the output from the Truecall going from BT female to a standard phone (RJ11)
Not a cheap solution, but in my experience, highly effective.
Edited by farrinaf (Sat 24-Apr-21 13:40:33)