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Knowledgebase: Unified Communications > SmartNode > SmartWare
What are the available Voice Codecs?
Posted by Elena Brambilla, Last modified by Daniel Lizaola on 14 December 2017 05:01 PM

 

 

Codec
Net Bandwidth per call (kbps)
Used Bandwidth per call (kbps)
Min. Compression Delay (ms)
Usage
G.711 a-law
64
96
10
Uncompressed, best voice quality, European audio-digitizing
G.711 u-law
64
96
10
Uncompressed, best voice quality, American audio-digitizing
G.723.1
6.3
17
30
Good voice quality at lowest bandwidth, like analog phone, acceptable delay

G.729
G.729a
G.729b

8
40
10
Best relationship between voice quality and used bandwidth, low delay. G.729b is the silence suppression scheme for G.729a and is supported by the SmartNode family. For the sake of simplicity SmartWare and SmartNode always use the term G.729a, implicitly meaning G.729a and G.729b.
transparent
64
96
10
Transparent ISDN data, no echo cancellation

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