Various shots of the women wearing headphones working at London telephone exchange. Rows of women at work, talking, listening and directing the calls.
Sir Kingsley Wood, the Postmaster General, opens new telephone exchange in London.
The Lord Mayor of London and the Post Master General open international phone exchange.
Fascinating glimpse inside London's Overseas Telephone Exchange - we get to eavesdrop on a few calls to foreign lands.
The Home Guard carry out exercises in bombed out London.
The Queen makes Trunk phone call from the exchange in Bristol to Lord Provost of Edinburgh.
A man dials 'TIM' then we hear and see the workings of the speaking clock.
Quickly edited sequence of different methods of communicating information.