BT Educational Service - call routing from UK to Australia
16:19
End of an Era | BT Heritage
10:48
A tour of AT&T's Network Operations Center (1979) - AT&T Archives
46:30
Hanging On The Phone - British Telecom Documentary 2001
11:41
BT Engineering training film (1987) - "Charging Matters"
16:47
Multiply and Divide (1979) GPO UK Telephone Directory Production - UK Industrial Film
37:31
Rotary Phones: the Call of History
54:27
The Secrets Of Cornwall - Part 1 - Communications
1:55:27