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Table 2 Codecs parameters.

From: A Comparative Survey of Adaptive Codec Solutions for VoIP over Multirate WLANs: A Capacity versus Quality Performance Trade-Off

Codec Bitrate (B) Packet size (L) MOS
G.711 64 Kbps 160 B 4.1
G.726 32 Kbps 80 B 3.85
G.729A 8 Kbps 20 B 3.7
G.723.1 5.3 Kbps 20 B 3.6