The good news is that the internet connection is stable so far. The bad news is that the speed of the connection is a lot less than that which we had before. I've tested it using the same sites that I used with the previous connection and tried it several times at different times of the day. On the basis of that, the telephone certainly would not work.
Ah well we will have to wait and see. For the same monthly fee I could potentially have a 4Mb connection using ADSL. Sorry Mr Wi-Surf but we originally signed up for 2Mbs not something approaching 512Kbs.
Of course there is still the issue of distance from the exchange as illustrated in this graph. There is not much point switching to ADSL using the phone line if we are too far from the exchange.