by okli » Thu Sep 20, 2012 2:53 am
I tried that when installing a new Sangoma A104D card and ended up with quite inconsistent and bad results from zttest.
After a few emails back and forth with Sangoma with various attempts to better up those results by playing with dahdi/zaptel, firmware and driver versions, including beta ones (great support, response time and attitude from Sangoma by the way), I gave up deciding not to dig any longer in this direction and play safe.
Mind you, not saying you will have the same result, we needed that box in production asap, there could have been some tricks and steps which were missed and most likely there were, just sharing my experience if it helps at all. And sorry, can't be more detailed, that was a few years ago.
As far as I remember Matt was involved in this study, hopefully he will share his thoughts.