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Knowledge Centre > 
eu-bullet.gifKnowledge Centre
eu-bullet.gif1. What is VoIP?
eu-bullet.gif2. How does a VoIP call work?
eu-bullet.gif3. What are VoIP call protocols?
eu-bullet.gif4. What is H323?
eu-bullet.gif5. What is SIP?
eu-bullet.gif6. VoIP versus IP Telephony
eu-bullet.gif7. What are the key components of a VoIP network?
eu-bullet.gif8. What devices do we need to place a VoIP call?
eu-bullet.gif9. What are IP Phones?
eu-bullet.gif10. What is a VoIP Gateway?
eu-bullet.gif11. What is an ATA?
eu-bullet.gif12. What is a VoIP gateway? How about a gatekeeper?
eu-bullet.gif13. What is a SIP Proxy?
eu-bullet.gif14. What is a SIP trunk?
eu-bullet.gif15. What is a SIP URI?
eu-bullet.gif16. What is a CODEC?
eu-bullet.gif17. The benefits of using VoIP?
eu-bullet.gif18. How do I set up a simple VoIP network on an existing LAN?
eu-bullet.gif19. What is a DDI?
eu-bullet.gif20. What are PBXs?
eu-bullet.gif21. What functions does a PBX perform?
eu-bullet.gif22. What is an IP PBX?
eu-bullet.gif23. What does an ITSP do?
20. What are PBXs?
A Private Branch Exchange (also called PBX, Private Business eXchange or PABX for Private Automatic Branch eXchange) is a telephone exchange that serves a particular business or office, as opposed to one a common carrier or telephone company operates for many businesses or for the general public.
     
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