Well, I'll just ask then I just want to know the correct "sequence of lights" to expect for the following - switch it on, presumably wait for the self-check, send an ok message, and confirm that it has been sent.

I tried doing this last time I was out, but the light sequence was confusing so I tried again. I think I then cancelled the original message... :-P My boss didn't get it anyway, and was very relieved to hear from me by text message some 16 hours later.