Certain Investigation of Qos in VoIP over 4G Networks

In earlier wireless technology the transmission of voice with high quality is very difficult. But later this problem is solved by Voice over Internet Protocol which uses traditional Internet Protocol to transmit voice as packets. To transmit the voice over larger areas is done easily by using WiMAX. However highly-developed areas are using WiFi which is growing in wireless technology. So for transmitting the voice traffic over a wide area with high Quality of Service we can interface both WiMAX and WiFi. But the Quality of voice degrades when the number of users increases in the network. This paper deals with the increase in Quality of voice with the help of MOS and providing security.