DVoIP: Dynamic Voice-over-IP transformations for quality of service in bandwidth constrained environments

Abstract

Voice-over-IP (VoIP) call streams suffer from poor quality when the available bandwidth drops below the minimum requirements for the call. Dynamic VoIP (DVoIP) improves quality by performing on-the-fly transformations on VoIP streams to reduce the bandwidth requirements of the call. DVoIP reduces bandwidth requirements by transcoding high-bitrate codecs to low-bandwidth ones and by aggregating the contents of multiple VoIP packets into a single DVoIP packet. With little to no increase in latency or decrease in voice quality, DVoIP can ensure zero packet loss for active calls.