Thefollowing is the definition for the acronym N.A.A. and the reason itcorresponds to Foscam cameras. 

NAAis Network Auto Adaptability function that allows for the live video feed to beadapted to the speed of the network the camera is operating on to give the bestpossible performance. When the network speed/bandwidth is slower a lower videoresolution is used to give smooth video feed playback. When the networkspeed/bandwidth is faster or less congested the video feed resolution isincreased so that the live feed has higher video quality.