How many different ways can we cause trouble in the 5XB?
41:36
Why isn't the 1XB completing calls?
26:27
The 5XB Trouble Recorder
23:02
Soyuz "Globus" Mechanical Navigation Computer Part 1: Grand Opening
31:12
Full Mechanical: The Panel Telephone Switch
30:32
All About Telephone Power Plants
43:15
[Panel] Sarah troubleshoots Incoming #30
19:03
The Machine that Makes Your Phone Ring
33:17