Hi, I can remember the Gfeller. We had several installed in our local area, Eastbourne. I was trained on them and looked after two or three. They were only a temporary fix until new cables or additional cable pairs could be installed. Mainly used for new blocks of flats and the customers were carefully chosen. They could usually be swopped in and out of the system if complaints were made. I remember one being installed in a local village opposite the Post Office. The systems themselves did not give many mechanical problems.
