Telephone Switching Before Computers
22:28
”THE TELEPHONE EXCHANGE” 1982 BRITISH TELECOMMUNICATIONS DOCUMENTARY MONDIAL HOUSE XD47854
43:15
[Panel] Sarah troubleshoots Incoming #30
25:31
AT&T Bell Labs 1 ESS (Electornic Switching System) Manufacturing Processes (1965)
42:17
AT&T Telessentials Switching TC1604
22:38
My vintage Strowger Telephone Exchange Demonstrator
17:12
BT Educational Service - call routing from UK to Australia
2:06:25
The Best Of 1985 Part 1
33:08