Hello & Help. :-) On Friday night, we had a pretty good lightning storm here, and about 12:30 AM, our T1 connected to our 3COM HiperDSP stopped taking calls. The power had been out for a few minutes longer than our UPS's can handle, so some of the servers had reset and some hadn't, depending on the particular UPS. I had initially thought the settings in the DSP had been corrupted in the process so that it wouldn't answer (it was answering with dead air) but when we plugged the T1 into our old backup equipment, it only had 4 active channels out of 24 (and it wasn't connected or on at the time of the storm) so we then figured the culprit was upstream. We unplugged the 4 wires from our Pairgain HDSL T1 box to shut the power off to it and then reconnected them, and our old equipment started taking 24 calls again. Good deal - fixed... Or not. When we plugged the T1 back into the HiperDSP, the green CAR light does not come on and only the red ALARM light is lit. Calls no longer get dead air, they simply get routed past the card and are answered by the next modem pool (our BRI ISDN modem pool) so the entire T1 is ignored and bypassed, the same as if it isn't plugged into anything at all. So, I'm looking for suggestions / help. The Pairgain HDSL box doesn't seem any worse for the wear after the power reset, so I don't see how a lightning strike would hurt anything past it. The HiperDSP seems to check out otherwise & I can talk to it OK. I have two HiperDSP cards, but I've never had the second card configured, since I've never had a second T1 and I'm not certain it works at all (it has two red lights lit - ALM and LPBK/D-ALM). So... Help, please. Any suggestions or ideas to try would be great. I'm in Canada, so buying another HiperDSP set is not a cheap / quick thing to do. Perhaps there is an idea of something we can try that will better diagnose the problem? Todd Chamberlain