one way is with ANI abuse. the 2nd is abusing callID transmitters and protocol. i think the 2nd way may have been mitigated. it was kinda like butting into lin

one way is with ANI abuse. the 2nd is abusing callID transmitters and protocol. i think the 2nd way may have been mitigated. it was kinda like butting into line before anyone notices. if you've ever had a call when your at the phone, and you see a brief flash of a number, that instantly changes to another number, this 2nd method is likely in play