If you worked on it for ten years every day it's enough to last you a lifetime. One can install it. Then there those who fix it.
When it doesn't work and to keep it going from bad keypads to dirty button contacts to water on the foor in a amp connector and a host of other basic electricity issues.
These old phone system are basic electricity.
Patients with 1a2 is a virtue. The best guys who work on this stuff are now 80 years old.
Let's move on to Tesla.
The best thing about 1a2 was that if you could fix the worst problem in a couple of hours the General Manager of AT&T needed you.
