I was wondering if anyone has experienced this issue. T-1 QSIG integration from Nortel CS 1000 to MM Dialogic cards. For some reason D Channel goes down but the Dialogic Card does not see any issues. We have to reboot the MAS completely and reset the Nortel D Channel T-1. Together the ports come back up as normal and are ooperational again. We think there is a pattern of like 19 days then it goes out. Any thoughts?