Well that "intensive play" I spoke about took a little longer than I had hoped, but if anyone is still out there, I still have the intermittant problem.
It worked for a week last week, all of a sudden this morning I can't access the Omni IIe. As ever I can access other devices on the network remotely.
This has to be a panel problem surely? Port forwarding is clearly set up correctly or it would never work. The only variable in the equation is that a cleaner comes into the house and whilst I can't guarantee it, and will attempt to check for sure, I am suspecting the port forwarding is being lost after she disarms and then re arms the panel once she leaves.
...or am I simply losing it?
Marc