Hmm, I've recently purchased a 3130 and am looking at the various ways I could deploy it. I'm no expert by any means but as far as I can see it's passive in the sense that an intermediate program needs to request the data from the camera and issue it to the NAS. The camera cannot be programmed to do this on its own. I've configured WebcamXP for example to accept streaming frames off the camera and upload images over FTP at a set interval.
If you need the manual, just shout. Let us know how you resolve this.