Reply To: More Network PITA

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Is that your landline ( Origin ) connection?? If so that pattern is typical of a bad joint/poor connection/random water ingress type fault. ( It also fits the pattern of dropping at periods of high usage by others { outside your household }  – 2pm to 8pm!!)

Have you taken the face-plate off your Master Socket and connected to the internal test socket using a filter?? That would eliminate any internal wiring problems if the same pattern emerged.