A new optimum jitter protection for conversational VoIP

In Voice-over-IP, jitter buffers are introduced at both sides of the sender and the receiver to compensate for delay jitters. A longer buffer reduces the possibility of packet loss and packet disorder at the expense of increasing conversational delays. In this paper, we propose a novel criterion for the calling quality of conversational VoIP, including the effect of delay on interactivity of a conversation. Using this criterion, we propose a quality-based playout scheduling algorithm with improved voice quality and reduced conversational delays. The simulation results show that the proposed algorithm can achieve the best calling quality compared with other algorithms.