What is PRI and SIP?

Related questions

1. What is a test phone number?
2. How much is a home intercom system?
3. How do wireless intercom systems work?
4. What is intercom used for?
5. Do I need a special phone for VoIP?
6. How much does intercom cost?
7. How can I ring my own landline?
8. What's the difference between PRI and SIP?
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Tags

1. #additional
2. #trunks
3. #other
4. #therefore
5. #rather
6. #voice
7. #virtual
8. #hardware
9. #protocol
10. #technology
11. #require
12. #telephone
13. #telephony
14. #network
15. #internet
16. #protocols
17. #deploy
18. #networking
19. #deliver