For real life bandwidth tests : check the ppt on www.astertest.com
Zoa.
alexandre::aldeia digital wrote:
Hi,
I like to know why iLBC and GSM generate a 40-50kbps bandwidth....
Is very high, if compared with your calculations for other codecs(G723.1 / 17kbps and G729 / 24 Kbps).
Alexandre
Kanuri, Seshu (Company IT) wrote:
/SNIP/ Some corrections are needed: 6.3kbps of G723.1 will become around 17kbps on the IP level without silence suppression because of the additional overhead imposed by protocols like RTP, IP, etc . If you add the Ethernet (or WAN protocol overhead) this will increase even more (although slightly).
Similarly, a voice stream of G729 at 8kbps will become around 24kbps on the IP level, and slightly more on the Ethernet or ppp level (around 25 kbps).
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