Re: GEC Reliance Phone
In the 70’s I installed a number of CH100 systems. The cabinets came pre-built, were very heavy and required to be bolted to a wall. Cross connection of the cabinets and main frame were made by pre-formed cables and sockets plugged in the top of each unit.
The phones did use E link signalling which was polarity conscious. It was a quiet system,but once some office staff told me it sounds like cockroaches trying to climb out of a tin and refused to sit near it.
The larger stowger pax systems used E link signalling which accessed a marker printed circuit board, which slotted into a frame in the rear of the cabinet. This converted the E link signalling to 20pps, twice the speed of a normal 2 motion selector.
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