Phone Service voice service operates over broadband internet connections such as cable modems, DSL, T1 and other circuits using Voice Over Internet Protocol “VOIP” as opposed to the TDM connections used by phone companies. The VOIP phone adaptor provided by changes voice signals from your phone into VOIP packets that travel over your internet connection along with email and web page packets. The VOIP packets are then routed to the switch which connects VOIP callers with other landline, cellular and international phone users over the traditional phone network.