AT&T and Comcast announce system to combat robocalls

AT&T and Comcast are partnering to authenticate calls made between the two networks, letting customers know when there’s a genuine caller — not a spammer — on the phone. It won’t cover every call AT&T and Comcast customers receive, but it’s a step in the right direction to battling the scourge of robocalls.
AT&T says the deal is likely the “nation’s first” to authenticate calls between two providers through the SHAKEN/STIR (which stand