I know it's not needed on VDSL, but I am curious what are the data in the string

mine was this:

2.04.1919.R| firmware version, I am now on 2.12.2653.R on the same device
003| ??
ER115| model
B23456789012347|serial number - on the sky box/packaging label the serial number is B2345678901234 without the "7" at the end, maybe a control digit ...