How does PSTN call work?

Related questions

1. What is PBX cloud?
2. Is SIP Trunking the same as VoIP?
3. What is SIP call settings?
4. Do I need a landline for VoIP?
5. What is SIP calling?
6. What is difference between PBX and IP PBX?
7. What is Cloud calling?
8. Can I use VoIP phone at home?
9. How does VoIP PSTN work?
10. What does PBX stand for?

Tags

1. #routed
2. #signals
3. #users
4. #office
5. #switching
6. #switches
7. #through
8. #ultimately
9. #after
10. #telephone
11. #landline
12. #placed
13. #lines
14. #center
15. #calls
16. #allow
17. #travel
18. #another
19. #phone
20. #these
21. #central
22. #circuit
23. #voice
24. #multiple
25. #found
26. #connected