This idea is flawed from the start. As soon as we knew they were thinking this, someone started added redundancy layers to maintain service (let's just include white hat, companies not wanting downtime risks and not even consider the hackers), unless they're talking full on kill where they get every telco in North America to power down their data centers simultaneously, black out every satellite in the sky and shut down the phone systems.
Oh wait... they better block radio communications as well since people have been able to to do IP over HAM radio as well.
Oh... let's kill the pigeons, since people have proven they can use birds like sneaker net...
And speaking of sneakernet, they better come and get our shoes as well.
Yeah, that's going to go over real nice.
These people are idiots.