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Voice over Internet Protocol (VoIP) has become a recent topic of research in both the Internet and the Telecommunication industry. The terrific increase in popularity of VoIP services is a result of huge growth in broadband usage. Both in wired as well as in wireless communication, VoIP is replacing the traditional telephony techniques. To ensure a good quality speech through VoIP, certain Quality...
End-user acceptance criteria of live-stream based, interactive applications are different from traditional B2B or B2C applications. For example, if users sense disruptions in audio or video stream quality, they may quickly form a negative opinion. The Quality of Experience (QoE) in such live-stream applications is, thus, based on perception, and is open to subjective interpretations. QoE can be affected...
This contribution addresses the case when live packet-switched video is used to enrich circuit-switched speech calls in mobile telephony. Circuit-switched and packet-switched transmissions generally operate on completely different transmission paths resulting in different QoS in terms of delay and loss rates. In this case, video and audio data recorded at the same time are not multiplexed together...
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