Vo ip


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Vo ip

  1. 1. Gibrán Lamas David Gonzalez
  2. 2.  There are two fundamental technologies that are necessary for the existence of  VoIP. The first, and most widely used, is the telephone. The second technology is the Internet.
  3. 3.  Voice over Internet Protocol (VoIP) technology lets you use the Internet to make and receive telephone calls.
  4. 4.  To transport voice over a data network, the human voice must be “packetized.”  This process contrasts significantly with the circuit-switching mechanism used in traditional networks. Voice packetization involves appending headers with routing information to the voice data. Multiple voice samples are combined into a packet and the voice packet is
  5. 5.  switched hop-by-hop through the network.  To summarize, the voice signal is broken up into small pieces (packets) and sent though the network one-by-one. The process of packetization compresses the callers voice signal, transfers it over the IP network, and it is then decompressed at the other end.
  6. 6.  VoIP is available in a wide range of services. Some basic, free VoIP services require all parties to be at their computers to make or receive calls. Others let you call from a traditional telephone handset or even a cell phone to any other phone.
  7. 7. VoIP and unified communications enable you to: Reduce travel and training costs, thanks to web and video conferencing 2. Easily grow your phone system as needed 3. Have one phone number ring simultaneously on multiple devices, helping employees stay connected to each other and to customers 4. Reduce your phone charges 5. Have a single network for voice and data, simplifying management and reducing costs 6. Access your phone system's features at home or at client offices, in airports and hotels—anywhere you've got a broadband connection  1.
  8. 8.  http://www.itpvoip.com/Special/?tracking_i d=3099  http://www.vocalocity.com/lp-genvoipreview/  Skype