HEllo I had tested trunks sip and iax between 2 asterisk in many places its work very good, but now a had used the similar trunks between 2 box to Panama on Colombia, the problem is when there are 2 or more calls, the voice is very bad and it cuts. I think that problem is the traffic on teh international net, but with one call it works fine, and 2 calls are very little to fill a channel, any idea?? Thanks. Elastix wonderful project!!!!