How does VoIP PSTN work?

Related questions

1. Why do we need VoIP?
2. What is called Sip?
3. What is cloud phone system?
4. Is ISDN a VoIP?
5. Can I use a normal phone for VoIP?
6. Do I need a landline for VoIP?
7. What is PSTN used for?
8. Do you need special phones for VoIP?
9. Can I use VoIP phone at home?
10. What is the advantage of IP phone?

Tags

1. #works
2. #network
3. #convert
4. #gateway
5. #receipt
6. #depending
7. #where
8. #using
9. #voice
10. #originates
11. #calling
12. #proper
13. #bridge
14. #traffic
15. #destination
16. #between