Telecom sent me a V5542 when I ordered fibre a couple of months ago. I'm still waiting for fibre and in the meanwhile my existing modem kept dropping out. I dug out the new modem and plugged it in when I realised it did ADSL as well.
I've had it on for a couple of weeks and its good - it's happily connected 2 win7 laptops, 2 Kindles and iPad Mini all via wifi
Today I wanted to connect my old WinXP netbook - but it can't find the modem (it's about 1m away!). It can find all the neighbours wifi so it's not an issue with the wireless hardware. I can connect direct using ethernet no problem
So I'm wondering there is some issue with WinXP that stops it seeing a newer modem - any ideas?