[Asterisk-Users] concurrent calls

[Olle E. Johansson]

WipeOut wrote:

> 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..
Some pointers to whitepapers and online bandwidth calculators:
http://www.voip-info.org/wiki-Bandwidth+consumption

/O