Improving voice quality in voip

Voice quality can articulate lots of things because it depends on people?s point of view. First, it is a method of describing and evaluating speech fidelity, intelligibility, and the characteristics of the analog voice signal itself. On the other hand, it can illustrate the accomplishment of the underlying transport instrument. However, voice quality is identified as the qualitative and quantitative amount of the sound and conversation quality of a telephone call. Due to telephone industry?s exchange, existing technologies become valid in different means, and other players become involved. Thus, keeping on the main quality of a telephone call becomes increasingly complicated. Though voice quality has developed over the years to be regularly high and predictable, it is now a significant differentiating issue for new voice over packet (VoP) networks and equipment. As a result, achievement of voice quality in a relatively inexpensive, reliable, and objective way becomes very important. In this thesis, improving voice quality in Voice over IP and its factors as well as network impairments and their causes in a converged telephony and internet protocol (IP) network, all from the points of view of the network quality, is explained. Keywords: VOIP, Voice over IP, Echo, Delay, Packet loss, Clarity, Jitter.