I have Fibre extra and have noticed that BT Wholesale checker now says this when I in put my phone number on the ADSL checker. "Furthermore your exchange has been enabled for multicast services on fibre lines, please contact your provider for further details." I am on the Broadstone Exchange in Dorset. I cant find anything on the plusnet website, what are "multicast services" ? Do Plusnet provide them, do I want them, it would be useful to know.