I have developed a custom application 2 years ago to reproduce the current hour, is pretty simple. With Asterisk 1.2, zaptel, and using a clone server I have no problems, now with a IBM server X3200 and Asterisk 1.4 or 1.6 I got a rare issue.
If I have very low traffic (3 or 4 calls) the system works fine, but once the traffic is over 10 calls the channels starts to get down until the entire PRI is down. I still do not know why this is happening but the rare situation is that when I throw the command pri show spans asterisk is still reporting the link Up and Active.
I have installed lippri version 22.214.171.124, any idea about what is happening?