Low-cost wireless mesh communications based on openWRT and voice over internet protocol

Technology makes it easier for us to communicate over a distance. However, there are still many remote areas that find difficult communicate. This is due the fact communication infrastructure in some expensive build while profit will be low. paper proposes combine voice internet protocol (VoIP) mesh network implemented on openWRT router. The routers performing functions. We set up VoIP server router and enabled session initiation (SIP) clients other routers. Therefore, we only need as means of communication. experiment showed very good results, line-of-sight (LOS) condition, they limited reception distances 145 meters non-line-of-sight (NLOS) 55 meters.