Question about XBOX One and DVRs

I know that the console itself isn't a tuner or a DVR, but has HDMI passthrough and a program guide to control channel watching...but what about DVR functions? I'm talking about the standard play/pause, ffwd/rwd, plus recording and playback of programs on the cablebox's harddrive. Will these functions be accessible through the XBOX's interface, and Kinect voice commands? Or will one need to essentially leave the XBOX environment to get to those functions?