So whats the best way to find the maximum number of concurrent calls in this setup: IAX2 Trunk using GSM over a 512k internet line. thanks duncan
show channels? On Thu, 9 Oct 2003, duncan wrote:> So whats the best way to find the maximum number of concurrent calls in > this setup: > > IAX2 Trunk using GSM over a 512k internet line. > > thanks > > > duncan > > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users >
On Thu, 9 Oct 2003, WipeOut 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..of course this is assuming that trunk=no (in IAX atleast) - wasim
> > So whats the best way to find the maximum number of concurrent calls in > > this setup: > > > > IAX2 Trunk using GSM over a 512k internet line.>show channels?actually i meant how to find out how many i could push down the 512k line - with regards to codec bandwidth and signalling etc... duncan
try to read this: http://lists.digium.com/pipermail/asterisk-users/2003-June/014788.html senad
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
you may point your browser to: http://www.openh323.org/docs/bandwidth.html and scroll for GSM. Then pick your fav. calculator begin to div. duncan wrote:> >> > So whats the best way to find the maximum number of concurrent >> calls in >> > this setup: >> > >> > IAX2 Trunk using GSM over a 512k internet line. > > >> show channels? > > > actually i meant how to find out how many i could push down the 512k > line - with regards to codec bandwidth and signalling etc... > > > > > duncan > > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > >
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
Is there any way to quickly poll an asterisk server for concurrent call count? Preferably from like a perl or PHP script. -Daniel
:) On Thu, 3 Feb 2005 10:41:37 -0500, Daniel Corbe <daniel.junkmail@gmail.com> wrote:> Is there any way to quickly poll an asterisk server for concurrent > call count? Preferably from like a perl or PHP script. > > -Daniel >