Update on the morning of 4 September. With the router disconnected and only a corded phone plugged into the filtered face plate, a ghost call of just two rings occurred at 23:51

Phone in use was brand new basic instrument from Sainsbury's costing £9.99 to satisfy a required test by Zen. Apart from month's of disturbed sleep and £20 cost to change the number and now another £10 for a phone not really needed, there's not a lot more I can say without the entry being censored.

Waiting for Zen's help desk to wake up to report this development. Aren't the lucky to have a good nights sleep whereas their customer is disturbed night after night.

Hmm, wondering if this is sounding more like a fault in the voice equipment in the exchange. Maybe there is an error on the port that is creating the ghost call.

EDIT: Thinking of ghost calls, maybe you have a poltergeist?


NB: For avoidance of doubt that edit is a joke

Edited by ian72 (Thu 04-Sep-14 08:43:43)

The point is the filter in the faceplate may be duff. You need a dangly filter into the test socket.

In reply to a post by RobertoS:

There is scope for a cockup in the Kelly's installation, and cockups by them are what we often see.

I described a valid backwiring installation, asking if that is what has been done .

If that isn't what he has done, giving rise to an unfiltered phone feed somewhere, we could get the effect reported.

As far as I can make out, a phone will only ring if it receives AC voltage across the pair or it receives battery contact on terminal three.

Tens of thousands of customer reported faults visited, I have never found otherwise. I am always happy to learn and would be grateful for you to explain how an unfiltered phone feed can cause spontaneous ringing.

My money is on overnight testing routines causing this problem as it only happens at night and the tester reverses polarity rapidly during insulation tests plus I have seen this before.