Dennehys Cross Ericsson ARF Crossbar Telephone Exchange
1:54:48
Telephone Switching Before Computers
19:31
Telephone Exchanges in Australia circa 1980
13:41
ERICSSON MD110 BC7 (LPU6+MEU9)
10:56
Strowger CAA-61-stara Centrala telefoniczna old exchange
18:32
Crossbar telephone exchange demo
12:35
80s CBS News Street Stories - Phone phreaking
27:08
At the Connections Museum: the insane telephone technology that led to today's computers
2:16