There are three different means of accessing Business VoIP. A person is able to purchase an IP phone that is capable of being connected directly to a computer or internet connection via an Ethernet connector. Alternatively, it is possible to purchase analogue telephone adaptors (ATA) which convert the analogue signal of a normal telephone to a digital signal, allowing them to be used for internet phone calls. Finally, computer to computer methods are the most feasible means of utilizing VoIP. In order to implement a computer to computer system, the user must have the appropriate software as well as a microphone, sound card and speakers or headphones. This will enable the user to send phone calls form one computer to another.

By utilizing an internet connection, it is possible to save significant amounts of money as VoIP bypasses the need for a normal telephone provider thus reducing any costs associated with these providers. The use of an internet connection means that VoIP works by utilizing a packet switch approach; this means that a connection is established for enough time to send the required data, as opposed to being established and staying open for the duration of the call (this occurs during a normal telephone call) this allows for several phone calls to occupy the same amount of space that would be occupied by one normal phone call.

VoIP is also capable of being used anywhere in the world, providing there is a suitable broadband connection. This means that people are able to receive calls on the one number, anywhere in the world.

There are some disadvantages to opting for a VoIP system to make phone calls. As VoIP is dependent on wall power, it is rendered useless in the event of a blackout. Emergency phone calls may also prove a problem should the caller not know the address they are calling from. AS VoIP utilizes IP addressed phone numbers a geographic location cannot be established, thus the emergency call operator will not know where the emergency call is to be transferred to.

As VoIP functions using an internet connection, it is also susceptible to many of the common problem associated with the internet such as latency, jitter and packet loss, which can make phone calls distorted or can cause loss of some information. Further more VoIP is susceptible to worms, hacking and viruses; however these occurrences are rare.

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