ML1250 4 Line Corded/Cordless Phone System, 1 Handset, Black/SilverThe Motorola 1 4 line wireless phone system is easy to set up. Start with the Motorola base station, plug the base station into any phone jack and wirelessly connect the base station and cordless handset, only one jack is required. You can wirelessly expand up to ten Motorola ML desk phones and or cordless handsets and support up to four phone lines. Full duplex speaker phone along with six way conferencing. Features Auto Attendant Digital