Multicast services? A second 'different size' fibre cabinet?

I did post this on the BT forum but haven't had a response yet so thought I'd post here.

Basically my question is what is meant by this:
"Furthermore your exchange has been enabled for multicast services on fibre lines, please contact your provider for further details."

After noticing another fibre cabinet, a bigger one (Huawei I guess), being built next to the smaller one I thought I'd check to see if it was due to the fact the cabinet I'm on is already full (had Infinity since the 8th and am the first one in the cabinet), but it's not as it's still accepting orders. When checking I noticed the above message that I've not seen before when previously checking my line information.

I presume they're building a bigger one next to the current smaller one (confirmed as an ECI, though I was supplied with a Huawei modem?) because they want to expand capacity.

Multicast is just one-to-many communication - http://en.wikipedia.org/wiki/Multicast

The BBC were experimenting with it a while ago and some ISPs let you use it, nowadays everyone just uses iPlayer.

AFAIK, exchanges are either ECI or Huawei , so I'm suspicious that they are different vendors cabinets

I see. Perhaps it's a larger ECI cabinet then, I've never seen what a larger ECI looks like though (if one exists), but I definitely have been told that based on my discovery/medley phase tones that I'm on an ECI type cabinet, although I was given a Huawei modem.

Is it like any if the ones shown on this page?

http://www.robertos.me.uk/html/street_cabinets_etc.html

Hi,

I have seen the same in my area. I am connected to a smaller FTTC and a bigger CAB is being installed beside it. I assumed that it was being installed due to increased demands for capacity.