From a Shell to a Bell

During our two weeks of 24/7 prayer we are using the Daily Office from the Northumbria Community, which they have published in their Celtic Book of Daily Prayer.Like in the Northumbria Nether Springs Community, just before daily prayer at 9 am, noon, 5 pm or 9 pm, a bell will ring in our prayer room.But not just any bell!http://www.youtube.com/watch?v=M3Za5qUVAOY