Yeah. Wireless MAC Filtering is disabled. I reset it to factory defaults. One time with hardware and then reconfigure it and one time software reset in modem page but it's problem doesn't solve yet.

Yeah. Wired connection is OK. I tried other channels and the problem didn't solve. Devices are connected to the WiFi but it doesn't connect to the internet. WiFi signal strength is normal.

Model : TD-W8960N Hardware Version : V5 Firmware Version : ISP : When I connect to the WiFi network after about 30 minutes work with modem WiFi network will cut off and reconnect again for a few...