Discuss Telephone wiring guide and fault finding in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

You must use a BB filter on all sockets or you will get a hissing noise from the socket without the filter. Thats what the filter does it filters out the hiss.

Are you using filters on all sockets?
 
Many thanks to Phil D and others for help here - it was the splitter. I replaced the one I'd been using with the old handset I using for testing and that did the trick. (Didn't think there was anything in them to go wrong).
 

Reply to Telephone wiring guide and fault finding in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

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