I have a problem with randomly dropped incoming calls on E1 FRA circuit. It happens roughly twice a day with no obvious reason. E1 is used only for inbound and calls can be dropped after 1,5 or 15 minutes, no regularity at all. I have 5 new installation 3 x TE121 + HWEC running HP ML110G7 and 2 x T122 + HWEC running ML110G6 - all with the same issue. I tested installs with and without hp raid driver to avoid IRQ problems. All installs are new and connected to the same TELCO with different locations.
In two cases I got kernel panic as well.
Please advise as we are running out of time. We bought Digium cards in a good faith but it actually works against us at the moment.