VoIP (Voice over Internet Protocol) allows a person to make a phone call by utilizing an existing internet connection. A normal phone call utilizes an approach known as circuit switching in order to transfer a phone call. Circuit switching involves the establishment of a connection between two points over a dedicated line. This connect must remain open for the duration of the phone call. VoIP works by using the same approach as the internet; this is known as packet switching. Packet switching involves the establishment of a connection that only lasts for a short amount of time and is able to travel along a number of different paths. The time in which the connection remains open is sufficient to send and receive ‘packets’ of information. By doing this, VoIP minimizes the amount of transmission time that a phone call occupies, thus making VoIP a much more cost-effective option than a standard phone service. The fact that calls occupy minimal transmission time combined with the number of paths possible for the signal to travel means that multiple phone calls made with a VoIP system only use the same amount of space as a single phone call made using a standard phone line.
 
 Implementing a VoIP system will also enable the user to bypass the need for a general phone provider, thus this will eliminate any unnecessary costs associated with normal phone service providers. Many people have opted for the VoIP system due to the vast amount of money the system allows them to save.
 
 The system is capable of being used anywhere where a suitable broadband connection can be accessed, thus it is possible for a person to be contacted anywhere in the world on the same number. This makes the VoIP system and extremely functional options for business people.
 
 When implementing a VoIP system the user must also have a suitable internet connection as well as suitable equipment with which to make the call. Equipment includes analogue telephone adaptors (ATA) to enable a person to use a normal phone with a VoIP system, IP phones designed especially to connect to a computer or internet connection, or a computer with the appropriate software in order to send calls directly from one computer to another.

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