Voice Over Internet Protocol (VOIP)

Definition: A protocol set of rules for communication

Definition: VOIP is the protocol which governs voice communication by sending the audio over the internet.

VOIP can be implemented by phone handsets which is connected to a computer network. Some popular apps also allow for VOIP, e.g Skype, Whatsapp, Discord, Telegram etc.


Figure 9 VOIP Implementation (Credit: http://cat5comms.com/landlines-and-voip/)

Some reasons why we use VOIP are:

  • VOIP is cheaper than traditional telephone
  • You can use VOIP if you do not have access to a phone
  • VOIP has a high audio quality.

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