Traditional phone lines use a physical connection which means every phone needs to have a separate wire. With the advent of modern networking VoIP phones can operate over the computer network providing a much more flexible approach to deployment. In addition VoIP call charges are lower than traditional phones providing an opportunity for cost saving. VoIP phones can also provide a wider range of features such as voicemail, caller line identification, call forwarding, call waiting, etc. On an event site the phones connect to the rest of the phone network via an internet gateway which may be connected to most of the forms of internet connectivity.