NEC 780031 DTR-4D-1 Dterm Series I Phone (Black/Refurbished)Key Features: NEC 780031 DTR 4D 1 Dterm Series I Telephone (Black Refurbished) DTR 4D 1 terminal offers the same functionality and operation of a standard Dterm Series I digital terminal However, no Adapters (AD(A) R, CT(A) R, AC R, etc) are supported Four Programmable Line Keys with 2 color LED Nine Dedicated Function Keys (Feature, Recall, Conf, Redial, Answer, Speaker, Transfer, Hold, Mic) Two Volume Keys Four Softkeys Help, Exit Keys Large Message