Debate on how far phone tapping can go.
Material related to newsreel story "Is Your Phone Tapped" - 57/51.
Various shots of women and men working on small telephone switchboard / exchange.
Women at work at London telephone exchange.
American Police telephone answering system and private housing development.
A look around trunk telephone exchange in disused Underground tunnels beneath Holborn.
Post office switchboard with telephone girls at work.
Emergency services switchboard operators + tenement building on fire.