How to diagnose dropped calls

So I purchased an FVC-100 in November to " upgrade" my phone system. We have 1 line (out of 8 analog) that has NEVER worked. For some reason between going from Build 0005 and Build 0007, two or three times a day, we loose all external lines and have to reboot the PBX. I have one line that has constant echo on it and a conference phone that has such severe chop when used that we had to stop using it. So you think ok, Hardware problem... well this is on our " new unit" that we got last month after our old unit had two dead analog ports. I' ve tested all of our analog lines, they are fine. I highly doubt it' s a telco problem.

Jeremy, Your problems might be a NETWORK issue. Have you tested your network lines, switch, patch cords, etc. Check the network switch configuration (if it is managed). Make sure your FortiVoice unit is on a 100 mbps port on your switch. Leave the port configuration to AUTO for speed and duplex on both ends (switch and phone unit). Just some thoughts.... Charles

Talk to support and get the latest build of 7.20.008. My client had issue of drop calls and call not transferring and phones loosing configs. These issues were resolved with this firmware.