I have implemented step 1. The ‘dongle’ status page in the Firebrick’s web UI now shows that the presence of the dongle has been detected, which is good. However the state shows as ‘dialling’ no matter what I do, so no luck. I suspect I have not set things up correctly at the AA end. But I have activated the SIM in the dongle, hoping it is the correct SIM, but not sure and don’t know how to tell for certain. So it means an appeal to AA staff to sort me out.