This paper describes networking concept using powerline networks from end users to primary substation to support voice and data communications. Different MAC protocols which are contention and contentionless based such as CSMA/CD, Aloha systems, CDMA, TDMA and FDMA are analysed to identify which protocol is appropriate for data communication from data switches to Bridging routers at distribution transformers. Token bus is used to collect IP packets to primary router. Expected traffic load, Queueing delay and throughput are used to determine the required MAC protocol to support VoIP over powerline network.