That only appears to work for VoIP (voice over Internet), not regular landlines. Otherwise I’d set it up for my dad, since his landline gets lots of robocalls. (My cell phone gets some, despite it being on the Do Not Call list. And NoMoRoBo doesn’t support Android yet. 
)
But, to get back on topic, Dad doesn’t take phone surveys. I might, if I have the time and feel generous. It’s a difficult job and I sympathize.
