Booting up the 3ESS
19:03
The Machine that Makes Your Phone Ring
26:27
The 5XB Trouble Recorder
11:06
DMS-10: The first phone call!
51:37
Powering up the IBM Z890 mainframe and teardown - (PWJ148)
27:08
At the Connections Museum: the insane telephone technology that led to today's computers
38:26
HP 115BR Divider and Clock - Part 2: Repair
35:35
All calls are failing in the Panel office!
45:15