Codec bandwidth

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VoIP Codec Comparison Chart

Codec Speed 1.5 Mbps Link 256 Kbps Link
--------------- ------------------------------- ------------------------- -------------------------
μ-Law 64 Kbps 24 4
G.723.1 5.3/6.3 Kbps 289/243 44/40
G.726 16/24/32/40 Kbps 96/64/48/38 16/10/8/6
G.729 8 Kbps 192 32
GSM 13 Kbps 118 19
iLBC 15 Kbps 102 19
LPC-10 2.5 Kbps 614 102
Speex 2.15 to 44.2 Kbps 714 to 34 119/5

NOTE:To get a more realistic value you should take 20% off the number of channels.

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