An Approach to Improve QoS Parameter using VoIP

Abstract

Now a days, Information and Communication technology plays vital role to communicate over the Internet. Internet is one of the most important communications intermediate in the world. Mostly, PSTN (Public Switch Telephone Network) is used for communication but PSTN is not well suited for real time multimedia applications. Recently, VoIP (Voice over Internet Protocol) is also a popularly increased communications technology which recently having an exponential evolution of usage Internet. In this VoIP is focused on Wireless LAN (WLAN) network for real time multimedia application. But, VoIP over WLAN faces many challenges, due to the loose nature of wireless network. In addition, to maintain QoS, Security are the key concern in VoIP network. Existing solutions used several techniques such as Hybrid network, Peer­ to­Peer network to provide decent QoS as well as Privacy. But, some vulnerability occurs between Security and QoS. To overcome these issues propose novel Client­Server Network in which AES algorithm used for encryption/decryption process. Also, network is based on SCTP protocol which is responsible for reliable and secure packet transmission over Internet. So, by using novel network analyzes the performance of QoS and Security concerns in VoIP.

Keywords: VoIP; Authentication; Security; QoS.