Muhammad Naveed

Hi TL-SC4171G is connected with LAN (behind firewall) and videos are recorded on xp (SP2). It was working fine one month ago but now as office closed and power is off (CCTV, switches and XP (system) all are on UPS) CCTV stops recording unless we unplug and plug network cable or ping to CCTV or plug and unplug power cable of CAM. During working days and hours it works fine but on week ends it lost connectivity. CCTV lights remain on 24/7 but no recordings in idle time. Please help