This part of IEC 60794 is a family specification covering buffered A4 fibres and cabled A4 fibres for indoor use. See IEC 60794-2-41 and IEC 60794–2-42 for blank detail specifications.
DS/EN 60794-2-40:2008 history
2008DS/EN 60794-2-40:2008 Optical fibre cables - Part 2-40: Indoor optical fibre cables - Family specification for A4 fibre cables