Yealink T20P

Enterprise IP Phone Using the Basic Phone Functions
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WatchDog
When 'WatchDog' function is 'Enabled', phone will auto reboot after 10 seconds if some
important process of phone crash. When 'Disable' the function , the phone will not
reboot.
Configure watchdog via web interface：
Choose phone-> Preference->WatchDog, in the pull-down menu, choose enable or
disable this function.