I have a big problem with an IP Office 500.
On two occasions I have turned up onsite for the fault of both 8DS cards suffering complete failure. This was following power outages. All other cards including the PRI cardsd sitting on top of an 8DS unit are OK. On my second visit I installed a new UPS but it has now happened again! Both 8DS cards blown again!
I am thinking something may be wrong with the Avaya chassis or the power unit?
Or maybe it is just the building's unstable electric supply to blame?
Customer trying to say it MUST be the system so we have to pay for all the visits and faulty kit.
I am about to change the whole unit and see what will happen next.
After that I have to hope the cards blow up again!
Any ideas? Is there any known history of the 8 dig cards being problematic or whether the chassis or Avaya PSU could be causing the problem?