Alcatel Unleashed

I have an IP Trunk configured to send 4 digits. I connect here some h323 terminals in order to use them as terminals. For about half hour it works fine, however then it suddenly stop sending those four digits. I had to reset the PBX (OXE) and it worked again. Then it failed again. Did anyone had this kind of issue already?

Any help will be apreciated.

What release are you using ?
How do your terminal send digit to the trunk ?