What is PBX VoIP?

Related questions

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2. Is VoIP and sip the same?
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Tags

1. #networks
2. #circuit
3. #switched
4. #network
5. #traditional
6. #standard
7. #voice
8. #exchange
9. #services
10. #protocol
11. #public
12. #similar
13. #rather
14. #through
15. #business
16. #provides
17. #system
18. #telephone
19. #internet
20. #private
21. #company