TELEPHONE No. 143
used on the switching floors of GPO telephone exchanges and known
as the "Special Fault Phone".
The Telephone is effectively a wooden wall board which has fitted to it:- 2 docket holders, a hooter, a capacitor, a telephone (on a bracket No. 12), 2 notice frames and a box with a hinged lid fitted at the bottom of the board.
Faults were allocated to certain areas within the floor of the exchange and these were on paper slips called dockets. These dockets would be stored in the holders and acted upon. The lidded box held information, on cards, about the equipment that that section patrolled.
The notice frames generally held any information that the engineers felt should be held there.
Mark 3 - Bellset No. 26 fitted under
telephone bracket (1936).
Introduced circa 1934.
Circuit diagram - N243.
Circuit diagram - AT 1862.
Drawings No. 60092 and 60607.
Last revised: November 20, 2021