T.-K. Chua and D.C. Pheanis (USA)
: VoIP, delay jitter, audio data packets,business telephone systems.
Using data networks to transport digitized voice in data packets has changed the way we communicate. The advantages of this approach, such as cost savings and ease of network management, have convinced even the skep tics. In some cases, data networks with digitized audio in data packets provide the entire audio communication sys tem for a business or institution. Voice over Internet Proto col (VoIP) has not only transformed the way we communi cate; it has also brought with it many possibilities that we never previously thought possible. Along with advantages and new possibilities, new technology also brings new challenges. Delay jitter is one of the major challenges that affects the quality of service (QoS) in VoIP. We discuss methods for handling delay jitter in VoIP. We propose a practical, effective, low-complexity tech nique for handling delay jitter. Our technique targets the business environment, which commonly uses embedded digital devices in company telephone systems. The data network for such a system could range from a simple local area network (LAN) for a small office with a few users to a complex wide-area network (WAN) for a large company with many users to telecommuting over a general public network such as the Internet.
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