A look around trunk telephone exchange in disused Underground tunnels beneath Holborn.
No title. Trunk telephone exchange under city, Holborn, London.
Travelling shot through trunk testing bay at the underground exchange, row of men are operating switchboard. C/U engineer working in trunk testing bay. Tracking shot through trunk testing bay. M/S illuminated sign hanging on wall which gives directions to various tunnels. C/U sign: "Tea Bar Alley", pan to show section of tunnel with tables in it. M/S of a small mechanical train being driven through tunnel. C/U sign: "Goods Alley". Camera pans round to show another long tunnel. Tracking shot of automatic switch gear.
M/S looking down tunnel full of cables. C/U of cables. M/S of engineer in front of control panel. C/U engineer speaking into telephone. M/S tunnel where power is generated: there are large panels with switch gear and electrical dials. C/U of a large dial. M/S of engineer looking at dials. M/S of engineer throwing in a large electrical switch. M/S of man working at Telex machine, pan to show the Telex Room (the nerve centre of the exchange). C/U of man at a keyboard of a teleprinter. L/S of the Telex Room.