The problem with the explanation

I'm sorry I did not write the problem in fullscreen
First, I have a system worked 2.6.2trixbox commentary on the following page to http://www.voipuser.org/forum_topic_3302.html
The service is working 100% and I worked through the contact x-lait was working perfectly
, But today I had the problem no longer do anything
When I could not contact me with communication and he is tested more than the way did not work with me Is there something changes on the server or there must be steps that I
With thanks to all those who attempt to help me feras-palestine