OK, I'll admit I don't specialize in Comdial but I'm familiar with other systems and have done administration/programming on Comdial systems & voicemail. So here's the background of the current issue. The cabinet had been pulled and has been in storage for about 6 months. I recently hooked it back up and redid all of the extension/station wiring and don't yet have the T1 line active. All of the phones are displaying "No communication" and what appears to be a Firmware version. I've opened the cabinet but I'm not quite sure what to look for as far as status LED's and such. Also, I don't think it's normal, but the power supply sounds like it has a high frequency "hiss" sound. Can anyone help with steps to help isolate the problem?