Factors affecting VoIP quality

There are several factors that profoundly impact the quality of voice over the Internet. These factors can be described in terms of their general affect on VoIP quality: Negative or Positive.Negative FactorsOf the three negative factors for VoIP performance, the first one is delay, which results in echo and talker overlap. The second one is jitter, which is essentially the variation in delay. The third problem is packet loss. These factors are explained in much more detail below.DelayDelay results in echo and talker overlap. Echo becomes a problem when the round-trip delay becomes high. Talker overlap (the problem of one caller stepping over the other talker’s speech) becomes significant if the one-way delay becomes greater than 250 milliseconds.JitterJitter is essentially the variation in delay. This is primarily introduced because of the variation in inter-packet arrival time.