Disclaimer: StreamVault does not host or provide any video content. All streams are sourced from third-party external providers.
Switching server…
Resume where you left off?
Auto-selected
Keyboard Shortcuts
Play / PauseSpace
Seek -10s←
Seek +10s→
FullscreenF
MuteM
PiPP
Shortcuts?
Speaking from America
1938
6.0
• 11m
•
Documentary
How long-distance telephone calls are made, from the UK to the USA. We see operators, miles of wires, and the amplification of voice transmitted across the waters. Engineers of the Post Office describe how they are impro...