lowededwookie,
Thanks for your offer, I really appreciate that. If I don't get it going this weekend I'll PM you. I'm not sure why this is an unusual setup - but my house is spread out over 4 levels with my office at the bottom and lounge at the top where the signal from one base unit is not strong enough. I just want to be able to get full house access.
alsta,
I've followed your instructions and it works (hurrah!) to a point, but I'm not able to access the second unit - even though the green light shows. As soon as I remove the unit from power to shift it upstairs, it doesn't get back to green again, just flashing amber. The pics here and in the next post show what I've done, if that's any help.
celtickiwi,
That's a lot of working out, but I'm doing it now, thanks.
