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  1. WELCOME TO PRESENTATION General Knowledge Of IT Topic : VoIP (Voice over Internet Protocol) Teacher : HY Leapcheang Name : LOEM Chanthy Class : SNA2013-A Date : 18thDecember, 2012

  2. CONTENT • Definition of VoIP • History of VoIP • Usage VoIP • Type of VoIP • What's required for VoIP? • Service of VoIP • The most popular • Advantages & Disadvantages • Conclusion • References • Questions & Answers

  3. Definition of VoIP • Voice over Internet Protocol (VoIP), is a technology that allows you to make voice calls and receive phone calls through the Internet.

  4. History of VoIP • VoIP (Voice over Internet Protocol) originated in the 1973. • It was started in 1995 by Cisco , 3Com and Vocaltec's company. • H.323,SCCP and SIP are the most protocol used in VoIP.

  5. Usage VoIP • Call directly from computer to other computer • Convert the voice signal • Business

  6. Type of VoIP • Computer to Computer • Phone to Computer • Phone to Phone • VoIP Phones

  7. What's required for VoIP? • There are requirements that support: - Internet network - VoIP software or hardware - VoIP phone service provider

  8. Service of VoIP • There are lots of services: - Skype - Google Voice - Globe7 - Ring central - Fringout - Voip.com - Phone.com - iChat

  9. Service of VoIP

  10. The most popular • There are five services: - Skype - Google Voice - iChat - Fring out - Globe7

  11. The most popular

  12. Advantages & Disadvantages • Advantages: - Low cost - Can talk with multiple people anytime - Make communication easier - Online meeting from all the other locations

  13. Advantages & Disadvantages • Disadvantages: - No secure - Low voice quality - Packet loss - VoIP does not work when internet connection down

  14. Conclusion • VoIP (Voice over Internet Protocol) is a technology that allows you to make voice calls and receive phones. The type of VoIP have four such as pc to pc, phone to pc, VoIP Phone and VoIP Adapters . It is easy to use for communication anywhere.

  15. References • http://lifehacker.com/5781404/the-five-best-voip-or-voice-chat-apps (16,11,2012) • http://www.ehow.com/list_7428047_popular-voip-providers.html (16,11,2012) • http://www.quickstartvoip.com/voip-advantages.html(23,11,2012) • http://techtips.salon.com/benefits-using-voip-22040.html(23,11,2012) • http://www.voipsupply.com/voip-headset (30,11,2012) • http://www.bloghug.com/voip-service-providers/ (30,11,2012) • http://www.voipphonetips.com/how-voip-works.html( 05,12,2012)

  16. Questions & Answers Thanks for paying attention!