[Asterisk-Users] concurrent calls

WipeOut
Thu, 09 Oct 2003 09:31:38 -0000

duncan wrote:

>
> actually i meant how to find out how many i could push down the 512k
> line - with regards to codec bandwidth and signalling etc...
>
Measure the data rate on one call and divide 512k by it for a rough
estimate..

If you want more accuracy make one call and measure the data rate, then
two calls and then 3 calls and you should start to see a trend in the
increse in traffic per call..

My tests on one call showed GSM to use about 34Kbps* so you should
manage 14 concurrent calls.. As a suggestion look at using the iLBC
codec which in my test on one call used 25Kbps* which will give you
close to 20 calls in your 512K connection..

Later..

*Averaged and Rounded off