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VOIP

VOIP. By Will Peeden. What is VOIP?. Voice over Internet Protocol A way to make phone calls over the internet. A way to bypass the standard phone company and their charges. How does VoIP work?.

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VOIP

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  1. VOIP By Will Peeden

  2. What is VOIP? • Voice over Internet Protocol • A way to make phone calls over the internet. • A way to bypass the standard phone company and their charges.

  3. How does VoIP work? • Traditional analog signals are converted to digital and sent through the internet to a VoIP service provider. • VoIP uses the packet-switching method to transfer the data which is much more efficient than circuit switching.

  4. Different ways to use VoIP • Connect your regular phone to an ATA (analog telephone adapter). • Install software on your computer that will let you make calls with your microphone and speakers. • Use a VoIP phone that is basically a telephone with an ATA built in.

  5. Typical Analog Telephone Adapter

  6. Advantages of VoIP • VoIP is much cheaper than traditional land lines. • No extra charges for long distance calls. • Anywhere you can connect to the internet you can make and receive phone calls. • VoIP can integrate with other internet applications such as video conversation.

  7. Disadvantages • If your power goes out, so does your VoIP service. • Some VoIP service providers don’t offer 911 emergency because it’s hard to determine which 911 center to route a call. • Errors with your internet connection will adversely affect phone calls. • VoIP is susceptible to worms, viruses and hacking.

  8. Is VoIP secure? • Over 90% of VoIP providers use a public known codex and a publicly known protocol to transport voice conversations. • A VoIP service should compress your voice into encryption packets to travel across the internet, and return back to voice at its destination.

  9. Quality of VoIP calls • Packets can be lost during transmission, resulting in your voice being fragmented. • Delayed packets can cause your voice to be jittery or echoed. • Any types of “hiccups” in your connection will reduce quality.

  10. Convenient Features of VoIP • Features like caller id, call waiting, and call forwarding are usually included in packages. • Voicemail, e-mail alerts to new voicemail, and web access to voicemail. • Online management of your account, features, settings, etc. • Computer Dialing

  11. Some technical details • The H.323 protocol is currently the most widely used. • The ITU recommends H.323 because it provides audio-visual communication sessions on any packet network. • There are other protocols as well, which can cause problems if two different protocols try to communicate. • Uses soft switches to find the correct IP address to route calls.

  12. Questions?

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