The definition of voice over IP (VoIP) refers to a system that enables voice transmissions to be carried over any IP network. The IP systems might include the internet as well as private data networks or office LANs. An advantage of utilizing VoIP solutions is that costs are much lower than using traditional telephony infrastructure when making long-distance calls. VoIP phones enable users to route calls over the internet by converting voice data into IP packets and vice versa. While some traditional telephones offer VoIP as an option, other VoIP solutions work squarely from a web browser. These solutions are known as softphones or browser phones.