NorthWalesMyko

Hi Guys, I recently bought a Visonic Powermax Express as a replacement panel for my PowerMax Pro - after 6 years it decided to give up the ghost. Anyway, GSM Network is pretty weak in my village - I'm getting it sorted BUT I can't seem to set my system with the fault? I could with my PowerMax Pro, it'll still set the system, but yet this one won't? Am I missing something? The system currently says NOT READY and looking in the trouble log, it says GSM Network Failure. No other faults. Any advise would be a great help? Regards, Michael