Non-LCD station user’s guide for System Models: DXP systems with software 12A and later, DXP Plus systems with software 12A and later, FX Series with software 12A and later. Telephone Models: Impact 8124S-** Rev. A and later, Impact 8112S-** Rev. A and later, Impact 8112N-** Rev. A and later, Impact SCS 8212S-** Rev. A and later, and Impact SCS 8212N-** Rev. A and later.