IAX2 bandwidth comparison

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Source of these measurements

Left: Packet overhead per protocol. Right: (audio-)Codecs and their average bitrate.

Packet-size in Bytes for a number of trunked-channels, for different codecs and protocols.

N.B. TCP-packets are often about 1500 bytes each. We assume these numbers are calculated and not measured, since the packet-size seems to double, each time the number of channels doubles.

N.B.2 For a two-way conversation, 2 channels are needed.