International Journal of Advanced Research in Computer Engineering & Technology
Real-time services i.e. VoIP are becoming popular and are high profit earners for network service suppliers. These services are no longer limited to the wired domain and available across wireless networks. Although some of the available wireless technologies can provide support to some low-band width applications, the bandwidth needs of several multimedia applications increase the capability of these technologies. The WiMAX predicts to be one of the wireless access techniques able of supporting very high bandwidth applications. However, still there are various challenges that require to be covered to offer a slow and good quality voice link over the best-attempt WiMAX network.