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Summary: By: Zizhi Qiao September 2001
MSc Integrated Services & Intelligent
Networks Engineering
D.C.E.E. University of Plymouth
· Background and introduction
· ROHC study
· CRC and one-bit correction study
· Test and simulation
· Reaction steps modifications
· Conclusions
Two ways to transport voice:
· Circuit switching
Setup -- transport -- release
High QoS and high usage of bandwidth
· Packet switching
Packet headers include full information for delivery in the network.
Several applications in one carrier, high bandwidth efficiency
But: Pack/unpack delay, queuing delay, wrong sequence,
jitter etc.
A big problem in voice transport over IP
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