Please dump BT 1571 and buy an answering machine with that facility (less than £10 on ebay) instead!
The reason I say that is because, IMHO, 'free' 1571 services are nothing more than a clever con by call provider companies to make money.
That's because, if you call someone who has the 'service' and they happen to be engaged on a call already, you go straight through to the 1571 'machine'. Your call is connected and you are charged 3p connection and a minimum of 3p for the first minute (if you're on BT or whatever your own calls provider charges). So, even if you don't want to leave a message, that call has cost you 6p. Trying again (and again, and again) might have the same result too.
If the person you called didn't have 1571, you'd have heard an engaged tone, would not have been charged anything, would have realised they were busy on a call and would have tried again after a few minutes.
An answering machine set to answer after 8 or 9 rings is a far more 'friends and family friendly' device for when you're out - F&F quickly learn (or you can even tell them), that, if you haven't answered by, say, the fifth ring, you're not going to so they'll have the option of hanging on until the answering machine kicks in and leaving a message or hanging up and trying later.
Last edited by Heinz : 29-11-2006 at 09:56