The voice High Density (HD) modular jacks, RJ-11 keystone jack, is 6-position 6-conductor (6P6C). It's HD design offers a smaller rear footprint, maximizing space in confined work areas, and allows the use of more modular jacks within the same space. The voice High density modular jacks is designed for business system applications. The IDC accepts 22-24 AWG solid wire and is suitable for use with Apple Talk, DSL, Voice, and Arcnet applications. Compatible with RJ11/14 and 25 modular jacks and plugs.