> So you are using an asterisk box as an E1 gateway. You want to know if > switching from not using IAX trunking to using IAX trunking will have > any effect? Yes.... it will lower your bandwidth usage a little. It > will not increase the CPU load. If your system can support x calls it > will be able to support the same amount of calls.
On about 1/2 E1, it shows that bandwith usage has been about halved - i.e. without trunking each G.729 call takes 50 kbps (inbound + oubound) and with IAX2 trunking it takes about half of that (using trunkfreq=40). Which is good! I'm wondering wether anybody already had a IAX2 trunking ON and managed to push 3 E1s worth of traffic without issues. > The best thing you can do for your system is add a TC400B card. It > will also legally support G723 codec which I think sounds just fine, > but will save you a bit more bandwidth. Using the hardware transcoder > will greatly increase the number of calls your system would be able to > handle. I'm already receiving the calls as g.729, so there is little gain (slightly less bandwith usage, slighly worse sound) in doing g.729 -> g.723 transcoding - while doing IAX2 trunking vs NOT doing it seems to half the bandwith requirement. Cheers, Jean-Michel. _______________________________________________ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
