Difference between revisions of "Bandwidth estimates"
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| + | == Audio codecs == | ||
| + | Bandwidth Requirements for Several Common VoIP Compression Algorithms | ||
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Revision as of 21:45, 30 January 2007
Audio codecs
Bandwidth Requirements for Several Common VoIP Compression Algorithms
| Codec | Bit rate | NEB |
|---|---|---|
| G.711 | 64 Kbps | 87.2 Kbps |
| G.729 | 8 Kbps | 31.2 Kbps |
| G.723.1 | 6.4 Kbps | 21.9 Kbps |
| G.723.1 | 5.3 Kbps | 20.8 Kbps |
| G.726 | 32 Kbps | 55.2 Kbps |
| G.726 | 24 Kbps | 47.2 Kbps |
| G.728 | 16 Kbps | 31.5 Kbps |
| iLBC | 15 Kbps | 27.7 Kbps |
NEB = Nominal Ethernet Bandwidth (one direction)
- G711u/a - Requires 64+Kbps (inbound and outbound) continuous data stream for a quality call, plus the SIP signal. A 128Kbps connection has shown to be the minimal connection needed in our testing.
- G723 - Requires 6.4+Kbps (I and O) continuous data stream and also needs room for the SIP signal, 28.8Kbps connection has shown to be the minimal connection.
(Source)
