Follow the troubleshooting methods mentioned below: METHOD 1: First thing you have to check is verify whether the micro filter is plugged properly into the phone socket or not. METHOD 2: Unplug the Sky Hub from the micro filter and then plug it back again. Examine whether the Sky Hub is attached properly with the micro filter. METHOD 3: Check whether the micro filter is connected properly to your phone line. Also inspect if the microfilter is connected to other …