I have a 7608Ni-I2 NVR and connected to that 4 cameras 2 x ds-2cd2385FWD 1 x ds-2cd2355fwd and recently a 2385-G1 a couple of days ago looking back remotely to view my cameras but couldn't view some of the cameras, I was thinking it was due to me moving around and the mobile signal being not great. When I got home I found that two of the cameras had stopped recording and no picture was visible, A remote reboot seemed to clear this and all the cameras come back online. I checked again and once again I found two of the cameras have stopped recording (within 30mins of each other) one of the cameras is only 10wks old. Is there anything I could be checking.