The 45299/15 BK199 from Alpha Wire is a black multi-pair cable with 30 conductors (15 twisted pairs) of 20 AWG and foil and braid shielding, supplied in 1000.0' (304.8 m) lengths.
The 45299/15 SL199 from Alpha Wire is a 30-conductor (15 twisted pair) multi-pair cable in slate, 20 AWG, with foil and braid shielding, supplied in a 1000.0 ft (304.8 m) length.