How did switchboard operators work?

Related questions

1. What are the duties of switchboard operator?
2. How many telephone operators are there?
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4. Do I need to dial 1 on a cell phone?
5. What happens if I call 411?
6. What are key skills?
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8. Can u still make collect calls?
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Tags

1. #operators
2. #1920s
3. #private
4. #distance
5. #corporate
6. #helped
7. #switchboard
8. #office
9. #provided
10. #large
11. #customers
12. #whole
13. #worked
14. #system
15. #telephone
16. #operator
17. #branch
18. #calls
19. #exchange
20. #working
21. #smoothly
22. #information