PSTN Line being dropped

Hi All,

Been playing with Asterisk for some time now, I only use it at home so don’t have a large config. Currently running version 1.4

Running FedoraCore2 (not very good with this loonix stuff, but this works for me). TDM400 with a single FXO port for my PSTN line. I also have an account with sipgate.co.uk for VOIP. My problem is that randomly my PSTN line just drops while talking to someone. I don’t have any problems when someone calls my on my VOIP number. There is no pattern to the problem and I can’t see anything in the log files, maybe I need to increase the logging further and any help would be well used.

Thanks in advance for you help.