scope:

This standard refers to HD 608 S1:1992, Generic specification for symmetrical pair/quad or multicore cables for digital communications. It covers individually screened or unscreened pair(s) or quad(s) in cables for vertical shafts or vertically between floors (riser backbone cables) or in horizontal between buildings (campus backbone cables). In the same cable both screened and unscreened elements may be used. When installed vertically extra strength requirements may be applicable and are defined in the detail specifications.