[asterisk-users] IAX2 trunking scalability

[Jean-Michel Hiver]

Hi List,

I have a 2Mbps SDSL link which gets saturated during peak time because  
about I have about 3 E1 worth of g729 traffic going thru. So I'm planning  
to use IAX2 trunking to reduce bandwith requirement and squeeze out each  
and every bit of this (expensive) bandwith.

I've set up two boxes (debian etch), one in a remote data center (which  
has plenty of bandwith) and one behing the SDSL link. To make things  
consistent I've installed the same kernel, latest stable zapata + asterisk  
on both ends.

I've done some tests with about 1/2 E1 (15 channels) worth of calls and so  
far it's been working good - and the call statistics (ASR, ACD, PDD) are  
roughtly the same. So far, so good!

Now the big question is: how far can I expect it to scale? Has anybody  
successfully mounted IAX2 trunking with 3-4 E1s worth of traffic?

Your experience and feedback is appreciated.

Cheers,
Jean-Michel.