On Wed, 8 Dec 2004, Michael Welter wrote:
I went on a service call yesterday to find an asterisk system with a T100P card on a Qwest PRI and a TDM40B card connected to fax machines. The TDM40B LEDs were not lit, and the system did not respond to keyboard input. However, calls were being processed for the PRI and 7960 phones.
I replaced the TDM40B card with a new one, and the system now seems to be ok. But I'm wondering, why would the LEDs go off? Why would keyboard input fail?
Hi,
Cant help with the TDM card, but I have seen PCs get affected by mains bumps. I used to have a PC where the keyboard controller would crash but I was still able to telnet into the PC and reset it.
Check the mains supply, there might be something with a big inductive load, that causes some ripples that are ending up on the DC outputs of your PCs PSU.
HTH
Chris
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