A problem with NVR Hikvision DS-7616NI-SE/P firmware 3.0.15 and IPC HDB 4300C-A DAHUA firmware DH_IPCHX5(4)XXX-Adreia_EngPStream3_V2.420.009.0.R.20151106 . The camera connected to the NVR protocol onvif is working around for two days, and then hangs NVR. If advance to reboot, it will work the next two days.