ATLANTA – Over 15,500 delegates visited Atlanta for the 2006 NCTA National Show, to take in sessions and visit 360 exhibiting companies. Here's more of what we heard and saw on the floor of the Georgia World Congress Centre. *** Sprint/Nextel will be field testing a quad play wireless service with Time Warner Cable, Comcast, Cox Communications and Bright House Networks in 2007. More MSO partners are expected to come on board the cellular/WiFi/cable data solution, said Sprint president John Garcia, during a session. *** With Time Warner Cable abandoning the S-A "Sara" guide in favor of its own, other...