I have been used Adelphia High Speed Internet It was turned over to Comcast.
I use Comcast RCA Cable Modem & Linksys WRT300N 802.11B,G,N at my home. Also, I use Sprint CDMA 1xEVDO Sierra Wireless U595 USB Modem for travel or go out somewhere even I visit my friend's home in a small town it does not have a Cable & DSL. My friend use a wireless Internet Service on Sprint.
