Because of too many telemarketing aggressive calls (about 30/day), I decided to buy the equipment above. I was afraid that it didn’t work in Italy or with my Fiber Router. Instead all works great. And it is easy to delete a number from the block list too. You can use both RED BLOCK BUTTON or pressing # and then 2 on the phone during the unwanted call. And there is a way to automatically avoid also private calls.
Now I can block 1.500 numbers, a lot more than my 20 numbers black list of my Siemens Dect.
If you, like me, are tired about all these telemarketing calls, I suggest to you this equipment.