Which parameters should I take into consideration when I calculate the bandwidth of a channel that supports 10 calls simultaneously, using codec G.729b (VAD)?
There are a number of parameters. Here are a couple of good presentations from Columbia University describing the major ones:
Analysis of On-Off Patterns in VoIP and Their Effect on Voice www.cs.columbia.edu/~wenyu/papers/ic3n-slide.pdf
Analysis of talk spurts distribution and performance of G.729B www1.cs.columbia.edu/~wenyu/papers/vad-talk.pdf
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