said by rahvin112 :

They will likely put it in it's own spectrum with QOS just like they do with Comcast phone which is VOIP but isn't carried on the same channel as your internet. What this will do if implemented using moderate power femtocells is make Clearwire internet available anywhere Comcast has customers. Could be HUGE for Clearwire and might make them a truely third competitor to lower prices. Because WiMax as built is an all IP network internet and voice are the same thing so Comcast won't be able to restrict it.