VoIP stands for Voice over Internet Protocol. It is the ability to transmit voice over the Internet and to either a receiving computer or telephone. VoIP works by what is referred to as the Packet Switching Network. Standard landline telephones use the Circuit Switching Network. The entire landline telephone system is known as the Public Switched Telephone Network. The main difference between Packet Switching...

Brazil’s telecoms companies are hunkering down in anticipation of a protracted fight for dominance as Voice over Internet Protocol (VoIP) services arrive. Empresa Brasileira de Telecomun-icaes (Embratel), the country’s privatised long-distance telephony service provider, will now offer VoIP services using the infrastructure of Brazil’s leading cable television operator, NET Servios. Embratel entered the...