VoIP or Voice over Internet Protocol, has become a better, cheaper for business telephone communications. These systems use Internet connections instead of the BT network and therefore the costs are significantly reduced. It is an operator of internet telephony, smart VoIP services offered by the hardware and the necessary support to the company, in turn, pay a monthly fee. Contrary to the nature of the service a "phone" is not always necessary, as it is now possible to communicate without devices, (by the computer).